Method for preparing ternary ethylene propylene vulcanized rubber powder master batches, products and application

Abstract

The invention discloses a method for preparing ternary ethylene propylene vulcanized rubber powder master batches, products and application. The preparation method comprises the following steps of: mixing 40 to 100-mesh rubber powder of waste ternary ethylene propylene rubber and a large amount of softening agent or a softening agent and a vulcanization system material at normal temperature, and standing the mixture for one day and one night under common room temperature condition to obtain the ternary ethylene propylene vulcanized rubber powder master batch 1; or adding the ternary ethylene propylene vulcanized rubber powder master batch 1 into common ternary ethylene propylene mixing glue to obtain the ternary ethylene propylene vulcanized rubber powder master batch 2; or adding the ternary ethylene propylene vulcanized rubber powder master batch 1 into common conductive or antistatic ternary ethylene propylene mixing glue to obtain the conductive or antistatic ternary ethylene propylene vulcanized rubber powder master batch 3. The ternary ethylene propylene vulcanized rubber powder master batches 1, 2 and 3 can be used as independent products. The products are applied to any rubber product of a rubber plate, a coiled material, a sealing element, a shock absorption piece and a rubber roller of any one or a combined system rubber material of ternary ethylene propylene rubber and butyl rubber, wherein the tensile strength of the rubber product is 1.8 to 18MPa.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to EPDM vulcanized rubber powder, which relates to the utilization of waste rubber powder and the technology of formulating rubber products. technical background [0002] my country is a country with poor rubber resources. Today, when we pay attention to sustainable and harmonious development, people pay more and more attention to environmental protection and the regeneration of waste rubber. As a high-performance special rubber widely used in my country, EPDM rubber is currently It mainly relies on imports, and its recycling is more valuable in the field of special rubber products. However, there are currently two main methods of recycling waste EPDM rubber products. One is the high-temperature dynamic desulfurization method. Although this method has the advantage of greater elongation, it has the disadvantages of emitting waste gas and requiring a lot of power for mechanical refining...

AI Technical Summary

Problems solved by technology

However, there are currently two main methods of recycling waste EPDM rubber products. One is the high-temperature dynamic desulfurization method. Although this method has the advantage of greater elongation, it has the disadvantages of emitting waste gas and requiring a lot of power for mechanical refining. The second is the simple addition of rubber powder, but this method has the disadvantage of poor compatibility between the rubber powder and the new rubber material. In order to solve this problem, it is usually added to the rubber material mixed with rubber powder. At the same time, add a high dose of softener, but the softener will be captured first by the new rubber material with high affinity, and it is not easy to enter the vulcanized rubber powder phase with high hardness. If the softener is to be in the new rubber phase and the rubber powder phase Reasonable matching requires more mixing and processing, which increases energy consumption

[0003] In addition, to make conductive or antistatic EPDM products, it is necessary to add a large amount of conductive auxiliary materials (such as conductive carbon black, acetylene carbon black, graphite powder). 1. Antistatic rubber is difficult. It is necessary to mix components such as conductive carbon black with high oil absorption value into the elastomer rubber. The processing process is not only time-consuming and energy-consuming, but also requires labor and black dust pollution.

[0004] At present, there is no technical solution in the industry to link the recycling of waste EPDM rubber with conductive or antistatic EPDM materials.