CN105037906A - 一种玻璃碳纳米纤维增强家电用无卤阻燃绝缘料及其制备方法 - Google Patents
一种玻璃碳纳米纤维增强家电用无卤阻燃绝缘料及其制备方法 Download PDFInfo
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Abstract
一种玻璃碳纳米纤维增强家电用无卤阻燃绝缘料,由下列重量份的原料制成:硅酮1-1.5、异氰尿酸三缩水甘油酯2-3、低密度聚乙烯树脂10-15、乙烯基三甲氧基硅烷0.3-0.4、过氧化二异丙苯0.04-0.08、月桂酸二正丁基锡0.01-0.02、氢氧化镁50-60、EVA60-65、高密度聚乙烯树脂20-23、玻璃碳纳米纤维5-6、三氧化二铝5-6。本发明绝缘料使用了低密度聚乙烯等原料对无机阻燃填料进行交联改性,提高了阻燃填料与树脂基料的相容性,防止开裂,折痕,漏电现象;通过使用玻璃碳纳米纤维、三氧化二铝,经过改性填充,不仅提高了绝缘料的耐热性,而且提高了绝缘性和抗拉强度、耐冲击性能。
Description
技术领域
本发明涉及电缆料领域,尤其涉及一种玻璃碳纳米纤维增强家电用无卤阻燃绝缘料及其制备方法。
背景技术
电缆料的无卤阻燃是近年来电缆料阻燃领域研究的热点,但由于无卤阻燃剂阻燃效率低,与基体相容性差,因此无卤阻燃电缆料普遍存在力学性能差的问题,使得无卤阻燃电缆料很难推广应用。乙烯-醋酸乙烯酯共聚物(EVA)是电线电缆用塑料领域的新宠,其在较宽的温度范围内具有良好的柔软性、耐冲击性、耐环境应力开裂性,以EVA作为电缆料基体对其进行无卤阻燃,并改善阻燃后电缆料的力学性能使其满足低烟无卤阻燃电缆护套料的技术性能要求,对于低烟无卤阻燃电缆料的推广应用具有很大的价值。
将50份氢氧化镁(MH)与8份微胶囊化红磷(RP)复配作为无卤阻燃剂对EVA进行了无卤阻燃,得到的无卤阻燃复合材料的垂直燃烧级别达到了FV-0级,氧指数在30%以上,但是复合材料的力学性能较差,尤其是拉伸强度和断裂伸长率与YD/T1113—2001标准中要求的数值差距较大,不能满足使用要求。因此需要进一步改进电缆料的性能。
目前,市场上的电缆料还存在着不耐划伤,不耐折叠,并且折叠后或者碰撞后电缆表面出现白色印痕、耐老化性能差,耐水、耐油、耐磨性差等问题,影响家电使用的安全性和使用寿命,需要进一步改进。
发明内容
本发明的目的在于提供一种玻璃碳纳米纤维增强家电用无卤阻燃绝缘料,该绝缘料能够防止开裂,折痕,漏电现象,耐热性好,抗拉强度高,耐冲击性能好。
本发明的技术方案如下:
一种玻璃碳纳米纤维增强家电用无卤阻燃绝缘料,其特征在于由下列重量份的原料制成:硅酮1-1.5、异氰尿酸三缩水甘油酯2-3、低密度聚乙烯树脂10-15、乙烯基三甲氧基硅烷0.3-0.4、过氧化二异丙苯0.04-0.08、月桂酸二正丁基锡0.01-0.02、氢氧化镁50-60、EVA60-65、高密度聚乙烯树脂20-23、玻璃碳纳米纤维5-6、三氧化二铝5-6。
所述的玻璃碳纳米纤维增强家电用无卤阻燃绝缘料的生产方法,其特征在于:
(1)将硅酮、异氰尿酸三缩水甘油酯、玻璃碳纳米纤维、三氧化二铝,混合研磨均匀,再与低密度聚乙烯树脂、乙烯基三甲氧基硅烷、过氧化二异丙苯、月桂酸二正丁基锡、氢氧化镁送入混料机,在100-120℃、900-1000转/分的速度下混合8-10分钟,再送入双螺杆机,在140-145℃、300-400转/分的速度下挤出,得到混合物料;
(2)将第(1)步得到的物料过水降温,除去多余的水分,切粒,得到粒料;
(3)将第(2)步得到的粒料与EVA、高密度聚乙烯树脂送入混料机,在80-100℃、800-900转/分的速度下混合3-4分钟,再加入其它剩余成分,继续混合5-6分钟,再送入双螺杆机,在120-140℃、300-400转/分的速度下挤出造粒,即得;
本发明的有益效果
本发明绝缘料使用了低密度聚乙烯等原料对无机阻燃填料进行交联改性,得到表面半交联状态的阻燃填料,再与基础树脂进行混合交联,提高了阻燃填料与树脂基料的相容性,防止开裂,折痕,漏电现象;通过使用玻璃碳纳米纤维、三氧化二铝,经过改性填充,不仅提高了绝缘料的耐热性,而且提高了绝缘性和抗拉强度、耐冲击性能。
具体实施方式
一种玻璃碳纳米纤维增强家电用无卤阻燃绝缘料,由下列重量份(公斤)的原料制成:硅酮1.3、异氰尿酸三缩水甘油酯2.5、低密度聚乙烯树脂13、乙烯基三甲氧基硅烷0.3、过氧化二异丙苯0.05、月桂酸二正丁基锡0.01、氢氧化镁55、EVA63、高密度聚乙烯树脂22、玻璃碳纳米纤维5.5、三氧化二铝5.5。
所述的玻璃碳纳米纤维增强家电用无卤阻燃绝缘料的生产方法,其特征在于:
(1)将硅酮、异氰尿酸三缩水甘油酯、玻璃碳纳米纤维、三氧化二铝,混合研磨均匀,再与低密度聚乙烯树脂、乙烯基三甲氧基硅烷、过氧化二异丙苯、月桂酸二正丁基锡、氢氧化镁送入混料机,在110℃、950转/分的速度下混合9分钟,再送入双螺杆机,在143℃、350转/分的速度下挤出,得到混合物料;
(2)将第(1)步得到的物料过水降温,除去多余的水分,切粒,得到粒料;
(3)将第(2)步得到的粒料与EVA、高密度聚乙烯树脂送入混料机,在90℃、850转/分的速度下混合3分钟,再加入其它剩余成分,继续混合6分钟,再送入双螺杆机,在130℃、350转/分的速度下挤出造粒,即得;
实验数据:
经测试该绝缘料的拉伸强度为19MPa,冲击强度为38kJ/m2,断裂伸长率为148%,氧指数为36.6,垂直燃烧级别为FV-0级,熔体流动速率为3.7g/10min。
Claims (2)
1.一种玻璃碳纳米纤维增强家电用无卤阻燃绝缘料,其特征在于由下列重量份的原料制成:硅酮1-1.5、异氰尿酸三缩水甘油酯2-3、低密度聚乙烯树脂10-15、乙烯基三甲氧基硅烷0.3-0.4、过氧化二异丙苯0.04-0.08、月桂酸二正丁基锡0.01-0.02、氢氧化镁50-60、EVA60-65、高密度聚乙烯树脂20-23、玻璃碳纳米纤维5-6、三氧化二铝5-6。
2.根据权利要求1所述的玻璃碳纳米纤维增强家电用无卤阻燃绝缘料的生产方法,其特征在于:
(1)将硅酮、异氰尿酸三缩水甘油酯、玻璃碳纳米纤维、三氧化二铝,混合研磨均匀,再与低密度聚乙烯树脂、乙烯基三甲氧基硅烷、过氧化二异丙苯、月桂酸二正丁基锡、氢氧化镁送入混料机,在100-120℃、900-1000转/分的速度下混合8-10分钟,再送入双螺杆机,在140-145℃、300-400转/分的速度下挤出,得到混合物料;
(2)将第(1)步得到的物料过水降温,除去多余的水分,切粒,得到粒料;
(3)将第(2)步得到的粒料与EVA、高密度聚乙烯树脂送入混料机,在80-100℃、800-900转/分的速度下混合3-4分钟,再加入其它剩余成分,继续混合5-6分钟,再送入双螺杆机,在120-140℃、300-400转/分的速度下挤出造粒,即得。
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CN103571008A (zh) * | 2013-09-30 | 2014-02-12 | 芜湖航天特种电缆厂 | 一种低烟无卤阻燃聚烯烃电缆料 |
CN104277284A (zh) * | 2014-09-10 | 2015-01-14 | 江苏金聚合金材料有限公司 | 一种柔性低烟无卤电缆料及其制备方法 |
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CN103571008A (zh) * | 2013-09-30 | 2014-02-12 | 芜湖航天特种电缆厂 | 一种低烟无卤阻燃聚烯烃电缆料 |
CN104277284A (zh) * | 2014-09-10 | 2015-01-14 | 江苏金聚合金材料有限公司 | 一种柔性低烟无卤电缆料及其制备方法 |
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