Coating wear-resistant agent and preparation method and application thereof

An anti-wear agent and coating technology, which is applied in the field of paint anti-wear agent and its preparation, can solve the problems of inferior wear resistance and waterproof performance as wax, affecting the effect of wear resistance and sliding, hindering floating and aggregation, etc., and achieves excellent wear resistance. Effects of scratch resistance, excellent smooth hand feel, and good storage stability

Active Publication Date: 2016-03-16
INST OF CHEM ENG GUANGDONG ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PTFE wax has two major disadvantages: firstly, it is more expensive, and secondly, its relative density is high, and it is easy to produce precipitation in the coating, which hinders its necessary floating and aggregation on the surface of the coating film, and affects its wear-resistant and slippery effect.
However, although polyether (polyester) modified polysiloxane coating wear-resistant agents are much better than wax-based wear-resistant agents in terms of slippage and system compatibility, their wear-resistant and waterproof properties are not as good as wax-based wear-resistant agents.

Method used

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  • Coating wear-resistant agent and preparation method and application thereof
  • Coating wear-resistant agent and preparation method and application thereof
  • Coating wear-resistant agent and preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0076] Corresponding to above-mentioned formula or the preparation method of the paint wear-resisting agent of preferred formula, comprises the following steps:

[0077] 1) dissolving the reinforcing filler in an organic solvent in advance to obtain a reinforcing filler solution;

[0078] 2) Add the ultra-high molecular weight polysiloxane, composite emulsifier and reinforcing filler solution into the dispersing kettle, disperse at 80-120°C for 1-3 hours, and cool down to 20-40°C after the materials are evenly stirred;

[0079] 3) Add water dropwise while dispersing. After the dropwise addition, continue to disperse at 20-40°C for 2-6 hours;

[0080] 4) The materials in the dispersing tank are transferred to a homogenizer for full homogenization to obtain a coating wear-resistant agent.

[0081] Preferably, the mass percentage of the reinforcing filler in the reinforcing filler solution in step 1) is 50%-90%.

[0082] Further preferably, the mass percentage of the reinforcin...

Embodiment 1

[0091] Dissolve 60g of methylphenyl silicone resin (weight average molecular weight = 5000, M / Q = 0.9) in 20g of toluene to obtain a methylphenyl silicone resin solution; ×10 6 mPa.s), 50g structural formula is MeO-(-C 3 h 6 O-) 6 -(-C 2 h 4 O-) 26 -(CH 2 ) 3 -SiMe 2 -O-(-SiMe 2 -O-) 18.5 -SiMe 2 -C 12 h 25 The ternary block polysiloxane, 120g NP-6, 90g15-S-30, 90g sodium lauryl sulfate, 60g methyl phenyl silicone resin solution are added to the dispersion kettle, heated to 80-100 °C, start high-speed After the disperser disperses at high speed for 2 hours, the material becomes uniform. Start the cold water circulation machine to reduce the temperature of the material in the kettle to between 35 and 40°C. Slowly add 150g of deionized water while maintaining the high-speed dispersion state, and the material changes from oil phase to water. Phase: keep at 35-40°C and continue to disperse at a high speed for 4 hours, then transfer the material to a homogenizer and h...

Embodiment 2

[0093] Dissolve 70g of methyl silicone resin (weight average molecular weight = 3000, M / Q = 0.8) in 28g of xylene to obtain methyl silicone resin solution; 6 mPa.s), 100g structural formula is MeO-(-C 3 h 6 O-) 18 -(-C 2 h 4 O-) 18 -(CH 2 ) 3 -SiMe 2 -O-(-SiMe 2 -O-) 39.6 -SiMe 2 -(CH 2 ) 3 -(-OC 2 h 4 -) 18 -(-OC 3 h 6 -) 18 -OMe ternary block polysiloxane, 35g sodium lauryl sulfate, 100g 3EO, 65g15-S-40, 70g methyl silicone resin solution into the dispersion kettle, heated to 90 ~ 110 ℃, start the high-speed disperser After 2.5 hours of high-speed dispersion, the materials are uniform. Start the cold water circulation machine to reduce the temperature of the materials in the kettle to 30-35°C. Slowly add 230g of deionized water while maintaining the high-speed dispersion state, and the materials will change from oil phase to water phase. ; After maintaining 30-35°C and continuing to disperse at a high speed for 6 hours, transfer the material to a homogeniz...

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Abstract

The invention discloses a coating wear-resistant agent and a preparation method and application thereof. The wear-resistant agent is prepared from ultra-high molecular weight polysiloxane, ternary-block polysiloxane, reinforce filler, organic solvent, compound emulsifier and water. The method includes the following steps of firstly, dissolving reinforce fibber in organic solvent to obtain a reinforce filler solution; secondly, adding ultra-high molecular weight polysiloxane, compound emulsifier and the reinforce filler solution into a dispersing kettle to be dispersed for 1-3 hours at a temperature of 80-120 DEG C, and decreasing the temperature to 20-40 DEG C after materials are evenly stirred; thirdly, dropwise adding water while dispersing, and continuing to conduct dispersion for 2-6 hours at a temperature of 20-40 DEG C after dropwise adding is completed; fourthly, transferring materials from the dispersing kettle into a homogenizer to be fully homogenized, and obtaining the coating wear-resistant agent. The coating wear-resistant agent is stable in performance, uniform in granularity, capable of being used for preparing coating, paint, ink, gloss oil, plastic and the like, high in system compatibility, and capable of providing excellent wear-resistant and scratch-resistant capacity and a smooth hand feeling.

Description

technical field [0001] The invention relates to a coating anti-wear agent and a preparation method and application thereof, belonging to the technical field of coatings. Background technique [0002] During the use of the coating film, it is unavoidable to be rubbed, especially in daily necessities, public facilities, roads and so on. Friction can easily lead to the wear of the coating film, making the coating film thinner and exposed, which not only affects the appearance, but also easily Lead to damage to the paint film and lose the protective and decorative effects on the substrate. Strong adhesion, high gloss, wear resistance and scratch resistance, increased slip and anti-blocking have always been the most important basic requirements for coating films. Anti-wear agent is an additive to improve the wear resistance of the coating film, improve the gloss and smoothness of the coating film, and is widely used in household appliance coatings, automotive coatings, furniture...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12
Inventor 余龙飞李欢玲郑小珊李莉
Owner INST OF CHEM ENG GUANGDONG ACAD OF SCI
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