Wood-grain-like color master batch, and preparation method and application thereof

Abstract

The invention discloses a wood-grain-like color master batch which comprises the following components in percentage by weight: 60-93% of PVC (polyvinyl chloride) resin, 1-18% of pigment, 0.5-14% of dispersant and 3-15% of other assistant. The preparation method comprises the following steps: a) proportionally mixing the components in a high-speed mixer; and b) carrying out melt blending extrusion on the mixture with a single screw extruder at the screw bolt speed of 14-27RPM at the melting temperature of 120-170 DEG C, uniformly dispersing the pigment in the carrier resin through the shearing and compounding of the screw bolt, naturally cooling, granulating, and airing to obtain the wood-grain-like color master batch. The wood-grain-like color master batch has the advantages of low toner consumption, favorable temperature tolerance and excellent dispersibility; when being used for preparing a wood-grain-like wood-plastic composite material, the wood-grain-like color master batch is easy to operate and control and has favorable compatibility with the PVC-based base material; the wood-grain-like wood-plastic composite material has highly simulated wood appearance, natural and clear grains, bright surface color and favorable wood-grain-like effect, and thus, is an ideal wood-like wood-plastic product.

Description

technical field [0001] The invention relates to the field of coloring of wood-grain-like profiled materials, in particular to a wood-grain-like masterbatch, a preparation method thereof, and an application in wood-grain-like wood-plastic composite materials. Background technique [0002] As a new type of environmentally friendly material, imitation wood grain wood-plastic composite material has been widely used for its advantages of light weight, good touch, corrosion resistance, moisture resistance, insect resistance, and flame retardancy. But the defect of existing imitation wood-grain masterbatch is: the carrier resin selected by imitation wood-grain masterbatch has poor compatibility with the base material to be colored, poor temperature resistance, large fluctuations in wood grain, and the prepared imitation wood Texture products are unstable. [0003] Patent CN 1386623 discloses that on the twin-screw plastic profile extruder production line, special metering equipme...

AI Technical Summary

Problems solved by technology

But the defect of existing imitation wood-grain masterbatch is: the carrier resin selected by imitation wood-grain masterbatch has poor compatibility with the base material to be colored, poor temperature resistance, large fluctuations in wood grain, and the prepared imitation wood Textured products are unstable

However, this method has high requirements on the temperature of the production workshop. If the workshop temperature is too low, it will make it difficult to input the color paste; the preparation of the color paste is troublesome and the wood grain of the imitation wood grain special-shaped material product is difficult to control, and large wood grain flowers will appear. problem, resulting in poor imitation wood grain effect

At present, there are few research reports on imitation wood grain color masterbatch for PVC-based imitation wood grain profiles

Images