CN107118503A - 一种pc/abs塑料合金、其制备方法及应用 - Google Patents

一种pc/abs塑料合金、其制备方法及应用 Download PDF

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CN107118503A
CN107118503A CN201710469742.2A CN201710469742A CN107118503A CN 107118503 A CN107118503 A CN 107118503A CN 201710469742 A CN201710469742 A CN 201710469742A CN 107118503 A CN107118503 A CN 107118503A
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abs
abs plastic
plastic alloys
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徐勤干
金成根
王建锋
唐善强
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Shanghai automobile Polytron Technologies Inc
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
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Abstract

本发明公开了一种PC/ABS塑料合金、其制备方法及应用,涉及改性塑料合金技术领域,包括如下重量份数的组分:PC 25‑55份、ABS 70‑95份、Pa~MSt10‑20份、磷酸三(2,4‑二溴苯基)酯10‑15份、含硅阻燃剂10‑15份、相容剂5‑10份。本发明所制新型塑料合金与普通的工程塑料PP相比,强度和韧性高、表面硬度高、形状维持能力好、耐候性好、热胀冷缩小、材料密度与工程PP料类似,约1.05‑1.1左右。

Description

一种PC/ABS塑料合金、其制备方法及应用
技术领域:
本发明涉及改性塑料合金技术领域,具体涉及一种PC/ABS塑料合金、其制备方法及应用。
背景技术:
PC,即聚碳酸酯,具有优良的冲击韧性、电绝缘性、尺寸稳定性和耐热性,且使用温度范围广,是一种综合性能优越的工程塑料。但PC的熔融温度高,无自润滑性,加工流动性差,制品易应力开裂,耐药品性能及耐沸水老化性能差。
ABS,即聚乙烯,是一种强度高、韧性好、易于加工成型的热塑型高分子材料。因其强度高、耐腐蚀、耐高温,所以常被用于制造仪器的塑料外壳。ABS树脂是微黄色固体,有一定的韧性,密度约为1.04~1.06g/cm3。它抗酸、碱、盐的腐蚀能力比较强,也可在一定程度上耐受有机溶剂溶解。
PC与ABS两种树脂极性不同,彼此形态和结构差异很大,因此,PC/ABS体系属于极不相容的共混体系,通过简单共混挤出容易分层,并且物理力学性能差。
发明内容:
本发明所要解决的技术问题在于提供一种解决现有技术中PC和ABS相容性及机械性能差的PC/ABS塑料合金、其制备方法及应用。
本发明所要解决的技术问题采用以下的技术方案来实现:
一种PC/ABS塑料合金,包括如下重量份数的组分:
所述相容剂选自甲基丙烯酸-丁二烯-苯乙烯共聚物、玻璃纤维、苯乙烯/马来酸酐共聚物、ABS接枝共聚物、钛酸辛酯中一种或几种。
所述含硅阻燃剂中磷、硅、氮所占百分比为磷2.15%、硅2.4%、氮1.2%。
所述PC的熔融后流动速率为8-25g/10min(300℃,1.2kg),ABS的熔融后流动速率为19-23g/10min(220℃,10kg)。
所述塑料合金还包含总重量份数0.1-1份的紫外光吸收剂。
所述塑料合金还包含总重量份数1-5份的抗静电剂、着色剂、润滑剂中一种或几种。
所述塑料合金还包含总重量份数1-4份的增韧剂。
所述增韧剂选自苯乙烯-丁二烯嵌段共聚物、甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物、三元乙丙橡胶中的一种或几种。
为了提高所制塑料合金的使用性能,可选择性添加紫外光吸收剂、抗静电剂、着色剂、润滑剂和增韧剂。
一种PC/ABS塑料合金制备方法,包括如下步骤:
(1)将PC、ABS混合后干燥,再将P a~MSt、磷酸三(2,4-二溴苯基)酯、含硅阻燃剂、相容剂一起搅拌,得到塑料合金预混物;
(2)将上述所制塑料合金预混物加入双螺杆挤出机中,经挤出、冷却、风干后利用切粒机造粒,得到塑料合金。
所述双螺杆挤出机主机转速38-42Hz,喂料速度21Hz,主机电流小于120A,挤出机头220±10℃,切粒机转速500-600r/min。
一种PC/ABS塑料合金在汽车零部件、事务机器、通信器材、家电用品及照明设备上的应用。
本发明的有益效果是:
(1)通过添加ABS树脂,使塑料合金在使用中只呈现塑性破环,减少残余应力,使塑料合金缺口冲击敏感性也降低,耐应力性及厚壁耐冲击性可得到提高;
(2)相容剂的添加不仅容易捕获PC和ABS的游离基团,而且能促进其相互分散均匀、细化和稳定,降低表面张力,增加界面结合力,使PC和ABS之间具有更好的相容性,保证了ABS均匀分散在PC新料之间,实现了塑料合金性能的显著提升,尤其是缺口冲击强度、热变形温度及尺寸蠕变小、阻燃特性等;
(3)所述塑料合金制备方法操作简单,成本低廉,生成效益高,非常适于工业化生产;
(4)本发明所制新型塑料合金与普通的工程塑料PP相比,强度和韧性高(主要防撞击和冲击方面性能出色,成品可以在成人用力脚踹的情况下没有任何损伤)、表面硬度高(表现在表面耐划伤方面性能优良)、形状维持能力好(特别适合边缘不易做固定结构的覆盖件,如车门外板)、耐候性好(材料在长期日晒雨淋的情况下保持材料力学性能)、热胀冷缩小(在-20~60℃的温度冲击下变形量在千分之二,远小于工程PP料的千分之八,特别适合对热胀冷缩有严格要求的活动类覆盖件,如车门外板)、材料密度与工程PP料类似,约1.05-1.1左右。
具体实施方式:
为了使本发明实现的技术手段、创作特征、达成目的与功效易于明白了解,下面结合具体实施例,进一步阐述本发明。
实施例1
(1)将PC、ABS混合后干燥,再将P a~MSt、磷酸三(2,4-二溴苯基)酯、含硅阻燃剂、相容剂一起搅拌,得到塑料合金预混物;
(2)将上述所制塑料合金预混物加入双螺杆挤出机中,经挤出、冷却、风干后利用切粒机造粒,得到塑料合金。
其中,双螺杆挤出机主机转速38-42Hz,喂料速度21Hz,主机电流小于120A,挤出机头220±10℃,切粒机转速500-600r/min。
对本发明实施例1所制塑料合金的使用性能进行测试,结果如表1所示。以目前市售的由台州市黄岩明江塑胶有限公司生产的PP+E/P-T20、美国TPC公司生产的PP+GF10作为对照。
表1本发明塑料合金使用性能
此外,本发明所制塑料合金还具有以下性能:
耐沸水性能优良,在100℃经24h处理后,拉伸强度和弯曲强度几乎保持不变;耐老化性能良好,在120℃经24h处理后,冲击强度仍是纯PC的2倍以上;在-40℃经24h处理后,冲击性能保持良好。
以上显示和描述了本发明的基本原理和主要特征和本发明的优点。本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内。本发明要求保护范围由所附的权利要求书及其等效物界定。

Claims (10)

1.一种PC/ABS塑料合金,其特征在于:包括如下重量份数的组分:
2.根据权利要求1所述的PC/ABS塑料合金,其特征在于:所述相容剂选自甲基丙烯酸-丁二烯-苯乙烯共聚物、玻璃纤维、苯乙烯/马来酸酐共聚物、ABS接枝共聚物、钛酸辛酯中一种或几种。
3.根据权利要求1所述的PC/ABS塑料合金,其特征在于:所述含硅阻燃剂中磷、硅、氮所占百分比为磷2.15%、硅2.4%、氮1.2%。
4.根据权利要求1所述的PC/ABS塑料合金,其特征在于:所述塑料合金还包含总重量份数0.1-1份的紫外光吸收剂。
5.根据权利要求1所述的PC/ABS塑料合金,其特征在于:所述塑料合金还包含总重量份数1-5份的抗静电剂、着色剂、润滑剂中一种或几种。
6.根据权利要求1所述的PC/ABS塑料合金,其特征在于:所述塑料合金还包含总重量份数1-4份的增韧剂。
7.根据权利要求6所述的PC/ABS塑料合金,其特征在于:所述增韧剂选自苯乙烯-丁二烯嵌段共聚物、甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物、三元乙丙橡胶中的一种或几种。
8.一种PC/ABS塑料合金制备方法,包括如下步骤:
(1)将PC、ABS混合后干燥,再将P a~MSt、磷酸三(2,4-二溴苯基)酯、含硅阻燃剂、相容剂一起搅拌,得到塑料合金预混物;
(2)将上述所制塑料合金预混物加入双螺杆挤出机中,经挤出、冷却、风干后利用切粒机造粒,得到塑料合金。
9.根据权利要求8所述的PC/ABS塑料合金,其特征在于:所述双螺杆挤出机主机转速38-42Hz,喂料速度21Hz,主机电流小于120A,挤出机头220±10℃,切粒机转速500-600r/min。
10.一种如权利要求1-9所示PC/ABS塑料合金在汽车零部件、事务机器、通信器材、家电用品及照明设备上的应用。
CN201710469742.2A 2017-06-20 2017-06-20 一种pc/abs塑料合金、其制备方法及应用 Pending CN107118503A (zh)

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