Preparation method for recombining decoration material through gluing of waterborne isocyanates

A water-based isocyanate, reconstituted decorative material technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, manufacturing tools, etc., can solve problems to be improved, achieve significant ecological and social benefits, meet fashion needs, and bond firmly. Effect

Inactive Publication Date: 2016-03-23

DEHUA TB NEW DECORATION MATERIAL CO LTD

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AI-Extracted Technical Summary

Problems solved by technology

[0004] CN103878833A (2014-6-25) discloses a manufacturing method of recom...

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Method used

(1) rotary cut log, making thickness is the veneer of 0.5~0.7mm; The moisture content of veneer is controlled at 6-16%; Veneer passes through the natural defective position or veneer that veneer exists Different good parts are excavated and repaired, and concave holes are formed after excavation and repair. After pressure curing, the thickness of the veneer is in an unbalanced state in the part where the concave hole is located, and several veneers have different colors; the edge of the concave hole and The veneer bodies are transitioned through slopes. By setting the slope, the fit between the veneers is more uniform and natural; for excavation and repair, use a utility blade for excavation and repair or use an electric grinder for excavation and repair, and the electric grinder has a spherical sand head;

(1) rotary cut log, making thickness is the veneer of 0.7mm; The moisture content of veneer is controlled at 16%; veneer passes through the good position that veneer exists to the natural defective position of veneer or veneer is different Carry out excavation and repair. After excavation and repair, a concave hole is formed. After pressurization and maintenance, the thickness of the veneer is in an unbalanced state in the part where the concave hole is located, and several veneers have different colors; the edge of the concave hole and the veneer body transitions through slopes. By setting the slope, the fit between the veneers is more uniform and natural; for excavation and repair, use a utility blade for excavation and repair or use an electric grind...

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Abstract

The invention relates to a preparation method for recombining a decoration material through gluing of waterborne isocyanates, and belongs to the technical field of new decoration materials. The preparation method includes the following steps that (1) a log is rotationally cut, veneers with the thickness being 0.5-0.7 mm are manufactured; (2) the veneers are dried, whitened, dyed and dried again, so that primary sheets are obtained; (3) the primary sheets are glued and recombined, and a batten is obtained; and (4) the batten is subjected to cold pressing to form the recombined decoration material. In the step (3), a double-component waterborne polymer isocyanates (API) adhesive is used as the adhesive for gluing, the double-component waterborne isocyanates adhesive comprises a main agent and a curing agent which are compounded, and the main agent comprises, by weight, 100 parts of polyvinyl acetate emulsion, 0.01-0.1 part of an antifoaming agent, 10-13 parts of protective colloid, 0.05-0.5 part of a thickening agent and 5-8 parts of auxiliaries; the curing agent comprises isocyanates. According to the recombined decoration material, the formaldehyde emission is lower than 0.3 mg/L, gluebond strength is qualified, and color fastness to light reaches the level 4.

Application Domain

Non-macromolecular adhesive additivesPolyureas/polyurethane adhesives +1

Technology Topic

IsocyanateEmulsion +9

Examples

Experimental program(3)

Example Embodiment

[0029] Example one

[0030] The preparation method of water-based isocyanate glued recombinant decorative material includes the following steps:

[0031] (1) Rotary cut logs to make veneer veneer with a thickness of 0.5mm; the moisture content of the veneer is controlled at 6%; the veneer is repaired by digging and repairing the natural defects of the veneer or the different good parts of the veneer After digging and repairing, a concave hole is formed. After pressurization and curing, the thickness of the veneer is in an uneven state in the part where the concave hole is located. Several veneers have different colors; the edge of the concave hole and the veneer body pass through the slope transition. By setting the slope, the bonding between the veneers is more uniform and natural; the excavation and repair use art blades for excavation and repair or electric grinders for excavation and repair, which have a spherical sand head;

[0032] (2) Drying, bleaching, dyeing, and then drying the veneer veneer to obtain the primary board; cover the back of the primary board with a flexible reinforcing material with a thickness of 0.05mm; use hot pressing to bond, the pressure is 0.5Mpa, and the temperature 80℃, time is 50 seconds; improve the structure of the wire brush of the wire drawing roller to change the arrangement of soft and hard steel wires. The pitch of soft and hard steel wires is equivalent to that of hard broad-leaved wood and the distance between morning and evening wood, which is 5mm. Bond one or both ends of the primary board At both ends of the conveying liner, the conveying liner is 2mm plywood or MDF; select the wire brush of the drawing roller that matches the texture of the primary sheet, and the pitch of the soft and hard steel wires is the same for wire drawing; the surface of the primary sheet is sanded, Flushing, inspection, packaging;

[0033] (3) Sizing and reorganizing the primary board to obtain the wood square; the adhesive used in the sizing is a two-component water-based isocyanate adhesive; the two-component water-based isocyanate adhesive includes a compound main agent and a curing agent ; The main agent includes 100 parts by weight of polyvinyl acetate emulsion; 0.01 parts of defoamer; 10 parts of protective colloid; 0.05 parts of thickener; 8 parts of auxiliary agent;

[0034] The curing agent includes the following main components in parts by weight: 100 parts of polymethylene phenyl isocyanate (PAPI), 5 parts of solvent, 0.1 part of crosslinking agent; protective colloid is polyvinyl alcohol; auxiliary agent is layered nano bimetallic hydrogen Oxide; crosslinking agent is silane coupling agent KH550;

[0035] (4) Cold press the wood square to form a reorganized decorative material.

Example Embodiment

[0036] Example two

[0037] The preparation method of water-based isocyanate glued recombinant decorative material includes the following steps:

[0038] (1) Rotary cut logs to make thin wood veneer with a thickness of 0.7mm; the moisture content of the veneer is controlled at 16%; the veneer is repaired by digging and repairing the natural defects of the veneer or the different good parts of the veneer After digging and repairing, a concave hole is formed. After pressurizing and curing, the thickness of the veneer is in an uneven state where the concave hole is located. Several veneers have different colors; the edge of the concave hole and the veneer body pass through the slope transition. By setting the slope, the bonding between the veneers is more even and natural; the excavation and repair use art blades for excavation and repair or use electric grinders for excavation and repair, which has a spherical sand head;

[0039] (2) Drying, bleaching, dyeing, and then drying the veneer to obtain the primary board; cover the back of the primary board with a flexible reinforcement material with a thickness of 0.15mm; use hot pressing to bond, the pressure is 1.2Mpa, and the temperature 120℃, time is 180 seconds; improve the structure of the wire brush of the wire drawing roller to change the arrangement of the soft and hard steel wires. The pitch of the soft and hard steel wires is equal to the distance between the early and late timbers of hard broad-leaved timber, which is 50mm. Bond one or both ends of the primary plate At both ends of the conveying liner, the conveying liner is 5mm plywood or MDF; select a wire brush with a wire drawing roller that matches the texture of the primary sheet, and the pitch of the soft and hard steel wires is the same for wire drawing; the surface of the primary sheet is sanded, Flushing, inspection, packaging;

[0040] (3) Sizing and reorganizing the primary board to obtain the wood square; the adhesive used in the sizing is a two-component water-based isocyanate adhesive; the two-component water-based isocyanate adhesive includes a compound main agent and a curing agent ; The main agent includes 100 parts by weight of polyvinyl acetate emulsion; 0.1 part of defoamer; 13 parts of protective colloid; 0.5 part of thickener; 5 parts of auxiliary agent;

[0041] The curing agent includes the following main components in parts by weight: 100 parts of polymethylene phenyl isocyanate (PAPI), 10 parts of solvent, 1 part of crosslinking agent; protective colloid is polyvinyl alcohol; auxiliary agent is layered nano bimetallic hydrogen Oxide; Crosslinking agent is silane coupling agent KH550;

[0042] (4) Cold press the wood square to form a reorganized decorative material.

Example Embodiment

[0043] Example three

[0044] The preparation method of water-based isocyanate glued recombinant decorative material includes the following steps:

[0045] (1) Rotary cut logs to produce veneer with a thickness of 0.5-0.7mm; the moisture content of the veneer is controlled at 6-16%; the veneer is good for natural defects or different veneers. The parts are excavated and repaired, and a concave hole is formed after the excavation and repair. After the pressure curing, the thickness of the veneer is in an uneven state where the concave hole is located, and several veneers have different colors; the edge of the concave hole and the veneer body Transition through the slope between. By setting the slope, the bonding between the veneers is more uniform and natural; the excavation and repair use art blades for excavation and repair or use electric grinders for excavation and repair, which has a spherical sand head;

[0046] (2) Dry, bleach, dye, and then dry the veneer veneer to obtain a primary board; cover the back of the primary board with a flexible reinforcing material with a thickness of 0.1mm; use hot pressing to bond, the pressure is 0.9Mpa, and the temperature 110℃, time is 130 seconds; improve the structure of the wire brush of the drawing roller to make the soft and hard alternate arrangement, the pitch of the soft and hard steel wire is equal to the distance between the hard broad-leaved wood and the morning and late woods, which is 20mm. Bond one or both ends of the primary board At the two ends of the conveying liner, the conveying liner is 3mm plywood or MDF; select a wire brush with a wire drawing roller that matches the texture of the primary sheet, and the pitch of the soft and hard steel wires is the same for wire drawing; the surface of the primary sheet is sanded, Flushing, inspection, packaging;

[0047] (3) Sizing and reorganizing the primary board to obtain the wood square; the adhesive used in the sizing is a two-component water-based isocyanate adhesive; the two-component water-based isocyanate adhesive includes a compound main agent and a curing agent ; The main agent includes 100 parts by weight of polyvinyl acetate emulsion; 0.06 parts of defoamer; 11 parts of protective colloid; 0.4 parts of thickener; 7 parts of auxiliary agent; curing agent includes the following main components by weight: Duoya 100 parts of methyl phenyl isocyanate (PAPI), 7 parts of solvent, 0.6 part of cross-linking agent; protective colloid is polyvinyl alcohol; auxiliary agent is layered nano double hydroxide; cross-linking agent is silane coupling agent KH550;

[0048] (4) Cold press the wood square to form a reorganized decorative material.

[0049] The reorganized decorative material provided by the present invention has a formaldehyde emission of less than 0.3mg/L, qualified immersion and peeling, and has a light fastness level of 4; through the excavation and repair of different parts of the veneer, and the combination of different colored veneers , With the corresponding mold for production, the production method is simple, the cost is low, and the produced reorganized decorative veneer has a high degree of simulation, which can well simulate the texture and texture of natural precious wood, which is exactly like natural precious wood, but without knots , Dark spots and other natural defects;

[0050] This kind of brushed reorganized decorative veneer has a beautiful appearance, realistic texture imitating precious wood species, with the characteristics of natural wood materials, and no natural physical defects of wood; it not only meets people's modern decoration fashion needs, but also saves a lot of money The natural precious wood resources have significant ecological and social benefits. This product is widely used in the decoration of furniture, wooden doors and indoor background walls.

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PUM

Property	Measurement	Unit
Thickness	0.5 ~ 0.7	mm
tensile		MPa
Particle size		Pa
strength	10

Description & Claims & Application Information

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the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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Classification and recommendation of technical efficacy words

Strong bond

Preparation method for recombining decoration material through gluing of waterborne isocyanates

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Examples

Example Embodiment

Example Embodiment

Example Embodiment

PUM

Description & Claims & Application Information

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