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Solid softener for rubber and preparation method thereof

A solid softener and softener technology, used in the field of rubber compounding agents, can solve problems such as difficulty in feeding, affecting the dispersion of fillers, and defects in product performance.

Active Publication Date: 2019-05-03
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These liquid softeners have the disadvantages of inconvenient transportation, leaking and dripping, difficulty in adding materials during use, difficulty in dispersing in rubber, and affecting the dispersion of fillers (carbon black, etc.)
[0003] As we all know, after adding a liquid softener to rubber, the softening and plasticizing effect of the softener will significantly reduce the viscosity of the rubber. It will make the agglomerated carbon black or other fillers unable to be well dispersed under the action of shear force, making the performance of the product defective

Method used

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  • Solid softener for rubber and preparation method thereof
  • Solid softener for rubber and preparation method thereof
  • Solid softener for rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: Environment-friendly solid softener for polar rubber

[0027] The produced solid softener contains the following components (wt.%): carbon nanotubes, white carbon black, polyethylene glycol, ethylene vinyl acetate, ester polar softener MESAMOLL, and its ratio is: 8: 9:0.5:2.5:80, the specific production steps are as follows:

[0028] 1. First add the softener MESAMOLL and the thermoplastic polymer material ethylene vinyl acetate into the reaction kettle, stir at a high temperature of 100°C, discharge the material after the ethylene vinyl acetate and softener are fully infiltrated, and place it in a constant temperature tank;

[0029] 2. Add carbon nanotubes, white carbon black, and polyethylene glycol into the stirring tank according to the above ratio at room temperature, close the top cover of the stirring tank, stir at a low speed, and the stirring speed is 300rpm;

[0030] 3. Slowly inject MESAMOLL and ethylene vinyl acetate impregnation material into...

Embodiment 2

[0032] Embodiment 2: high and low temperature resistant solid softener for polar rubber

[0033] The produced solid softener contains the following components (wt.%): carbon nanotubes, nano-kaolin, polyethylene glycol, thermoplastic styrene-butadiene rubber, ester polar softener TP95, and its ratio is: 8:8 :0.5:3.5:80, the specific production steps are as follows:

[0034] 1. First add the softener TP95 and thermoplastic styrene-butadiene rubber into the reaction kettle, stir at a high temperature of 150°C, and discharge the material after the thermoplastic styrene-butadiene rubber and softener are fully infiltrated, and place it in a constant temperature tank;

[0035] 2. Add carbon nanotubes, nano-kaolin, and polyethylene glycol into the stirring tank according to the above ratio at room temperature, close the top cover of the stirring tank, stir at a low speed, and the stirring speed is 300rpm;

[0036] 3. Slowly inject the softener TP95 and thermoplastic styrene-butadiene r...

Embodiment 3

[0038] Embodiment 3: Special environment-friendly solid softener for tires

[0039] The produced solid softener contains the following components (wt.%): carbon nanotubes, white carbon black, nano-kaolin, stearic acid, thermoplastic styrene-butadiene rubber, and environmentally friendly aromatic oil, and the ratio is: 7:5: 5:0.5:2.5:80, the specific production steps are as follows:

[0040] 1. First, add environmental-friendly aromatic oil and thermoplastic styrene-butadiene rubber into the reaction kettle, stir at a high temperature of 100°C, and discharge the material after the thermoplastic styrene-butadiene rubber and aromatic hydrocarbon oil are fully infiltrated, and place them in a constant temperature tank;

[0041] 2. Add carbon nanotubes, white carbon black, nano-kaolin, and stearic acid to the stirring tank at room temperature, close the top cover of the stirring tank, stir at a low speed, and the stirring speed is 300rpm;

[0042] 3. Slowly inject thermoplastic st...

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Abstract

The invention discloses a solid softener for rubber and a preparation method. The solid softener is prepared from a carbon nano tube, high-adsorption-performance packing, a surfactant, a thermoplastic macromolecular material and various softeners for rubber. Compared with a common liquid softener, the solid softener for rubber has the advantages that the rubber mixing time is shortened by 20 percent, the rubber mixing uniformity is obviously improved, and the comprehensive mechanical property of mixed rubber is obviously improved. The method is simple, efficient, environmental-friendly and pollution-free; a prepared product is convenient to transport, accurately weighed, quickly added and high in dispersity; the phenomena of escaping, popping out, leakage and dripping of the common liquid softener are avoided; moreover, the carbon nano tube and the high-adsorption-performance packing are also reinforcers capable of enhancing and improving the mechanical property of the rubber; the added thermoplastic macromolecular material is plasticized at relatively high temperature and then is wetted with the softener; and after being cooled, the thermoplastic macromolecular material can adsorb part of the softener, so that the solid powdered softener can still keep no agglomeration under a long-term gravity state.

Description

technical field [0001] The invention relates to a solid softener for rubber and a preparation method thereof, belonging to the field of rubber compounding agents. Background technique [0002] At this stage, the softener used in rubber products is usually a liquid oil softener. Patent CN201510739914 discloses a clean rubber softener, including 60-65% of extracted oil; 20-25% of residual oil; 10- 15%; EPDM rubber 2-2.5%, and the content of aromatics in the extracted oil is not higher than 20%. Patent CN201510877289 discloses a rubber softener, including 10-20 parts of ethylene glycol adipate, 5-10 parts of vegetable oil, 5-15 parts of vaseline, 10-20 parts of paraffin oil, 5-10 parts of asphalt, naphthene 5-10 parts of base oil. Patent CN201510042493 discloses an environment-friendly softener for tire rubber, which is prepared from the following raw materials in proportion by weight: cottonseed oil pitch 29, soybean oil pitch 50, tall oil pitch 10, fennel oil 10, rosin or t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L23/08C08L71/02C08K9/12C08K5/10C08K7/24C08K3/36C08K5/527C08L9/06C08K3/34C08L91/00C08K13/04C08K5/09C08L91/06C08L23/06C08L97/00C08K3/04C08K5/17
CPCC08K2201/011C08L9/06C08L23/0853C08L91/00C08L91/06C08L2205/03C08L71/02C08K9/12C08K5/10C08K7/24C08K3/36C08K3/346C08K13/04C08K5/09C08L23/06C08L97/005C08K3/04C08K5/17
Inventor 肖建斌马文斌张培亭高洪强刘伟
Owner QINGDAO UNIV OF SCI & TECH
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