期刊文献+
共找到351篇文章
< 1 2 18 >
每页显示 20 50 100
Reinforcing effects of modified Kevlar~ fiber on the mechanical properties of wood-flour/polypropylene composites 被引量:7
1
作者 YUAN Fei-pin OU Rong-xian +1 位作者 XIE Yan-jun WANG Qing-wen 《Journal of Forestry Research》 SCIE CAS CSCD 2013年第1期149-153,共5页
Kevlar fiber (KF) is a synthesized product with strong mechanical properties. We used KF as a reinforcement to improve the mechanical properties of wood-flour/polypropylene (WF/PP) composites. KF was pretreated w... Kevlar fiber (KF) is a synthesized product with strong mechanical properties. We used KF as a reinforcement to improve the mechanical properties of wood-flour/polypropylene (WF/PP) composites. KF was pretreated with NaOH to improve its compatibility with the thermoplastic matrix. Maleated polypropylene (MAPP) was used as a coupling agent to improve the interfacial adhesion between KF, WF, and PP. Incorporation of KF improved the mechanical properties of WF/PP composites. Treatment of KF with NaOH resulted in further improvement in mechanical strength. Addition of 3% MAPP and 2% hydrolyzed KF (HKF) led to an increment of 93.8% in unnotched impact strength, 17.7% in notched impact strength, 86.8% in flexure strength, 50.8% in flexure modulus, and 94.1% in tensile strength compared to traditional WF/PP composites. Scanning electron microscopy of the cryo-fractured section of WF/PP showed that the HKF surface was rougher than the virgin KF, and the KF was randomly distributed in the composites, which might cause a mechanical interlocking between KF and polypropylene molecules in the composites. 展开更多
关键词 wood flour/polypropylene composite Kevlar fiber HYDROLYSIS REINFORCEMENT impact strength
在线阅读 下载PDF
Preliminary study of viscoelastic properties of MAPP-modified wood flour/polypropylene composites 被引量:4
2
作者 CAO Jin-zhen WANG Yi XU Wei-yue WANG Lei 《Forestry Studies in China》 CAS 2010年第2期85-89,共5页
Viscoelastic properties of maleated polypropylene (MAPP)-modified wood flour/polypropylene composites (WPC) were investigated by both a compression stress relaxation method and dynamic mechanical analyses (DMA).... Viscoelastic properties of maleated polypropylene (MAPP)-modified wood flour/polypropylene composites (WPC) were investigated by both a compression stress relaxation method and dynamic mechanical analyses (DMA). Three wood to polymer ratios (40:60, 60:40, and 80:20) and five MAPP loading levels (0, 1, 2, 4 and 8%) were used to study their effects on the viscoelastic prop- erties of MAPP-WPC. The results show that: 1) higher wood to polymer ratio corresponds to higher stress relaxation levels for unmodified WPC. The modification with MAPP has an obvious effect on the stress relaxation of MAPP-WPC at higher wood to polymer ratios (60:40 and 80:20), but almost no effect at the 40:60 wood to polymer ratio. The optimal MAPP loading level for the wood to polymer ratio of 60:40 appears at 1%; 2) the storage modulus reaches its maximum at a MAPP loading level of 1% for wood to polymer ratios of 40:60 and 60:40, while for the 80:20 wood to polymer ratio, a higher storage modulus is observed at higher MAPP loading levels, which is quite consistent with the stress relaxation results. The results suggested that a suitable loading level of MAPP has a positive effect on the viscoelastic properties of WPC at higher wood to polymer ratios. Excessive MAPP loading would have resulted in adverse effects. 展开更多
关键词 wood flour/polypropylene composite (WPC) maleated polypropylene (MAPP) viscoelastic properties stress relaxa-tion dynamic mechanical analysis (DMA)
在线阅读 下载PDF
Properties of PEG/thermally modified wood flour/polypropylene (PP) composites 被引量:3
3
作者 LUO Shu-pin CAO Jin-zhen WANG Xing 《Forestry Studies in China》 CAS 2012年第4期307-314,共8页
In order to improve the dimensional stability of wood-polymer composites, wood flour pre-treated by polyethylene glycol (PEG) at two different concentrations and then thermally treated at 140℃, was used as raw mate... In order to improve the dimensional stability of wood-polymer composites, wood flour pre-treated by polyethylene glycol (PEG) at two different concentrations and then thermally treated at 140℃, was used as raw material to produce wood flour/poly- propylene (PP) composites at a wood content of 40%. The structure of modified wood flour was analyzed with a scanning electron microscope (SEM) and its effect on the physical and mechanical properties of wood flour/PP composites was evaluated. The SEM results indicated the "bulking" effect of PEG on wood flour, which resulted in reduced water uptake. The combination of PEG and heat treatment further improved the moisture resistance of the composites. However, PEG modification had a negative effect on the flexural modulus of rupture (MOR) and the modulus of elasticity (MOE); whereas heat treatment partly compensated for this reduc- tion. For dynamic mechanical properties, PEG treatment decreased the storage modulus (E'). However, the heat treatment resulted in an increase orE' of the wood flour/PP composites, with the temperature of loss factor peaks shifting to a higher temperature. 展开更多
关键词 wood flour polypropylene (PP) polyethylene glycol (PEG) heat treatment
在线阅读 下载PDF
Dielectric properties of Simon poplar wood flour/polypropylene composite at oven-dry state 被引量:1
4
作者 WANG Lei CAO Jin-zhen WANG Yi 《Forestry Studies in China》 CAS 2008年第4期265-269,共5页
Interfacial compatibility is a crucial factor to the performance of wood-plastic composites (WPCs). Yet, so far, the coupling mechanisms of WPC have not been completely understood. In order to further clarify the in... Interfacial compatibility is a crucial factor to the performance of wood-plastic composites (WPCs). Yet, so far, the coupling mechanisms of WPC have not been completely understood. In order to further clarify the interfacial coupling mechanism, the dielectric constant and dielectric loss factor of Simon poplar wood flour/polypropylene composites without additives at different wood contents were measured at oven-dry state, and parameters and thermodynamic quantities of the relaxation process were also analyzed and calculated. Consequently, an obvious relaxation process based on the reorientation of methanol groups in amorphous region of wood cell wall was observed exactly that its dielectric loss factor peak decreased with the decreasing wood content within the measured range of 50%-100%. With the trend of dielectric relaxation strength, the two changing trends both revealed that the existence of polypropylene could hinder reorientation of methanol groups. Following the decreasing wood contents, the effect of the hindrance on the dielectric properties turned obvious gradually. It elucidated that introduction of polypropylene caused the quantities of hydrogen bonds formed between each methanol group and the groups around it change. The same conclusion could be drawn from the analysis of thermodynamic quantities during the dielectric relaxation progress. 展开更多
关键词 Simon poplar wood flour/polypropylene composite wood content dielectric relaxation methanol group
在线阅读 下载PDF
Dynamic-mechanical analysis and SEM morphology of wood flour/polypropylene composites
5
作者 GUO Chui-gen SONG Yong-ming WANG Qing-wen SHEN Chang-sheng 《Journal of Forestry Research》 SCIE CAS CSCD 2006年第4期315-318,共4页
A study was conducted to investigate the effects of compatibilizers, including Maleic anhydride grafted polypropylene (MA-PP) and maleic anhydride grafted ethylene-propylene-diene copolymer (MA-EPDM), on wood-flou... A study was conducted to investigate the effects of compatibilizers, including Maleic anhydride grafted polypropylene (MA-PP) and maleic anhydride grafted ethylene-propylene-diene copolymer (MA-EPDM), on wood-flour/polypropylene (WF/PP) composites. WF/PP composites were prepared by direct extrusion profiles using a twin-screw/single-screw extruder system. DMA analysis showed that the loss factor of composites decreased and the storage modulus improved in the presence of MA-PP, which indicated much better interfacial adhesion between the PP matrix and wood flour filler than in the absence of compatibilizer. Morphological feature based on SEM observation showed that MA-PP and MA-EPDM improved the dispersion of the wood particles in the plastic matrix. MA-EPDM is a soft segment, although it improved the interfacial adhesion, storage modulus decreases with adding of MA-EPDM. As compatibilizer of wood-flour/polypropylene composites, both DMA analysis and SEM feature proved that MA-PP was superior to MA-EPDM. 展开更多
关键词 wood flour polypropylene compositeS Dynamic-mechanical analysis
在线阅读 下载PDF
Study on Water Resistance of Polydopamine Treatment Wood Flour/Polypropylene Composites
6
作者 Do Khoa Thi Lanh Tran Duc Thien 《Journal of Materials Science and Chemical Engineering》 2016年第5期7-15,共9页
This paper aims to investigate the water absorption of wood flour/polypropylene composites and its effects on dimensional stability and crystallization properties. Wood-plastic composites (WPCs) makes using polydopami... This paper aims to investigate the water absorption of wood flour/polypropylene composites and its effects on dimensional stability and crystallization properties. Wood-plastic composites (WPCs) makes using polydopamine modified wood flour (WF-D), virgin polypropylene, maleic anhydride-grafted polypropylene (MA) and antioxidant, by using hot-pressing moulding. Water absorption (WA), thickness swelling (TS) and failure of flexural properties of the composites have studied for a range of immersion times. It is found that the WA and TS have increased with WF content and immersion time. The water absorption and thickness swelling of WPCs are 0.85% and 0.99%, respectively, after 8 days immersion. With the prolonging of immersion time, the impact strength, flexural strength and flexural modulus of WPCs increase first and then decrease. The impact strength decreases from 3.32 kJ/m<sup>2</sup> to 2.94 kJ/m<sup>2</sup>, the retention rate is 88.55%;the flexural strength and flexural modulus by 68.58 Mpa and 3.92 Gpa, respectively. WPCs crystallization and thermal properties decrease slightly. Microstructures of the composites are examined to understand the mechanisms for the wood-plastic interaction which affects the water absorption and thickness swelling. Our work demonstrates that using polydopamine treatment wood flour for preparing WPCs can be an efficient way to improve the water resistance of WPCs. 展开更多
关键词 wood flour Water Absorption polypropylene wood-Plastic composites POLYDOPAMINE Thickness Swelling
在线阅读 下载PDF
Effect of maleic anhydride grafted styrene-ethylene-butylene-styrene (MA-SEBS) on impact fracture behavior of polypropylene / wood fiber composites
7
作者 GUO Chui-gen WANG Qing-wen 《Journal of Forestry Research》 SCIE CAS CSCD 2007年第3期203-207,共5页
MA-SEBS as compatibilizer and impact modifier was incorporated into Polypropylene/Wood Fiber (PP/WF) to enhance interface adhesion and impact strength of the composite. The effect of MA-SEBS content on the impact fr... MA-SEBS as compatibilizer and impact modifier was incorporated into Polypropylene/Wood Fiber (PP/WF) to enhance interface adhesion and impact strength of the composite. The effect of MA-SEBS content on the impact fracture behavior of PP/WF composites was studied. The impact properties of composites with 8% MA-SEBS reached the maximum value. And further increasing of MA-SEBS content to 10% did not improve the fracture toughness, but improved the stiffness of composites by DMA analysis. This was attributed to the improved PP/WF adhesion. As the MA-SEBS content is more than 8%, the molecule interaction of PP and WF was expected to much stronger than lower MA-SEBS. Scanning electron microscopy (SEM) was performed to analyze the impact fracture surface and showed a stronger affinity for the wood surfaces. 展开更多
关键词 polypropylene wood fiber/polypropylene composites Fracture behavior Impact test
在线阅读 下载PDF
Effects of two modification methods on the mechanical properties of wood flour/recycled plastic blends composites: addition of thermoplastic elastomer SEBS-g-MAH and in-situ grafting MAH 被引量:2
8
作者 宋永明 王清文 +2 位作者 韩广平 王海刚 高华 《Journal of Forestry Research》 SCIE CAS CSCD 2010年第3期373-378,399,400,共8页
The effect of maleic anhydride grafted styrene-ethylene- buty-lene-styrene block copolymer (SEBS-g-MAH) and in-situ grafting MAH on mechanical, dynamic mechanical properties of wood flour/recycled plastic blends com... The effect of maleic anhydride grafted styrene-ethylene- buty-lene-styrene block copolymer (SEBS-g-MAH) and in-situ grafting MAH on mechanical, dynamic mechanical properties of wood flour/recycled plastic blends composites was investigated. Recycled plastic polypro-pylene (PP), high-density polyethylene (HDPE) and polystyrene (PS), were mixed with wood flour in a high speed blender and then extruded by a twin/single screw tandem extruder system to form wood flour/recycled plastic blends composites. Results show that the impact properties of the composites were improved more significantly by using SEBS-g-MAH compatibilizer than by using the mixtures of MAH and DCP via reactive blending in situ. However, contrary results were ob-served on the tensile and flexural properties of the corresponding com-posites. In General, the mechanical properties of composites made from recycled plastic blends were inferior to those made from virgin plastic blends, especially in elongation break. The morphological study verified that the interfacial adhesion or the compatibility of plastic blends with wood flour was improved by adding SEBS-g-MAH or in-situ grafting MAH. A better interfacial bonding between PP, HDPE, PS and wood flour was obtained by in-situ grafting MAH than the addition of SEBS-g-MAH. In-situ grafting MAH can be considered as a potential way of increasing the interfacial compatibility between plastic blends and wood flour. The storage modulus and damping factor of composites were also characterized through dynamic mechanical analysis (DMA). 展开更多
关键词 COMPATIBILIZER compositeS in-situ grafting recycled plastic blends wood flour
在线阅读 下载PDF
Morphology, Thermal Behavior and Dynamic Rheological Properties of Wood Polypropylene Composites
9
作者 Diène Ndiaye Vincent Verney +2 位作者 Haroutioun Askanian Sophie Commereuc Adams Tidjani 《Materials Sciences and Applications》 2013年第11期730-738,共9页
Wood polymer composites (WPCs) were made with pine and polypropylene matrix (PP). The composites were produced by melt blending in a Brabender at 180°C. Characterization of the samples, with the aid of scanning e... Wood polymer composites (WPCs) were made with pine and polypropylene matrix (PP). The composites were produced by melt blending in a Brabender at 180°C. Characterization of the samples, with the aid of scanning electron microscopy supplemented by microscope photography, showed an improved dispersion of wood in the polymeric material in presence of polypropylene grafted with maleic anhydride (MAPP) or nanoclay. The use of the MAPP instead of clay seems to have enhanced the level of crystallinity in the composites for the same levels of wood loading and also accelerates the crystallization. Melt rheological measurements of neat PP and PP-wood composites were carried out at 180°C with an ARES Rheometer scientific mechanical spectrometer in oscillatory frequency. All the composites materials exhibit viscoelastic values greater than those for neat PP. The samples containing MAPP as comptabilizer show the higher Newtonian viscosity, however, the addition of a small concentration of nanoparticles like nanoclays does not improve the resulting melt viscoelastic behavior of the composite. 展开更多
关键词 MORPHOLOGY Thermal Behavior Dynamic RHEOLOGICAL Properties wood polypropylene compositeS
在线阅读 下载PDF
Creep Behaviour of Wood Flour/Poly(vinyl chloride) Composites 被引量:4
10
作者 贾明印 王克俭 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2009年第3期440-447,共8页
The experimental creep data were focused on wood-flour (WF)/poly vinyl chloride (PVC) composites with the variations in additive concentrations of wood flour, silane coupling agent, organomodified montmorillonite ... The experimental creep data were focused on wood-flour (WF)/poly vinyl chloride (PVC) composites with the variations in additive concentrations of wood flour, silane coupling agent, organomodified montmorillonite (OMMT) and nano-cacium carbonate (nano-CaCO3). Their effects were analyzed using the Four-element Burger Model incorporating microscopic mechanisms. Total creep strain was low with increasing WF while elastic strain was high and plastic flow strain was low in modeling. Modification of WF with silane was beneficial to creep resistance, so did adding low ratio of OMMT (1.5 wt%) and nano-CaCO3 in composites. Thus, it was effective in reducing creep either by stiffening the PVC matrix using rigid nano-particles or by improving their adhesion with resin. However, superfluous quantity of any additament did not benefit the improvement owing to either earlier destruction of their agglomerates or stress-concentrated cracks in the over-incrassated interface. 展开更多
关键词 composite CREEP wood flour poly (vinyl chloride) NANO-PARTICLE
在线阅读 下载PDF
Microwave Irradiation Treatment of Wood Flour and Its Application in PVC-Wood Flour Composites 被引量:3
11
作者 胡圣飞 陈文 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2007年第1期148-152,共5页
The technique of microwave irradiation induced free radical bulk- polyaddition reactions in porous wood flour was used to modify wood flour. The behaviors of the modified wood flour under microwave irradiation, such a... The technique of microwave irradiation induced free radical bulk- polyaddition reactions in porous wood flour was used to modify wood flour. The behaviors of the modified wood flour under microwave irradiation, such as thermal stability and moisture sorption properties, were studied. A kind of semiinterpenetrating polymer network wood four (Semi-IPN-WF) can be formed through polymerization of MMA in the porous wood flour by microwave irradiation, and the thermal decomposition temperature of the semi-IPN-WF is considerably increased. PVC/Semi-IPN-WF composites were prepared by melt mixing in double rolls, which exhibit improved rheological properties, lower water sorption properties and outstanding mechanical performances. 展开更多
关键词 microwave irradiation wood flour poly(vinyl chloride) compositeS
在线阅读 下载PDF
Mechanical properties of wood flour/recycled-thermoplastic-blends composites
12
作者 SONG Yong-ming WANG Qing-wen(Key laboratory of Bio-based Material Science and Technology, Ministry of Education, Northeast Forestry University) 《北京林业大学学报》 CAS CSCD 北大核心 2006年第S2期180-180,共1页
The mechanical properties of composites prepared from wood flour and thermoplastic blends were investigated. Thermoplastic mixtures of polypropylene (PP) and high-density polyethylene (HDPE) and polystyrene (PS), virg... The mechanical properties of composites prepared from wood flour and thermoplastic blends were investigated. Thermoplastic mixtures of polypropylene (PP) and high-density polyethylene (HDPE) and polystyrene (PS), virgin or recycled, were mixed with wood flour in a high speed blender and then extruded by a specially designed twin/single screw extruder system to form wood-flour/thermoplastic-blends composites (WTBCs). Comparative studies were made to evaluate the effectiveness of the two modification methods of the thermoplastic blends, the one of the addition of maleic anhydride grafted styrene-ethylene-butylene-styrene block copolymer (SEBS-g-MAH) as compatibilizer and the other of blend grafting of maleic anhydride (MAH) using dicumyl peroxide (DCP) as initiator by reactive extrusion. The results showed that the impact properties of WTBCs using SEBS-g-MAH as compatilizer were better improved than that of the blend grafting. However, adverse results were observed on the tensile and flexural properties of the corresponding WTBCs. The mechanical properties of WTBCs prepared from recycled plastic blends were poorer to some extent than that from virgin plastic blends in general, especially in elongation break. The morphology of WTBCs breaking section was analyzed by scanning electron microscopy (SEM) and the results showed that a good interfacial adhesion between wood flour and polymer matrix was observed with both of the two modification methods. However, by blend grafting of adding DCP as initiator and MAH as monomer, a better interfacial bonding between wood and plastic matrix was obtained than that of the addition of SEBS-g-MAH. Blend grafting can be considered as a potential way of increasing the interfacial compatibility of different plastics and between plastic blends and wood. 展开更多
关键词 wood flour compositeS COMPATIBILIZER thermoplastic blends recycled plastics
在线阅读 下载PDF
Study and Characterization of Composites Materials Based on Poly(Vinyl Chloride) Loaded with Wood Flour
13
作者 Dairi Badrina Djidjelli Hocine Boukerrou Amar 《材料科学与工程(中英文A版)》 2013年第2期109-115,共7页
关键词 复合材料 木粉 氯乙烯 热分解温度 表征 加载 机械特性 PVC
在线阅读 下载PDF
Chemical characterization of smoke from the production process of wood-plastic composites
14
作者 Wang Shi-fa Zhang Ai-jun 《Forestry Studies in China》 CAS 2007年第1期57-62,共6页
The chemical composition of unpleasant smell, emitted from the production process of wood-plastic composites using Manchurian ash sawdust (Fraxinus mandschurica Rupr.) and polypropylene powder as the raw material, w... The chemical composition of unpleasant smell, emitted from the production process of wood-plastic composites using Manchurian ash sawdust (Fraxinus mandschurica Rupr.) and polypropylene powder as the raw material, was investigated. Wood sawdust and polypropylene powder were subjected to heat treatment to 290℃ during 8 min (the conditions were similar to those employed on an industrial scale). The emitted compounds were collected and analyzed by gas chromatography-mass spectrometry (GC-MS). The analytical results showed that the unpleasant smell was emitted from the pyrogenation of wood sawdust rather than from the polypropylene powder. Nine types of compounds (hydrocarbons, ethers, phenols, aldehydes, ketones, alcohols, acids and their derivatives, furan and its derivatives, and nitrogen-containing compounds) were collected in the gas phase during heating. Among those 126 components detected by GC-MS, 112 compounds were identified. 展开更多
关键词 wood-plastic composite unpleasant smell pyrogenation Manchurian ash sawdust polypropylene powder
在线阅读 下载PDF
Influence of Coupling Agent in Polyolefinic Composites from Post-Consumer Waste with Eucalyptus Grandis Flour
15
作者 Andre Luis Catto Ruth Marlene Campomanes Santana 《材料科学与工程(中英文B版)》 2013年第10期641-652,共12页
关键词 木塑复合材料 聚烯烃类 偶联剂 巨桉 高密度聚乙烯 聚合物基体 面粉 废料
在线阅读 下载PDF
Effect of Wood Variables on the Properties of Wood Fiber-Polypropylene Composites 被引量:1
16
作者 Kouichi SETOYAMA 《Chinese Forestry Science and Technology》 2002年第4期47-54,共8页
The effect of wood species (Chinese fir and Poplar), wood fiber content (10%, 25%, 40%) and wood fiber sizes (16 to 32 mesh, 32-65 mesh, above 65 mesh) on the properties of the wood fiber-Polypropylene composites were... The effect of wood species (Chinese fir and Poplar), wood fiber content (10%, 25%, 40%) and wood fiber sizes (16 to 32 mesh, 32-65 mesh, above 65 mesh) on the properties of the wood fiber-Polypropylene composites were studied in this paper. The results indicate that the effect of wood fiber content and size in composite were more important than that of chosen wood species. Compared with polypropylene without wood fiber, the flexural strength of the composites increased when adding wood fiber into polypr... 展开更多
关键词 wood fiber/polypropylene composite wood fiber content wood fiber size dynamic mechanical properties
原文传递
Effect of Wood Particle Size on the Properties of Wood/Polypropylene Composites Ⅰ:Mechanical Properties
17
作者 QIN TefuResearch Institute of Wood Industry, Chinese Academy of Forestry. Beijing 100091, China 《Chinese Forestry Science and Technology》 2002年第1期104-108,共5页
The mechanical properties of wood powder/polypropy!ene composites with different wood particle sizes and wood species have been studied. All of the wood particie sizes increased the E-modulus of the composites. Tensil... The mechanical properties of wood powder/polypropy!ene composites with different wood particle sizes and wood species have been studied. All of the wood particie sizes increased the E-modulus of the composites. Tensile tests showed that wood partide sizes had a negative effect on the elongation at break and the tensile strength of the composites has been improved when wood particle sizes were be(ow 150 μm (below 100 mesh). For the impact tests, the wood partide sizes had a negative effect, but the MDF f... 展开更多
关键词 wood/polypropylene compositeS mechanical properties wood particle size
原文传递
Dynamic Mechanical Properties of Wood Powder /Polypropylene Composites
18
作者 Yasunori HATANO 《Chinese Forestry Science and Technology》 2003年第1期56-59,共4页
The dynamic mechanical properties of wood powder/polypropylene composites with different wood content treated and untreated with the compatibilizer have been studied. It has been found that addition of wood powders an... The dynamic mechanical properties of wood powder/polypropylene composites with different wood content treated and untreated with the compatibilizer have been studied. It has been found that addition of wood powders and the compatibilizer can both improve the viscoelasticity of composites. Glass transition temperature (Tg) of appropriate wood powder-filled composites decreased. The value for the storage modulus (G') increased gradually with increasing wood powder content. The addition of the compatibiliz... 展开更多
关键词 dynamic mechanical properties wood powder/polypropylene composites COMPATIBILIZER
原文传递
油菜秸秆木塑复合材料的制备研究
19
作者 吴亦珺 张蓉蓉 +2 位作者 肖婧怡 张维农 从艳霞 《中国油料作物学报》 北大核心 2025年第2期502-512,共11页
为解决油菜秸秆处理困难的问题,以油菜秸秆为原料,采用混炼热压工艺制备木塑复合材料,系统研究了油菜秸秆的填充量、粒径和聚合物种类对木塑复合材料性能的影响,并将其与GB/T 24137-2009《木塑装饰板》中相关指标进行比较。研究结果显示... 为解决油菜秸秆处理困难的问题,以油菜秸秆为原料,采用混炼热压工艺制备木塑复合材料,系统研究了油菜秸秆的填充量、粒径和聚合物种类对木塑复合材料性能的影响,并将其与GB/T 24137-2009《木塑装饰板》中相关指标进行比较。研究结果显示,当油菜秸秆的填充量为30%、粒径为80目时,木塑复合材料性能指标较优;聚丙烯(PP)制备的复合材料性能优于乙烯-丙烯酸乙酯共聚物(EAA)、高密度聚乙烯(HDPE)和聚氯乙烯(PVC)制备的复合材料;比较了稻壳灰、亲水型纳米SiO_(2)和亲油型纳米SiO_(2)对材料性能指标的影响,结果表明添加5%的亲油型纳米SiO_(2)或5%的稻壳灰能有效增强复合材料性能,拉伸强度分别提高了2.01%和11.25%、弯曲强度分别提高了12.73%和7.32%、弹性模量分别提高了7.13%和6.43%。25%油菜秸秆粉、5%稻壳灰和70%PP制备得到的木塑复合材料性能最优:拉伸强度17.83±0.56 MPa、弯曲强度33.68±0.04 MPa、弹性模量2119.32±6.39 MPa、邵氏硬度72.30±1.09 HD、含水率0.39±0.02%、吸水厚度膨胀率0.58±0.00%,基本符合国家标准。 展开更多
关键词 油菜秸秆 木塑复合材料 聚丙烯 力学性能
在线阅读 下载PDF
聚丙烯/木粉复合材料的制备及性能
20
作者 洪浩群 刘凯丽 +3 位作者 于日志 李雪松 岑兰 张海燕 《合成树脂及塑料》 CAS 北大核心 2024年第5期11-16,共6页
分别采用聚丙烯的固相接枝共聚物和熔融接枝共聚物作为聚丙烯/木粉复合材料的界面改性剂,研究两种多单体接枝共聚物用量对复合材料界面结构、拉伸性能、弯曲性能、抗冲击性能等的影响,并根据拉伸性能数据计算复合材料的界面黏结强度。... 分别采用聚丙烯的固相接枝共聚物和熔融接枝共聚物作为聚丙烯/木粉复合材料的界面改性剂,研究两种多单体接枝共聚物用量对复合材料界面结构、拉伸性能、弯曲性能、抗冲击性能等的影响,并根据拉伸性能数据计算复合材料的界面黏结强度。结果表明:两种多单体接枝共聚物均能有效地提高复合材料的力学性能,并维持良好的热稳定性;随多单体接枝共聚物用量的增加,复合材料的力学性能提高,当多单体接枝共聚物用量为5 phr时,复合材料的界面相容性较稳定,力学性能最佳,界面黏结强度参数从2.56升至3.50以上,表明复合材料具有较强的界面黏结强度。 展开更多
关键词 聚丙烯 木粉 力学性能 界面相容性 接枝共聚物
在线阅读 下载PDF
上一页 1 2 18 下一页 到第
使用帮助 返回顶部