Reasonable and correct use of butyl rubber instead of butyl rubber production of rubber products can not only ensure the quality of rubber products, but also significantly reduce the cost of raw materials, familiar with the molecular structure and performance characteristics of butyl rubber reclaimed, to grasp the use of butyl rubber reclaimed need to pay attention The main points, to improve the overall performance of butyl rubber reclamation products of great significance. Then butyl rubber recycling process should pay attention to what the problem?
1, clear butyl rubber purposes
Butyl reclaimed rubber is gas-tight, watertight, shock-absorbing, heat-resistant, weather-resistant and chemical-resistant so that it can produce highly air-tight and watertight rubber products that produce shock-absorbing materials, insulation hoses and corrosion- But if you plan to use butyl rubber reclaimed rubber production of highly demanding oil products, then forget it! Although butyl rubber has some resistance to animal and vegetable oils, but the resistance of mineral oil such as oil is weak, it can not be used to produce oil-resistant rubber products.
2, curing time and temperature settings
Butyl rubber reclaimed rubber is highly saturated, so the vulcanization rate is about 3 times slower than that of unsaturated natural rubber, so curing should be released to extend the vulcanization time and raise the vulcanization temperature.
3, butyl reclaimed rubber compatibility
Butyl reclaimed rubber and other types of rubber compatibility is poor, only the perfect combination of butyl rubber; In addition it is with a small amount of EPDM or EPDM reclaimed rubber and improve butyl rubber products Aging after the soft and sticky properties such as butyl inner tube will be combined with a small amount of EPDM, but EPDM reclaimed rubber in small quantities, usually less than the amount of butyl reclaimed rubber 8%.
4, butyl reclaimed rubber selection and blending ratio
In the use of butyl rubber reclaimed rubber production, when some manufacturers use butyl reclaimed rubber, some manufacturers use 30% of the reclaimed rubber or 50%, 70%, etc., which are made of butyl rubber itself The demand of the decision. If it is the production of some high standards of butyl rubber products, the need to properly reduce the amount of butyl rubber reclamation, and some low-grade butyl rubber products such as tube inner tube, the complete use of butyl rubber regeneration can be; in the choice of butyl rubber reclaimed, In addition to considering the price factor, but also need to focus on butyl rubber reclaimed index, rubber products and to choose the closest index of the reclaimed rubber in this way, which will not only reduce the dosage of raw rubber, it will not appear to use high price index Raw materials to produce cheap products, in order to reduce more raw material costs.
5, curing system settings
The use of butyl-based reclaimed rubber instead of butyl-based rubber for the production of rubber products now uses sulfur vulcanization systems as well as selective resin vulcanization systems, but this is determined by the performance requirements of butyl reclaimed rubber products, rather than at random. In actual production, if the use of butyl rubber reclaimed production needs to work under high temperature conditions of the products, you can use resin curing system; sulfur vulcanized butyl reclaimed rubber products are usually below 100 ℃ or room temperature, low temperature environment use.
6, butyl rubber regeneration agent added method
The role of butyl rubber and reinforcing agent between the weak and unsaturated rubber compared to weak, so in order to increase the rubber reinforcing effect and improve butyl rubber products, such as tensile strength, wear resistance and other indicators, you need to advance Heating, or adding appropriate chemical additives to enhance the strengthening agent of butyl rubber regeneration effect.
Use butyl rubber reclaimed rubber production when there are many areas that need attention, such as butyl rubber reclaimed rubber and other rubber adhesion when you need to increase the viscosity aids and so on. In the choice of butyl rubber reclaimed when the best choice can provide technical guidance of the regular renewable plastic manufacturers, so that whether the quality of the product problems, or product problems encountered in the production, can be quickly resolved.
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