Environmental-friendly regenerated rubber and preparation method thereof

Abstract

The invention discloses environmental-friendly regenerated rubber and a preparation method thereof, and belongs to the technical field of rubber preparation. M-benzaldehyde and malonic acid are used for forming bridging ligands; then, coordination assembly is performed with metal cobalt; the formed molecular framework has rigidity; through the addition of extending conjugated allyl, the distance between carboxyl and benzene ring keys becomes long; the form maintaining and the mechanical property improvement of regenerated rubber are enhanced. The waste swill and pig manure are used as raw materials; alpha-amylase and alkaline protease are subjected to enzymolysis and are then subjected to beta-amylase mixed enzymolysis are performed; the rubber stretching elongation improvement is facilitated; the rubber elasticity is improved. In the regenerated rubber preparation process, column support additives are firstly used for opening pores inside the waste rubber powder; the crosslinking bondfracture is promoted; the inside combination performance is enhanced; the performance of the regenerated rubber is improved. The invention solves the problems of great pollution in the existing regenerated rubber regeneration process, low regeneration efficiency and low stretch intensity of the prepared regenerated rubber.

Description

technical field

[0001] The invention belongs to the technical field of rubber preparation, and in particular relates to an environment-friendly regenerated rubber and a preparation method thereof. Background technique

[0002] The amount of waste rubber materials is second only to waste plastics in waste and old polymer materials. The recycling of waste rubber is mainly waste tires, and others include waste rubber shoes and inner tubes, etc. The utilization of waste rubber is conducive to protecting the environment, realizing the reuse of resources, and is conducive to the sustainable development of social economy. Usually, the vulcanized scraps or products in rubber products are used as raw materials, which have a certain degree of plasticity, and the rubber that can be reused after desulfurization is called reclaimed rubber. According to the different waste rubber used, reclaimed rubber is divided into outer tires, inner tubes and rubber shoes. Reclaimed rubber has alway...

Examples

preparation example Construction

[0024] The preparation method of pillaring additive is:

[0025] (1) Take pyridine and add piperidine according to the mass ratio of 10~15:1~4 and mix to obtain a mixture. Take isophthalaldehyde and add malonic acid according to the mass ratio of 0.2~0.3:100~200, and then add the mass of malonic acid 3 ~9 times the mixture, stir and mix at 75~80°C for 18~24h, cool to room temperature, adjust the pH to 1~1.5, filter, take the filter residue, wash it with deionized water, and vacuum dry to obtain a vacuum-dried product. Take a vacuum-dried product Add distilled water according to the mass ratio of 1~3:100~150, stir and mix at 50~60°C for 20~30min, add sodium hydroxide with 20~30% vacuum-dried substance, stir and mix at 50~60°C for 1~3h, pump Filter, take the suction filter residue and dry to obtain dry matter;

[0026] (2) Take the dry matter and mix it with water at a mass ratio of 1~3:10~30 to obtain a mixed solution a, take absolute ethanol at a mass ratio of 1~3:1~4 and add...

technical field

[0001] The invention belongs to the technical field of rubber preparation, and in particular relates to an environment-friendly regenerated rubber and a preparation method thereof. Background technique

[0002] The amount of waste rubber materials is second only to waste plastics in waste and old polymer materials. The recycling of waste rubber is mainly waste tires, and others include waste rubber shoes and inner tubes, etc. The utilization of waste rubber is conducive to protecting the environment, realizing the reuse of resources, and is conducive to the sustainable development of social economy. Usually, the vulcanized scraps or products in rubber products are used as raw materials, which have a certain degree of plasticity, and the rubber that can be reused after desulfurization is called reclaimed rubber. According to the different waste rubber used, reclaimed rubber is divided into outer tires, inner tubes and rubber shoes. Reclaimed rubber has alway...

Examples

preparation example Construction

[0024] The preparation method of pillaring additive is:

[0025] (1) Take pyridine and add piperidine according to the mass ratio of 10~15:1~4 and mix to obtain a mixture. Take isophthalaldehyde and add malonic acid according to the mass ratio of 0.2~0.3:100~200, and then add the mass of malonic acid 3 ~9 times the mixture, stir and mix at 75~80°C for 18~24h, cool to room temperature, adjust the pH to 1~1.5, filter, take the filter residue, wash it with deionized water, and vacuum dry to obtain a vacuum-dried product. Take a vacuum-dried product Add distilled water according to the mass ratio of 1~3:100~150, stir and mix at 50~60°C for 20~30min, add sodium hydroxide with 20~30% vacuum-dried substance, stir and mix at 50~60°C for 1~3h, pump Filter, take the suction filter residue and dry to obtain dry matter;

[0026] (2) Take the dry matter and mix it with water at a mass ratio of 1~3:10~30 to obtain a mixed solution a, take absolute ethanol at a mass ratio of 1~3:1~4 and add...