CN103265921A - High-gloss anti-crack adhesive for multilayer plywood and method for manufacturing multilayer plywood - Google Patents
High-gloss anti-crack adhesive for multilayer plywood and method for manufacturing multilayer plywood Download PDFInfo
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- CN103265921A CN103265921A CN2012105906899A CN201210590689A CN103265921A CN 103265921 A CN103265921 A CN 103265921A CN 2012105906899 A CN2012105906899 A CN 2012105906899A CN 201210590689 A CN201210590689 A CN 201210590689A CN 103265921 A CN103265921 A CN 103265921A
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Abstract
A high-gloss anti-crack adhesive for multilayer plywood is provided. The multilayer plywood is mutually glued and laminated by a single layer material. The adhesive includes a urea-formaldehyde resin adhesive and additive and added additives therein, a melamine resin adhesive and added additives therein. The preparation methods of the urea-formaldehyde resin adhesive and the melamine resin adhesive are creatively improved by inventors. The free formaldehyde in the obtained adhesive is less than 0.1%. Operation is easy, equipment is easy to get, no pollution generates, implementation is easy and price is inexpensive. The high-gloss anti-crack adhesive can be used for the multi-layer plywood, has excellent pre-pressing property, can mold at room temperature in 30-40 min, and has bonding strength >= 1.0 MPa, formaldehyde emission <= 1.0 mg/L, which is below requirements of GB/T18580-2001 E1 level, and gloss >= 85 DEG. In the environment with sudden changes in temperature, the high-gloss anti-crack adhesive has the advantages of preventing wear-resistant material cracking and bubbling as a result of thermal expansion and cool contraction.
Description
Technical field
The invention belongs to decorative materials technology, be specifically related to a kind of high gloss cracking resistance tackiness agent for multiplying plywood.
Background technology
Continuous progress along with China's science and technology, present decorative paper industry prosperity, be rooted in the hearts of the people for the idea of wood with paper, thereby with finishing paper and wood-based plate as the market of the various decorative boards of starting material process for processing also in continuous expansion, decorative board is the surface that finishing paper directly is attached to wood-based plate, they are contacted closely, for solving the problem of its surface gloss, generally can be again in its external coating one deck finish coat varnish or brushing and glossy paper materials similar after the finishing paper stickup is finished, make its surface keep smooth, but in actual production, reduced the production efficiency of facing plate, and the cost of conventional finish coat varnish is higher, also increased the production cost of facing plate on the whole, can't realize producing in batches, moreover along with furniture and ground board industry continuous development, the human consumer is also more and more higher to the requirement of facing plate smooth surface degree, only rely on finish coat varnish to promote the requirement that facing plate smooth degree can not satisfy the user gradually, and because the quality of finish coat varnish is different on the market, the smooth degree on dependence finish coat varnish lifting facing plate surface simply also causes the slickness disunity of different batches product easily.
The multiplying plywood of prior art is with three layers, five layers or more multi-layered veneer, make its fiber direction orthogonal, stick with glue that the agent layering is bondd, pressing and the multi-layered board made, this multiplying plywood can comprise bamboo wood and partly or entirely substitute timber, also can comprise forest zone residuum or outcast timber scrap stock, therefore the bamboo that effectively utilizes waste and use growth and breeding has positive effect to avoiding the wasting of resources.But the production of multiplying plywood is at pressure 1.0-1.2MPa, compacting forms in the time of temperature 120-140 ℃, to the requirement of bond paper than higher, bond paper for the compacting multiplying plywood, impregnation resin content is than common furniture paper bond paper height, be specially impregnation resin content 145-155%, volatile content 5.0-6.0%, Procuring degree ﹥ 45%.Fit with glue between each level of prior art multiplying plywood and Blockboard, easily layering in hot pressing, strain cracking, and also the luminance brightness on facing plate surface is not high, can not satisfy market to the needs of the bright facing plate of height.
Summary of the invention
For overcoming the easy layering of prior art multiplying plywood, defective that luminance brightness is not high, the invention provides a kind of high gloss cracking resistance tackiness agent for multiplying plywood, make it to reach Gao Guang behind the bond paper paste that impregnation forms, the compound MULTILAYER COMPOSITE plywood hot-pressing that makes is stablized adhesive strength height, high brightness, in use its angularity, deformation rate are minimum, occur cracking hardly.And the production cost of reduction decorative sheet, the mass consumption of minimizing forest tree resource, the favourable development of preserving the ecological environment.
For solving the technical problem of above-mentioned manufacturing process, the present invention adopts following scheme step:
For realizing that the present invention will take following technical scheme:
The high gloss cracking resistance tackiness agent that is used for multiplying plywood, multiplying plywood is gluing superimposed mutually by monolayer material, described tackiness agent comprises urea-formaldehyde resin adhesive and adds its interior auxiliary agent, trimeric cyanamide resin glue and add auxiliary agent in it, it is characterized in that urea-formaldehyde resin adhesive made by following preparation method: in the disposable adding reactor of formaldehyde, be 6.5 ~ 10.5 with the sodium hydroxide adjust pH behind the heat temperature raising, add for the first time urea, add-on is 2/3 of urea gross weight, temperature of reaction is warming up to 88 ℃ and be incubated 30 minutes, with volume ratio 1:1 formic acid adjust pH between 4.0-4.2, reaction reaches 1:2.0 ~ 2.5 than number and o'clock is 5.0 ~ 9.0 and is cooled to 60 ℃ with the sodium hydroxide adjust pH to water-soluble, added remaining 1/3 urea insulation reaction 30 minutes, cooling also adds water, the add-on of water is 9.23% of gross weight, temperature obtains urea-formaldehyde resin adhesive when being down to 35-40 ℃, the total consumption of urea and formaldehyde mole ratio are 1:1.2, and the pH value of urea-formaldehyde resin adhesive is 6.5-6.8, viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:2.3-2.7/20 ℃;
Described trimeric cyanamide resin glue is made by following preparation method: add formaldehyde in the reactor, water and properties-correcting agent, the product of the production model XL-021 of Linan, described properties-correcting agent Hangzhou Dien chemical industry company limited, be 7.0 ~ 11.0 with the sodium hydroxide adjust pH, when being warming up to 35 ℃, add trimeric cyanamide and hexanolactam and continue and heat up, insulation when being heated to 90 ℃, when being cooled to 35～40 ℃ 2.0～2.5 the time, resin water Combination in the still gets the trimeric cyanamide resin glue, wherein the add-on of hexanolactam is the 3.4-3.7% of trimeric cyanamide weight, the mol ratio of trimeric cyanamide and formaldehyde is 1:1.7, and the pH value of trimeric cyanamide resin glue is 8.0～8.5, and viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:1.4 ~ 1.6/20 ℃.
The urea-formaldehyde resin adhesive auxiliary agent can adopt this area to use the urea-formaldehyde resin adhesive auxiliary agent always, as ammonium chloride, urotropine, polyacrylamide, polyvinyl alcohol, Sodium dodecylbenzene sulfonate, sodium lauryl sulphate, benzalkonium chloride, ammonium chloride, ammonium sulfate etc., the contriver finds that following auxiliary agent can make urea-formaldehyde resin adhesive of the present invention be able to better performance; The urea-formaldehyde resin adhesive auxiliary agent comprises permeate agent, remover and solidifying agent, and described auxiliary agent adds weight in the urea-formaldehyde resin adhesive gross weight, and permeate agent is 0.2%, remover is 0.2%, and solidifying agent is 0.2%; Described permeate agent is the WT320 that Guangzhou pleased star business corporation produces, and described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, and described solidifying agent is the CT0012 that the Dongguan gloomy chemical materials of sky company limited produces.
Described trimeric cyanamide resin glue needs to add auxiliary agent before use such as fragrant or halo type organic acid anhydride class solidifying agent, Resins, epoxy or resol releasing agent, or Sulfonates permeate agent, or vinylbenzene, vinyl cyanide or esters of acrylic acid brightener, anti-fissuring agent can be polypropylene fibre, glass fibre, lignin fibre etc.; But the contriver finds to add following auxiliary agent before the trimeric cyanamide resin glue that reaction obtains uses, can obtain obvious effects, the auxiliary agent of described trimeric cyanamide resin glue comprises permeate agent, remover, anti-fissuring agent and solidifying agent, the adding weight of described auxiliary agent is in trimeric cyanamide resin glue base-material glue gross weight: permeate agent is 0.2%, remover is 0.2%, solidifying agent is 0.2%, and anti-fissuring agent is 0.2%-7%; Described permeate agent is the WT320 that Guangzhou pleased star business corporation produces, described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, described solidifying agent is the HS-710 that finishing material company limited of the big nation of Dongguan City produces, the XL-011 that Linan, described anti-fissuring agent Hangzhou Dien chemical industry company limited produces.
The present invention also provides a kind of preparation method of multiplying plywood, it is characterized in that may further comprise the steps:
(1) preparation adhesive base:
Described tackiness agent comprises urea-formaldehyde resin adhesive and adds its interior auxiliary agent, trimeric cyanamide resin glue and add auxiliary agent in it, urea-formaldehyde resin adhesive is made by following preparation method: in the disposable adding reactor of formaldehyde, be 6.5 ~ 10.5 with the sodium hydroxide adjust pH behind the heat temperature raising, add for the first time urea, add-on is 2/3 of urea gross weight, temperature of reaction is warming up to 88 ℃ and be incubated 30 minutes, with volume ratio 1:1 formic acid adjust pH between 4.0-4.2, reaction reaches 1:2.0 ~ 2.5 than number and o'clock is 5.0 ~ 9.0 and is cooled to 60 ℃ with the sodium hydroxide adjust pH to water-soluble, added remaining 1/3 urea insulation reaction 30 minutes, cooling also adds water, the add-on of water is 9.23% of gross weight, temperature obtains urea-formaldehyde resin adhesive when being down to 35-40 ℃, the total consumption of urea and formaldehyde mole ratio are 1:1.2, and the pH value of urea-formaldehyde resin adhesive is 6.5-6.8, viscosity is 14-15s/B
4.20 ℃, urea-formaldehyde resin adhesive and water than number 1:2.3-2.7/20 ℃;
Described trimeric cyanamide resin glue is made by following preparation method: add formaldehyde in the reactor, the XL-021 that water and Linan, Hangzhou Dien chemical industry company limited produce, be 7.0 ~ 11.0 with the sodium hydroxide adjust pH, when being warming up to 35 ℃, add trimeric cyanamide and hexanolactam and continue and heat up, insulation when being heated to 90 ℃, when being cooled to 35～40 ℃ 2.0～2.5 the time, resin water Combination in the still gets the trimeric cyanamide resin glue, wherein the add-on of hexanolactam is the 3.4-3.7% of trimeric cyanamide weight, the mol ratio of trimeric cyanamide and formaldehyde is 1:1.7, the pH value of trimeric cyanamide resin glue is 8.0～8.5, and viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:1.4 ~ 1.6/20 ℃;
(2) configuration urea-formaldehyde resin adhesive and trimeric cyanamide resin glue tamanori: to the auxiliary agent of above-mentioned urea-formaldehyde resin adhesive and trimeric cyanamide resin glue adding formula ratio.
The urea-formaldehyde resin adhesive auxiliary agent comprises permeate agent, remover and solidifying agent, and described auxiliary agent adds weight in the urea-formaldehyde resin adhesive gross weight, and permeate agent is 0.2%, remover is 0.2%, and solidifying agent is 0.2%; Described permeate agent is the WT320 that Guangzhou pleased star business corporation produces, and described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, and described solidifying agent is the CT0012 that the Dongguan gloomy chemical materials of sky company limited produces;
Before using, the trimeric cyanamide resin glue that reaction obtains adds auxiliary agent, the auxiliary agent of described trimeric cyanamide resin glue comprises permeate agent, remover, anti-fissuring agent and solidifying agent, the adding weight of described auxiliary agent is in trimeric cyanamide resin glue base-material glue gross weight: permeate agent is 0.2%, remover is 0.2%, solidifying agent is 0.2%, and anti-fissuring agent is 0.2%-7%; Described permeate agent is the WT320 that Guangzhou pleased star business corporation produces, described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, described solidifying agent is the HS-710 that finishing material company limited of the big nation of Dongguan City produces, the XL-011 that Linan, described anti-fissuring agent Hangzhou Dien chemical industry company limited produces;
(3) impregnation: adopt impregnation twice, impregnation urea-formaldehyde resin adhesive dipping decorative paper is soaked into paper in the urea-formaldehyde resin adhesive for the first time, soaks and solidifies 8 minutes, and the weight of dipping back decorative paper is 120% before the gluing;
Impregnation adopts trimeric cyanamide resin glue surface coated for the second time, adds auxiliary agent XL-011 in the trimeric cyanamide resin glue, and add-on is 0.3% of trimeric cyanamide resin glue gross weight, obtains gum dipped paper;
(4) assembly: above-mentioned gum dipped paper wood grain faced up to be placed on the plywood facing, again glued board just face melamine impregnated paper positive overlap stack after, level is put into thermocompressor;
(5) hot pressing: quick make thermocompressor, Control of Hot Press Control pressure are at 10～20kpa, and starting temperature is 40～50 ℃, and temperature is raised to 100～150 ℃ in 10～20 minutes, are incubated after 20～50 minutes, are cooled to 40～50 ℃ gradually, and the thermocompressor release is opened and got final product.
The tackiness agent that is used for multiplying plywood compared to existing technology, the present invention reduces itself and the mol ratio of formaldehyde, the content of reduction free formaldehyde.The XL-021 that the present invention uses Linan, Hangzhou Dien chemical industry company limited to produce, this product is provided by Linan, Hangzhou Dien chemical industry company limited, can improve the plasticity of tackiness agent, inhibition property, and can increase the sharpness of brightness and glued board, obviously reduced the consumption of glycol ether in hexanolactam and the existing tackiness agent, manufacturing process surface bond paper of the present invention and backing material plate are bonding firmly, through evidence surface bonding strength height, luminance brightness is good, even if the glued membrane ply of paper that makes in the environment of temperature shock, can better prevent the high-abrasive material that causes owing to expanding with heat and contract with cold and ftracture, bubbling.
Embodiment
Be described further below in conjunction with the technical solution of the present invention of embodiment:
Described viscosity measurement is adopted and is coated with four glasss of viscometers measurements, 20 ± 0.1 ℃ of temperature, humidity 50 ± 5RH.
Described luminance brightness is measured and is adopted Grossmeters MG268-F2 to measure, and sample surfaces is smooth.
Described surface bonding intensity adopts the GB/T18102-2000 standard.
Embodiment 1
The preparation urea-formaldehyde resin adhesive
In the disposable adding reactor of formaldehyde, be 6.5 ~ 7.5 with the sodium hydroxide adjust pH behind the heat temperature raising, add for the first time urea 475kg, temperature of reaction is warming up to 88 ℃ and be incubated 30 minutes, with volume ratio 1:1 formic acid adjust pH between 4.0-4.2, reaction reaches 1:2.0 ~ 2.5 o'clock than number and (water-solublely shows the water Combination than numerical table to water-soluble, specifically see GB/T14074.6-1993,) be 5.0 ~ 9.0 and be cooled to 60 ℃ with the sodium hydroxide adjust pH, add and add 225kg for the second time, insulation reaction 30 minutes, cooling also adds 400kg, temperature obtains urea-formaldehyde resin adhesive when being down to 35-40 ℃, the total consumption of urea and formaldehyde mole ratio are 1:1.2, and the pH value of urea-formaldehyde resin adhesive is 6.5-6.8, viscosity is 14-15s/B4.20 ℃, resin and water than number 1:2.3-2.7/20 ℃ (ester shows the water Combination with the ratio numerical table of water, specifically sees GB/T14074.6-1993)
The urea-formaldehyde resin adhesive auxiliary agent comprises permeate agent, remover and solidifying agent, and described auxiliary agent adds weight in the urea-formaldehyde resin adhesive gross weight, and permeate agent is 0.2%, remover is 0.2%, solidifying agent is 0.2%; Permeate agent is that WT-320(is available from the pleased star in Guangzhou business corporation), remover is PAT-523/W (available from finishing material company limited of the big nation of Dongguan City) and solidifying agent CT-0012 (buying from the Dongguan gloomy chemical materials of sky company limited).
(2) preparation trimeric cyanamide resin glue:
Add formaldehyde 820kg in the reactor, water 460kg, XL-021(is available from Linan, Hangzhou Dien chemical industry company limited) 100kg is 7.0 ~ 11.0 with the sodium hydroxide adjust pH, when being warming up to 35 ℃, add 750kg and hexanolactam 25kg, and continue to heat up, insulation when being heated to 90 ℃ gets the trimeric cyanamide resin glue when resin water Combination in the still is cooled to 35～40 ℃ 2.0～2.5 the time, (the water Combination is measured and is seen GB/T14074.6-1993)
The pH value of gained trimeric cyanamide resin glue is 8.0～8.5, and viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:1.4 ~ 1.6/20 ℃ (be water Combination than number, measuring method is seen GB/T14074.6-1993).
The auxiliary agent of described trimeric cyanamide resin glue comprises permeate agent, remover and solidifying agent, the adding weight of described auxiliary agent is in trimeric cyanamide resin glue base-material glue gross weight: permeate agent is 0.2%, remover is 0.2%, solidifying agent is 0.12%, and the anti-fissuring agent XL-011 that Dien chemical industry company limited in Linan, Hangzhou produces is 0.2-2.7%; Permeate agent is that WT-320(is available from the pleased star in Guangzhou business corporation), remover is that PAT-523/W (available from finishing material company limited of the big nation of Dongguan City) and solidifying agent are that HS-710(is available from finishing material company limited of the big nation of Dongguan City) anti-fissuring agent XL-011(available from Linan, Hangzhou Dien chemical industry company limited).
Use the cementing agent of present embodiment 1 and make multiplying plywood:
Be laminboard layer with the solid wood bar, during its upper and lower surface symmetry superposes successively/high density fiberboard is that light surface layer is constituted on trimeric cyanamide graining paper, the trimeric cyanamide by interlayer and two layers of surface finish coat, concrete preparation may further comprise the steps:
(1) impregnation: impregnation for the first time, use the Precondensed UreaFormaldehyde Resin dipping decorative paper; Secondary dipping used for surface applying trimeric cyanamide resin glue adds auxiliary agent XL-011.
(2) assembly: the gum dipped paper wood grain that will soak melamine resin faces up and is placed on the multiplying plywood face, again steel plate just facing melamine impregnated paper positive overlap stack after, level is put into thermocompressor.
(3) hot pressing: quick make thermocompressor, this Control of Hot Press Control pressure are at 10～20kpa, and starting temperature is 40～50 ℃, and temperature is raised to 100～150 ℃ in 10～20 minutes, are incubated after 20～50 minutes, are cooled to 40～50 ℃ gradually, and the thermocompressor release is opened and got final product;
Embodiment 2
The preparation urea-formaldehyde resin adhesive
The high gloss cracking resistance tackiness agent that is used for multiplying plywood, multiplying plywood is gluing superimposed mutually by monolayer material, and described tackiness agent comprises urea-formaldehyde resin adhesive and adds auxiliary agent, the trimeric cyanamide resin glue in it and add its interior auxiliary agent.
Urea-formaldehyde resin adhesive is made by following preparation method: in the disposable adding reactor of formaldehyde, be 8.5 ~ 10.5 with the sodium hydroxide adjust pH behind the heat temperature raising, add for the first time urea, add-on is 2/3 of urea gross weight, temperature of reaction is warming up to 88 ℃ and be incubated 30 minutes, with volume ratio 1:1 formic acid adjust pH between 4.0-4.2, reaction reaches 1:2.0 ~ 2.5 than number and o'clock is 5.0 ~ 6.0 and is cooled to 60 ℃ with the sodium hydroxide adjust pH to water-soluble, added remaining 1/3 urea insulation reaction 30 minutes, cooling also adds water, the add-on of water is 9.23% of gross weight, temperature obtains urea-formaldehyde resin adhesive when being down to 35-40 ℃, the total consumption of urea and formaldehyde mole ratio are 1:1.2, and the pH value of urea-formaldehyde resin adhesive is 6.5-6.8, viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:2.5/20 ℃;
The urea-formaldehyde resin adhesive auxiliary agent comprises permeate agent, remover and solidifying agent, and described auxiliary agent adds weight in the urea-formaldehyde resin adhesive gross weight, and permeate agent is 0.2%, remover is 0.2%, solidifying agent is 0.2%; Permeate agent is that WT-320(is available from the pleased star in Guangzhou business corporation), remover is PAT-523/W (available from finishing material company limited of the big nation of Dongguan City) and solidifying agent CT-0012 (buying from the Dongguan gloomy chemical materials of sky company limited).
(2) preparation trimeric cyanamide resin glue:
Described trimeric cyanamide resin glue is made by following preparation method: add formaldehyde in the reactor, the XL-021 that water and Linan, Hangzhou Dien chemical industry company limited produce, be 10.0 ~ 11.0 with the sodium hydroxide adjust pH, when being warming up to 35 ℃, add trimeric cyanamide and hexanolactam and continue and heat up, insulation when being heated to 90 ℃, when being cooled to 35～40 ℃ 2.4 the time, resin water Combination in the still gets the trimeric cyanamide resin glue, wherein the add-on of hexanolactam is 3.5% of trimeric cyanamide weight, the mol ratio of trimeric cyanamide and formaldehyde is 1:1.7, the pH value of trimeric cyanamide resin glue is 8.2, and viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:1.5/20 ℃.
The pH value of gained trimeric cyanamide resin glue is 8.2, and viscosity is 14.5s/B
4.20 ℃, resin and water than number 1:1.520 ℃ (be water Combination than number, measuring method is seen GB/T14074.6-1993).
The auxiliary agent of described trimeric cyanamide resin glue comprises permeate agent, remover and solidifying agent, the adding weight of described auxiliary agent is in trimeric cyanamide resin glue base-material glue gross weight: permeate agent is 0.2%, remover is 0.2%, solidifying agent is 0.12%, and the anti-fissuring agent XL-011 that Dien chemical industry company limited in Linan, Hangzhou produces is 2%; Permeate agent is that WT-320(is available from the pleased star in Guangzhou business corporation), remover is that PAT-523/W (available from finishing material company limited of the big nation of Dongguan City) and solidifying agent are that HS-710(is available from finishing material company limited of the big nation of Dongguan City) anti-fissuring agent XL-011(available from Linan, Hangzhou Dien chemical industry company limited).
Embodiment 3
The high gloss cracking resistance tackiness agent that is used for multiplying plywood, multiplying plywood is gluing superimposed mutually by monolayer material.
Described tackiness agent comprises urea-formaldehyde resin adhesive and adds auxiliary agent, the trimeric cyanamide resin glue in it and add its interior auxiliary agent.
Urea-formaldehyde resin adhesive is made by following preparation method: in the disposable adding reactor of formaldehyde, be 8.8 with the sodium hydroxide adjust pH behind the heat temperature raising, add for the first time urea, add-on is 2/3 of urea gross weight, temperature of reaction is warming up to 88 ℃ and be incubated 30 minutes, with volume ratio 1:1 formic acid adjust pH between 4.0-4.2, reaction is 6.0 and is cooled to 60 ℃ with the sodium hydroxide adjust pH when reaching 1:2.3 than number to water-soluble, added remaining 1/3 urea insulation reaction 30 minutes, cooling also adds water, the add-on of water is 9.23% of gross weight, temperature obtains urea-formaldehyde resin adhesive when being down to 35-40 ℃, the total consumption of urea and formaldehyde mole ratio are 1:1.2, and the pH value of urea-formaldehyde resin adhesive is 6.7, viscosity is 14.5s/B
4.20 ℃, resin and water than number 1:2.6/20 ℃;
Add auxiliary agent during use, present embodiment urea-formaldehyde resin adhesive auxiliary agent is made according to Chinese invention patent application CN201110225987.3 (open day is 2012.01.18).
Described trimeric cyanamide resin glue is made by following preparation method: add formaldehyde in the reactor, the XL-021 that water and Linan, Hangzhou Dien chemical industry company limited produce, be 7.0 ~ 11.0 with the sodium hydroxide adjust pH, when being warming up to 35 ℃, add trimeric cyanamide and hexanolactam and continue and heat up, insulation when being heated to 90 ℃, when being cooled to 35～40 ℃ 2.0～2.5 the time, resin water Combination in the still gets the trimeric cyanamide resin glue, wherein the add-on of hexanolactam is the 3.4-3.7% of trimeric cyanamide weight, the mol ratio of trimeric cyanamide and formaldehyde is 1:1.7, the pH value of trimeric cyanamide resin glue is 8.0～8.5, and viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:1.4 ~ 1.6/20 ℃.
Before using, the trimeric cyanamide resin glue that reaction obtains adds auxiliary agent, the auxiliary agent of described trimeric cyanamide resin glue.Permeate agent is alkyl sodium sulfonate, and remover is that silicone, anti-fissuring agent are lignin fibre, and solidifying agent is that magnesium oxide, ferric sulfate and methylimidazole are by weight the mixture of 1:1:0.2.
Embodiment 4
The high gloss cracking resistance tackiness agent that is used for multiplying plywood, multiplying plywood is gluing superimposed mutually by monolayer material, and described tackiness agent comprises urea-formaldehyde resin adhesive and adds auxiliary agent, the trimeric cyanamide resin glue in it and add its interior auxiliary agent.
Urea-formaldehyde resin adhesive is made by following preparation method: in the disposable adding reactor of formaldehyde, be 9 with the sodium hydroxide adjust pH behind the heat temperature raising, add for the first time urea, add-on is 2/3 of urea gross weight, temperature of reaction is warming up to 88 ℃ and be incubated 30 minutes, with volume ratio 1:1 formic acid adjust pH between 4.0-4.2, reaction is 6.0 and is cooled to 60 ℃ with the sodium hydroxide adjust pH when reaching 1:2.5 than number to water-soluble, added remaining 1/3 urea insulation reaction 30 minutes, cooling also adds water, the add-on of water is 9.23% of gross weight, temperature obtains urea-formaldehyde resin adhesive when being down to 35-40 ℃, the total consumption of urea and formaldehyde mole ratio are 1:1.2, and the pH value of urea-formaldehyde resin adhesive is 6.5-6.8, viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:2.7/20 ℃;
The urea-formaldehyde resin adhesive auxiliary agent comprises permeate agent, remover and solidifying agent, and described auxiliary agent adds weight in the urea-formaldehyde resin adhesive gross weight, and permeate agent is 0.2%, remover is 0.2%, and solidifying agent is 0.2%; Described permeate agent is the WT320 that Guangzhou pleased star business corporation produces, and described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, and described solidifying agent is the CT0012 that the Dongguan gloomy chemical materials of sky company limited produces.
Described trimeric cyanamide resin glue is made by following preparation method: add formaldehyde in the reactor, the XL-021 that water and Linan, Hangzhou Dien chemical industry company limited produce, be 10.0 with the sodium hydroxide adjust pH, when being warming up to 35 ℃, add trimeric cyanamide and hexanolactam and continue and heat up, insulation when being heated to 90 ℃, when being cooled to 40 ℃ 2.5 the time, resin water Combination in the still gets the trimeric cyanamide resin glue, wherein the add-on of hexanolactam is 3.6% of trimeric cyanamide weight, the mol ratio of trimeric cyanamide and formaldehyde is 1:1.7, the pH value of trimeric cyanamide resin glue is 8.0, and viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:1.4 ~ 1.6/20 ℃.
Before using, the trimeric cyanamide resin glue adds auxiliary agent, the auxiliary agent of described trimeric cyanamide resin glue comprises permeate agent, remover, anti-fissuring agent and solidifying agent, the adding weight of described auxiliary agent is in trimeric cyanamide resin glue base-material glue gross weight: permeate agent is 0.2%, remover is 0.2%, solidifying agent is 0.2%, and anti-fissuring agent is 0.5%; Permeate agent is the WT320 that Guangzhou pleased star business corporation produces, described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, described solidifying agent is the HS-710 that finishing material company limited of the big nation of Dongguan City produces, and described anti-fissuring agent is the XL-011 that Linan, Hangzhou Dien chemical industry company limited produces.
The test example
The cementing agent of getting embodiment 1-4 is applied to make multiplying plywood, and step is carried out the products measure luminance brightness that obtains, bonding strength, surperficial crack resistance energy and formaldehyde content according to the step of making the multiplying plywood facing among the embodiment 1.
The cracking resistance agent is surperficial crack resistance energy, and measuring method is seen 4.30 surperficial crack resistances energy and 4.31 surperficial cold-resistant thermal circulation performances among the GB/T17657-1999.Glossiness is measured practical Grossmeters MG6-F1, at first with power supply opening, adjusts with inspection panel, then the glossiness instrument is placed on the plate face that overlays, any position all can, observed reading 〉=85 °.Surface gummed strength detection method is seen GB/T18102-2000.Multi-ply wood surface free formaldehyde content is measured and is seen that GB/T15102-2006, test-results see the following form 1.
Table 1:
| ? | Glossiness (°) | Bonding strength (MPa) | The anti-be full of cracks in surface | Free formaldehyde (mg/100g) |
| Embodiment 1 | ≥85° | ≥1.0 | There is not be full of cracks | ≤9.0 |
| Embodiment 2 | ≥70° | ≥0.6 | Be full of cracks | ≤30 |
| Embodiment 3 | ≥65° | ≥0.5 | Be full of cracks | ≤21 |
| Embodiment 4 | ≥75° | ≥0.7 | Be full of cracks | ≤18 |
Claims (4)
1. the high gloss cracking resistance tackiness agent that is used for multiplying plywood, multiplying plywood is gluing superimposed mutually by monolayer material, described tackiness agent comprises urea-formaldehyde resin adhesive and adds its interior auxiliary agent, trimeric cyanamide resin glue and add auxiliary agent in it, it is characterized in that urea-formaldehyde resin adhesive made by following preparation method: in the disposable adding reactor of formaldehyde, be 6.5 ~ 10.5 with the sodium hydroxide adjust pH behind the heat temperature raising, add for the first time urea, add-on is 2/3 of urea gross weight, temperature of reaction is warming up to 88 ℃ and be incubated 30 minutes, with volume ratio 1:1 formic acid adjust pH between 4.0-4.2, reaction reaches 1:2.0 ~ 2.5 than number and o'clock is 5.0 ~ 9.0 and is cooled to 60 ℃ with the sodium hydroxide adjust pH to water-soluble, added remaining 1/3 urea insulation reaction 30 minutes, cooling also adds water, the add-on of water is 9.23% of gross weight, temperature obtains urea-formaldehyde resin adhesive when being down to 35-40 ℃, the total consumption of urea and formaldehyde mole ratio are 1:1.2, and the pH value of urea-formaldehyde resin adhesive is 6.5-6.8, viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:2.3-2.7/20 ℃;
Described trimeric cyanamide resin glue is made by following preparation method: add formaldehyde in the reactor, water and properties-correcting agent, the product of the production model XL-021 of Linan, described properties-correcting agent Hangzhou Dien chemical industry company limited, be 7.0 ~ 11.0 with the sodium hydroxide adjust pH, when being warming up to 35 ℃, add trimeric cyanamide and hexanolactam and continue and heat up, insulation when being heated to 90 ℃, when being cooled to 35～40 ℃ 2.0～2.5 the time, resin water Combination in the still gets the trimeric cyanamide resin glue, wherein the add-on of hexanolactam is the 3.4-3.7% of trimeric cyanamide weight, the mol ratio of trimeric cyanamide and formaldehyde is 1:1.7, the pH value of trimeric cyanamide resin glue is 8.0～8.5, and viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:1.4 ~ 1.6/20 ℃.
2. the high gloss cracking resistance tackiness agent that is used for multiplying plywood according to claim 1, it is characterized in that the urea-formaldehyde resin adhesive auxiliary agent comprises permeate agent, remover and solidifying agent, described auxiliary agent adds weight in the urea-formaldehyde resin adhesive gross weight, permeate agent is 0.2%, remover is 0.2%, and solidifying agent is 0.2%; Described permeate agent is the WT320 that Guangzhou pleased star business corporation produces, and described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, and described solidifying agent is the CT0012 that the Dongguan gloomy chemical materials of sky company limited produces.
3. the high gloss cracking resistance tackiness agent that is used for multiplying plywood according to claim 1, it is characterized in that reacting and add auxiliary agent before the trimeric cyanamide resin glue that obtains uses, the auxiliary agent of described trimeric cyanamide resin glue comprises permeate agent, remover, anti-fissuring agent and solidifying agent, the adding weight of described auxiliary agent is in trimeric cyanamide resin glue base-material glue gross weight: permeate agent is 0.2%, remover is 0.2%, solidifying agent is 0.2%, and anti-fissuring agent is 0.2%-7%; Described permeate agent is the WT320 that Guangzhou pleased star business corporation produces, described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, described solidifying agent is the HS-710 that finishing material company limited of the big nation of Dongguan City produces, and described anti-fissuring agent is the XL-011 that Linan, Hangzhou Dien chemical industry company limited produces.
4. the preparation method of a multiplying plywood is characterized in that may further comprise the steps:
(1) preparation adhesive base:
Described tackiness agent comprises urea-formaldehyde resin adhesive and adds its interior auxiliary agent, trimeric cyanamide resin glue and add auxiliary agent in it, urea-formaldehyde resin adhesive is made by following preparation method: in the disposable adding reactor of formaldehyde, be 6.5 ~ 10.5 with the sodium hydroxide adjust pH behind the heat temperature raising, add for the first time urea, add-on is 2/3 of urea gross weight, temperature of reaction is warming up to 88 ℃ and be incubated 30 minutes, with volume ratio 1:1 formic acid adjust pH between 4.0-4.2, reaction reaches 1:2.0 ~ 2.5 than number and o'clock is 5.0 ~ 9.0 and is cooled to 60 ℃ with the sodium hydroxide adjust pH to water-soluble, added remaining 1/3 urea insulation reaction 30 minutes, cooling also adds water, the add-on of water is 9.23% of gross weight, temperature obtains urea-formaldehyde resin adhesive when being down to 35-40 ℃, the total consumption of urea and formaldehyde mole ratio are 1:1.2, and the pH value of urea-formaldehyde resin adhesive is 6.5-6.8, viscosity is 14-15s/B
4.20 ℃, urea-formaldehyde resin adhesive and water than number 1:2.3-2.7/20 ℃;
Described trimeric cyanamide resin glue is made by following preparation method: add formaldehyde in the reactor, the XL-021 that water and Linan, Hangzhou Dien chemical industry company limited produce, be 7.0 ~ 11.0 with the sodium hydroxide adjust pH, when being warming up to 35 ℃, add trimeric cyanamide and hexanolactam and continue and heat up, insulation when being heated to 90 ℃, when being cooled to 35～40 ℃ 2.0～2.5 the time, resin water Combination in the still gets the trimeric cyanamide resin glue, wherein the add-on of hexanolactam is the 3.4-3.7% of trimeric cyanamide weight, the mol ratio of trimeric cyanamide and formaldehyde is 1:1.7, the pH value of trimeric cyanamide resin glue is 8.0～8.5, and viscosity is 14-15s/B
4.20 ℃, resin and water than number 1:1.4 ~ 1.6/20 ℃;
(2) configuration urea-formaldehyde resin adhesive and trimeric cyanamide resin glue tamanori: to the auxiliary agent of above-mentioned urea-formaldehyde resin adhesive and trimeric cyanamide resin glue adding formula ratio;
The urea-formaldehyde resin adhesive auxiliary agent comprises permeate agent, remover and solidifying agent, and described auxiliary agent adds weight in the urea-formaldehyde resin adhesive gross weight, and permeate agent is 0.2%, remover is 0.2%, and solidifying agent is 0.2%; Described permeate agent is the WT320 that Guangzhou pleased star business corporation produces, and described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, and described solidifying agent is the CT0012 that the Dongguan gloomy chemical materials of sky company limited produces;
Before using, the trimeric cyanamide resin glue that reaction obtains adds auxiliary agent, the auxiliary agent of described trimeric cyanamide resin glue comprises permeate agent, remover, anti-fissuring agent and solidifying agent, the adding weight of described auxiliary agent is in trimeric cyanamide resin glue base-material glue gross weight: permeate agent is 0.2%, remover is 0.2%, solidifying agent is 0.2%, and anti-fissuring agent is 0.2%-7%; Described permeate agent is the WT320 that Guangzhou pleased star business corporation produces, described remover is the PAT523 that finishing material company limited of the big nation of Dongguan City produces, described solidifying agent is the HS-710 that finishing material company limited of the big nation of Dongguan City produces, the XL-011 that Linan, described anti-fissuring agent Hangzhou Dien chemical industry company limited produces;
(3) impregnation: adopt impregnation twice, impregnation urea-formaldehyde resin adhesive dipping decorative paper is soaked into paper in the urea-formaldehyde resin adhesive for the first time, soaks and solidifies 8 minutes, and the weight of dipping back decorative paper is 120% before the gluing;
Impregnation adopts trimeric cyanamide resin glue surface coated for the second time, adds auxiliary agent XL-011 in the trimeric cyanamide resin glue, and add-on is 0.3% of trimeric cyanamide resin glue gross weight, obtains gum dipped paper;
(4) assembly: above-mentioned gum dipped paper wood grain faced up to be placed on the plywood facing, again glued board just face melamine impregnated paper positive overlap stack after, level is put into thermocompressor;
(5) hot pressing: quick make thermocompressor, Control of Hot Press Control pressure are at 10～20kpa, and starting temperature is 40～50 ℃, and temperature is raised to 100～150 ℃ in 10～20 minutes, are incubated after 20～50 minutes, are cooled to 40～50 ℃ gradually, and the thermocompressor release is opened and got final product.
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| CN108705647A (en) * | 2017-07-15 | 2018-10-26 | 芜湖乾凯材料科技有限公司 | Environment protection pressed-fibre board based on modified liquid paraffin and its processing method |
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| CN110920032A (en) * | 2019-12-25 | 2020-03-27 | 雷誉(上海)包装制品有限公司 | Plastic suction forming process |
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| CN115012247A (en) * | 2022-06-24 | 2022-09-06 | 山东织巢鸟建材有限公司 | Modified melamine coated paper and preparation method thereof |
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