Production method for high-toughness building template

Abstract

The invention relates to a production method for a high-toughness building template. According to the production method, the building template is prepared from recycled regenerated plastic and / or rubber serving as a main raw material, so that the production cost of the building template is lowered; in the production method, a mixture of rubber and an auxiliary is blended and granulated to obtain a rubber modified material, and the rubber modified material and plastic particles are fused and blended, so that the auxiliary, in spite of a liquid state or a solid state, can be effectively mixed with the rubber during blending and can enter the rubber; therefore, a network structure in the rubber can be released, and the processing flowability, the compatibility and the dispersion uniformity of the rubber and the plastic particles during fusing and blending are improved, and the toughness of the building template is also enhanced; furthermore, the rubber modified material is of a large particle shape, so that the environment friendliness of the technology is high. The production method has another advantage that after being rejected, the building template can be recycled to serve as a raw material for processing a new building template, so that resource recycling is realized.

Description

technical field [0001] The invention relates to the field of building construction templates, in particular to a production method of high-toughness building templates. Background technique [0002] The building templates used in building construction mainly include wooden, bamboo, steel, plastic building templates and composite building templates formed by compounding several of the above-mentioned building templates. Although steel building formwork is strong and has a high number of uses, it is expensive, easy to rust, heavy, and difficult to transport; bamboo and wooden building formwork are light in weight, wide in width, and have few seams, but their strength is relatively low, and they are not moisture-proof and waterproof. It is easy to mildew and rot, and consumes green resources. In contrast, plastic building formwork has the advantages of low cost, light weight, high reusability, stainless, non-stick cement, and waterproof. [0003] However, plastic building for...

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Problems solved by technology

[0003] However, plastic building formwork also has disadvantages: one of its disadvantages is poor rigidity and easy deformation, which can be improved by adding reinforcing fibers to plastic building formwork raw materials for reshaping; Insufficient toughness, easy to be damaged in high-altitude operation, this can be improved by adding toughening agent

However, in this patented technology, the waste rubber powder, the active dispersant and the compatibilizing modifier are stirred and mixed at room temperature, and the active dispersant can only penetrate into the surface layer of the waste rubber powder to make the network structure on the surface of the waste rubber powder However, if there are too many network structures inside the waste rubber powder that cannot be relaxed, it will affect the processing fluidity and melt blending effect when blending with plastics, so the The patented technology uses waste rubber powder with a 100-mesh sieve (below about 150 micron particle size) as raw material to reduce the internal unrelaxed network structure; it is also based on the same reason, and the waste rubber particles are large in size and internal network The structure cannot be fully relaxed, so this method is not suitable for melt blending with plastics

The disadvantages of direct melt blending of waste rubber powder and plastic granules are: firstly, since the waste rubber powder is a powder, it will inevitably pollute the production environment of rubber and plastic blending, and the production of waste rubber powder is not only the use of crushers, but also A powder machine is required, so the production of waste rubber powder will also pollute the environment and cause damage to the health of operators; secondly, the liquid additives added to waste rubber powder, such as some active dispersants, can still enter the waste rubber powder through infiltration. The surface layer or inside of the rubber powder, but some solid additives, especially some compatibilizing modifiers, cannot enter the waste rubber powder, which makes it difficult to form a uniform blending effect when the waste rubber powder and plastic particles are melt blended

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