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A kind of hydrophobic silicon dioxide modified rubber and its preparation method

A technology of hydrophobic silica and modified rubber, applied in the field of modified rubber materials, can solve the problems of low modification effect of silica particles, ineffective distribution of coupling agent, and reduced overall performance of rubber, and achieve good moisture resistance. Slip and grip, good economy, good anti-skid and wear-resistant properties

Active Publication Date: 2019-06-14
成都纵横创新科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN104475693 C mentions adding a silane coupling agent to the formula, but the sulfide silane coupling agent is mixed with silica and other components at the same time, the coupling effect is poor, and the coupling agent cannot be effectively distributed on the surface of silica, resulting in The modification effect of silica particles is low, and when the amount of coupling agent added is large, the viscosity of the rubber will increase greatly, the overall performance of the rubber will decrease, the amount of wear will increase, and the friction coefficient will decrease

Method used

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  • A kind of hydrophobic silicon dioxide modified rubber and its preparation method
  • A kind of hydrophobic silicon dioxide modified rubber and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] 55wt% isoprene rubber, 10wt% polybutene, 5wt% modified nano silica (modified SiO 2 A), 15wt% aromatic oil, 5wt% carbon black, 2.4wt% zinc oxide, 1.5wt% sulfur, 2.1wt% vulcanization accelerator, 1.5wt% antioxidant, 2wt% antioxidant, 0.5wt% stearic acid;

[0031] First, 55wt% of the rubber matrix was milled for 0.5 hour on a 50-80°C mill, and then 5wt% of the modified nano-silica (modified SiO 2 A) Add kneading and mixing for 15 minutes, control the temperature below 100°C, then take out the sheet, and move it to the internal mixer, then add 10wt% polybutene, 2.4wt% zinc oxide, 2wt% anti-aging agent, 1.5wt% % antioxidant, 1.5wt% sulfur, 2.1wt% vulcanization accelerator, 5wt% carbon black, finally add 15wt% aromatic oil and masticate for 30min, the banburying temperature is between 100-120°C; sliced ​​and packaged for later use;

[0032] After the prepared rubber sheet was parked at room temperature for 8 hours, according to the "hardness test method of vulcanized rubber...

Embodiment 2

[0034] 50wt% butadiene rubber, 10wt% polyisobutylene, 10wt% modified nano silica (modified SiO 2 A), 15wt% paraffin oil, 5wt% carbon black, 2.4wt% zinc oxide, 1.5wt% sulfur, 2.1wt% vulcanization accelerator, 1.5wt% antioxidant, 2wt% antioxidant, 0.5wt% stearic acid;

[0035] First, 50wt% butadiene rubber matrix was milled for 0.5 hour on a 50-80°C open mill, and then 10wt% modified nano-silica (modified SiO 2A) Add kneading and mixing for 15 minutes, control the temperature below 100°C, then take out the sheet, and move it to the internal mixer, then add 10wt% polyisobutylene, 2.4wt% zinc oxide, 2wt% anti-aging agent, 1.5wt% Antioxidant, 1.5wt% sulfur, 2.1wt% vulcanization accelerator, 5wt% carbon black, and finally add 15wt% paraffin oil for masticating for 30 minutes, and the banburying temperature is between 100-120°C; and packaged for later use;

[0036] After the prepared rubber sheet was parked at room temperature for 8 hours, according to the "hardness test method of ...

Embodiment 3

[0038] 48wt% styrene-butadiene rubber, polybutylene and styrene-isoprene-styrene each 5wt%, 12wt% modified nano silica (modified SiO 2 A), 15wt% naphthenic oil, 5wt% carbon black, 2.4wt% zinc oxide, 1.5wt% sulfur, 2.1wt% vulcanization accelerator, 1.5wt% antioxidant, 2wt% antioxidant, 0.5wt% stearic acid;

[0039] First, the 48wt% styrene-butadiene rubber matrix was milled for 0.5 hour on a 50-80°C open mill, and then 12wt% modified nano-silica (modified SiO 2 A) Add in milling and mixing for 15 minutes, control the temperature below 100°C, then take out the sheet, and move it to the internal mixer, then add polybutene and styrene-isoprene-styrene respectively 5wt%, 2.4 wt% zinc oxide, 2wt% antioxidant, 1.5wt% antioxidant, 1.5wt% sulfur, 2.1wt% vulcanization accelerator, 5wt% carbon black, finally add 15wt% naphthenic oil and masticate for 30min, banburying temperature is 100- Between 120°C; finally transferred to the open mill to produce flakes and packaged for later use;

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Abstract

The invention discloses a hydrophobic silicon dioxide used for modifying rubber. The formula and ratio are as follows: 40-60wt% of rubber matrix, 1-10wt% of other matrix resins, 5-25wt% of modified nano-silica, and 5% of filler oil ‑15wt%, additives 3‑15wt%. The invention also discloses a preparation method. The modified rubber material of the present invention improves the interface between silica and rubber, and plays a good reinforcing role. The nano-effect of silica makes the modified rubber have excellent wear resistance and high friction coefficient , has excellent anti-skid performance on water film interface or oil film interface, and can be used in anti-skid fields such as rubber tires and shoe sole materials.

Description

Technical field: [0001] The invention belongs to the field of modified rubber materials, and in particular relates to a hydrophobic silicon dioxide modified rubber and a preparation method. Background technique: [0002] The wear and tear of rubber and the friction coefficient of rubber are the key indicators for judging the use of rubber materials in high friction environments. At present, the most effective method is to add nano-fillers to rubber materials, such as nano-calcium carbonate, nano-carbon black and nano-silica. Among them, nano-silica is the most commonly used. For example, patent CN 103857743 B provides a rubber composition for studless tires and studless tires, the rubber composition includes rubber, aromatic oil, silica, and carbon black. This method of processing rubber tires effectively improves the friction performance of rubber, especially the anti-wet skid performance, grip performance and wear resistance on ice and snow. Patent CN 104277344 B disclos...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/00C08L9/06C08L11/00C08L9/02C08L23/22C08L23/20C08L91/00C08L91/06C08L53/02C08K13/06C08K9/08C08K9/04C08K3/36C08K3/04
CPCC08K2201/006C08K2201/011C08L9/00C08L9/02C08L9/06C08L11/00C08L23/22C08L2205/03C08L2205/035C08L23/20C08L91/00C08K13/06C08K9/08C08K9/04C08K3/36C08K3/04C08L91/06C08L53/02
Inventor 何波兵蒋楠
Owner 成都纵横创新科技有限公司
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