Functional accessory ingredient for plastic processing and preparation method thereof

Abstract

The invention discloses a functional accessory ingredient for plastic processing and a preparation method thereof. Each raw constituent of the functional accessory ingredient is prepared in parts by weight: 90-100 parts of light calcium carbonate powder, 3-5 parts of calcined clay, 1-2 parts of calcium chloride, 1-2 parts of straw ashes, 3-5 parts of zinc oxide, 3-5 parts of fumed silica, 1-2 parts of methacrylate polymer, 1-2 parts of polyethylene wax, 1-2 parts of sodium alkyl benzene sulfonate and 1-2 parts of glycerol. The preparation method comprises the following steps: continuously oven-drying light calcium carbonate until the water content is below 0.3%, putting the calcium carbonate into a high-speed kneading machine, adding other ingredients by weight percentage, heating the mixture to 100-130 DEG C, keeping at the temperature while stirring for 8-10 min, and discharging to obtain finished products. The functional accessory ingredient for plastic processing provided by the invention reduces the surface energy among the particles and enhances compatibility and dispersity; promotes the plastication of polymer material, reduces melt viscosity, improves processing flowability, improves impact strength, rigidity, heat resistance and size stability, and has the features of energy conservation, environmental friendliness, no poison and no waste water, no waste gas and no waste residues.

Description

technical field [0001] The invention relates to the field of plastic processing, in particular to a functional additive for plastic processing and a preparation method thereof. Background technique [0002] Multifunctional modifiers for plastic processing in my country are still in the development stage, and there is a big gap with foreign countries in terms of variety, output, quality and modification function. [0003] There are many manufacturers of plastic processing modifiers in the world, mainly American Rohmandhass (Rohm and Haas) Company and ATOCHEM Company, Japan Zhongyuan Chemical Company and so on. Rohm and Haas developed the first acrylic impact modifier in the mid-1960s, and then successively developed a series of products such as Paraloid KM323B, KM330, KM334, and KM335, among which Paraloid KM355 is a newer generation product with superior performance. At present, Rohm and Haas has become a major supplier of plastic additives worldwide. Kureha of Japan sell...

AI Technical Summary

Problems solved by technology

In addition, the particle size of ultrafine calcium carbonate is small, and it has a large specific surface area and high specific surface energy. In the process of preparation and post-treatment, particles are prone to coagulation and agglomeration, forming secondary particles, and making the particle size change. Large, the function of ultrafine particles will be lost during the application process, which will affect the actual application effect and cannot play the role of functional filler; on the contrary, some physical properties of the product will be reduced to a certain extent due to interface defects

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