Environment-friendly reclaiming agent for rubber reclaiming and preparation method thereof

A regenerant and environmental-friendly technology, which is applied in the field of environmentally-friendly regenerant and its preparation, can solve the problems of non-environmental protection and poor regenerant effect, and achieve the effects of reducing production costs, basically no rebound in Mooney viscosity, and lowering the desulfurization temperature

Active Publication Date: 2019-05-24
NANJING L J R RUBBE & PLASTIC CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem that the existing regenerant has poor effect and is not environmentally friendly, the present invention clarifies the relationship between the working principle of the activator and the Mooney viscosity rebound of the reclaimed rubber on the basis of analyzing the actual effect of the regenerant, and provides a An environmentally friendly regenerant for rubber regeneration and a preparation method thereof. The regenerant includes a uniformly mixed regeneration activator, catalyst and softener. The activator has a general structural formula: Pure substances or mixtures of R 1 is a hydrocarbon compound, R 2 It is C1-C6 hydroxyl or carboxyl group, the catalyst is a metal salt, and the mass ratio of activator, catalyst and softener is 0.5-5:0.05-0.3:100

Method used

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  • Environment-friendly reclaiming agent for rubber reclaiming and preparation method thereof
  • Environment-friendly reclaiming agent for rubber reclaiming and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Put 100 parts by mass of environmentally friendly aromatic oil in a heating and stirring container, heat it to 130°C, and stir for 5 minutes; add 0.6 parts by mass of Stir at 110°C for 10 minutes; then add 0.07 parts by mass of copper chloride, stir at 120°C for 9 minutes; stop heating, and cool the material to room temperature within 10 minutes to obtain a solid rubber environmental protection regenerant.

Embodiment 2

[0025] Put 100 parts by mass of pine tar in a heating and stirring container, heat it to 80°C while stirring, and stir for 4 minutes; add 1 part by mass of Stir at 100°C for 7 minutes; then add 0.1 parts by mass of barium stearate, stir at 90°C for 10 minutes; stop heating, and cool the material to room temperature within 60 minutes to obtain a solid rubber environmental protection regenerant.

Embodiment 3

[0027] Put 100 parts by mass of naphthenic oil in a heating and stirring container, heat it to 90°C while stirring, and stir for 3 minutes; add 5 parts by mass of Stir at 100°C for 11 minutes; then add 0.3 parts by mass of magnesium hydroxide, stir at 90°C for 10 minutes; stop heating, and cool the material to room temperature within 30 minutes to obtain a liquid rubber environmental protection regenerant.

[0028] In order to compare with the currently commonly used formula 4, the same rubber powder was used to prepare reclaimed rubber according to formula 1#, 2#, 3# and 4# under the same process conditions.

[0029] Desulfurization formula

[0030]

[0031] Comparison of Mechanical Properties and Mooney Viscosity Rebound

[0032]

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PUM

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Abstract

The invention provides an environment-friendly reclaiming agent for rubber reclaiming and a preparation method thereof. The reclaiming agent is prepared from an activating agent, a catalyst and a softening agent through uniform mixing in a mass ratio of (0.5-5):(0.05-0.3):100. The preparation method comprises the steps that the softening agent is heated to 70-130 DEG C while stirred, and stirringis conducted for 3-5 minutes; the activating agent is added, and stirring is conducted for 5-10 minutes at the temperature of 80-120 DEG C; the catalyst is added, and stirring is conducted for 8-15 minutes at the temperature of 90-130 DEG C; after the materials are quickly cooled to the room temperature, the environment-friendly rubber reclaiming agent is obtained. By adjusting a formula, the reclaiming agents with different viscosities can be obtained, and an existing device can be used without being improved. The activating agent (the formula is shown in the description.) achieves efficientand environment-friendly desulfurization under the action of the catalyst, less energy is consumed in the desulfurated rubber powder refining process, the reclaimed rubber production cost is greatly reduced, the reclaimed rubber product prepared by using the method is excellent in performance and stable in Mooney viscosity.

Description

Technical field: [0001] The invention relates to an environment-friendly regeneration agent for rubber regeneration and a preparation method thereof. The utility model belongs to the field of waste rubber recycling. Background technique: [0002] my country is the largest rubber consumer in the world. In 2014, the output of waste tires was 11.35 million tons (315 million pieces), and it grew at an average annual rate of 5% to 6%. If these waste tires are not disposed of in time, the environment will be seriously polluted. At present, the preparation and application of reclaimed rubber has become the main direction of recycling waste rubber in my country. In 2016, the output of reclaimed rubber in my country reached 4.6 million tons. [0003] The regeneration of waste rubber refers to cutting off the cross-linking points mainly composed of S-S and C-S, so that its network structure returns to a quasi-linear molecular structure with plasticity. Selectively breaking the S-S ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J11/28C08J11/16C08J11/26C08J11/20C08J11/18C08L19/00
CPCY02W30/62
Inventor 戈风行史金炜陆涛陈成杰张植俞刘晓博任冬云王杰
Owner NANJING L J R RUBBE & PLASTIC CO LTD
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