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A kind of ceramic powder modified polyurethane/epoxy resin interpenetrating network elastomer

An epoxy resin and interpenetrating network technology, applied in the field of elastomers, can solve problems such as poor concentricity, poor wear resistance, and short life, and achieve the effect of improving dimensional stability and wear resistance

Active Publication Date: 2016-04-13
HUNAN YINGHONG SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Steel rollers: poor wear resistance, and the surface is prone to burrs after wear, which will scratch the belt and cause major economic losses; it is easy to rust, especially when used in acid, alkali, and salt environments; the service life is extremely short; the quality is heavy, Inconvenient for transportation, installation and maintenance, resulting in higher processing and maintenance costs
[0004] Ceramic roller: Although it has the advantages of wear resistance, oxidation resistance and acid and alkali resistance, it also has the disadvantages of high brittleness, heavy weight, inconvenient installation, and poor concentricity.
[0005] Ordinary polymer idlers: have the advantages of light weight, impact resistance, corrosion resistance, and low noise, but their properties such as wear resistance, heat resistance, weather resistance, and mechanical strength obviously cannot meet market demand

Method used

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  • A kind of ceramic powder modified polyurethane/epoxy resin interpenetrating network elastomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] First, silane coupling agent 560 is evenly dispersed on the surface of 800-mesh talc powder with a sprayer, and then placed in an environment of 130 ° C for 2 hours to obtain a modified ceramic powder; use polyethylene glycol oxalate, 2, 4-Toluene diisocyanate was reacted to obtain polyurethane prepolymer. Then the modified ceramic powder, bisphenol A epoxy resin and molten polyurethane prepolymer are mixed and dispersed evenly at high speed. The weight ratio of each component added is 10% of modified ceramic powder, 30% of bisphenol A epoxy resin, and 50% of polyurethane prepolymer. Vacuumize the air bubbles in the mixture; then add 2% of the catalyst dibutyltin dilaurate and 8% of the curing agent diaminodichlorodiphenylmethane to the mixture at 100°C, and finally inject it into the mold And curing under the environment of 110 ℃, wherein the polyurethane prepolymer and the epoxy resin polymerize, and the two types of molecular chains interpenetrate each other to form...

Embodiment 2

[0022] First, use a sprayer to uniformly disperse titanate on the surface of silicon carbide powder, and then place it in an environment of 120 ° C for 3 hours to obtain a modified ceramic powder; use phthalic anhydride diethylene glycol copolymer, 2,6-toluene di The reaction of isocyanates yields polyurethane prepolymers. Then the modified ceramic powder, novolac epoxy resin and molten polyurethane prepolymer are mixed and dispersed evenly at high speed. The weight ratio of each component added is 20% of modified ceramic powder, 10% of novolac epoxy resin, and 60% of polyurethane prepolymer. Vacuumize the air bubbles in the mixture; then add 1% of the catalyst dibutyltin dilaurate and 9% of the curing agent diaminodichlorodiphenylmethane to the mixture at 100°C, and finally inject it into the mold And curing under the environment of 90 ℃, wherein the polyurethane prepolymer and the epoxy resin polymerize, and the two types of molecular chains interpenetrate each other to for...

Embodiment 3

[0025] First, use a sprayer to uniformly disperse the aluminate on the surface of the alumina powder, and then place it in an environment of 80 ° C for 4 hours to obtain a modified ceramic powder; use polytetrahydrofuran diol, 4,4-diphenylmethane di The reaction of isocyanates yields polyurethane prepolymers. Then the modified ceramic powder, brominated epoxy resin and molten polyurethane prepolymer are mixed and dispersed evenly at high speed. The weight ratio of each component added is 5% of modified ceramic powder, 15% of brominated epoxy resin, and 65% of polyurethane prepolymer. Vacuumize the air bubbles in the mixture; then add 4% of the catalyst dibutyltin dilaurate and 11% of the curing agent diaminodichlorodiphenylmethane to the mixture at 100°C, and finally inject it into the mold And curing under the environment of 130 ℃, wherein the polyurethane prepolymer and epoxy resin polymerize, and the two types of molecular chains interpenetrate each other to form an interp...

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Abstract

The invention discloses a ceramic powder modified polyurethane / epoxy resin interpenetrating network elastomer which comprises the following components in percentage by weight: 5-20% of modifying ceramic powder, 10-40% of epoxy resin, 50-80% of polyurethane prepolymer, 1-4% of catalyst and 4-20% of curing agent. The network elastomer can be used as a carrier roller of a conveyor. In the presence of the modifying ceramic powder, the wear resistance of the elastomer is further improved, and the dimensional stability is improved to some degree. Due to the carrier roller prepared from the elastomer, the technical bottleneck that a traditional carrier roller cannot have high wear resistance, high toughness, high-temperature resistance and low-temperature resistance at the same time is solved.

Description

technical field [0001] The invention relates to elastomers, in particular to ceramic powder modified polyurethane / epoxy resin interpenetrating network elastomers. Background technique [0002] Belt conveyor rollers need to be made of materials with good wear resistance, corrosion resistance, impact resistance, light weight, heat resistance and other characteristics. At present, belt conveyor rollers mainly include steel rollers, There are several types of plastic idlers, ceramic idlers, etc. Due to the limitation of production materials, these types of idlers show various problems: [0003] Steel roller: poor wear resistance, and the surface is prone to burrs after wear, which will scratch the belt and cause major economic losses; it is easy to rust, especially when used in acid, alkali, and salt environments; the service life is extremely short; the quality is heavy, It is not convenient for transportation, installation and maintenance, resulting in higher processing costs...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/06C08L75/08C08L63/00C08K9/04C08K9/06C08K3/34C08K3/36C08K3/22
Inventor 谢志强
Owner HUNAN YINGHONG SCI & TECH
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