共查询到19条相似文献,搜索用时 93 毫秒
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NBR/PVC共混发泡配方设计及制品性能 总被引:7,自引:0,他引:7
研究了NBR/PVC共混发泡的配方组成,确定了橡塑比,硫化体系,发泡剂,填料,增塑剂的最佳用量,分析了各配方组分对模压发泡制品性能的影响,并初步探讨了模压发泡制品的动态力学性能。 相似文献
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NBR改性PVC性能的研究 总被引:2,自引:0,他引:2
主要研究了丁腈橡胶改性软质聚氯乙烯的性能,探讨了不同含量的NBR和交联剂对共混物的力学性能,弹性性能,流动性能的影响,制得了既具有高弹性,又具有好的流动性的热塑性橡胶。 相似文献
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在PVC糊状树脂中,添加10~502份丙烯酸树脂,4~45份粘度为15~30Pa.s的液状腈橡胶为主成分,使PVC糊料成型靴外底的耐寒性显著提高,防滑优异,即使在-20℃的低温下也可保持适宜的柔软性。 相似文献
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通过PVC糊树脂种类对旋转模塑用PVC增塑类性能的影响进行较为深入的研究,从而为旋转模塑用PVC增塑糊中糊树脂种类的确定提供了有益的参考。 相似文献
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液体丁腈橡胶改性聚氯乙烯泡沫塑料的研制 总被引:5,自引:0,他引:5
研究采用液体丁腈橡胶(LNBR)改性聚氯乙烯制造PVC泡沫塑料的过程,并考察了LNBR、增塑剂、填料、发泡剂用量和发泡时间等因素对PVC泡沫性能的影响。 相似文献
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俞丽珍 《现代塑料加工应用》2006,18(5):31-34
考察了填充剂、热稳定剂及碳黑对PVC糊流变性能、存放性能及其力学性能的影响。结果表明,加入纳米TiO_2,PVC糊的粘度在剪切速率变化时,粘度变化很大,存放10d后粘度下降很少,仅下降0.3 Pa·s。玻璃微珠和滑石粉对PVC糊的硬度影响较为明显;添加硬脂酸钡,PVC糊存放10d后粘度仅下降0.4 Pa·s,存放性能较好;碳黑用量为0.5g时,PVC糊流动性能基本不变。 相似文献
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M. N. Radhakrishnan Nair P. K. Biju George V. Thomas M. R. Gopinathan Nair 《应用聚合物科学杂志》2009,111(1):48-56
Liquid natural rubber of different molecular masses L‐LNR, and H‐LNR were subjected to varying degree of epoxidation (L‐ELNR‐10, L‐ELNR‐20, L‐ELNR‐30, L‐ELNR‐40, L‐ELNR‐50, H‐LNR‐20, and H‐LNR‐50) and the products were incorporated into PVC at various compositions by the solution blending method. These blend systems were subjected to tensile testing, tensile impact measurements, and SEM studies. It was observed that blends with L‐ELNR‐20 showed highest impact strength modification, followed by L‐ELNR‐10 and L‐ELNR‐30. High impact properties showed by these blends are attributed to the optimum level of compatibility existing between the blend components. Tensile impact fracture studies revealed that the failure pattern for this blend system is intermediate between the brittle fracture of rigid PVC and ductile fracture of PVC/L‐ELNR‐50 samples. Blends up to 30 mol % of epoxidation showed partially compatible heterogeneous nature exhibiting domain morphology. Blends of liquid rubber with higher degree of epoxidation showed deterioration in tensile strength, modulus, yield strength, and tensile impact strength due to plasticization of PVC caused by the higher polar interaction between PVC chains and the oxirane rings. Effect of ELNR molecular weight was studied and it is found that the impact modification is higher for the L‐ELNR blends compared to the H‐ELNR blends. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2009 相似文献
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采用模压法制备了竹粉/聚氯乙烯(PVC)发泡复合材料,研究了邻苯二甲酸二辛酯(DOP)、发泡剂偶氮二甲酰胺(AC)、竹粉、成核剂及成型压力对复合材料密度和力学性能的影响。结果表明:添加DOP使复合材料密度和拉伸强度下降,断裂伸长率快速增大;AC发泡剂用量增加,复合材料密度减小;竹粉用量增加,复合材料密度增加,力学性能变差;纳米二氧化钛和轻质碳酸钙的添加能有效改善复合材料的性能,其最佳用量为2份;复合材料最佳成型压力为6 MPa。 相似文献