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Accessory ingredient pre-dispersed masterbatch used for refining sizing material and preparation method thereof

A pre-dispersion and additive technology, applied to a new form of additives used in the rubber compounding process and its preparation field, can solve problems affecting production efficiency and safety, additive flying, uneven dispersion of additives, etc. , to achieve the effect of improving the degree of automation, improving production efficiency and reducing dust hazards

Active Publication Date: 2012-06-27
特拓(青岛)轮胎技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] (1) Due to the short time and low temperature of the final refining in the traditional multi-step rubber mixing process, when a large amount of powdery, flake-like, and granular additives are put in, it will cause uneven dispersion of the additives and affect the uniformity of the rubber compound. performance and life of the final rubber product;
[0008] (2) Especially for temperature-sensitive chemical additives such as insoluble sulfur, the stability and dispersion uniformity of the additives cannot be guaranteed at the same time;
[0009] (3) When a large amount of powdered additives are put into the internal mixer or open mixer, the additives will fly, which will affect the accuracy of the formula, affect the production efficiency and safety, and pollute the environment;
[0010] (4) The additives put into the open mill in the one-step rubber mixing process must be in the form of pre-dispersed film, otherwise it is impossible to complete fully automatic open mixing on the open mill

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Embodiment 1 Accelerator Masterbatch

[0040] Accelerator masterbatch consists of the following components:

[0041] Styrene butadiene rubber SBR1500 100 parts;

[0042] Accelerator NS 120 parts;

[0043] 5 parts of zinc oxide;

[0044] 5 parts of stearic acid;

[0045] 1 part of blue color masterbatch.

[0046] Its preparation method is as follows:

[0047] 1) Add 100 parts of styrene-butadiene rubber SBR1500 and 50% accelerator NS to the mixer room under the conditions of filling factor 0.7 and mixer temperature 20°C;

[0048] 2) After 2 minutes, add the remaining accelerator NS, zinc oxide, stearic acid, and blue masterbatch, and after 4 minutes, lift the plug and press the plug;

[0049] 3) Debinding at 100°C or 8 minutes;

[0050] 4) Send the material obtained in the above step into the open mill, the roll speed of the open mill is 30m / min, the roll temperature is 30°C, the roll cooling: 3 times, the glue guiding time: 6min;

[0051] 5) Film cooling: releas...

Embodiment 3

[0063] Embodiment 3 Adhesive HMT masterbatch

[0064] Adhesive HMT masterbatch consists of the following components:

[0065] 80 copies of No. 20 glue;

[0066] 20 parts of styrene-butadiene rubber SBR1500;

[0067] Adhesive HMT 90 parts;

[0068] Zinc stearate 5 parts.

[0069] Its preparation method is as follows:

[0070] 1) Add 80 parts of No. 20 standard rubber and 20 parts of styrene-butadiene rubber SBR1500 to the internal mixer chamber under the condition of a filling factor of 0.7 and an internal mixer temperature of 20°C, and add all the adhesives HMT and zinc stearate ;

[0071] 2) After 2 minutes, lift the plug and press the plug;

[0072] 3) At 105°C or 7 minutes, deglue;

[0073] 4) Send the material obtained in the above step into the open mill, the roll speed of the open mill is 30m / min, the roll temperature is 20°C, the roll cooling: 3 times, the glue guiding time: 5min;

[0074] 5) Film cooling: release agent concentration: 5%wt, cooling time: 30min. ...

Embodiment 4

[0075] Embodiment 4 antioxidant 4020 masterbatch

[0076] Antiaging agent 4020 masterbatch is composed of the following components:

[0077] Styrene butadiene rubber SBR1500 100 parts;

[0078] Anti-aging agent 4020 80 parts;

[0079] Zinc oxide 20 parts.

[0080] Its preparation method is as follows:

[0081] 1) Add 100 parts of styrene-butadiene rubber SBR1500 to the mixer room under the conditions of filling factor 0.8 and mixer temperature 20°C;

[0082] 2) After 30 seconds, add all the anti-aging agent 4020 and zinc oxide, and after 2 minutes, lift the plug and press the plug;

[0083] 3) At 90°C or 6 minutes, deglue;

[0084] 4) Send the material obtained in the above step into the open mill, the roll speed of the open mill is 30m / min, the roll temperature is 20°C, the roll cooling: 3 times, the glue guiding time: 5min;

[0085] 5) Film cooling: release agent concentration: 5%wt, cooling time: 30min.

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PUM

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Abstract

The invention discloses an accessory ingredient pre-dispersed masterbatch and a preparation technology thereof. Powdery or granular accessory ingredient is dispersed into a rubber matrix to form a new evenly-mixed flaky accessory ingredient form which has small possibility of flying. The preparation technology has the beneficial effect that the accessory ingredient is pre-dispersed in the rubber matrix. Compared with the traditional powder or granules, the accessory ingredient pre-dispersed masterbatch is characterized in that the flaky masterbatch does not have flying and scattering loss in the using process to guarantee the accuracy of the formula and improve the quality and the stability of the sizing material; because the accessory ingredient is subjected to the pre-dispersed mixing process, the accessory ingredient masterbatch can be quickly and easily dispersed into the sizing material in the using process, and the dispersibility of the accessory ingredient as well as the uniformity and the production efficiency of the sizing material are improved; the flaky accessory ingredient pre-dispersed masterbatch is more suitable for automatically or semi-automatically weighing, the automation degree of the whole production system is improved, and the production efficiency is improved.

Description

technical field [0001] The present invention relates to a new form of raw materials in the manufacture of tires and other rubber products, in particular to a new form of auxiliary agents used in rubber compounding process and its preparation method. Background technique [0002] The rubber mixing process is the first link in the production process of rubber products, especially tires. The quality of the rubber mixing effect is directly related to whether the following processes can be carried out smoothly and the final quality of the product. [0003] The rubber mixing process is the process of fully mixing natural rubber, synthetic rubber or other types of rubber with various fillers, plasticizers, anti-aging agents, vulcanizing agents and other chemical additives. The rubber mixing is carried out in an internal mixer or on an open mill. [0004] The traditional rubber mixing process is generally divided into two steps, master mixing and final mixing. Masterbatch is the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/06C08L7/00C08K13/02C08K3/22C08K5/09C08K3/06C08K5/098C08K5/01B29B7/28B29B7/72
Inventor 李红卫郑昆边祥忠陈虎顾培霜
Owner 特拓(青岛)轮胎技术有限公司
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