Rubber waterproofing membrane is a kind of waterproof material made of natural rubber or synthetic rubber as the main component, adding an appropriate amount of additives and fillers, and through plastic, mixing, calendering or extrusion molding processes. Butyl reclaimed rubber E4LYY73 retains the good heat resistance, ozone resistance, chemical corrosion resistance and other characteristics of butyl rubber, and can be used alone or in combination with butyl rubber, EPDM rubber, EPDM reclaimed rubber, etc. to produce rubber waterproofing membranes, effectively reducing the cost of raw materials under the premise of ensuring the performance of waterproofing membranes.
1. The application of butyl reclaimed rubber in waterproofing membrane
Rubber membranes can be divided into vulcanized and non-vulcanized waterproofing membranes.
(1) The application methods of butyl reclaimed rubber in vulcanized waterproofing membrane mainly include: the use of butyl reclaimed rubber alone, the combination of butyl reclaimed rubber and butyl rubber, the combination of butyl reclaimed rubber and EPDM rubber, and the combination of butyl reclaimed rubber and EPDM reclaimed rubber to produce waterproof membrane; According to the performance requirements of the waterproofing membrane, the mixing ratio of butyl reclaimed rubber is reasonably determined, and the formula is appropriately adjusted to further optimize the quality of the finished product while reducing costs.
(2) The production process of non-vulcanized waterproofing membrane is simple, no vulcanization is required, and butyl reclaimed rubber can be used alone to process waterproofing membrane with fillers, antioxidants, softeners, etc., or butyl reclaimed rubber/asphalt blending to produce non-vulcanized waterproofing membrane to reduce the cost of raw materials.
2. Butyl reclaimed rubber produces vulcanization formula for waterproofing membranes
(1) Butyl reclaimed rubber produces vulcanized waterproofing membrane
Butyl rubber/butyl reclaimed rubber combined with the production of waterproof membrane vulcanization formula: 65 parts of butyl rubber, 35 parts of butyl reclaimed rubber, 4 parts of zinc oxide, 1.5 parts of stearic acid, 1 part of antioxidant BLE, 1 part of anti-solar aging agent, 55 parts of carbon black N880, 15 parts of easily mixed tank black, 4 parts of naphthenic oil, 0.4 parts of accelerator M, 1.3 parts of sulfur; Total 183.2 copies.
Butyl reclaimed rubber/EPDM reclaimed rubber combined to produce waterproof membrane vulcanization formula: 85 parts of butyl reclaimed rubber, 15 parts of EPDM reclaimed rubber, 2 parts of zinc oxide, 0.4 parts of stearic acid, 0.3 parts of accelerator M, 1 part of accelerator TMTD, 0.6 parts of accelerator ZDC, 1.1 parts of sulfur; Total 105.4 copies.
The combination of butyl reclaimed rubber and a small amount of EPDM reclaimed rubber to produce vulcanized waterproofing membrane can improve the vulcanization performance and aging resistance of butyl reclaimed rubber.
(2) Vulcanization formula for non-vulcanized waterproofing membrane produced by butyl reclaimed rubber: 100 parts of butyl reclaimed rubber, 1 part of antioxidant RD, 1 part of antioxidant 4010, 2 parts of paraffin, 45 parts of light calcium carbonate, 20 parts of clay, 6 parts of paraffin oil; 175 copies.
Butyl reclaimed rubber is an important raw material in the production of rubber waterproofing membrane, choosing the right butyl reclaimed rubber, reasonably adjusting the proportion of butyl reclaimed rubber and the formula of waterproofing membrane, can balance the quality and finished products, meet the waterproof needs of more use scenarios, expand the scope of use, and improve economic benefits.
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