首页|ADP/A-SEP复配体系对EVA/MPE线缆复合材料的改性研究

ADP/A-SEP复配体系对EVA/MPE线缆复合材料的改性研究

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采用乙烯基三乙氧基硅烷(A151)对海泡石(SEP)进行表面处理制得A-SEP,并同二乙基次磷酸铝(ADP)复配用作乙烯-醋酸乙烯共聚物(EVA)/茂金属聚乙烯(MPE)线缆复合材料的阻燃改性剂.考察了ADP/A-SEP复配体系组成对EVA/MPE线缆复合材料拉伸性能、阻燃性能和加工流动性的影响.结果表明,ADP虽能明显改善EVA/MPE线缆复合材料的阻燃性能,但对拉伸性能负面影响较大.A-SEP同ADP具有较好的协效阻燃效果,且能够同时改善EVA/MPE线缆复合材料的拉伸性能.当ADP添加量为25%、A-SEP添加量为3%时,EVA/MPE线缆复合材料的拉伸强度与断裂伸长率分别为11.43 MPa和689%;极限氧指数(LOI)达到32%,初始热降解温度和残炭率分别为 352.89℃和 5.75%,体积电阻率为 2.63×1013 Ω·cm.此外A-SEP添加量不超过3%时,其对EVA/MPE/线缆复合材料的加工流动性影响不大.
Modification of ADP/A-SEP Complex on EVA/MPE Cable Composites
A-SEP was prepared by surface treatment of sepiolite(SEP)with vinyltriethoxysilane(A151).The complex of A-SEP and aluminum diethylhosphinate(ADP)was used as flame retardant for ethylene-vinyl acetate copolymer(EVA)/metallocene polyethylene(MPE)cable composites.The effects of the composition of ADP/A-SEP on the tensile properties,flame retardancy,and processability of EVA/MPE cable composites were determined.The results show that ADP can significantly improve the flame retardancy of EVA/MPE cable composites,but it has obvious negative impact on the tensile properties.A-SEP has a good synergistic flame retardancy with ADP and can improve the tensile properties of EVA/MPE cable composites at the same time.The tensile strength and elongation at break of EVA/MPE cable composites are 11.43 MPa and 689%respectively.The limiting oxygen index(LOI)reaches 32%,and the initial thermal degradation temperature and carbon residue rate are352.89℃and5.75%,respectively,and the volume resistivity is 2.63×103 Ω·cm.In addition,when the addition of A-SEP is less than 3%,it has little effect on the processing fluidity of EVA/MPE/cable composites.

Ethylene-vinyl Acetate CopolymerAluminum DiethylhosphinateSepioliteFlame RetardancyTensile PropertyProcessability

常子衡、李薇、刘志成、陈彪、孟强、杜敬亮、杜永刚

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石家庄铁道大学材料科学与工程学院, 河北 石家庄 050043

河北尚华塑料科技有限公司, 河北 石家庄 051130

河北省交通工程与环境协同发展新材料重点实验室, 河北 石家庄 050043

乙烯-醋酸乙烯共聚物 二乙基次磷酸铝 海泡石 阻燃性能 拉伸性能 加工性能

中央引导地方科技发展资金项目——河北省省级科技计划资助河北省自然科学基金项目

206Z1202GB2019210221

2024

塑料工业
中蓝晨光化工研究院有限公司

塑料工业

CSTPCD北大核心
影响因子:0.685
ISSN:1005-5770
年,卷(期):2024.52(1)
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