A washing machine rubber door seal

Abstract

The invention discloses a rubber door sealing ring for a washing machine. The rubber door sealing ring is produced by using raw materials including a base material, a reinforcing and filling system, a softening agent, a colorant, a processing aid, a curing system and a protection system, wherein ethylene-propylene-diene rubber is used as the base material; silicate is used as the reinforcing and filling system; the softening agent comprises white oil, resin and paraffin; a color masterbatch is used as the colorant; the processing acid comprises a fatty acid emulsifier, fatty acid and calcium oxide; the curing system comprises 2-mercaptobenzothiazole, dipentamethylenethiuram tetrasulfide and 4, 4'-dithiodimorpholine; and the protection system comprises 2-benzimidazolethiol. Sulphur is replaced with 2-mercaptobenzothiazole, dipentamethylenethiuram tetrasulfide and 4, 4'-dithiodimorpholine to cure, so that the effects of avoiding direct sulphur reaction, eliminating the hidden danger of curing reversion and prolonging the service life of the door sealing ring are achieved during high-temperature curing and thermo-oxidative ageing; and meanwhile, a nano-scale flake-like silicate substance is used as the reinforcing and filling system, so that the mechanical and physical properties of the rubber door sealing ring can be remarkably improved.

Description

technical field [0001] The invention relates to rubber products, in particular to a rubber door seal ring for a washing machine. Background technique [0002] At present, the formula design of rubber products is the most important link in the production of the rubber industry. Its specific formula determines the physical properties, functions, life and productivity of rubber products. This is the most important aspect of technical exchanges in the rubber industry. topic. The door seal of the washing machine is the core accessory of the drum type washing machine, which is directly related to the quality and life of the whole washing machine. Therefore, the technical requirements for the door seal are extremely strict, and there are strict standards for appearance, physical properties, and service life, such as hardness and tensile strength. Strength, elongation, permanent deformation, tear strength, abrasion, acid and alkali resistance, yellowing resistance, oil resistance, ...

AI Technical Summary

Problems solved by technology

The door seal of the washing machine is the core accessory of the drum type washing machine, which is directly related to the quality and life of the whole washing machine. Therefore, the technical requirements for the door seal are extremely strict, and there are strict standards for appearance, physical properties, and service life, such as hardness and tensile strength. Strength, elongation, permanent deformation, tear strength, abrasion, acid and alkali resistance, yellowing resistance, oil resistance, ozone resistance, antibacterial and environmental protection grade, etc. and these performance requirements should be controlled at a small change rate within ten years Within the scope of change, it is difficult for the previous formula design to meet these requirements, because the rubber is prone to vulcanization and reversion. The rubber gradually loses its elasticity, which leads to the decline of the above physical and mechanical properties, sticky surface, and cracks, so that the performance and sealing function of rubber products will be greatly reduced