Rubber waterproofing membrane can effectively prevent rainwater, snow water, etc. from infiltrating indoors or underground buildings, and mainly uses EPDM, neoprene or butyl rubber as the main raw material. Comprehensive finished product performance and production cost, EPDM waterproofing membrane is more common. In actual production, EPDM waterproofing membrane manufacturers can also use a certain proportion of EPDM reclaimed rubber in the formula to effectively reduce the cost of raw materials and production energy consumption while ensuring product quality.
1. The significance of using EPDM reclaimed rubber for EPDM waterproofing membrane
The use of reclaimed rubber in the EPDM waterproofing membrane can significantly reduce the cost of raw materials. EPDM reclaimed rubber has the basic performance characteristics of EPDM original rubber, high and low temperature resistance, ozone resistance, weather resistance, and water resistance. It can replace the original rubber to prepare the waterproof membrane 2YLYY311 to ensure the good performance of the finished product. Compared with EPDM virgin rubber, EPDM reclaimed rubber has faster vulcanization speed and higher scorch safety. Waterproof membranes mixed with EPDM reclaimed rubber have higher vulcanization efficiency and are not easy to scorch.
In the production process, the EPDM waterproof membrane mixed with reclaimed rubber is easier to mix, has low power consumption, and has better dimensional stability of the finished product.
2. EPDM waterproof membrane uses EPDM reclaimed rubber formula design
When using reclaimed rubber for EPDM waterproofing membrane to reduce the cost of raw materials, it is necessary to choose a reclaimed rubber that has a smooth surface, no small particles, no impurities, and physical properties close to the waterproofing membrane. It is easy to wrap the roller during use and has good process performance. Reasonably control the amount of EPDM reclaimed rubber, which can be controlled at 50-100 parts when used together with virgin rubber, or produce waterproof membranes separately. Adjust the formula, usually adding sulfur and other vulcanization system compounding agents in the waterproofing membrane formula of EPDM reclaimed rubber can be increased by about 10-15%.
3. EPDM waterproofing membrane uses EPDM reclaimed rubber mixing process
When EPDM reclaimed rubber and EPDM raw rubber are used together to produce waterproof membranes, the manufacturer can blend the reclaimed rubber with the raw rubber uniformly and then add other compounding agents in turn, or mix the EPDM raw rubber with the vulcanizing agent. The EPDM reclaimed rubber is evenly mixed. When using EPDM reclaimed rubber alone to produce waterproofing membranes, part of the EPDM reclaimed rubber can be masticated in advance, and then the masticated EPDM reclaimed rubber can be mixed with the remaining reclaimed rubber evenly, and added in the usual order of addition. Mix the agent evenly.
When using EPDM reclaimed rubber to prepare waterproof membranes and reduce costs, it is necessary to reasonably determine the proportion of reclaimed rubber added according to actual needs, and appropriately adjust the types and amounts of compounding agents in the vulcanization system, reinforcement system, anti-aging system, and softening system in the formula. , Properly adjust the production process, and effectively reduce the cost of raw materials under the premise of ensuring product quality.
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