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Sulfur pre-dispersing mother rubber particle and preparation method thereof

A technology for pre-dispersing masterbatch and sulfur, applied in the field of rubber additives, can solve the problems of reduced deterioration speed and reduced powder loss.

Active Publication Date: 2013-02-13
CHAOYANG TIANMING IND TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reasons for this may be: reduced powder loss, improved dispersion, reduced rate of deterioration

Method used

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  • Sulfur pre-dispersing mother rubber particle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] The sulfur pre-dispersed masterbatch described in this example is composed of the following components in parts by mass: sulfur powder 80; EPDM 12; EVA 4; stearic acid 1; white oil 3.

[0027] The preparation steps of the sulfur pre-dispersed masterbatch particles described in the present embodiment are as follows:

[0028] ⑴Heat the plastic mixer to 90°C, adjust the roller distance to 0.5-1 mm, put EPDM and EVA into the plastic mixer according to the ratio and mix them evenly, then add stearic acid, after the mixing is even, take off the sheet, and cool down to room temperature for use .

[0029] ⑵ Mix the mixture obtained in ⑴ with sulfur powder and white oil according to the ratio on the open mill, and mix evenly, then tablet and granulate.

[0030] The sulfur pre-dispersed masterbatches prepared according to this embodiment are S-80A type sulfur pre-dispersed masterbatches. It is used in the tread rubber formulation for performance testing, and the test re...

Embodiment 2

[0032] The sulfur pre-dispersed masterbatch described in this example is composed of the following components in parts by mass: sulfur powder 80; EPDM 6; EVA 4; POE 6; stearic acid 1; white oil 3.

[0033] The preparation steps of the sulfur pre-dispersed masterbatch particles described in the present embodiment are as follows:

[0034] ⑴Heat the plastic mixer to 90°C, adjust the roller distance to 0.5-1 mm, put EPDM, POE and EVA into the plastic mixer according to the proportion and mix them evenly, then add stearic acid, after mixing evenly, release the sheet, and lower to room temperature stand-by.

[0035] ⑵ Mix the mixture obtained in ⑴ with sulfur powder and white oil according to the ratio on the open mill, and mix evenly, then tablet and granulate.

[0036] The sulfur pre-dispersed masterbatch prepared according to this embodiment is S-80B type sulfur pre-dispersed masterbatch. It is used in the tread rubber formulation for performance testing, and the test resul...

Embodiment 3

[0038] The sulfur pre-dispersed masterbatch described in this example is composed of the following components in parts by mass: sulfur powder 80; EVA 4; POE 12; stearic acid 1; white oil 3.

[0039] The preparation steps of the sulfur pre-dispersed masterbatch particles described in the present embodiment are as follows:

[0040] ⑴Heat the plastic mixer to 90°C, adjust the roller distance to 0.5-1 mm, put POE and EVA into the plastic mixer according to the ratio, mix evenly, add stearic acid, and mix evenly, then release the sheet, and lower it to room temperature for use .

[0041] ⑵ Mix the mixture obtained in ⑴ with sulfur powder and white oil according to the ratio on the open mill, and mix evenly, then tablet and granulate.

[0042] The sulfur pre-dispersed masterbatches prepared according to this embodiment are S-80C type sulfur pre-dispersed masterbatches. It is used in the tread rubber formulation for performance testing, and the test results are shown in Table 1.

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Abstract

The invention discloses sulfur pre-dispersing mother rubber particle and a preparation method thereof and relates to a rubber chemical. The sulfur pre-dispersing mother rubber particle is composed of the following components by mass: 80 parts of sulfur powder, 16 parts of base materials, 1 part of stearic acid and 3 parts of white oil, wherein the used base materials are composed of ethylene-propylene-diene monomer (EPDM), ethylene-vinyl acetate copolymer (EVA) and polyolefin elastomer (POE), the type of the used EPDM is 4045, the content of vinyl acetate in the EVA is 30%, and the type of the POE is 8108. The sulfur pre-dispersing mother rubber particle is pre-dispersing mother rubber particle obtained by evenly dispersing sulfur powder into a carrier and performing pelleting. The sulfur pre-dispersing mother rubber particle is particularly suitable for being applied to a formula of tread rubber, and can solve the problems of dust, mixing rate and the like in mixing of the tread rubber.

Description

technical field [0001] The invention relates to a rubber additive, in particular to a sulfur pre-dispersed masterbatch and a preparation method thereof. Background technique [0002] Pre-dispersed masterbatch is a physical mixture of a single substance or several substances and a carrier. This modified form or modified form of predispersed masterbatches is made to optimize the material for its specific application. [0003] Additive predispersed masterbatches can solve many problems, including: [0004] ①Prevent workers from direct contact with dangerous goods; [0005] ② Simplify the processing technology, facilitate mixing, facilitate work, save time and energy, and thus help reduce production costs. [0006] In the rubber industry, the demand for pre-dispersed masterbatches is increasing, and various forms of varieties have been developed one after another. In addition to improving hygiene and safety, pre-dispersed masterbatches also have economic advantages. For exam...

Claims

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Application Information

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IPC IPC(8): C08L23/16C08L23/08C08L31/04C08L23/20C08K3/06C08K5/09C08K5/01C08J3/22
Inventor 王重刘学彬毕文军张佳樑蒋洪敏于丽宫小曼郭翠翠
Owner CHAOYANG TIANMING IND TRADE
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