CN109651821A - 一种有机硅泡棉及其制备方法 - Google Patents

一种有机硅泡棉及其制备方法 Download PDF

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CN109651821A
CN109651821A CN201811620114.0A CN201811620114A CN109651821A CN 109651821 A CN109651821 A CN 109651821A CN 201811620114 A CN201811620114 A CN 201811620114A CN 109651821 A CN109651821 A CN 109651821A
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万炜涛
卜斌
陈田安
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SHENZHEN DARBOND INTERFACE MATERIALS CO Ltd
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Abstract

本发明属于泡棉材料技术领域,尤其涉及一种有机硅泡棉及其制备方法。本发明的有机硅泡棉具有高韧性、高延展性、高弹性等性能,且能够很好的吸收机械振动和物理冲击;具有优异的耐高低温性能、良好的防潮和隔热性能、出色的电气绝缘性能,使得有机硅泡棉材料可以在‑40~200℃的温度下连续工作,隔绝环境中的湿气、热量和噪音,优良的电气绝缘性能保证设备的安全使用。该有机硅泡棉材料的阻燃效果能够达到UL‑94V0级别,燃烧后也能很快自熄,燃烧产物主要是二氧化硅,没有有毒气体释放,对环境没有污染,能够为人身安全提供更好的保障。该有机硅泡棉材料制作工艺简单,原料价格低廉,来源稳定,安装方便,能够大大降低使用成本。

Description

一种有机硅泡棉及其制备方法
技术领域
本发明属于泡棉材料技术领域,尤其涉及一种有机硅泡棉及其制备方法。
背景技术
有机硅泡棉材料是一种高性能软质泡沫材料,由于有机硅结构的特殊性,使之具有许多其他材料所不能同时具备的优异性能,与其他高分子泡棉材料相比,其具有卓越的耐高低温性、优良的电绝缘性和化学稳定性、良好的耐老化性、突出的憎水防潮性和生理惰性等。
目前的有机硅泡棉发泡时采用的发泡剂为无机粉体或化学发泡剂,使用过氧化物作为催化剂,发泡过程中,发泡倍率不易控制,泡孔大小不均匀,且泡孔容易破裂,形成开孔型泡棉,泡棉中还会有发泡剂残留物和过氧化物,导致泡棉不能达到环保要求。
发明内容
本发明针对上述现有技术存在的不足,提供一种有机硅泡棉及其制备方法。
本发明解决上述技术问题的技术方案如下:一种有机硅泡棉,其组分按重量份数计包括:基础树脂A 15-25份、基础树脂B 30-40份、交联剂5-15份、补强剂6-15份、阻燃剂20-35份、抗老化剂0-0.4份、催化剂0.3-0.6份和抑制剂0.5-2份。
进一步,所述基础树脂A为粘度10000-100000cps的羟基硅油,羟基含量为0.3%-0.8%;
所述基础树脂B为粘度100000-700000cps的乙烯基硅油,乙烯基含量为0.08%-0.32%;
所述交联剂为粘度200-2000cps的含氢硅油,氢含量为0.18%-1.6%;
所述补强剂为气相白炭黑、沉淀白炭黑、纳米碳酸钙或MQ硅树脂中的一种或两种以上混合;
所述阻燃剂为三聚氰胺磷酸盐、聚多磷酸盐、三氧化二锑或氢氧化铝粉中的一种或两种以上,粒径为0.1-30μm;
所述抗老化剂为2,8-二叔丁基-4-甲基苯酚;
所述催化剂为铂金络合物,铂金含量为1000ppm-10000ppm;
所述抑制剂为炔基环己醇。
本发明的第二个目的在于提供上述有机硅泡棉的制备方法:将基础树脂A、基础树脂B、交联剂、补强剂、阻燃剂、抗老化剂、抑制剂依次加入到搅拌釜中搅拌100-150min,转速为35-65rpm,控制温度为25℃;然后加入催化剂,搅拌10-30min,转速为35-40rpm;抽真空脱去气泡,将物料用压料机压入喷枪中,使用压力为0.9MPa的空气将物料喷涂于器件表面,自然发泡10min,制得有机硅泡棉。
本发明的特点和有益效果在于:
本发明的有机硅泡棉具有高韧性、高延展性、高弹性等性能,且能够很好的吸收机械振动和物理冲击;具有优异的耐高低温性能、良好的防潮和隔热性能、出色的电气绝缘性能,使得有机硅泡棉材料可以在-40~200℃的温度下连续工作,隔绝环境中的湿气、热量和噪音,优良的电气绝缘性能保证设备的安全使用。本发明的有机硅泡棉材料的阻燃效果能够达到UL-94VO级别,燃烧后也能很快自熄,燃烧产物主要是二氧化硅,没有有毒气体释放,对环境没有污染,能够为人身安全提供更好的保障。该有机硅泡棉材料制作工艺简单,原料价格低廉,来源稳定,安装方便,能够大大降低使用成本。该有机硅泡棉材料可在200℃高温下连续使用,能够经受250℃瞬时高温,通常作为阻尼、隔声、减振、电绝缘封装等材料,应用于航空航天领域、智能传感器领域、生物医学领域和工业电子领域等。
具体实施方式
以下结合实例对本发明的原理和特征进行描述,所举实例只用于解释本发明,并非用于限定本发明的范围。
实施例1
一种有机硅泡棉,其组分按重量份数计包括:羟基含量为0.5%的羟基硅油(粘度为20000cps)125g、乙烯基含量为0.08%的乙烯基硅油(粘度为100000cps)200g、含氢量为1.6%的含氢硅油(粘度为2000cps)65g、粒径为20μm的气相白炭黑40g、阻燃剂三聚氰胺磷酸盐150g、催化剂铂金络合物2.0g和抑制剂炔基环己醇10g。
上述有机硅泡棉的制备方法:将羟基含量为0.5%的羟基硅油(粘度为20000cps)125g、乙烯基含量为0.08%的乙烯基硅油(粘度为100000cps)200g、含氢量为1.6%的含氢硅油(粘度为2000cps)65g、粒径为20μm的气相白炭黑40g、阻燃剂三聚氰胺磷酸盐150g和抑制剂炔基环己醇10g依次加入到搅拌釜中搅拌120min,转速为35-65rpm,控制温度为25℃;然后加入催化剂铂金络合物2.0g,搅拌30min,转速为35-40rpm;抽真空脱去气泡,将物料用压料机压喷枪中,使用0.9MPa的压力,将物料喷涂在一块固定在物架上的铝基板表面,在25℃环境条件下,自然发泡10min,成型为一块完整的有机硅泡绵层外壳,将铝基板全部包裹在中间。
将所得有机硅泡棉分别经-20~150℃的冷热冲击和温度85℃、湿度85%恒温恒湿老化测试,对比各性能的变化,结果如表1所示。
表1
由表1数据可以看出,有机硅泡棉材料的撕裂强度在老化前后几乎没有改变,也没有异样变化,表明产品具有很好的稳定性。
实施例2
一种有机硅泡棉,其组分按重量份数计包括:羟基含量为0.8%的羟基硅油(粘度为50000cps)108g、乙烯基含量为0.32%的乙烯基硅油(粘度为700000cps)210g、含氢量为1.6%的含氢硅油(粘度为2000cps)78g、粒径为20μm的气相白炭黑40g、粒径0.2μm纳米碳酸钙粉20g、阻燃剂三聚氰胺磷酸盐95g、阻燃剂三氧化二锑37g、抗老化剂2,8-二叔丁基-4-甲基苯酚2.4g、催化剂铂金络合物3.0g和抑制剂炔基环己醇6g。
上述有机硅泡棉的制备方法:将羟基含量为0.8%的羟基硅油(粘度为50000cps)108g、乙烯基含量为0.32%的乙烯基硅油(粘度为700000cps)210g、含氢量为1.6%的含氢硅油(粘度为2000cps)78g、粒径为20μm的气相白炭黑40g、粒径0.2μm纳米碳酸钙粉20g、阻燃剂三聚氰胺磷酸盐95g、阻燃剂三氧化二锑37g、抗老化剂2,8-二叔丁基-4-甲基苯酚2.4g和抑制剂炔基环己醇6g依次加入到搅拌釜中搅拌120min,转速为35-65rpm,控制温度为25℃;然后加入催化剂铂金络合物3.0g,搅拌30min,转速为35-40rpm;抽真空脱去气泡,将物料用压料机压喷枪中,使用0.9MPa的压力,将物料喷涂在一段塑料圆管表面,在25℃环境条件下,自然发泡10min,成型为一层有机硅泡绵层外壳,将塑料圆管表面完全包裹在中间。
以上所述仅为本发明的较佳实施例,并不用以限制本发明,凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。

Claims (3)

1.一种有机硅泡棉,其特征在于,其组分按重量份数计包括:基础树脂A 15-25份、基础树脂B 30-40份、交联剂5-15份、补强剂6-15份、阻燃剂20-35份、抗老化剂0-0.4份、催化剂0.3-0.6份和抑制剂0.5-2份。
2.根据权利要求1所述的有机硅泡棉,其特征在于,所述基础树脂A为粘度10000-100000cps的羟基硅油,羟基含量为0.3%-0.8%;
所述基础树脂B为粘度100000-700000cps的乙烯基硅油,乙烯基含量为0.08%-0.32%;
所述交联剂为粘度200-2000cps的含氢硅油,氢含量为0.18%-1.6%;
所述补强剂为气相白炭黑、沉淀白炭黑、纳米碳酸钙或MQ硅树脂中的一种或两种以上混合;
所述阻燃剂为三聚氰胺磷酸盐、聚多磷酸盐、三氧化二锑或氢氧化铝粉中的一种或两种以上,粒径为0.1-30μm;
所述抗老化剂为2,8-二叔丁基-4-甲基苯酚;
所述催化剂为铂金络合物,铂金含量为1000ppm-10000ppm;
所述抑制剂为炔基环己醇。
3.一种权利要求1所述有机硅泡棉的制备方法,其特征在于,将基础树脂A、基础树脂B、交联剂、补强剂、阻燃剂、抗老化剂、抑制剂、导电粉体依次加入到搅拌釜中搅拌100-150min,转速为35-65rpm,控制温度为25℃;然后加入催化剂,搅拌10-30min,转速为35-40rpm;抽真空脱去气泡,将物料用压料机压入喷枪中,使用压力为0.9MPa的空气将物料喷涂于器件表面,自然发泡10min,制得有机硅泡棉。
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CN110229525A (zh) * 2019-06-18 2019-09-13 北京化工大学常州先进材料研究院 一种离子化低形变有机硅泡棉材料的制备
CN111269574A (zh) * 2020-03-16 2020-06-12 晋传华 一种应用在新能源汽车电池组的泡棉材料
CN112795198A (zh) * 2020-12-31 2021-05-14 广德祥源新材科技有限公司 一种高阻燃有机硅泡棉片材及其制备方法
CN113122001A (zh) * 2021-04-20 2021-07-16 浙江清优材料科技有限公司 一种耐火隔热的电芯间用有机硅泡棉及其制备方法

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Application publication date: 20190419