The rubber sole has good softness, high elasticity and obvious shock absorption effect, and is widely used in the preparation of sports shoe outsoles. Traditional sports shoe outsoles generally use natural rubber, butadiene rubber or styrene butadiene rubber as the main raw material. At present, many sports shoe sole manufacturers have begun to add appropriate amount of vulcanized rubber powder to the formulation to reduce the cost of raw materials and further improve the wear resistance of the sole. In actual production, what role does vulcanized rubber powder play in sports shoe soles? How much rubber powder is appropriate for the production of sports shoe soles?
1. Usage of vulcanized rubber powder in sports shoe soles
Vulcanized rubber powder has certain elasticity and reinforcement, and is usually used as an organic reinforcing agent in the production of sports shoe soles; the amount of reinforcing agent and filler in the formula of sports shoe soles added with vulcanized rubber powder can be appropriately reduced to ensure the sole The performance of 2YLYY322 can effectively reduce the cost of raw materials. In actual production, in addition to transparent sports soles, vulcanized rubber powder can be used for general molded outsoles of sports shoes. When the fineness of the rubber powder is between 40-80 mesh, it is more advantageous in cost and performance.
2. The amount of vulcanized rubber powder in the sole of sports shoes
The outsoles of sports shoes are generally produced with natural rubber/synthetic rubber and rubber materials, and the rubber content is controlled between 40% and 55%. When filling vulcanized rubber powder to reduce the production cost of shoe soles, rubber product manufacturers need to reasonably control the rubber content of shoe soles. In actual production, the index requirements of sports shoe soles are different, the ratio of natural rubber/synthetic rubber used is different, and the amount of vulcanized rubber powder is also different.
(1) The amount of vulcanized rubber powder in sports shoe soles mainly made of natural rubber is large, and the mixing amount can be controlled between 20-40 parts, which effectively reduces the cost of raw materials.
(2) Excessive amount of vulcanized rubber powder in synthetic rubber-based sports shoe soles will cause a significant decrease in the physical properties of the soles, and it is generally controlled between 10-15 parts. Tests show that when a small amount of natural rubber and butadiene rubber are used together to produce sports shoe outsoles, the amount of vulcanized rubber powder does not exceed 15 parts, and the tensile strength, elongation at break, tensile stress, hardness, tear strength and other indicators of the finished product change Not big.
3. The physical and mechanical properties of sports shoe soles vary with the amount of rubber powder
In actual production, when vulcanized rubber powder is mixed with the same kind of rubber material, the tensile strength, elongation at break and tearing strength of the vulcanized rubber will decrease with the increase in the amount of rubber powder; when the amount of vulcanized rubber powder When a certain value is exceeded, the various indicators of the sports shoe soles are significantly reduced, so the amount of vulcanized rubber powder in the sports shoe soles should be controlled reasonably. Later, the editor will have the opportunity to continue discussing with you the specific usage of vulcanized rubber powder in sports shoe soles.
Exclusive original article [commercial authorization] reprint, excerpt and excerpt in any form are prohibited without written authorization. Focus on Hongyun rubber: learn the process formula and raw material technology of producing rubber products from recycled rubber to help you reduce costs and increase profits