CN104130493A - 一种高耐油高强度无卤低烟绝缘橡皮及其制备方法 - Google Patents

一种高耐油高强度无卤低烟绝缘橡皮及其制备方法 Download PDF

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CN104130493A
CN104130493A CN201410361125.7A CN201410361125A CN104130493A CN 104130493 A CN104130493 A CN 104130493A CN 201410361125 A CN201410361125 A CN 201410361125A CN 104130493 A CN104130493 A CN 104130493A
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田维生
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Abstract

本发明涉及一种高耐油高强度无卤低烟绝缘橡皮及其制备方法，其中乙丁弹性体50～90份；绝缘母料20～100份；活化剂6.0～10.0份；抗氧剂2.0～3.0份；无机阻燃填充剂70～80份；填充剂10～30份；加工助剂7.0～17.0份；硫化剂10.0～12.0份。本发明采用乙丁弹性体为主体，并用绝缘母料来提高绝缘橡皮耐902#油性能、提高拉伸强度与20℃时体积电阻率；选用无机阻燃填充剂来提高绝缘橡皮的无卤低烟性能。

Description

一种高耐油高强度无卤低烟绝缘橡皮及其制备方法
技术领域
本发明涉及一种电缆绝缘橡皮及其制备方法，特别涉及一种高耐油高强度无卤低烟绝缘橡皮及其制备方法。
背景技术
目前的电缆的绝缘橡皮一般是三元乙丙橡胶，但有些特种电缆的绝缘橡皮，拉伸强度要求在10.3N/mm2以上，耐902#油、100℃、96小时，无卤低烟，20℃时体积电阻率达到1.0*1015Ω.cm以上，这对三元乙丙橡胶来说，就难以实现。
发明内容
本发明的目的是解决上述不足，提供一种拉伸强度在10.3N/mm2以上，耐902#油、100℃、96小时，无卤低烟，20℃时体积电阻率在1.0*1015Ω.cm以上的一种高耐油高强度无卤低烟绝缘橡皮及其制备方法。
实现本发明目的的技术方案是：一种高耐油高强度无卤低烟绝缘橡皮及其制备方法，所述组成及配比，以质量份计为：
上述的高耐油高强度无卤低烟绝缘橡皮，所述乙丁弹性体是含1-丁烯的乙烯共聚物，其性能参数为：190℃下测试的熔融指数为：3.5～4.0g/10min、硬度为：70～95A、维卡软化点为：45～70℃、熔点为：58～78℃、100℃下测试的门尼粘度为：15～22。
上述的高耐油高强度无卤低烟绝缘橡皮，所述绝缘母料为JM-50，是以乙丙橡胶等高分子材料和进口煅烧陶土为主要原料，经密闭式炼胶机混炼造粒加工而成的粒状物。120℃下测试的门尼粘度为20。
上述的高耐油高强度无卤低烟绝缘橡皮，所述活化剂为氧化锌。
上述的高耐油高强度无卤低烟绝缘橡皮，所述抗氧剂为抗氧剂1010。
上述的高耐油高强度无卤低烟绝缘橡皮，所述无机阻燃填充剂为高岭土与碳酸钙的混合物；它们的含量分别为：高岭土为25～65份、碳酸钙为15～45份。
上述的高耐油高强度无卤低烟绝缘橡皮，所述加工助剂为石蜡、离模剂DC313与石蜡油S-580的混合物；它们的含量分别为：石蜡为2.0～5.0份、离模剂DC313为1.0～2.0份、石蜡油S-580为4.0～10.0份。
上述的高耐油高强度无卤低烟绝缘橡皮的制备方法：
步骤一：配料；组成及配比，以质量份计为：
乙丁弹性体的性能参数为：190℃下测试的熔融指数为：3.5～4.0g/10min、硬度为：70～95A、维卡软化点为：45～70℃、熔点为：58～78℃、100℃下测试的门尼粘度为：15～22；绝缘母料为JM-50；活化剂为氧化锌；抗氧剂为抗氧剂1010；无机阻燃填充剂为高岭土与碳酸钙的混合物；它们的含量分别为：高岭土为25～65份、碳酸钙为15～45份；填充剂为滑石粉；加工助剂为石蜡、离模剂DC313与石蜡油S-580的混合物；它们的含量分别为：石蜡为2.0～5.0份、离模剂DC313为1.0～2.0份、石蜡油S-580为4.0～10.0份；硫化剂为复合硫化剂NFPB-W；
步骤二：混炼：先用蒸汽加热密炼机到80℃以上，再将乙丁弹性体与绝缘母料加入密炼机，混炼时间1.5±0.5min,待胶料包辊后加入细料、碳酸钙、一半滑石粉、一半高岭土,加入石蜡油混炼3±0.5min；加入剩余物料；翻斗清扫、压上顶栓混炼时间约4±1min，待负荷稳定后出料；出胶温度110～120℃，在翻包机上至少翻炼3次开条；
步骤三：滤胶：在滤胶机上，用20目、40目、60目滤网各一张，滤胶后称重、每卷重量控制在15～20公斤；
步骤四：加硫：把滤胶后称重的胶卷，再上到密炼机中加硫化剂，胶片温度95℃～105℃，混炼时间1min以下，随后在翻包机上翻炼二次；
步骤五：出片：再到开炼机上翻炼二次后打卷；然后在压延机上碾页，最终出片厚度0.5～0.7mm。
本发明的原理：充分利用乙丁弹性体和绝缘母料JM-50的性能：乙丁弹性体是含少量1-丁烯的乙烯共聚物，密度0.86～0.97g/cm3，低密度范围产品属于线性低密度聚乙烯范畴，高密度范围产品属于高密度聚乙烯范畴。通过采用高压法、溶液法、浆液法、气相法，将乙烯与1-丁烯共聚而成。有着低的结晶度，分子量分布窄，其短的支链分布均匀，是一种性能优越的聚烯烃弹性体。在物理性能上，乙丁弹性体表现为：具有优越的流动性、柔软性和韧度，改良其他聚烯烃的耐冲击特性、较强的抗穿刺、抗撕裂，封口性能好、光学性能及透明性好、提高填充料负荷能力。乙丁弹性体的用途广泛，可以用作软质成型材料的基础树脂，也可以作为一种添加剂，可掺入聚乙烯，聚丙烯和其它热塑性塑胶以改善产品的物理特性。它广泛应用于薄膜、管材、电线电缆、注塑制品、旋转成型等。绝缘母料JM-50是以乙丙橡胶等高分子材料和进口煅烧陶土为主要原料，经密闭式炼胶机混炼造粒加工而成的粒状物。绝缘母料JM-50可与乙丙橡胶和或弹性体并用，用以提高混合胶的电性能。因填料经过特殊处理，JM-50具备较好的综合性能，最终成品胶的电性能较高，可适当降低配方总体的含胶率或增加弹性体比例。
采用了上述技术方案后，本发明具有以下的有益效果：采用乙丁弹性体为主体，并用绝缘母料，可以极大地提高绝缘橡皮耐902#油性能、提高拉伸强度与20℃时体积电阻率；选用无机阻燃填充剂来提高绝缘橡皮的无卤低烟性能；可以使得本发明的绝缘橡皮的拉伸强度要求在10.3N/mm2以上，耐902#油、100℃、96小时，无卤低烟，20℃时体积电阻率达到1.0*1015Ω.cm以上。
具体实施方式
(实施例1－5)
本实施例的高耐油高强度无卤低烟绝缘橡皮的组成、份数、型号见表1：
表1
按照如下步骤制备：
(1)配料：按配方准确计量、称重各种材料；乙丁弹性体的性能参数为：190℃下测试的熔融指数为：3.5～4.0g/10min、硬度为：70～95A、维卡软化点为：45～70℃、熔点为：58～78℃、100℃下测试的门尼粘度为：15～22；绝缘母料为JM-50；
(2)混炼：先用蒸汽加热密炼机到80℃以上，再将乙丁弹性体与绝缘母料加入密炼机，混炼时间1.5±0.5min,待胶料包辊后加入细料、碳酸钙、一半滑石粉、一半高岭土,加入石蜡油混炼3±0.5min；加入剩余物料；翻斗清扫、压上顶栓混炼时间约4±1min，待负荷稳定后出料；出胶温度110～120℃，在翻包机上至少翻炼3次开条；
(3)滤胶：在滤胶机上，用20目、40目、60目滤网各一张，滤胶后称重、每卷重量控制在15～20公斤；
(4)加硫：把滤胶后称重的胶卷，再上到密炼机中加硫化剂，胶片温度95℃～105℃，混炼时间1min以下，随后在翻包机上翻炼二次；
(5)出片：再到开炼机上翻炼二次后打卷；然后在压延机上碾页，最终出片厚度0.5～0.7mm。
本实施例中：
将上述各种材料混炼后的胶料的性能见表2：
表2
备注：M(1+4)100℃为门尼粘度；
MH为硫变仪上170℃*15min的最高转矩；
t10为硫变仪上170℃*15min的工艺焦烧时间；
t90为硫变仪上170℃*15min的工艺正硫化时间；
浸902#油条件为：100℃*96小时。
以上所述的具体实施例，对本发明的目的、技术方案和有益效果进行了进一步详细说明，所应理解的是，以上所述仅为本发明的具体实施例而已，并不用于限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (7)

1.一种高耐油高强度无卤低烟绝缘橡皮，其特征在于：所述组成及配比，以质量份计为：
所述乙丁弹性体是含1-丁烯的乙烯共聚物，其性能参数为：190℃下测试的熔融指数为：3.5～4.0g/10min、硬度为：70～95A、维卡软化点为：45～70℃、熔点为：58～78℃、100℃下测试的门尼粘度为：15～22。
2.根据权利要求1所述的一种高耐油高强度无卤低烟绝缘橡皮，其特征在于：所述绝缘母料为JM-50，包含乙丙橡胶和进口煅烧陶土，经密闭式炼胶机混炼造粒加工而成为粒状物，120℃下测试的门尼粘度为20。
3.根据权利要求1所述的一种高耐油高强度无卤低烟绝缘橡皮，其特征在于：所述活化剂为氧化锌。
4.根据权利要求1所述的一种高耐油高强度无卤低烟绝缘橡皮，其特征在于：所述抗氧剂为抗氧剂1010。
5.根据权利要求1所述的一种高耐油高强度无卤低烟绝缘橡皮，其特征在于:所述无机阻燃填充剂为高岭土与碳酸钙的混合物；它们的含量分别为：高岭土为25～65份、碳酸钙为15～45份。
6.根据权利要求1所述的一种高耐油高强度无卤低烟绝缘橡皮，其特征在于:所述加工助剂为石蜡、离模剂DC313与石蜡油S-580的混合物；它们的含量分别为：石蜡为2.0～5.0份、离模剂DC313为1.0～2.0份、石蜡油S-580为4.0～10.0份。
7.一种高耐油高强度无卤低烟绝缘橡皮的制备方法，其特征在于包括以下步骤：
步骤一：配料；组成及配比，以质量份计为：
乙丁弹性体的性能参数为：190℃下测试的熔融指数为：3.5～4.0g/10min、硬度为：70～95A、维卡软化点为：45～70℃、熔点为：58～78℃、100℃下测试的门尼粘度为：15～22；绝缘母料为JM-50；活化剂为氧化锌；抗氧剂为抗氧剂1010；无机阻燃填充剂为高岭土与碳酸钙的混合物；它们的含量分别为：高岭土为25～65份、碳酸钙为15～45份；填充剂为滑石粉；加工助剂为石蜡、离模剂DC313与石蜡油S-580的混合物；它们的含量分别为：石蜡为2.0～5.0份、离模剂DC313为1.0～2.0份、石蜡油S-580为4.0～10.0份；硫化剂为复合硫化剂NFPB-W；
步骤二：混炼：先用蒸汽加热密炼机到80℃以上，再将乙丁弹性体与绝缘母料加入密炼机，混炼时间1.5±0.5min,待胶料包辊后加入细料、碳酸钙、一半滑石粉、一半高岭土,加入石蜡油混炼3±0.5min；加入剩余物料；翻斗清扫、压上顶栓混炼时间约4±1min，待负荷稳定后出料；出胶温度110～120℃，在翻包机上至少翻炼3次开条；
步骤三：滤胶：在滤胶机上，用20目、40目、60目滤网各一张，滤胶后称重、每卷重量控制在15～20公斤；
步骤四：加硫：把滤胶后称重的胶卷，再上到密炼机中加硫化剂，胶片温度95℃～105℃，混炼时间1min以下，随后在翻包机上翻炼二次；
步骤五：出片：再到开炼机上翻炼二次后打卷；然后在压延机上碾页，最终出片厚度0.5～0.7mm。
CN201410361125.7A 2014-07-25 2014-07-25 一种高耐油高强度无卤低烟绝缘橡皮及其制备方法 Pending CN104130493A (zh)

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CN106867067A (zh) * 2017-02-14 2017-06-20 远东电缆有限公司 一种潜油电泵电缆用耐20号机油绝缘橡皮及制备方法

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