Latex Rubber Encyclopedia

Softeners affect the performance of latex reclaimed rubber

Create Date:2013-02-14 11:05:57Click volume:1270
Softeners affect the performance of latex reclaimed rubber

Whether it is the use of waste natural rubber, waste latex products to produce latex reclaimed rubber, or the use of latex reclaimed rubber to produce rubber products, it is inseparable from the softeners. The softeners can improve the rubber processing performance and reduce the production and processing of latex reclaimed rubber. Power consumption, promote the uniform dispersion of a variety of powdery additives to prevent the occurrence of scorch. Different kinds of latex reclaimed rubber, the production of rubber products varied, so the type and amount of softener used are different, without the variety of softeners on the performance of latex reclaimed rubber and its products are not the same.

From the point of view of action, adding proper amount of softening agent during the production and processing of latex reclaimed rubber can make the vulcanized rubber network fluffy, improve the distribution of the regenerating activator in the glue, accelerate the oxidative training process, and at the same time can inhibit the gelation. Among them, petroleum-based heavy oil and pine tar oil have higher softening efficiency, and the produced latex reclaimed rubber and latex reclaimed rubber products have good comprehensive performance.

From the point of view of the amount of softener, studies have shown that: with the increase in the amount of softener, reclaimed rubber ML decreased, plasticity increased, its vulcanizate performance peak in the 5 ~ 15phr softener. The amount of softener is small, the reclaimed rubber ML is too high, the processing performance is not good, and the amount of softener is too much. Although the plasticity is improved, the tensile strength and the elongation at break decrease after vulcanization. Therefore, the amount of softener should be moderate. Adding softeners to other types of reclaimed rubber has roughly the same effect on the properties of the regenerated latex.

The common softeners on the market are petroleum-based heavy oils mentioned above, pine tar oil plants, coal tar coal tars, and coumarone resins, among which the pollution of latex reclaimed rubber and products produced using coal tars With pungent odors, it cannot be used in the production of light-colored rubber products and environmentally-friendly rubber products (currently the country has banned the use of coal tar in reclaimed rubber); pine tar and rosin are used as plant-based softeners and can be used for The production of a variety of odorless latex reclaimed rubber products, and significantly improved the processing performance and aging resistance of the rubber compound.

The rubber latex reclaimed rubber produced by Hebei Hongyun Reclaimed Rubber Factory adopts high-quality waste natural rubber and waste latex rubber products as raw materials. With the use of environment-friendly softeners, the latex reclaimed rubber products produced have good elasticity, high fineness, and breaking elongation. Growing up, environmental protection and tasteless, used to replace natural rubber production of rubber products can guarantee the same quality.