CN105906912B - 一种高浓度彩色色母粒及其制备方法 - Google Patents

一种高浓度彩色色母粒及其制备方法 Download PDF

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CN105906912B
CN105906912B CN201610397487.0A CN201610397487A CN105906912B CN 105906912 B CN105906912 B CN 105906912B CN 201610397487 A CN201610397487 A CN 201610397487A CN 105906912 B CN105906912 B CN 105906912B
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刘家诚
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OPTA POLYMER JIANGSU CO., LTD.
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Abstract

本发明公开了一种高浓度彩色色母粒，其组分按质量百分数配比为：彩色颜料50％～70％、分散剂5％～15％、树脂20％～39％、加工助剂0.5％～1％。本发明还公开了这种高浓度彩色色母粒的制备方法，包括如下步骤：步骤1、按组成原料的质量百分数配比称取彩色颜料、分散剂、树脂和加工助剂，在高低速混料机中混合至原料结成块状；步骤2、将混合好的原料加至三辊研磨机中进行研磨至分散均匀；步骤3、将研磨好的原料加入单螺杆机或双螺杆机挤出切粒。本发明的优点是颜料分散均匀、色母粒表面光滑无气孔，没有出现黑点及色粉点，制备方法简单，分散性好，节约颜料的用量，加工过程中不起尘、加工后的产品无粉尘、无污染。

Description

一种高浓度彩色色母粒及其制备方法
技术领域
本发明涉及塑料着色技术领域，尤其是一种高浓度彩色色母粒及其制备方法。
背景技术
色母粒把色粉均匀地分散在载体树脂中、有固定的形状，便于客户使用，添加量小、干净无粉尘。现有的色母粒制备工艺主要为以下几种：
1、原材料经高低速混料机混合后进入单螺杆/双螺杆挤出机挤出切粒。此工艺除钛白粉和碳酸钙母粒浓度能达到60％～80％以外，彩色特别是吸油量高的有机颜料含量超过20％以后就很难分散。
2、原材料经捏合机或密炼机混炼后进入单螺杆/双螺杆机挤出后切粒。此工艺除钛白粉和碳酸钙母粒浓度能达到60％～80％以外，彩色特别是吸油量高的有机颜料含量超过40％以后就很难分散。
3、色母原材料中的颜料先按50％分散剂加50％颜料进行预分散处理后再按上述工艺进行加工，此法分散良好，但颜料的浓度却受限于颜料预分散处理时的浓度，而无法把颜料的浓度提高。
除了白色色母粒颜料浓度能达到60％～80％，高浓度彩色色母粒很难制备。现有技术中，高低速混料机是利用高速转动使原料之间进行摩擦，对于己形成的硬块和颗粒，再磨碎的能力有限，捏合机和密炼机是低速转动加热使原料中的热塑性原料慢慢由固态转化为玻璃态或液态，在转化过程中利用热塑性原料刚软化时的强剪切力使颜料均匀地分散在热塑性原料中，此法分散性比高低速混料机分散要好，但能耗却要高很多，也是原料之间的摩擦，故颜料浓度过高时就会出现分散不良的情况，且颜料的浓度越高分散就越困难。
发明内容
发明目的：针对上述问题，本发明的目的是解决色母粒生产中高浓度彩色颜料的分散问题，提供一种高浓度彩色颜料且分散良好的色母粒及其制备方法。
技术方案：
一种高浓度彩色色母粒，其组分按质量百分数配比为：彩色颜料50％～70％、分散剂5％～15％、树脂20％～39％、加工助剂0.5％～1％。
所述的分散剂为PE蜡、EVA蜡、PP蜡中的一种。
所述的树脂为PE树脂、EVA树脂中的一种。
所述的加工助剂为硬脂酸类化合物中的一种或任意组合。最佳的，所述的硬脂酸类化合物为硬脂酸锌，硬脂酸，硬脂酸镁，硬脂酸钙中的一种或任意组合。
上述的高浓度彩色色母粒的制备方法，包括如下步骤：
步骤1、按组成原料的质量百分数配比称取彩色颜料、分散剂、树脂和加工助剂，在高低速混料机中混合至原料结成块状；
步骤2、将混合好的原料加至三辊研磨机中进行研磨至分散均匀；
步骤3、将研磨好的原料加入单螺杆挤出机或双螺杆挤出机挤出切粒。
其中，步骤1中，高低速混料机先在400r/min～500r/min混合速度中混合1min～5min后，提高混合速度为900r/min～1200r/min至所有原料结成块状。
其中，步骤2中，三辊研磨机加热的温度为60℃～200℃，具体来说，所述的树脂为PE树脂时，加热温度为80℃～200℃，所述的树脂为EVA树脂时，加热温度为60℃～200℃。
其中，步骤3中，单螺杆挤出机或双螺杆挤出机的加热温度为100℃～250℃，具体来说，所述的树脂为PE树脂时，加热温度为130℃～250℃；所述的树脂为EVA树脂时，加热温度为100℃～200℃。
有益效果：与现有技术相比，本发明的优点是制得的色母粒彩色颜料浓度高达50％～70％，色粉分散均匀、色母粒表面光滑无气孔，没有出现黑点及色粉点；制备方法简单，三辊研磨机在水平的三根辊筒的表面相互挤压的基础上通过不同速度的摩擦而达到研磨效果，颜料分散性好，节约颜料的用量，加工过程中不起尘、加工后的产品无粉尘、无污染。
具体实施方式
下面结合具体实施例，进一步阐明本发明，应理解这些实施例仅用于说明本发明而不用于限制本发明的范围，在阅读了本发明之后，本领域技术人员对本发明的各种等价形式的修改均落于本申请所附权利要求所限定的范围。
实施例1
一种高浓度彩色色母粒，其组分按质量百分数配比为：酞菁蓝60％、PE蜡15％、PE树脂24％、硬脂酸锌1％。
上述高浓度彩色色母粒的制备方法为：将原料加入高低速混料机，400r/min速度混合3min后启动900r/min混合速度至PE树脂熔化形成团块状时停机，再次启动 400r/min慢慢放料。将放下来的料即时放入己加热好的三辊研磨机进行研磨，温度设定在80℃，研磨前调紧三辊之间的间距至1μm，加料后启动三辊研磨机进行研磨，重复研磨三次。将研磨好的物料加入双螺杆挤出机，温度设定在130℃，双螺杆挤出机的滤网为150目，挤出切粒即得，粒子表面光滑无气孔。
将制得的色母粒子与PE本色粒子按质量比0.5∶100混合均匀后，用二辊机加热混炼后拉薄片检测无黑点及色粉点，同样比例用注塑机制取注塑件，着色注塑件表面光亮颜色均匀无杂色点，用强光透射检验无黑点及色粉点。
实施例2
一种高浓度彩色色母粒，其组分按质量百分数配比为：酞菁绿65％、PE蜡14％、PE树脂20％、硬脂酸镁1％。
上述高浓度彩色色母粒的制备方法为：将原料加入高低速混料机，400r/min速度混合5min后启动900r/min混合速度至PE树脂熔化形成团块状时停机，再次启动400r/min慢慢放料。将放下来的料即时放入己加热好的三辊研磨机进行研磨，温度设定在150℃，研磨前调紧三辊之间的间距为1μm，加料后启动三辊研磨机进行研磨，重复研磨三次。将研磨好的物料加入双螺杆挤出机，温度设定在200℃，双螺杆挤出机的滤网为150目，挤出切粒即得，粒子表面光滑无气孔。
将制得的色母粒子与PE本色粒子按质量比0.5∶100混合均匀后，用二辊机加热混炼后拉薄片检测无黑点及色粉点，同样比例用注塑机制取注塑件，着色注塑件表面光亮颜色均匀无杂色点，用强光透射检验无黑点及色粉点。
实施例3
一种高浓度彩色色母粒，其组分按质量百分数配比为：偶氮颜料70％、EVA蜡9％、EVA树脂20％、硬脂酸钙1％。
上述高浓度彩色色母粒的制备方法为：将原料加入高低速混料机，400r/min速度混合5min后启动900r/min混合速度至EVA树脂熔化形成团块状时停机，再次启动400r/min慢慢放料。将放下来的料即时放入己加热好的三辊研磨机进行研磨，温度设定在200℃，研磨前调紧三辊之间的间距为1μm，加料后启动三辊研磨机进行研磨，重复研磨三次。将研磨好的物料加入单螺杆挤出机，温度设定在100℃，双螺杆挤出机的滤网为150目，挤出切粒即得，粒子表面光滑无气孔。
将制得的色母粒子与EVA本色粒子按质量比0.5∶100混合均匀后，用二辊机加热混炼后拉薄片检测无黑点及色粉点，同样比例用注塑机制取注塑件，着色注塑件表面光 亮颜色均匀无杂色点，用强光透射检验无黑点及色粉点。
实施例4
一种高浓度彩色色母粒，其组分按质量百分数配比为：颜料黄60％、PE蜡12％、PE树脂27％、硬脂酸锌1％。
上述高浓度彩色色母粒的制备方法为：将原料加入高低速混料机，400r/min速度混合5min后启动900r/min混合速度至PE树脂熔化形成团块状时停机，再次启动400r/min慢慢放料。将放下来的料即时放入己加热好的三辊研磨机进行研磨，温度设定在200℃，研磨前调紧三辊之间的间距至1μm，加料后启动三辊研磨机进行研磨，重复研磨三次。将研磨好的物料加入双螺杆挤出机，温度设定在250℃，双螺杆挤出机的滤网为150目，挤出切粒即得，粒子表面光滑无气孔。
将制得的色母粒子与PE本色粒子按0.5∶100的比例混合均匀后，用二辊机加热混炼后拉薄片检测无黑点及色粉点，同样比例用注塑机制取注塑件，着色注塑件表面光亮颜色均匀无杂色点，用强光透射检验无黑点及色粉点。
实施例5
一种高浓度彩色色母粒，其组分按质量百分数配比为：耐晒大红65％、EVA蜡14％、PE树脂20％、硬脂酸锌1％。
上述高浓度彩色色母粒的制备方法为：将原料加入高低速混料机，400r/min速度混合5min后启动900r/min混合速度至PE树脂熔化形成团块状时停机，再次启动400r/min慢慢放料。将放下来的料即时放入己加热好的三辊研磨机进行研磨，温度设定在100℃，研磨前调紧三辊之间的间距至1μm，加料后启动三辊研磨机进行研磨，重复研磨三次。将研磨好的物料加入双螺杆挤出机，温度设定在150℃，双螺杆挤出机的滤网为150目，挤出切粒即得，粒子表面光滑无气孔。
将制得的色母粒子与PE本色粒子按0.5∶100的比例混合均匀后，用二辊机加热混炼后拉薄片检测无黑点及色粉点，同样比例用注塑机制取注塑件，着色注塑件表面光亮颜色均匀无杂色点，用强光透射检验无黑点及色粉点。
实施例6
一种高浓度彩色色母粒，其组分按质量百分数配比为：颜料紫50％、PP蜡15％、EVA树脂34.5％、硬脂酸锌0.5％。
上述高浓度彩色色母粒的制备方法为：将原料加入高低速混料机，400r/min速度混合1min后启动900r/min混合速度至EVA树脂熔化形成团块状时停机，再次启动 400r/min慢慢放料。将放下来的料即时放入己加热好的三辊研磨机进行研磨，温度设定在60℃，研磨前调紧三辊之间的间距至1μm，加料后启动三辊研磨机进行研磨，重复研磨三次。将研磨好的物料加入双螺杆挤出机，温度设定在200℃，双螺杆挤出机的滤网为150目，挤出切粒即得，粒子表面光滑无气孔。
将制得的色母粒子与EVA本色粒子按0.5∶100的比例混合均匀后，用二辊机加热混炼后拉薄片检测无黑点及色粉点，同样比例用注塑机制取注塑件，着色注塑件表面光亮颜色均匀无杂色点，用强光透射检验无黑点及色粉点。
本发明制备出的是颜料浓度高达50％～70％的彩色色母粒，对制得的产品进行检测，其颜料分散均匀、表面无气孔、质地光滑。本发明适用于原料配方中不包括钛白粉和碳酸钙的其它彩色颜料，不仅局限于实施例中采用的颜料。
本发明制备过程中应用三辊研磨机，对于高浓度彩色颜料的研磨及分散起到了关键作用，通过水平的三根辊筒的表面相互挤压及不同速度的摩擦而达到研磨效果，经此方式加工的色母粒因为分散性好，所以能减少彩色颜料的用量。
本发明制备方法中先在高低速混料机中混合原料，使彩色颜料色粉等粉尘源与热塑性树脂形成块状，树脂将颜料等粉尘源包覆起来，在三辊研磨机研磨过程中采用加热的方式利用树脂遇热变软至液态的性能使加工过程中不起尘，加工后的产品无粉尘，只有碎屑，无污染。
在检测步骤中，与制得的色母粒混合的树脂本色粒子选择色母粒原料中采用的树脂，检测色母粒在相应树脂中的应用。经检测得利用本发明制备方法得到的色母粒，适用于添加到相应本色树脂中调色，颜料分散均匀，有良好的应用性能。

Claims (1)

1.一种高浓度彩色色母粒的制备方法，其特征在于：所述高浓度彩色色母粒，其原料组分按质量百分数配比为酞菁蓝60％、PE蜡15％、PE树脂24％、硬脂酸锌1％；将所述原料加入高低速混料机，400r/min速度混合3min后启动900r/min混合速度至PE树脂熔化形成团块状时停机，再次启动400r/min放料，放入三辊研磨机进行研磨，所述研磨温度为80℃，三辊之间的间距为1μm，将所述研磨后的原料放入双螺杆挤出机，挤出温度为130℃，双螺杆挤出机的滤网为150目，挤出切粒。
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