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High-elasticity low-heat-generation environment-friendly reclaimed rubber material and preparation method thereof

A technology with low heat generation and high elasticity, applied in the field of rubber materials, can solve the problems of limited promotion and expansion of application, poor rubber resilience, poor stability, etc. The effect of elasticity improvement

Active Publication Date: 2020-12-29
SICHUAN YUANXING RUBBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reclaimed rubber produced after adding the above softeners has large fluctuations in various indicators and poor stability. The rubber used in specific formulas has poor resilience, large heat generation, and large fluctuations in environmental protection tests, which limits subsequent promotion and expanded applications.

Method used

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  • High-elasticity low-heat-generation environment-friendly reclaimed rubber material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Raw materials (by weight): tire crown rubber powder: 100 parts; liquid isoprene rubber LIR30: 5 parts; environmental naphthenic oil: 10 parts; activator 520: 0.5 parts; rosin: 0.45 parts; water: 0.12 parts share.

[0023] Stir the tire crown rubber powder, liquid isoprene rubber LIR30, activator 520, rosin, and environmentally friendly naphthenic oil evenly, then put them into an electrically heated desulfurization tank, then add water, and feed 1.35Mpa high-pressure steam until the temperature reaches Keep at 225°C for 2.5 hours to obtain desulfurized rubber powder; cool the desulfurized rubber powder to below 45°C through a cooling conveyor; then refine the desulfurized rubber powder through a refiner and then release it into pieces to obtain environmentally friendly reclaimed rubber with high elasticity and low heat generation Gum.

Embodiment 2

[0025] Raw materials (by weight): tire crown rubber powder: 100 parts; liquid isoprene rubber LIR30: 15 parts; environmental naphthenic oil: 10 parts; activator 520: 0.5 parts; rosin: 0.45 parts; water: 0.12 parts share.

[0026] Stir the tire crown rubber powder, liquid isoprene rubber LIR30, activator 520, rosin, and environmentally friendly naphthenic oil evenly, then put them into an electrically heated desulfurization tank, then add water, and feed 1.35Mpa high-pressure steam until the temperature reaches Keep at 225°C for 2.5 hours to obtain desulfurized rubber powder; cool the desulfurized rubber powder to below 45°C through a cooling conveyor; then refine the desulfurized rubber powder through a refiner and then release it into pieces to obtain environmentally friendly reclaimed rubber with high elasticity and low heat generation Gum.

Embodiment 3

[0028] Raw materials (by weight): tire crown rubber powder: 100 parts; liquid isoprene rubber LIR30: 13 parts; environmental naphthenic oil: 10 parts; activator 520: 0.5 parts; rosin: 0.45 parts; water: 0.12 parts share.

[0029] Stir the tire crown rubber powder, liquid isoprene rubber LIR30, activator 520, rosin, and environmentally friendly naphthenic oil evenly, then put them into an electrically heated desulfurization tank, then add water, and feed 1.35Mpa high-pressure steam until the temperature reaches Keep at 225°C for 2.5 hours to obtain desulfurized rubber powder; cool the desulfurized rubber powder to below 45°C through a cooling conveyor; then refine the desulfurized rubber powder through a refiner and then release it into pieces to obtain environmentally friendly reclaimed rubber with high elasticity and low heat generation Gum.

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Abstract

The invention discloses a high-elasticity low-heat-generation environment-friendly reclaimed rubber material and a preparation method thereof. Reclaimed rubber is prepared from 100 parts of waste rubber powder, 5-15 parts of a softener, 0.20-0.50 part of an activator, 0.10-0.15 part of water, 0.30-0.50 part of rosin or resin and 9-11 parts of environment-friendly naphthenic oil through a high-temperature dynamic desulfurization method. The high-temperature dynamic desulfurization condition is high-pressure steam of 1.30-1.40 Mpa, and the temperature reaches 220-230 DEG C and is kept for 2.0-3.0 hours. The reclaimed rubber is prepared by adopting a high-temperature dynamic desulfurization method, more liquid isoprene rubber LIR30 is used as a softener, a proper amount of environment-friendly naphthenic oil is matched with a small amount of activating agent, rosin and water, other components are not needed for modification, the performance of the reclaimed rubber is improved, the reboundresilience of the reclaimed rubber is remarkably improved, and the compression heat generation of the reclaimed rubber is remarkably reduced.

Description

technical field [0001] The invention relates to rubber materials, more specifically, the invention relates to an environment-friendly regenerated rubber compound with high elasticity and low heat generation without softening oil and a preparation method thereof. Background technique [0002] my country's waste rubber utilization is mainly divided into three major blocks: tire retreading, rubber powder production, and reclaimed rubber production. Among them, the fastest growing industry is the reclaimed rubber industry, whose use of waste rubber has reached 80% of the total utilization. The production process of reclaimed rubber mainly includes oil method (direct steam static method), water oil method (cooking method), high temperature dynamic desulfurization method, extrusion method, chemical treatment method, microwave method, etc. The manufacturing methods of reclaimed rubber mainly used in my country in the early stage include oil method and water oil method, which have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L19/00C08L9/00C08L91/00C08L93/04C08J11/10
CPCC08L19/003C08J11/10C08L2207/24C08L2205/035C08J2319/00C08L9/00C08L91/00C08L93/04Y02W30/62
Inventor 郑昌福古景根
Owner SICHUAN YUANXING RUBBER
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