CN113479010A - Light inorganic board veneer and processing technology thereof - Google Patents

Light inorganic board veneer and processing technology thereof Download PDF

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Publication number
CN113479010A
CN113479010A CN202110762587.XA CN202110762587A CN113479010A CN 113479010 A CN113479010 A CN 113479010A CN 202110762587 A CN202110762587 A CN 202110762587A CN 113479010 A CN113479010 A CN 113479010A
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inorganic board
light inorganic
glue
polyurethane
board
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Chinese (zh)
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刘中衡
杜嘉
俞斌
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Wuxi Tianxiang New Home Materials Co ltd
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Wuxi Tianxiang New Home Materials Co ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44C—PRODUCING DECORATIVE EFFECTS; MOSAICS; TARSIA WORK; PAPERHANGING
    • B44C5/00—Processes for producing special ornamental bodies
    • B44C5/04—Ornamental plaques, e.g. decorative panels, decorative veneers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/02—Layered products comprising a layer of paper or cardboard next to a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B29/00—Layered products comprising a layer of paper or cardboard
    • B32B29/06—Layered products comprising a layer of paper or cardboard specially treated, e.g. surfaced, parchmentised
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/10—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the pressing technique, e.g. using action of vacuum or fluid pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/12—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by using adhesives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/0012—Mechanical treatment, e.g. roughening, deforming, stretching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/162—Cleaning
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/16—Drying; Softening; Cleaning
    • B32B38/164—Drying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B7/00—Layered products characterised by the relation between layers; Layered products characterised by the relative orientation of features between layers, or by the relative values of a measurable parameter between layers, i.e. products comprising layers having different physical, chemical or physicochemical properties; Layered products characterised by the interconnection of layers
    • B32B7/04—Interconnection of layers
    • B32B7/12—Interconnection of layers using interposed adhesives or interposed materials with bonding properties
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/002—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising natural stone or artificial stone
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
    • B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
    • B32B9/06—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of paper or cardboard
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J161/00—Adhesives based on condensation polymers of aldehydes or ketones; Adhesives based on derivatives of such polymers
    • C09J161/20—Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H17/00—Non-fibrous material added to the pulp, characterised by its constitution; Paper-impregnating material characterised by its constitution
    • D21H17/20—Macromolecular organic compounds
    • D21H17/33—Synthetic macromolecular compounds
    • D21H17/46—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
    • D21H17/47—Condensation polymers of aldehydes or ketones
    • D21H17/49—Condensation polymers of aldehydes or ketones with compounds containing hydrogen bound to nitrogen
    • D21H17/51—Triazines, e.g. melamine
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/02—Composition of the impregnated, bonded or embedded layer
    • B32B2260/028—Paper layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2260/00—Layered product comprising an impregnated, embedded, or bonded layer wherein the layer comprises an impregnation, embedding, or binder material
    • B32B2260/04—Impregnation, embedding, or binder material
    • B32B2260/046—Synthetic resin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/30—Properties of the layers or laminate having particular thermal properties
    • B32B2307/306—Resistant to heat
    • B32B2307/3065—Flame resistant or retardant, fire resistant or retardant
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/718—Weight, e.g. weight per square meter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2307/00—Properties of the layers or laminate
    • B32B2307/70—Other properties
    • B32B2307/72—Density

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Ceramic Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Laminated Bodies (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)

Abstract

The invention provides a light inorganic board veneer and a processing technology thereof. The processing technology of the light inorganic board veneer comprises the following steps: 1) pretreating the light inorganic board; 2) coating low-molecular polyurethane glue on two surfaces of the pretreated light inorganic board; 3) coating the high molecular polyurethane glue on two sides of the light inorganic board coated with the low molecular polyurethane glue for the second time; 4) dipping printing base paper in melamine glue to obtain melamine dipped paper; 5) spreading melamine impregnated paper on a light inorganic board coated with the polymer polyurethane glue for the second time to obtain a light inorganic board blank; 6) and hot-pressing the light inorganic board blank to obtain the light inorganic board veneer. The processing technology of the light inorganic board veneer reduces the cost and the construction difficulty, has no pollution in construction, and can replace the existing organic veneer board and high-density inorganic veneer board.

Description

Light inorganic board veneer and processing technology thereof
Technical Field
The invention belongs to the technical field of decorative plates, and relates to a light inorganic plate veneer and a processing technology thereof.
Background
With the continuous development of the decorative plate industry, the pursuit of natural elements and beauty is improved, natural wood grains, stone grains, leather, textile and natural colors are favored by people, elements adopted by space design and matching tend to be more natural, and the space has more vitality and sense of reality. According to the national standard requirements, the fire-proof standard of the surface decorative plate of the commercial space and the public space must reach the A level, the water absorption and the expansion are not required, the corresponding requirements of the decorative surface material of the private space are improved, and the problems of fire-proof and waterproof indexes of the existing organic artificial board, the pressing and pasting process of the inorganic board, physical and chemical performance indexes, high density, construction pollution and the like cannot be solved. Therefore, there is a need to develop a lightweight inorganic board-faced decorative panel.
CN103821310A discloses a facing process for inorganic wood floor, which is to attach a layer of non-woven fabric on melamine impregnated paper on the surface of an inorganic board, so that a composite floor made of the inorganic board can be faced. According to the invention, the surface of the composite floor made of the inorganic board is adhered with the non-woven fabric layer, so that the facing treatment of the composite floor by the facing machine is facilitated, and the non-woven fabric is durable and easy to color, so that various patterns can be made, the color can be changed at will, the product quality is improved, and the sales volume is increased. However, the bonding force between the composite floor made of the inorganic board and the melamine impregnated paper is poor, so that the bonding performance is poor, the appearance of the prepared inorganic wood floor veneer is poor, and the service performance needs to be improved.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide a light inorganic board veneer and a processing technology thereof, which reduce the cost and construction difficulty, have no pollution in construction, and the prepared light inorganic board veneer has good flame retardant property, can replace the existing organic veneer board and high-density inorganic veneer board, and has the advantages of improving the space application range and the space environmental protection index.
In order to achieve the purpose, the invention adopts the following technical scheme:
one of the objects of the present invention is to provide a process for preparing a light inorganic board veneer, which comprises the following steps:
1) pretreating the light inorganic board;
2) coating low-molecular polyurethane glue on two sides of the light inorganic board pretreated in the step 1);
3) secondarily coating the high molecular polyurethane glue on two sides of the light inorganic board coated with the low molecular polyurethane glue in the step 2);
4) dipping printing base paper in melamine glue to obtain melamine dipped paper;
5) flatly paving the melamine impregnated paper obtained in the step 4) on the light inorganic board obtained in the step 3) after the secondary coating of the high molecular polyurethane glue to obtain a light inorganic board blank;
6) hot-pressing the light inorganic board blank obtained in the step 5) to obtain the light inorganic board veneer.
According to the processing technology of the light inorganic board veneer, the synergistic effect of the high-molecular polyurethane glue and the low-molecular polyurethane glue can ensure that the glue is uniformly coated without foaming and leaking, the bonding performance between the melamine impregnated paper and the light inorganic board is improved, the light inorganic board veneer prepared by the hot pressing technology has good flame retardant property and high fire-proof grade, can replace the existing organic veneer board and high-density inorganic veneer board, and has the advantages of improving the space application range and the space environmental protection index.
In the step 1), the pretreatment comprises the following steps: and sanding the light inorganic board by 180 meshes to polish six surfaces of the light inorganic board, and then performing dust removal cleaning and drying treatment.
Preferably, the light inorganic board has a density of less than 1000kg/m3The mineral substance is the finished artificial board of the main raw material. Wherein the mineral substance can be natural quartz and inorganic crystal whisker, and the weight ratio is 50-60%.
In the step 2), the low molecular weight polyurethane glue comprises 50-60% of polyurethane, 40-50% of amino resin, 0.05-0.2% of penetrating agent and 0.2-0.4% of curing agent according to weight percentage.
Preferably, the low molecular weight polyurethane glue consists of 55% of polyurethane, 45% of amino resin, 0.1% of penetrating agent and 0.3% of curing agent in percentage by weight.
Among them, the penetrant and curing agent according to the present invention are the types commonly used in the art.
The coating weight of the low molecular weight polyurethane glue is 35-40g/m2For example, a coating weight of 35g/m2、36g/m2、37g/m2、38g/m2、39g/m2Or 40g/m2And the like.
In the step 3), the high polymer polyurethane glue comprises, by weight, 20-40% of polyurethane, 60-80% of amino resin, 0.05-0.2% of penetrating agent and 0.2-0.4% of curing agent.
Preferably, the high molecular polyurethane glue consists of 30% of polyurethane, 70% of amino resin, 0.1% of penetrating agent and 0.3% of curing agent in percentage by weight.
The coating weight of the high-molecular polyurethane glue is 5-10g/m2E.g. a coating weight of 5g/m2、6g/m2、7g/m2、8g/m2、9g/m2Or 10g/m2And the like.
The use amounts of the high-molecular polyurethane glue and the low-molecular polyurethane glue need to be reasonably controlled, the optimal bonding effect cannot be achieved due to too little use amount, and too much glue which is redundant after hot pressing can pollute the plate and influence the appearance and use of the finished plate.
In the step 4), the melamine glue consists of 83% of triamine and formaldehyde, 4% of diethylene glycol, 0.5% of a release agent, 2% of a curing agent, 3.5% of a penetrating agent and 7% of water in a molar ratio of 1:1.9, wherein the release agent, the curing agent and the penetrating agent are common aids in the field.
The dosage of the melamine glue is 120-160g/m2For example in an amount of 120g/m2、130g/m2、140g/m2、150g/m2Or 160g/m2And the like.
In step 6), the hot pressing temperature is 145-160 ℃, for example, the hot pressing temperature is 145 ℃, 150 ℃, 155 ℃, 160 ℃ and the like; the hot pressing pressure is 12-16MPa, for example, the hot pressing pressure is 12MPa, 13MPa, 14MPa, 15MPa or 16MPa, etc.; the hot pressing time is 80-120s, for example, the hot pressing time is 80s, 90s, 100s, 110s, 120s and the like.
As a preferable embodiment of the present invention, the process for processing the light inorganic board veneer comprises the steps of:
1) sanding a light inorganic board by 180 meshes to polish six surfaces of the light inorganic board, and then performing dust removal cleaning and drying treatment;
2) coating low molecular weight polyurethane glue on two sides of the light inorganic board pretreated in the step 1), wherein the low molecular weight polyurethane glue consists of 55% of polyurethane, 45% of amino resin, 0.1% of penetrating agent and 0.3% of curing agent in percentage by weight, and the coating weight is 35-40g/m2；
3) For step 2), coating low molecular weightThe two sides of the light inorganic board of polyurethane glue are coated with high molecular polyurethane glue twice, wherein the high molecular polyurethane glue consists of 30 percent of polyurethane, 70 percent of amino resin, 0.1 percent of penetrating agent and 0.3 percent of curing agent according to weight percentage, and the coating weight is 5-10g/m2；
4) Dipping the printing base paper in melamine glue to obtain melamine dipped paper, wherein the dosage of the melamine glue is 120-160g/m2；
5) Flatly paving the melamine impregnated paper obtained in the step 4) on the light inorganic board obtained in the step 3) after the secondary coating of the high molecular polyurethane glue to obtain a light inorganic board blank;
6) hot-pressing the light inorganic board blank obtained in the step 5), wherein the hot-pressing conditions are as follows: the hot pressing temperature is 145-160 ℃, the hot pressing pressure is 12-16MPa, and the hot pressing time is 80-120s, so that the light inorganic board veneer is obtained.
The second purpose of the invention is to provide a light inorganic board facing obtained by the processing technology of the first purpose, which has good flame retardant property and high fire-proof grade and can replace the existing organic facing board and high-density inorganic facing board. The light inorganic board comprises a melamine impregnated paper layer, a high molecular polyester glue layer, a low molecular polyester glue layer, a light inorganic board, a low molecular polyester glue layer, a high molecular polyester glue layer and a melamine impregnated paper layer which are sequentially arranged from top to bottom, namely the upper surface and the lower surface of the light inorganic board are symmetrically provided with the melamine impregnated paper layer, the high molecular polyester glue layer and the low molecular polyester glue layer.
Compared with the prior art, the invention has the beneficial effects that:
the processing technology of the light inorganic board veneer reduces the cost and the construction difficulty, has no pollution during construction, and has good flame retardant property, wherein the flame retardant property is A grade, and the surface bonding strength between an inorganic light board and melamine impregnated paper is 1.1-1.2 MPa; can replace the existing organic veneer board and high-density inorganic veneer board, and has the advantages of improving the space application range and the space environmental protection index.
Drawings
Fig. 1 is a schematic structural view of a lightweight inorganic board veneer of the present invention;
the reference numbers are as follows:
1-a melamine impregnated paper layer; 2-high molecular polyester glue layer; 3-low molecular polyester glue layer; 4-light inorganic board.
Detailed Description
The technical solution of the present invention is further described by the following specific embodiments with reference to fig. 1.
Unless otherwise specified, various starting materials of the present invention are commercially available or prepared according to conventional methods in the art.
The structural schematic diagram of the light inorganic board veneer of the invention is shown in fig. 1, and the light inorganic board veneer comprises a melamine impregnated paper layer 1, a high molecular polyester glue water layer 2, a low molecular polyester glue water layer 3, a light inorganic board 4, a low molecular polyester glue water layer 3, a high molecular polyester glue water layer 2 and a melamine impregnated paper layer 1 which are arranged in sequence from top to bottom.
Example 1
The processing technology of the light inorganic board facing of the embodiment comprises the following steps:
1) sanding a light inorganic board by 180 meshes to polish six surfaces of the board, and then performing dust removal cleaning and drying treatment, wherein the drying temperature is 110 ℃, and the drying time is 2 min;
2) coating low molecular weight polyurethane glue on two sides of the light inorganic board pretreated in the step 1), wherein the low molecular weight polyurethane glue consists of 55% of polyurethane, 45% of amino resin, 0.1% of penetrating agent and 0.3% of curing agent in percentage by weight, and the coating weight is 40g/m2；
3) Coating the high molecular polyurethane glue on two sides of the light inorganic board coated with the low molecular polyurethane glue in the step 2) for the second time, wherein the high molecular polyurethane glue consists of 30 percent of polyurethane, 70 percent of amino resin, 0.1 percent of penetrating agent and 0.3 percent of curing agent according to weight percentage, and the coating weight is 10g/m2；
4) Dipping the printing base paper in melamine glue to obtain melamine dippingThe melamine glue consists of 83 percent of triamine and formaldehyde, 4 percent of diethylene glycol, 0.5 percent of release agent, 2 percent of curing agent, 3.5 percent of penetrating agent and 7 percent of water according to the molar ratio of 1:1.9, and the dosage of the melamine glue is 150g/m2；
5) Flatly paving the melamine impregnated paper obtained in the step 4) on the light inorganic board obtained in the step 3) after the secondary coating of the high molecular polyurethane glue to obtain a light inorganic board blank;
6) hot-pressing the light inorganic board blank obtained in the step 5), wherein the hot-pressing conditions are as follows: and the hot pressing temperature is 150 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 100s, so that the light inorganic board veneer is obtained.
Example 2
The processing technology of the light inorganic board facing of the embodiment comprises the following steps:
1) sanding a light inorganic board by 180 meshes to polish six surfaces of the board, and then performing dust removal cleaning and drying treatment, wherein the drying temperature is 110 ℃, and the drying time is 2 min;
2) coating low molecular weight polyurethane glue on two sides of the light inorganic board pretreated in the step 1), wherein the low molecular weight polyurethane glue consists of 55% of polyurethane, 45% of amino resin, 0.1% of penetrating agent and 0.3% of curing agent in percentage by weight, and the coating weight is 35g/m2；
3) Coating the high molecular polyurethane glue on two sides of the light inorganic board coated with the low molecular polyurethane glue in the step 2) for the second time, wherein the high molecular polyurethane glue consists of 30 percent of polyurethane, 70 percent of amino resin, 0.1 percent of penetrating agent and 0.3 percent of curing agent according to weight percentage, and the coating weight is 8g/m2；
4) Dipping printing base paper into melamine glue to obtain melamine dipped paper, wherein the melamine glue consists of triamine and formaldehyde 83% in a molar ratio of 1:1.9, diethylene glycol 4%, a release agent 0.5%, a curing agent 2%, a penetrating agent 3.5% and water 7%, and the using amount is 140g/m2；
5) Flatly paving the melamine impregnated paper obtained in the step 4) on the light inorganic board obtained in the step 3) after the secondary coating of the high molecular polyurethane glue to obtain a light inorganic board blank;
6) hot-pressing the light inorganic board blank obtained in the step 5), wherein the hot-pressing conditions are as follows: the hot pressing temperature is 160 ℃, the hot pressing pressure is 12MPa, and the hot pressing time is 90s, so that the light inorganic board veneer is obtained.
Example 3
The processing technology of the light inorganic board facing of the embodiment comprises the following steps:
1) sanding a light inorganic board by 180 meshes to polish six surfaces of the board, and then performing dust removal cleaning and drying treatment, wherein the drying temperature is 110 ℃, and the drying time is 2 min;
2) coating low molecular weight polyurethane glue on two sides of the light inorganic board pretreated in the step 1), wherein the low molecular weight polyurethane glue consists of 55% of polyurethane, 45% of amino resin, 0.1% of penetrating agent and 0.3% of curing agent in percentage by weight, and the coating weight is 40g/m2；
3) Coating the high molecular polyurethane glue on two sides of the light inorganic board coated with the low molecular polyurethane glue in the step 2) for the second time, wherein the high molecular polyurethane glue consists of 30 percent of polyurethane, 70 percent of amino resin, 0.1 percent of penetrating agent and 0.3 percent of curing agent according to weight percentage, and the coating weight is 10g/m2；
4) Dipping printing base paper into melamine glue to obtain melamine dipped paper, wherein the melamine glue consists of triamine and formaldehyde 83% in a molar ratio of 1:1.9, diethylene glycol 4%, a release agent 0.5%, a curing agent 2%, a penetrating agent 3.5% and water 7%, and the using amount is 150g/m2；
5) Flatly paving the melamine impregnated paper obtained in the step 4) on the light inorganic board obtained in the step 3) after the secondary coating of the high molecular polyurethane glue to obtain a light inorganic board blank;
6) hot-pressing the light inorganic board blank obtained in the step 5), wherein the hot-pressing conditions are as follows: the hot pressing temperature is 145 ℃, the hot pressing pressure is 16MPa, and the hot pressing time is 120s, so that the light inorganic board veneer is obtained.
Example 4
The processing technology of the light inorganic board facing of the embodiment comprises the following steps:
1) sanding a light inorganic board by 180 meshes to polish six surfaces of the board, and then performing dust removal cleaning and drying treatment, wherein the drying temperature is 110 ℃, and the drying time is 2 min;
2) coating low molecular weight polyurethane glue on two sides of the light inorganic board pretreated in the step 1), wherein the low molecular weight polyurethane glue consists of 55% of polyurethane, 45% of amino resin, 0.1% of penetrating agent and 0.3% of curing agent in percentage by weight, and the coating weight is 38g/m2；
3) Coating the high molecular polyurethane glue on two sides of the light inorganic board coated with the low molecular polyurethane glue in the step 2) for the second time, wherein the high molecular polyurethane glue consists of 30 percent of polyurethane, 70 percent of amino resin, 0.1 percent of penetrating agent and 0.3 percent of curing agent according to weight percentage, and the coating weight is 6g/m2；
4) Dipping printing base paper into melamine glue to obtain melamine dipped paper, wherein the melamine glue consists of triamine and formaldehyde 83% in a molar ratio of 1:1.9, diethylene glycol 4%, a release agent 0.5%, a curing agent 2%, a penetrating agent 3.5% and water 7%, and the using amount of the melamine glue is 120g/m2；
5) Flatly paving the melamine impregnated paper obtained in the step 4) on the light inorganic board obtained in the step 3) after the secondary coating of the high molecular polyurethane glue to obtain a light inorganic board blank;
6) hot-pressing the light inorganic board blank obtained in the step 5), wherein the hot-pressing conditions are as follows: and the hot pressing temperature is 150 ℃, the hot pressing pressure is 15MPa, and the hot pressing time is 100s, so that the light inorganic board veneer is obtained.
Example 5
This example is different from example 1 in that the amount of the low molecular weight polyurethane glue applied was 20g/m2The rest is the same as in example 1.
Example 6
This example is different from example 1 in that the coating amount of the low molecular weight polyurethane glue is 60g/m2The rest is the same as in example 1.
Example 7
This example is different from example 1 in that the amount of the polymer urethane glue applied was 2g/m2The rest is the same as in example 1.
Example 8
This example is different from example 1 in that the amount of the polymer urethane glue applied was 25g/m2The rest is the same as in example 1.
Example 9
This example differs from example 1 in that the hot pressing conditions were: the hot pressing temperature was 100 ℃, the hot pressing pressure was 5MPa, and the hot pressing time was 200s, all other things being the same as those of example 1.
Comparative example 1
This comparative example is different from example 1 in that only low molecular weight polyurethane glue was coated, and high molecular weight polyurethane glue was not coated, and the others were the same as example 1.
Comparative example 2
This comparative example is different from example 1 in that only the polymer urethane glue is coated, and the low molecular urethane glue is not coated, and the others are the same as those of example 1.
Comparative example 3
The comparative example is different from the example 1 in that the glue is a common commercially available liquid glue water-based environment-friendly composite glue with the model ZBL-E108, and the rest is the same as the example 1.
The polyurethane used in the above examples and comparative examples of the present invention is Lubrizol/5716 polyurethane resin, the amino resin is hexamethylol melamine hexa methyl ether, the penetrant is sodium dodecyl benzene sulfonate, the curing agent is 6875, and the release agent in the melamine glue is the release agent 601.
The sheets obtained in examples 1 to 9 and comparative examples 1 to 3 were subjected to the performance test, and the test results are shown in Table 1. The test standard of the bonding performance between the inorganic light board and the melamine impregnated paper is carried out according to the GB/T15102-2017 standard; the test standard for the flame retardant properties of the panels is carried out with reference to the standard GB 8624-2012.
TABLE 1
Figure BDA0003150511560000101
As can be seen from Table 1, the lightweight inorganic board veneers prepared by the examples 1-4 of the invention have good flame retardant property, wherein the flame retardant property is A grade, and the surface bonding strength between the inorganic lightweight board and the melamine impregnated paper is 1.1-1.2 MPa; can replace the existing organic veneer board and high-density inorganic veneer board, and has the advantages of improving the space application range and the space environmental protection index.
Example 5 the low molecular weight polyurethane glue applied in too low a level will result in a reduction in surface bond strength.
Example 6 the low molecular weight polyurethane glue is coated too much, which can cause contamination of the board edges and the finished board surface.
Example 7 the coating amount of the polymer urethane glue is too low, which causes the surface bonding strength to be lowered.
Example 8 too high a coating weight of the polymer polyurethane glue can cause contamination of board edges, finished board surfaces and equipment.
Example 9 the hot pressing conditions changed, the finished board surface effect became worse, and the surface bonding strength decreased.
Comparative example 1 only the low molecular weight polyurethane glue was applied, which resulted in no bonding of the impregnated paper to the inorganic board.
Comparative example 2 only the high molecular weight polyurethane glue was applied, the impregnated paper did not bond to the inorganic board.
Comparative example 3 using a commercially available ordinary liquid glue, the impregnated paper was not bonded to the inorganic board.
The present invention is illustrated by the above-mentioned examples, but the present invention is not limited to the above-mentioned detailed process equipment and process flow, i.e. it is not meant to imply that the present invention must rely on the above-mentioned detailed process equipment and process flow to be practiced. It should be understood by those skilled in the art that any modification of the present invention, equivalent substitutions of the raw materials of the product of the present invention, addition of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.
The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (10)

1. The processing technology of the light inorganic board veneer is characterized by comprising the following steps:
1) pretreating the light inorganic board;
2) coating low-molecular polyurethane glue on two sides of the light inorganic board pretreated in the step 1);
3) secondarily coating the high molecular polyurethane glue on two sides of the light inorganic board coated with the low molecular polyurethane glue in the step 2);
4) dipping printing base paper in melamine glue to obtain melamine dipped paper;
5) flatly paving the melamine impregnated paper obtained in the step 4) on the light inorganic board obtained in the step 3) after the secondary coating of the high molecular polyurethane glue to obtain a light inorganic board blank;
6) hot-pressing the light inorganic board blank obtained in the step 5) to obtain the light inorganic board veneer.
2. The process according to claim 1, wherein in step 1), the pretreatment is: sanding a light inorganic board by 180 meshes to polish six surfaces of the light inorganic board, and then performing dust removal cleaning and drying treatment;
preferably, the light inorganic board has a density of less than 1000kg/m3The mineral substance is the finished artificial board of the main raw material.
3. The process according to claim 1 or 2, wherein in step 2), the low molecular weight polyurethane glue comprises 50-60% polyurethane, 40-50% amino resin, 0.05-0.2% penetrant and 0.2-0.4% curing agent by weight percentage;
preferably, the low molecular weight polyurethane glue consists of 55% of polyurethane, 45% of amino resin, 0.1% of penetrating agent and 0.3% of curing agent in percentage by weight.
4. Process according to one of claims 1 to 3, characterized in that the low molecular weight polyurethane glue is applied in a quantity of 35 to 40g/m2。
5. The process according to any one of claims 1 to 4, wherein in step 3), the polymeric polyurethane glue comprises, in weight percent, 20 to 40% polyurethane, 60 to 80% amino resin, 0.05 to 0.2% penetrant and 0.2 to 0.4% curing agent;
preferably, the high molecular polyurethane glue consists of 30% of polyurethane, 70% of amino resin, 0.1% of penetrating agent and 0.3% of curing agent in percentage by weight.
6. The process according to claim 1 to 5, wherein the amount of the polyurethane polymer glue is 5 to 10g/m2。
7. The process according to one of claims 1 to 6, characterized in that in step 4) the melamine glue consists of 83% triamine to formaldehyde, 4% diethylene glycol, 0.5% mold release agent, 2% curing agent, 3.5% penetrant and 7% water in a molar ratio of 1: 1.9.
8. The process according to any one of claims 1 to 7, wherein the amount of melamine glue is 120-160g/m2。
9. The process according to any one of claims 1 to 8, wherein in step 6), the hot pressing temperature is 145-160 ℃, the hot pressing pressure is 12-16MPa, and the hot pressing time is 80-120 s.
10. A lightweight inorganic board veneer obtained by the process of any one of claims 1 to 9.
CN202110762587.XA 2021-07-06 2021-07-06 Light inorganic board veneer and processing technology thereof Pending CN113479010A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001030280A (en) * 1999-07-22 2001-02-06 Sumitomo Bakelite Co Ltd Manufacture of melamine resin decorative plate
CN102991086A (en) * 2012-09-12 2013-03-27 浙江帝龙新材料股份有限公司 Manufacturing process for glass-magnesium decorative plate
CN107779154A (en) * 2017-10-30 2018-03-09 广东圣帕新材料股份有限公司 A kind of preparation and application of PET flexible copper-clad plates polyester adhesive
CN112094617A (en) * 2020-11-19 2020-12-18 佛山市南海区瑞森新型材料研究所 Polyurethane adhesive, composite material prepared from polyurethane adhesive and application of composite material
CN112980336A (en) * 2021-02-25 2021-06-18 南通高盟新材料有限公司 Nitrogen-phosphorus synergistic flame-retardant waterborne polyurethane adhesive and preparation method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001030280A (en) * 1999-07-22 2001-02-06 Sumitomo Bakelite Co Ltd Manufacture of melamine resin decorative plate
CN102991086A (en) * 2012-09-12 2013-03-27 浙江帝龙新材料股份有限公司 Manufacturing process for glass-magnesium decorative plate
CN107779154A (en) * 2017-10-30 2018-03-09 广东圣帕新材料股份有限公司 A kind of preparation and application of PET flexible copper-clad plates polyester adhesive
CN112094617A (en) * 2020-11-19 2020-12-18 佛山市南海区瑞森新型材料研究所 Polyurethane adhesive, composite material prepared from polyurethane adhesive and application of composite material
CN112980336A (en) * 2021-02-25 2021-06-18 南通高盟新材料有限公司 Nitrogen-phosphorus synergistic flame-retardant waterborne polyurethane adhesive and preparation method thereof

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