CN103881342A - 阻燃改性pc/pbt合金材料及其制备方法 - Google Patents

阻燃改性pc/pbt合金材料及其制备方法 Download PDF

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CN103881342A
CN103881342A CN201210561471.0A CN201210561471A CN103881342A CN 103881342 A CN103881342 A CN 103881342A CN 201210561471 A CN201210561471 A CN 201210561471A CN 103881342 A CN103881342 A CN 103881342A
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alloy material
flame
pbt
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Qingdao Xinzhan Plastic Co Ltd
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Abstract

本发明公开了一种阻燃改性PC/PBT合金材料及其制备方法。本发明的阻燃改性PC/PBT合金材料，其组分按质量百分数配比为：PC30%～60%、PBT30%～60%、阻燃剂12%～25%、亚磷酸三苯酯0.5%～2%、增容剂0.5%～2%、分散剂0.5%～2%、稳定剂0.1%～1%、抗氧剂0.1%～1%。本发明的有益效果是，与现有技术相比，本发明的PC/PBT合金材料不仅兼备了PC和PBT各自的优点，其相容性好，综合性能优良，而且还具有高阻燃性和达UL94V-0阻燃级，尺寸稳定性好，抗冲击强度高，表面光泽外观好，广泛用于汽车保险杆的加工材料。本发明提出的阻燃改性PC/PBT合金材料的制备方法简单，操作方便，成本低。

Description

阻燃改性PC/PBT合金材料及其制备方法
技术领域
本发明涉及高分子材料技术领域，具体地说是一种阻燃改性PC/PBT合金材料及其制备方法。
背景技术
聚碳酸酯（PC）是五大工程塑料之一，具有综合均衡的机械、电气及耐热性能，以优异的抗冲击强度和耐蠕变性著称，但PC的熔体粘度大，易发生应力开裂，流动性差，耐溶剂性差，耐磨性不良。聚对苯二甲酸丁二醇酯（PBT）是一种结晶速度较快的热塑性工程塑料，具有优异的耐溶剂性，熔体流动性好，但PBT的玻璃化温度低，高温刚性不足，缺口敏感性大。因此，将PC和PBT进行共混改性，可克服PBT耐热性差、耐冲击性低、缺口冲击强度不高的缺点，同时弥补了PC耐化学药品性、成型加工性和耐磨性的不足，具有很好的实用前景。
由于PC燃烧时会放出CO2能自熄，其氧指数为21%～24%，阻燃性能达UL94 V-2级，本身具有一定的阻燃性，而作为工程塑料使用的PC，其所应用的大多数领域对其阻燃性能有着非常高的要求。同时，共混PC/PBT合金材料燃烧时滴落的热熔体很易引起附近的材料着火，为此，必须对PC/PBT合金材料进行阻燃改性。
发明内容
本发明的目的在于提供一种相容性好、力学性能优良和防火阻燃性能高的阻燃改性PC/PBT合金材料及其制备方法。
本发明解决其技术问题所采用的技术方案是：阻燃改性PC/PBT合金材料，其组分按质量百分数配比为：PC 30%～60%、PBT 30%～60%、阻燃剂12%～25%、亚磷酸三苯酯0.5%～2%、增容剂0.5%～2%、分散剂0.5%～2%、稳定剂0.1%～1%、抗氧剂0.1%～1%。
所述的PC为聚碳酸酯。
所述的PBT为聚对苯二甲酸丁二醇酯。
所述的阻燃剂为十溴联苯醚、聚2，6-二溴亚苯基醚、双酚A双（磷酸二苯酯）阻燃剂（BDP）、聚硅氧烷阻燃剂、三聚氰胺阻燃剂中的一种。
所述的增容剂为乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物（E-MA-GMA）。
所述的分散剂为低分子聚乙烯、EVA蜡、OP蜡、TAS-2A、乙撑双硬脂酸酰胺（EBS）中的一种。
所述的稳定剂为2-羟基-4-甲氧基二苯甲酮。
所述的抗氧剂为受阻酚类抗氧剂1076与亚磷酸酯类抗氧剂168的复配物。
上述的阻燃改性PC/PBT合金材料的制备方法，包括以下步骤：
（1）将PC在120℃～130℃下干燥3～4小时，含水率控制在0.02%以下，待用；
（2）将PBT在130℃～150℃下干燥3～4小时，含水率控制在0.03%以下，待用；
（3）将阻燃剂在80℃～100℃下干燥30～60分钟，待用；
（4）按重量配比称取干燥处理后的PC、PBT和阻燃剂加入高速混合机，混合均匀，再加入按重量配比称取的亚磷酸三苯酯、增容剂、分散剂、稳定剂和抗氧剂，使一起充分混合10～30分钟；
（5）再将上述混合好的物料加入双螺杆挤出机充分熔融共混，熔融温度控制在210℃～255℃，螺杆转速为300～600转/分钟，通过双螺杆挤出机的剪切、混炼、挤出，再进行冷却、风干、切粒、干燥即得本发明的阻燃改性PC/PBT合金材料。
本发明加入亚磷酸三苯酯的目的是抑制PC与PBT之间的酯交换反应的发生。
本发明的有益效果是，与现有技术相比，本发明的PC/PBT合金材料不仅兼备了PC和PBT各自的优点，其相容性好，综合性能优良，而且还具有高阻燃性和达UL94V-0阻燃级，尺寸稳定性好，抗冲击强度高，表面光泽外观好，广泛用于汽车保险杆的加工材料。本发明提出的阻燃改性PC/PBT合金材料的制备方法简单，操作方便，成本低。
具体实施方式
下面结合具体实施例来进一步说明本发明的技术方案。
实施例1：
一种阻燃改性PC/PBT合金材料，其组分按质量百分数配比为：PC 40%、PBT 40%、十溴联苯醚15%、亚磷酸三苯酯1%、乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物（E-MA-GMA）1%、OP蜡1.5%、2-羟基-4-甲氧基二苯甲酮0.5%、受阻酚类抗氧剂1076与亚磷酸酯类抗氧剂168的复配物1%。
制备方法：（1）将PC在120℃～130℃下干燥3～4小时，含水率控制在0.02%以下，待用；（2）将PBT在130℃～150℃下干燥3～4小时，含水率控制在0.03%以下，待用；（3）将十溴联苯醚在80℃～100℃下干燥30～60分钟，待用；（4）按重量配比称取干燥处理后的PC、PBT和十溴联苯醚加入高速混合机，混合均匀，再加入按重量配比称取的亚磷酸三苯酯、乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物（E-MA-GMA）、OP蜡、2-羟基-4-甲氧基二苯甲酮和受阻酚类抗氧剂1076与亚磷酸酯类抗氧剂168的复配物，使一起充分混合10～30分钟；（5）再将上述混合好的物料加入双螺杆挤出机充分熔融共混，熔融温度控制在210℃～255℃，螺杆转速为300～600转/分钟，通过双螺杆挤出机的剪切、混炼、挤出，再进行冷却、风干、切粒、干燥即得本发明的阻燃改性PC/PBT合金材料。
实施例2：
一种阻燃改性PC/PBT合金材料，其组分按质量百分数配比为：PC 55%、PBT 25%、双酚A双（磷酸二苯酯）阻燃剂（BDP）18%、亚磷酸三苯酯0.5%、乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物（E-MA-GMA）0.5%、乙撑双硬脂酸酰胺（EBS）0.5%、2-羟基-4-甲氧基二苯甲酮0.2%、受阻酚类抗氧剂1076与亚磷酸酯类抗氧剂168的复配物0.3%。
制备方法：（1）将PC在120℃～130℃下干燥3～4小时，含水率控制在0.02%以下，待用；（2）将PBT在130℃～150℃下干燥3～4小时，含水率控制在0.03%以下，待用；（3）将双酚A双（磷酸二苯酯）阻燃剂（BDP）在80℃～100℃下干燥30～60分钟，待用；（4）按重量配比称取干燥处理后的PC、PBT和双酚A双（磷酸二苯酯）阻燃剂（BDP）加入高速混合机，混合均匀，再加入按重量配比称取的亚磷酸三苯酯、乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物（E-MA-GMA）、乙撑双硬脂酸酰胺（EBS）、2-羟基-4-甲氧基二苯甲酮和受阻酚类抗氧剂1076与亚磷酸酯类抗氧剂168的复配物，使一起充分混合10～30分钟；（5）再将上述混合好的物料加入双螺杆挤出机充分熔融共混，熔融温度控制在210℃～255℃，螺杆转速为300～600转/分钟，通过双螺杆挤出机的剪切、混炼、挤出，再进行冷却、风干、切粒、干燥即得本发明的阻燃改性PC/PBT合金材料。

Claims (7)

1.一种阻燃改性PC/PBT合金材料，其特征在于，其组分按质量百分数配比为：PC 30%～60%、PBT 30%～60%、阻燃剂12%～25%、亚磷酸三苯酯0.5%～2%、增容剂0.5%～2%、分散剂0.5%～2%、稳定剂0.1%～1%、抗氧剂0.1%～1%。
2.根据权利要求1所述的阻燃改性PC/PBT合金材料，其特征在于，所述的阻燃剂为十溴联苯醚、聚2，6-二溴亚苯基醚、双酚A双（磷酸二苯酯）阻燃剂（BDP）、聚硅氧烷阻燃剂、三聚氰胺阻燃剂中的一种。
3.根据权利要求1所述的阻燃改性PC/PBT合金材料，其特征在于，所述的增容剂为乙烯-丙烯酸甲酯-甲基丙烯酸缩水甘油酯三元共聚物（E-MA-GMA）。
4.根据权利要求1所述的阻燃改性PC/PBT合金材料，其特征在于，所述的分散剂为低分子聚乙烯、EVA蜡、OP蜡、TAS-2A、乙撑双硬脂酸酰胺（EBS）中的一种。
5.根据权利要求1所述的阻燃改性PC/PBT合金材料，其特征在于，所述的稳定剂为2-羟基-4-甲氧基二苯甲酮。
6.根据权利要求1所述的阻燃改性PC/PBT合金材料，其特征在于，所述的抗氧剂为受阻酚类抗氧剂1076与亚磷酸酯类抗氧剂168的复配物。
7.根据权利要求1所述的阻燃改性PC/PBT合金材料的制备方法，其特征在于，包括以下步骤：
（1）将PC在120℃～130℃下干燥3～4小时，含水率控制在0.02%以下，待用；
（2）将PBT在130℃～150℃下干燥3～4小时，含水率控制在0.03%以下，待用；
（3）将阻燃剂在80℃～100℃下干燥30～60分钟，待用；
（4）按重量配比称取干燥处理后的PC、PBT和阻燃剂加入高速混合机，混合均匀，再加入按重量配比称取的亚磷酸三苯酯、增容剂、分散剂、稳定剂和抗氧剂，使一起充分混合10～30分钟；
（5）再将上述混合好的物料加入双螺杆挤出机充分熔融共混，熔融温度控制在210℃～255℃，螺杆转速为300～600转/分钟，通过双螺杆挤出机的剪切、混炼、挤出，再进行冷却、风干、切粒、干燥即得本发明的阻燃改性PC/PBT合金材料。
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Cited By (1)

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Publication number Priority date Publication date Assignee Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106009593A (zh) * 2016-07-22 2016-10-12 马建剑 一种高硬度阻燃pc/pbt/pp塑料合金及其制备方法

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