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Wear-resistant aqueous digital printing primer with high color fastness and preparation method therefor

A digital printing and color fastness technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve the problems of incompatibility of wear-resistant additives with water-based emulsions, short wear resistance, etc., to improve leveling performance and Drying ability, good substrate adhesion, the effect of improving wear resistance

Inactive Publication Date: 2020-02-21
HAINAN BNK WATER BASED NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current water-based polyurethane products or adhesives urgently need to be improved in terms of pigment wear resistance and color fastness.
At the same time, water-based primers also have shortcomings in wear resistance compared with traditional solvent-based primers. Generally, related wear-resistant additives cannot be well compatible with water-based emulsions, and traditional wear-resistant modification methods cannot meet the requirements. At this stage, the demand for high wear resistance of water-based primer requires related technical improvement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A wear-resistant water-based digital printing primer with high color fastness. The primer is composed of component A and component B according to the mass ratio of 10:1, and the solid content is 10%; component A is according to the weight ratio of the following raw materials Composition: 1 part of modified silica and modified graphene mixture, 1 part of emulsifier, 5 parts of polyurethane resin, 0.1 part of defoamer, 75 parts of soft water, wherein the ratio of modified silica to modified graphene is 1:1. The modified silica is nano-scale fumed silica; the particle size of the modified graphene is less than 10nm; the emulsifier is a mixture of fatty alcohol polyoxyethylene ether, oleylamine polyoxyethylene ether, and sodium lauryl sulfate; Polyurethane resin is prepared by organic polyisocyanate and oligomeric polyol as main components; organic polyisocyanate is a mixture of TDI, MDI, and PAPI; oligomeric polyol is low molecular weight polyvinyl alcohol, ethylene glycol...

Embodiment 2

[0039] A wear-resistant water-based digital printing primer with high color fastness. The primer is composed of component A and component B in a mass ratio of 10:1, with a solid content of 15%; component A is based on the weight ratio of the following raw materials Composition: 5 parts of modified silica and modified graphene mixture, 5 parts of emulsifier, 10 parts of polyurethane resin, 0.5 part of defoamer, 90 parts of soft water, wherein the ratio of modified silica to modified graphene is 1:1. The modified silica is nano-scale fumed silica; the particle size of the modified graphene is less than 10nm; the emulsifier is oleylamine polyoxyethylene ether; the polyurethane resin is prepared by organic polyisocyanate and oligomeric polyol as the main components; The organic polyisocyanate is PAPI; the oligomeric polyol is ethylene glycol; the defoamer is an organic high-carbon alcohol fatty acid ester compound. Component B is composed according to the weight ratio of the foll...

Embodiment 3

[0050] A wear-resistant water-based digital printing primer with high color fastness. The primer is composed of component A and component B in a mass ratio of 10:1, with a solid content of 13%; component A is based on the weight ratio of the following raw materials Composition: 3 parts of modified silica and modified graphene mixture, 2 parts of emulsifier, 7 parts of polyurethane resin, 0.3 part of defoamer, 82 parts of soft water, wherein the ratio of modified silica to modified graphene is 1:1. The modified silica is nano-scale fumed silica; the particle size of the modified graphene is less than 10nm; the emulsifier is sodium lauryl sulfate; the polyurethane resin is prepared by using organic polyisocyanate and oligomeric polyol as the main components; The organic polyisocyanate is TDI; the oligomeric polyol is glycerin; the defoamer is aminosilane. Component B is composed according to the weight ratio of the following raw materials: 4 parts of crosslinking compound, 10 p...

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Abstract

The invention discloses a wear-resistant aqueous digital printing primer with high color fastness and a preparation method therefor. The primer is prepared from a component A and a component B which are in a mass ratio of 10: 1 and has the solid content of 10% to 15%, wherein the component A is prepared from the following raw materials in parts by weight: 1-5 parts of mixture of modified white carbon black and modified graphene, 1-5 parts of emulsifier, 5-10 parts of polyurethane resin, 0.1-0.5 part of antifoamer and 75-90 parts of softened water, wherein a ratio of the modified white carbon black to the modified graphene is 1: 1; the component B is prepared from the following raw materials in parts by weight: 1-5 parts of cross-linked compound, 8-12 parts of curing agent, 69-76 parts of isopropanol and 14-16 parts of softened water; during storage, the two components are placed separately under the conditions of low temperature, shading and sealing; and during use, the two componentsare mixed uniformly. The primer disclosed by the invention has good printing performance and excellent color fastness, and meanwhile, the wear resistance of the primer can be improved. Due to a complete aqueous formula, the primer is environmentally friendly and pollution-free. In addition, the primer further has good product adaptability.

Description

technical field [0001] The invention relates to a water-based primer and a preparation method thereof, in particular to a wear-resistant water-based digital printing primer with high color fastness and a preparation method thereof. Background technique [0002] Digital printing primer or polyurethane water-based digital printing primer is currently the most widely used water-based coating, and it is gradually replacing traditional solvent-based primers and adhesives in the fields of printing, printing and dyeing. Compared with traditional solvent-based primers, It has excellent environmental friendliness, so the market prospect is immeasurable. [0003] However, the current water-based polyurethane products or adhesives urgently need to be improved in terms of pigment wear resistance and color fastness. At the same time, water-based primers also have shortcomings in wear resistance compared with traditional solvent-based primers. Generally, related wear-resistant additives ...

Claims

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Application Information

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IPC IPC(8): C09D175/04C09D7/63C09D7/62C09D7/20
CPCC08K2201/011C08K2201/014C09D175/04C09D7/20C09D7/62C09D7/63C09D7/70C08K13/06C08K7/26C08K3/042C08K5/14
Inventor 朱清梅符誉龄陈烜袁业兴吴坤斌陈新生
Owner HAINAN BNK WATER BASED NEW MATERIAL CO LTD