CN104356561B - 软密封闸阀阀板的衬胶胶料制备方法 - Google Patents

软密封闸阀阀板的衬胶胶料制备方法 Download PDF

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CN104356561B
CN104356561B CN201410632203.2A CN201410632203A CN104356561B CN 104356561 B CN104356561 B CN 104356561B CN 201410632203 A CN201410632203 A CN 201410632203A CN 104356561 B CN104356561 B CN 104356561B
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王胜原
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Abstract

本发明公开了软密封闸阀阀板的衬胶胶料的制备方法，它包括以下步骤：（1）、A胶料的制备；（2）、B胶料的制备；（3）、A胶料和B胶料的混炼：将上述制得的A胶料与B胶料按重量比为A:B=(2‑3):1混合后，加入到开炼机中，进行混炼，薄通3‑5遍即可。本发明的有益效果是胶料无需塑炼，只需较低的温度即可制得，将胶料硫化在软密封阀板的表面和阀孔内表面，所得的衬胶阀板具有良好的弹性、硬度、气密性、耐热性及很好的记忆性等特点，同时材料成本低；混炼时加入二氧化钛可以提高胶料的物理稳定性，进一步延长寿命。

Description

软密封闸阀阀板的衬胶胶料制备方法
技术领域
本发明涉及衬胶胶料的制备方法，尤其涉及软密封闸阀阀板的衬胶胶料的制备方法。
背景技术
软密封闸阀，工业用阀，软密封闸阀的启闭件是闸板，闸板的运动方向与流体方向相垂直，闸阀只能作全开和全关 ,不能作调节和节流。闸板有两个密封面 ,最常用的模式闸板的两个密封面形成楔形、楔形角。从水质上讲：软密封闸阀避免了管网中水质的二次污染，减少水质与金属直接接触，防止杂物阻塞阀门。从制造上讲：软密封闸阀具有开关轻巧、密封可靠、完全密封无泄漏、弹性记忆佳、使用寿命长等优点。在给排水、石化、建筑、能源系统等流体管网上广泛使用。软密封的密封关键就在于阀板包胶。软密封阀板的衬胶好坏直接影响阀门的密封及使用寿命。如果选料及配比不太理想，导致衬胶的气密性不理想、耐热性差、记忆性差和使用寿命短，且目前的衬胶价格贵，成本高。中国发明专利公开号CN103275366A公开了一种“软密封闸阀阀板的衬胶胶料及制备方法”，其中A胶料和B胶料分别经过塑炼和混炼，操作繁琐，且消耗能源较多。
发明内容
本发明要解决的技术问题是现有的软密封闸阀阀板的衬胶的气密性不理想、耐热性差、记忆性差和使用寿命短，成本高、制作过程消耗能源高，为此提供一种软密封闸阀阀板的衬胶胶料及制备方法。
本发明的技术方案是：软密封闸阀阀板的衬胶胶料的制备方法，它包括以下步骤：（1）、A胶料的制备：
按重量份计，将甲基丙稀酸羟乙酯10-15份、三缩四乙二醇双丙稀酸酯15-30份、过硫酸钠1-2份、瓜尔胶2-3份、硅酸铝纤维5-10份、气相白炭黑10-13份、聚丙二醇二缩水甘油醚0.4-1份加入到去离子水中混合制得单体溶液，然后将天然橡胶SVR10粉末40-55份加入到所制备的单体溶液中，混合制得悬浮体系；对悬浮体系进行加热、加压，制成胚体，将胚体在500-600℃下保温30-40min制得A胶料；
（2）、B胶料的制备：
按重量份计，将水性氟碳乳液树脂70-75份、松香水2-3份、金属微粒3-5份、异丙醇2-3份、双丙酮丙烯酰胺1-2份、聚有机硅氧烷1-2份、分散剂20-25份和引发剂16-33份加入到去离子水中混合制得单体溶液，然后将三元乙丙3430粉末40-55份加入到所制备的单体溶液中，混合制得悬浮体系；对悬浮体系进行加热、加压，制成胚体，将胚体在500-600℃下保温30-40min制得B胶料；
（3）、A胶料和B胶料的混炼：将上述制得的A胶料与B胶料按重量比为A:B=(2-3):1混合后，加入到开炼机中，进行混炼，薄通3-5遍即可。
上述方案的改进是在A胶料和B胶料混炼时加入10-30重量份的二氧化钛粉末。
本发明的有益效果是胶料无需塑炼，只需较低的温度即可制得，将胶料硫化在软密封阀板的表面和阀孔内表面，所得的衬胶阀板具有良好的弹性、硬度、气密性、耐热性及很好的记忆性等特点，同时材料成本低；混炼时加入二氧化钛可以提高胶料的物理稳定性，进一步延长寿命。
具体实施方式
实施例1：（1）、A胶料的制备：
按重量份计，将甲基丙稀酸羟乙酯10份、三缩四乙二醇双丙稀酸酯15份、过硫酸钠1份、瓜尔胶2份、硅酸铝纤维5份、气相白炭黑10份、聚丙二醇二缩水甘油醚0.4份加入到去离子水中混合制得单体溶液，然后将天然橡胶SVR10粉末40份加入到所制备的单体溶液中，混合制得悬浮体系；对悬浮体系进行加热、加压，制成胚体，将胚体在500℃下保温30min制得A胶料；
（2）、B胶料的制备：
按重量份计，将水性氟碳乳液树脂70份、松香水2份、金属微粒3份、异丙醇2份、双丙酮丙烯酰胺1份、聚有机硅氧烷1份、分散剂20份和引发剂16份加入到去离子水中混合制得单体溶液，然后将三元乙丙3430粉末40份加入到所制备的单体溶液中，混合制得悬浮体系；对悬浮体系进行加热、加压，制成胚体，将胚体在500℃下保温30min制得B胶料；
（3）、A胶料和B胶料的混炼：将上述制得的A胶料与B胶料按重量比为A:B=2:1混合后，加入到开炼机中，进行混炼，薄通3遍即可。
实施例2：（1）、A胶料的制备：
按重量份计，将甲基丙稀酸羟乙酯10-15份、三缩四乙二醇双丙稀酸酯30份、过硫酸钠2份、瓜尔胶3份、硅酸铝纤维10份、气相白炭黑13份、聚丙二醇二缩水甘油醚1份加入到去离子水中混合制得单体溶液，然后将天然橡胶SVR10粉末55份加入到所制备的单体溶液中，混合制得悬浮体系；对悬浮体系进行加热、加压，制成胚体，将胚体在600℃下保温40min制得A胶料；
（2）、B胶料的制备：
按重量份计，将水性氟碳乳液树脂75份、松香水3份、金属微粒5份、异丙醇3份、双丙酮丙烯酰胺2份、聚有机硅氧烷2份、分散剂25份和引发剂33份加入到去离子水中混合制得单体溶液，然后将三元乙丙3430粉末55份加入到所制备的单体溶液中，混合制得悬浮体系；对悬浮体系进行加热、加压，制成胚体，将胚体在600℃下保温40min制得B胶料；
（3）、A胶料和B胶料的混炼：将上述制得的A胶料与B胶料按重量比为A:B=3:1混合后，加入到开炼机中，进行混炼，薄通5遍即可。
本发明的阀板衬胶胶料和普通阀板衬胶胶料物理性能对比如下表：
从上表可看出本发明的衬板胶料的弹性、气密性、耐热性及耐撕裂性都优于普通阀板衬板胶料。
本发明的阀板衬胶胶料加入二氧化钛和不加入二氧化钛物理性能对比如下表：
从上表可看出本发明的添加二氧化钛后衬板胶料的弹性、气密性、耐热性及耐撕裂性都优于未添加二氧化钛的阀板衬板胶料。

Claims (2)

1.软密封闸阀阀板的衬胶胶料的制备方法，其特征是它包括以下步骤：（1）、A胶料的制备：
按重量份计，将甲基丙烯酸羟乙酯10-15份、三缩四乙二醇双丙烯酸酯15-30份、过硫酸钠1-2份、瓜尔胶2-3份、硅酸铝纤维5-10份、气相白炭黑10-13份、聚丙二醇二缩水甘油醚0.4-1份加入到去离子水中混合制得单体溶液，然后将天然橡胶SVR10粉末40-55份加入到所制备的单体溶液中，混合制得悬浮体系；对悬浮体系进行加热、加压，制成胚体，将胚体在500-600℃下保温30-40min制得A胶料；
（2）、B胶料的制备：
按重量份计，将水性氟碳乳液树脂70-75份、松香水2-3份、金属微粒3-5份、异丙醇2-3份、双丙酮丙烯酰胺1-2份、聚有机硅氧烷1-2份、分散剂20-25份和引发剂16-33份加入到去离子水中混合制得单体溶液，然后将三元乙丙3430粉末40-55份加入到所制备的单体溶液中，混合制得悬浮体系；对悬浮体系进行加热、加压，制成胚体，将胚体在500-600℃下保温30-40min制得B胶料；
（3）、A胶料和B胶料的混炼：将上述制得的A胶料与B胶料按重量比为A:B=(2-3):1混合后，加入到开炼机中，进行混炼，薄通3-5遍即可。
2.如权利要求1所述的软密封闸阀阀板的衬胶胶料的制备方法，其特征是在A胶料和B胶料混炼时加入10-30重量份的二氧化钛粉末。
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