CN114940878A - 一种高强度防火夹层玻璃的中间膜及其制备方法 - Google Patents
一种高强度防火夹层玻璃的中间膜及其制备方法 Download PDFInfo
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- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 2
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- 229920001971 elastomer Polymers 0.000 claims description 2
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 2
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 2
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- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 claims 1
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- C09J123/02—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers not modified by chemical after-treatment
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- C09J123/0846—Copolymers of ethene with unsaturated hydrocarbons containing other atoms than carbon or hydrogen atoms
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Abstract
本发明涉及一种高强度防火夹层玻璃的中间膜及其制备方法。A:首先利用增强树脂对EVA树脂进行改性,此过程中添加增容剂以提高两者的相容性,按一定比例混合EVA树脂、增强树脂、纳米填料及增容剂于双螺杆挤出机剪切造粒,获得改性EVA树脂;B:其次将A所得改性EVA树脂与不同比例添加剂在搅拌机中实现均匀共混;C:将B所得的共混物投入至单螺杆挤出机进行混炼,挤出机温度控制在90~150℃。D:经流延、压花、冷却、牵引、裁切及收卷等工艺获得高强度、防火EVA夹层玻璃中间膜。本发明的EVA中间膜拉伸强度高、耐老化性能强且具有防火功效;本发明的制备方法工艺简单,生产效率高。
Description
技术领域
本发明涉及一种中间膜,尤其涉及一种高强度防火夹层玻璃的中间膜及其制备方法,用于夹层玻璃。
背景技术
夹层玻璃中间膜仍然以PVB为主。然而,PVB本身的粘度较大,加工性能不佳,加工过程中需加入大量增塑剂;用PVB中间膜制备夹层玻璃时,合片加工需要采用高压釜在高温高压的条件下完成,需要高额的设备投资:制备结构为PVB胶膜/功能膜/PVB胶膜的复合型中间膜时,如功能膜的基材为PET或PC等,则在合片封装时,会发生PVB的粘合力、增塑剂转移以及高温高压引起的功能膜变形,从而导致一系列的质量问题。乙烯-醋酸乙烯酯共聚物(EVA)具有一些可与PVB相媲美的性能。EVA具有优异的热熔胶性能、良好的加工性且价格相对较低;用EVA胶膜做夹层玻璃中间膜时,合片温度低,封装工艺和设备简单,无需高压釜。
发明内容
本发明主要是解决现有技术中存在的不足,提供一种高强度防火的夹层玻璃用EVA中间膜及其制备方法,该中间膜具有较高的拉伸强度和粘结性,阻隔对人体有害的紫外线以及优异的阻燃性,在应用过程中具备较高的安全性。
本发明的上述技术问题主要是通过下述技术方案得以解决的:
一种高强度防火夹层玻璃的中间膜,包括以下重量份数配比的原料:
90~100份EVA树脂、5~30份增强树脂、1~5份增容剂、1~5份无机纳米填料、0.1~3份偶联剂、0.1~5份交联剂、0.1~2份抗氧剂和0.1~3份紫外吸收剂。
作为优选,所述的增强树脂包括聚乙烯、聚丙烯、聚丁烯、乙丙橡胶或丁基橡胶中的一种或几种的任意混合。
作为优选,所述的增容剂为5%~8%马来酸酐接枝的聚乙烯(PE-g-MA)或聚丙烯(PP-g-MA)。
作为优选,所述的无机纳米填料为羟基锡酸盐、硼酸盐、多壁碳纳米管、层状氢氧化物、二氧化硅蒙脱石中的一种或多种混合。
作为优选,所述的偶联剂为乙烯基三乙氧基硅烷、乙烯基三甲氧基硅烷、甲基丙烯酸酯硅烷、酞酸酯偶联剂中的一种或多种任意混合。
作为优选,所述的交联剂为过氧化二异丙苯、二酰基有机过氧化物、2,5-二甲基-2,5双(叔丁基过氧)己烷、过氧化叔丁基异丙苯、过氧化苯甲酸叔戊酯中的一种或多种混合。
作为优选,所述的抗氧剂为二硬脂酸季戊四醇二亚磷酸酯、2,6-二叔丁基-4-甲基苯酚、三(2,4-二叔丁基苯基)亚磷酸酯中的一种或多种混合。
作为优选,所述的紫外吸收剂为水杨酸、2-羟基-4-正辛氧基二苯甲酮、2-羟基-4-甲氧基二苯甲酮、2-羟基-4-丙烯酰氧基乙氧基二苯甲酮、2-(2-羟基-5-甲基苯基)苯并三唑中的一种或多种混合。
作为优选,所述的EVA树脂的熔融指数为1-30g/10min,熔点为50-100℃,透光率≥90%。
一种高强度防火夹层玻璃中间膜的制备方法,按以下步骤进行:
A:首先利用增强树脂对EVA树脂进行改性,此过程中添加增容剂以提高两者的相容性,按一定比例混合EVA树脂、增强树脂、纳米填料及增容剂于双螺杆挤出机剪切造粒,获得改性EVA树脂;
B:其次将A所得改性EVA树脂与不同比例添加剂在搅拌机中实现均匀共混;
C:将B所得的共混物投入至单螺杆挤出机进行混炼,挤出机温度控制在90~150℃;
D:经流延、压花、冷却、牵引、裁切及收卷相关工艺获得高强度、防火EVA夹层玻璃中间膜。
所述的高强度、防火夹层玻璃中间膜的主要成分是EVA树脂、增强树脂、增容剂、无极纳米填料,同时还包含有偶联剂、交联剂、抗氧剂和紫外吸收剂等助剂。
将EVA树脂、增强树脂、无机纳米填料和增容剂按一定比例混合均匀造粒后,与偶联剂、交联剂、抗氧剂、紫外吸收剂等助剂均匀共混,经挤出机混炼后,通过T型模头挤出流延成膜,即为本发明的夹层玻璃EVA中间膜。
所述的高强度、防火夹层玻璃中间膜的厚度为0.3-0.8mm。
所述的高强度、防火夹层玻璃中间膜的透光率≥90%。
所述的高强度、防火夹层玻璃中间膜的拉伸强度≥25MPa。
所述的高强度、防火夹层玻璃中间膜的雾度≤1.5%。
所述的高强度、防火夹层玻璃中间膜的紫外线透过率≤10%。
本发明与现有技术相比,具有以下优点和效果:
通过将EVA树脂与增强树脂共混,提升了成膜后的拉伸强度,普通EVA胶膜的拉伸强度为20MPa左右,通过制备高强度EVA中间膜的拉伸强度≥25MPa;添加无机纳米填料,实现了中间膜的阻燃性,达到防火目的;添加增容剂,以提高基体树脂与增强树脂之间的相容性;再与偶联剂、交联剂、抗氧剂和紫外吸收剂等助剂以合适比例和工艺制备出高强度、防火夹层玻璃中间膜。
具体实施方式
下面通过实施例,对本发明的技术方案作进一步具体的说明。
实施例1:一种高强度防火夹层玻璃中间膜,由以下重量份的原料制成:
一种高强度防火夹层玻璃中间膜的制备方法,其步骤是:
A:首先利用增强树脂对EVA树脂进行改性,此过程中添加增容剂以提高两者的相容性,按上述重量份比例混合EVA树脂、增强树脂、纳米填料及增容剂于双螺杆挤出机剪切造粒,获得改性EVA树脂;
B:其次将A所得改性EVA树脂与上述比例助剂在搅拌机中实现均匀共混;
C:将B所得的共混物投入至单螺杆挤出机进行混炼,挤出机温度控制在90℃;
D:经流延、压花、冷却、牵引、裁切及收卷等工艺获得高强度、防火EVA夹层玻璃中间膜。
实施例2:一种高强度防火夹层玻璃中间膜,由以下重量份的原料制成:
一种高强度防火夹层玻璃中间膜的制备方法,其步骤是:
A:首先利用增强树脂对EVA树脂进行改性,此过程中添加增容剂以提高两者的相容性,按上述重量份比例混合EVA树脂、增强树脂、纳米填料及增容剂于双螺杆挤出机剪切造粒,获得改性EVA树脂;
B:其次将A所得改性EVA树脂与上述比例助剂在搅拌机中实现均匀共混;
C:将B所得的共混物投入至单螺杆挤出机进行混炼,挤出机温度控制在100℃;
D:经流延、压花、冷却、牵引、裁切及收卷等工艺获得高强度、防火EVA夹层玻璃中间膜。
实施例3:一种高强度防火夹层玻璃中间膜,由以下重量份的原料制成:
一种高强度防火夹层玻璃中间膜的制备方法,其步骤是:
A:首先利用增强树脂对EVA树脂进行改性,此过程中添加增容剂以提高两者的相容性,按上述重量份比例混合EVA树脂、增强树脂、纳米填料及增容剂于双螺杆挤出机剪切造粒,获得改性EVA树脂;
B:其次将A所得改性EVA树脂与上述比例助剂在搅拌机中实现均匀共混;
C:将B所得的共混物投入至单螺杆挤出机进行混炼,挤出机温度控制在150℃;
D:经流延、压花、冷却、牵引、裁切及收卷等工艺获得高强度、防火EVA夹层玻璃中间膜。
Claims (10)
1.一种高强度防火夹层玻璃的中间膜,其特征在于包括以下重量份数配比的原料:
90~100份EVA树脂、5~30份增强树脂、1~5份增容剂、1~5份无机纳米填料、0.1~3份偶联剂、0.1~5份交联剂、0.1~2份抗氧剂和0.1~3份紫外吸收剂。
2.根据权利要求1所述的一种高强度防火夹层玻璃的中间膜,其特征在于:所述的增强树脂包括聚乙烯、聚丙烯、聚丁烯、乙丙橡胶或丁基橡胶中的一种或几种的任意混合。
3.根据权利要求1所述的一种高强度防火夹层玻璃的中间膜,其特征在于:所述的增容剂为5%~8%马来酸酐接枝的聚乙烯(PE-g-MA)或聚丙烯(PP-g-MA)。
4.根据权利要求1所述的一种高强度防火夹层玻璃的中间膜,其特征在于:所述的无机纳米填料为羟基锡酸盐、硼酸盐、多壁碳纳米管、层状氢氧化物、二氧化硅蒙脱石中的一种或多种混合。
5.根据权利要求1所述的一种高强度防火夹层玻璃的中间膜,其特征在于:所述的偶联剂为乙烯基三乙氧基硅烷、乙烯基三甲氧基硅烷、甲基丙烯酸酯硅烷、酞酸酯偶联剂中的一种或多种任意混合。
6.根据权利要求1所述的一种高强度防火夹层玻璃的中间膜,其特征在于:所述的交联剂为过氧化二异丙苯、二酰基有机过氧化物、2,5-二甲基-2,5双(叔丁基过氧)己烷、过氧化叔丁基异丙苯、过氧化苯甲酸叔戊酯中的一种或多种混合。
7.根据权利要求1所述的一种高强度防火夹层玻璃的中间膜,其特征在于:所述的抗氧剂为二硬脂酸季戊四醇二亚磷酸酯、2,6-二叔丁基-4-甲基苯酚、三(2,4-二叔丁基苯基)亚磷酸酯中的一种或多种混合。
8.根据权利要求1所述的一种高强度防火夹层玻璃的中间膜,其特征在于:所述的紫外吸收剂为水杨酸、2-羟基-4-正辛氧基二苯甲酮、2-羟基-4-甲氧基二苯甲酮、2-羟基-4-丙烯酰氧基乙氧基二苯甲酮、2-(2-羟基-5-甲基苯基)苯并三唑中的一种或多种混合。
9.根据权利要求1所述的一种高强度防火夹层玻璃的中间膜,其特征在于:所述的EVA树脂的熔融指数为1-30g/10min,熔点为50-100℃,透光率≥90%。
10.根据权利要求1所述的一种高强度防火夹层玻璃中间膜的制备方法,其特征在于按以下步骤进行:
A:首先利用增强树脂对EVA树脂进行改性,此过程中添加增容剂以提高两者的相容性,按一定比例混合EVA树脂、增强树脂、纳米填料及增容剂于双螺杆挤出机剪切造粒,获得改性EVA树脂;
B:其次将A所得改性EVA树脂与不同比例添加剂在搅拌机中实现均匀共混;
C:将B所得的共混物投入至单螺杆挤出机进行混炼,挤出机温度控制在90~150℃;
D:经流延、压花、冷却、牵引、裁切及收卷相关工艺获得高强度、防火EVA夹层玻璃中间膜。
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