Sealing rubber strip for building decorative doors and windows and preparation method thereof

Abstract

The invention discloses a sealing rubber strip for building decorative doors and windows and a preparation method thereof, and relates to the technical field of sealing rubber strips. The sealing rubber strip is prepared from the following raw materials of chlorinated polyethylene rubber, ethylene-propylene-diene monomer rubber, abietin, diacetone-acryloamide, polyethylene glycol bisricinoleate, carbon black N774, butyl acrylate, modified sepiolite powder, clay mica, sodium-based bentonite, anorthite powder, brucite fiber, azodicarbonamide, a scorch retarder, a coupling agent and a vulcanizer.The preparation method comprises the following steps of mixing the raw materials, extruding, and the like, so as to obtain the sealing rubber strip. The sealing rubber strip has the advantages that the preparation is simple and convenient, the environment-friendly effect is realized, and the elasticity is excellent; the excellent physical and chemical properties of tensile property, high tearingstrength, anti-seepage and anti-freezing properties, flame-retardant property, high temperature-resistant property and the like are realized, the heat and sound insulation properties, anti-vibration property and electromagnetic shielding property of the building decorative doors and windows are greatly improved, the service life is long, the application range is broad, and the practicality and reliability are realized.

Description

technical field [0001] The invention relates to the technical field of sealant strips, in particular to a sealant strip used for building decorative doors and windows and a preparation method thereof. Background technique [0002] Door and window sealant strip is a type of seal mainly used in plastic steel doors and windows, aluminum alloy doors and windows, wooden doors and windows and other architectural decoration doors and windows. Plastic steel door and window seal strips on the market are generally extruded from PVC, modified PVC, EPDM, elastomer seals, silica gel and other materials. In the production process of building decoration doors and windows, the input cost of sealing strips is relatively small, but its role cannot be ignored. The key to the structure of doors and windows lies in its sealing, and the sealing strips play a pivotal role; the sealing strips in the existing market The material of the strip is generally PVC modified, rubber, fiber, and fluff. The ...

AI Technical Summary

Problems solved by technology

In the production process of building decoration doors and windows, the input cost of sealing strips is relatively small, but its role cannot be ignored. The key to the structure of doors and windows lies in its sealing, and the sealing strips play a pivotal role; the sealing strips in the existing market The material of the strip is generally PVC modified, rubber, fiber, and fluff. The small molecule plasticizer in the modified PVC is easy to migrate to the surface of the product, resulting in poor elasticity of the sealing strip and hardening of the material, thus affecting The sealing performance of doors and windows; rubber sealing strips have the disadvantages of high energy consumption and heavy pollution in the rubber production process. After being used as sealing strips, some small molecule additives also have strong mobility and lead to elasticity. Defects such as deterioration, and are more harmful to the human body. At present, EPDM (ethylene-propylene-diene rubber) sealing strips are more commonly used in rubber, although EPDM itself has good heat resistance, chemical resistance, and water resistance. However, as an organic polymer material, it will gradually deteriorate in physical and mechanical properties due to the combined effects of external environmental factors (such as light, heat, oxygen and corrosive media, etc.) Use value, on the surface, it is characterized by cracking, stickiness, hardening, softening, powdering, discoloration and mildew, etc., which will bring great inconvenience to people's normal life and office

However, the existing sealing strips of medium fiber and fluff are easy to absorb dust, have low strength, low elasticity, and poor sealing performance. Therefore, developing a door and window sealing strip that can overcome the above defects has become a technical problem to be solved urgently by those skilled in the art.

Images