Concentrated natural centrifuged latex preserved without ammonia

Abstract

The invention discloses a concentrated natural centrifuged latex preserved without ammonia. According to the invention, a natural latex anti-coagulation preservative is added into the latex, the natural latex anti-coagulation preservative is an ammonia-free preservative and comprises raw materials consisting of potassium sulfate, sodium tripolyphosphate, sodium carbonate, sodium silicate pentahydrate, citric acid and sodium benzoate; butyl p-hydroxybenzoate is not used in the natural latex anti-coagulation preservative, and sodium tripolyphosphate is used instead, so the flora inhibition effect of the natural latex anti-coagulation preservative is maintained, and the problem that the latex is easy to cake after being stored for a long time due to poor water solubility of butyl p-hydroxybenzoate is solved; moreover, sodium hydrogen sulfite is replaced with potassium sulfate, good water solubility is achieved, the antibacterial range of the anti-coagulation preservative can be widened, and meanwhile, the problem that the preservative is heavy in smell due to addition of sodium hydrogen sulfite is solved; and raw material cost is reduced by reducing the use amount of sodium carbonate.The preservative has the advantages of low cost, no toxicity and no pollution, and can effectively enhance latex quality.

Description

technical field [0001] The invention belongs to the technical field of latex, in particular to a concentrated natural ammonia-free preserved centrifugal latex. Background technique [0002] Rubber is an important industrial raw material, known as the four major industrial raw materials along with steel, petroleum, and coal. Rubber has a wide range of uses due to its unique high elasticity, good physical and mechanical properties and electrical insulation properties. Therefore, the consumption of rubber is very large. Commonly used rubbers include natural rubber and synthetic rubber. At present, the world's annual demand reaches 20 million tons, including 12 million tons of synthetic rubber and 8 million tons of natural rubber. But synthetic rubber cannot replace natural rubber. my country's natural rubber production accounts for only 7% of the world's total, while its demand accounts for more than 22% of the world's total. [0003] Natural rubber is rubber extracted fro...

AI Technical Summary

Problems solved by technology

However, because ammonia has a strong pungent smell and is corrosive, it seriously affects the working and production environment, endangers the health of employees, pollutes the environment, and will increase the amount of acid used for latex coagulation and increase production costs.