Method for selecting optimal microwave radiation power of environmental-friendly high-tenacity regenerated rubber

Abstract

The invention discloses a method for selecting the optimal microwave radiation power of environmental-friendly high-tenacity regenerated rubber, belonging to the field of waste rubber regeneration. The method comprises the following steps of: flatly laying rubber to be processed 2 cm in thickness; then, carrying out microwave regeneration processing on the rubber; under the condition that the microwave radiation frequency is 2450 Hz, respectively setting the power into seven power points: 320 W, 400 W, 480 W, 560 W, 640 W, 720 W and 800 W power points, respectively setting the radiation time into seven time points: 60 s, 70 s, 80 s, 90 s, 100 s, 110 s, 120 s time points, and carrying out microwave radiation processing on the rubber for seven times under each power point; and respectively carrying out low-temperature regeneration on 49 rubbers subjected to microwave radiation for 20 min on a low-temperature roll mill under each power point and each time point. Through carrying out testing on the physical mechanical properties and manufacturing process properties of the rubber prepared according to a national standard formula, the radiation power corresponding to the rubber with the optimal comprehensive property is determined as the optimal microwave radiation power. The method has the beneficial effects of saving the radiation energy and improving the properties of the regenerated rubber.

Description

technical field [0001] The invention relates to the field of waste rubber regeneration, in particular to a method for selecting the optimum microwave radiation power for environmentally friendly high-strength reclaimed rubber. Background technique [0002] The number of waste rubber materials is second only to waste plastics in waste polymer materials. Among them, the annual scrap of automobile tires is more than 1 billion in the world, and 50 to 60 million in my country. The recycling and utilization of waste rubber is mainly waste tires, and others include waste rubber shoes and inner tubes. [0003] Conventional reclaimed rubber currently needs to be carried out in a regeneration tank during the regeneration process, requiring heating and stirring, cleaning, dehydration, refining and other processes. The equipment and processes are complex and the investment is large. In the regeneration process, a large amount of softener coal tar, pine tar, petroleum extract, etc. are ...

AI Technical Summary

Problems solved by technology

Excessive power of microwave radiation may not only lead to the breakage of cross-linking bonds, but also lead to excessive breakage of the main chain of rubber molecules, which will eventually lead to a decrease in the mechanical strength of the reclaimed rubber, and it is easy to stick to the roller, which also wastes energy.

The power of microwave radiation is too low, which will also reduce the mechanical strength of reclaimed rubber.