Conductive composite colloid

By adjusting the particle size and formula ratio of conductive particles in the tire colloid, and combining polymer viscoelastic substances and non-conductive particles, the balance problem between conductivity and viscoelasticity is solved, meeting the performance requirements of different parts of the tire, and operating in extreme temperature environments. Maintaining conductivity at low temperatures achieves suitable resistance values ​​and rubber properties.

CN111592676AInactive Publication Date: 2020-08-28CHENG SHIN RUBBER IND CO LTD
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Patent Information

Application Number
CN201910129207.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2019-02-21
Publication Date
2020-08-28
Estimated Expiration
Not applicable · inactive patent

AI Technical Summary

Technical Problem

After adding conductive particles to the existing tire colloid, it is difficult to balance the conductivity and viscoelasticity, which affects the hardness and characteristics of the rubber. Especially under the use requirements of different parts, it is difficult to meet the requirements of wear resistance and flexibility. At the same time, the particle size of the conductive particles The diameter size has a great influence on the resistance value and affects the overall performance.

Method used

It uses a composite colloid mixed with polymer viscoelastic materials, conductive particles and non-conductive particles. By adjusting the particle size and formula ratio of the conductive particles, the resistance value is controlled to ensure appropriate hardness and electrical properties in different parts. It is suitable for tires Wear, flex and bead areas, and maintain conductivity in extreme temperature environments.

Benefits of technology

It achieves the balance between viscoelasticity and rubber properties while reaching the applicable resistance value, ensuring the performance requirements of different parts of the tire, and maintaining conductivity and viscoelasticity in the temperature range of minus 80°C to 220°C, avoiding excessive conductive particles. Or too little problem.

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Abstract

The invention relates to a conductive composite colloid comprising macromolecular viscoelastic substances and conductive particles which are mixed; when the conductive composite colloid is used for abrasion, the particle size of the conductive particles ranges from 1 nanometer to 22 micrometers, when the conductive composite colloid is used for deflection, the particle size of the conductive particles ranges from 20 micrometers to 60 micrometers, and the resistance of the conductive composite colloid ranges from 104 ohms to 10 <-1 > ohms. The particle size of the conductive particles and the additive amount are related to the resistance value; for example, a carbon nanotube having a formula ratio (PHR) of 2 to a polymer viscoelastic substance is mixed with carbon black having a formula ratio (PHR) of 28; the resistance value is 104 ohms, and relatively, the pure carbon black formula ratio (PHR) can reach 104 ohms only when reaching more than 85, and the conductive particles with different formula ratios and different particle sizes are adopted to obtain required electrical characteristics, such as tire measurement, signal transmission, electric power and the like.
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