CN110923712A - 一种用于高玻纤维原料注塑模具的复合涂层及其制备方法 - Google Patents
一种用于高玻纤维原料注塑模具的复合涂层及其制备方法 Download PDFInfo
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Abstract
本发明涉及的用于高玻纤维原料注塑模具的复合涂层，包括直接与注塑模具内腔表面结合的多孔结合层以及设置在多孔结合层上的耐磨功能层，多孔结合层为碳纳米管阵列层，耐磨功能层为TiCrCN陶瓷相涂层。由于碳纳米管阵列在模具内腔表面上具有很强的附着力，并且碳纳米管阵列具有高比表面积，有效提高TiCrCN陶瓷相涂层与模具内腔表面的结合力，能够有效防止复合涂层在工作过程中剥落，从而提高注塑模具的使用寿命；TiCrCN陶瓷相涂层具有很高硬度，从而使具有复合涂层模具内腔表面拥有高耐磨性，在注塑成型过程中可避免模具的磨损，并提高产品的精度和质量。
Description
技术领域
本发明涉及一种用于高玻纤维原料注塑模具的复合涂层及其制备方法。
背景技术
随着现代化工业发展，越来越多的塑料产品需要进行加工成型处理，在塑料中添加高玻纤维可增加产品的相对密度10％-20％，强度提升1-3倍，并能够有效提升其可加工性能。由于具有高强度高硬度的高玻纤维原料的存在，注塑模具在使用过程中容易收到较高程度的磨损，导致模具内腔表面的平整性遭到破坏，导致注塑模具的使用寿命较短。因此，此类注塑模具的内腔表面一般需要沉积一层涂层来提升其耐磨性。但是由于注塑模具生产塑料产品过程的重复性，并且模具内腔受力不均匀，其表面的涂层容易被磨损甚至剥落，从而引发模具内腔的表面损伤。
发明内容
本发明的目的在于提供一种用于高玻纤维原料注塑模具且不易剥落、具有高耐磨性的复合涂层。
为达到上述目的，本发明提供如下技术方案：一种用于高玻纤维原料注塑模具的复合涂层，包括直接与注塑模具内腔表面结合的多孔结合层以及设置在所述多孔结合层上的耐磨功能层，所述多孔结合层为碳纳米管阵列层，所述耐磨功能层为TiCrCN陶瓷相涂层。
进一步地，所述碳纳米管阵列层的厚度为2um-3um。
进一步地，所述TiCrCN陶瓷相涂层的厚度为4um-8um。
进一步地，所述复合涂层的厚度为4um-9um。
本发明还提供了一种用以制备所述用于高玻纤维原料注塑模具的复合涂层的制备方法，所述制备方法如下：
S1、提供用于高玻纤维原料的注塑模具，将所述用于高玻纤维原料的注塑模具内腔表面沉积Co-Ni合金纳米颗粒；
S2、在所述Co-Ni合金纳米颗粒上制备碳纳米管阵列层，所述碳纳米管阵列层的厚度为2um-3um；
S3、在所述碳纳米管阵列层表面沉积TiCrCN陶瓷相涂层，所述TiCrCN陶瓷相涂层的厚度为4um-8um。
进一步地，所述Co-Ni合金纳米颗粒由电沉积方法制备形成。
进一步地，所述碳纳米管阵列层由原位生长方法制备形成。
进一步地，所述原位生长方法的条件为高纯度乙腈以及700～800℃高温。
进一步地，所述碳纳米管阵列层包括碳纳米管，所述Co-Ni合金纳米颗粒嵌入在所述碳纳米管内部。
进一步地，所述TiCrCN陶瓷相涂层由磁控溅射技术沉积制备形成。
本发明的有益效果在于：本发明所提供的用于高玻纤维原料注塑模具的复合涂层包括碳纳米管阵列的多孔结合层以及设置在所述多孔结合层上的TiCrCN陶瓷相涂层的耐磨功能层，由于碳纳米管阵列在模具内腔表面上具有很强的附着力，并且碳纳米管阵列具有高比表面积，有效提高TiCrCN陶瓷相涂层与模具内腔表面的结合力，能够有效防止复合涂层在工作过程中剥落，从而提高注塑模具的使用寿命；TiCrCN陶瓷相涂层具有很高硬度，从而使具有复合涂层模具内腔表面拥有高耐磨性，在注塑成型过程中可避免模具的磨损，并提高产品的精度和质量。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，并可依照说明书的内容予以实施，以下以本发明的较佳实施例并配合附图详细说明如后。
附图说明
图1为本发明一实施例的注塑模具及复合涂层的结构示意图。
具体实施方式
下面将结合附图对本发明的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
在本发明的描述中，需要说明的是，术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的机构或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本发明的限制。此外，术语“第一”、“第二”、“第三”仅用于描述目的，而不能理解为指示或暗示相对重要性。
在本发明的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以具体情况理解上述术语在本发明中的具体含义。
此外，下面所描述的本发明不同实施方式中所涉及的技术特征只要彼此之间未构成冲突就可以相互结合。
请参见图1，本发明一实施例所示的用于高玻纤维原料注塑模具1的复合涂层2，包括直接与注塑模具1内腔表面结合的多孔结合层21以及设置在多孔结合层21上的耐磨功能层22，具体的，耐磨功能层22部分嵌入在多孔结合层21内。多孔结合层21为碳纳米管阵列层21，耐磨功能层22为TiCrCN陶瓷相涂层22。碳纳米管阵列层21的厚度为2um-3um，TiCrCN陶瓷相涂层22的厚度为4um-8um，复合涂层2的厚度为4um-8um。
碳纳米阵列层21具有多孔结构，该多孔结构可大幅度增加与注塑模具1内腔表面接触面积，同时多孔结构自身具有较大的比表面积，碳纳米阵列层21设置在注塑模具1内腔表面与TiCrCN陶瓷相涂层22之间，有效增强TiCrCN陶瓷相涂层22与注塑模具1内腔表面之间结合力，从而有效防止复合涂层在工作过程中剥落，从而提高注塑模具的使用寿命。
注塑模具1内腔表面形成有碳纳米管阵列层21和TiCrCN陶瓷相涂层21组成的复合涂层2，可显著增加注塑模具1内腔表面的硬度、抗磨力同时降低摩擦系数，从而使模具1内腔表面拥有高耐磨性，在注塑成型过程中可避免模具的磨损，并提高产品的精度和质量，可显著延长模具使用寿命。
本发明还提供了一种用以制备上述用于高玻纤维原料注塑模具的复合涂层的制备方法，制备方法如下：
S1、提供用于高玻纤维原料注塑模具1，将用于高玻纤维原料注塑模具1内腔表面沉积Co-Ni合金纳米颗粒。具体的，利用电沉积方法制备Co-Ni合金纳米颗粒：用去离子水配制Co-Ni合金镀液，镀液组成为：CoCl2·6H2O 0.1mol·L-1，NiCl2·6H2O 0.1mol·L-1，尿素0.02mol·L-1-0.05mol·L-1。电沉积温度为20℃-35℃，平均阴极电流密度2mA·cm-2-20mA·cm-2，脉冲电流的占空比为40％，脉冲频率为100Hz，电沉积时长为0.5min-2min。
S2、在Co-Ni合金纳米颗粒上制备碳纳米管阵列层21。具体的，原位生长碳纳米管阵列层21：在常压氩气环境下，模具1内腔表面的Co-Ni合金纳米颗粒与高纯度乙腈在700℃-800℃条件下原位生长碳纳米管阵列层21，气体流量为20ml/min-30ml/min。碳纳米管阵列层包括碳纳米管，反应结束后Co-Ni合金纳米颗粒脱离模具1内腔表面并且嵌入碳纳米管内部。制备得到的碳纳米管阵列层21的厚度为2um-3um。
S3、在碳纳米管阵列层21表面沉积TiCrCN陶瓷相涂层22。具体的，利用磁控溅射技术沉积制备：抽真空到1.0x10-3Pa以上，通入的氮气(纯度为99.999％)和乙炔(纯度为99.99％)的体积比为1：1-1.5的混合气体，压力控制在0.5Pa-1Pa，同时开启金属Cr和金属Ti电弧靶源。偏压控制在10V-1000V，占空比控制在50％，溅射时长为60min-100min，制备得到TiCrCN陶瓷相涂层22的厚度为4um-8um。TiCrCN陶瓷相涂层22部分嵌入在碳纳米管阵列层21内并形成注塑模具1内腔表面的CNTs/TiCrCN复合涂层2。该CNTs/TiCrCN复合涂层2硬度达到3200HV-3800HV，并且与注塑模具1内腔表面之间结合力可达35N-45N，CNTs/TiCrCN复合涂层2使得注塑使模具1内腔表面拥有高耐磨性并且有效防止自身剥落。
综上，本发明所提供的用于高玻纤维原料注塑模具的复合涂层包括碳纳米管阵列的多孔结合层以及设置在多孔结合层上的TiCrCN陶瓷相涂层的耐磨功能层，由于碳纳米管阵列在模具内腔表面上具有很强的附着力，并且碳纳米管阵列具有高比表面积，有效提高TiCrCN陶瓷相涂层与模具内腔表面的结合力，能够有效防止复合涂层在工作过程中剥落，从而提高注塑模具的使用寿命；TiCrCN陶瓷相涂层具有很高硬度，从而使具有复合涂层模具内腔表面拥有高耐磨性，在注塑成型过程中可避免模具的磨损，并提高产品的精度和质量。
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上所述实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。
Claims (10)
1.一种用于高玻纤维原料注塑模具的复合涂层，其特征在于，所述用于高玻纤维原料注塑模具的复合涂层包括直接与注塑模具内腔表面结合的多孔结合层以及设置在所述多孔结合层上的耐磨功能层，所述多孔结合层为碳纳米管阵列层，所述耐磨功能层为TiCrCN陶瓷相涂层。
2.如权利要求1所述的用于高玻纤维原料注塑模具的复合涂层，其特征在于，所述碳纳米管阵列层的厚度为2um-3um。
3.如权利要求1所述的用于高玻纤维原料注塑模具的复合涂层，其特征在于，所述TiCrCN陶瓷相涂层的厚度为4um-8um。
4.如权利要求1所述的用于高玻纤维原料注塑模具的复合涂层，其特征在于，所述复合涂层的厚度为4um-9um。
5.一种用以制备权利要求1至4项中任一项所述的用于高玻纤维原料注塑模具的复合涂层的制备方法，其特征在于，所述制备方法如下：
S1、提供用于高玻纤维原料的注塑模具，将所述用于高玻纤维原料的注塑模具内腔表面沉积Co-Ni合金纳米颗粒；
S2、在所述Co-Ni合金纳米颗粒上制备碳纳米管阵列层，所述碳纳米管阵列层的厚度为2um-3um；
S3、在所述碳纳米管阵列层表面沉积TiCrCN陶瓷相涂层，所述TiCrCN陶瓷相涂层的厚度为4um-8um。
6.如权利要求5所述的用于高玻纤维原料注塑模具的复合涂层的制备方法，其特征在于，所述Co-Ni合金纳米颗粒由电沉积方法制备形成。
7.如权利要求5所述的用于高玻纤维原料注塑模具的复合涂层的制备方法，其特征在于，所述碳纳米管阵列层由原位生长方法制备形成。
8.如权利要求7所述的用于高玻纤维原料注塑模具的复合涂层的制备方法，其特征在于，所述原位生长方法的条件为高纯度乙腈以及700～800℃高温。
9.如权利要求5所述的用于高玻纤维原料注塑模具的复合涂层的制备方法，其特征在于，所述碳纳米管阵列层包括碳纳米管，所述Co-Ni合金纳米颗粒嵌入在所述碳纳米管内部。
10.如权利要求5所述的用于高玻纤维原料注塑模具的复合涂层的制备方法，其特征在于，所述TiCrCN陶瓷相涂层由磁控溅射技术沉积制备形成。
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