CN-118441507-B - Corrosion-resistant impregnated gum liquid film paper and preparation method thereof

Abstract

The invention relates to the technical field of impregnated paper, in particular to corrosion-resistant impregnated glue liquid film paper and a preparation method thereof. The impregnated glue film paper comprises printing paper, wherein a protective glue film layer is coated on the outer surface of the printing paper, the protective glue film layer is prepared from the following raw materials, by weight, 80-90 parts of polyurethane emulsion, 12-18 parts of epoxy acrylic resin, 5-9 parts of PVDF emulsion, 10-18 parts of modified nano filler, 2-5 parts of silane coupling agent, 4-7 parts of hydroxyethyl cellulose, 2-4 parts of film forming auxiliary agent, 0.1-0.3 part of defoaming agent and 20-35 parts of water. The preparation method of the corrosion-resistant impregnated glue liquid film paper has the advantages of simple process, convenient operation and control and convenient industrialized production.

Inventors

• LI YING

Assignees

• 广东福美新材料科技有限公司

Dates

Publication Date

20260512

Application Date

20240531

Claims (7)

1. 1. The preparation method of the corrosion-resistant impregnated gum liquid film paper is characterized by comprising the following steps: S1, mixing 80-90 parts of polyurethane emulsion, 12-18 parts of epoxy acrylic resin, 5-9 parts of PVDF emulsion, 10-18 parts of modified nano filler, 2-5 parts of silane coupling agent and 20-35 parts of water according to parts by weight, heating and continuously stirring, reacting for 30-60min at a reaction temperature of 65-72 ℃, and obtaining a mixture I after reaction; s2, adding 4-7 parts of hydroxyethyl cellulose, 2-4 parts of film forming auxiliary agent and 0.1-0.3 part of defoamer into the mixture I, uniformly stirring, and cooling to obtain dipping glue solution; S3, placing the printing paper into dipping glue solution, performing complete dipping, wherein the dipping glue amount is 120-180g/m 2 , and then drying to obtain corrosion-resistant dipping glue liquid film paper; In the step S1, the preparation method of the modified nano filler comprises the steps of taking 50-70 parts of dimethyl sulfoxide and 5-10 parts of methanol, uniformly mixing, adding 6-10 parts of nano kaolin powder and 4-8 parts of nano zinc oxide to form a suspension, stirring the suspension at 62-70 ℃ for 2-3 hours, dispersing for 3-4 hours by adopting ultrasonic waves, carrying out suction filtration, drying, and grinding and crushing to obtain the modified nano filler.
2. 2. The method of producing a corrosion resistant impregnated gum film paper as defined in claim 1, wherein in step S1, the silane coupling agent is at least one of vinyltrimethoxysilane, vinyltriethoxysilane, gamma-glycidoxypropyl trimethoxysilane, and gamma- (methacryloyloxy) propyl trimethoxysilane.
3. 3. The method of claim 1, wherein in step S2, the defoaming agent is at least one of an organosilicon defoaming agent, a polyether defoaming agent and a phosphate defoaming agent.
4. 4. The method of claim 1, wherein in step S2, the film forming additive is at least one of ethylene glycol tertiary butyl ether, dipropylene glycol methyl ether and dipropylene glycol butyl ether.
5. 5. The method for preparing the corrosion-resistant impregnated gum film paper according to claim 1, wherein in the step S2, hydroxyethyl cellulose, a film forming additive and a defoaming agent are added into the mixture I, and then the mixture is stirred for 20-40min and cooled to 30-35 ℃ to obtain the impregnated gum.
6. 6. The method of claim 1, wherein in step S3, the drying temperature is 105-115 ℃ and the drying time is 3-5min.
7. 7. The corrosion-resistant impregnated glue liquid film paper is characterized by comprising printing paper, wherein the outer surface of the printing paper is coated with a protective glue film layer, and the protective glue film layer is prepared by adopting an impregnated glue solution; the corrosion-resistant impregnated gum liquid film paper is prepared by the method of claim 1.

Description

Corrosion-resistant impregnated gum liquid film paper and preparation method thereof Technical Field The invention relates to the technical field of impregnated paper, in particular to corrosion-resistant impregnated glue liquid film paper and a preparation method thereof. Background The impregnated paper is prepared by impregnating base paper printed with characters or patterns in an impregnating glue solution, drying, and forming a layer of protective glue film on the surface of the base paper to protect the base paper, so that the durability, decorative performance and adhesive force of paper sheets are improved, and the impregnated paper is conveniently applied to veneers of products such as cabinets, garderlets and reinforced composite floors. However, the existing impregnated paper is impregnated by melamine impregnating glue solution, and the prepared impregnated paper has excellent performance, but is easy to release formaldehyde in the use process, so that the life of people is adversely affected. Therefore, the environmental protection and the non-hydroformylation of impregnated paper have become the trend of the future. However, the existing melamine impregnation often has poor properties such as corrosion resistance, water vapor resistance and adhesion, and the application thereof is limited. Disclosure of Invention In order to overcome the defects and shortcomings in the prior art, the invention aims to provide the corrosion-resistant impregnated gum liquid film paper and the preparation method thereof, wherein the impregnated gum liquid film paper has the advantages of good corrosion resistance, water vapor resistance and surface crack resistance, long service life and environmental friendliness, and the preparation method of the corrosion-resistant impregnated gum liquid film paper is simple in process, convenient to control and convenient for industrial production. The corrosion-resistant impregnated glue liquid film paper comprises printing paper, wherein a protective glue film layer is coated on the outer surface of the printing paper, the protective glue film layer is prepared from the following raw materials, by weight, 80-90 parts of polyurethane emulsion, 12-18 parts of epoxy acrylic resin, 5-9 parts of PVDF emulsion, 10-18 parts of modified nano filler, 2-5 parts of silane coupling agent, 4-7 parts of hydroxyethyl cellulose, 2-4 parts of film forming auxiliary agent, 0.1-0.3 part of defoaming agent and 20-35 parts of water. The invention provides a preparation method of corrosion-resistant impregnated gum liquid film paper, which comprises the following steps: S1, mixing 80-90 parts of polyurethane emulsion, 12-18 parts of epoxy acrylic resin, 5-9 parts of PVDF emulsion, 9-17 parts of modified nano filler, 2-5 parts of silane coupling agent and 20-35 parts of water according to parts by weight, heating and continuously stirring, and reacting to obtain a mixture I; s2, adding 4-7 parts of hydroxyethyl cellulose, 2-4 parts of film forming auxiliary agent and 0.1-0.3 part of defoamer into the mixture I, uniformly stirring, and cooling to obtain dipping glue solution; S3, dipping the printing paper in dipping glue solution, and then drying to obtain the corrosion-resistant dipping glue liquid film paper. The invention prepares the dipping glue solution by compounding raw materials such as polyurethane emulsion, epoxy acrylic resin, modified nano filler, hydroxyethyl cellulose, silane coupling agent and the like and optimizing the proportion. The impregnated glue liquid film paper prepared by the impregnated glue liquid has better corrosion resistance, steam resistance and surface crack resistance, and has good adhesive force with the artificial decorative plate. Further, in the step S1, the silane coupling agent is at least one of vinyltrimethoxysilane, vinyltriethoxysilane, γ -glycidoxypropyl trimethoxysilane, and γ - (methacryloyloxy) propyl trimethoxysilane. Further, in the step S1, the preparation method of the modified nano filler comprises the steps of taking 50-70 parts of dimethyl sulfoxide and 5-10 parts of methanol, uniformly mixing, adding 6-10 parts of nano kaolin powder and 4-8 parts of nano zinc oxide to form a suspension, stirring at 62-70 ℃ for 2-3 hours, dispersing for 3-4 hours by ultrasonic waves, carrying out suction filtration, drying, grinding and crushing to obtain the modified nano filler. The particle size of the nano kaolin powder is 60-100nm, and the particle size of the nano zinc oxide is 50-80nm. According to the invention, the nano kaolin powder and the nano zinc oxide are modified in advance in the mode, and then are mixed with the raw materials such as polyurethane emulsion, PVDF emulsion and the like, so that the finally obtained protective adhesive film layer has the reinforcing and toughening effects, and the heat resistance of the protective adhesive film layer is improved. Further, in the step S1, the reaction temperature is 65-72 ℃ and the reaction ti