Environment-friendly PVC modified outdoor sports floor, and preparation technology thereof

Abstract

The invention provides an environment-friendly PVC modified outdoor sports floor, and a preparation technology thereof. The sports floor comprises a calcium-free airtight foaming waterproof layer, a double polyester cloth stabilizing layer and a PVC wear-resistant sports surface layer which are arranged from bottom to top in sequence. According to the sports floor, original non-environment-friendly DOP plasticizers are replaced with environment-friendly DOTP plasticizers, so that the sports floor is more environmentally friendly; through high temperature heat treatment, the floor is denser, and the precipitation rate of the plasticizers is reduced; the floor is free of oil, and is not sticky or contaminated; the floor can be normally used for a long time outdoors; by adopting double polyester cloth as the stabilizing layer, the product size can be stabilized properly, and deformation is avoided; the thermal expansion and cold shrinkage proportion is reduced greatly; by adopting physical closed-cell foaming, no calcium powder is added, and the influence of water on the floor is reduced greatly; the original foaming technology is replaced with the physical closed foaming technology without the calcium powder added, so that materials are not degraded or structurally damaged after water absorption; and the service life is prolonged greatly.

Description

technical field [0001] The invention relates to the technical field of environmental protection equipment, in particular to an environmentally friendly PVC modified outdoor sports floor and a preparation process thereof. Background technique [0002] At present, there are some problems in PVC outdoor sports floor: 1. The existing technology uses non-environmental protection plasticizer DOP to plasticize PVC, which is not environmentally friendly, and it is applied outdoors, and cannot withstand changes in the outdoor environment, and a large amount of plasticizers are precipitated. , the surface is sticky, easy to stain, and the appearance is particularly poor, and it can hardly be used normally; 2. The existing technology uses ordinary glass fiber as a stable layer, and the material is prone to blistering, arching, thermal expansion and cooling when the outdoor environment changes The shrinkage ratio is too large, which affects normal use; 3. The existing technology mostly ...

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Problems solved by technology

[0002] At present, there are some problems in PVC outdoor sports floor: 1. The existing technology uses non-environmental protection plasticizer DOP to plasticize PVC, which is not environmentally friendly, and it is applied outdoors, and cannot withstand changes in the outdoor environment, and a large amount of plasticizers are precipitated. , the surface is sticky, easy to stain, and the appearance is particularly poor, and it can hardly be used normally; 2. The existing technology uses ordinary glass fiber as a stable layer, and the material is prone to blistering, arching, thermal expansion and cooling when the outdoor environment changes The shrinkage ratio is too large, which affects normal use; 3. The existing technology mostly uses calcium-containing foam layer as the buffer layer of the floor, and the foam is opened. A large amount of moisture is absorbed, and in a short period of time, the material structure decays and destroys, and the entire floor will be brittle and pulverized

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