Process for continuous forming preparation of thermoplastic elastomer composite materials

Abstract

The invention relates to a continuous foaming manufacturing method of a thermoplastic elastomer composite material, which is to add a compounding agent, a foaming agent and a bridging agent to a composite material with a polymer main material including a thermoplastic elastomer as a base material After waiting, carry out kneading and sheet-out processing to produce a first outer layer sheet with a predetermined width and thickness, and cool it for standby; then another composite material that includes thermoplastic elastomer polymer main material as the base material is added and compounded. agent, foaming agent and bridging agent, etc., carry out the same kneading treatment, and when rolling out the sheet to form a second outer layer sheet, sequentially align a reinforcing layer and the first outer layer sheet Put it on the second outer layer sheet in the sheet to form a sandwich sandwich structure; after the combined structure is slightly pressed by the rollers, it is sent into an oven for foaming treatment under normal pressure; the foaming process is completed Afterwards, it is cooled and wound up with a wheel shaft to produce a roll of continuous foamed material sheet.

Description

technical field [0001] The invention relates to a method for producing foamed materials, in particular to a method for continuously producing a continuous foamed material with a sandwich sandwich structure by using a traditional rubber continuous foaming method under normal pressure. Background technique [0002] Generally speaking, traditional foaming materials can be roughly divided into two types according to the raw materials used: plastic foaming materials and rubber foaming materials. Due to the different material properties of these foaming materials, their application fields are also different. same. Taking traditional plastic foaming materials as an example, in its foaming technology, ethylene-vinyl acetate copolymer (EVA) or a blend of EVA and polyethylene (PE) is generally used as the main raw material. The produced plastic foam material not only has the advantages of being easy to form into other complex shapes in the subsequent processing procedures, but also h...

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Problems solved by technology

Taking traditional plastic foaming materials as an example, in its foaming technology, ethylene-vinyl acetate copolymer (EVA) or a blend of EVA and polyethylene (PE) is generally used as the main raw material. The produced plastic foam material not only has the advantages of being easy to form into other complex shapes in the subsequent processing procedures, but also has the advantages of simple formula and easy coloring. In addition, due to its foaming process and related The application of the product is quite mature, so most of the shoe materials or floor mat materials that can be seen in daily life are made of this kind of plastic foam material. However, the disadvantage is that the plastic foam material itself is elastic and non-slip. Poor sex

[0003] As for the traditional rubber foam material produced by traditional rubber continuous foaming technology under normal pressure (ie atmospheric pressure), it uses PVC / NBR blend or other rubber materials as the main raw material. Although the rubber foam material produced can make up for the shortcomings of the aforementioned plastic foam materials, it has better elasticity and anti-slip properties, and is often used in the production of products such as mouse pads, insoles or some floor mats. However, this The formula of this kind of rubber foam material is relatively complicated, and it is very easy to cause environmental pollution due to the dust generated in the manufacturing process.

In addition, this kind of rubber foam material often has large foaming holes, resulting in a decrease in its tensile strength, so it cannot be used in occasions that need to withstand high tensile forces, which limits its application range

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