Novel rubber compound stuffing preparing method based on mercapto-alkene chemical reaction

A chemical reaction and composite filler technology, which is applied in the field of rubber fillers, can solve problems such as lack of synergistic effects, achieve good economic benefits and social effects, mild reaction conditions, and reduce surface energy

Inactive Publication Date: 2016-07-20
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They have a certain reinforcing effect on rubber products under the condition of a certain number of additions. However, the performance of a single filler reinforcing polymer is increasingly unable to meet the industrial requirements for high-performance rubber composite materials. In the composite material prepared by directly blending the filler with the polymer matrix, the two fillers exist independently of each other in the polymer. The surface energy of the same filler is close in thermodynamics, so it tends to self-polymerize. Synergistic Effects of Polymer Properties

Method used

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  • Novel rubber compound stuffing preparing method based on mercapto-alkene chemical reaction
  • Novel rubber compound stuffing preparing method based on mercapto-alkene chemical reaction
  • Novel rubber compound stuffing preparing method based on mercapto-alkene chemical reaction

Examples

Experimental program
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Effect test

Embodiment 1

[0023] (1) In a 1L three-neck flask, add 100 g of halloysite nanotubes and 500 mL of 95% ethanol, stir and ultrasonically disperse at room temperature for 30 minutes, so that the halloysite nanotubes are flocculent turbid liquid. Accurately weigh 9.94g (0.04mol) of γ-methacryloxypropyltrimethoxysilane (silane coupling agent KH570) into the halloysite nanotube suspension, raise the temperature to 30°C, add glacial acetic acid to adjust the pH To 6, mechanical stirring at this temperature, reflux reaction for 48 hours, all mechanical stirring speed is 20r / min. After the reaction was completed, suction filtration was carried out with a Buchner funnel, and the filter cake was washed with absolute ethanol until the pH value of the washing liquid was 7. The solid product was collected, dried at 80° C. for 48 hours, pulverized, and sieved to obtain halloysite nanotubes modified with γ-methacryloxypropyltrimethoxysilane.

[0024] (2) In a 1L three-neck flask, weigh 1.0g graphene oxid...

Embodiment 2

[0028](1) In a 500mL three-neck flask, add 10g of montmorillonite and disperse it in a mixed solvent composed of 180mL of n-propanol and 20mL of deionized water, stir and ultrasonicate for 30min at room temperature, until the montmorillonite is uniformly dispersed to form a stable suspension, and Add 1.48g (0.01mol) of vinyltrimethoxysilane (silane coupling agent A171) solution dropwise into the montmorillonite suspension, raise the temperature to 80°C, add glacial acetic acid, adjust the pH to 4.5, and mechanically stir (20r / min) , reacted for 24 hours. After the reaction was completed, suction filtration was carried out with a Buchner funnel, and the filter cake was washed with absolute ethanol until the pH value of the filtrate was 7. The collected solid product was dried at 90° C. for 36 hours, and ground into powder to obtain a modified montmorillonite whose surface was grafted with vinyltrimethoxysilane.

[0029] (2) In a 500mL three-neck flask, add 10g of untreated nan...

Embodiment 3

[0033] (1) In a 500mL three-neck flask, add 180mL of isopropanol and 20mL of deionized water, then weigh 10g of nano-zinc oxide and add it to the mixed solvent, stir and ultrasonically disperse at room temperature for 30min, and accurately weigh 3.23g (0.02mol) of vinyl triethylene Chlorosilane (silane coupling agent A150) was added to the nano-zinc oxide suspension, the temperature was raised to 60°C, glacial acetic acid was added, the pH was adjusted to 6, mechanically stirred at this temperature, refluxed for 48 hours, all mechanical stirring speed was 200r / min. After the reaction was completed, suction filtration was carried out with a Buchner funnel, and the filter cake was washed with absolute ethanol until the pH value of the washing liquid was 7. The collected solid product was dried at 80° C. for 48 hours, pulverized, and sieved to obtain the modified nano-zinc oxide surface-grafted with vinyltrichlorosilane.

[0034] (2) In a 500mL three-neck flask, add 180mL of ab...

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Abstract

The invention discloses a novel rubber compound stuffing preparing method based on mercapto-alkene chemical reaction. The preparing method comprises the following steps of using rubber common stuffing as a raw material, ultrasonically processing two kinds of stuffing to be compounded in solvents respectively to enable the stuffing to be evenly scattered, enabling a silane coupling agent containing double bonds and mercapto groups to react with hydroxide radicals or other oxygen-containing groups in structures of the two kinds of stuffing respectively to obtain the double bonds and two kinds of mercapto-group silane coupling agent modified stuffing, ultrasonically scattering the double bonds and the two kinds of double-bond mercapto-group silane coupling agent modified stuffing in a solvent, adding a photoinitiator, triggering the mercapto-alkene chemical reaction through exposure of ultraviolet light, connecting the two kinds of stuffing through chemical bonds, then centrifuging or filtering and separating, drying, smashing and sieving to obtain novel rubber compound stuffing. According to the preparing method, the stuffing is firstly modified through the silane coupling agent, and then the two kinds of stuffing are compounded in a chemical bond mode through the high-efficiency mercapto-alkene chemical reaction to obtain the novel rubber compound stuffing. In addition, the preparing method belongs to pioneering researches.

Description

technical field [0001] The invention relates to the technical field of rubber fillers, in particular to a preparation method of a novel rubber composite filler based on mercaptoene chemical reaction. Background technique [0002] Rubber, also known as "soft gold", is the only material with high elasticity so far, and it is one of the important materials used for human development. Rubber products are necessities in transportation, national defense, farmland water conservancy, and people's lives, and are considered important strategic materials. However, except for a few tensile self-reinforcing rubbers such as natural rubber and neoprene, the basic properties of most synthetic rubbers after direct vulcanization, such as modulus, tensile strength, tear strength, abrasion resistance, barrier properties, Electrical conductivity, thermal conductivity, etc., cannot meet the requirements of practical applications. Therefore, filling and reinforcing rubber is one of the essential ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K13/06C08K9/06C08K9/04C08K7/26C08K3/04C08K3/34C08K3/26C08K3/22C08L9/06C08L9/00C08L7/00
CPCC08K13/06C08K3/04C08K3/22C08K3/26C08K3/34C08K3/346C08K7/26C08K9/04C08K9/06C08K2003/2241C08K2003/2296C08K2003/265C08L9/06C08L9/00C08L7/00
Inventor 刘岚陈义中林勇罗文畅罗远芳
Owner SOUTH CHINA UNIV OF TECH
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