聚氯乙烯

Fire-resistant,flame-retardant or ordinary PVC insulated and PVC sheathed,steel tape armored control cable.

KVV22 ZX-KVV22 ZXN-KVV22 NH-KVV22 耐火、阻燃及普通型聚氯乙烯绝缘聚氯乙烯护套钢带铠装控制电缆。

The changes of postharvest physiology, storage quality and oxidative changes of fatty acid of unshelled pine nut (Pinus koraiensis Sieb.et Zucc.) 'Korea pine'and shelled pine nut which were cased in 30 μm purple polyvinyl chloride bag and 30 μm white polyvinyl chloride bag, general 40 μm polyethylene bag, respectively for 180 days at ambient temperature(20-30℃).

以朝鲜红松带壳松籽和去壳松仁为试材，将其分别放在30 μm紫色聚氯乙烯袋、30 μm白色聚氯乙烯袋和40 μm白色聚乙烯袋中进行自发气调贮藏，研究了常温下（20～30℃）贮藏180 d期间松籽种仁的生理、品质和脂肪酸氧化变化。

Moreover the vitrification temperature T of the composite of wheat straw-PVC is a difficult to ascertain.

聚氯乙烯树脂的T接近70℃，而在麦秸与聚氯乙烯树脂复合后的T很难确定。

Moreover the vitrification temperature Tg of the composite of wheat straw-PVC is a difficult to ascertain.

聚氯乙烯树脂的Tg接近70℃，而在麦秸与聚氯乙烯树脂复合后的Tg很难确定。

The antifoaming mechanism and type of antifoaming agent s are introduced.

介绍了消泡剂消泡的机理和类型，分析了悬浮法聚氯乙烯生产中如何选择适宜的消泡剂，以及使用消泡剂后对悬浮法聚氯乙烯树脂质量的影响。

Methods of suitable antifoaming agents for suspension polymerization of PVC are analyzed as well as the influence of antifoaming agents on the properties of polyvinyl chloride resins produced by suspension process .

介绍了消泡剂消泡的机理和类型，分析了悬浮法聚氯乙烯生产中如何选择适宜的消泡剂，以及使用消泡剂后对悬浮法聚氯乙烯树脂质量的影响。

Results There were about 15 kinds of chemical poisons including vinyl chloride,polyvinyl alcohol,isoparaffin,polyvinylacetate,sodium hydrate,ammonia,acid hydroc,methanol,diesel oil,carbon monoxide,carbon dioxide,sulfur dioxide,nitrogen oxides,ozo...

结果在聚氯乙烯的生产过程中，作业场所存在化学毒物较多，主要包括氯乙烯、聚氯乙烯、聚乙烯醇、过氧化物、异链烷烃类、聚乙烯乙酸酯、氢氧化钠、氨、盐酸、甲醇、柴油、一氧化碳、二氧化碳、二氧化硫、氮氧化物、臭氧、二氧化锰等。

A series of sulphonated SBS were achieved by reacting SBS blockcopolymer with sulphuric acid, meanwhile, the blends of PVC andsulphonated SBS were studied. By means of strength capabilityexamination and DSC analysis, it was found the miscibility wasincreased after SBS was sulphonated.2 The chemical grafting of styrene and PVC membrane2.1 The reaction condition of graftingBy means of the swelling and seepage of Styrene to PVC film,St was grafted onto PVC film by the initiation of BPO .

采用硫酸对热塑性弹性体SBS进行磺化，得到不同磺化度的产物，并对其与PVC的物理共混进行了研究；通过力学性能及DSC测试，发现SBS磺化后增加了与PVC的相容性(来源：Af2a2a2BC论文网www.abclunwen.com)。2 苯乙烯与聚氯乙烯膜的化学接枝2.1 苯乙烯与聚氯乙烯膜接枝条件利用苯乙烯对PVC的溶胀渗透，在过氧化苯甲酚的引发下发生接枝共聚反应。

The main reasons for currently domestic PVC plasticizing difficulty were analyzed, and the mechanism to improve plasticizing characteristic were also introduced.

分析了目前国产聚氯乙烯树脂塑化性能差的主要原因，介绍了其塑化性能改善的机理，论述了聚氯乙烯树脂塑化性能改善进展现状及发展方向。

And PVC / wood flour composite material is added to 30-50% of the wood fiber filler and various processing aids in the PVC plastic materials such as stabilizing agent, modifiers, lubricants, coupling agent, and so on, using extrusion, injection molding or the method of wood-plastic-sheet.

而聚氯乙烯/木粉复合材料是在聚氯乙烯塑料原料中添加30-50%的木质纤维填料和各种加工助剂如稳定剂、改性剂、润滑剂、偶联剂等，利用挤出、注塑或模压成型的方法制备成木塑板材。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。