CN1125127C - 注塑级玻璃纤维增强聚丙烯组合物 - Google Patents

注塑级玻璃纤维增强聚丙烯组合物 Download PDF

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CN1125127C
CN1125127C CN 99113507 CN99113507A CN1125127C CN 1125127 C CN1125127 C CN 1125127C CN 99113507 CN99113507 CN 99113507 CN 99113507 A CN99113507 A CN 99113507A CN 1125127 C CN1125127 C CN 1125127C
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glass fiber
polypropylene
fiber reinforced
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CN1229814A (zh
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韩敏
杨桂生
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Shanghai Genius Advanced Materials Group Co Ltd
Hefei Genius New Materials Co Ltd
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Abstract

本发明涉及注塑级玻璃纤维增强聚丙烯组合物,它包括以下组分及含量(重量份):均聚聚丙烯500~800,玻璃纤维100~400,相容剂30~120,交联剂2~10,抗氧剂1~3,分子量调节剂1~10,本发明产品实现了玻璃纤维增强聚丙烯的高强、高模和高耐热性能,它的熔融指数可调范围较大,既适用于注塑成型尺寸较小的部件,也适合于成型尺寸较大的部件。

Description

注塑级玻璃纤维增强聚丙烯组合物
本发明涉及化学组合物技术领域,尤其涉及注塑级玻璃纤维增强聚丙烯组合物。
聚丙烯(PP)作为一种通用塑料,由于其具有优良的机械和加工性能,而倍受人们的青睐。但在做一些工程部件时,其性能就不能达到要求。把玻璃纤维加入聚丙烯树脂中可以提高材料的强度、硬度、耐热性及尺寸稳定性,可广泛应用于汽车、电器、电机、机械、家电等领域。
由于PP是非极性树脂,因此玻璃纤维表面和PP的界面结合力是很弱的。而玻纤增强PP材料的性能,主要取决于PP和玻璃纤维的界面结合力。当玻璃纤维与PP之间的结合力强时,则受外界力作用时,载荷通过PP与增强纤维的界面的剪切作用而传递给纤维,纤维承担起主要的剪切作用。结果使复合材料整体呈现出高强、高模的特征。如果两者界面结合力很差,那么纤维非但不能对基体有任何的增强作用,反而成了基体的杂质,减少了基体的体积份数,削弱了基体的强度。
本发明的目的就是为了提供一种具有高强、高模特性的注塑极玻璃纤维增强聚丙烯组合物。
本发明的目的可以通过以下方式来实现:
该组合物包括以下组分及含量(重量份):
                  均聚聚丙烯       500~800
                  玻璃纤维         100~400
                  相容剂           30~120
                  交联剂           2~10
                  抗氧剂           1~3
                  分子量调节剂     1~10
                  其它助剂         0~10
                  无机填料         0~300
上述均聚聚丙烯熔融指数(MI)为2.0~5.0g/10min,拉伸强度≥30MPa。
上述玻璃纤维为无碱玻璃纤维,其公制号数为1000~2500特克斯,直径为10~16微米。
上述相容剂采用聚丙烯与不饱和酸、酸酐接枝聚合的低聚物,其熔融指数为50~120g/10min。
上述交联剂采用双马来酰亚胺。
上述抗氧剂采用抗氧1010。
上述分子量调节剂采用含有过氧化物的调节剂。
上述其它助剂是指硬酯酸钙等热稳定剂或脱模剂等。
上述无机填料指云母、碳酸钙等无机材料。
本发明采用均聚聚丙烯作为基体树脂,加入特制的相容剂,提高了PP与玻璃纤维之间的结合性能,改善了其相容性。
本发明又采用了双马来酰亚胺作为交联剂,它既具有交联作用又具有偶联作用,它在与PP熔融挤出时,可以形成一种接枝单体,提高了PP的表面活性,使PP的一端反应基团与玻璃纤维表面形成离子键,另一端的长链与PP发生强的缠结作用,显著提高其界面作用力。
本发明还采用了一种含有过氧化物的分子量调节剂,它可使PP降解,以提高熔融指数,同时产生的自由基引发了交联剂与PP的接枝。
此外,本发明还可以含有一种或多种无机填料,如:云母、碳酸钙等,无机填料的加入除可以降低成本外,还可以在一定程度上降低玻璃纤维增强PP的翘曲。
采用以上技术手段所得到的一系列玻璃纤维增强聚丙烯材料,其拉伸、冲击强度和耐热性能比一般的玻璃纤维增强材料都有很大的提高,实现了玻璃纤维增强聚丙烯的高强、高模和高耐热性能,同时,其熔融指数可调范围较大适于注塑成型各种尺寸的部件。
下面结合实施例,对本发明作进一步详细说明:
实施例1~4:
以均聚聚丙烯为基础料,无碱玻璃纤维为增强料,PP-g-MAH为相容剂,其他共混物组分等的含量都列于表一中。将除玻璃纤维外的上述组分置于高混机中混合2~3分钟,然后将物料置于φ60(直径为60mm)的双螺杆挤出机的料斗中,在挤出过程加入玻璃纤维。螺杆入口及出口段的温度均为210℃,中间段温度为230℃,螺杆转数为240rpm。物料经水冷、切粒、干燥后注塑成标准样条,供性能测试,结果列于表二中。
实施例5~6
在实施例2、3中分别加入200、100质量份的湿法云母。其它操作,测试方法与实施例1相同。测试结果列于表二。
       表一:玻纤增强聚丙烯组合物组分及含量
 组分(重量份)  实施例1  实施例2  实施例3  实施例4
均聚聚丙烯 800 700 600 500
元碱玻纤 100 200 300 400
PP-g-MAH 100 100 100 100
双马来酰亚胺 5 5 5 5
分子量调节剂 2 2 2 2
抗氧1010 1 1 1 1
                               表二:玻纤增强聚丙烯组合物性能
  测试项目   单位   例1   例2   例3    例4    例5   例6      测试标准
熔融指数230℃,2.16kg g/10min 10.62 7.93 6.16 5.74 5.88 1.28 GB3682/83
拉伸强度 MPa 53.73 74.90 98.99 111.50 87.34 92.06 GB/T1040-92
简支梁无缺口冲击强度 KJ/m2 39.81 50.64 55.48 43.86 38.26 39.82 GB/T1043-93
简支梁缺口冲击强度 KJ/m2 8.26 12.07 14.69 15.05 11.06 10.43 GB/T1043-93
热变形温度(1.82MPa) - - 150.0 154.5 153.5 154 GB1034-89
由以上的数据可以看出,本发明的玻纤增强聚丙烯体系是一个具有高强、高模的体系,适宜于注塑成型。

Claims (9)

1.注塑级玻璃纤维增强聚丙烯组合物,其特征在于:它包括以下组分及含量(重量份):
                 均聚聚丙烯       500~800
                 玻璃纤维         100~400
                 相容剂           30~120
                 交联剂           2~10
                 抗氧剂           1~3
                 分子量调节剂     1~10
                 其它助剂         0~10
                 无机填料         0~300
2.根据权利要求1所述的组合物,其特征在于:均聚聚丙烯熔融指数(MI)为2.0~5.0g/10min,拉伸强度≥30MPa。
3.根据权利要求1或2所述的组合物,其特征在于:玻璃纤维为无碱玻璃纤维,其公制号数为1000~2500特克斯,直径为10~16微米。
4.根据权利要求3所述的组合物,其特征在于:相容剂采用聚丙烯与不饱和酸、酸酐接枝聚合的低聚物,其熔融指数为50~120g/10min。
5.根据权利要求4所述的组合物,其特征在于:交联剂采用双马来酰亚胺。
6.根据权利要求5所述的组合物,其特征在于:抗氧剂采用抗氧1010。
7.根据权利要求6所述的组合物,其特征在于:分子量调节剂采用含有过氧化物的调节剂。
8.根据权利要求1所述的组合物,其特征在于:其它助剂指硬酯酸钙、热稳定剂或脱模剂。
9.根据权利要求1所述的组合物,其特征在于:无机填料指云母、碳酸钙。
CN 99113507 1999-03-04 1999-03-04 注塑级玻璃纤维增强聚丙烯组合物 Expired - Lifetime CN1125127C (zh)

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Publication number Priority date Publication date Assignee Title
WO2004104089A1 (fr) * 2003-05-22 2004-12-02 Shanghai Genius Advanced Meterial Co., Ltd. Matiere a base d'alliage renforce de polypropylene/polyphenylether a longues fibres, sa preparation et son application
CN101875740B (zh) * 2010-03-31 2012-07-18 上海金发科技发展有限公司 一种连续玻璃纤维增强聚丙烯复合材料的制备方法
CN101781423A (zh) * 2010-04-02 2010-07-21 国家复合改性聚合物材料工程技术研究中心 玻璃纤维增强的聚丙烯树脂组合物配方及制备方法
KR20150007340A (ko) * 2012-05-22 2015-01-20 보르쥬 컴파운딩 상하이 캄파니 리미티드 낮은 뒤틀림을 갖는 성형 물품
CN103408832A (zh) * 2013-06-24 2013-11-27 深圳市科聚新材料有限公司 一种聚丙烯复合材料及其制备方法和应用
GB201506876D0 (en) 2015-04-22 2015-06-03 Uponor Innovation Ab Polyolefin pipe
CN106084494A (zh) * 2016-08-26 2016-11-09 青岛海尔新材料研发有限公司 长玻纤聚丙烯复合材料及其制备方法
CN108929485A (zh) * 2017-05-25 2018-12-04 合肥杰事杰新材料股份有限公司 一种抗蠕变聚丙烯复合材料

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