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Rubber foam soles, rubber foam soles, wear-resistant anti-slip

The rubber foam base is a base fabric made of a closed cell or nike discount store open cell foam material made of natural or synthetic rubber. Half a century ago, people used this material in shoes, sports shoes, travel shoes, liberation shoes, and casual shoes. It has excellent elasticity, black nike shoes good tear resistance, aging resistance, corrosion resistance, electrical insulation and other properties. When the rubber is produced from a solid dry rubber, it is usually filled with a foaming agent and other additives in rubber to perform a chemical decomposition reaction at the vulcanization temperature to decompose the gas. It is very important that the rubber expands and foams to form microporous rubber so that the microporous rubber with good properties can be used to select the type of foaming agent, determine the amount of the foaming agent, and help the blowing agent. In general, the foaming agent is expected to meet the following requirements: the stability of acid, alkali, nike shox clearance light and heat during storage, good, odorless, non-toxic, and the disadvantages of pollution-free discoloration of foamed microporous rubber. The gas decomposition can be completed in a short time, and the amount of gas generated can be controlled. The powdery blowing agent should have a small particle size and be uniformly dispersed in the rubber material without affecting the vulcanization process of the rubber. The price is low.

Rubber sponge midsole is a low-priced rubber product. The pursuit of low cost, the use of inorganic and organic foaming agents together, reducing the amount of expensive organic foaming agent can meet nike shox clearance the performance requirements, but also reduce costs. Using low-cost sodium bicarbonate as a foaming agent, it decomposes carbon dioxide gas. The gas permeability in rubber can only create open-celled sponges. It is difficult to produce closed-cell sponges with small pore size and uniform pore structure. When organic blowing agents are used in combination, sponges with a uniform pore structure and a uniform pore size can be prepared; the decomposition temperature of the blowing agent H is higher but bicarbonate is Sodium can gradually decompose and produce carbon dioxide raw gas to make rubber foam at 130 degrees Celsius; foaming agent H can increase its thermal decomposition temperature greatly after adding foaming agent in rubber, and stearic acid and alum can be added After the foaming agent not only can reduce the foaming temperature, but also can make the foaming agent fully escape the gas, reduce the amount of the foaming agent H, reduce the cost and increase the foaming quality; the alum is the potassium aluminum sulfate which brings the crystallization water. It is to help 80 C foaming agent, at a low temperature, alum containing crystallized water above the high temperature, crystal water gradually precipitated such crystal water can promote or accelerate the thermal decomposition of the blowing agent;

Sodium bicarbonate, alum, foaming agent, etc. should be studied into fine powder, and then mixed with 200 mesh sieve before mixing. Otherwise, they will be dispersed unevenly, which will lead to uneven foaming in the local area of ??the rubber material. Poor pore structure; rubber vulcanization rate and foaming speed should be roughly synchronized or in parallel, in order to get a good pore structure of the sponge glue. If the foaming agent begins to decompose the gas, the rubber material has been deeply vulcanized, and the gas expansion force of the foaming agent will hardly overcome the strength of the rubber on the pore wall, thereby binding the foaming, resulting in a hard sponge, a low elasticity, and wearing. Uncomfortable shoes, if the start vulcanization is too slow, a lot of gas blowing agent decomposition, the rubber is in the state of sulfur, low strength, making the pores collapse or burst sponge eyes; temperature is very sensitive to foam rubber foam with a rubber Its foaming rate is not the same at different temperatures. It requires that the temperature change or the temperature of the zone is controlled within the range of 1C to 2C. Otherwise, the hole structure and hardness of the sponge rubber product will be uneven; Should be frequently checked for mixed rubber. The foaming condition influences the softness, elasticity and abrasion resistance of the sponge because of the foaming rate.