阻燃抗静电聚乙烯塑料的研究.pdf

塑料工业
第39卷SI
116
CHINA PLASTICS NDUSTRY
2011年4月
阻燃抗静电聚乙烯塑料的研究
刘罡
(1.煤炭科学研究总院重庆研究院,重庆40007:2.重庆科聚孚工程塑料有限责任公司,重庆401332)
摘要:采用共混改性技术,将十溴联苯醚、氧化锑、导电炭黑、納米碳酸钙等按不同比例加入到聚乙烯树脂中
获得了完全满足煤矿井下用瓦斯抽放管要求的阻燃抗静电PE塑料。考察了上述添加物及其添加量对聚乙烯阻燃、抗
静电和机械性能的影响。结果表明,PE的阻燃抗静电性受分散体系、阻燃剂、抗静电剂等助剂的添加量及配比影响,
纳米碳酸钙的加入对PE的导电性能有改善,对阻燃性能无明显影响;十溴与氧化锑的质量比以4/为好,炭黑及
EVA的加入提高了PE塑料的阻燃性;添加纳米碳酸钙在保持良好的冲击韧性的同时,能明显提高体系的拉伸强度
并且对抗静电性能有促进作用。
关键词:抗静电;聚乙烯;炭黑;纳米碳酸钙;表面电阻;阻燃
中图分类号:TQ325.112
文献标识码:A
文章编号:1005-5770(2011)S1-0116-04
Study on Flame Retardant and Antistatic Properties of Polyethylene Plastic
LIU G
(1. Chongging Branch of China Coal Research Institute, Chong ing 400037, China
2. Chongqing Copolyforce Engineering Plastics Co, Itd. Chongqing 400037, hin a)
Abstract: Modified by blending technology, PE, plastic with flame retardaney and antistatic property was
obtained which fully meet the requirements of coal mine gas drainage pipes. It was obtained by blending deca
bromodiphenyl ether, antimony oxide, conductive carbon black, nano calcium carbonate of different propor-
tions with polyethylene resin. The effect of the adding content on flame retardancy, antistatic and mechanical
property of PE was studied. The results showed that the flame retardancy and antistatic property were affecte
by the ratio of dispersion system, flame retardants, antistatic agents and other additives. The addition of
nano calcium carbonate improved conductivity of PE and had no significant effect on the flame retardancy
The best quality ratio of decabromodiphenyl ether and antimony oxide was 4: 1. The addition of carbon black
and EVA can improve the flame retardancy of PE plastic. Adding nano calcium carbonate can maintain good
impact toughness, significantly improve the tensile strength, and promote antistatic property of blend
Keywords Antistatie: Polyethylene Carbon Black; Surface Resistance; Nano Calcium Carbonate
Flarne Retardant
聚乙烯(PE)具有良好的化学稳定性、耐穿刺的阻燃改性一般有向塑料中添加阻燃剂、「向塑料中共
性和冲击性能,特別是耐低温性能好,脆化温度一般混入具有高阻燃性的树脂以及在塑料制品表面层化阻
可达-50℃以下。PE的加工性能很好,加工温度范燃材料等儿种方法2。另一方面,为了改进塑料
围宽。但PE塑料也有拉伸强度较低、抗蠕变性不的抗静电性,通常采用添加抗静电剂的办法即可达到
好、耐环境应力开裂性不好、耐热性不高及易燃等缺要求,但若要赋予其导电性,则需要加入炭黑类材料
点,故将PE塑料应用于矿井时,尚需对其进行必要或金属类材料等导电物质。本研究采用抗静电剂与炭
的改性处理,使其在保持优良物理机械性能的同时,黑共同添加的方法米改进PE的抗静电性,同时添加
还应具有阻燃和抗静电性能。聚乙烯塑料氧指数只有阻燃剂来改进其阻燃性能。
17左右,表明聚乙烯极易燃烧。要获得符合要求1实验部分
的阻燃塑料,就需要对塑料进行阻燃畋性处理。塑料1.1主要原料
作者简介:刘罡,男,1970年生,高级工程师,主要从事改性工程塑料及聚乙烯瓦斯抽放管的研究。
liugan95888@sina.com