抗静电聚甲醛的制备及性能
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摘要
以聚乙二醇/季铵盐基甲基丙烯酸酯共聚物(DC3)为复合抗静电剂,乙烯–丙烯酸甲酯–乙酸乙烯酯无规三元共聚物(AX8)为增容剂,通过熔融挤出制备永久型抗静电改性聚甲醛(POM)材料。分别研究了DC3和AX8含量对POM表面电阻率和体积电阻率及力学性能的影响。结果表明,当DC3质量分数为1%,AX8质量分数为5%时,POM的表面电阻率降到2.7×10~9Ω,体积电阻率降到4.2×10~(10)Ω·cm,拉伸和弯曲强度略有下降,断裂伸长率略有提高,冲击强度则比纯POM提高了25.35%,且水洗30 d后,抗静电性能和力学性能均未发生明显的变化,达到了POM抗静电标准要求。
The permanent antistatic polyoxymethylene(POM) was prepared by melt-blending method with polyethylene glycol/quaternary ammonium salt base methyl acrylate copolymer(DC3) as composite antistatic and ethylene-propene-ethylene vinyl acetate random copolymers(AX8) as compatilizer. The effects of DC3 and AX8 contents on the antistatic and mechanical properties of POM were studied respectively. The results show that when the mass fraction of DC3 and AX8 is 1% and 5% respectively,the surface resistivity of POM is reduced to 2.7×10~9 Ω,the volume resistivity is reduced to 4.2×10~(10) Ω · cm,the tensile and bending strength decrease slightly and elongation at break increases slightly,the impact strength is improved by 25.35% compared with that of pure POM. After washing 30 days,the antistatic and mechanical properties don′t change obviously. The prepared permanent antistatic POM material achieves the requirement of POM antistatic standard.
The permanent antistatic polyoxymethylene(POM) was prepared by melt-blending method with polyethylene glycol/quaternary ammonium salt base methyl acrylate copolymer(DC3) as composite antistatic and ethylene-propene-ethylene vinyl acetate random copolymers(AX8) as compatilizer. The effects of DC3 and AX8 contents on the antistatic and mechanical properties of POM were studied respectively. The results show that when the mass fraction of DC3 and AX8 is 1% and 5% respectively,the surface resistivity of POM is reduced to 2.7×10~9 Ω,the volume resistivity is reduced to 4.2×10~(10) Ω · cm,the tensile and bending strength decrease slightly and elongation at break increases slightly,the impact strength is improved by 25.35% compared with that of pure POM. After washing 30 days,the antistatic and mechanical properties don′t change obviously. The prepared permanent antistatic POM material achieves the requirement of POM antistatic standard.
引文
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[3]杨挺,马要耀.2012年聚甲醛市场分析[J].工程塑料应用,2013,41(6):126–129.Yang Ting,Ma Yaoyao.Market analysis of POM in 2012[J].Engineering Plastics Application,2013,41(6):126–129.
[4]张延兵,黄金鹤,黄松海,等.抗静电与导电聚甲醛的研究现状[J].塑料科技,2014,42(3):118–123.Zhang Yanbing,Huang Jinhe,Huang Songhai,et al.Research status of antistatic and conductive polyoxymethylene[J].Plastics Science and Technology,2014,42(3):118–123.
[5]张博媛,辛菲,郭朝霞,等.玻璃纤维对聚甲醛基导电复合材料性能的影响[J].高分子学报,2012(2):174–179.Zhang Boyuan,Xin Fei,Guo Zhaoxia,et al.Effect of glass fi ber on the properties of electrically conductive polyoxymethylene composites[J].Acta Polymerica Sinica,2012(2):174–179.
[6]秦旺平,程庆,汪炉林,等.高分子材料的阻燃抗静电改性研究进展[J].工程塑料应用,2014,42(4):123–128.Qin Wangping,Cheng Qing,Wang Lulin,et al.Research progress in flame retardant and antistatic modification for polymer[J].Engineering Plastics Application,2014,42(4):123–128.
[7]尹贺滨,鲍哈达,李杰,等.碳纳米管–炭黑混杂填充聚甲醛复合材料导电材料性能研究[J].高分子学报,2010(9):1 153–1 155.Yin Hebin,Bao Hada,Li Jie,et al.Electrical properties of multiwallde carbon nanotube/carbon black hybrid filler filled polyoxymethylene composites[J].Acta Polymerica Sinica,2010(9):1 153–1 155.
[8]陈玉仙,冯志强,樊钹,等.抗静电聚甲醛及其制备方法:中国,CN105295294A[P].2016-02-03.Chen Yuxian,Feng Zhiqiang,Fan Bo,et al.Antistatic polyoxymethylene and its preparation method:China,CN105295294A[P].2016-02-03.
[9]蒋杰,韦坚红,徐战.高分子材料抗静电剂的研究进展[J].塑料助剂,2016(2):1–4.Jiang Jie,Wei Jianhong,Xu Zhan.Progress in study of antistatic agent used for high molecular material[J].Plastics Additives,2016(2):1–4.
[10]王选伦,李又兵,汤阳昆,等.油酸聚乙二醇酯对聚甲醛抗静电及力学性能的影响研究[J].山东化工,2014,43(2):7–9.Wang Xuanlun,Li Youbin,Tang Yangkun,et al.Study on effect of oleic acid polyglycol ester on the antistatic and mechanical properties of polyoxymethylene[J].Shandong Chemical Industry,2014,43(2):7–9.