Special material for building block type wood-plastic bricks and preparation process of special material

Abstract

The invention discloses a special material for building block type wood-plastic bricks and a preparation process of the special material. The special material comprises the following components by weight: 20-45% of polypropylene, 53-70% of wood meal (or bamboo meal), 0.2-2.0% of a lubricant, 0.1-2.0% of an antimicrobial agent, 0.1-15% of an anti-wear agent, 0.1-8.0% of a coupling agent, 1.0-5.0% of a hygroscopic agent, 0.1-2.0% of an antistatic agent, and 0.1-5.5% of other assistants. The preparation process of the special material comprises the following steps: proportionally weighing polypropylene, the wood meal (or bamboo meal), the lubricant, the antimicrobial agent, the anti-wear agent, the coupling agent, the hygroscopic agent, the antistatic agent and other assistants, mixing in a mixer at a low speed for 10min, mixing and extruding in a double screw extrusion machine in the condition of a certain strength shearing screw assembly at a low rotation speed, water ringing or pelleting under water, and dewatering to obtain the special material for building block type wood-plastic bricks. The special material for building block type wood-plastic bricks can be subjected to color matching as required, can prevent electrostatic adsorption of dust, adopts recycled raw materials, has low cost and is convenient for processing, can use ordinary injection molding machine and molds, is convenient for batch production and popularization, meets the low-carbon, economic and environment-friendly characteristics, replaces plastic raw materials and wood as well as fired bricks, and is very useful.

Description

technical field [0001] The invention relates to a composite material of wood powder (or bamboo powder) and a thermoplastic polymer plastic material, and more specifically relates to a low-carbon green environmental protection building block type wood-plastic brick special material for injection molding. The invention also relates to a method for making the low-carbon green environmental protection building block type wood-plastic brick special material for injection molding. Background technique: [0002] Most of the wood-plastic materials currently on the market are compounded with wood powder or wood fiber (bamboo powder, bamboo fiber) and plastic, and the proportion of wood is not high, so it is difficult to achieve the effect of wood products. The fluidity is not good, and it is generally inconvenient to be used in injection molding, a low-cost mass production method. It is only limited to extruding some products with relatively simple structure and low strength, which l...

AI Technical Summary

Problems solved by technology

[0004] The bricks in the current construction market are generally fired with special soil or other mineral materials. Although the price is low, it wastes mineral resources, even infringes on cultivated land, consumes a lot of energy, pollutes and damages the environment; at the same time, transportation, construction The cost of other links is high; due to the large proportion, the cost of the building due to the load-bearing problem is high, the risk of damage caused by the earthquake is high, etc., a series of shortcomings