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填充母料混合时如何提高混合速度?

发表时间:2020-11-24 15:12:45点击:
 

在熔融搅拌过程中,提高搅拌速度可以改善物料间的剪切效果,达到搅拌均匀的目的。 粒径分布:填充母料粒径分布宽的粉料装填性比粒径分布窄的更密实。因为小粒径可以进入大粒子之间的间隙中去,可是将二种粒径相差大的粉料相混合,则难以混得均匀。 配方中各组分的加入顺序在混合过程中是不同的,可以得到不同的混合效果。 在初始混合时,提高混合速度可以增加物料间的对流,从而有效地提高混合均匀性。

填充母料混合时如何提高混合速度?

This method is particularly effective for mixing solid components. For the thermal sensitive additive which is easy to decompose, it should be added at the end to prevent the thermal decomposition caused by too long high temperature residence time. The uniformity of the mixing system can be effectively improved by proper top treatment of the components in the formula before the material pretreatment and mixing. In order to prevent the friction between materials from decreasing and affecting the mixing effect, lubricant should be added later.

吹膜填充母料

吹膜填充母料

填充母料是塑料生产中的重要添加剂。填充母料的主要成分是碳酸钙,但除碳酸钙外,还有许多具有主要特性的载体树脂和添加剂。各厂家的各种成分含量、添加剂种类各不相同,但各厂家都非常重视在生产过程中填料的各个成分必须混合均匀,使所生产的母材在以后的生产和使用中能更好地与塑料原料混合,生产出的塑料制品也会更好。

填充母料是粒径0.1~3mm组成的粒状固体。0.1mm(100μm)为微粒组成的粉末;1~10μm为精细粉末;0.1~1μm为超细粉末;》3mm的粒子为破碎固体块。粒径越小,得到的混合物越密实。但同种固体的粒径越小,粒子之间也越容易互相吸附结团,这种结团,在与另一种固体颗粒混合时就不易打开,在塑胶熔体中也难分散开来。

Preheating treatment of fillers: before mixing, if possible, preheat the components in the formula properly, which can remove some volatile substances, accelerate the diffusion speed in the mixing process, and improve the mixing uniformity. For inorganic fillers with high oil absorption rate, it should be added as soon as possible when there is liquid component in the formula. Prevent the absorption of unrelated components. For example, when cop3 and DOP are mixed in the formulation, for example.

为了使填充母料组分在生产中均匀混合,一般生产中应注意以下几点: 填充母料是把超常量的颜料(染料)均匀载附于树脂中而得到的聚集体。填充母料是指在塑料加工成型过程中,为了操作上的方便,将所需要的各种助剂、填料与少量载体树脂先进行混合混炼,经过挤出机等设备计量、混合、熔融、挤出、切粒等加工过程制得的颗粒料,称为填充母料。

The master batch is a granular solid with particle size of 0.1 ~ 3 mm. 0.1 mm (100 μ m) is the powder composed of particles; 1 ~ 10 μ m is fine powder; 0.1 ~ 1 μ m is ultra-fine powder; 3 mm is broken solid block. The smaller the particle size, the more dense the mixture. However, the smaller the particle size of the same solid, the easier it is for the particles to adsorb and agglomerate with each other. This kind of agglomeration is not easy to open when mixed with another solid particle, and it is difficult to disperse in the plastic melt.

填料表面处理:主要用于无机填料。由于无机填料与有机树脂的相容性差,对无机填料进行表面处理可以提高其与树脂的相容性,使其更好地混合。Jl-g系列填料表面改性剂分散剂活化剂常用于无机填料表面的有机涂层改性,以达到疏水处理的目的。 在混合过程中,提高混合温度可以促进物料间的扩散和对流,加速物料间的混合,提高混合均匀性。

填料预热处理:在搅拌前,如有可能,对配方中的组分进行适当预热,可去除部分挥发性物质,加快搅拌中的扩散速度,提高搅拌均匀性。 对于高吸油率的无机填料,当配方中有液体成分时,应尽快加入。防止不相关的成分吸收。例如,当软质PVC配方中含有DOP和CaCO3时,由于CaCO3的高吸油性,应在PVC和DOP完全混合后加入。

吹膜填充母料

吹膜填充母料

填充母料由载体树脂、各种填料和各种助剂组成的。填充母料中助剂的限度或填料的含量比实际塑料制品中的需要量要高数倍至十几倍。在成型加工过程中,必须根据填充母料中有关组分的含量和实际制品中需要加入的量,调节填充母料与基体树脂的配比。填充母料通常可以分为普通填充填充母料(简称填充填充母料)和功能性填充母料,如色填充母料、防雾滴填充母料等。

Filler masterbatch is an important additive in plastic production. The main component of masterbatch is calcium carbonate, but in addition to calcium carbonate, there are many carrier resins and additives with main characteristics. The contents of various components and additives vary from manufacturer to manufacturer. However, all manufacturers attach great importance to the fact that all components of fillers must be mixed evenly in the production process, so that the base materials can be better mixed with plastic raw materials in the future production and use, and the plastic products produced will be better.

这种方法对固体组分的混合特别有效。 对易分解的热敏性添加剂,应在末端添加,防止高温停留时间过长而引起热分解。 在材料预处理 混合之前,对配方中的组分进行适当的顶部处理,可以有效地改善混合系统的均匀性。 为防止材料间的摩擦减小,影响混合效果,应在以后添加润滑剂。 

The masterbatch is composed of carrier resin, various fillers and various additives. The content of medium to high filler is more than ten times of the actual amount of plastic. In the process of molding, the ratio of masterbatch to matrix resin must be adjusted according to the content of related components in masterbatch and the amount needed to be added in the actual product. Masterbatch can be divided into common filler masterbatch and functional masterbatch, such as color masterbatch and antifogging masterbatch.

In order to make the components of masterbatch mix evenly in production, the following points should be paid attention to in general production: masterbatch is the aggregate obtained by uniformly loading super constant pigment (dye) into resin. Masterbatch refers to the granulated material obtained by mixing various additives, fillers and a small amount of carrier resin in the process of plastic processing and molding, and then measuring, mixing, melting, extruding and pelleting by extruder and other equipment, which is called masterbatch.填充母料厂家:www.fzwangjiahong.com