CN103182812A - 塑料复合体及其制造方法 - Google Patents
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Abstract
一种塑料复合体,包括第一塑件及层叠于该第一塑件上的第二塑件,所述第一塑件的材质为热塑性树脂,所述第二塑件的材质为热固性树脂;所述塑料复合体还包括于第一塑件与第二塑件之间的粘结层,所述粘结层主要由胺基硅烷偶联剂构成。本发明还提供一种制造上述塑料复合体的制造方法。
Description
技术领域
本发明涉及一种塑料复合体及其制造方法。
背景技术
现有技术,通过如下方式形成具有镶嵌件的塑料复合体:先提供一第一塑件,将镶嵌件固结于所述第一塑件的表面;再将所述第一塑件置于一注塑模具内;之后,在高温高压的条件下向模具内注入熔融的热塑性树脂,冷却模具后在第一塑件表面结合一透明或半透明状的第二塑件。透过所述第二塑件可看到形成于第一塑件表面的图纹,同时还可避免所述图纹受外界的侵蚀与磨损。然,在上述高温高压的注塑过程中,产生的较大的冲刷力,易于使镶嵌件破损、增大塑料复合体的内应力。
发明内容
有鉴于此,有必要提供一种内应力较低的塑料复合体。
此外,还有必要提供一种上述塑料复合体的制造方法。
一种塑料复合体,包括第一塑件及层叠于该第一塑件上的第二塑件,所述第一塑件的材质为热塑性树脂,所述第二塑件的材质为热固性树脂;所述塑料复合体还包括于第一塑件与第二塑件之间的粘结层,所述粘结层主要由胺基硅烷偶联剂构成。
一种塑料复合体的制造方法,包括以下步骤:
提供一第一塑件,该第一塑件的材质为热塑性树脂;
提供一粘结剂,所述粘结剂中含有胺基硅烷偶联剂及去离子水;
采用喷涂的方式,在所述第一塑件上喷涂一层粘结剂,再将第一塑件进行烘烤处理,于所述第一塑件上形成一粘结层;
提供一模具,该模具包括上模、下模及模芯,该上模开设有一模穴,将所述第一塑件定位于该模芯上,闭合该上模与该下模并于该模穴内形成一模腔;
在常压下,向该模腔内灌注液态的热固性塑料,加热该模具,所述热固性塑料固化后于该第一塑件上形成一第二塑件,所述第二塑件为透明状或半透明状。
本发明所述塑料复合体的制造方法有如下优点:
1. 所述第二塑件在较低的压力条件下成型,可降低因模内压力变化带给第一塑件的冲刷力,进而降低第一塑件与第二塑件之间的内应力。
2. 所述胺基硅烷偶联剂在去离子水中,将发生水解生成-Si(OH)3基团。在所述烘烤过程中,所述-Si(OH)3基团将与第一塑件表面的活性H原子或玻璃纤维反应形成-Si-O-Si-化学键;注塑形成所述第二塑件后,所述胺基硅烷偶联剂的-NH2将与热固性树脂中的链状分子缠绕在一起;如此,粘结层通过一端与第一塑件10表面的活性H原子反应生成-Si-O-Si-化学键,另一端与第二塑件的热固性树脂中的链状分子缠绕在一起,进而提高了所述第一塑件与第二塑件的结合强度。
附图说明
图1为本发明一较佳实施方式塑料复合体的剖视图。
图2为本发明另一较佳实施方式塑料复合体100a的立体图。
图3是图2所示塑料复合体100a沿ΙΙΙ-ΙΙΙ线的剖视图。
图4为本发明另一较佳实施方式塑料复合体100b的剖视图。
主要元件符号说明
| 塑料复合体 | 100,100a,100b |
| 第一塑件 | 10 |
| 粘结层 | 30 |
| 图案层 | 40 |
| 第二塑件 | 50 |
如下具体实施方式将结合上述附图进一步说明本发明。
具体实施方式
请参阅图1,本发明一较佳实施例的塑料复合体100包括一第一塑件10、依次形成于该第一塑件10上的粘结层30及第二塑件50。
所述第一塑件10的材质可为聚碳酸酯(PC)、聚甲基丙烯酸甲酯(PMMA)、聚碳酸酯(PC)与聚对苯二甲酸乙二醇酯(PET)的共混合物、聚酰胺(PA)、丙烯腈-苯乙烯-丁二烯共聚物树脂(ABS)及聚氨酯(PU)等热塑性树脂中的任一种。优选地,所述热塑性树脂中还添加有玻璃纤维。所述第一塑件10的厚度为0.6~1mm。
所述粘结层30为无色透明状,其通过喷涂的方式形成于所述第一塑件10上。所述粘结层30主要由胺基硅烷偶联剂构成。本实例中,所述胺基硅烷偶联剂的主要成分为γ-氨丙基三乙氧基硅烷。
所述第二塑件50可为透明状或半透明状。用以形成所述第二塑件50的材料为环氧树脂、酚醛树脂、热固性的聚氨酯(PU)及有机硅树脂等热固性树脂中的任一种。所述第二塑件50的厚度为0.6~1.2mm。
结合参阅图2及图3,本发明另一较佳实施例,所述塑料复合体100a还包括形成于所述粘结层30与第一塑件10之间的一图案层40。所述图案层40可形成为文字、图案、标识或标签等。所述图案层40可通过印刷或喷涂等方式形成于。所述图案层40还可为薄膜、薄片或薄板等镶嵌件。所述镶嵌件的材质可为金属、塑料或陶瓷等。所述镶嵌件的厚度为0.4~1.0mm。
结合参阅图4,本发明第三较佳实施例,所述塑料复合体100b还一图案层40,与塑料复合体100a不同的是所述图案层40形成于粘结层30于第二塑件50之间。
制造上述塑料复合体100可参照如下步骤进行:
提供一第一塑件10,该第一塑件10通过注塑的方式形成。该第一塑件的材质可为聚碳酸酯(PC)、聚甲基丙烯酸甲酯(PMMA)、聚碳酸酯(PC)与聚对苯二甲酸乙二醇酯(PET)的共混合物、聚酰胺(PA)、丙烯腈-苯乙烯-丁二烯共聚物树脂(ABS)及聚氨酯(PU)等热塑性树脂中的任一种。优选地,所述热塑性树脂中还添加有玻璃纤维。所述第一塑件10的厚度为0.6~1mm。
提供一粘结剂。所述粘结剂的主要成分为胺基硅烷偶联剂、乙醇及去离子水。本实例中,所述粘结剂中,胺基硅烷偶联剂的质量百分含量为2~5%,乙醇的质量百分含量为3~5%,余量为去离子水。所述胺基硅烷偶联剂的主要成分为γ-氨丙基三乙氧基硅烷。
所述粘结剂通过如下方法制得:以胺基硅烷偶联剂、乙醇及去离子水为原料;将2~5g的胺基硅烷偶联剂、3~5g的乙醇及90~94g的去离子水混合均匀后静置30min后,制得所述粘结剂。
采用喷涂的方式,在所述第一塑件10上形成粘结层30。形成所述粘结层30的方法如下:提供一喷涂装置(未图示),该喷涂装置包括一喷枪;采用所述喷枪在第一塑件10上形成一层雾状的粘结剂;之后,将第一塑件10置于30~50℃的温度下烘烤5~10min,于第一塑件10上形成一无色透明的粘结剂层30。
提供一模具(图未示),该模具包括上模、下模及模芯,该上模开设有一模穴,将所述第一塑件10定位于该模芯上,闭合该上模与该下模并于该模穴内形成一模腔;在常压下,向上述模腔内注射填充液态的热固性塑料,形成第二塑件50。加热模具至温度为60~100℃,待该模腔内的树脂固化后开启上模,所述热固性树脂覆盖于粘结层30形成一第二塑件50,塑料复合体100便制造完毕。成型所述第二塑件50的过程中,所述模腔内的压力约为一个大气压。
制造上述塑料复合体100a、100b可参照塑料复合体100的制作方法进行,不同的是在形成所述第二塑件50之前在所述粘结层30上粘结固定一图案层40,或在形成所述粘结层30之前在第一塑件10表面粘结固定一图案层40。成型所述第二塑件50的过程中,所述热固性树脂固化后于第一塑件10上形成一第二塑件50并覆盖所述图案层40。
所述图案层40形成为文字、图案、标识或标签等。所述图案层40可通过印刷或喷涂等方式形成于第一塑件10的表面。所述图案层40还可为薄膜、薄片或薄板等镶嵌件。所述镶嵌件的材质可为金属、塑料或陶瓷等。所述镶嵌件的厚度为0.4~1.0mm。
本发明所述塑料复合体100的制造方法有如下优点:
1. 所述第二塑件50在较低的压力、温度下成型,可降低因模内压力变化带给第一塑件10及图案层40的冲刷力,进而,可降低第一塑件10与第二塑件50之间的内应力,避免图案层40因冲刷力过大而破损。
2. 所述胺基硅烷偶联剂与去离子水及乙醇混合后,将发生水解生成-Si(OH)3基团,在所述烘烤过程中,所述-Si(OH)3基团将与第一塑件10表面的活性H原子或玻璃纤维反应形成-Si-O-Si-化学键;注塑形成所述第二塑件50后,所述胺基硅烷偶联剂的-NH2将与热固性树脂中的链状分子缠绕在一起;如此,粘结层30通过一端与第一塑件10表面的活性H原子或玻璃纤维反应形成-Si-O-Si-化学键,另一端与第二塑件50的热固性树脂中的链状分子缠绕在一起,进而提高了所述第一塑件10与第二塑件50的结合强度。
Claims (16)
1.一种塑料复合体,包括第一塑件及层叠于该第一塑件上的第二塑件,其特征在于:所述第一塑件的材质为热塑性树脂,所述第二塑件的材质为热固性树脂;所述塑料复合体还包括于第一塑件与第二塑件之间的粘结层,所述粘结层主要由胺基硅烷偶联剂构成。
2.如权利要求1所述的塑料复合体,其特征在于:所述胺基硅烷偶联剂主要成分为γ-氨丙基三乙氧基硅烷。
3.如权利要求1所述的塑料复合体,其特征在于:所述第一塑件的材质为聚碳酸酯、聚甲基丙烯酸甲酯、聚碳酸酯与聚对苯二甲酸乙二醇酯的共混合物、聚酰胺、丙烯腈-苯乙烯-丁二烯共聚物树脂及聚氨酯。
4.如权利要求1所述的塑料复合体,其特征在于:所述热塑性树脂中还添加有玻璃纤维。
5.如权利要求1所述的塑料复合体,其特征在于:所述第二塑件的材质为环氧树脂、酚醛树脂、热固性的聚氨酯或有机硅树脂。
6.如权利要求1所述的塑料复合体,其特征在于:所述第一塑件的厚度为0.6~1mm。
7.如权利要求1所述的塑料复合体,其特征在于:所述第二塑件的厚度为0.6~1.2mm。
8.如权利要求1所述的塑料复合体,其特征在于:所述粘结层为无色透明状。
9.如权利要求1所述的塑料复合体,其特征在于:所述塑料复合体还包括形成于所述粘结层与第一塑件之间或粘结层与第二塑件之间的图案层。
10.如权利要求9所述的塑料复合体,其特征在于:所述图案层通过印刷或喷涂的方式形成于第一塑件表面。
11.如权利要求9所述的塑料复合体,其特征在于:所述图案层为薄膜、薄片或薄板,该图案层的材质为金属、塑料、陶瓷。
12.一种塑料复合体的制造方法,包括以下步骤:
提供一第一塑件,该第一塑件的材质为热塑性树脂;
提供一粘结剂,所述粘结剂中含有胺基硅烷偶联剂及去离子水;
采用喷涂的方式,在所述第一塑件上喷涂一层粘结剂,再将第一塑件进行烘烤处理,于所述第一塑件上形成一粘结层;
提供一模具,该模具包括上模、下模及模芯,该上模开设有一模穴,将所述第一塑件定位于该模芯上,闭合该上模与该下模并于该模穴内形成一模腔;
在常压下,向该模腔内灌注液态的热固性塑料,加热该模具,所述热固性塑料固化后于该第一塑件上形成一第二塑件,所述第二塑件为透明状或半透明状。
13.如权利要求12所述的塑料复合体的制造方法,其特征在于:成型所述第二塑件时,模具的温度为60~100℃。
14.如权利要求12所述的塑料复合体的制造方法,其特征在于:所述粘结剂中还含有乙醇,其中,胺基硅烷偶联剂的质量百分含量为2~5%,乙醇的质量百分含量为3~5%,余量为去离子水。
15.如权利要求12或14所述的塑料复合体的制造方法,其特征在于:所述胺基硅烷偶联剂的主要成分为γ-氨丙基三乙氧基硅烷。
16.如权利要求14所述的塑料复合体的制造方法,其特征在于:烘烤所述第一塑件的工艺参数为:烘烤温度为30~50℃,烘烤时间为5~10min。
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| WO2024235354A1 (zh) * | 2023-05-12 | 2024-11-21 | 赵培东 | 热固性树脂与热塑性树脂结合的板材 |
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| KR102084060B1 (ko) * | 2013-06-21 | 2020-03-04 | 삼성디스플레이 주식회사 | 보호용 윈도우의 제조 방법 및 이를 이용하여 제작한 표시 장치 |
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