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Environmentally-friendly rubber accelerator modified filling material,, and preparation method and application thereof

A rubber accelerator and an environmentally friendly technology, which is applied in the field of modified fillers and preparations of environmentally friendly accelerators, can solve the problems of easy aggregation of accelerators and low vulcanization rate, and achieve the effects of reducing agglomeration, improving interface properties, and weakening interactions

Inactive Publication Date: 2020-06-19
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of easy agglomeration and low vulcanization rate caused by uneven dispersion of the accelerator in the rubber vulcanization process, the invention provides an efficient, multi-functional, and environmentally friendly accelerator by loading the environmentally friendly accelerator on the surface of the filler. Rubber modified filler, preparation method and application

Method used

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  • Environmentally-friendly rubber accelerator modified filling material,, and preparation method and application thereof
  • Environmentally-friendly rubber accelerator modified filling material,, and preparation method and application thereof
  • Environmentally-friendly rubber accelerator modified filling material,, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Add 15g of precipitated silica into a 1000ml three-necked flask, then add 600ml of absolute ethanol, stir evenly under nitrogen protection, add 5ml of silane coupling agent γ-glycidyl etheroxypropyltrimethoxysilane (KH560), in React for 13 hours under nitrogen protection at 50°C. suction filtration, washing, and vacuum drying to obtain silane coupling agent modified white carbon black. Add 2g of accelerator NS, add 0.2g of NaOH, and react at 60°C for 9 hours under the protection of nitrogen. The product is filtered, washed, and dried in vacuum to obtain the environmental accelerator modified filler SiO 2 -s-NS.

[0038] The above-mentioned environmental accelerator modified filler SiO 2 -s-NS infrared spectrum (see figure 1 ) shows that at 2890cm -1 A new absorption peak appeared at 1231cm -1 The absorption peak at is obviously broadened, indicating that the accelerator NS has been grafted on the surface of the filler through the silane coupling agent. Thermograv...

Embodiment 2

[0042] Disperse 10g of montmorillonite in 500ml of petroleum ether solvent, add 1ml of γ-glycidyl etheroxypropyl trimethoxysilane (KH560), stir at 40°C for 3 hours under the protection of nitrogen, wash with suction, and put in Drying in a vacuum oven at 50° C. for 24 hours to obtain silane coupling agent-modified montmorillonite (m-MMT). Then the obtained MMT was dispersed in petroleum ether, 2 g of N-tert-butyl-2-benzothiazole sulfenamide was added, and stirred at 70° C. for 13 hours under the protection of nitrogen. After suction filtration, washing, and drying in a vacuum oven at 50°C for 24 hours, the environmental accelerator modified montmorillonite (MMT-s-NS) was obtained.

[0043] The obtained product was confirmed to be the target product through elemental analysis and infrared spectrum analysis. The weight loss rate was determined to be 2.17% through thermogravimetric analysis.

[0044] Using the montmorillonite (MMT-s-NS) modified by the environmental protection ...

Embodiment 3

[0046] Disperse 10g of halloysite nanotubes (HNTs) in 300ml of absolute ethanol, slowly add 2.5ml of γ-glycidyl etheroxypropyltrimethoxysilane (KH560) dropwise at 60°C, and stir to react 8 Hours, after suction filtration and washing, drying in a real power oven at 50°C for 13 hours to obtain silane coupling agent-modified halloysite nanotubes (m-HNTs), the obtained silane coupling agent-modified halloysite nanotubes The tube (m-HNTs) was dispersed in 300ml of petroleum ether, 3g of N-tert-butyl-2-benzothiazole sulfenamide was added, and reacted at 80°C for 5 hours under the protection of nitrogen, and the obtained product was filtered, washed, The environment-friendly promoter-modified halloysite nanotubes (HNTs-s-NS) were obtained by drying in a vacuum oven at 50°C for 24 hours.

[0047] Infrared spectrum and nuclear magnetic resonance showed that the synthesized product was the Japanese standard product HNTs-s-NS. Thermogravimetric analysis showed that the mass fraction of ...

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Abstract

The invention discloses an environmentally-friendly rubber accelerator modified filling material, and a preparation method and an application thereof. The preparation method comprises the following steps: allowing a silane coupling agent, namely gamma-glycidoxypropyltrimethoxysilane (KH560) to react with a filling material dispersed in an organic solvent under stirring at 40-60 DEG C under the protection of nitrogen, then adding an accelerator NS, and carrying out a reaction at 60-80 DEG C under the protection of nitrogen; and carrying out suction filtration on a product, and carrying out washing and vacuum drying so as to obtain the environmentally-friendly rubber accelerator modified filling material. The surface of the environmentally-friendly rubber accelerator modified filling material is grafted with an organic micromolecule accelerator, so the surface performance of the filling material is improved, and the filling material can be more uniformly dispersed in rubber; meanwhile, the effects of reinforcing and promoting vulcanization are achieved, and the rolling resistance of a tire can be obviously reduced. The environmentally-friendly rubber accelerator modified filling material can reduce the problem of migrating and blooming of micromolecules in rubber products, is an environmentally-friendly rubber auxiliary agent, and has good application and use prospects in the rubber industry.

Description

technical field [0001] The invention relates to the fields of rubber additive preparation and rubber vulcanization, in particular to an environmental accelerator modified filler and its preparation method and application. Background technique [0002] Rubber is a material with excellent viscoelasticity and is widely used in various aspects of industry and life. However, unvulcanized rubber can be used in a narrow temperature range and its performance is unstable. Therefore, in the actual processing process, it is necessary to add a vulcanization accelerator that can promote the crosslinking of rubber, so that the rubber can be vulcanized quickly, and the linear chain molecular structure is crosslinked into a three-dimensional network macromolecule, so that the rubber becomes a practical material. value of vulcanized rubber. [0003] Rubber vulcanization accelerators are divided into eight types from the chemical structure, but most accelerators are easy to control the vulc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/06C08K3/36C08K5/47C08K3/34C08K7/26C08L7/00C08L9/06
CPCC08K3/346C08K3/36C08K5/47C08K7/26C08K9/06C08K2201/011C08L7/00C08L9/06C08K13/06Y02T10/86
Inventor 罗远芳白洁陈丽娟陈勇军郭晓慧贾德民
Owner SOUTH CHINA UNIV OF TECH
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