CN111823675B - 一种基于pmma/pc的复合板及其制备方法、应用 - Google Patents
一种基于pmma/pc的复合板及其制备方法、应用 Download PDFInfo
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Abstract
本发明公开了一种基于PMMA/PC的复合板及其制备方法、应用,属于高分子复合材料制备技术领域。一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得。本发明采用三层共挤出技术,避免了传统胶粘所产生的的裂层现象;高温环境下,通过复合有机磷酸、亚磷酸三壬基苯酯与乙烯‑醋酸乙烯共聚物发生熔融、交联反应,再熔融共混挤出制得有机磷类阻燃母粒;这种母粒用于复合板的制备,提高了复合板阻燃性能、抗冲击性、机械性能,且制备方法简单、便捷。同时,在制备过程中由于未添加金属元素,其具有低电磁屏蔽性,应用前景广阔。
Description
技术领域
本发明涉及高分子复合材料制备技术领域,尤其涉及一种基于PMMA/PC的复合板及其制备方法、应用。
背景技术
随着科技的发展,电子移动终端产品被广泛的应用,包括手机、平板电脑等,越来越多的人在注重产品质量的同时,更加注重外观美感。对于电子移动产品终端后盖,从最初的金属材质、玻璃材质已发展为硬性塑料材质。
树脂型复合板材,与玻璃盖板相比,具有玻璃材质的性能,且更加轻薄、具备更强的抗摔性和耐磨性,被广泛应用于中低端消费电子产品中,其高端复合板制作技术壁垒高,目前供应偏紧。虽然其具有成本优势,但是,其耐刮擦性能、阻燃性、抗冲击性、防指纹效果不佳。
发明内容
针对上述存在的问题,本发明的第一个目的是提供一种基于PMMA/PC的复合板,通过调节原材料的种类及配比来达到与后续制备设备高度契合,这种复合板,厚度均一,耐磨性、阻燃性和抗冲击性良好。
本发明的另一个目的是提供基于PMMA/PC的复合板的制备方法,采用熔融共混三层挤出、涂布、覆膜等步骤来制备复合板,这种方法简单、便捷,实用性强。
本发明的另一个目的是提供一种基于PMMA/PC的复合板的应用,其主要应用于移动终端壳体。
为了解决上述技术问题所采取的技术方案为:
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得。
进一步地,所述PMMA/PC/PMMA层包括下列重量份的原料:PMMA树脂150-270份、PC树脂150-250份、玻璃纤维5-10份、无卤阻燃剂10-40份、乙烯-醋酸乙烯共聚物50-70份、亚磷酸三壬基苯酯0.08-1份。
进一步地,所述无卤阻燃剂为聚多磷酸铵、磷酸三异丙苯酯、磷酸三甲苯酯中的至少一种。
进一步地,所述PMMA/PC/PMMA层的制备方法为:
S1.将所述重量份的无卤阻燃剂、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4.将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中搅拌混合40-50min,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层。
进一步地,所述S2中双螺杆挤出分三段升温区,第一段区:60-90℃,第二段区:100-120℃,第三段区160℃~180℃,挤出模口温度为180℃。
进一步地,所述S3中所述搅拌器的搅拌速率为500rpm。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1、将PMMA/PC/PMMA层两面涂布有硬化涂层;
S2、涂布硬化涂层的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S3、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
进一步地,所述硬化涂层为水溶性UV。
具体地,所述AF保护膜为三层防指纹PET保护膜,购自东莞市纳利光学材料有限公司。
一种基于PMMA/PC的复合板,用于移动终端壳体。
本发明至少包括以下有益效果:
1、本发明的一种基于PMMA/PC的复合板,这种复合板轻薄、耐磨、阻燃和抗冲击性好;由于未添加金属元素,其具有低电磁屏蔽性;
2、本发明的一种基于PMMA/PC的复合板的制备方法,采用三层共挤出技术,避免了传统胶粘所产生的的裂层现象;本发明在高温环境下,通过磷酸三异丙苯酯、磷酸三甲苯酯、亚磷酸三壬基苯酯与乙烯-醋酸乙烯共聚物发生熔融、交联反应,再进行熔融共混挤出操作,得有机磷类阻燃母粒;这种阻燃剂用于复合板的制备,可大大提高其阻燃性能和抗冲击性,也增强了复合板的机械性能,且制备方法简单、便捷。
具体实施方式
下面结合实施例对本发明做进一步的详细说明,以令本领域技术人员参照说明书文字能够据以实施。
应当理解,本文所使用的诸如“具有”、“包含”以及“包括”术语并不配出一个或多个其它元件或其组合的存在或添加。
实施例1
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列的原料:PMMA树脂2.5Kg、PC树脂2.0Kg、玻璃纤维0.08Kg、磷酸三异丙苯酯0.1Kg、磷酸三甲苯酯0.15Kg、乙烯-醋酸乙烯共聚物0.6Kg、亚磷酸三壬基苯酯0.0009Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将所述重量的磷酸三异丙苯酯、磷酸三甲苯酯、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出,熔融升温分三段区,第一段区:80℃,第二段区:110℃,第三段区:170℃,挤出模口温度为180℃,挤出后造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4.将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中进行500rpm、45min搅拌混合,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S7、将PMMA/PC/PMMA层两面涂布水溶性UV;
S8、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S9、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
实施例2
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列原料:PMMA树脂1.5Kg、PC树脂1.5Kg、玻璃纤维0.05Kg、磷酸三异丙苯酯0.05Kg、磷酸三甲苯酯0.05Kg、乙烯-醋酸乙烯共聚物0.5Kg、亚磷酸三壬基苯酯0.0008Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将所述重量的磷酸三异丙苯酯、磷酸三甲苯酯、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出,熔融升温分三段区,第一段区:80℃,第二段区:110℃,第三段区:170℃,挤出模口温度为180℃,挤出后造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4.将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中进行500rpm、45min搅拌混合,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S7、将PMMA/PC/PMMA层两面涂布水溶性UV;
S8、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S9、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
实施例3
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列原料:PMMA树脂2.7Kg、PC树脂2.5Kg、玻璃纤维0.1Kg、磷酸三异丙苯酯0.25Kg、磷酸三甲苯酯0.15Kg、乙烯-醋酸乙烯共聚物0.7Kg、亚磷酸三壬基苯酯0.01Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将所述重量的磷酸三异丙苯酯、磷酸三甲苯酯、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出,熔融升温分三段区,第一段区:80℃,第二段区:110℃,第三段区:170℃,挤出模口温度为180℃,挤出后造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4.将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中进行500rpm、45min搅拌混合,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S7、将PMMA/PC/PMMA层两面涂布水溶性UV;
S8、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S9、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
实施例1-3在制备复合板的过程中原料的配比不同,所得复合板的性能有所差异,最终发现,当使用实施例1的原料配比时,所得复合板的抗冲击性好,阻燃性能优异,耐磨性优异。
实施例4
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列原料:PMMA树脂2.5Kg、PC树脂2.0Kg、玻璃纤维0.08Kg、磷酸三异丙苯酯0.25Kg、乙烯-醋酸乙烯共聚物0.6Kg、亚磷酸三壬基苯酯0.0009Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将所述重量的磷酸三异丙苯酯、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出,熔融升温分三段区,第一段区:80℃,第二段区:110℃,第三段区:170℃,挤出模口温度为180℃,挤出后造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4.将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中进行500rpm、45min搅拌混合,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S7、将PMMA/PC/PMMA层两面涂布水溶性UV;
S8、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S9、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
实施例5
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列原料:PMMA树脂2.5Kg、PC树脂2.0Kg、玻璃纤维0.08Kg、聚多磷酸铵0.25Kg、乙烯-醋酸乙烯共聚物0.6Kg、亚磷酸三壬基苯酯0.0009Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将所述重量的聚多磷酸铵、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出,熔融升温分三段区,第一段区:80℃,第二段区:110℃,第三段区:170℃,挤出模口温度为180℃,挤出后造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4.将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中进行500rpm、45min搅拌混合,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S7、将PMMA/PC/PMMA层两面涂布水溶性UV;
S8、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S9、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
实施例6
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列原料:PMMA树脂2.5Kg、PC树脂2.0Kg、玻璃纤维0.08Kg、磷酸三甲苯酯0.25Kg、乙烯-醋酸乙烯共聚物0.6Kg、亚磷酸三壬基苯酯0.0009Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将所述重量的磷酸三甲苯酯、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出,熔融升温分三段区,第一段区:80℃,第二段区:110℃,第三段区:170℃,挤出模口温度为180℃,挤出后造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4.将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中进行500rpm、45min搅拌混合,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S7、将PMMA/PC/PMMA层两面涂布水溶性UV;
S8、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S9、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
通过实施例1、4、5、6可知,当阻燃剂为磷酸三异丙苯酯、磷酸三甲苯酯组合物时,所得复合板的阻燃性能优异,同时复合板的抗冲击性有所提高。
实施例7
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列原料:PMMA树脂2.5Kg、PC树脂2.0Kg、玻璃纤维0.08Kg、磷酸三异丙苯酯0.1Kg、磷酸三甲苯酯0.15Kg、乙烯-醋酸乙烯共聚物0.6Kg、亚磷酸三壬基苯酯0.0009Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将所述重量的磷酸三异丙苯酯、磷酸三甲苯酯、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出,熔融升温分三段区,第一段区:60℃,第二段区:100℃,第三段区:160℃,挤出模口温度为180℃,挤出后造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4.将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中进行500rpm、45min搅拌混合,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S7、将PMMA/PC/PMMA层两面涂布水溶性UV;
S8、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S9、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
实施例8
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列原料:PMMA树脂2.5Kg、PC树脂2.0Kg、玻璃纤维0.08Kg、磷酸三异丙苯酯0.1Kg、磷酸三甲苯酯0.15Kg、乙烯-醋酸乙烯共聚物0.6Kg、亚磷酸三壬基苯酯0.0009Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将所述重量的磷酸三异丙苯酯、磷酸三甲苯酯、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出,熔融升温分三段区,第一段区:90℃,第二段区:120℃,第三段区:180℃,挤出模口温度为180℃,挤出后造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4.将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中进行500rpm、45min搅拌混合,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S7、将PMMA/PC/PMMA层两面涂布水溶性UV;
S8、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S9、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
在高温环境下,磷酸三异丙苯酯、磷酸三甲苯酯、亚磷酸三壬基苯酯与乙烯-醋酸乙烯共聚物发生熔融、交联反应,再进行熔融共混挤出操作,得有机磷类阻燃母粒。通过实施例1、7、8比较,将阻燃母粒进行熔融共混挤出阶段的温度对终产品复合板的阻燃性有影响,对复合板的抗冲击性有影响。当基础阶段三段区温度为实施例1所述的温度时,所得复合板的阻燃性、抗冲击性优异。
对比例1
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列原料:PMMA树脂2.5Kg、PC树脂2.0Kg、玻璃纤维0.08Kg、磷酸三异丙苯酯0.1Kg、磷酸三甲苯酯0.15Kg、乙烯-醋酸乙烯共聚物0.6Kg、亚磷酸三壬基苯酯0.0009Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将所述重量的磷酸三异丙苯酯、磷酸三甲苯酯、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2.将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S3.将混合料平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中进行500rpm、45min搅拌混合,备用;
S4、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S5、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S6、将PMMA/PC/PMMA层两面涂布水溶性UV;
S7、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S8、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
通过实施例1和对比例1可知,阻燃母粒的制备应用使终产品复合板的抗冲击性明显增加,阻燃性能也较未使用阻燃母粒时优异。
对比例2
一种基于PMMA/PC的复合板,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得,所述PMMA/PC/PMMA层包括下列原料:PMMA树脂2.5Kg、PC树脂2.0Kg、玻璃纤维0.08Kg。
一种基于PMMA/PC的复合板的制备方法,包括下列步骤:
S1.将0.08Kg玻璃纤维加入到2.0KgPC树脂中,混合搅拌10min,得PC-玻纤料;
S2.1.25KgPMMA树脂进入1号挤出线;PC-玻纤料进入2号挤出线;1.25KgPMMA树脂进入3号挤出线;
S3、PC-玻纤料经过2号挤出线后进入1号挤出线的1号模具分配器;1.25Kg PMMA树脂经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
S4、将PMMA/PC/PMMA层两面涂布水溶性UV;
S5、涂布水溶性UV的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S6、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
实施例1与对比例2比较发现,阻燃母粒的加入,使复合板抗冲击性有所提高,同时不会使终产物复合板在使用时间较长的情况下发黄。
表1复合板性能测试结果
尽管本发明的实施方案已公开如上,但其并不仅仅限于说明书和实施方式中所列运用,它完全可以被适用于各种适合本发明的领域,对于熟悉本领域的人员而言,可容易地实现另外的修改,因此在不背离权利要求及等同范围所限定的一般概念下,本发明并不限于特定的细节和这里示出与描述的实例。
Claims (6)
1.一种基于PMMA/PC的复合板,其特征在于,由下而上设有AF保护膜、硬化涂层、PMMA/PC/PMMA层、硬化涂层、AF保护膜,所述PMMA/PC/PMMA层由三层共挤出获得;
所述PMMA/PC/PMMA层包括下列重量份的原料:PMMA树脂150-270份、PC树脂150-250份、玻璃纤维5-10份、无卤阻燃剂10-40份、乙烯-醋酸乙烯共聚物50-70份、亚磷酸三壬基苯酯0.08-1份;
所述PMMA/PC/PMMA层的制备方法为:
S1. 将所述重量份的无卤阻燃剂、乙烯-醋酸乙烯共聚物、亚磷酸三壬基苯酯加入到高速搅拌机中,在温度为90℃,转速为7000rpm下进行10min共混,得混合料;
S2. 将所述混合料加入到双螺杆挤出机中,在螺杆转速为60rpm下进行熔融共混挤出造粒,得阻燃母粒;将所述阻燃母粒放入粉碎机中进行粉碎,过50目筛;
S3. 将所述玻璃纤维加入到PC树脂中,混合搅拌10min,得PC-玻纤料;将PMMA树脂平均分为2份,标注为PMMA树脂-1,PMMA树脂-2;
S4. 将粉碎后的阻燃母粒平均分成五份,两份加入到PMMA树脂-1中制得混料1,一份加入到PC-玻纤料制得混料2,两份加入到PMMA树脂-2中制得混料3;将所述混料1、混料2、混料3分别放入搅拌器中搅拌混合40-50min,备用;
S5、搅拌后的混料1进入1号挤出线;搅拌后的混料2进入2号挤出线;搅拌后的混料3进入3号挤出线;
S6、混料2经过2号挤出线后进入1号挤出线的1号模具分配器;混料3经过3号挤出线后进入2号挤出线的2号模具分配器;3条挤出线的原料共同进入模头共挤出,得PMMA/PC/PMMA层;
所述无卤阻燃剂为聚多磷酸铵、磷酸三异丙苯酯、磷酸三甲苯酯中的至少一种。
2.如权利要求1所述的一种基于PMMA/PC的复合板,其特征在于,所述S2中双螺杆挤出分三段升温区,第一段区:60-90℃,第二段区:100-120℃,第三段区160°C~180°C,挤出模口温度为180℃。
3.如权利要求1所述的一种基于PMMA/PC的复合板,其特征在于,所述S3中所述搅拌器的搅拌速率为500rpm。
4.如权利要求1-3任一项所述的一种基于PMMA/PC的复合板的制备方法,其特征在于,包括下列步骤:
S1、将PMMA/PC/PMMA层两面涂布有硬化涂层;
S2、涂布硬化涂层的PMMA/PC/PMMA层经贴合辊贴合AF保护膜,即得成品复合板;
S3、成品复合板经过牵引辊,自然冷却,裁切机裁切成相应尺寸。
5.如权利要求4所述的一种基于PMMA/PC的复合板的制备方法,其特征在于,所述硬化涂层为水溶性UV。
6.如权利要求1所述的一种基于PMMA/PC的复合板的应用,其特征在于,用于移动终端壳体。
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