Rubber Chem Encyclopedia

The role of common silica fillers in reclaimed rubber products 2

Create Date:2020-07-16 08:54:54Click volume:131
The role of common silica fillers in reclaimed rubber products 2

Silicate fillers are a large category of rubber fillers. There are many categories. Different varieties of silicate fillers have different roles in recycled rubber products. Rubber product manufacturers fully understand that various silicate rubber fillers in recycled rubber The different roles in this will help manufacturers further improve the processing performance of recycled rubber products, improve product quality, and reduce more raw material costs and production costs. The editor continues to discuss with you the role of silicate rubber fillers in recycled rubber products today.

4. Mica powder

The main components of mica powder are SiO2 and Al2O3. It has good elasticity, strong toughness, heat resistance, acid and alkali resistance, corrosion resistance, and high insulation. It is a commonly used functional rubber filler in rubber products, which can improve the mechanical strength of rubber products and enhance rubber compounds. Toughness, adhesion, anti-aging and corrosion resistance. The use of mica powder in some reclaimed rubber products with strict airtightness requirements such as inner tubes, bladders, and lifesaving products can significantly improve the airtightness of the products, especially wet mica powder.

Flaky mica powder can be used as a reinforcement and skeleton material in rubber to significantly improve the tensile strength, tear strength, elasticity, hardness, wear resistance and dimensional stability of recycled rubber products; it can also inhibit other rubber additives in Migration in reclaimed rubber delays aging. The surface of the mica powder wafer is smooth and the friction coefficient is extremely small. It can be used as a release agent for recycled rubber products. The isolation effect is obvious, which is helpful for the release of recycled rubber products and improves the surface smoothness of the finished products. Mica powder has extremely high resistance and can be used in the production of recycled rubber wires and cables or other insulating rubber products.

5. Feldspar powder

The feldspar powder commonly used in the rubber industry is an oxide of anhydrous silicic acid, sodium, potassium, and calcium made by removing silica and mica and then crushed by natural granite after flotation. It is only used as a filler 2LLYY716 in the production of rubber products. It has no reinforcing effect, and has the function of preventing agglomeration in reclaimed rubber. In actual production, there are not many recycled rubber products filled with feldspar powder.

6. Coal gangue

Coal gangue is a mixture of silicon oxide and magnesium oxide. It is commonly filled with coal gangue powder in the rubber industry. It is well dispersed in rubber and has semi-reinforcing properties. When using reclaimed rubber to produce rubber products, filling a certain amount of coal gangue powder can replace part of the carbon black and act as a reinforcing agent. In actual production, the reinforcing effect of coal gangue powder modified with CT-136 modifier in rubber is close to that of silica, which can significantly improve the mechanical properties of reclaimed rubber products.

When reclaimed rubber products are filled with silicate rubber fillers, the variety of fillers must be reasonably selected according to actual needs, and the amount of fillers should be reasonably controlled to avoid problems such as decreased mechanical strength or frost spraying of reclaimed rubber products due to excessive fillers.