The waterproof membrane produced by using butyl rubber as the main raw material has excellent heat resistance, aging resistance and acid and alkali resistance, and can be used at a relatively high temperature. It is also prone to aging, especially ozone resistance, when exposed to the air for a long time. Butyl reclaimed rubber is the product of recycling and processing of waste butyl inner tube, retaining the basic performance characteristics of butyl rubber, and the price is much lower than that of butyl rubber. It can replace some butyl rubber to produce rubber waterproofing membrane, and ensure the use of waterproofing membrane. Reduce production costs on the premise of performance and service life.
Butyl rubber and butyl reclaimed rubber are used together to produce waterproofing membrane reference formula
80 parts of butyl rubber, 40 parts of butyl reclaimed rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 2 parts of antioxidant, 20 parts of high abrasion resistant carbon black, 75 parts of fine particle thermal cracking carbon black, naphthenic oil 6 parts, 0.5 part of accelerator M, 1.5 parts of accelerator TMTD, 1.8 parts of sulfur; total: 233.8 parts.
Butyl rubber waterproofing membrane has good air tightness, weather resistance, ozone resistance, heat resistance, acid and alkali resistance, and is widely used as roof waterproofing material for various buildings; due to various indicators of waterproof membranes used under different conditions Certain differences, so when using butyl rubber and butyl reclaimed rubber to produce waterproof membranes, the indicators and dosages of IIR reclaimed rubbers need to be adjusted according to actual needs. Try to choose high-glued, high-fineness butyl reclaimed rubber. Appropriately increase the amount of reclaimed rubber in the waterproof membrane and reduce more production costs.
Rubber waterproofing membranes have certain requirements on strength, elongation, tear resistance and flexibility. Not only butyl rubber and butyl reclaimed rubber are needed, but also various compounding agents are needed. Among them, high abrasion resistant carbon black and fine particles The reinforcing filling system composed of thermal black carbon can impart good tensile strength, tear strength, wear resistance, heat resistance, resilience and compression set resistance to the rubber compound, and improve the physical and mechanical properties of the waterproof membrane. Aging resistance; naphthenic oil can improve the elasticity and plasticity of the rubber compound, further improve the processing technology of the butyl rubber/recycled rubber and the rubber compound, and improve the elasticity and flexibility of the butyl waterproof coil.
The waterproof membrane produced by using butyl rubber and butyl reclaimed rubber is better in heat resistance and acid and alkali resistance than the waterproof membrane of other materials. It can resist water infiltration and penetration during use, and has low hygroscopicity. Impervious to water, the raw material cost and the power consumption during the production process are lower than that of the pure butyl rubber waterproofing membrane, which is a cost-effective waterproof coil production method.
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