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A kind of pre-dispersed comprehensive anti-scorch accelerator masterbatch and preparation method thereof

A technology of pre-dispersion and accelerator, applied in the field of pre-dispersion comprehensive anti-scorch accelerator masterbatch and its preparation, to achieve the effects of accurate feeding, overcoming high toxicity and shortening vulcanization time

Active Publication Date: 2016-02-10
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the deficiencies of the prior art, the present invention provides a pre-dispersed comprehensive anti-scorch accelerator masterbatch and its preparation method. The accelerator NS and the anti-scorch agent CTP are used as the main raw materials for compound granulation. The product Low Mooney viscosity, better dispersibility with rubber, easy to disperse evenly in rubber, and improve the quality of rubber products; expand the scope of use of accelerator NS, overcome the toxicity of some products that cannot use NS and use NOBS defects; and it is used in the rubber processing process for accurate feeding, prolonged scorch time, shortened vulcanization time, energy saving, accurate feeding, etc., in line with the concept of "green chemical industry"

Method used

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  • A kind of pre-dispersed comprehensive anti-scorch accelerator masterbatch and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A pre-dispersed comprehensive anti-scorch accelerator masterbatch, composed of the following materials in parts by weight: 60 parts of accelerator NS, 7 parts of anti-scorch agent CTP, 5 parts of carrier rubber, 8 parts of naphthenic mineral oil, 3 parts of paraffin, 2 servings of PETS.

[0025] The carrier rubber is 5 parts of natural rubber NR.

[0026] The method for preparing the pre-dispersed comprehensive anti-scorch accelerator masterbatch, the specific steps are as follows:

[0027] (1) According to the formula ratio, plasticize the carrier rubber and PETS evenly in an open mixer with a speed of 24r / min, and then put them into an internal mixer equipped with CTP, NS, naphthenic mineral oil, paraffin and PETS at 110r / min / min speed, kneading at a temperature of 45°C, after mixing evenly, discharge;

[0028] (2) Put the material obtained in step (1) into the transport hopper, transport it to a conical twin-screw kneader with a rotation speed of 110r / min, and dir...

Embodiment 2

[0032] A pre-dispersed comprehensive anti-scorch accelerator masterbatch, composed of the following materials in parts by weight: 65 parts of accelerator NS, 12 parts of anti-scorch agent CTP, 11.5 parts of carrier rubber, 9 parts of naphthenic mineral oil, 1 part of paraffin, PETS1.5 copies.

[0033] The carrier rubber is 6 parts of natural rubber NR and 5.5 parts of butadiene rubber.

[0034] The method for preparing the pre-dispersed comprehensive anti-scorch accelerator masterbatch, the specific steps are as follows:

[0035] (1) According to the formula ratio, plasticize the carrier rubber and PETS evenly in an open mixer with a speed of 24r / min, and then put them into an internal mixer equipped with CTP, NS, naphthenic mineral oil, paraffin and PETS at 190r / min / min speed, kneading temperature of 60°C, after mixing evenly, discharge;

[0036] (2) Put the material obtained in step (1) into the transport hopper, transport it to a conical twin-screw kneader with a rotatio...

Embodiment 3

[0040] A pre-dispersed comprehensive anti-scorch accelerator masterbatch, composed of the following materials in parts by weight: 71 parts of accelerator NS, 9 parts of anti-scorch agent CTP, 10 parts of carrier rubber, 7 parts of naphthenic mineral oil, 2 parts of paraffin, 1 serving of PETS.

[0041] The carrier rubber is 8 parts of EPDM and 2 parts of styrene-butadiene rubber.

[0042] The method for preparing the pre-dispersed comprehensive anti-scorch accelerator masterbatch, the specific steps are as follows:

[0043] (1) According to the formula ratio, plasticize the carrier rubber and PETS evenly in an open mixer with a speed of 24r / min, and then put them into an internal mixer equipped with CTP, NS, naphthenic mineral oil, paraffin and PETS at 160r / min Kneading at a speed of 1 / min and a temperature of 70°C, after mixing evenly, discharge;

[0044] (2) Put the material obtained in step (1) into the transport hopper, transport it to a conical twin-screw kneader with a...

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Abstract

The invention provides a comprehensive predispersed anti-scorching accelerant and a preparation method of the comprehensive predispersed anti-scorching accelerant. An accelerant NS (N-tert-butylbenzothiazole-2-sulphenamide) and an anti-scorching agent CTP (N-cyclohexylthio phthalimide), which are used as main raw materials, are compounded and granulated, the obtained product has low Mooney viscosity and good dispersibility with rubber, and is easy to disperse in rubber uniformly, so as to improve the quality of a rubber product, expand the using range of the accelerant NS and overcome the defect that certain products cannot use the NS and use N0BS with high toxicity; and besides, the comprehensive predispersed anti-scorching accelerant has accuracy in feeding, prolongs the scorching time, shortens the vulcanizing time, and saves the energy and the like when being applied to rubber processing, and meets the concept of green chemical industry.

Description

technical field [0001] The invention relates to a rubber additive and a preparation method thereof, in particular to a masterbatch of a pre-dispersed comprehensive anti-scorch accelerator and a preparation method thereof. Background technique [0002] Accelerators commonly used in tire production include sulfenamide accelerators and thiazole accelerators. Thiazole accelerators are generally non-toxic, but their short scorch time and slow vulcanization speed determine that they mainly appear as the second accelerator in tire production, and the actual dosage is small. The main application varieties are accelerator M and accelerator Agent DM. The sulfenamide accelerator occupies the first place among the accelerators used in tire production due to its comprehensive performance of good processing safety, fast vulcanization speed and high physical and mechanical properties. Commonly used accelerators include accelerators NOBS, NS, etc. Among these varieties , the accelerator N...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L7/00C08L23/16C08L9/06C08K5/00C08K5/47C08K5/378C08K5/01C08J3/22B29B9/06
Inventor 李春鹏吴文雷栾波樊其艳
Owner CHAMBROAD CHEM IND RES INST CO LTD
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