Natural latex reclaimed rubber is processed from waste natural rubber, waste latex and its products. It retains the basic performance characteristics of natural rubber and can replace natural rubber to produce rubber products, such as rubber tires, rubber soles, rubber plates, conveyor belts, rubber strips, etc., effectively reducing the cost of raw materials. When using recycled latex rubber instead of natural rubber to produce products, the following issues should be paid attention to.
1. selection skills of latex reclaimed rubber
When selecting the latex reclaimed rubber to replace natural rubber, it is necessary to select the appropriate latex reclaimed rubber according to the performance requirements of rubber products, including color, tensile strength, elongation at break, elasticity, environmental protection requirements, etc. Generally, the reclaimed latex with high rubber content has better elasticity and strength; The price of black latex reclaimed rubber with the same index (tensile strength, elongation at break, etc.) is lower than that of white latex reclaimed rubber. Black natural reclaimed rubber is recommended for black or dark rubber products; For rubber products with environmental protection requirements, latex reclaimed rubber that can provide environmental protection test report shall be selected.
2. replacement ratio of emulsion reclaimed rubber
The proportion of natural rubber replaced by latex reclaimed rubber with different rubber content is different. It is necessary to determine the replacement proportion according to the effective rubber hydrocarbon content of reclaimed rubber. The effective rubber content conversion algorithm can be used to match the usage of reclaimed rubber with its effective rubber content. For example, white pure latex reclaimed rubber with 100% rubber content can replace natural rubber in the ratio of 1:1, while latex reclaimed rubber with 80% rubber content usually replaces natural rubber in the ratio of 1.5:1.
3. mixing and plasticizing sequence of natural rubber/Latex reclaimed rubber
The recycled latex rubber has been repeatedly kneaded in the production process and has good plasticity; Natural rubber needs to be fully molded before use. When natural rubber and latex reclaimed rubber are used together to produce rubber products, it is recommended to add latex reclaimed rubber for mixing after the completion of natural rubber molding, or to add latex reclaimed rubber after adding filler in natural rubber molding.
4. rubber formula adjustment
When latex reclaimed rubber is used to replace natural rubber to produce rubber products, the natural rubber in the formula cannot be directly replaced by latex reclaimed rubber without changing the dosage of other chemical additives. Generally, the sulfur content, moisture content, softener content, etc. are calculated according to the effective rubber hydrocarbon content in latex reclaimed rubber and the rubber hydrocarbon e5lyy428 content in the whole formula. Compared with raw rubber, sulfur and accelerator used in reclaimed rubber can be increased by about 20%. Even if the sulfur content in reclaimed rubber is slightly higher, the frost spray phenomenon like natural rubber will not occur.
When using latex reclaimed rubber to replace natural rubber in the production of various rubber products, it is necessary to consider the use of the product, quality requirements, the purpose of matching the reclaimed rubber, and the market price of the product. First, determine the rubber percentage, and then determine what material to use, and what proportion of the reclaimed rubber to natural rubber and synthetic rubber. Later, we will continue to share with you the specific application of latex reclaimed rubber in natural rubber products.
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