CN104629313A - 玻纤增强阻燃改性pc/abs合金 - Google Patents
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Abstract
本发明公开了一种玻纤增强阻燃改性PC/ABS合金,其组分按质量百分数配比为:PC树脂40%~60%、ABS树脂10%~40%、玻璃纤维5%~20%、纳米碳酸钙复合微粒2%~8%、阻燃母粒2%~8%、相容剂1%~3%、抗氧剂0.1%~0.5%、分散剂0.5%~1%。本发明的有益效果是,本发明在兼具有PC、ABS两者优点的同时,具有拉伸强度、弯曲强度、冲击强度优良的综合力学性能,而且光泽性好、阻燃性能优异,并且符合无卤、高效、安全、环保、无熔滴和UL94V-0级的阻燃性能,同时加工流动性好,制备方便简单,易于实现工业化生产等。
Description
技术领域
本发明涉及高分子材料技术领域,具体地说是一种玻纤增强阻燃改性PC/ABS合金。
背景技术
聚碳酸酯(PC)/丙烯腈-丁二烯-苯乙烯共聚物(ABS),综合了PC和ABS两者的优良性能,一方面可降低PC的成本和熔体黏度,提高流动性,改善其加工性能,另一方面可提高PC的耐应力开裂性,降低冲击对厚度和缺口的敏感性,是一种性能较为理想的聚合物合金。然而,PC/ABS合金属于部分相容性的聚合物合金,其相容性不是很好,导致PC/ABS合金的力学性能达不到理想效果,阻燃性也不高,不能达到V-0阻燃级水平,这些不足在一定程度上限制了PC/ABS合金的应用。因此,通常需在PC/ABS合金中加入第三组分进行改性,以得到高性能、多功能化的PC/ABS合金材料,满足其在力学性能、阻燃等方面较高要求的应用场合。
发明内容
本发明的目的在于提供一种玻纤增强阻燃改性PC/ABS合金。
本发明解决其技术问题所采用的技术方案是:玻纤增强阻燃改性PC/ABS合金,其组分按质量百分数配比为:PC树脂40%~60%、ABS树脂10%~40%、玻璃纤维5%~20%、纳米碳酸钙复合微粒2%~8%、阻燃母粒2%~8%、相容剂1%~3%、抗氧剂0.1%~0.5%、分散剂0.5%~1%。
所述的PC树脂为双酚A型聚碳酸酯。
所述的ABS树脂为丙烯腈-丁二烯-苯乙烯共聚物。
所述的玻璃纤维为表面经过硅烷偶联剂处理后的无碱短切玻璃纤维。
所述的纳米碳酸钙复合微粒为表面接枝丙烯腈和醋酸乙烯酯双单体的纳米碳酸钙复合微粒。
所述的阻燃母粒是由PC树脂30wt%、聚二甲基硅氧烷(PDMS)60wt%、苯磺酰基苯磺酸钾(KSS)3wt%、纳米聚四氟乙烯(PTFE)3wt%和季戊四醇硬脂酸酯(PETS)4wt%组成而制得的阻燃母粒。
所述相容剂为苯乙烯-马来酸酐-丙烯酸缩水酯三元共聚物(GMA-g-SMA)、马来酸酐接枝ABS(ABS-g-MAH)、马来酸酐接枝聚乙烯(PE-g-MAH)、马来酸酐接枝聚丙烯(PP-g-MAH)中的一种。
所述的抗氧剂为质量比1:2的受阻酚抗氧剂1076与亚磷酸酯抗氧剂168的复配物。
所述的分散剂为EVA蜡、TAS-2A、EBS中的一种。
上述的玻纤增强阻燃改性PC/ABS合金的制备方法,包括以下步骤:
(1)、将PC树脂在鼓风干燥机中于110℃~130℃温度下干燥3~4小时,ABS树脂在80℃~90℃下干燥2~4小时,待用;
(2)、制备纳米碳酸钙复合微粒:将纳米碳酸钙75wt%用去离子水配制成(重量)10%的悬浮液,再加入CH-1A超分散剂2wt%,用高速搅拌机搅拌30~45分钟后,用稀盐酸将其pH值调至6.5~7.0,然后加入用氮气保护的反应釜中,在反应温度60℃~80℃、转速500~800r/min下,加入引发剂过硫酸铵3wt%、并搅拌5~15分钟后,开始加入单体丙烯腈10wt%,接着加入单体醋酸乙烯酯10wt%,继续搅拌和保持60℃~80℃温度下反应2~4小时后停止加热,待反应液冷却后真空抽滤,再用真空干燥箱在75℃~90℃下干燥15~20小时,即得所述的纳米碳酸钙复合微粒,待用;
(3)、制备阻燃母粒:按质量百分数含量称取PC树脂30wt%、聚二甲基硅氧烷(PDMS)60wt%、苯磺酰基苯磺酸钾(KSS)3wt%、纳米聚四氟乙烯(PTFE)3wt%和季戊四醇硬脂酸酯(PETS)4wt%,加入高速混合机中搅拌均匀后,出料加入双螺杆挤出机中挤出、造粒,即得所述的阻燃母粒,经干燥后待用;
(4)、按重量配比称取干燥的PC树脂和ABS树脂,加入高速混合机中搅拌3~5分钟,然后加入按重量配比称取步骤(2)和步骤(3)的产物,再加入按重量配比称取的相容剂、抗氧剂、分散剂,使一起搅拌5~25分钟和达到混合均匀后,出料;
(5)、将步骤(4)的物料加入双螺杆挤出机的主喂料口,同时从双螺杆挤出机的侧喂料口加入将按重量配比称取的玻璃纤维,控制加工温度在250℃~290℃,螺杆转速150~350r/min,通过双螺杆挤出机熔融共混后挤出、冷却造粒,即得本发明的玻纤增强阻燃改性PC/ABS合金。
本发明的有益效果是,本发明在兼具有PC、ABS两者优点的同时,具有拉伸强度、弯曲强度、冲击强度优良的综合力学性能,而且光泽性好、阻燃性能优异,并且符合无卤、高效、安全、环保、无熔滴和UL94 V-0级的阻燃性能,同时加工流动性好,制备方便简单,易于实现工业化生产等。
具体实施方式
下面结合具体的优选实施例来进一步说明本发明的技术方案。
一种玻纤增强阻燃改性PC/ABS合金,其组分按质量百分数配比为:PC树脂48%、ABS树脂24%、玻璃纤维12%、纳米碳酸钙复合微粒5%、阻燃母粒8%、马来酸酐接枝ABS(ABS-g-MAH)2%、质量比1:2的受阻酚抗氧剂1076与亚磷酸酯抗氧剂168的复配物0.3%、TAS-2A 0.7%。其中,所述的PC树脂为双酚A型聚碳酸酯;所述的ABS树脂为丙烯腈-丁二烯-苯乙烯共聚物;所述的玻璃纤维为表面经过硅烷偶联剂处理后的无碱短切玻璃纤维;所述的纳米碳酸钙复合微粒为表面接枝丙烯腈和醋酸乙烯酯双单体的纳米碳酸钙复合微粒;所述的阻燃母粒是由PC树脂30wt%、聚二甲基硅氧烷(PDMS)60wt%、苯磺酰基苯磺酸钾(KSS)3wt%、纳米聚四氟乙烯(PTFE)3wt%和季戊四醇硬脂酸酯(PETS)4wt%组成而制得的阻燃母粒。
制备方法:(1)、将PC树脂在鼓风干燥机中于110℃~130℃温度下干燥3~4小时,ABS树脂在80℃~90℃下干燥2~4小时,待用;(2)、制备纳米碳酸钙复合微粒:将纳米碳酸钙75wt%用去离子水配制成(重量)10%的悬浮液,再加入CH-1A超分散剂2wt%,用高速搅拌机搅拌30~45分钟后,用稀盐酸将其pH值调至6.5~7.0,然后加入用氮气保护的反应釜中,在反应温度60℃~80℃、转速500~800r/min下,加入引发剂过硫酸铵3wt%、并搅拌5~15分钟后,开始加入单体丙烯腈10wt%,接着加入单体醋酸乙烯酯10wt%,继续搅拌和保持60℃~80℃温度下反应2~4小时后停止加热,待反应液冷却后真空抽滤,再用真空干燥箱在75℃~90℃下干燥15~20小时,即得所述的纳米碳酸钙复合微粒,待用;(3)、制备阻燃母粒:按质量百分数含量称取PC树脂30wt%、聚二甲基硅氧烷(PDMS)60wt%、苯磺酰基苯磺酸钾(KSS)3wt%、纳米聚四氟乙烯(PTFE)3wt%和季戊四醇硬脂酸酯(PETS)4wt%,加入高速混合机中搅拌均匀后,出料加入双螺杆挤出机中挤出、造粒,即得所述的阻燃母粒,经干燥后待用;(4)、按重量配比称取干燥的PC树脂和ABS树脂,加入高速混合机中搅拌3~5分钟,然后加入按重量配比称取步骤(2)和步骤(3)的产物,再加入按重量配比称取的马来酸酐接枝ABS(ABS-g-MAH)、质量比1:2的受阻酚抗氧剂1076与亚磷酸酯抗氧剂168的复配物、TAS-2A,使一起搅拌5~25分钟和达到混合均匀后,出料;(5)、将步骤(4)的物料加入双螺杆挤出机的主喂料口,同时从双螺杆挤出机的侧喂料口加入将按重量配比称取的玻璃纤维,控制加工温度在250℃~290℃,螺杆转速150~350r/min,通过双螺杆挤出机熔融共混后挤出、冷却造粒,即得本发明的玻纤增强阻燃改性PC/ABS合金。
Claims (5)
1.一种玻纤增强阻燃改性PC/ABS合金,其特征在于,其组分按质量百分数配比为:PC树脂40%~60%、ABS树脂10%~40%、玻璃纤维5%~20%、纳米碳酸钙复合微粒2%~8%、阻燃母粒2%~8%、相容剂1%~3%、抗氧剂0.1%~0.5%、分散剂0.5%~1%。
2.根据权利要求1所述的玻纤增强阻燃改性PC/ABS合金,其特征在于,所述的纳米碳酸钙复合微粒为表面接枝丙烯腈和醋酸乙烯酯双单体的纳米碳酸钙复合微粒。
3.根据权利要求1所述的玻纤增强阻燃改性PC/ABS合金,其特征在于,所述的阻燃母粒是由PC树脂30wt%、聚二甲基硅氧烷(PDMS)60wt%、苯磺酰基苯磺酸钾(KSS)3wt%、纳米聚四氟乙烯(PTFE)3wt%和季戊四醇硬脂酸酯(PETS)4wt%组成而制得的阻燃母粒。
4.根据权利要求1所述的玻纤增强阻燃改性PC/ABS合金,其特征在于,所述相容剂为苯乙烯-马来酸酐-丙烯酸缩水酯三元共聚物(GMA-g-SMA)、马来酸酐接枝ABS(ABS-g-MAH)、马来酸酐接枝聚乙烯(PE-g-MAH)、马来酸酐接枝聚丙烯(PP-g-MAH)中的一种。
5.根据权利要求1所述的玻纤增强阻燃改性PC/ABS合金的制备方法,其特征在于,包括以下步骤:
(1)、将PC树脂在鼓风干燥机中于110℃~130℃温度下干燥3~4小时,ABS树脂在80℃~90℃下干燥2~4小时,待用;
(2)、制备纳米碳酸钙复合微粒:将纳米碳酸钙75wt%用去离子水配制成(重量)10%的悬浮液,再加入CH-1A超分散剂2wt%,用高速搅拌机搅拌30~45分钟后,用稀盐酸将其pH值调至6.5~7.0,然后加入用氮气保护的反应釜中,在反应温度60℃~80℃、转速500~800r/min下,加入引发剂过硫酸铵3wt%、并搅拌5~15分钟后,开始加入单体丙烯腈10wt%,接着加入单体醋酸乙烯酯10wt%,继续搅拌和保持60℃~80℃温度下反应2~4小时后停止加热,待反应液冷却后真空抽滤,再用真空干燥箱在75℃~90℃下干燥15~20小时,即得所述的纳米碳酸钙复合微粒,待用;
(3)、制备阻燃母粒:按质量百分数含量称取PC树脂30wt%、聚二甲基硅氧烷(PDMS)60wt%、苯磺酰基苯磺酸钾(KSS)3wt%、纳米聚四氟乙烯(PTFE)3wt%和季戊四醇硬脂酸酯(PETS)4wt%,加入高速混合机中搅拌均匀后,出料加入双螺杆挤出机中挤出、造粒,即得所述的阻燃母粒,经干燥后待用;
(4)、按重量配比称取干燥的PC树脂和ABS树脂,加入高速混合机中搅拌3~5分钟,然后加入按重量配比称取步骤(2)和步骤(3)的产物,再加入按重量配比称取的相容剂、抗氧剂、分散剂,使一起搅拌5~25分钟和达到混合均匀后,出料;
(5)、将步骤(4)的物料加入双螺杆挤出机的主喂料口,同时从双螺杆挤出机的侧喂料口加入将按重量配比称取的玻璃纤维,控制加工温度在250℃~290℃,螺杆转速150~350r/min,通过双螺杆挤出机熔融共混后挤出、冷却造粒,即得本发明的玻纤增强阻燃改性PC/ABS合金。
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