CN117050515A - 一种耐醇解玻纤增强pa/pp合金材料及其制备方法 - Google Patents
一种耐醇解玻纤增强pa/pp合金材料及其制备方法 Download PDFInfo
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Abstract
本发明公开了一种耐醇解玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA树脂30~45%、聚丙烯树脂15~25%、相容剂3~10%、改性玻璃纤维25~35%、耐醇解助剂0.5~6%、润滑剂0.2~0.7%、抗氧剂0.2~0.8%、成核剂0.05~0.3%、热稳定剂0.5~2.5%、着色剂0.5~2%。本发明还公开了上述耐醇解玻纤增强PA/PP合金材料的制备方法。本发明的玻纤增强PA/PP合金材料具有力学强度优良、耐热老化性能高和耐醇解性能优良的特点,能够满足汽车冷却系统的技术指标,而且成本低,具有很高的使用价值和经济价值。
Description
技术领域
本发明涉及PA/PP合金材料技术领域,尤其涉及一种耐醇解玻纤增强PA/PP合金材料及其制备方法。
背景技术
近年来,PA66(尼龙66)的价格不断提高,而PA6(尼龙6)和PA56(尼龙56)作为替代PA66的最佳方案,备受汽车零部件配套商和主机厂青睐。PA6和PA56在汽车零部件中,有一个应用始终无法替代PA66,这便是冷却系统中的零部件。PA6和PA56均由于其分子链结构中酰胺基团之间形成氢键的概率远小于PA66,使得材料相较于PA66吸水性较高而且耐热性较差。在冷却液的浸泡过程中,会被严重的腐蚀,导致零件的失效,甚至发生冷却液泄漏。
PP(聚丙烯)是一种广泛应用的热塑性塑料,其原料来源丰富,价格低廉,具有较好的综合性能,在塑料中占有重要地位。相对于PA,PP几乎不吸水,不受使用环境潮湿度的影响,但是PP存在强度低、耐热性差等缺点。现有的玻纤增强PP拉伸强度仅为90MPa左右,无法满足冷却系统终端拉伸强度技术指标>110MPa的要求,且在1.8MPa的压力下热变形温度仅为140℃左右,不能满足150℃/1000h的长期热老化性能需求。用PP对PA6和PA56进行共混改性,可望改善PA6和PA56吸水性高的缺点,拓宽PA6和PA56在汽车冷却系统中零部件周边的应用,且PA/PP合金密度低于PA66,有助于汽车轻量化的发展。更为重要的是PP和PA6、PA56市场价格远低于PA66,具有非常高的经济价值。
专利CN104559153A公开了一种高耐热老化的玻纤增强PA/PP合金材料,选择铜离子卤化物作为热稳定剂,材料满足150℃/1000h热老化要求,但难以满足汽车水室及发动机周边越来越高的温度要求,而且其拉伸强度仅能达到65MPa,力学性能和在高温条件下的耐醇解性能不足;专利CN111454571A公开了一种接枝有马来酸酐的PP作为第三组份而制得的玻纤增强PA56/PP合金材料,但是拉伸强度仅能达到60MPa,难以满足汽车冷却系统周边对强度的应用要求;专利CN111117230A提供了一种耐汽车冷却液腐蚀的聚酰胺56组合物,通过添加长链聚酰胺的方式提高聚酰胺56的耐冷却液性能,但是长链聚酰胺的成本较高,使得材料经济性较低。
因此,开发一种成本低,具有优良的力学强度、耐热老化性能,且在高温条件下的耐醇解性能好的PA/PP合金材料应用于汽车冷却系统,具有很高的应用价值。
发明内容
基于背景技术存在的技术问题,本发明提出了一种耐醇解玻纤增强PA/PP合金材料及其制备方法。
本发明提出了一种耐醇解玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA树脂30~45%、聚丙烯树脂15~25%、相容剂3~10%、改性玻璃纤维25~35%、耐醇解助剂0.5~6%、润滑剂0.2~0.7%、抗氧剂0.2~0.8%、成核剂0.05~0.3%、热稳定剂0.5~2.5%、着色剂0.5~2%;上述组分的质量百分比之和为100%;
所述改性玻璃纤维是由表面浸润剂对玻璃纤维进行表面改性得到,所述表面浸润剂为乙烯-马来酸酐共聚物或者水基环氧树脂浸润剂;
所述耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为(4~10):1组成。
其中,杜邦SURLYN 9910树脂是乙烯酸共聚物的离聚物;布吕格曼H3337抗水解剂是由铜化合物的抗氧剂、增效剂成核剂和抗水解保护润滑剂(脂肪酸盐)的增效混合物。
优选地,所述PA树脂为PA56、PA6或其组合。
优选地,所述PA56的相对粘度为2.5~2.9,PA6的相对粘度为2.65~3.05。
优选地,所述聚丙烯树脂为均聚聚丙烯树脂,在230℃/2.16kg条件下的熔体流动速率为3~8g/10min,抗张强度为40~45MPa。
优选地,所述玻璃纤维为短切玻纤,直径为7~11μm。
优选地,所述相容剂为PP-g-MAH、双酚A型环氧树脂或其组合。
优选地,所述润滑剂为PETS、OP蜡、硅硐粉、硅油、芥酸酰胺中的至少一种。
优选地,所述成核剂为CAV102成核剂、P22成核剂或其组合,其中P22成核剂为布吕格曼公司生产的以尼龙22为主成分的尼龙成核剂,CAV102成核剂为克莱恩公司生产的褐煤酸盐类尼龙成核剂。
优选地,所述热稳定剂为双季戊四醇或者包含双季戊四醇的母粒。优选地,所述包含双季戊四醇的母粒以PA6为载体,母粒中双季戊四醇的含量为30~60%。热稳定剂的作用是在PA/PP合金表层形成一层“保护盾”,有效地阻隔了材料和氧气的接触,降低了高温环境中自由基的产生,从而使合金材料能在严苛的高温环境中使用。
优选地,所述抗氧剂包括主抗氧剂和辅助抗氧剂,其中主抗氧剂为受阻酚类抗氧剂、胺类抗氧剂或其组合,辅助抗氧剂为亚磷酸酯类抗氧剂;优选地,所述主抗氧剂为抗氧剂1098、抗氧剂445或其组合;优选地,所述辅助抗氧剂为S9228、抗氧剂168或其组合。
优选地,所述着色剂为黑色母;优选地,所述着色剂为炭黑黑色母、苯胺黑黑色母或其组合;优选地,所述炭黑黑色母的载体为PA6,炭黑含量为35~40%,优选为卡博特3785;优选地,所述苯胺黑黑色母为油溶性苯胺黑黑色母,优选为高莱N54/1033。
本发明还提出了一种所述的耐醇解玻纤增强PA/PP合金材料的制备方法,包括下述步骤:
S1、按质量百分比称取各原料,将PA树脂、聚丙烯树脂、相容剂、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将所述PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到耐醇解玻纤增强PA/PP合金材料。
本发明的有益效果如下:
高温冷冻液导致玻纤增强尼龙复合材料失效的主要原因是乙二醇分子破坏玻纤与尼龙材料的界面,特别是尼龙的非晶区更易被破坏从而导致复合材料性能的下降。本发明选择了直径较小的玻纤,可以增加玻纤与尼龙树脂的界面结合力,并采用浸润剂对玻纤表面进行改性,进一步增强了玻纤和尼龙材料界面结合强度,从而提高材料的拉伸强度且进一步改善材料的耐醇解性能;通过加入成核剂可以提高尼龙的结晶度,加入聚丙烯可以降低尼龙材料的吸水性;加入surlyn树脂和H3337复配组成的耐醇解助剂,其中surlyn树脂由于锌和钠或锂阳离子与尼龙树脂中的酰胺基团和胺基之间的相互作用,增强了混合物的相容性,而H3337是将润滑剂、成核剂、热稳定剂组成的混合物,两者的协同作用可以显著改善材料在高温条件下的冷冻液中的耐醇解性;通过热稳定剂在PA/PP合金表层形成一层“保护盾”,有效地阻隔了材料和氧气的接触,极大的提高了材料在长期高温下的性能保持率。综上,本发明的玻纤增强PA/PP合金材料具有力学强度优良、耐热老化性能高和耐醇解性能优良的特点,能够满足汽车冷却系统的技术指标,而且成本低,具有很高的使用价值和经济价值。
具体实施方式
下面,通过具体实施例对本发明的技术方案进行详细说明。
下述实施例和对比例中:
PA56树脂购自上海凯赛生物产业有限公司,牌号Ecopent-1273,熔点:251℃,熔融焓为47kj/mol,相对粘度根据乌氏粘度计浓硫酸法25℃测量为2.7;PA6树脂购自岳阳巴陵石化化工化纤有限公司,牌号YH800,熔点:221℃,熔融焓为50kj/mol,相对粘度根据乌氏粘度计浓硫酸法25℃测量为2.85;PP树脂为均聚聚丙烯树脂,购自韩华道达尔,牌号HJ730,在230℃/2.16kg下的熔体流动速率为5g/10min,抗张强度为42.2MPa。其中,热性能(熔点Tm),熔融焓:ISO标准11357-1(2016),颗粒,差示扫描量热法(DSC)以10℃/min的加热速率执行。
马来酸酐接枝聚丙烯(PP-MAH)购自佳易容聚合物(上海)有限公司,牌号CMG9801,其中马来酸酐接枝率为0.5-1.0%,在190℃/2.16kg下熔体流动速率为35-70g/10min;双酚A型环氧树脂为E-03型,购自上海奥克化学有限公司。
改性玻璃纤维为高强高模耐醇解玻纤,在玻纤生产过程中通过对玻纤表面采用乙烯-马来酸酐共聚物进行表面处理,赋予玻纤以及复合材料的耐水解功能购自山东泰山玻纤,牌号:HMG-10-435TM,直径10μm;普通玻璃纤维表面经聚氨酯浸润剂处理,购自山东泰山玻纤,牌号为ECS-10-T435N。
热稳定剂购自德国Brüggemann公司,牌号HP-1805。
成核剂购自德国Brüggemann公司,牌号P22。
抗氧剂为受阻酚类抗氧剂、亚磷酸酯类抗氧剂按质量比为1:1组成的混合物;其中,受阻酚类抗氧剂为4,4’-双(α,α-二甲基苄基)二苯胺,购自圣莱科特,牌号为445;亚磷酸酯类抗氧剂为DOVER的抗氧剂S9228
润滑剂为硅酮粉、褐煤蜡按质量比为1:1组成的混合物,其中硅酮粉购自成都思立可科技,牌号LYSI-300C,褐煤蜡购自科莱恩化工,牌号WAX-OP。
着色剂为油溶性苯胺黑色母,购自高莱,牌号N54/1033。
实施例1
一种耐醇解玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA6树脂40.5%、PP树脂20%、PP-MAH 5%、改性玻璃纤维30%、耐醇解助剂0.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;其中,耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为4:1组成;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA6树脂、PP树脂、PP-MAH、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到耐醇解玻纤增强PA/PP合金材料。
实施例2
一种耐醇解玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA56树脂40.5%、PP树脂20%、PP-MAH 5%、改性玻璃纤维30%、耐醇解助剂0.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;其中,耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为4:1组成;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA56树脂、PP树脂、PP-MAH、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到耐醇解玻纤增强PA/PP合金材料。
实施例3
一种耐醇解玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA56树脂35%、PP树脂20%、PP-MAH 5%、双酚A型环氧树脂1%、改性玻璃纤维30%、耐醇解助剂5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;其中,耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为9:1组成;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA56树脂、PP树脂、PP-MAH、双酚A型环氧树脂、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到耐醇解玻纤增强PA/PP合金材料。
实施例4
一种耐醇解玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA6树脂34.5%、PP树脂20%、PP-MAH 5%、双酚A型环氧树脂1%、改性玻璃纤维30%、耐醇解助剂5.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;其中,耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为10:1组成;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA6树脂、PP树脂、PP-MAH、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到耐醇解玻纤增强PA/PP合金材料。
实施例5
一种耐醇解玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA6树脂14.5%、PA56树脂20%、PP树脂20%、PP-MAH 5%、改性玻璃纤维30%、耐醇解助剂5.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;其中,耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为10:1组成;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA6树脂、PA56树脂、PP树脂、PP-MAH、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到耐醇解玻纤增强PA/PP合金材料。
对比例1
一种玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA6树脂65.5%、改性玻璃纤维30%、耐醇解助剂0.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;其中,耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为4:1组成;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA6树脂、PP-MAH、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到玻纤增强PA/PP合金材料。
对比例2
一种玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA56树脂65.5%、改性玻璃纤维30%、耐醇解助剂0.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;其中,耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为4:1组成;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA56树脂、PP-MAH、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到玻纤增强PA/PP合金材料。
对比例3
一种玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA6树脂40.5%、PP树脂20%、PP-MAH 5%、普通玻纤ECS-10-T435N 30%、耐醇解助剂0.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;其中,耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为4:1组成。
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA6树脂、PP树脂、PP-MAH、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,普通玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到玻纤增强PA/PP合金材料。
对比例4
一种玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA6树脂42.5%、PP树脂20%、PP-MAH 5%、改性玻璃纤维30%、耐醇解助剂0.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、着色剂1%;其中,耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为4:1组成;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA6树脂、PP树脂、PP-MAH、抗氧剂、润滑剂、耐醇解助剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到玻纤增强PA/PP合金材料。
对比例5
一种耐醇解玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA6树脂40.5%、PP树脂20%、PP-MAH 5%、改性玻璃纤维30%、杜邦SURLYN 9910树脂0.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA6树脂、PP树脂、PP-MAH、抗氧剂、润滑剂、杜邦SURLYN 9910树脂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到耐醇解玻纤增强PA/PP合金材料。
对比例6
一种耐醇解玻纤增强PA/PP合金材料,包括下述质量百分比的原料:PA6树脂40.5%、PP树脂20%、PP-MAH 5%、改性玻璃纤维30%、布吕格曼H3337抗水解剂0.5%、润滑剂0.5%、抗氧剂0.4%、成核剂0.1%、热稳定剂2%、着色剂1%;
其制备方法包括下述步骤:
S1、按质量百分比称取各原料,将PA6树脂、PP树脂、PP-MAH、抗氧剂、润滑剂、布吕格曼H3337抗水解剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到耐醇解玻纤增强PA/PP合金材料。
试验例
测试实施例和对比例制得的玻纤增强PA/PP合金材料的性能,方法如下:
力学性能样条的制造:将实施例及对比例制备的上述材料在真空转鼓干燥箱中于110℃干燥8h,使水分含量在500-800ppm之间。在温度为270℃的条件下注塑成标准力学性能样条,将注塑好的力学性能样条在实验室标准环境中(23℃、50%RH)放置24h,状态调节后进行力学性能测试。
拉伸强度按ISO527-2方法测试,样条尺寸:170*10*4mm,试验速度5mm/min。断裂伸长率按ISO527-2方法测试,样条尺寸:170*10*4mm,试验速度1mm/min。弯曲强度及模量按ISO178-1方法测试,样条尺寸:80*10*4mm,试验速度2mm/min。缺口冲击性能按ISO 180方法测试,样条尺寸:80*10*4mm。
吸水率=(m2-m1)/m1
其中:m1为材料在干燥条件下的重量(g)
m2为材料在上述条件下平衡吸湿后的重量(g)
测试材料耐醇解性能:
(1)将标准ISO弯曲样条放置在装有乙二醇的配备聚四氟乙烯消解罐内衬以及304不锈钢罐体的反应釜中,然后将反应釜放置在135℃的烘箱中,持续放置48h后将样条取出,观察样条表面是否出现裂纹。
(2)将标准ISO拉伸及弯曲样条放置在配备聚四氟乙烯消解罐内衬以及304不锈钢罐体的反应釜中,倒入长效冷却液(乙二醇:水=1:1),然后将反应釜放置在135℃的烘箱中,持续放置1000h后将样条取出,按ISO527-2方法测试材料醇解后的拉伸强度,按ISO178-1方法测试材料的弯曲强度。
测试材料耐老化性能:
将标准ISO拉伸样条放置150℃/180℃的强制换气烘箱中,持续放置1000h后将样条取出,按ISO527-2方法测试材料热老化后的拉伸强度。
测试结果如表1和表2所示:
表1实施例制得的玻纤增强PA/PP合金材料的性能
性能 | 实施例1 | 实施例2 | 实施例3 | 实施例4 | 实施例5 |
密度(g/cm3) | 1.261 | 1.263 | 1.250 | 1.253 | 1.254 |
吸水率(%) | 1.32 | 1.44 | 1.21 | 122 | 1.23 |
拉伸强度(MPa) | 145.8 | 157.2 | 150.1 | 140.4 | 146.2 |
断裂伸长率(%) | 3.5 | 3.1 | 3.6 | 3.9 | 3.6 |
弯曲强度(MPa) | 215.2 | 232.4 | 220.6 | 204.7 | 214.1 |
弯曲模量(MPa) | 8010 | 8800 | 8250 | 7937 | 8042 |
Charry缺口冲击强度(kj/m2)23℃ | 14.3 | 12.4 | 14.1 | 16.1 | 15.1 |
Charry缺口冲击强度(kj/m2)-30℃ | 12.5 | 10.2 | 12.3 | 13.7 | 12.9 |
135℃-48H醇解后是否开裂 | 否 | 否 | 否 | 否 | 否 |
135℃冷却液老化后拉伸强度(MPa) | 101.2 | 105.1 | 109.3 | 110.1 | 105.2 |
135℃冷却液老化后弯曲强度(MPa) | 104.4 | 107.2 | 113.4 | 111.3 | 112.4 |
150℃-1000H老化后拉伸强度(MPa) | 119.4 | 123.2 | 117.5 | 111.6 | 114.7 |
180℃-1000H老化后拉伸强度(MPa) | 109.2 | 110.4 | 105.4 | 102.1 | 104.3 |
表2对比例制得的玻纤增强PA/PP合金材料的性能
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。
Claims (10)
1.一种耐醇解玻纤增强PA/PP合金材料,其特征在于,包括下述质量百分比的原料:PA树脂30~45%、聚丙烯树脂15~25%、相容剂3~10%、改性玻璃纤维25~35%、耐醇解助剂0.5~6%、润滑剂0.2~0.7%、抗氧剂0.2~0.8%、成核剂0.05~0.3%、热稳定剂0.5~2.5%、着色剂0.5~2%;上述组分的质量百分比之和为100%;
所述改性玻璃纤维是由表面浸润剂对玻璃纤维进行表面改性得到,所述表面浸润剂为乙烯-马来酸酐共聚物或者水基环氧树脂浸润剂;
所述耐醇解助剂由杜邦SURLYN 9910树脂和布吕格曼H3337抗水解剂按质量比为(4~10):1组成。
2.根据权利要求1所述的耐醇解玻纤增强PA/PP合金材料,其特征在于,所述PA树脂为PA56、PA6或其组合。
3.根据权利要求1所述的耐醇解玻纤增强PA/PP合金材料,其特征在于,所述PA56的相对粘度为2.5~2.9,PA6的相对粘度为2.65~3.05。
4.根据权利要求1所述的耐醇解玻纤增强PA/PP合金材料,其特征在于,所述聚丙烯树脂为均聚聚丙烯树脂,在230℃/2.16kg条件下的熔体流动速率为3~8g/10min,抗张强度为40~45MPa。
5.根据权利要求1所述的耐醇解玻纤增强PA/PP合金材料,其特征在于,所述玻璃纤维为短切玻纤,直径为7~11μm。
6.根据权利要求1所述的耐醇解玻纤增强PA/PP合金材料,其特征在于,所述相容剂为PP-g-MAH、双酚A型环氧树脂或其组合。
7.根据权利要求1所述的耐醇解玻纤增强PA/PP合金材料,其特征在于,所述润滑剂为PETS、OP蜡、硅硐粉、硅油、芥酸酰胺中的至少一种。
8.根据权利要求1所述的耐醇解玻纤增强PA/PP合金材料,其特征在于,所述成核剂为克莱恩CAV102成核剂、布吕格曼P22成核剂或其组合。
9.根据权利要求1所述的耐醇解玻纤增强PA/PP合金材料,其特征在于,所述热稳定剂为双季戊四醇或者包含双季戊四醇的母粒。
10.一种如权利要求1~9所述的耐醇解玻纤增强PA/PP合金材料的制备方法,其特征在于,包括下述步骤:
S1、按质量百分比称取各原料,将PA树脂、聚丙烯树脂、相容剂、抗氧剂、润滑剂、耐醇解助剂、热稳定剂、成核剂和着色剂搅拌均匀,得到PA/PP混合料;
S2、将所述PA/PP混合料加入双螺杆挤出机的主喂料口,改性玻璃纤维加入双螺杆挤出机的侧喂料口,经过熔融挤出、造粒、干燥,得到耐醇解玻纤增强PA/PP合金材料。
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