CN104877271A - 一种镁盐晶须增强汽车线束用氟橡胶改性pvc电缆料及其制备方法 - Google Patents
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Abstract
一种镁盐晶须增强汽车线束用氟橡胶改性PVC电缆料,由下列重量份的原料制成:PVC65-70、钙锌稳定剂7-8、偏苯三酸三辛酯40-50、三烯丙基异氰脲酸酯2.5-3、过氧化二异丙苯0.2-0.3、炭黑1-2、六氟丙烯三元共聚橡胶20-25、纳米氧化锌4-4.5、双酚AF2.5-3、纳米级氧化铋微粉2-2.5、二乙基二硫代氨基甲酸锌2.4-2.8、镁盐晶须2.8-3.2、马来酸酐2-2.5、二甲苯1.2-1.6、热塑性聚氨酯18-22、抗氧剂1010 0.8-0.9。本发明电缆料的耐低温性、耐热性、抗氧化性、耐油性、耐腐蚀性、绝缘性、气密性和耐大气老化性好,适用于制作汽车的仪表、油箱等部件的电缆。
Description
技术领域
本发明涉及电缆料领域,尤其涉及一种镁盐晶须增强汽车线束用氟橡胶改性PVC电缆料及其制备方法。
背景技术
热塑性聚氨酯( TPU) 是一种性能极好的弹性体,具有优良的耐酸碱性、耐油性和力学性能,并且使用温度范围大,可作为PVC 材料的增韧剂或改性剂。TPU 还能提高PVC 材料的加工流动性,起到增塑效果。但由于TPU 价格较贵,且阻燃性较差,其应用受到限制。PVC 的牌号多,应用广,成本低,是一种重要的通用塑料。TPU 与PVC混合交联,能有效降低TPU的成本,提高性能,扩大其应用范围; 另一方面,TPU 的加入能有效改善PVC 的耐低温性能。
《汽车用PVC/热塑性聚氨酯交联电缆料的研制》一文使用配方: PVC100 份,钙锌稳定剂8份,TOTM 50份,TAIC 3份,DCP 0.2份,TPU 30份,抗氧剂0.8 份,其他助剂适量,生产出合格的汽车用电缆料,但是该电缆料在耐热性、耐油性、耐紫外性、抗氧化性、耐腐蚀性、耐大气老化性、气密性、耐磨性、耐低温性等方面还不尽如人意。
氟橡胶具有非常优异的耐辐射、耐高温、耐油、耐高真空及耐酸碱、耐多种化学药品的特点,可以使用氟橡胶以及其他原料和工艺对PVC/热塑性聚氨酯交联电缆料进行改性,以提高该电缆料的各项性能。
发明内容
本发明的目的在于提供一种镁盐晶须增强汽车线束用氟橡胶改性PVC电缆料,该电缆料的耐低温性、耐热性、抗氧化性、耐油性、耐腐蚀性、绝缘性、气密性和耐大气老化性好,而且耐磨性、韧性好,适用于制作汽车的仪表、油箱等部件的电缆。
本发明的技术方案如下:
一种镁盐晶须增强汽车线束用氟橡胶改性PVC电缆料,其特征在于由下列重量份的原料制成:PVC65-70、钙锌稳定剂7-8、偏苯三酸三辛酯40-50、三烯丙基异氰脲酸酯2.5-3、过氧化二异丙苯0.2-0.3、炭黑1-2、六氟丙烯三元共聚橡胶20-25、纳米氧化锌4-4.5、双酚AF2.5-3、纳米级氧化铋微粉2-2.5、二乙基二硫代氨基甲酸锌2.4-2.8、镁盐晶须2.8-3.2、马来酸酐2-2.5、二甲苯1.2-1.6、热塑性聚氨酯18-22、抗氧剂1010 0.8-0.9。
所述的镁盐晶须增强汽车线束用氟橡胶改性PVC电缆料的生产方法,其特征在于:
(1)将六氟丙烯三元共聚橡胶、过氧化二异丙苯、纳米氧化锌、纳米级氧化铋微粉、镁盐晶须、马来酸酐、二甲苯混合,送入开炼机中,在60-70℃下开练4-5分钟,得到胶体;
(2)将第(1)步得到的胶体与PVC、钙锌稳定剂、偏苯三酸三辛酯、三烯丙基异氰脲酸酯、抗氧剂1010送入高速混合机中,高速搅拌,当物料温度达到115-120℃时,将物料放入冷混机中低速搅拌,当物料冷却至45-55℃时出料,得到混合物料;
(3)在不加热的情况下,将步骤(2)制得的物料与其他剩余成分送入高速混合机中混合4-5分钟,再送入平行双螺杆挤出机,在140-145℃下挤出造粒;
(4)将第(3)步得到的粒料送入开炼机中在140-145℃下开片,再送入热模压机中,在170-180℃下压片处理3-4分钟,在室温下交联1-2个小时,即得。
本发明的有益效果
本发明电缆料使用热塑性聚氨酯、氟橡胶与PVC共混,交联改性,能有效提高电缆料的性能,能有效改善PVC的耐低温性、耐热性、抗氧化性、耐油性、耐腐蚀性、绝缘性、气密性和耐大气老化性,扩大其应用范围;通过使用镁盐晶须、纳米氧化锌、纳米级氧化铋微粉,提高了电缆料的耐磨性、耐热性和韧性,适用于制作汽车的仪表、油箱等部件的电缆。
具体实施方式
一种镁盐晶须增强汽车线束用氟橡胶改性PVC电缆料,由下列重量份(公斤)的原料制成:PVC68、钙锌稳定剂7.5、偏苯三酸三辛酯45、三烯丙基异氰脲酸酯2.8、过氧化二异丙苯0.2、炭黑1.5、六氟丙烯三元共聚橡胶23、纳米氧化锌4.3、双酚AF2.8、纳米级氧化铋微粉2.3、二乙基二硫代氨基甲酸锌2.5、镁盐晶须3、马来酸酐2。3、二甲苯1.4、热塑性聚氨酯20、抗氧剂1010 0.8。
所述的镁盐晶须增强汽车线束用氟橡胶改性PVC电缆料的生产方法,其特征在于:
(1)将六氟丙烯三元共聚橡胶、过氧化二异丙苯、纳米氧化锌、纳米级氧化铋微粉、镁盐晶须、马来酸酐、二甲苯混合,送入开炼机中,在65℃下开练4分钟,得到胶体;
(2)将第(1)步得到的胶体与PVC、钙锌稳定剂、偏苯三酸三辛酯、三烯丙基异氰脲酸酯、抗氧剂1010送入高速混合机中,高速搅拌,当物料温度达到118℃时,将物料放入冷混机中低速搅拌,当物料冷却至50℃时出料,得到混合物料;
(3)在不加热的情况下,将步骤(2)制得的物料与其他剩余成分送入高速混合机中混合4分钟,再送入平行双螺杆挤出机,在143℃下挤出造粒;
(4)将第(3)步得到的粒料送入开炼机中在143℃下开片,再送入热模压机中,在175℃下压片处理3分钟,在室温下交联1.5个小时,即得。
实验数据:
经测试该实施例电缆料的拉伸强度为23.6MPa,断裂伸长率为308%,老化后拉伸强度变化率为12%,老化后断裂伸长率变化率为-15%,200℃热稳定时间为170min,冲击脆化温度为-40℃,20℃体积电阻率为2.8×1012Ω﹒m,热延伸率为120%。
Claims (2)
1.一种镁盐晶须增强汽车线束用氟橡胶改性PVC电缆料,其特征在于由下列重量份的原料制成:PVC65-70、钙锌稳定剂7-8、偏苯三酸三辛酯40-50、三烯丙基异氰脲酸酯2.5-3、过氧化二异丙苯0.2-0.3、炭黑1-2、六氟丙烯三元共聚橡胶20-25、纳米氧化锌4-4.5、双酚AF2.5-3、纳米级氧化铋微粉2-2.5、二乙基二硫代氨基甲酸锌2.4-2.8、镁盐晶须2.8-3.2、马来酸酐2-2.5、二甲苯1.2-1.6、热塑性聚氨酯18-22、抗氧剂1010 0.8-0.9。
2.根据权利要求1所述的镁盐晶须增强汽车线束用氟橡胶改性PVC电缆料的生产方法,其特征在于:
(1)将六氟丙烯三元共聚橡胶、过氧化二异丙苯、纳米氧化锌、纳米级氧化铋微粉、镁盐晶须、马来酸酐、二甲苯混合,送入开炼机中,在60-70℃下开练4-5分钟,得到胶体;
(2)将第(1)步得到的胶体与PVC、钙锌稳定剂、偏苯三酸三辛酯、三烯丙基异氰脲酸酯、抗氧剂1010送入高速混合机中,高速搅拌,当物料温度达到115-120℃时,将物料放入冷混机中低速搅拌,当物料冷却至45-55℃时出料,得到混合物料;
(3)在不加热的情况下,将步骤(2)制得的物料与其他剩余成分送入高速混合机中混合4-5分钟,再送入平行双螺杆挤出机,在140-145℃下挤出造粒;
(4)将第(3)步得到的粒料送入开炼机中在140-145℃下开片,再送入热模压机中,在170-180℃下压片处理3-4分钟,在室温下交联1-2个小时,即得。
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CN106117895A (zh) * | 2016-07-22 | 2016-11-16 | 安徽电气集团股份有限公司 | 一种耐热抗冲击聚氯乙烯电缆料 |
CN116102830A (zh) * | 2023-03-17 | 2023-05-12 | 厦门爱瑞克电子有限公司 | 一种橡塑组合物及其应用 |
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