CN108699317A - 热塑性树脂组合物，其制备方法，以及包含其的注塑制品 - Google Patents

热塑性树脂组合物，其制备方法，以及包含其的注塑制品 Download PDF

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CN108699317A
CN108699317A CN201780013863.4A CN201780013863A CN108699317A CN 108699317 A CN108699317 A CN 108699317A CN 201780013863 A CN201780013863 A CN 201780013863A CN 108699317 A CN108699317 A CN 108699317A
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weight
compound
resin composition
thermoplastic resin
vibration welding
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CN108699317B (zh
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郑大山
韩承勋
金成龙
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LG Corp
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LG Chemical Co Ltd
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Abstract

本发明涉及一种热塑性树脂组合物，制备该热塑性树脂组合物的方法，以及包含所述热塑性树脂组合物的注塑制品。更具体地，本发明涉及一种由于包含：包含平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物的ABS类接枝共聚物；包含平均粒径为0.6μm至10μm的二烯类橡胶聚合物并且通过连续本体聚合制备的橡胶改性接枝共聚物；以及基体树脂，而具有优异的振动焊接性能以及ABS类树脂特有的抗冲击性、耐热性等的热塑性树脂组合物，以及包含所述热塑性树脂组合物的注塑制品。

Description

热塑性树脂组合物，其制备方法，以及包含其的注塑制品
技术领域
[相关申请的交叉引用]
本申请要求于2016年12月28日向韩国知识产权局提交的韩国专利申请No.10-2016-0181150的优先权益，这项申请的公开内容通过引用全部并入本申请中。
本发明涉及一种热塑性树脂组合物，该热塑性树脂组合物的制备方法，以及包含该热塑性树脂组合物的注塑制品。更具体地，本发明涉及一种由于以特定比例包含两种具有不同粒径的共轭二烯类橡胶聚合物的ABS类接枝共聚物而具有优异的振动焊接性能以及ABS类树脂特有的抗冲击性、耐热性等的热塑性树脂组合物，以及包含该热塑性树脂组合物的注塑制品。
背景技术
丙烯腈-丁二烯-苯乙烯类树脂(ABS类树脂)具有优异的加工性能、抗冲击性和耐化学性，从而被广泛用作建筑材料，汽车和摩托车等车辆的内部和外部材料，用于电气和电子产品的材料，等等。其中，用作汽车等的内部和外部材料的ABS类树脂逐渐要求具有高耐热性以及各种后加工特性。
例如，由于汽车的后灯罩通过如热焊接、振动焊接、或激光焊接等方法通过将灯罩和由聚甲基丙烯酸甲酯(PMMA)制成的透镜接合来制造，因此当用于后灯罩时，ABS类树脂应当具有与PMMA透镜的高焊接性能以及高耐热性。
同时，为了将耐热ABS类灯罩与透镜接合，过去主要使用设备成本低的热焊接方法。然而，在这种方法的情况下，最终生产的产品的外观差并且生产率低。
因此，考虑到外观和生产率优选振动焊接方法。然而，在通过振动焊接制造ABS类注塑制品的情况下，沿着ABS类注塑制品的接合表面的形状可能发生未焊透。当增加振动时间以解决这种未焊透现象时产生碎片，导致最终组装的后灯中的缺陷。为了除去这种碎片，包括附加工序，这导致生产率下降。
通过使用激光焊接方法可以解决由于碎片引起的问题。然而，在激光焊接方法中使用的激光焊接装置昂贵，从而在经济效率方面不是优选的。因此，迫切需要开发能够解决由于异物引起的缺陷问题的材料。
[相关技术文献]
[专利文献](专利文献1)KR 10-0528768 B1
发明内容
技术问题
因此，鉴于上述问题做出了本发明，本发明的一个目的是提供一种具有改善的振动焊接性能以及优异的ABS类树脂特有的机械强度、耐热性等的热塑性树脂组合物，以及其制备方法。
本发明的另一目的是提供一种由所述热塑性树脂组合物制造的注塑制品，所述注塑制品表现出改善的振动焊接性能。因此，本发明在制造用于汽车的后灯时，有助于降低制造成本、降低缺陷率、提高生产率等。
上述目的和其它目的可以通过下面描述的本公开来实现。
技术方案
根据本发明的一个方面，提供一种热塑性树脂组合物，包含：(A)20重量％至30重量％的ABS类接枝共聚物，其包含平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物；(B)2重量％至10重量％的橡胶改性接枝共聚物，其包含平均粒径为0.6μm至10μm的橡胶聚合物并且通过连续本体聚合制备；以及(C)60重量％至80重量％的基体树脂，其中，当将由上述热塑性树脂组合物制造的模塑制品振动焊接到由聚甲基丙烯酸甲酯(PMMA)制造的并且在其一个表面上包括振动焊接凸起的模塑制品上时(在230Hz的频率、480kgf的压力和1.2mm的振幅的条件下)，通过下面的数学式1计算的振动焊接性能为6以下：
[数学式1]
振动焊接性能(秒)＝T2-T1
其中，T2是与焊接凸起的方向成80°的方向上振动焊接所需要的时间，T1是与焊接凸起的方向平行的振动焊接所需要的时间。
根据本发明的另一方面，提供一种制备热塑性树脂组合物的方法，该方法包括如下步骤：捏合和挤出(A)20重量％至30重量％的ABS类接枝共聚物，其包含平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物；(B)2重量％至10重量％的橡胶改性接枝共聚物，其包含平均粒径为0.6μm至10μm的橡胶聚合物并且通过连续本体聚合制备；以及(C)60重量％至80重量％的基体树脂。
根据本发明的另一方面，提供一种通过注塑所述热塑性树脂制造的注塑制品。
根据本发明的又一方面，提供一种用于汽车的后灯模块，其中，所述后灯模块通过将上述注塑制品振动焊接到由PMMA制成的透镜上而制造。
有益效果
从前文显而易见，本发明有利地提供一种具有改善的振动焊接性能同时保持耐热ABS类树脂特有的机械强度和耐热性的热塑性树脂组合物，以及由该热塑性树脂组合物制造的注塑制品。
此外，根据本发明的注塑制品具有提高的振动焊接性能，从而在制造用于汽车的后灯模块时有助于降低制造成本、提高产品质量和提高生产率。
具体实施方式
下文中，详细地描述本公开的热塑性树脂组合物。
本发明的热塑性树脂组合物包含(A)20重量％至30重量％的ABS类接枝共聚物，其包含平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物；(B)2重量％至10重量％的橡胶改性接枝共聚物，其包含平均粒径为0.6μm至10μm的橡胶聚合物并且通过连续本体聚合制备；以及(C)60重量％至80重量％的基体树脂，其中，当将由上述热塑性树脂组合物制造的片材(宽度130mm，长度130mm)振动焊接到由聚甲基丙烯酸甲酯(PMMA)制成的并且在其一个表面上包括振动焊接凸起的片材(宽度130mm，长度130mm)上时(在230Hz的频率、480kgf的压力和1.2mm的振幅的条件下)，通过下面的数学式1计算的振动焊接性能为6以下：
[数学式1]
振动焊接性能(秒)＝T2-T1
其中，T2是与焊接凸起的方向成80°的方向上振动焊接所需要的时间，T1是与焊接凸起的方向平行的振动焊接所需要的时间。
在另一实施方案中，本公开的热塑性树脂组合物包含(A)20重量％至30重量％的ABS类接枝共聚物，其包含平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物；(B)2重量％至10重量％的橡胶改性接枝共聚物，其包含平均粒径为0.6μm至10μm的橡胶聚合物并且通过连续本体聚合制备；以及(C)60重量％至80重量％的基体树脂，其中，所述平均粒径为0.6μm至10μm的橡胶聚合物与所述平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物的重量比为1:15至1:2或者1:13至1:5。
下文中，详细地描述本公开的热塑性树脂组合物中包含的各个组分。
(A)包含平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物的ABS类接枝共聚物
所述ABS类接枝共聚物(A)是通过用芳香族乙烯基化合物以及乙烯基氰化合物接枝平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物(下文中称为“小直径橡胶聚合物”)而制备的共聚物。
在本公开中，所述共轭二烯类橡胶聚合物是指具有双键和单键交替排列的结构的共轭化合物的聚合物。
例如，所述共轭二烯类橡胶聚合物可以包括丁二烯聚合物、丁二烯-苯乙烯共聚物、丁二烯-丙烯腈共聚物、乙烯-丙烯共聚物以及由其衍生的聚合物中的一种或多种。优选地，所述共轭二烯类橡胶聚合物是丁二烯聚合物或者丁二烯-苯乙烯共聚物。
在本公开中，表述“由其衍生的聚合物”是指通过聚合在原始聚合物中不包含的单体化合物或聚合物制备的聚合物，或通过聚合共轭化合物的衍生物制备的聚合物。
在本公开中，表述“衍生物”是指用其它原子或原子团例如卤素或烷基取代原始化合物中的氢原子或原子团的化合物。
所述小直径橡胶聚合物的平均粒径可以为，例如0.25μm至0.35μm、0.27μm至0.35μm、或0.28μm至0.32μm。在此范围内，最终模塑制品具有优异的机械性能(如冲击强度)和表面特性。
在本公开中，平均粒径可以根据动态光散射法使用Nicomp 380装置测量。
所述ABS类接枝共聚物(A)可以包含，例如，40重量％至70重量％的小直径橡胶聚合物、12重量％至35重量％的芳香族乙烯基化合物和6重量％至25重量％的乙烯基氰化合物。在此范围内，如机械强度、加工性能和耐热性的性能优异。
在另一实施方案中，所述ABS类接枝共聚物(A)可以包含45重量％至68重量％的小直径橡胶聚合物、14重量％至35重量％的芳香族乙烯基化合物和6重量％至20重量％的乙烯基氰化合物。在此范围内，如耐热性和机械强度的性能的平衡优异。
在另一实施方案中，所述ABS类接枝共聚物(A)可以包含48重量％至65重量％的小直径橡胶聚合物、20重量％至35重量％的芳香族乙烯基化合物和7重量％至17重量％的乙烯基氰化合物。在这种情况下，如耐热性和机械强度的性能优异。
在本公开中，所述芳香乙烯基化合物可以是，例如选自苯乙烯、α-甲基苯乙烯、对甲基苯乙烯和乙烯基甲苯中的一种或多种。优选地，所述芳族乙烯基化合物包括苯乙烯。
在本公开中，所述乙烯基氰化合物可以是，例如，选自丙烯腈、甲基丙烯腈和乙基丙烯腈中的一种或多种。优选地，所述乙烯基氰化合物包括丙烯腈。
在一个具体实施方案中，所述ABS类接枝共聚物(A)可以是小直径丁二烯橡胶聚合物-苯乙烯-丙烯腈共聚物。在这种情况下，最终产品具有优异的性能。
基于所述ABS类接枝共聚物(A)、所述橡胶改性接枝共聚物(B)以及所述基体树脂(C)的总重量，所述ABS类接枝共聚物(A)的含量优选为20重量％至30重量％、22重量％至30重量％或23重量％至27重量％。
(B)包含平均粒径为0.6μm至10μm的橡胶聚合物并且通过连续本体聚合制备的橡胶改性接枝共聚物
所述橡胶改性接枝共聚物(B)是通过用芳香族乙烯基化合物以及乙烯基氰化合物接枝平均粒径为0.6μm至10μm的共轭二烯类橡胶聚合物(下文中称为“大直径橡胶聚合物”)而制备的共聚物。
所述大直径橡胶聚合物的平均粒径可以为，例如0.6μm至10μm、0.6μm至8μm、0.65μm至5μm、0.65μm至3μm、5μm至10μm、或6μm至9μm。在此范围内，所述热塑性树脂组合物的机械强度优异并且其振动焊接性能得到改善。
所述橡胶改性接枝共聚物(B)可以包含，例如，5重量％至20重量％的大直径橡胶聚合物、50重量％至70重量％的芳香族乙烯基化合物和10重量％至30重量％的乙烯基氰化合物。在此范围内，如机械强度和耐热性的性能优异并且可以提高振动焊接时的焊接性能。
在另一实施方案中，所述橡胶改性接枝共聚物(B)可以包含8重量％至15重量％的大直径橡胶聚合物、52重量％至75重量％的芳香族乙烯基化合物和12重量％至35重量％的乙烯基氰化合物。在此范围内，如机械强度和耐热性的性能优异，并且由于提高的焊接性能，降低了后加工中的缺陷率并提高了生产率。
所述芳香族乙烯基化合物和乙烯基氰化合物可以包含与上述ABS类接枝共聚物(A)中包含的那些化合物相同的化合物。
在一个具体实施方案中，所述橡胶改性接枝共聚物(B)可以是大直径丁二烯橡胶聚合物-苯乙烯-丙烯腈共聚物。在这种情况下，最终的产品具有优异的性能并且其振动焊接性能得到改善。
基于所述ABS类接枝共聚物(A)、所述橡胶改性接枝共聚物(B)以及所述基体树脂(C)的总重量，所述橡胶改性的接枝共聚物(B)的含量优选为2重量％至10重量％、3重量％至10重量％或3重量％至7重量％。所述ABS类接枝共聚物(A)与所述橡胶改性接枝共聚物(B)的重量比优选为1:3至1:10、更优选为1:5至1:9。在此范围内，最终的模塑制品具有优异的性能平衡和改善的振动焊接性能。
基于本公开的热塑性树脂组合物的总重量，所述ABS类接枝共聚物(A)和橡胶改性接枝共聚物(B)的总含量优选为20重量％至40重量％或25重量％至35重量％。在此范围内，性能平衡和加工性能优异并且振动焊接性能得到改善。
此外，在本公开的热塑性树脂组合物中包含的大直径橡胶聚合物与小直径橡胶聚合物的重量比优选为1:15至1:3或1:13至1:6。在此范围，振动焊接性能得到改善而不会降低ABS类树脂特有的机械强度、加工性能、耐热性等，从而制造质量优异的模塑制品。
(C)基体树脂
所述基体树脂可以是在本领域中已知的耐热苯乙烯类树脂。例如，所述基体树脂可以包括α-烷基苯乙烯-芳香族乙烯基化合物-乙烯基氰化合物共聚物、α-烷基苯乙烯-乙烯基氰化合物共聚物、马来酰亚胺化合物-芳香族乙烯基化合物共聚物、或者它们的全部。当在基体树脂中包含耐热苯乙烯类树脂时，所述热塑性树脂组合物具有优异的机械强度和优异的加工性能和耐热性。
在本公开中，在α-烷基苯乙烯-芳香族乙烯基化合物-乙烯基氰化合物共聚物中的芳香族乙烯基化合物不是α-烷基苯乙烯。
所述耐热苯乙烯类树脂的玻璃化转变温度可以为，例如，115℃以上、或115℃至140℃。在此范围内，最终的树脂组合物具有优异的加工性能和耐热性。
在本公开中，玻璃化转变温度可以通过差示扫描量热法(DSC)测量。
所述α-烷基苯乙烯-芳香族乙烯基化合物-乙烯基氰化合物共聚物可以包含，例如，50重量％至80重量％或60重量％至75重量％的α-烷基苯乙烯；0重量％至15重量％或0重量％至10重量％的芳香族乙烯基化合物；以及20重量％至50重量％或25重量％至40重量％的乙烯基氰化合物。在这种情况下，所得树脂组合物具有优异的机械强度、耐热性等。
在本公开中，所述α-烷基苯乙烯可以是选自α-甲基苯乙烯和α-乙基苯乙烯中的一种或多种。优选地，所述α-烷基苯乙烯包括α-甲基苯乙烯。
在一个具体实施方案中，所述α-烷基苯乙烯-芳香族乙烯基化合物-乙烯基氰化合物共聚物可以是α-甲基苯乙烯-苯乙烯-丙烯腈共聚物，所述α-烷基苯乙烯-乙烯基氰化合物共聚物可以是α-甲基苯乙烯-丙烯腈共聚物，但是应该注意的是，本公开不限于此。
所述马来酰亚胺化合物-芳香族乙烯基化合物共聚物可以包含，例如，30重量％至70重量％的马来酰亚胺化合物、30重量％至60重量％的芳香族乙烯基化合物以及0重量％至10重量％的马来酸酐。在这种情况下，所得树脂组合物具有优异的机械强度等以及高耐热性。
在另一实施方案中，所述马来酰亚胺化合物-芳香族乙烯基化合物共聚物可以包含40重量％至60重量％的马来酰亚胺化合物、40重量％至55重量％的芳香族乙烯基化合物以及大于0重量％并且8重量％以下的马来酸酐。在此范围内，耐热性优异。
所述马来酰亚胺化合物可以是，例如，选自N-苯基马来酰亚胺、N-甲基马来酰亚胺、N-乙基马来酰亚胺、N-丁基马来酰亚胺和N-环己基马来酰亚胺中的一种或多种。优选地，所述马来酰亚胺化合物包括N-苯基马来酰亚胺。
在一个具体实施方案中，所述马来酰亚胺化合物-芳香族乙烯基化合物共聚物可以是N-苯基马来酰亚胺-苯乙烯-马来酸酐共聚物，但应当注意的是，本公开不限于此。
此外，所述基体树脂可以通过将芳香族乙烯基化合物-乙烯基氰化合物共聚物与耐热苯乙烯类树脂混合而制备，以改善加工性。
在一个具体实施方案中，所述基体树脂可以包含15重量％至35重量％的马来酰亚胺化合物-芳香族乙烯基化合物共聚物以及65重量％至85重量％的芳香族乙烯基化合物-乙烯基氰化合物共聚物。在这种情况下，耐热性和加工性能两者均优异。
在另一实施方案中，所述基体树脂可以包含25重量％至33重量％的马来酰亚胺化合物-芳香族乙烯基化合物共聚物以及67重量％至75重量％的芳香族乙烯基化合物-乙烯基氰化合物共聚物。在此范围内，耐热性、加工性能等优异。
所述芳香族乙烯基化合物-乙烯基氰化合物可以包含，例如，60重量％至80重量％的芳香族乙烯基化合物以及20重量％至40重量％的乙烯基氰化合物。在此范围内，所得树脂组合物具有优异的加工性能。
在一个具体实施方案中，所述芳香族乙烯基化合物-乙烯基氰化合物可以是苯乙烯-丙烯腈共聚物，但是应当注意的是，本公开不限于此。
此外，所述芳香族乙烯基化合物-乙烯基氰化合物的重均分子量优选为，例如，60,000g/mol至200,000g/mol、或80,000g/mol至180,000g/mol。在此范围内，所得树脂组合物具有改善的流动性而不会降低耐热性，从而具有优异的加工性能。
在本公开中，重均分子量可以通过将样品溶解在溶剂(例如，THF)中预处理后通过凝胶渗透色谱法测量。
根据本发明的热塑性树脂组合物通过将两种分别包含不同平均粒径的共轭二烯类橡胶聚合物的ABS类接枝共聚物与耐热基体树脂接枝混合而制备，从而具有改善的振动焊接性能，同时保持ABS类树脂特有的抗冲击性、耐热性等。
具体地，当将由所述热塑性树脂组合物制造的模塑制品振动焊接到由聚甲基丙烯酸甲酯(PMMA)制造的并且在其一个表面上包括振动焊接凸起的模塑制品上时(在230Hz的频率、480kgf的压力和1.2mm的振幅的条件下)，通过下面的数学式1计算的振动焊接性能为6以下、5.5以下、5以下、或4.5以下。
此外，根据需要，本发明的热塑性树脂组合物还可以选择性地包含本领域中已知的至少一种添加剂。
所述添加剂可以是选自，例如，润滑剂、抗氧化剂、热稳定剂、光稳定剂、着色剂、抗静电剂等中的一种或多种。
在本发明的热塑性树脂组合物的说明书中未明确描述的其它添加剂，当它们在本发明所属技术领域中通常实施的范围内时就没有特别限制，并且可以根据需要适当地选择和使用。
下文中，描述制备本公开的热塑性树脂组合物的方法。
制备本发明的热塑性树脂组合物的方法包括如下步骤：捏合和挤出(A)20重量％至30重量％的ABS类接枝共聚物，其包含平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物；(B)2重量％至10重量％的橡胶改性接枝共聚物，其包含平均粒径为0.6μm至10μm的橡胶聚合物并且通过连续本体聚合制备；以及(C)60重量％至80重量％的基体树脂。
在捏合时，根据需要还可以选择性地包含诸如润滑剂、抗氧化剂、光稳定剂、或着色剂等的添加剂。
基于100重量份的所述ABS类接枝共聚物(A)、所述橡胶改性接枝共聚物(B)和所述基体树脂的总和，所述添加剂的含量可以为0.1重量份至5重量份或0.5重量份至3重量份。在此范围内，可以表现出由于加入添加剂而产生的效果而不会降低最终产品的性能，如机械强度和耐热性。
所述捏合和挤出可以在100rpm至800rpm或150rpm至750rpm以及200℃至300℃或220℃至280℃下进行。在此范围内，提供有益的加工性能和模压性。
本公开的热塑性树脂组合物可以通过注塑工艺制造成注塑制品。所述注塑制品的热变形温度为，例如，95℃以上、或95℃至112℃，从而具有优异的耐热性。
在本公开中，热变形温度可以在18.5kgf/cm2的负载下使用厚度为1/4"的样品根据ASTM D648测量。
根据本公开的注塑制品具有优异的性能(如耐热性和抗冲击性)，从而应用于各种用途的产品。具体地，具有改善的振动焊接性能的注塑制品可以用作通过振动焊接接合后灯罩等制造的汽车后灯模块。
例如，根据本公开的注塑制品可以是用于汽车的后灯罩。通过振动焊接方法可以将所述汽车后灯罩与由PMMA制成的透镜接合，从而被制造成用于汽车的后灯模块。
具体地，通过振动焊接方法的接合工艺可以包括在由PMMA制成的上面部分的一个表面上形成振动焊接凸起，将形成振动焊接凸起的表面设置为面对由本发明的热塑性树脂制造的注塑制品(下面部分)的一个表面，使用振动焊接机熔化上面部分和下面部分之间的振动焊接凸起从而使上面部分和下面部分彼此接合。
现在，将参照下面的优选实施例来更详细地描述本发明。然而，提供这些实施例仅用于说明的目的。本领域技术人员应理解，在不偏离本发明的范围和精神的情况下，各种修改、添加和替换是可以的。因此，显然，这些修改、添加和替换在本发明的范围内。
在下面的实施例和比较例中使用的材料如下：
A)包含小直径橡胶聚合物的ABS类接枝共聚物
A1)使用由LG CHEM,LTD.制造的DP270作为包含平均粒径为0.3μm的丁二烯橡胶聚合物的ABS类接枝共聚物。
B)包含大直径橡胶聚合物的ABS类接枝共聚物
B1)使用由Nippon A&L制造的AT-08作为包含平均粒径为0.7μm的丁二烯橡胶聚合物的ABS树脂；
B2)使用由LG CHEM,LTD.制造的MA201作为包含平均粒径为1.2μm的丁二烯橡胶聚合物的ABS树脂；
B3)使用由LG CHEM,LTD.制造的MA210作为包含平均粒径为8μm的丁二烯橡胶聚合物的ABS树脂。
C)基体树脂
C1)使用由LG CHEM,LTD.制造的98UHM作为α-甲基苯乙烯-苯乙烯-丙烯腈共聚物；
C2)使用由Denka制造的MS-NB作为N-苯基马来酰亚胺-苯乙烯-马来酸酐共聚物；
C3)使用由LG CHEM,LTD.制造的92HR作为苯乙烯-丙烯腈共聚物。
[实施例]
实施例1至8和比较例1至9
在230℃和200rpm的条件下使用双螺杆挤出机通过将下面的表1和表2中的组分以其中公开的含量挤出来制备根据各个实施例1至8和比较例1至9的颗粒型树脂组合物。
注塑(230℃，150巴)所述颗粒型树脂组合物，由此制造成用于测量性能的样品。
[表1]
[表2]
[测试例]
通过下面的方法测量根据各个实施例和比较例制造的样品的性能。结果汇总在下面的表3和表4中。
1)热变形温度(HDT，g/10min)：在120℃/小时的升温速率和18.5kgf/cm2的负载的条件下使用厚度为1/4"的样品根据ASTM D648测量。
2)振动焊接性能评价：为了评价振动焊接性能，注塑具有表1中公开的组分和含量的树脂组合物，从而制造宽度为130mm、长度为130mm的平坦的下面部分。由PMMA制造上面部分以及在所述上面部分上形成振动焊接凸起。将其上包括振动焊接凸起的上面部分注塑成与平坦的下面部分相同的尺寸和形状。
将所述上面部分和下面部分安装在振动焊接机(730e,Daeyoung Ultrasonic)上，使得上面部分形成有振动焊接凸起的的表面面对下面部分的一个表面。随后，在诸如230Hz的频率、480kgf的压力、1.2mm的振幅以及1mm的深度模式等条件下测量与焊接凸起的方向平行的振动焊接所需要的时间(T1，秒)，并且在相同条件下测量与焊接凸起的方向成80°的方向上的振动焊接所需要的时间(T2，秒)。由于T2和T1之差很小，因此振动焊接性能优异。
3)悬臂梁式冲击强度(IMP，kgcm/cm)：使用厚度为1/4"的样品，根据ASTM D256测量。
4)外观评价：用肉眼评价样品的表面状态(O：优异，Δ：良好，X：差)
[表3]
[表4]
如在表3和表4中所示，可以确定，与根据比较例的样品相比，由本公开的热塑性树脂组合物制造的样品表现出优异的振动焊接性能和表面特性以及相同或者优异的冲击强度和热变形温度。
特别地，可以确定，当包含N-苯基马来酰亚胺-苯乙烯-马来酸酐共聚物作为基体树脂时，耐热性得到进一步改善，但是振动焊接性能有些下降。

Claims (14)

1.一种热塑性树脂组合物，包含：
(A)20重量％至30重量％的ABS类接枝共聚物，其包含平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物；(B)2重量％至10重量％的橡胶改性接枝共聚物，其包含平均粒径为0.6μm至10μm的橡胶聚合物并且通过连续本体聚合制备；以及(C)60重量％至80重量％的基体树脂，
其中，当将由上述热塑性树脂组合物制造的片材(宽度130mm，长度130mm)振动焊接到由聚甲基丙烯酸甲酯(PMMA)制造的并且在其一个表面上包括振动焊接凸起的片材(宽度130mm，长度130mm)上时(在230Hz的频率、480kgf的压力和1.2mm的振幅的条件下)，通过下面的数学式1计算的振动焊接性能为6以下：
[数学式1]
振动焊接性能(秒)＝T2-T1
其中，T2是与焊接凸起的方向成80°的方向上振动焊接所需要的时间，T1是与焊接凸起的方向平行的振动焊接所需要的时间。
2.根据权利要求1所述的热塑性树脂组合物，其中，所述平均粒径为0.6μm至10μm的共轭二烯类橡胶聚合物与所述平均粒径为0.25μm至0.35μm的橡胶聚合物的重量比为1:15至1:2。
3.根据权利要求1所述的热塑性树脂组合物，其中，所述ABS类接枝共聚物(A)包含40重量％至70重量％的平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物、12重量％至35重量％的芳香族乙烯基化合物和6重量％至25重量％的乙烯基氰化合物。
4.根据权利要求1所述的热塑性树脂组合物，其中，所述橡胶改性接枝共聚物(B)包含5重量％至20重量％的平均粒径为0.6μm至10μm的橡胶聚合物、50重量％至70重量％的芳香族乙烯基化合物和10重量％至30重量％的乙烯基氰化合物。
5.根据权利要求1所述的热塑性树脂组合物，其中，所述基体树脂(C)包含α-烷基苯乙烯-芳香族乙烯基化合物-乙烯基氰化合物共聚物或α-烷基苯乙烯-乙烯基氰化合物共聚物；以及马来酰亚胺化合物-芳香族乙烯基化合物共聚物中的一种或多种，其中，在所述α-烷基苯乙烯-芳香族乙烯基化合物-乙烯基氰化合物共聚物中的芳香族乙烯基化合物不是α-烷基苯乙烯。
6.根据权利要求5所述的热塑性树脂组合物，其中，所述基体树脂(C)包含15重量％至30重量％的马来酰亚胺化合物-芳香族乙烯基化合物共聚物和70重量％至85重量％的芳香族乙烯基化合物-乙烯基氰化合物共聚物。
7.根据权利要求5所述的热塑性树脂组合物，其中，所述α-烷基苯乙烯-芳香族乙烯基化合物-乙烯基氰化合物共聚物包含50重量％至80重量％的α-烷基苯乙烯、0重量％至15重量％的芳香族乙烯基化合物以及20重量％至50重量％的乙烯基氰化合物。
8.根据权利要求5所述的热塑性树脂组合物，其中，所述马来酰亚胺化合物-芳香族乙烯基化合物共聚物包含30重量％至70重量％的马来酰亚胺化合物、30重量％至60重量％的芳香族乙烯基化合物以及0重量％至10重量％的马来酸酐。
9.根据权利要求8所述的热塑性树脂组合物，其中，所述马来酰亚胺化合物为选自N-苯基马来酰亚胺、N-甲基马来酰亚胺、N-乙基马来酰亚胺、N-丁基马来酰亚胺和N-环己基马来酰亚胺中的一种或多种。
10.一种制备热塑性树脂组合物的方法，该方法包括如下步骤：捏合和挤出(A)20重量％至30重量％的ABS类接枝共聚物，其包含平均粒径为0.25μm至0.35μm的共轭二烯类橡胶聚合物；(B)2重量％至10重量％的橡胶改性接枝共聚物，其包含平均粒径为0.6μm至10μm的橡胶聚合物并且通过连续本体聚合制备；以及(C)60重量％至80重量％的基体树脂，
其中，当将由所述热塑性树脂组合物制造的模塑制品振动焊接到由聚甲基丙烯酸甲酯(PMMA)制造的并且在其一个表面上包括振动焊接凸起的模塑制品上时(在230Hz的频率、480kgf的压力和1.2mm的振幅的条件下)，通过下面的数学式1计算的振动焊接性能为6以下：
[数学式1]
振动焊接性能(秒)＝T2-T1
其中，T2是与焊接凸起方向成80°的方向上振动焊接所需要的时间，T1是与焊接凸起的方向平行的振动焊接所需要的时间。
11.通过注塑根据权利要求1至9中任意一项所述的热塑性树脂组合物制造的注塑制品。
12.根据权利要求11所述的注塑制品，其中，所述注塑制品的热变形温度为95℃以上(在120℃/小时的升温速率和18.5kgf/cm2的负载的条件下)。
13.根据权利要求11所述的注塑制品，其中，所述注塑制品为用于汽车的后灯罩。
14.一种用于汽车的后灯模块，其中，所述后灯模块通过将根据权利要求13所述的注塑制品振动焊接到由PMMA制成的透镜上而制造。
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