chloride),是氯乙烯单体(vinyl chloride monomer, 简称VCM)在过氧化物、偶氮化合物等引发剂;或在光、热作用下按自由基聚合反应机理聚合而成的聚合物。氯乙烯均聚物和氯乙烯共聚物统称之为氯乙烯树脂。 PVC为无定形结构的白色粉末,支化度较小,相对密度1.4左右,玻璃化温度77~90℃,170℃左右开始分解 ,对光和热的...
氯乙烯單體（VinylChlorideMonomer）聚氯乙烯（PolyvinylChloride）急性作用•呼吸道刺激•倦怠、頭痛慢性作用•肢端骨溶解、雷氏症候、皮膚變厚•肝脾腫大•肝血管肉瘤 Dibromochloropropane（DBCP）•精蟲減少，無精蟲 職業病致病因 生物性：細菌、黴菌、病毒等。物理性：高溫、噪音、紫外線、游離輻射、其他電磁波...
Polyvinyl chloride is produced by polymerization of the monomer vinyl chloride (VCM), as shown. Microstructure The polymers are linear and are strong. The monomers are mainly arranged head-to-tail, meaning that there are chlorides on alternating carbon centres. PVC has mainly an atactic stereochemi...
it can be written as the repeating units of the monomer CH₂=CH-Cl. The polyvinyl chloride structure is very similar to that of the polythene except that the
Is polyvinyl chloride the same as vinyl chloride?No it AIN’T …. Vinyl chloride, H2C=CHCl" style="position: relative;" tabindex="0" id="MathJax-Element-1-Frame" class="MathJax">H2C=CHClH2C=CHCl , is the so-called monomer, a room temperature gas … .. How is Chlorinated Polyv...
the autoclave were vinyl chloride monomer emulsion was prepared having a core-shell structure polyacrylate / polyvinyl chloride composite particle modifier, this modifier is directly due to the polyvinyl chloride shell, greatly improved the modifier when blended with PVC resin matrix of Compatibility betw...
Vinyl chloride monomer(VCM) is produced from the chlorination of ethylene and pyrolysis of the resulting ethylene dichloride (EDC) in a cracking unit. PVC (glass transition temperature: 70-80°C) is produced by polymerization of vinyl chloride monomer (VCM). ...
Vinyl chloride monomer which is a precursor of the PVC (polyvinyl chloride) polymer is a carcinogenic substance. The fresh polymer preparation contains the traces of the monomer (Bidoki and Wittlinger, 2010). Repeated exposure to PVC dust can cause skin irritation. The coating of PVC on ...
Preparation of Polyvinyl chloride: This chemical can be prepared by polymerization of the vinyl chloride monomer (VCM). The reaction is exothermic, and thus requires a cooling mechanism to maintain the reactor contents at the appropriate temperature. ...
Figure 35.1 shows the Lewis structure of vinylchloride.Curiously, the single chlorine atom in the monomer accounts for nearly 57% of themass of the monomer, and thus of the mass of the polymer. The basic math is asfollows:1 Cl = 35.453 amu2 C = 24.022 amu3 H = 3.023 amuTotal = ...