CN104558971A - 一种实验台板用耐腐蚀pvc型材及其处理工艺 - Google Patents

一种实验台板用耐腐蚀pvc型材及其处理工艺 Download PDF

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CN104558971A
CN104558971A CN201510067271.3A CN201510067271A CN104558971A CN 104558971 A CN104558971 A CN 104558971A CN 201510067271 A CN201510067271 A CN 201510067271A CN 104558971 A CN104558971 A CN 104558971A
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韩君
王正勇
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Jiangsu Guming Intelligent Technology Co ltd
Suzhou Jinyuan Oil Machinery Co ltd
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Abstract

本发明公开了一种实验台板用耐腐蚀PVC型材,包括PVC基材和耐热改性剂,PVC基材的含量为95.5-96.5%,耐热改性剂的含量为3.5-4.5%,PVC基材各组分按质量份数计为:聚氯乙烯树脂60份,氯化聚氯乙烯树脂31-33份,聚丙烯晴-丁二烯-苯乙烯11-14份,相容剂1-1.5份,热稳定剂2.5-4份,抗冲改性剂2份,填充剂3份,着色剂0.01-0.03份;耐热改性剂各组分按质量份数计为:耐热改性剂中加入正硅酸乙脂与二甲基甲酰胺;发明所设计的实验台板用耐腐蚀PVC型材及其处理工艺大大提高了台板的隔热材料的附着力,有效减少了台板长期使用造成的开裂问题,提高了使用中的抗腐蚀性能。

Description

一种实验台板用耐腐蚀 PVC 型材及其处理工艺
技术领域
本发明属于PVC型材的加工领域,特别是一种实验台板用耐腐蚀PVC型材及其处理工艺。
背景技术
PVC塑料异型材发展至今,已经是一个很成熟的产品,产品种类包括PVC塑料门窗异型材、PVC外墙挂板、PVC合成树脂瓦和PVC护栏等户外制品。PVC塑料具有刚性好、强度高、阻燃、电绝缘性好等优点,但是,因为PVC的耐热性耐腐蚀性能差,不可以在较高温度下使用,在很大程度上影响了PVC异型材的应用。
实验室中不仅有大量的酸性物质,同时,受SO2、CO2、NO2、CI2、H2S及NH3等影响,对台板的腐蚀危害都是不可忽视的,其中SO2影响最大,溶于水中呈酸性,形成酸雨,腐蚀实验设施;在实验过程中,很多实验机器设备是在高温下运行的,因此高温腐蚀值得重视;在各种高温防腐技术中,耐高温涂料具有独特的优越性,因此耐高温涂料在高温防腐领域中应用非常广泛。
发明内容
本发明所要解决的技术问题是,克服现有技术的缺点,提供一种实验台板用耐腐蚀PVC型材及其处理工艺,与现有技术相比,大大提高了台板的隔热材料的附着力,有效减少了台板长期使用造成的开裂问题,在具有高阻热保温性能的同时,提高了使用中的抗腐蚀性能。
为了解决以上技术问题,本发明提供一种实验台板用耐腐蚀PVC型材,包括PVC基材和耐热改性剂,PVC基材的含量为95.5-96.5%,耐热改性剂的含量为3.5-4.5%,其中:
PVC基材各组分按质量份数计为:聚氯乙烯树脂60份,氯化聚氯乙烯树脂31-33份,聚丙烯晴-丁二烯-苯乙烯11-14份,相容剂1-1.5份,热稳定剂2.5-4份,抗冲改性剂2份,填充剂3份,着色剂0.01-0.03份;
耐热改性剂各组分按质量份数计为:正硅酸乙脂28-35份;耐热颜填料35-50份;助剂2-4份;二甲基甲酰胺13-18份;热固性酚醛树脂50份;苯乙烯10-30份;甲基丙烯酸甲酯5份;N-苯基马来酰胺2-5份;引发剂1-2份;
耐热颜填料包括:纳米二氧化硅、阻隔型功能填料及铝粉且纳米二氧化硅、阻隔型功能填料及铝粉的质量比为1.5:1:1;
阻隔型功能填料按质量份数计包括以下组分:
空心玻璃微珠:2-6份, 石墨:10-15份,黑碳化硅:20-35份,细晶氧化铝:25-30份,二硫化钼:5-10份,氧化锌:1-5份,滑石粉:3-6份;
助剂为按质量份数计包括以下组分:
分散剂:10-15份,润湿剂:2-6份,固化剂20-50份,消光剂:2-6份,成膜助剂:5-10份,增稠剂:5-10份,羟乙基纤维素:5-10份,pH调节剂:1-5份,辅料:1-3份;消泡剂:2-4份;助剂中还包括硅烷偶联剂,其质量与正硅酸乙脂的质量比为1:15;
其中,分散剂为三聚磷酸钠、四聚磷酸钠或六偏磷酸钠中的一种;成膜助剂为乙二醇乙醚、乙二醇丁醚、乙二醇或丙二醇中的一种;消泡剂为有机硅、聚醚、有机硅氧烷或酰胺中的一种或几种;
辅料为复合稀土,的复合稀土按重量百分比包含以下成分:La:30-32%,Y: 14-15%,Sc:16-18%,Gd:10-11%,Sm:18-20%,Pr:9-11%,以上各组分之和为100%。
本发明的有益效果是:本发明基材中使用氯化氯乙烯,并且采用热固性酚醛树脂合成的耐热改性剂,成型性能好,气孔率低,并且耐热性好,耐酸性强;耐热改性剂的性能好,用量少,同时,合成材料都是常用的材料,容易取得,成本低;
上述技术方案中,由于利用正硅酸乙酯制备耐高温涂料,该涂料在热固化后呈无机膜,随着温度的升高,固化膜的附着力和硬度显著提高,附着力达1级,铅笔硬度大于6H,使涂料能耐更高的温度,同时,二甲基甲酰胺与偶联剂的使用均能减少涂膜开裂倾向;
正硅酸乙酯能够大大降低涂层开裂倾向;在正硅酸乙酯中加入二甲基甲酰胺后,一方面,溶胶在向凝胶转变过程中,二甲基甲酰胺通过氢键与水解中间体结合,抑制了水解中间体Si(OC2H5)4-x(OH)x和产物SixOy(OH)z的化学活性,降低溶胶水解、缩聚的反应速率,促进了粒子之间的这种相互交联,形成有序的网络结构,改善了凝胶结构,同时又使凝胶质点增大,介孔孔径和孔体积增大,导致干燥后凝胶收缩量变小,获得孔径大小分布均匀的凝胶,从而溶剂蒸发时,凝胶内部应力均匀;
阻隔型功能填料中采用二硫化钼、石墨、滑石粉,石墨材料由于特有的晶体结构使其易产生滑移,同时石墨干摩擦润滑剂具有吸附性,可以形成一层润滑膜(石墨晶体膜),起到减少摩擦磨损的作用,具有良好的散热性和导热性,由于碳的熔点很高,故不会产生碳和金属材料的咬焊现象;滑石粉作为填料,可起到骨架作用,降低制造成本同时提高涂料的漆膜硬度,增加产品形状的稳定,增加张力强度,剪切强度,绕曲强度,压力强度,降低变形,伸张率,热膨胀系数,白度高、粒度均匀分散性强等特点,使涂料的延展性以及可加工性等优良得到优化;
将石墨与二硫化钼混合在一起使用,石墨与二硫化钼具有良好的协同效应,两者以一定的比例混合使用能有效地提高涂料的耐磨性能,减小磨损失重及摩擦系数,同时在涂料中加入一定量的三氧化二锑,可有效增强涂料涂层的硬度,并提高涂层的耐磨性;
空心玻璃微珠是一种优良的抗化学药品和抗老化性的无机材料,,厚度一般为2-5μm,片晶长度为100-300μm;空心玻璃微珠能把涂料分割成许多小空间,使涂料中的微裂纹、微气泡相互分割,同时抑制了毛细管作用的渗透,这大大地提高了涂料的附着力和抗冲击性能,抑制了涂料龟裂、剥落等缺陷。
本发明进一步限定的技术方案是:
进一步的,前述的实验台板用耐腐蚀PVC型材,聚氯乙烯树脂为SG-5型树脂。
前述的实验台板用耐腐蚀PVC型材,氯化聚氯乙烯树脂的含氯量为60%。
本发明还设计了一种实验台板用耐腐蚀PVC型材的处理工艺,包括如下具体步骤:
A:将耐热改性剂与水按照质量比1:2.5进行调配,搅拌20min,搅拌速度为135-140 r/min;
B:用砂纸细微打磨PVC基材表面后,利用步骤A中的混合物对其进行第一次涂覆,当其基层表面含水率小于等于8%时,进行第二次涂覆,即完成隔热耐腐蚀型货架挡板用PVC型材的处理。
前述的实验台板用耐腐蚀PVC型材的处理工艺,其特征在于,涂覆时,涂覆工具与PVC基材保持25-30度倾斜度,用力均匀。
前述的实验台板用耐腐蚀PVC型材的处理工艺,其特征在于,两次涂覆工艺中的涂覆厚度为0.4-0.6mm。
具体实施方式
实施例 1
本实施例提供的一种实验台板用耐腐蚀PVC型材,包括PVC基材和耐热改性剂,PVC基材的含量为95.5-96.5%,耐热改性剂的含量为3.5-4.5%,其中:
PVC基材各组分按质量份数计为:聚氯乙烯树脂60份,氯化聚氯乙烯树脂31份,聚丙烯晴-丁二烯-苯乙烯12份,相容剂1份,热稳定剂2.5份,抗冲改性剂2份,填充剂3份,着色剂0.03份;
耐热改性剂各组分按质量份数计为:正硅酸乙脂29份;耐热颜填料42份;助剂2份;二甲基甲酰胺15份;热固性酚醛树脂50份;苯乙烯18份;甲基丙烯酸甲酯5份;N-苯基马来酰胺3份;引发剂1份;
耐热颜填料包括:纳米二氧化硅、阻隔型功能填料及铝粉且纳米二氧化硅、阻隔型功能填料及铝粉的质量比为1.5:1:1;
阻隔型功能填料按质量份数计包括以下组分:
空心玻璃微珠:4份, 石墨:12份,黑碳化硅:28份,细晶氧化铝:28份,二硫化钼:7份,氧化锌:3份,滑石粉:4份;
助剂为按质量份数计包括以下组分:
分散剂:12份,润湿剂:2份,固化剂28份,消光剂:4份,成膜助剂:6份,增稠剂:8份,羟乙基纤维素:6份,pH调节剂:3份,辅料:1份;消泡剂:2份;助剂中还包括硅烷偶联剂,其质量与正硅酸乙脂的质量比为1:15;
其中,分散剂为三聚磷酸钠、四聚磷酸钠或六偏磷酸钠中的一种;成膜助剂为乙二醇乙醚、乙二醇丁醚、乙二醇或丙二醇中的一种;消泡剂为有机硅、聚醚、有机硅氧烷或酰胺中的一种或几种;
辅料为复合稀土,的复合稀土按重量百分比包含以下成分:La:30-32%,Y: 14-15%,Sc:16-18%,Gd:10-11%,Sm:18-20%,Pr:9-11%,以上各组分之和为100%;
聚氯乙烯树脂为SG-5型树脂;
氯化聚氯乙烯树脂的含氯量为60%;
本发明还设计了一种实验台板用耐腐蚀PVC型材的处理工艺,包括如下具体步骤:
A:将耐热改性剂与水按照质量比1:2.5进行调配,搅拌20min,搅拌速度为136 r/min;
B:用砂纸细微打磨PVC基材表面后,利用步骤A中的混合物对其进行第一次涂覆,当其基层表面含水率小于等于8%时,进行第二次涂覆,即完成隔热耐腐蚀型货架挡板用PVC型材的处理;
涂覆时,涂覆工具与PVC基材保持26度倾斜度,用力均匀;
两次涂覆工艺中的涂覆厚度为0.4mm。
实施例 2
本实施例提供的一种实验台板用耐腐蚀PVC型材,包括PVC基材和耐热改性剂,PVC基材的含量为95.5-96.5%,耐热改性剂的含量为3.5-4.5%,其中:
PVC基材各组分按质量份数计为:聚氯乙烯树脂60份,氯化聚氯乙烯树脂32份,聚丙烯晴-丁二烯-苯乙烯12份,相容剂1.5份,热稳定剂4份,抗冲改性剂2份,填充剂3份,着色剂0.02份;
耐热改性剂各组分按质量份数计为:正硅酸乙脂32份;耐热颜填料36份;助剂3份;二甲基甲酰胺16份;热固性酚醛树脂50份;苯乙烯26份;甲基丙烯酸甲酯5份;N-苯基马来酰胺3份;引发剂2份;
耐热颜填料包括:纳米二氧化硅、阻隔型功能填料及铝粉且纳米二氧化硅、阻隔型功能填料及铝粉的质量比为1.5:1:1;
阻隔型功能填料按质量份数计包括以下组分:
空心玻璃微珠:5份, 石墨:11份,黑碳化硅:26份,细晶氧化铝:28份,二硫化钼:8份,氧化锌:3份,滑石粉:4份;
助剂为按质量份数计包括以下组分:
分散剂:11份,润湿剂:5份,固化剂36份,消光剂:5份,成膜助剂:9份,增稠剂:8份,羟乙基纤维素:8份,pH调节剂:4份,辅料:3份;消泡剂:3份;助剂中还包括硅烷偶联剂,其质量与正硅酸乙脂的质量比为1:15;
其中,分散剂为三聚磷酸钠、四聚磷酸钠或六偏磷酸钠中的一种;成膜助剂为乙二醇乙醚、乙二醇丁醚、乙二醇或丙二醇中的一种;消泡剂为有机硅、聚醚、有机硅氧烷或酰胺中的一种或几种;
辅料为复合稀土,的复合稀土按重量百分比包含以下成分:La:30-32%,Y: 14-15%,Sc:16-18%,Gd:10-11%,Sm:18-20%,Pr:9-11%,以上各组分之和为100%;
聚氯乙烯树脂为SG-5型树脂;
氯化聚氯乙烯树脂的含氯量为60%;
本发明还设计了一种实验台板用耐腐蚀PVC型材的处理工艺,包括如下具体步骤:
A:将耐热改性剂与水按照质量比1:2.5进行调配,搅拌20min,搅拌速度为138 r/min;
B:用砂纸细微打磨PVC基材表面后,利用步骤A中的混合物对其进行第一次涂覆,当其基层表面含水率小于等于8%时,进行第二次涂覆,即完成隔热耐腐蚀型货架挡板用PVC型材的处理。
涂覆时,涂覆工具与PVC基材保持28度倾斜度,用力均匀;
两次涂覆工艺中的涂覆厚度为0.5mm。
以上实施例仅为说明本发明的技术思想,不能以此限定本发明的保护范围,凡是按照本发明提出的技术思想,在技术方案基础上所做的任何改动,均落入本发明保护范围之内。

Claims (6)

1.一种实验台板用耐腐蚀PVC型材,其特征在于,包括PVC基材和耐热改性剂,所述PVC基材的含量为95.5-96.5%,所述耐热改性剂的含量为3.5-4.5%,其中:
所述PVC基材各组分按质量份数计为:聚氯乙烯树脂60份,氯化聚氯乙烯树脂31-33份,聚丙烯晴-丁二烯-苯乙烯11-14份,相容剂1-1.5份,热稳定剂2.5-4份,抗冲改性剂2份,填充剂3份,着色剂0.01-0.03份;
所述耐热改性剂各组分按质量份数计为:正硅酸乙脂28-35份;耐热颜填料35-50份;助剂2-4份;二甲基甲酰胺13-18份;热固性酚醛树脂50份;苯乙烯10-30份;甲基丙烯酸甲酯5份;N-苯基马来酰胺2-5份;引发剂1-2份;
所述耐热颜填料包括:纳米二氧化硅、阻隔型功能填料及铝粉且所述纳米二氧化硅、阻隔型功能填料及铝粉的质量比为1.5:1:1;
所述阻隔型功能填料按质量份数计包括以下组分:
空心玻璃微珠:2-6份, 石墨:10-15份,黑碳化硅:20-35份,细晶氧化铝:25-30份,二硫化钼:5-10份,氧化锌:1-5份,滑石粉:3-6份;
所述助剂为按质量份数计包括以下组分:
分散剂:10-15份,润湿剂:2-6份,固化剂20-50份,消光剂:2-6份,成膜助剂:5-10份,增稠剂:5-10份,羟乙基纤维素:5-10份,pH调节剂:1-5份,辅料:1-3份;消泡剂:2-4份;助剂中还包括硅烷偶联剂,其质量与正硅酸乙脂的质量比为1:15;
其中,所述分散剂为三聚磷酸钠、四聚磷酸钠或六偏磷酸钠中的一种;所述成膜助剂为乙二醇乙醚、乙二醇丁醚、乙二醇或丙二醇中的一种;所述消泡剂为有机硅、聚醚、有机硅氧烷或酰胺中的一种或几种;
所述辅料为复合稀土,所述的复合稀土按重量百分比包含以下成分:La:30-32%,Y: 14-15%,Sc:16-18%,Gd:10-11%,Sm:18-20%,Pr:9-11%,以上各组分之和为100%。
2.根据权利要求1所述的实验台板用耐腐蚀PVC型材,其特征在于,所述聚氯乙烯树脂为SG-5型树脂。
3.根据权利要求1所述的实验台板用耐腐蚀PVC型材,其特征在于,所述氯化聚氯乙烯树脂的含氯量为60%。
4.根据权利要求1至3中任意一项权利要求所述的实验台板用耐腐蚀PVC型材的处理工艺,其特征在于,包括如下具体步骤:
A:将耐热改性剂与水按照质量比1:2.5进行调配,搅拌20min,搅拌速度为135-140 r/min;
B:用砂纸细微打磨PVC基材表面后,利用步骤A中的混合物对其进行第一次涂覆,当其基层表面含水率小于等于8%时,进行第二次涂覆,即完成隔热耐腐蚀型货架挡板用PVC型材的处理。
5.根据权利要求4所述的实验台板用耐腐蚀PVC型材的处理工艺,其特征在于,涂覆时,涂覆工具与PVC基材保持25-30度倾斜度,用力均匀。
6.根据权利要求4所述的实验台板用耐腐蚀PVC型材的处理工艺,其特征在于,两次涂覆工艺中的涂覆厚度为0.4-0.6mm。
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