CN114805979A - 一种色母粒的制备工艺 - Google Patents

一种色母粒的制备工艺 Download PDF

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CN114805979A
CN114805979A CN202210382212.5A CN202210382212A CN114805979A CN 114805979 A CN114805979 A CN 114805979A CN 202210382212 A CN202210382212 A CN 202210382212A CN 114805979 A CN114805979 A CN 114805979A
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程万钧
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Changxing Cologne New Material Technology Co ltd
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Abstract

本发明涉及色母粒及其制备工艺技术领域,且公开了一种色母粒制备工艺。本发明的色母粒,组分分别是:载体20~50%、色粉0.01~70%、分散剂0~40%、加工助剂0~10%、填料0~40%。对色粉、分散剂、加工助剂和填料进行砂磨预处理,同载体在高速混合机中混合,采用双螺杆挤出机进行熔融共混,然后挤出进行造粒、干燥制得本发明的所需的色母粒。本发明所得的色母粒用于ABS制品的上色,能够更好得分散颜料,避免了色母粒在ABS塑料制品上出现的色差、流纹、色泽不均匀等问题。同时,本发明的制作工艺简单、操作环境友好。

Description

一种色母粒的制备工艺
技术领域
本发明涉及色母粒制备工艺领域,具体地说是一种色母粒的制备工艺。
背景技术
色母粒由高比例的颜料或添加剂与热塑性树脂,经良好分散而成的塑料着色剂,其所选用的树脂对着色剂具有良好润湿和分散作用,并且与被着色材料具有良好的相容性,因此,色母粒有着广泛的用途,尤其是塑料中,但是随着色母粒广泛的应用,对色母粒也提出更好的要求,现有技术中的色母粒。
色母粒在ABS塑料制品制作上也有广泛的应用。但是色母粒在生产过程中出现色差可以说是相对比较普遍的问题,而其出现色差不仅会影响产品质量,更会影响后期的使用效果。其原因有润滑剂、抗氧剂、抗老化剂、抗静电剂等等辅助物料影响了分散剂和颜料的相互作用。
发明内容
(一)解决的技术问题
针对现有技术的不足,本发明提供了一种色母粒的制作工艺,着色和制品加工一次完成,改进了颜料和分散剂的加料方式,对辅助物料和颜料进行了预处理,避免造粒着色对塑料的加热过程,对保护塑料制品的品质有好处。使塑料制品的生产工艺最简化,且能较大的避免色差问题。
(二)技术方案
为实现上述目的,本发明提供如下技术方案:由如下组分和重量百分数组成:载体20~50%、色粉0.01~70%、分散剂0~40%、加工助剂0~10%、填料0~40%的原料,对色粉、分散剂、加工助剂和填料进行砂磨预处理,再和载体加入到搅拌器中。进行高速混匀的色粉经过冷却烘干切粒制成色母粒。
优选的,上述载体为:聚乙烯(PE)、聚丙烯(PP)、丙烯腈(A)-丁二烯(B)-苯乙烯(S)的三元共聚物(ABS)、丙烯腈-苯乙烯树脂(AS聚对苯二甲酸丁二醇酯(PBT)其中的一种或几种的混合等的其中一种或几种混合物。这些聚合物作为载体具有较好的流动性,易加工,与ABS具有较好的相容性。
优选的,上述色粉为有机颜料和无机颜料。有机颜料包括:酞菁红、酞菁蓝等;无机颜料包括:钛白粉、炭黑等。
优选的,上述分散剂为根据权利要求1所述的一种色母粒的制备工艺,其特征在于,所述分散剂有硬脂酸单甘油酯、微晶石蜡硬脂酸镁、硬脂酸铜和硬脂酸钡等。分散剂由其中一种或几种搭配使用。这些低分子组分在加工中熔融并包覆在颜料颗粒表面,促进颜料的分散并使之稳定化的作用。
优选的,上述加工助剂为硬脂酸、硬脂酸盐、白矿油或聚硅酮中的一种或多种的复合物。加工助剂的加入可以降低物料与机筒、模具表面的摩擦力,解决了表面光泽度不佳、脱模困难等问题。
上述填料为碳酸钙、滑石粉或硅灰石中的一种或多种的混合物。优选的,上述填料为表面包覆的氧化钙、硫酸钡中的一种或两种的混合物。
优选的,在制备方法上包括以下步骤:
S1、按比例称取各重量份的原料,色粉、分散剂、加工助剂和填料进行砂磨,所得作为预处理颜料。载体放入混合搅拌机中进行混合,混合转速为400转/分钟,混合温度控制在70℃,时间为2分钟,将预处理颜料加入入混合搅拌机中混合转速为600转/分钟,混合温度控制在70℃,时间为8分钟,得到混合料。
S2、将混合料投入双螺杆挤出机料斗内,挤出机内温度控制为180~220℃,螺杆转速为500r/min,机头温度为220℃,螺杆的转速为350转/分。
S3、混合料受热熔化,在双螺杆挤出机的螺杆推动下,进行物理和化学反应,经孔状口模流出,挤出物水冷后,通过切粒机切成尺寸为3×3mm的圆柱状粒料。
S4、将粒料于热风循环式干燥机中80℃干燥3小时。
(三)有益效果
与现有技术相比,本发明具有如下有益效果:本发明提供的色母粒应用于ABS制品的着色时,可以使颜料可以更好的分散在载体树脂中,从而使其制品的颜色稳定性更高、色差更小,克服了现有ABS色母粒着色时颜色不稳定、色差较大等问题,同时操作难度和条件并没有增大,应用前景广阔。
具体实施方式
下面将结合实施例详细说明本发明,但不对本发明的权利要求做任何限定。显然,所描述的实施例仅仅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。
实施例1
按比例称取各重量份的原料,聚乙烯(PE)20%、聚丙烯(PP)15%、酞菁红30%、硬脂酸单甘油酯10%、微晶石蜡5%、硬脂酸7%、硬脂酸盐3%、碳酸钙10%。其中酞菁红、硬脂酸单甘油酯、微晶石蜡、硬脂酸、硬脂酸盐、碳酸钙加入砂磨机30℃以下进行砂磨5min使其粒度在200纳米左右,所得作为预处理颜料。聚乙烯(PE)和聚丙烯(PP)放入混合搅拌机中进行混合,混合转速为400转/分钟,混合温度控制在70℃,时间为2分钟,将预处理颜料加入入混合搅拌机中混合转速为600转/分钟,混合温度控制在70℃,时间为8分钟,得到混合料。
S2、将混合料投入双螺杆挤出机料斗内,挤出机内温度控制为180~220℃,螺杆转速为500r/min,机头温度为220℃,螺杆的转速为350转/分。
S3、混合料受热熔化,在双螺杆挤出机的螺杆推动下,进行物理和化学反应,经孔状口模流出,挤出物水冷后,通过切粒机切成尺寸为3×3mm的圆柱状粒料。
S4、将粒料于热风循环式干燥机中80℃干燥3小时。
实施例2
按比例称取各重量份的原料,丙烯腈(A)-丁二烯(B)-苯乙烯(S)的三元共聚物(ABS)50%、酞菁蓝10%、硬脂酸镁20%、白矿油5%、滑石粉15%。其中酞菁蓝、硬脂酸镁、白矿油、滑石粉加入砂磨机30℃以下进行砂磨5min使其粒度在200纳米左右,所得作为预处理颜料。丙烯腈(A)-丁二烯(B)-苯乙烯(S)的三元共聚物(ABS)放入混合搅拌机中进行混合,混合转速为400转/分钟,混合温度控制在70℃,时间为2分钟,将预处理颜料加入入混合搅拌机中混合转速为600转/分钟,混合温度控制在70℃,时间为8分钟,得到混合料。
S2、将混合料投入双螺杆挤出机料斗内,挤出机内温度控制为180~220℃,螺杆转速为500r/min,机头温度为220℃,螺杆的转速为350转/分。
S3、混合料受热熔化,在双螺杆挤出机的螺杆推动下,进行物理和化学反应,经孔状口模流出,挤出物水冷后,通过切粒机切成尺寸为3×3mm的圆柱状粒料。
S4、将粒料于热风循环式干燥机中80℃干燥3小时
实施例3
按比例称取各重量份的原料,丙烯腈-苯乙烯树脂(AS)20%、聚对苯二甲酸丁二醇酯(PBT)15%、钛白粉40%、炭黑0.01%、硬脂酸铜5%、硬脂酸钡15%、硅灰石5%。其中钛白粉、炭黑、硬脂酸铜、硬脂酸钡、硅灰石加入砂磨机30℃以下进行砂磨5min使其粒度在200纳米左右,所得作为预处理颜料。丙烯腈-苯乙烯树脂(AS)和聚对苯二甲酸丁二醇酯放入混合搅拌机中进行混合,混合转速为400转/分钟,混合温度控制在70℃,时间为2分钟,将预处理颜料加入入混合搅拌机中混合转速为600转/分钟,混合温度控制在70℃,时间为8分钟,得到混合料。
S2、将混合料投入双螺杆挤出机料斗内,挤出机内温度控制为180~220℃,螺杆转速为500r/min,机头温度为220℃,螺杆的转速为350转/分。
S3、混合料受热熔化,在双螺杆挤出机的螺杆推动下,进行物理和化学反应,经孔状口模流出,挤出物水冷后,通过切粒机切成尺寸为3×3mm的圆柱状粒料。
S4、将粒料于热风循环式干燥机中80℃干燥3小时。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。

Claims (7)

1.一种色母粒的制备工艺,其特征在于,由以下原料组成:载体20~50%、色粉0.01~70%、分散剂0~40%、加工助剂0~10%、填料0~40%。
2.根据权利要求1所述的一种色母粒的制备工艺,其特征在于,色粉为有机颜料和无机颜料。有机颜料包括:酞菁红、酞菁蓝等;无机颜料包括:钛白粉、炭黑等。
3.根根据权利要求1所述的一种色母粒的制备工艺,其特征在于,所述载体树脂为:聚乙烯(PE)、聚丙烯(PP)、丙烯腈(A)-丁二烯(B)-苯乙烯(S)的三元共聚物(ABS)、丙烯腈-苯乙烯树脂(AS)和聚对苯二甲酸丁二醇酯(PBT)其中的一种或几种的混合。
4.根据权利要求1所述的一种色母粒的制备工艺,其特征在于,所述分散剂有硬脂酸单甘油酯、微晶石蜡、硬脂酸镁、硬脂酸铜和硬脂酸钡等。分散剂由其中一种或几种搭配使用。
5.根据权利要求1所述的一种色母粒的制备工艺,其特征在于,所述加工助剂为硬脂酸、硬脂酸盐、白矿油或聚硅酮中的一种或多种的复合物。
6.据权利要求1所述的一种色母粒的制备工艺,其特征在于,所述填料为碳酸钙、滑石粉或硅灰石中的一种或多种的混合物。
7.根据权利要求1所述的一种色母粒的制备工艺,其特征在于,制备方法上包括以下步骤:
S1、按比例称取各重量份的原料,色粉、分散剂、加工助剂和填料进行砂磨,所得作为预处理颜料。载体放入混合搅拌机中进行混合并加热,将预处理颜料加入混合搅拌机中混合加热得到混合料。
S2、混合料受热熔化,在双螺杆挤出机的螺杆推动下,进行物理和化学反应,经孔状口模流出,挤出物水冷后,通过切粒机切成粒料。
S4、将粒料放置于干燥机中干燥。
CN202210382212.5A 2022-04-12 2022-04-12 一种色母粒的制备工艺 Pending CN114805979A (zh)

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