A kind of preparation method of latex product not easy to bloom and stick

Abstract

The invention provides a preparation method of a latex product uneasy to bloom and adhere. The preparation method comprises the following steps: preparing a natural latex primary product, carrying outhypochlorite treatment, carrying out acetic acid treatment, carrying out alkali washing, carrying out water washing and drying. According to the preparation method provided by the invention, an anti-blooming agent is not used and the concentrations of used hypochlorite and acetic acid solution are relatively low; a processing technology is simple and the blooming and adhering problems can be completely solved; the hypochlorite and the acetic acid solution are environment-friendly reagents and are easily industrially produced, so that the problems in a latex industry that various compound agents are matched to generate a blooming phenomenon and the product is easy to adhere are radically solved and the preparation method has important practical significance.

Description

technical field [0001] The invention relates to a preparation method of latex products which are not easy to bloom and stick, which is applied to solve the problems of bloom and easy sticking in latex products, and belongs to the field of latex product preparation. Background technique [0002] Latex refers to a colloidal dispersion system with certain stability formed by polymer particles dispersed in an aqueous medium. From the appearance and shape, latex is a milky white liquid, and the size of the polymer particles is at the nanometer level. Latex products can generally be obtained by simple dipping and molding methods. The products have the characteristics of high elasticity, high strength, good wearability, good orthopedic functions, and good biological properties. It is widely used in various aspects such as national defense and military industry, such as labor protection gloves, disposable sanitary gloves, rubber soles, condoms, weather balloons and other products. ...

AI Technical Summary

Problems solved by technology

However, many latex products have serious problems of blooming and adhesion, which not only seriously affects the appearance quality of the product, but also affects the performance and life of the latex product to a certain extent. Therefore, blooming and adhesion problems have become the current latex An important limiting factor for the industry, causing huge economic losses

[0003] There are two main reasons for the blooming of latex products: First, due to the poor compatibility between various compounding agents such as vulcanizing agents, accelerators, anti-aging agents and latex particles, when their dosage exceeds the solubility in latex , it is easy to produce ejection phenomenon, and it is difficult to meet the performance requirements of the expected product by reducing the amount of compounding agent; secondly, during the use of the product, due to the presence of double bonds in some latex molecules, it is relatively active and easy to oxidize in the air As a result, the molecular chain is broken, the cross-linking density is reduced, and various compounding agents are easier to spray out, thus affecting the quality and appearance of the product

[0004] There are three existing technologies to solve the problem of blooming. One is the combined use of compounding agents, that is, two or more additives such as accelerators or anti-aging agents are used, and the dosage of various compounding agents is controlled within the solubility range of rubber. Within, to prevent spraying without reducing the performance of the product, such as the invention patent application number CN104448578A provides a method to solve the problem of blooming in rubber production, using two anti-aging agents and two accelerators And use it to solve the problem of blooming in ethylene-propylene rubber, but this method can only delay but not solve the blooming of latex products, and this method can not solve the problem of product adhesion; the second is to add various anti-blooming agents, Its main component is emulsified paraffin. The mechanism of action is that it can migrate to the surface of the product to form a protective film, thereby inhibiting the ejection of various compounding agents and preventing the aging of the product. Soluble in water, so when the product is in use, the anti-frost protective film will be removed, and the problem of blooming will also occur; the third is that chlorination treatment can play a role in preventing blooming of natural rubber latex in existing books. effect, the chlorination treatment method introduced here mainly uses liquid chlorine or a mixed solution of hypochlorite and hydrochloric acid, but in the chlorination treatment method provided above, liquid chlorine is a high-risk liquid that is prone to explosion; hypochlorous acid The mixed solution of salt and hydrochloric acid will instantly generate a large amount of chlorine gas, which will cause a lot of waste, and hydrochloric acid is a strong acid, which is extremely dangerous, which leads to the fact that this method is limited to the experimental link and is not enough to be applied to the existing practice. in production

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