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海泡石纤维/不饱和聚酯复合材料研究 总被引:11,自引:0,他引:11
研究了海泡石纤维/不饱和聚酯(UP)复合材料制备中纤维松解、表面处理、纤维用量、增稠剂和炭黑的加入等因素的作用及影响。探讨了复合材料成型工艺参数,研究了海泡石纤维/UP复合材料的性能,并与短切玻璃纤维/UP复合材料进行了比较。发现海泡石纤维/UP复合材料密度稍大,常态体积电阻稍小,硬度接近,表面电阻及沸煮后的体积电阻值则较高。 相似文献
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塑料和其他聚合物食品包装材料的使用,贯穿于现代食品工业的包装、储存、运输、消费过程。在保证食品运输和保存过程中的产品质量和安全的前提下,迫切需要经济、方便且环保的包装材料。另外,食品包装材料的长效抗菌能力,受到该领域研究人员的关注。简要介绍并分析了传统塑料废弃物对人体健康和动物的危害。基于实际应用和商品化需求,系统性地阐述了近年来聚丁二酸丁二醇酯、聚己内酯、聚己二酸/对苯二甲酸丁二醇酯及聚乳酸可生物降解聚酯抗菌型复合材料等有关研究进展。未来,拟聚焦开发经济环保、具有气体选调性、抗菌等功能性可降解包装材料,抑菌剂迁移和抗菌复合材料的降解机理应予以重点关注和研究。 相似文献
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采用硅烷偶联剂、乙醇和水等分别对桦木纤维(BF)和回收纸浆纤维进行表面处理,并分别将改性纤维作为不饱和聚酯树脂(UPR)的增强材料,制备相应的BF/UPR复合材料。研究了不同改性方法对复合材料界面性能的影响。结果表明:不同纤维种类、不同纤维表面处理方法和不同纤维用量对复合材料的界面性能、力学性能等影响较大;经硅烷偶联剂处理后的BF,可有效改善BF与UPR之间的界面相容性;当w(偶联剂处理BF)=16%时,相应复合材料的拉伸强度和冲击强度比纯UPR体系分别提高了31.0%和28.5%;在制备回收纤维/UPR复合材料之前应先对回收材料进行筛选,并且应优先选择对UPR基体树脂具有明显增强作用的回收纤维。 相似文献
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秸秆纤维复合材料的发展概况 总被引:3,自引:0,他引:3
简述了秸秆材料的利用现状,浅析了秸秆材料的组成结构和性能,同时分析了秸秆复合材料的发展现状和存在的问题。并概述了目前国内外解决此问题的主要方法。 相似文献
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综述了聚合物分子结构设计、聚合物共混改性以及复合材料配方设计等生物降解聚酯降解速率调控方法,分析了生物降解聚酯降解性能调控面临的问题并展望其前景,以期为制备具有高性能、时控性和完全降解性的生物降解聚合物材料提供理论基础。 相似文献
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不饱和聚酯(UP)是一种重要的热固性树脂,用纤维增强的不饱和聚酯具有极广泛的应用。随着对不饱和聚酯应用要求的提高,纤维增强UP技术有了进一步的发展。影响纤维增强UP复合材料性能的因素很多,本题结合有关影响因素,介绍近几年来纤维增强UP复合材料的研究进展。 相似文献
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不饱和聚酯/剑麻纤维复合材料性能的研究 总被引:3,自引:0,他引:3
采用乙酰化、氰乙基化、KMnO4、甲苯二异氰酸酯(TDI)以及硅烷偶联剂等不同化学方法对剑麻纤维(SF)进行表面处理,然后将SF细化,与不饱和聚酯共混,通过模压成型制成不饱和聚酯/剑麻纤维复合材料,对复合材料的冲击强度、弯曲强度、热失重温度(Td)、电性能、吸水性能与SF处理方法的关系进行了研究,同时,考察了SF用量对复合材料各性能的影响。结果表明:SF处理方法对复合材料的电性能、热性能和吸水性影响不大;SF用量对复合材料的力学性能、吸水性影响较大,对电性能影响较小;当SF用量为10%,采用硅烷偶联剂和TDI处理SF时,复合材料强度较高、耐磨性好、综合性能较好。 相似文献
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Nora Abigail Wilson García Jorge Luis Almaral Sánchez Ramón Álvaro Vargas Ortiz Abel Hurtado Macías Nelly Flores Ramírez Ernesto Aguilar Palazuelos Joaquín Flores Valenzuela Andrés Castro Beltrán Clemente Guadalupe Alvarado Beltrán 《应用聚合物科学杂志》2021,138(44):51305
In this study, composites of unsaturated polyester resin (UPR), synthesized from recycled polyethylene terephthalate (PET), with 10 to 40% in volume of corn straw fiber (CSF), were elaborated and studied the effect of fiber content on their physical and mechanical properties. The content of cellulose (48.97%), hemicellulose (24.06%), and lignin (6.59%) were determined by chemical characterization of CSF. The characteristic bonds of the UPR were identified as a cross-linking network between the styrene monomer (ST) and the unsaturated polyester (UP) through FTIR. Two decomposition stages were observed by TGA–DTG. The results of physical and mechanical properties showed that as the fiber content increased in the UPR, the water absorption increased (0.6% to 2.56%), on the other hand, the density (1218.23 to 1150.28 kg/m3), flexural strength (50.58 to 26.98 MPa), flexural modulus (2.66 to 2.29 GPa), tensile strength (8.62 to 3.65 MPa), tensile modulus (1.18 to 0.43 GPa), and hardness (81.67 to 65.67 Shore D), they decreased. SEM analysis showed some defects in the fiber distribution in the UPR, which affected the mechanical properties of the composites. This research contributes to the development of new material from use of two waste materials for the benefit of the environment. 相似文献
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<正>2复合由于2种组分不同的收缩性,复合纤维具有自卷曲性能,而PET/PTT的热收缩差异,正是制备卷曲纤维所需要的,从而使它有着良好的应用价值。由于弹性纤维氨纶使用时需包覆其他纤维,而且不 相似文献
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Chin‐San Wu 《应用聚合物科学杂志》2010,115(2):948-956
The mechanical, thermal, and morphological properties of polycaprolactone (PCL) and green coconut fiber (GCF) composites were evaluated. Blends containing acrylic acid‐grafted PCL (PCL‐g‐AA/GCF) exhibited noticeably better mechanical properties due to better compatibility between the two components. The dispersion of GCF in the PCL‐g‐AA matrix was significantly more homogeneous due to the creation of branched and cross‐linked macromolecules via reactions between carboxyl groups in PCL‐g‐AA and hydroxyl groups in GCF. The tensile strength of the PCL‐g‐AA/GCF composites at break was considerably greater than that of PCL/GCF composites. In addition, the PCL‐g‐AA/GCF blend was more easily processed due to lower melt viscosity. Biodegradation tests were performed with each composite in an Acinetobacter baumannii BCRC 15556 environment. The mass of both composites was reduced by the GCF content within 4 weeks. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2010 相似文献
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Keke Du Cheng Yong Mingjie Guan Xiangjun Xu Hongying Huang Enhui Sun Ping Qu Yueding Xu 《乙烯基与添加剂工艺杂志》2021,27(4):909-919
The recycling and utilization of feather waste from animal husbandry and straw from agriculture is a worldwide problem. In this study, keratin was extracted from waste feathers and used to modify urea-formaldehyde (UF) adhesive to obtain biodegradable adhesive for making straw flowerpots with high performance. The results showed that keratin could reduce free formaldehyde and improve the thermal stability of UF. Furthermore, the mechanical properties of the flowerpot with keratin were greatly improved. The observed performance enhancements were attributed to the excellent adhesiveness of the bonding interface. In addition, the addition of keratin makes the flowerpot more hydrophilic and provides a better source of nutrients for microbes to grow and reproduce on the surface of the flowerpot, which is more conducive to the biodegradation of flowerpots after they are discarded. Our experiment suggests the great potential in terms of profitability and environmental protection by flowerpots prepared by fermented straw fiber and keratin-modified UF. 相似文献
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