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研究了自制聚丙烯接枝马来酸酐与乙烯/辛烯共聚物(PP-g-POE-MAH)和螺杆组合对玻璃纤维(GF)增强聚丙烯(PP)性能及产品外观的影响,制备了高性能、成型外观优的玻纤增强PP材料。结果表明,加入PP-gPOE-MAH可显著提高玻纤增强PP的拉伸、弯曲、冲击性能;在30%GF的玻纤增强PP体系中,PP-g-POE-MAH添加的最佳比例为8%,此配比制备的玻纤增强PP综合性能优良且性价比高;螺杆组合的剪切强弱较大幅度地影响材料的性能及成型外观,适当剪切强度生产的玻纤增强PP材料可兼具优良力学性能与优质成型外观。目前该材料已广泛应用于汽车、家电行业。 相似文献
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以汽车风道支架常用的20%(质量分数,下同)滑石粉填充聚丙烯(PP)材料、20%短玻纤增强PP材料、5%长玻纤增强PP材料和20%长玻纤增强PP材料为研究对象,通过扫描电子显微镜对材料中滑石粉和玻纤的取向性进行了观察,并对其注塑样板中流动方向和垂直流动方向的弯曲模量进行测试。结果表明:滑石粉、玻纤在PP基体中均具有明显的取向性,且玻纤长度越短取向性越强。玻纤增强PP材料流动方向的弯曲模量保留率明显高于滑石粉填充PP材料,且玻纤长度越长、含量越高,其弯曲模量保留率越高;玻纤长度越短,材料垂直流动方向的弯曲模量越低。滑石粉填充PP材料流动与垂直流动方向的弯曲模量差异性较小,玻纤增强PP材料长径比越大、含量越少,材料流动与垂直流动方向的弯曲模量差异越小。 相似文献
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《现代塑料加工应用》2017,(3)
研究了聚丙烯接枝马来酸酐(PP-g-MAH)用量、基体树脂流动性、玻纤形态和短玻纤的单丝直径对玻纤增强聚丙烯(PP)复合材料性能的影响。结果表明:随着PP-g-MAH用量的增加,复合材料的力学性能呈现先增加后减小的趋势,断面呈韧性断裂。基体树脂PP的熔体流动速率越大,复合材料的力学性能越好。短玻纤比长玻纤直接纱增强效果好,玻纤的单丝直径越细,复合材料的力学性能越好。当PP/PP-g-MAH/其他助剂质量比为67/2/1时,质量分数30%玻纤增强PP复合材料的性能较好。 相似文献
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长玻纤增强PP母料降低制品成本据“British Plastics&Rubber”,2005,(May):26报道,法国Arkema公司开发出长玻纤增强PP(聚丙烯)母料新产品Pryltex,玻纤含量可高达50%~60%,是市场上玻纤含量最高的母料之一。加工厂用PP稀释Pryltex后再加工,可得到由不同玻纤含量增强PP含量增强PP成型的多种最终制品,玻纤含量最高为30%~40%,也能调低至10%。Arkema公司指出,用PP稀释Pryltex比用长玻纤与PP直接配混法经济,稀释母料的方法使加工厂工作简化,不必解决玻纤的浸渍和表面涂覆助剂的问题,因而降低加工厂设备投资和原料成本,并确保最终制品性能… 相似文献
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《现代塑料加工应用》2019,(5)
通过对比力学性能、拉伸性能及冲击样条断面形貌的变化,研究了螺杆组合改变对玻璃纤维(简称玻纤)增强聚丙烯(PP)性能的影响。结果表明:玻纤引入口至真空排气口之间的螺杆元件组合对玻纤增强PP性能的影响十分明显。由正输送元件、捏合元件、反输送元件组合改造成剪切捏合螺杆组合,提高了玻纤增强PP的拉伸强度、弯曲强度、弯曲模量和缺口冲击强度。 相似文献
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唐伟家 《合成材料老化与应用》2006,35(1):52
据“British Plastics & Rubber”,2005,(May):26报道,法国Arkema公司开发出长玻纤增强PP(聚丙烯)母料新产品Pryhex,玻纤含量可高达50%~60%,是市场上玻纤含量最高的母料之一。加工厂用PP稀释Pryltex后再加工,可得到由不同玻纤含量增强PP含量增强PP成型的多种最终制品,玻纤含量最高为30%~40%,也能调低至10%。 相似文献
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玻纤增强PP热塑性片材的制备及力学性能研究 总被引:1,自引:0,他引:1
采用熔融浸渍法制备了玻璃纤维毡增强聚丙烯(PP)热塑性复合片材;通过在PP中加入复合改性PP改善了基体与增强纤维间的相容性;考察了相容剂、PP种类及玻纤毡种类对复合片材的影响。结果表明,相容剂的加入可使复合片材的拉伸强度提高29%、拉伸模量提高23%、弯曲强度提高42%、弯曲模量提高25%;高熔体质量流动速率PP可使片材的弯曲与冲击性能进一步改善。连续玻纤毡和长玻纤毡增强PP复合片材,前者综合力学性能良好,而后者则冲击强度较弱、弯曲性能加强。 相似文献
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阐述热固性增强塑料的玻璃纤维、合成纤维、酚醛树脂、呋喃树脂、环氧树脂、不饱和聚酯树脂的性能;由其为原料制成的玻璃钢产品在磷酸工业中的应用。对在不同工况下使用的玻璃钢产品,其纤维和树脂胶的选用提出了看法。在磷酸工业中使用玻璃钢产品,只要选材得当,可满足生产要求。 相似文献
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玻璃纤维与聚丙烯界面性能的研究 总被引:2,自引:0,他引:2
利用小跨度变曲的方法研究了玻璃纤维增强PP复合材料的层间剪切强度(ILSS)。进行了偶联剂的评选,考察了偶联剂和接核物PP-g-MAH用量对层间剪切强度的影响。试验表明,玻璃纤维经偶联剂处理后,提高了与PP的层间剪切强度,PP-g-MAH在玻璃纤维与PP之间起到了较好的增容作用,研究了接技物PP—g—MAH的增容效果。 相似文献
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玻纤增强阻燃PET的研制 总被引:5,自引:2,他引:3
研制了一种玻纤增强阻燃聚对苯二甲酸乙二酯(PET),着重考察了滑石粉、苯甲酸钠、Na2CO3、硬脂酸镁、ZnO及自制的几种结晶成核剂对材料力学性能和熔体流动速率的影响。结果表明,在没有加入结晶成核剂的情况下,单独加入玻纤对PET的增强增韧效果并不明显;适当的结晶成核剂能明显提高玻纤增强PET的力学性能,并改善其熔体流动性,促进PET制品定型,缩短生产周期;添加12份十溴二苯醚/Sb2O3复合阻燃剂,可使玻纤增强PET的阻燃性能达到UL94 V-0级。 相似文献
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Pultrusion is a continuous production technology for manufacturing fibre-reinforced plastic profiles. Usually glass or carbon fibres are used which are impregnated with liquid petrochemical thermosetting polymers, e. g. unsaturated polyesters or epoxy resins, and cured while being pulled through a heated die. The cured profile is then cut into parts as required. This cost-effective production method from reinforced plastics technology is now used for profiles from natural fibres. Choosing adequate natural reinforcing fibres, the properties of these composites can be even better than those of glass fibre reinforced plastics (GFRP). This potential for light-weight structures should be especially used for applications in the automotive and furniture industries. Profiles made of natural fibres and biopolymers show decisive advantages in terms of recycling compared with GFRP. Incineration of these materials is carbon dioxide-neutral. Using a biodegradable matrix, composting is another interesting recycling option. In order to manufacture natural fibre profiles with similar properties like GFRP, processing, fibre preforms, e. g. slivers, preyarns, yarns and biopolymers have to be adapted to each other. To limit investments in new machinery, the manufacture of natural fibre profiles should be possible in the same production plants as for GFRP profiles. Research still has to be done to reduce the moisture sensitivity of these composites and increase the fibre-matrix-adhesion. At present, natural-fibre-composites are well apt for panelling elements and loaded structures for interior applications, in future also for exterior structural parts. 相似文献
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Dynamic, mechanical, and thermal properties were determined for unidirectional glass fibre reinforced resins. By an out axis study, it is possible to show the particular influence of a silane coupling agent on the mechanical and physical properties of composites. This agent increases the modulus of elasticity, the relaxation times, and the apparent activation energy in the rubbery state. 相似文献
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从材料的选择、衬贴工艺、质量检查、防腐性能等方面详细介绍了用197#树脂制作MDC-29型电解槽钢衬玻璃钢槽盖的过程.其完全能够代替MDC-29型电解槽全玻璃钢槽盖. 相似文献
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新型玻璃纤维及其GRMC制品的研究沈定坤,奚松林,陈幼新,李汉良,王开泰(中国科学院上海硅酸盐研究所200050)StudyonNewGlassFibreandItsGRMCProducts¥ShenDingkun;XiSonglin;ChenYou... 相似文献
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《塑料、橡胶和复合材料》2013,42(10):509-519
AbstractThermoplastic filament winding with in line melt impregnation has been investigated for the manufacture of continuous glass fibre reinforced thermoplastic pipes. With polyethylene matrixes it was found that the high melt viscosity hindered full melt impregnation and resulted in high pull forces in the case of pipe grade polyethylene. Using a lower viscosity polyethylene it was possible to operate the melt impregnation process, but the product obtained exhibited a high void content. Surprisingly, it was found that filament winding resulted in a considerable decrease in void content, to an acceptable level. It was found possible to wind good quality pipes and achieve high failure pressures that fully reflected the strength of the reinforcement.The non-linear strain response of glass–polyethylene pipes can be modelled using laminate theory modified to take account of the non-linearity of the matrix and the change in fibre angle that occurs as the pipe deforms. 相似文献