Low-cost transparent thermal-insulation high-elasticity self-cleaning refrigerator door seal

Abstract

The invention discloses a low-cost transparent thermal-insulation high-elasticity self-cleaning refrigerator door seal, which is prepared from the following raw materials: poly 4-methyl-1-pentene, polybutadiene, SEEPS rubber, indium oxide, a vinyl ester resin, poly 1-butene, animal and plant derived oil, EBS, a regulator, a stabilizer, polycarbosilane, polybornene, zinc borate, alpha-methylstyrene, nanometer silicon dioxide, konjac glucomannan and magnesium chloride. According to the present invention, the prepared self-cleaning refrigerator door seal has characteristics of high elasticity, good thermal insulation property, transparency, low cost, no folding, high elasticity, high welding strength, low-temperature resistance, no toxicity, no harm, high transparency, self-cleaning function,weather resistance and heat resistance.

Description

Technical field [0001] The invention belongs to the technical field of polymer materials, and specifically relates to a low-cost transparent heat-insulating high-elastic self-cleaning refrigerator door seal. Background technique [0002] Refrigerator sealing strip products require elasticity to play a sealing role. The refrigerator door seal product was originally created as a plant fiber product, which only played the role of heat insulation. Later, refrigerator sealing strip products continued to use elastic vulcanized rubber materials, but The rubber material has the defects of difficulty in coloring, complicated processing procedures, intolerance to aging and discoloration, and unrecyclable defects. Soon the rubber material was replaced by the plasticized PVC sealing material invented in the 1930s. PVC sealing material has the advantages of low price, simple production process, and high efficiency and continuous production. It has become the mainstream material for refrigerat...

AI Technical Summary

Problems solved by technology

Compared with PVC sealing strip materials, in terms of environmental protection, thermoplastic elastomer (TPE) materials are not as stated by some manufacturers. TPE is said to be harmless to the environment and human body, low pollution, non-toxic and odorless, and scraps can be recycled. The generality of molecular materials under reasonable use, and the white oil (white mineral oil) often used in TPE materials, has been approved by the Institute of Safety Evaluation of the China Food and Drug Control Institute according to the International Agency for Research on Cancer of the World Health Organization on October 27, 2017 The list of carcinogens announced in Japan (1987), it can be seen that the TPE refrigerator door seal material using white oil has potential food safety threats

The main threat of PVC door seal materials is that a large intake of plasticizers may interfere with endocrine, affect reproduction and development

In terms of material properties, thermoplastic elastomer (TPE) materials made of PP and SEBS, or TPV materials have light weight and high resilience, but compared with ordinary PVC materials, the cost and price are high, and the processing energy consumption is significantly higher than that of PVC materials. Ordinary PVC material, and this kind of door seal material has the disadvantages of generality, poor welding strength, crease white marks (stress whitening), and poor weather resistance and heat resistance, which affect daily use and appearance, while plasticized PVC This phenomenon does not occur on the refrigerator door seal, and the stress is rarely whitened or creased.

Refrigerator door seals often accumulate dust and grease during use, and if they are not properly treated, they will affect the appearance. Self-cleaning refrigerator door seal products are rarely heard in the market.

At present, in the field of refrigerator sealing strips, materials including TPE, TPV, TPS, and PVC are difficult to meet the requirements of refrigerator door seals with high elasticity, good thermal insulation performance, low cost, and good transparency. However, due to the increasing competition in the white goods market Intense, low-cost transparent door seals not only require beautiful appearance, comfortable senses, and easy maintenance, but also require that existing materials such as TPE, TPV, TPS, and PVC are difficult to meet. Low cost, high elasticity, welding Strength, weather resistance, heat resistance and low temperature resistance, non-toxic and harmless, and high transparency performance defects, those skilled in the art urgently need to develop a new type of low-cost transparent insulation and high-elastic refrigerator self-cleaning door seal material