摘要
以低密度聚乙烯和线性低密度聚乙烯(60:40)为基础物质,添加阻燃剂聚磷酸铵,构成阻燃体系,研究了阻燃体系的成型加工工艺参数和阻燃性能。研究表明:APP含量为30%时,阻燃性能达到FV-0级;造粒时,螺杆转速选择28～37r/min,牵引速度选择2.8～5.5m/min;制造哑铃型试样时,料筒温度在185～200℃之间,模具温度在91～105℃之间,预热5～10min,充模时间12～21s,制造矩形试样时,料筒温度在185～190℃之间,模具温度在85～110℃之间,预热5～10min,充模时间8～13s。
Low density polyethylene and linear low density polyethylene were used as basic materials and ammonium polyphosphate was added into them to prepare fire-retardant system. The molding technology parameters and fire-retardant properties of the fire-retardant system were studied. The results showed that when ammonium polyphosphate content is 30 %, the fire-retardant level can reach FV-0; the rotational speed of main screws is 28-37 r/min, the pulling speed is 2.8-5.5 m/min; when molding dumbbell samples, the cylinder temperature is between 185-200 ℃, the mold temperature is between 91-105 ℃, the warm-up time is from 5 to 10 min and molding time is from 12 to 21 s; when molding rectangular samples, the cylinder temperature is between 185-190 ℃, the mold temperature is between 85-110 ℃, the warm-up time is from 5 to 10 rain and molding time is from 8 to 13 s.
出处
《包装工程》
CAS
CSCD
北大核心
2012年第19期54-56,71,共4页
Packaging Engineering
基金
天津市高等学校国家级大学生创新创业训练计划(201210069007)
关键词
聚乙烯
聚磷酸铵
阻燃
成型
polyethylene
ammonium polyphosphate
fire-retardant
molding
