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Thermo-oxidative ageing resistant epoxidized natural rubber composite material and preparation method thereof

A technology of epoxidized natural rubber and natural rubber, which is applied in the field of epoxidized natural rubber composite materials and its preparation, can solve the problems of limiting the application of epoxidized natural rubber, short storage time, and short service life, and achieve thermal oxidation Good thermal stability, simple technical process, good wet skid resistance

Active Publication Date: 2014-12-10
AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, epoxidized natural rubber products are prone to rubber aging due to the influence of environmental factors during processing or use. Therefore, epoxidized natural rubber products generally have problems such as short storage time, short service life, and aging stickiness. The application of epoxidized natural rubber is largely limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] First convert 3 parts of the laminate cation to Mg 2+ Or Al 3+ , The interlayer anion is CO 3 2-, OH - , SO 4 2- , NO 3 - Or Cl - , Hydrotalcite with an average particle size of 0.5-1.2μm is added to 20ml of deionized water, while stirring and ultrasonically dispersed, add 5% (weight) Si-69 of the hydrotalcite, and place it in a 30℃ water bath Stir continuously for 24 hours, then add 100 parts of dry rubber epoxidized natural rubber latex with an epoxidation degree of 5%, and continue to stir ultrasonically for 0.6 hours to obtain a latex state hydrotalcite / epoxidized natural rubber composite material; The hydrotalcite / epoxidized natural rubber composite material in the emulsion state is coagulated, tableted, granulated, and dried to obtain the hydrotalcite / epoxidized natural rubber composite material in the dry rubber state. This composite material was mixed with various ingredients according to the formula shown in Table 1 to obtain a rubber compound. After the rubber c...

Embodiment 2

[0044] First convert 10 parts of the laminate cation to Mg 2+ Or Al 3+ , The interlayer anion is CO 3 2- , OH - , SO 4 2- , NO 3 - Or Cl - , Hydrotalcite with an average particle size of 0.5-1.2μm is added to 30ml of deionized water, while stirring and ultrasonically dispersed, add 7% (weight) sodium stearate of the hydrotalcite, and place it in a 35℃ water bath Stir continuously for 24 hours, then add 100 parts of dry rubber epoxidized natural rubber latex with an epoxidation degree of 20%, and continue ultrasonic stirring for 0.6 hours to obtain a latex state hydrotalcite / epoxidized natural rubber composite material; use coagulant The hydrotalcite / epoxidized natural rubber composite material in the milk state is coagulated, tableted, granulated, and dried to obtain the hydrotalcite / epoxidized natural rubber composite material in the dry rubber state. This composite material is mixed with various ingredients according to the formula shown in Table 1 to obtain a rubber compound....

Embodiment 3

[0052] First convert 20 parts of the laminate cation to Mg 2+ Or Al 3+ , The interlayer anion is CO 3 2- , OH - , SO 4 2- , NO 3 - Or Cl - , Hydrotalcite with an average particle size of 0.5-1.2μm is added to 40ml of deionized water, while stirring and ultrasonically dispersed, add 7% (weight) KH 550 of the hydrotalcite, and place it in a water bath at 40℃ for continuous stirring 24h, then add 100 parts of dry rubber epoxidized natural rubber latex with an epoxidation degree of 40%, and continue ultrasonic stirring for 1h to obtain a latex state hydrotalcite / epoxidized natural rubber composite material; The hydrotalcite / epoxidized natural rubber composite material is coagulated, tableted, granulated, and dried to obtain the hydrotalcite / epoxidized natural rubber composite material in a dry state. This composite material was mixed with various ingredients according to the formula shown in Table 1 to obtain a rubber compound. After the rubber compound was parked at room temperatur...

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Abstract

The invention discloses a hydrotalcite / epoxidized natural rubber composite material and a preparation method thereof. The preparation method comprises the following steps: modifying hydrotalcite and dispersing the modified hydrotalcite by using deionized water; adding epoxidized natural rubber latex, continuously and ultrasonically stirring to obtain a hydrotalcite / epoxidized natural rubber composite material at a rubber latex state; and adding vulcanization processing aids, thereby obtaining an ageing-resistant epoxidized natural rubber composite material. The thermo-oxidative ageing resistant epoxidized natural rubber composite material with excellent performance, prepared by the invention, can be used for high-performance tires, medical rubber latex products, rubber tubes, shoe soles and other epoxidized natural rubber products.

Description

【Technical Field】 [0001] The invention relates to an epoxidized natural rubber composite material and a preparation method thereof, in particular to a heat-resistant oxygen aging epoxidized natural rubber composite material and a preparation method thereof. 【Background technique】 [0002] Epoxidized natural rubber is obtained by epoxidizing natural rubber. It is usually prepared by adding formic acid or acetic acid and hydrogen peroxide to natural rubber latex under acidic conditions. Since epoxidized natural rubber introduces epoxy groups into natural rubber molecules, it leads to an increase in the polarity of the rubber molecules and the force between the rubber molecules, so that it has some special properties, such as excellent air tightness resistance. Resistance, oil resistance, good wet skid resistance and low rolling resistance, and good adhesion. Therefore, epoxidized natural rubber has a wide range of uses, especially in the application of green tires. Because epoxidi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08K13/06C08K9/06C08K9/00C08K3/26C08K3/22C08K3/06C08K5/09C08J3/24C08C19/06
Inventor 杨昌金罗勇悦彭政钟杰平许逵
Owner AGRI PRODS PROCESSING RES INST CHINESE ACAD OF TROPICAL AGRI SCI
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