CN101067037A - 一种阻燃pc复合材料及其制备方法 - Google Patents

一种阻燃pc复合材料及其制备方法 Download PDF

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CN101067037A
CN101067037A CNA2007100746638A CN200710074663A CN101067037A CN 101067037 A CN101067037 A CN 101067037A CN A2007100746638 A CNA2007100746638 A CN A2007100746638A CN 200710074663 A CN200710074663 A CN 200710074663A CN 101067037 A CN101067037 A CN 101067037A
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fire retardant
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titanium dioxide
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CN101067037B (zh
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徐东
贺永
何国洪
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Polymer Science Shenzhen New Materials Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/88—Thermal treatment of the stream of extruded material, e.g. cooling
    • B29C48/918—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling
    • B29C48/9185—Thermal treatment of the stream of extruded material, e.g. cooling characterized by differential heating or cooling in the direction of the stream of the material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/04—Particle-shaped
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
    • B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
    • B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92514—Pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92561—Time, e.g. start, termination, duration or interruption
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/92857—Extrusion unit
    • B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
    • B29C2948/92895—Barrel or housing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92819—Location or phase of control
    • B29C2948/9298—Start-up, shut-down or parameter setting phase; Emergency shut-down; Material change; Test or laboratory equipment or studies

Abstract

本发明公开了一种阻燃PC复合材料及其制备方法。该复合材料由以下重量配比的原料配制而成：聚碳酸酯69－73％；钛白粉8－12％；热塑料弹性体7－8％阻燃剂9－11.5％；抗氧剂0.5－2％。本发明阻燃PC复合材料用钛白粉填充增强替代玻璃纤维增强，极大地提高了材料的冲击韧性，使以本发明阻燃PC复合材料为原料制成的塑胶外壳可以通过UL746C的低温落球冲击测试。而且本发明阻燃PC复合材料的熔体流动性好，易注塑成型，最终产品质量好。

Description

一种阻燃PC复合材料及其制备方法
[技术领域]
本发明涉及高分子材料技术领域，尤其涉及一种阻燃PC复合材料及其制备方法。这种阻燃PC复合材料可以应用于生产出口型电子电气设备外壳。
[背景技术]
聚碳酸酯(PC)，由于其优异的耐候性能、高抗冲击性能、优异的电绝缘性而在电子电气、汽车工业、机械工业、包装材料等领域广泛应用。然而，未经改性的聚碳酸酯仍有很多不足之处，具体表现在加工流动性不足、低温冲击韧性不足、阻燃性不足、耐应力开裂性不足。聚碳酸酯经过改性，可以克服上述缺点。国外著名的聚碳酸酯生产商陶氏化学公司研发生产了一种阻燃增强PC复合材料(如PC：4731-8#)，获得了美国UL耐候性测试F1证书。这种材料被出口厂商应用于生产出口型电表外壳。但是这种材料的常温冲击与低温冲击强度仍不够高，不能通过UL746C标准中制品的低温-40度落球冲击测试。
[发明内容]
本发明要解决的技术问题是提供一种冲击韧性良好的阻燃PC复合材料。本发明还要提供该阻燃PC复合材料的制备方法。
为了解决上述技术问题，本发明采用的技术方案是，一种阻燃PC复合材料，由以下重量配比的原料配制而成：
聚碳酸酯             69-73％；
钛白粉               8-12％；
热塑料弹性体         7-8％；
阻燃剂               9-11.5％；
抗氧剂               0.5-2％。
以上所述的阻燃PC复合材料，最好由以下重量配比的原料配制而成：
聚碳酸酯             70-71％；
钛白粉               9-11％；
热塑料弹性体         7-8％；
阻燃剂               9.5-10.5％；
抗氧剂               0.8-1.5％。
以上所述的阻燃PC复合材料，所述的聚碳酸酯相对密度为1.2，熔点为220-230度的高粘度聚碳酸酯；所述的钛白粉是金红石型钛白粉；所述的热塑性弹性体是苯乙烯类热塑性弹性体SEBS；所述的阻燃剂是由溴化聚碳酸酯、溴化环氧树脂与无卤磷酸酯BDP复配而成；所述的抗氧剂为四[β-<3，5-二特丁基-4-羟基苯基>丙酸]季四醇酯。
上述的阻燃PC复合材料的制备方法，包括以下步骤：
将聚碳酸酯原料经120度/3小时的烘干处理，然后加入高速配料搅拌机中再加入钛白粉、热塑性弹性体、阻燃剂、抗氧剂干混合5分钟；
将混合好的预混料置于双螺杆机中经熔融挤出造粒，其挤出工艺为：双螺杆机一段温度190-220度、二段温度200-230度、三段温度240-250度、停留时间1-2分钟、压力为10-15MPa。
本发明阻燃PC复合材料用钛白粉填充增强替代玻璃纤维增强，极大地提高了材料的冲击韧性，使以本发明阻燃PC复合材料为原料制成的塑胶外壳可以通过UL746C的低温落球冲击测试。而且本发明阻燃PC复合材料的熔体流动性好，易注塑成型，最终产品质量好。
[具体实施方式]
下面通过实施例对本发明作进一步阐述：
实施例一：按如下配方配制原料：聚碳酸酯73％、钛白粉8％、苯乙烯热塑性弹性体7％、复配阻燃剂11.5％、抗氧剂0.5％。配好的预混料置于双螺杆挤出机中经熔融挤出造粒。其工艺为：双螺杆机一段温度190-220度、二段温度200-220度、三段温度240-250度、停留时间1-2分钟、压力为10MPa。
实施例二：按如下配方配制原料：聚碳酸酯71％、钛白粉10％、苯乙烯热塑性弹性体8％、复配阻燃剂10％、抗氧剂1％。配好的预混料置于双螺杆挤出机中经熔融挤出造粒。其工艺为：双螺杆机一段温度190-220度、二段温度200-220度、三段温度240-250度、停留时间1-2分钟、压力为10MPa。
实施例三：按如下配方配制原料：聚碳酸酯69％、钛白粉12％、苯乙烯热塑性弹性体8％、复配阻燃剂9％、抗氧剂2％。配好的预混料置于双螺杆挤出机中经熔融挤出造粒。其工艺为：双螺杆机一段温度190-220度、二段温度200-220度、三段温度240-250度、停留时间1-2分钟、压力为10Mpa
在上述实施例中，聚碳酸酯为相对密度1.2、熔点220-230度的PC料；钛白粉是金红石型钛白粉；热塑性弹性体是一种苯乙烯类热塑性弹性体；阻燃剂是由溴类阻燃剂与无卤磷酸酯复配而成；抗氧剂是四[β-<3.5-二特丁基-4-羟基苯基>丙酸丁季四醇酯。
下表是陶氏化学公司PC：4731-8#与本发明阻燃PC复合材料实施例1-3的性能对照表
测试项目 陶氏化学PC：4731-8#        本发明阻燃PC复合材料   对照说明
实施例配方1# 实施例配方2# 实施例配方3#
常温冲击强度 107KJ/m2 39KJ/m2 31KJ/m2 30KJ/m2 本发明的材料常温与超低温冲击韧性更高
超低温冲击-40度/3h 95KJ/m2 37KJ/m2 30KJ/m2 29KJ/m2
伸长率 4％ 57％ 32％ 20％
拉伸强度 65MPa 54MPa 57MPa 59MPa
弯曲强度 109MPa 79MPa 85MPa 90MPa
弯曲模量 3650MPa 1884MPa 2330MPa 2450MPa
热变形温度 135度 126度 130度 132度
熔流指数300度/1.2kgf 8g 9g 11g 15g 本发明的材料熔体流动性更高
比重 1.27g/cm3 1.27g/cm3 1.27g/cm3 1.27g/cm3 UL阻燃性更好
UL阻燃性 1.5mm VO级通过 VO级通过 VO级通过 VO级通过
1.0mm 不通过VO级 VO级通过 VO级通过 VO级通过
通过对比可以看到本发明的有益效果是：
1.本发明阻燃PC复合材料无论在常温或低温下比陶氏化学公司的电表外壳用料PC 4731-8#冲击韧性更高，能通过美国UL746C标准关于电子电气设备外壳用聚合材料的要求。而陶氏化学公司的PC 4731-8#没能达到美国UL746C标准要求。PC 4731-8#不适合注塑成型出口型的电表外壳。
2.本发明阻燃PC复合材料的熔体流动性比陶氏化学公司的PC4731-8#更好，更易注塑成型，最终产品质量更好。
3.本发明阻燃PC复合材料的UL阻燃等级高于陶氏化学公司的PC 4731-8#。

Claims (8)

1.一种阻燃PC复合材料，其特征在于，由以下重量配比的原料配制而成：
聚碳酸酯                  69-73％；
钛白粉                    8-12％；
热塑料弹性体              7-8％；
阻燃剂                    9-11.5％；
抗氧剂                    0.5-2％。
2.根据权利要求1所述的阻燃PC复合材料，其特征在于，由以下重量配比的原料配制而成：
聚碳酸酯                  70-71％；
钛白粉                    9-11％；
热塑料弹性体              7-8％；
阻燃剂                    9.5-10.5％；
抗氧剂                    0.8-1.5％。
3.根据权利要求1或2所述的阻燃PC复合材料，其特征在于，所述的聚碳酸酯相对密度为1.2，熔点为220-230度的高粘度聚碳酸酯。
4.根据权利要求1或2所述的阻燃PC复合材料，其特征在于，所述的钛白粉是金红石型钛白粉。
5.根据权利要求1所述的阻燃PC复合材料，其特征在于，所述的热塑性弹性体是苯乙烯类热塑性弹性体SEBS。
6.根据权利要求1所述的阻燃PC复合材料，其特征在于，所述的阻燃剂是由溴化聚碳酸酯、溴化环氧树脂与无卤磷酸酯BDP复配而成。
7.根据权利要求1所述的阻燃PC复合材料，其特征在于，所述的抗氧剂为四[β-<3，5-二特丁基-4-羟基苯基>丙酸]季四醇酯。
8.权利要求1所述的阻燃PC复合材料的制备方法，其特征在于，包括以下步骤：
将聚碳酸酯原料经120度/3小时的烘干处理，然后加入高速配料搅拌机中再加入钛白粉、热塑性弹性体、阻燃剂、抗氧剂干混合5分钟；
将混合好的预混料置于双螺杆机中经熔融挤出造粒，其挤出工艺为：双螺杆机一段温度190-220度、二段温度200-230度、三段温度240-250度、停留时间1-2分钟、压力为10-15MPa。
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DE602006020717D1 (de) * 2005-05-19 2011-04-28 Teijin Chemicals Ltd Polycarbonatharzzusammensetzung
KR100665806B1 (ko) * 2005-06-30 2007-01-09 제일모직주식회사 광반사성이 우수한 폴리카보네이트 수지 조성물

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CN102179024A (zh) * 2010-09-16 2011-09-14 陕西坚瑞消防股份有限公司 通过高温进行组分间发生化学反应产生灭火物质的灭火组合物
CN102850749A (zh) * 2012-09-20 2013-01-02 常熟市凯力达蜂窝包装材料有限公司 Sebs改性的聚碳酸酯合金材料的制备方法
CN102850755A (zh) * 2012-09-21 2013-01-02 常熟市凯力达蜂窝包装材料有限公司 阻燃的sebs改性的聚碳酸酯合金材料
CN102850752A (zh) * 2012-09-21 2013-01-02 常熟市凯力达蜂窝包装材料有限公司 阻燃的sebs改性的聚碳酸酯合金材料的制备方法
CN103817849A (zh) * 2014-02-25 2014-05-28 东莞市劲升无尘涂装科技有限公司 一种电子产品外壳tpu珠光立体成型工艺
CN105670244A (zh) * 2016-04-26 2016-06-15 金宝丽科技（苏州）有限公司 一种添加有纳米钛白粉的塑胶片材及其制备方法

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