Automotive weatherstrips are an important part of vehicles to improve their airtightness, sound insulation and waterproof performance. The main raw materials of automotive sealing strips are synthetic rubber and plastics, and the use of reclaimed rubber can replace part of the rubber to produce automotive sealing strips, effectively reducing costs. Latex reclaimed rubber is a major category of recycled rubber products, the main purpose is to replace high-priced natural rubber to produce various types of natural rubber products; So can natural latex reclaimed rubber be used for automotive sealing strip machining?
The performance requirements of sealing strips in the doors, windows, body, sunroof, engine case and trunk of automobiles are different, and the raw materials used are different. Natural rubber has good wear resistance, high elasticity, tear strength and elongation, but poor weather resistance and oil resistance, and can be used to produce sealing strips that provide basic dustproof and waterproof functions, such as door sealing strips, and are not suitable for automotive sealing strips with strict requirements for oil, heat resistance, weather resistance and ozone resistance.
Natural latex reclaimed rubber is made of waste natural rubber and waste latex products as raw materials through selection, cleaning, crushing, desulfurization and other machine, which has the basic performance characteristics of natural rubber, and can theoretically replace natural rubber to produce automotive sealing strip products similar to car door seals and reduce production costs.
When using latex reclaimed rubber to produce automotive sealing strips, the following points need to be noted:
1. Latex reclaimed rubber is not suitable for all types of automotive weatherstrips. It is not resistant to mineral oil and is not suitable for long-term use in hot air.
2. Latex reclaimed rubber is added in different proportions of automotive weatherstrips in different use occasions. When using latex reclaimed rubber to reduce the production cost of automobile sealing strips, latex reclaimed rubber can be used alone, or combined with natural rubber or other synthetic rubber, and the mixing ratio is determined according to the specific performance requirements of the sealing strip and the performance indicators of latex reclaimed rubber.
3. Pay attention to the environmental protection of latex reclaimed rubber. The quality of automotive rubber sealing strips is closely related to human health, and has strict requirements for environmental protection. Therefore, when choosing latex reclaimed rubber for automotive sealing strips, we must choose environmentally friendly latex reclaimed rubber 2SLYY1115, which is non-polluting, non-permeable, non-toxic and tasteless. In addition, when light-colored car sealing strips are mixed with latex reclaimed rubber, it is recommended to choose white latex reclaimed rubber, which is easy to match; Choose black natural reclaimed rubber for dark and black automotive sealing strips to reduce lower costs.
When producing automotive sealing strips, it is also necessary to adjust the formula of rubber products, consider various performance requirements such as elasticity and compression set, adjust the dosage of vulcanizing agent and accelerator in the vulcanization system, and the dosage of reinforcing carbon black and white carbon black in the reinforcing system. Adjust the production machine parameters, especially the mixing machine and vulcanization machine, to further improve the comprehensive performance of automobile sealing strips mixed with latex reclaimed rubber and improve economic benefits.
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