Rubber waterproof materials can effectively prevent rain, snow and water from infiltrating into buildings. They are generally processed from rubber or plastics such as neoprene, butyl rubber, EPDM and CPE. Rubber-plastic blending can be selected. In actual production, butyl reclaimed rubber retains the basic performance characteristics of butyl rubber, and can replace a certain proportion of butyl raw rubber to produce rubber waterproof materials, effectively reducing the cost of raw materials.
1. Characteristics of butyl rubber waterproof material
With butyl rubber as the main raw material, with the coordination of various additives, the waterproof material processed by mixing, refining, calendering and other processes has good weather resistance, ozone resistance, acid and alkali resistance, heat aging resistance 2ELYY426, etc. Features, can withstand low temperature -40 ℃, high temperature 120 ℃, non-flammable during use, good insulation. When butyl reclaimed rubber replaces butyl rubber to reduce the production cost of waterproof materials, choosing the appropriate blending method can reduce more costs on the premise of ensuring product quality.
2. Use butyl reclaimed rubber alone to produce waterproof materials
Butyl reclaimed rubber has the basic performance characteristics of butyl raw rubber, strong air tightness, heat resistance, ozone resistance, and aging resistance, and can be used alone in the preparation of various waterproof materials, such as waterproof membranes. When completely using butyl reclaimed rubber to produce rubber waterproof membrane, it is recommended to use sulfur vulcanization system, appropriately reduce the amount of sulfur, and use thiuram or dithiocarbamate high-efficiency accelerators, if necessary, together with thiazole accelerators. Butyl reclaimed rubber waterproof material reinforcement system is recommended to use high wear-resistant carbon black, thermal carbon black; use naphthenic oil to soften, etc.
In actual production, the mechanical properties and ozone resistance of butyl reclaimed rubber waterproof materials are close to those of neoprene rubber waterproof materials.
3. Butyl rubber and other rubber and plastic materials are used together to produce waterproof materials
Butyl reclaimed rubber can be used in combination with butyl rubber, EPDM rubber or neoprene rubber to produce waterproof materials with better comprehensive performance. For example, EPDM rubber has excellent high and low temperature resistance, excellent anti-aging properties, and has good resistance to ozone and ultraviolet rays. Wide temperature range. In actual production, butyl reclaimed rubber can also be used with CPE and other plastics to prepare waterproof materials such as waterproof sheets and waterproof rolls.
4. Butyl reclaimed rubber to produce non-vulcanized waterproof material
Butyl reclaimed rubber can be mixed with clay, stearic acid, softener or butyl reclaimed rubber/asphalt to prepare non-vulcanized waterproof material. The production process of non-vulcanized butyl waterproofing membrane is as follows: the waste butyl rubber is plasticized and regenerated by mechanical method on the open mill, then various compounding agents are added and mixed, after parking and hot refining, the sheet is rolled out, and finally cooled , coiling, packaging. Under normal circumstances, the finished non-vulcanized butyl reclaimed rubber waterproofing membrane can be divided into three specifications according to thickness, 1.2mm, 1.5mm and 2mm.
Butyl reclaimed rubber is widely used in rubber waterproof materials. Rubber product manufacturers must choose suitable butyl reclaimed rubber according to actual needs, and mix it into the production of waterproof materials reasonably, so as to effectively reduce the raw materials on the premise of ensuring the waterproof performance and life of the product. cost, save electricity bills.
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