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Environment-friendly recycled material

An environmentally friendly and raw material technology, applied in the rubber field, can solve the problems of increasing the difficulty of survival, low profit, and high pollution of reclaimed rubber enterprises, and achieve the effect of improving subsequent usable performance, stabilizing Mooney viscosity, and eliminating sulfhydryl groups.

Pending Publication Date: 2020-09-25
CHONGQING LINGFENG RUBBER PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the disconnection between new technology development and application research, the reclaimed rubber industry has always been struggling in the quagmire of high pollution, high input, low output, and low profit. difficulty of survival
[0003] The traditional method of reclaimed rubber mainly focuses on cutting waste tires, crushing them, magnetically separating them, grinding them into rubber powder, and then kneading them to obtain reclaimed rubber. This process is relatively simple, but the vulcanized rubber powder crushed by cutting machinery Irregular spheroids with edges, corners and cracks on the surface. During the desulfurization process, the softening oil added as an expansion agent and the cracking oil of the rubber powder itself will fill and wrap the surface of the powder, and the softening oil and cracking oil will The residual sulfhydryl groups will reconnect the broken disulfide bonds and polysulfide bonds, so that the Mooney value of the regenerated rubber after desulfurization will return to its original state.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of modified carbon nanotubes: Weigh 1 g of melamine and add it to 50 ml of methanol, stir magnetically at room temperature for 12 hours, add 200 mg of carbon nanotubes, continue magnetic stirring for 6 hours, keep the temperature at 70°C until the methanol is completely volatilized, and dissolve the remaining solid Placed in a muffle furnace, fired at 550° C. for 4 hours to obtain modified carbon nanotubes.

[0024] Pretreatment: Stir and mix 25wt% nitric acid and 30wt% sulfuric acid according to the volume ratio of 3:1 to obtain a mixed acid solution, and stir and disperse the modified carbon nanotubes according to a solid-to-liquid ratio of 1:100g / ml in the mixed acid solution, Place in an ultrasonic oscillator, raise the temperature to 70°C, keep warm and shake continuously for 10 hours, filter and wash with deionized water until the pH is 6-7, and dry.

[0025] Preparation of activated auxiliary particles: Weigh 25g of ferric chloride and dissolve it in ...

Embodiment 2

[0031] Preparation of modified carbon nanotubes: Weigh 1.64g of melamine and add it to 80ml of methanol, stir magnetically for 12h at room temperature, add 250mg of carbon nanotubes, continue magnetically stirring for 6h, and keep the temperature at 70°C until the methanol is completely volatilized. The solid was placed in a muffle furnace and calcined at 550° C. for 4 hours to obtain modified carbon nanotubes.

[0032] Pretreatment: Stir and mix 25wt% nitric acid and 30wt% sulfuric acid according to the volume ratio of 3:1 to obtain a mixed acid solution, and stir and disperse the modified carbon nanotubes according to a solid-to-liquid ratio of 1:100g / ml in the mixed acid solution, Place in an ultrasonic oscillator, raise the temperature to 70°C, keep warm and shake continuously for 10 hours, filter and wash with deionized water until the pH is 6-7, and dry.

[0033] Preparation of activated auxiliary particles: Weigh 40g of ferric chloride and dissolve it in 50ml of deioniz...

Embodiment 3

[0039] Preparation of modified carbon nanotubes: Weigh 2 g of melamine and add it to 65 ml of methanol, stir magnetically for 12 hours at room temperature, add 200 mg of carbon nanotubes, continue magnetically stirring for 6 hours, keep the temperature at 70°C until the methanol is completely volatilized, and dissolve the remaining solid Placed in a muffle furnace, fired at 550° C. for 4 hours to obtain modified carbon nanotubes.

[0040] Pretreatment: Stir and mix 25wt% nitric acid and 30wt% sulfuric acid according to the volume ratio of 3:1 to obtain a mixed acid solution, and stir and disperse the modified carbon nanotubes according to a solid-to-liquid ratio of 1:100g / ml in the mixed acid solution, Place in an ultrasonic oscillator, raise the temperature to 70°C, keep warm and shake continuously for 10 hours, filter and wash with deionized water until the pH is 6-7, and dry.

[0041] Preparation of activated auxiliary particles: Weigh 30g of ferric chloride and dissolve it...

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PUM

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Abstract

The invention discloses an environment-friendly recycled material, and relates to the technical field of rubber. According to the environment-friendly recycled material, a waste steel wire load-bearing outer tire tread is used as a raw material of the recycled material; the environment-friendly recycled material is prepared by the following steps of: crushing the raw material, removing impurities,adding an activating agent and activating auxiliary particles and performing microwave desulfurization activation regeneration, wherein the activating agent is a compound of a hydroxyl-terminated liquid nitrile rubber and vegetable oil, and the activating auxiliary particles are prepared by taking modified carbon nanotubes as a carrier, adsorbing and loading ferric chloride and then grafting isophorone diisocyanate. The invention discloses an environment-friendly recycled material, which can effectively eliminate sulfydryl groups on the surface of rubber powder and prevent broken disulfide bonds and polysulfide bonds on the surface of rubber particles from being reconnected by adding the activating agent and the activating auxiliary particles, thereby achieving the purpose of stabilizingMooney viscosity.

Description

technical field [0001] The invention relates to the technical field of rubber, in particular to an environmentally friendly recycled material. Background technique [0002] With the continuous development and rapid progress of the automobile industry, the accumulation and "production" of waste tires have gradually increased, which has caused serious impacts on environmental pollution and waste of resources. Based on this, in the prior art, there are a large number of technical documents to recycle waste tires, such as pyrolyzing waste tires to prepare products such as oil, gas and carbon black; using waste tires as raw materials to produce rubber powder and then preparing them into Reclaimed rubber and so on. However, due to the disconnection between new technology development and application research, the reclaimed rubber industry has always been struggling in the quagmire of high pollution, high input, low output, and low profit. difficulty of survival. [0003] The tra...

Claims

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Application Information

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IPC IPC(8): C08J11/28C08J11/20C08J11/16C08L17/00C08L45/02C08L91/00C08K5/09C08K3/06C08K5/47
CPCC08J11/16C08J11/20C08J11/28C08J2317/00C08L17/00C08L45/02C08L91/00C08K5/09C08K3/06C08K5/47Y02W30/62
Inventor 周亮唐轲李恝
Owner CHONGQING LINGFENG RUBBER PROD
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