CN112321979A - 一种高耐候隔热透明膜及其制作方法 - Google Patents
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Abstract
本发明涉及一种高耐候隔热透明膜及其制作方法,由以下组分按照重量份数制成:苯乙烯‑丙烯腈(SAN)预聚物20~70份,丙烯腈‑苯乙烯‑丙烯酸酯共聚物(ASA)高胶粉10~70份,丙烯酸酯类增韧剂(MA)10~70份,抗氧化剂1~5份,分散助剂1~5份,硅酮粉1~5份,相容剂1~5份,紫外光吸收剂0.5~5份,红外反射助剂0.5~5份;本发明既有较好的力学性能、耐化学品性、耐候性、又改善了透明性,且能有效反射紫外线红外线,达到节能保温的效果且美观,耐久的用途。
Description
技术领域
本发明涉及建材装饰防护用保护材料领域,具体涉及一种高耐候隔热透明膜及其制作方法。
背景技术
随着建材行业的发展和国家节能减排的推广,门窗、地板、屋面瓦的塑料化,彩色化是必然的一种趋势,替代金属、天然石材和实木的趋势也是确定的;
PVC装饰膜主要用于塑料制建材的表面装饰作用,但PVC装饰膜极易发生褪色和粉化,因此需要一种高耐候膜,赋予PVC装饰膜一层保护层,既有较好的力学性能、耐化学品性和耐候性,又能有效阻隔紫外线,并在户外外墙挂板及屋顶瓦片使用时有效反射红外线,节能保温,又改善了常规材料不透明造成颜色单调问题,目前该领域市场上没有类似的产品出现。
发明内容
本发明的目的是:提供一种高耐候隔热透明膜及其制作方法,既有较好的力学性能、耐化学品性、耐候性、又改善了透明性,且能有效反射紫外线红外线,达到节能保温的效果且美观,耐久的用途。
为了实现上述目的,本发明提供如下的技术方案:
一种高耐候隔热透明膜,由以下组分按照重量份数制成:苯乙烯-丙烯腈(SAN)预聚物20~70份,丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)高胶粉10~70份,丙烯酸酯类增韧剂(MA)10~70份,抗氧化剂1~5份,分散助剂1~5份,硅酮粉1~5份,相容剂1~5份,紫外光吸收剂0.5~5份,红外反射助剂0.5~5份;
其中,所述苯乙烯-丙烯腈(SAN)预聚物和丙烯酸酯类增韧剂(MA)折光率差值≤3%;所述丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)为高橡胶含量粉末,其中苯乙烯(SM)含量≥25%,丙烯酸酯(MA)含量≥30%。
进一步的,所述的抗氧化剂为亚磷酸酯和受阻酚按重量比3:2混合的共混物。
进一步的,所述的分散助剂为氧化聚乙烯蜡和季戊四醇酯按重量比3:2混合的共混物。
进一步的,所述的相容剂为马来酸酐接枝苯乙烯。本发明相容剂首选马来酸酐-苯乙烯共聚物SMA。
进一步的,所述的紫外光吸收剂为苯并三唑和受阻胺复配,重量比例为4:3的混合物。
进一步的,所述的红外反射助剂为三氧化二铟、二氧化锡及硅酸钾表面处理的氧化锆陶瓷微珠,重量比为80:8:12,微珠的尺寸选择在0.5μm~0.8μm。
一种高耐候隔热透明膜的制作方法,
A)准备材料:各种混合物按比例调配,并控制水分≤0.05%;
B)制造原料颗粒:将苯乙烯-丙烯腈(SAN)预聚物、丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)高胶粉、丙烯酸酯类增韧剂(MA)、相容剂、分散助剂、硅酮粉、红外反射助剂按比例混合后,放入高速混料机中搅拌10-50分钟;接着将抗氧剂、紫外光吸收剂比例加入上述混合物中,继续搅拌10-15分钟后,将该混合物放入螺杆主喂料的釜中;设置120-255℃的挤出温度,待温度稳定30分钟后,开启主螺杆和喂料马达,设备抽真空,真空度≥0.06,水温控制60~70℃,挤出造粒,得到原料颗粒;
C)制作高耐候隔热透明膜:将原料颗粒在烘料桶中85℃烘烤3个小时,水分控制≤0.1%,接着投入到压延线平行双螺杆储料桶中,螺杆温度设置140-230℃,熔体泵设置220℃,模具温度设置205-215℃,温度稳定1小时后,依次开主螺杆,喂料螺杆,熔体泵,压延辊,牵引辊,模具出料后开罗茨泵,开始收卷后,开测厚仪,按照要求收卷得到高耐候隔热透明膜。
本发明的有益效果为:本发明所述的一种高耐候隔热透明膜,既有较好的力学性能、耐化学品性、耐候性、又改善了常规材料不透明造成颜色单调、着色成本高、高浓度颜色无法达到等缺陷;又能有效反射红外线,达到节能保温的效果,可以大大拓展市场的应用范围,比如有效防护PVC装饰膜、外墙挂板、屋顶瓦片等,达到节能保温且美观,耐久的用途。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合实施例,对本发明作进一步的详细说明。应当理解,此处所描述的具体实施例仅用以解释本发明,并不用于限定本发明。
实施例1:
材料准备:其组成成分的重量配比为:苯乙烯-丙烯腈(SAN)预聚物35份,丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)高胶粉10份,丙烯酸酯类增韧剂(MA)55份,抗氧化剂1份,分散助剂3份,硅酮粉1份,相容剂5份,紫外光吸收剂1份,红外反射助剂2份。
挤出成型:准备材料:各种混合物按比例调配,并控制水分≤0.05%
B)将苯乙烯-丙烯腈(SAN)预聚物、丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)高胶粉、丙烯酸酯类增韧剂(MA)、相容剂、分散助剂、硅酮粉、红外反射助剂按比例混合后,放入高速混料机中搅拌10-50分钟;
将抗氧剂、紫外光吸收剂比例加入上述混合物中,继续搅拌10-15分钟后,将该混合物放入螺杆主喂料的釜中;
设置120、160、200、220、235、255、255、255、245的挤出温度,待温度稳定30分钟后,开启主螺杆和喂料马达,设备抽真空,真空度≥0.06,水温控制60~70℃,挤出造粒。
C)制作高耐候隔热透明膜:将原料颗粒在烘料桶中85℃烘烤3个小时,水分控制≤0.1%,投入到压延线平行双螺杆储料桶中,螺杆温度设置140 160 180 200 220 230 230230 230 230,熔体泵设置220℃,模具温度设置215 210 205 205 205 205 205 210 215,温度稳定1小时后,依次开主螺杆,喂料螺杆,熔体泵,压延辊,牵引辊,模具出料后开罗茨泵,开始收卷后开测厚仪,按照要求收卷得到高耐候隔热透明膜。
测试结果:本实施列生产出来的高耐候隔热透明膜的透光率为67%,透光性能较佳,红外辐射透过率为30%,具备隔热效果,采用丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)高胶粉,经测试同样具备较好的力学性能、耐化学品性和耐候性。
实施例2:
A)材料准备:其组成成分的重量配比为:苯乙烯-丙烯腈(SAN)预聚物50份,丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)高胶粉15份,丙烯酸酯类增韧剂(MA)35份,抗氧化剂1份,分散助剂3份,硅酮粉1份,相容剂3份,紫外光吸收剂1份,红外反射助剂5份。
挤出成型:准备材料:各种混合物按比例调配,并控制水分≤0.05%
B)挤出成型:将SAN、ASA高胶粉、MA增韧剂、相容剂、分散助剂、硅酮粉、红外反射助剂按比例混合后,放入高速混料机中搅拌10-50分钟;
将抗氧剂、紫外光吸收剂比例加入上述混合物中,继续搅拌10-15分钟后,将该混合物放入螺杆主喂料的釜中;
设置120、160、200、220、235、255、255、255、245的挤出温度,待温度稳定30分钟后,开启主螺杆和喂料马达,设备抽真空,真空度≥0.06,水温控制60~70℃,挤出造粒。
C)制作高耐候隔热透明膜:将原料颗粒在烘料桶中85℃烘烤3个小时,水分控制≤0.1%,投入到压延线平行双螺杆储料桶中,螺杆温度设置140 160 180 200 220 230 230230 230 230,熔体泵设置220℃,模具温度设置215 210 205 205 205 205 205 210 215,温度稳定1小时后,依次开主螺杆,喂料螺杆,熔体泵,压延辊,牵引辊,模具出料后开罗茨泵,开始收卷后开测厚仪,按照要求收卷得到高耐候隔热透明膜。
测试结果:本实施列生产出来的高耐候隔热透明膜的透光率为70%,透光性能较佳,红外辐射透过率为26%,具备隔热效果,采用丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)高胶粉,经测试同样具备较好的力学性能、耐化学品性和耐候性。
在本发明中,除非另有明确的规定和限定,术语“相连”、“连接”、“固定”等术语应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或成一体;可以是机械连接,也可以是电连接;可以是直接相连,也可以通过中间媒介间接相连,可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言,可以根据具体情况理解上述术语在本发明中的具体含义。
上述实施例用于对本发明作进一步的说明,但并不将本发明局限于这些具体实施方式。凡在本发明的精神和原则之内所作的任何修改、等同替换和改进等,均应理解为在本发明的保护范围之内。
Claims (7)
1.一种高耐候隔热透明膜,其特征在于:由以下组分按照重量份数制成:苯乙烯-丙烯腈(SAN)预聚物20~70份,丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)高胶粉10~70份,丙烯酸酯类增韧剂(MA)10~70份,抗氧化剂1~5份,分散助剂1~5份,硅酮粉1~5份,相容剂1~5份,紫外光吸收剂0.5~5份,红外反射助剂0.5~5份;
其中,所述苯乙烯-丙烯腈(SAN)预聚物和丙烯酸酯类增韧剂(MA)折光率差值≤3%;所述丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)为高橡胶含量粉末,其中苯乙烯(SM)含量≥25%,丙烯酸酯(MA)含量≥30%。
2.根据权利要求1所述的一种高耐候隔热透明膜,其特征在于:所述的抗氧化剂为亚磷酸酯和受阻酚按重量比3:2混合的共混物。
3.根据权利要求1所述的一种高耐候隔热透明膜,其特征在于:所述的分散助剂为氧化聚乙烯蜡和季戊四醇酯按重量比3:2混合的共混物。
4.根据权利要求1所述的一种高耐候隔热透明膜,其特征在于:所述的相容剂为马来酸酐接枝苯乙烯。
5.根据权利要求1所述的一种高耐候隔热透明膜,其特征在于:所述的紫外光吸收剂为苯并三唑和受阻胺复配,重量比例为4:3的混合物。
6.根据权利要求1至5任意一项所述的一种高耐候隔热透明膜,其特征在于:所述的红外反射助剂为三氧化二铟、二氧化锡及硅酸钾表面处理的氧化锆陶瓷微珠,重量比为80:8:12,微珠的尺寸选择在0.5μm~0.8μm。
7.一种高耐候隔热透明膜的制作方法,其特征在于:
A)准备材料:各种混合物按比例调配,并控制水分≤0.05%;
B)制造原料颗粒:将苯乙烯-丙烯腈(SAN)预聚物、丙烯腈-苯乙烯-丙烯酸酯共聚物(ASA)高胶粉、丙烯酸酯类增韧剂(MA)、相容剂、分散助剂、硅酮粉、红外反射助剂按比例混合后,放入高速混料机中搅拌10-50分钟;接着将抗氧剂、紫外光吸收剂比例加入上述混合物中,继续搅拌10-15分钟后,将该混合物放入螺杆主喂料的釜中;设置120-255℃的挤出温度,待温度稳定30分钟后,开启主螺杆和喂料马达,设备抽真空,真空度≥0.06,水温控制60~70℃,挤出造粒,得到原料颗粒;
C)制作高耐候隔热透明膜:将原料颗粒在烘料桶中85℃烘烤3个小时,水分控制≤0.1%,接着投入到压延线平行双螺杆储料桶中,螺杆温度设置140-230℃,熔体泵设置220℃,模具温度设置205-215℃,温度稳定1小时后,依次开主螺杆,喂料螺杆,熔体泵,压延辊,牵引辊,模具出料后开罗茨泵,开始收卷后,开测厚仪,按照要求收卷得到高耐候隔热透明膜。
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