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Composite wear-resistant waterborne polyurethane emulsion and preparation method thereof

A water-based polyurethane and polyurethane emulsion technology, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of cumbersome preparation process and high cost, and achieve the effects of wide application prospects, good adhesion and excellent wear resistance.

Pending Publication Date: 2022-04-15
DALIAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned preparation process is comparatively loaded down with trivial details, and cost is higher

Method used

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  • Composite wear-resistant waterborne polyurethane emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Step, prepared for calcium carbonate dispersion

[0021] The calcium carbonate was added to the reactor, and the deionized water was used to obtain a concentration of 5 mg / ml of calcium carbonate dispersion.

[0022] Step 2, prepared by composite wear-resistant polyurethane emulsion

[0023] The polyurethane emulsion of the solid content of 23 wt% is known, the polybutadiene latex and calcium carbonate dispersion are added to the reactor, and the strong stirring or ultrasonic dispersion is 20 min, and the aqueous dispersant, the antifoaming agent obtains a composite wear-resistant aqueous polyurethane emulsion. The composite wear-resistant polyurethane emulsion was cured after cure 2 wt% of the polyurethane resin, and the polybutiene rubber curing was 5% by weight of the polyurethane resin.

Embodiment 2

[0025] Step 1, the preparation of the quartz sand dispersion

[0026] It is weighed with quartz sand to the reactor to add deionized water ultrasound dispersion for 2 h to give a concentration of 10 mg / ml quartz sand dispersion.

[0027] Step 2, prepared by composite wear-resistant polyurethane emulsion

[0028] The polyurethane emulsion, the polyamide water dispersion, and the quartz sand dispersion of the solid content of 30% by weight, and the quartz sand dispersion are added to the reactor, and the strong stirring or ultrasonic dispersion is 30 min, and aqueous dispersant, emulsifier, and defoaming agent obtain composite wear resistance. Waterborne polyurethane emulsion; composite wear-resistant aqueous polyurethane emulsion, quartz sand, 3 wt% of the polyurethane resin, from 10% by weight of the polyurethane resin.

Embodiment 3

[0030] Step 1, the preparation of a disulfide dispersion liquid

[0031] It is weighed into the reactor to add deionized water ultrasonic dispersion for 2 h to obtain a concentration of 5 mg / ml of diomide dispersion.

[0032] Step 2, prepared by composite wear-resistant polyurethane emulsion

[0033] The polyurethane emulsion, butyrene latex and the diombdenum dispersion of the solid content of 25 wt% are referred to, respectively, and the aqueous dispersant is added to the reactor, and the aqueous dispersant is added to the reactor, and the aqueous dispersant is added to the reactor. Compound-resistant waterborne polyurethane emulsions were cured after cure 4 wt% of the polyurethane resin, butylene-yolfin-cured gas cured by the polyurethane resin, from 15% by weight of the polyurethane resin.

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Abstract

The invention relates to a composite wear-resistant waterborne polyurethane emulsion and a preparation method thereof, other components are added into the polyurethane emulsion to endow the polyurethane emulsion with wear resistance, the other components comprise an inorganic filler, latex, an auxiliary agent and deionized water, and the latex can be replaced by a polymer dispersion liquid; and the latex or polymer emulsion and the inorganic filler have a synergistic effect to improve the wear resistance. The prepared composite wear-resistant waterborne polyurethane emulsion has excellent wear resistance, aging resistance, scratch resistance, mechanical properties and the like, is good in adhesive force, and has wide application prospects in the fields of spinning, decoration, buildings, mines, traffic, ships, rope (mooring rope) or net coatings and the like.

Description

Technical field [0001] The present invention belongs to the technical field of aqueous functional coating, and it is directed to a composite wear-resistant aqueous polyurethane emulsion and a method of preparing a latex or polymer emulsion and an inorganic filler to improve the wear resistant aqueous polyurethane. Background technique [0002] Waterborne polyurethane (WPU) coating material, water-based solvent or dispersion medium, has a wide range of green environmental protection and excellent overall performance, has a wide range of applications in textiles, buildings, transportation, ships, and ropes (cables) or networks. In order to obtain an aqueous polyurethane coating material that satisfies the use of industrial use, the introduction of nanomaterials in aqueous polyurethane is effectively feasible, and the method can improve the wear resistance of the polyurethane material. [0003] Wang Jiangyu et al. Utilizes aminopropyltriethoxysilane (KH550) to molybdenum disulfide (...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/61C09D7/65
Inventor 朱秀玲章翌阳张靖松吴声龙
Owner DALIAN UNIV OF TECH