The use of butyl reclaimed rubber can replace butyl rubber to produce a variety of high-tightness, water-tight rubber products, shock-absorbing rubber products, etc., significantly reducing the cost of raw materials, but butyl reclaimed rubber and butyl rubber still have some differences, so only reasonable The design of butyl reclaimed rubber formulations can maximize the advantages of butyl regenerated rubber and neutralize the disadvantages. When designing formulas for butyl regenerated rubber products, it can be considered from the following aspects:
1, butyl reclaimed rubber products indicators. Butyl reclaimed rubber is used in a wide range of applications. It can produce a variety of rubber products with special applications. Different rubber products have different requirements for butyl reclaimed rubber raw materials. At this time, rubber product manufacturers are demanding many butyl regenerated rubber products. The product with the closest index to its product is selected; if the butyl regenerated rubber itself has a certain gap with the butyl rubber product itself, the butyl rubber may be added in an appropriate amount according to the amount of the butyl reclaimed rubber. Therefore, the first step in the design of the butyl reclaimed rubber formulation is to select the butyl reclaimed rubber product and determine its use ratio.
2, butyl reclaimed rubber curing system design. Butyl regenerated rubber products, like other rubber products, can be vulcanized using sulfur vulcanization systems. The physical and mechanical properties of vulcanized rubber vulcanizates after vulcanization with sulfur vulcanization systems are better. In addition, there is an increasing number of butyl regenerated products. The rubber manufacturers began to choose resin vulcanization. The vulcanization performance and heat resistance of the butyl reclaimed rubber products after vulcanization of the resin vulcanization system are better. The two vulcanization systems each have their own advantages. The butyl reclaimed rubber product manufacturers must choose according to their own needs. Suitable curing system vulcanization.
3, butyl regenerated rubber products softener. The production of any kind of rubber products is inseparable from the softeners. When butyl reclaimed rubber is used to produce rubber products, most of them are softened with petroleum-based softeners, such as paraffin oil and lipid plasticizers; softeners can reduce butyl The tensile strength, tensile stress, hardness, and Mooney viscosity of the reclaimed rubber compound improve the processing performance of the rubber compound and prolong the scorch time; however, if the softener is excessive, the permanent compression set of the butyl reclaimed rubber product will increase, and the resistance will increase. Reduced heat, so the amount of softener in the formula should be appropriate.
4, butyl reclaimed rubber products reinforced filling system. Carbon black is the most commonly used reinforcing agent in the rubber product industry. The addition of carbon black in butyl reclaimed rubber products can increase the tensile strength and tear strength of the butyl regenerated rubber vulcanizate. The greater the amount of carbon black, The higher the tensile stress and hardness of the butyl reclaimed rubber vulcanizate, the higher wear-resistant carbon black, high-abrasion furnace black and semi-reinforcing carbon black used in the butyl reclaimed rubber products improve the butyl inner tube and butyl. The mechanical properties of the shock-absorbing rubber and butyl rubber sheet, among which the butyl regenerated rubber pear rubber compound using the semi-reinforcing furnace black as a reinforcing agent has the smallest compression set.
The butyl reclaimed rubber reinforcing filler system needs a filler in addition to the reinforcing agent. Generally, when producing light-colored butyl rubber products, it is required to add a white filler, such as white carbon black, talcum powder, and light calcium carbonate, etc. Carbon black can improve the strength and wear resistance of butyl reclaimed rubber products. Talc powder can improve the tensile strength and tensile stress of butyl regenerated rubber vulcanizate. Light calcium can reduce raw material costs. The selection of anti-aging systems for butyl reclaimed rubber products will directly affect the service life of rubber products.
However, when designing a butyl reclaimed rubber product formula, it is necessary to consider the characteristics and effects of various compounding agents, as well as the mutual influence of compounding agents on the indicators and the direct interaction of various compounding agents. For example, we use butyl regenerated rubber to produce For rubber products with higher hardness, if the amount of rubber oil is too much, the elasticity and plasticity of the reclaimed rubber products will be mentioned, but this will reduce the hardness of the products.
With respect to the formula design of butyl reclaimed rubber products, specific analysis should be made on the specific problems of rubber product manufacturers. It is better for professional technicians to finalize the production formula after multiple tests to reduce the raw material cost of butyl rubber products as much as possible.
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