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Self-adhesive multilayer composite flexible decoration sheet preparation process

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 polymers, sheet surface cracks, aging, etc. , to achieve the effect of improving viscosity and hydrophobicity

Active Publication Date: 2020-01-24
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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  • Self-adhesive multilayer composite flexible decoration sheet preparation process
  • Self-adhesive multilayer composite flexible decoration sheet preparation process
  • Self-adhesive multilayer composite flexible decoration sheet preparation process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0027]

[0028] ②Weigh 21.4g of 2,4-dihydroxybenzophenone and 130mL of carbon tetrachloride and add them to the reactor, stir and mix, and raise the temperature to 55-60℃, then add 45.5g of the product A prepared in step ① to it, and heat up Stir the reac...

Embodiment 2

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

[0033] Step 1: Put the mineral powder into a muffle furnace at 280-300℃ and roast for 25-26h. After cooling to room temperature, add 1kg of mineral powder into 2L of 8% sodium hydroxide solution, stir and mix for 30-40min, then wash to 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 a certain ratio at the same time, and then heat to 75-80°C and reflux for 4h, then evaporate to remove After the solvent is cooled to 50-60°C, 12.5g of concentrated ammonia is added to the reaction vessel, and the reaction is refluxed for 12-14h, and then vacuum distillation is performed to obtain the modifier. The reaction structure is as follows:

[0035]

[0036] Step 3: Add 16 g of the modifier prepared in step 2 to 800 mL of ethanol solution and sti...

Embodiment 3

[0039] The specific preparation process of the colored flexible sheet is as follows: 100g of the NH prepared in Example 2 2 -BZ, 73g of the antioxidant acrylic polymer emulsion prepared in Example 1, 13g of water and 26g of dyeing slurry, the mass concentration of the direct dye in the dyeing slurry is 75%, and at the same time, add it to the reaction vessel and stir and mix for 1-2min, then add 11g of flexible agent was added and stirred and mixed for 2-3 minutes to obtain a slurry. After the addition of the anti-oxidant acrylic polymer emulsion, the mold was immediately controlled within 2 hours, and then the obtained slurry was poured into the mold for uniform coating and cured at 100°C 3-4h, then demoulding and drying to obtain a colored flexible sheet.

[0040] Comparative example 1:

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

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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 modified by inorganic materials such as slag and quartz sand, and then cross-linked and polymerized with acrylic polymer to prepare a flexible sheet. The invention patent with 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 and the aging resistance performance is better. , But because acrylic polymer is prone 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/24C09J7/30C09J7/40C09J163/00C09J11/08C08F216/00C08F220/14C08J5/18C08L29/12C08K9/06C08K3/00E04F13/075
CPCC08F216/00C08J5/18C08J2329/12C08K3/00C08K9/06C09J7/245C09J7/30C09J7/40C09J11/08C09J163/00C09J2301/122C09J2301/30C09J2301/41C09J2433/006C09J2463/00C09J2493/00E04F13/072C08L93/04C08F220/14
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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