Particle-reinforced reprocessable rubber material and preparation method thereof

A technology of repeated processing and particle reinforcement, applied in the field of rubber recycling, can solve the problems of low mechanical properties of polymer materials, complex synthesis process, difficult to widely use, etc., to achieve repeatable processing and recycling, simple process and low cost. Effect

Active Publication Date: 2021-02-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned polymer materials need to be prepared through cumbersome monomer polymerization, and some monomers can only be obtained through complex design and synthesis. The synthesis process is complex and time-consuming, and the prepared polymer materials have low mechanical properties, so it is difficult to achieve wide application

Method used

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  • Particle-reinforced reprocessable rubber material and preparation method thereof
  • Particle-reinforced reprocessable rubber material and preparation method thereof
  • Particle-reinforced reprocessable rubber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0026] (1) adding epoxidized natural rubber, white carbon black, and aluminum chloride to an internal mixer and kneading for 10 minutes in sequence, and the kneading temperature is 80° C. to obtain a kneaded rubber;

[0027] (2) Vulcanize the obtained mixed rubber at 180° C. according to the positive vulcanization time;

[0028] (3) Crushing the vulcanized rubber into 80-mesh rubber powder, and hot pressing at 180°C for 20 minutes to obtain reprocessed rubber.

[0029] By changing the amount of white carbon black and aluminum chloride added, comparative samples and 5 examples were prepared according to the above-mentioned method of the present invention. The specific formulations of the comparison sample and the embodiment are shown in the following table 1, and the unit of each material consumption in the table is g.

[0030] Table 1

[0031]

[0032] According to the Chinese national standard GB / T 528-2009, the properties of all formulations in Example 1 were comprehens...

Embodiment example 2

[0037] (1) Epoxidized styrene-butadiene rubber, montmorillonite, and zinc chloride were successively added to an internal mixer and mixed for 10 minutes at a mixing temperature of 50° C. to obtain a mixed rubber;

[0038] (2) vulcanize the obtained mixed rubber at 150° C. according to the positive vulcanization time;

[0039] (3) Crushing the vulcanized rubber into 80-mesh rubber powder, and hot pressing at 150°C for 60 minutes to obtain reprocessed rubber.

[0040] By changing the amount of montmorillonite and aluminum chloride added, comparative samples and 4 examples were prepared according to the above-mentioned method of the present invention. Contrast sample and embodiment specific formula are shown in the following table 3, and the consumption unit of each material in the table is g.

[0041] table 3

[0042]

[0043]The properties were tested according to the Chinese national standard GB / T 528-2009. The typical properties of vulcanized rubber samples and the chang...

Embodiment example 3

[0047] (1) Epoxidized butadiene rubber, kaolin, and ferric chloride were successively added to an internal mixer and mixed for 10 minutes at a mixing temperature of 30° C. to obtain a mixed rubber;

[0048] (2) vulcanize the obtained mixed rubber at 160°C according to the positive vulcanization time;

[0049] (3) Crushing the vulcanized rubber into 80-mesh rubber powder, and hot pressing at 160°C for 30 minutes to obtain reprocessed rubber.

[0050] Changing the added amount of kaolin and aluminum chloride prepared comparative samples and 4 examples according to the above-mentioned method of the present invention. The specific formulations of the comparison sample and the embodiment are shown in the following table 5, and the unit of each material consumption in the table is g.

[0051] table 5

[0052]

[0053] The properties were tested according to the Chinese national standard GB / T 528-2009. The typical properties of vulcanized rubber samples and the changes in proper...

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Abstract

The invention discloses a particle-enhanced rubber material with reprocessed ability and a preparation method thereof. The particle-enhanced rubber material is characterized in that metal chloride isadded into epoxy rubber filled with silicate particles and is used as a catalyst; the epoxy group of a rubber matrix generates addition reaction with the silanol group at the surface of the silicate filler to produce an interface silyl ether bond, so as to realize the crosslinking and enhancing of the rubber material; the alkoxy exchange reaction between silyl ether crosslinking bonds at high temperature is utilized to realize the rearrangement of a crosslinking network topology structure of the rubber material, so that the crosslinked rubber material can be reprocessed. The particle-enhancedrubber material with reprocessed ability has the advantages that the crosslinking and reprocessing of the silicate particle-filled epoxy rubber material are realized on the basis of the silyl ether exchange reaction; the physical and mechanical properties are high, the reprocessing effect is realized, and the retention rate of the reproducing property is high; the technology and equipment are simple, the types of raw materials are diversified, and the price is low; the particle-enhanced rubber material with reprocessed ability is suitable for industrial common silicate particle-filled epoxy rubber material, and the important application prospect is realized in the recycling of the rubber material.

Description

technical field [0001] The invention relates to the field of rubber recycling, in particular to a particle-reinforced reprocessable rubber material and a preparation method thereof. The method utilizes a silicon ether exchange reaction to prepare a reworkable silicate particle cross-linked epoxy rubber material. Background technique [0002] Rubber has unique high elasticity and plays an irreplaceable role in many fields such as national economy and national defense. However, rubber raw rubber needs to be compounded with nanoparticles to obtain reinforcement, and the interface between rubber and nanoparticles is the key factor that determines the dispersion of nanoparticles and the properties of rubber materials. Utilizing the reactive groups between rubber molecular chains and fillers to construct rubber-nanoparticle interfacial bonding is an effective way to enhance interfacial interaction. At the same time, rubber material is a typical thermosetting material, and its co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L15/00C08K3/36C08K3/16C08K3/34
CPCC08K3/16C08K3/346C08K3/36C08K2003/164C08K2003/168C08L15/00
Inventor 吴思武郭宝春唐征海
Owner SOUTH CHINA UNIV OF TECH
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