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A kind of preparation technology of self-adhesive multi-layer composite flexible decorative sheet

A technology of composite flexibility and preparation process, applied in the direction of adhesive types, polymer adhesive additives, film/sheet adhesives, etc., can solve the problems of reducing acrylic polymer, easy aging, foaming, etc. To achieve the effect of improving viscosity and hydrophobicity

Active Publication Date: 2020-10-27
宁波金铠石新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The flexible sheet is prepared by modifying inorganic materials such as slag and quartz sand, and then cross-linked and polymerized with acrylic acid polymer to obtain a flexible sheet. The invention patent with the patent number CN103288405B discloses a flexible decorative sheet and its manufacturing method. The flexible sheet is prepared from blast furnace mineral powder, acrylic polymer emulsion, fiber, water repellent, pigment, and filler. By replacing the cement-based system with mineral powder, the amount of acrylic polymer used can be reduced, making it better in aging resistance , but because the acrylic polymer is easy to generate free radicals under the action of ultraviolet rays, it is easy to age, even if the amount of use is reduced, it is easy to cause aging, resulting in cracks and foaming on the surface of the sheet, and the existing flexible sheet In order to improve the decorative Performance, usually in the process of sheet material preparation, pigments are added to the material for dyeing, but the pigments are fixed on the sheet through cross-linking and curing of acrylic polymers. Under long-term wind and rain erosion, the pigments are easily washed away, resulting in flakes. The color of the material changes, affecting the appearance

Method used

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  • A kind of preparation technology of self-adhesive multi-layer composite flexible decorative sheet
  • A kind of preparation technology of self-adhesive multi-layer composite flexible decorative sheet
  • A kind of preparation technology of self-adhesive multi-layer composite flexible decorative sheet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The specific preparation process of the antioxidant acrylic acid polymer emulsion is as follows:

[0026] ① Add 11.2g (0.1mol) sorbic acid into 60mL ether solution, stir to dissolve, add 5.3g (0.12mol) acetaldehyde, then raise the temperature to 80-85°C, then add 6mL dropwise to it with a mass concentration of 4% sodium hydroxide solution, control the rate of addition to be 4-5mL / min, stir and reflux for 3-4h after the dropwise addition is complete, then dropwise add a hydrochloric acid solution with a mass concentration of 2% to the pH=1 of the solution, and then add Add 14.3g (1.2mol) of thionyl chloride, keep the temperature constant and reflux for 6-7h, then carry out vacuum distillation to obtain product A, the reaction structure is as follows;

[0027]

[0028] ② Weigh 21.4g of 2,4-dihydroxybenzophenone and 130mL of carbon tetrachloride into the reaction kettle, stir and mix, then raise the temperature to 55-60°C, then add 45.5g of the product A prepared in ste...

Embodiment 2

[0032] The specific preparation process of the flexible sheet is as follows:

[0033] Step 1: Add the ore powder to a muffle furnace at 280-300°C and roast for 25-26 hours. After lowering to room temperature, add 1 kg of ore powder to 2L of 8% sodium hydroxide solution and stir for 30-40 minutes, then wash until Dry after neutralization to obtain pre-activated mineral powder (Ac-BZ);

[0034] Step 2: Add 15.7g of dimethylaminoethyl methacrylate, 22.1g of coupling agent KH550 and 200mL of absolute ethanol into the reaction vessel at the same time according to a certain ratio, then raise the temperature to 75-80°C for reflux reaction for 4 hours, and then evaporate to remove The solvent therein was cooled down to 50-60°C, and then 12.5g of concentrated ammonia water was added to the reaction vessel, refluxed for 12-14h, and then subjected to vacuum distillation to obtain a modifier. The reaction structure was as follows:

[0035]

[0036] Step 3: Add 16g of the modifier prep...

Embodiment 3

[0039]The specific preparation process of the colored flexible sheet is as follows: the NH prepared in 100g embodiment 2 2 -BZ, the antioxidant acrylic polymer emulsion prepared by 73g embodiment 1, 13g water and 26g dyeing slurry, the mass concentration of direct dyestuff in the dyeing slurry is 75%, add in the reaction vessel and stir and mix 1-2min simultaneously, then to Add 11g of flexible agent and stir and mix for 2-3 minutes to obtain a slurry. After adding the anti-oxidation acrylic polymer emulsion, control it within 2 hours to make a mold immediately, then pour the obtained slurry into the mold to coat evenly, and cure at 100°C 3-4h, and then demolded and dried to obtain a colored flexible sheet.

[0040] Comparative example 1:

[0041] The specific preparation process of the colored flexible sheet is as follows: the NH prepared in 100g embodiment 2 2 -BZ, 73g (WA-103) water-based acrylic emulsion, 13g water and 26g dyeing slurry, the mass concentration of direct ...

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PUM

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Abstract

The invention discloses a self-adhesive multilayer composite flexible decoration sheet preparation process, which specially comprises: adding rosin into ethanol, carrying out stirring dissolving, adding an epoxy resin, carrying out a stirring reaction, adding a RFE adhesive, and stirring and mixing at a normal temperature for 20-30 min to obtain a hydrophobic flame-retardant adhesive; and uniformly coating the surface of a flexible sheet layer with the hydrophobic flame-retardant adhesive, adhering a layer of aluminum-foil paper to the surface of the adhesive, carrying out connection compounding on the aluminum-foil layer of the aluminum-foil paper and the hydrophobic bonding layer, and calendaring by a calendaring machine to obtain the self-adhesive multilayer composite flexible decoration sheet. According to the invention, the prepared anti-oxidation acrylic polymer emulsion contains a large amount of aldehyde groups, the NH2-BZ surface contains a large amount of amino groups, the degree of the cross-linking polymerization of the aldehyde groups and the amino groups is large, the bond energy of the formed -C=N- double bonds is high, and when NH2-BZ is subjected to cross-linking polymerization through the emulsion, the binding capacity between mineral powder ions is large and the bond energy is high, so that the tensile strength of the sheet is effectively improved.

Description

technical field [0001] The invention belongs to the field of flexible sheet preparation, and relates to a preparation process of a self-adhesive multilayer composite flexible decorative sheet. Background technique [0002] The flexible sheet is prepared by modifying inorganic materials such as slag and quartz sand, and then cross-linked and polymerized with acrylic acid polymer to obtain a flexible sheet. The invention patent with the patent number CN103288405B discloses a flexible decorative sheet and its manufacturing method. The flexible sheet is prepared from blast furnace mineral powder, acrylic polymer emulsion, fiber, water repellent, pigment, and filler. By replacing the cement-based system with mineral powder, the amount of acrylic polymer used can be reduced, making it better in aging resistance , but because the acrylic polymer is easy to generate free radicals under the action of ultraviolet rays, it is easy to age, even if the amount of use is reduced, it is eas...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J7/24C09J7/30C09J7/40C09J163/00C09J11/08C08F216/00C08F220/14C08J5/18C08L29/12C08K9/06C08K3/00E04F13/075
CPCC08F216/00C08J5/18C08J2329/12C08K3/00C08K9/06C09J11/08C09J163/00C09J2433/006C09J2463/00C09J2493/00C09J7/245C09J7/30C09J7/40C09J2301/122C09J2301/30C09J2301/41E04F13/072C08L93/04C08F220/14
Inventor 陈家珺张正
Owner 宁波金铠石新材料科技有限公司
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