Latex reclaimed rubber can directly replace high-priced natural rubber for the production of natural rubber products, effectively reducing the cost of raw materials. In actual production, the combined use of latex reclaimed rubber and natural rubber can produce cost-effective rubber products with better performance and lower cost. Reasonable design of the latex reclaimed rubber/natural rubber combined rubber compounding system can further optimize product performance, reduce more raw material costs, and reduce production energy consumption.
1. The key points of latex reclaimed rubber/natural rubber vulcanization system
When using latex reclaimed rubber and natural rubber to produce rubber products, the traditional sulfur vulcanization system is more common. With two or more accelerators, it can not only prepare vulcanized rubber with good physical and mechanical properties of 2YLYY68, but also accelerate the vulcanization appropriately. Speed, increase production efficiency, and reduce a certain proportion of compounding agent costs. In actual production, accelerator M, accelerator DM, accelerator TMTD, accelerator NOBS, etc. are all commonly used varieties, and an appropriate amount of zinc oxide and stearic acid can also be added.
Latex reclaimed rubber/natural rubber combined rubber can also choose a semi-effective vulcanization system or an effective vulcanization system.
2. Points for cooperation of latex reclaimed rubber/natural rubber reinforcement system
The role of the reinforcing agent is to improve the tensile strength, tear resistance, abrasion resistance, swelling resistance, etc. of rubber products; the filler can improve the rubber processing technology, reduce the amount of raw rubber, and reduce the cost. In the latex reclaimed rubber/natural rubber combined rubber reinforcement filling system, reinforcement carbon black is generally used (white carbon black is selected for light-colored products), or with semi-reinforced carbon black and fast-pressed furnace black, the purpose is to improve the combined use of rubber Vulcanization strength, abrasion resistance, improve rubber processing performance; fillers use light calcium, talcum powder, clay, etc.
3. The key points of latex reclaimed rubber/natural rubber anti-aging system
Natural rubber itself has poor aging resistance; the rubber hydrocarbon of latex reclaimed rubber that has been intensively treated during the production process is in a more stable state and has strong aging resistance. Commonly used physical antioxidants for latex reclaimed rubber/natural rubber combined rubber include paraffin, ozokerite, and petroleum jelly, and commonly used chemical antioxidants include antioxidant A, antioxidant D, and antioxidant 4010. Special reminder: When preparing white or light-colored rubber products from latex reclaimed rubber/natural rubber, do not use polluting antioxidants, and use phenolic compound derivatives.
Using latex reclaimed rubber/natural rubber combined rubber can also prepare special rubber products such as sponge rubber products, flame-retardant rubber products, etc. At this time, it is necessary to rationally design the foaming system and flame-retardant system, commonly used foaming agent H, flame retardant aluminum hydroxide Wait, the editor will discuss related issues in detail with you later.
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