Biodegradable talcum powder master batch and preparation process thereof

Abstract

The invention discloses a biodegradable talcum powder master batch and a preparation method thereof, wherein the biodegradable talcum powder master batch comprises talcum powder, poly(butylene terephthalate)-adipate, cellulose nanofibers, a coupling agent, a lubricating agent, a dispersant and a surfactant and comprises the raw materials in parts by weight: 50-60 parts of talcum powder, 20-30 parts of poly(butylene terephthalate)-adipate, 10-20 parts of the cellulose nanofibers, 3-5 parts of a coupling agent solution, 2-3 parts of the lubricating agent, 2-3 parts of the dispersant and 1-2 parts of the surfactant. The preparation method comprises the preparation steps: preparing materials; preparing modified talcum powder; preparing modified cellulose nanofibers; preparing a carrier solution; preparing a biodegradable talcum powder mixed material; preparing a biodegradable talcum powder master batch; and cooling, screening, homogenizing and packaging. The invention aims to solve the problems that existing talcum powder master batch does not have biodegradability, and the improvement of the talcum powder master batch on the mechanical property of a degradable plastic product needs to be further enhanced.

Description

technical field [0001] The invention relates to the field of talcum powder masterbatch processing, in particular to a biodegradable talcum powder masterbatch and a preparation process thereof. Background technique [0002] Talc powder is an industrial product. It is a magnesium silicate mineral talc group. The main component is hydrous magnesium silicate. After being crushed, it is treated with hydrochloric acid, washed with water, and dried. Salt minerals and talc powder are widely used in various industries. As an inorganic filler, it plays an important role in the field of plastic processing and becomes an indispensable modification additive. Talc powder with white flake structure is an important An effective reinforcing material, no matter at room temperature or high temperature, it can endow the plastic with high rigidity, creep resistance and good solid gloss. The addition of talc powder can change various properties of the plastic, such as molding shrinkage, Surface ...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a biodegradable talcum powder master batch and its preparation process, to solve the problem that the talc powder master batch in the prior art does not have the performance of biodegradation, in the field of biodegradable plastic processing The talc powder is added in the form of powder, causing serious powder pollution, which is inconvenient for feeding and measuring. The existing talc powder masterbatch is added to plastic products to improve the mechanical strength of plastic products, and other technical problems need to be further strengthened. The invention has the advantages of being biodegradable, reducing powder pollution, being convenient for feeding and measuring, and being able to improve the tear strength and tensile strength of plastic products, etc.

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