CN1239686C - Demoulding composition system for preparing polyisocyanate adhesive artificial board and process for preparation thereof - Google Patents

Demoulding composition system for preparing polyisocyanate adhesive artificial board and process for preparation thereof Download PDF

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CN1239686C
CN1239686C CN 200310105756 CN200310105756A CN1239686C CN 1239686 C CN1239686 C CN 1239686C CN 200310105756 CN200310105756 CN 200310105756 CN 200310105756 A CN200310105756 A CN 200310105756A CN 1239686 C CN1239686 C CN 1239686C
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acid ester
mold release
release compositions
wax
wax emulsion
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CN1546621A (en
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杨西红
于强
孙大琴
杨建业
朱芸林
叶明�
丁凌
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Wanhua Hexiang Group Co ltd
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Yantai Wanhua Polyurethanes Co Ltd
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Abstract

The present invention relates to a demoulding composition system for preparing artificial boards from polyisocyanate adhesives and a preparation technique, which belongs to the field of preparation products in chemical industry. An external demoulding agent or an internal demoulding agent comprises the following raw material components: wax emulsion and one or the mixture of two of fatty acid esters, phosphate esters and salts thereof, wherein the weight of the wax emulsion in the demoulding composition is not higher or lower than 50%, and the weight of one or the mixture of two of fatty acid esters, phosphate esters and salts thereof is not lower or higher than 50%. The external demoulding agent or the internal demoulding agent has the following preparation technique: preparing the wax emulsion, preparing one or the copolymerized mixture of two of fatty acid esters, phosphate esters and salts thereof, and mixing the wax emulsion with the copolymerized mixture so as to obtain the external demoulding agent or the internal demoulding agent of the demoulding composition system. The demoulding composition system of the present invention can ensure that an artificial board is completely demoulded from the surface of a hot pressboard or a conveyor belt under the precondition that the excellent adhesive property of polyisocyanate is ensured.

Description

Be used to prepare the mold release compositions system and the preparation technology of polyisocyanic acid ester gum wood-based plate
One, affiliated technical field
The present invention relates to be used to prepare the mold release compositions system and the preparation technology thereof of polyisocyanic acid ester gum wood-based plate, more particularly the present invention relates to use polyisocyanates to prepare the employed mold release compositions system of wood-based plate inner pattern releasing agent applicable, external release agent and preparation technology thereof, belong to chemical industry formulation products technical field as tackiness agent.
Two, background technology
Organic multiple isocyanate is as a kind of high-performance environment-friendly tackiness agent, long-term tackiness agent as the lignocellulose-containing material is mainly used in agricultural crop straw shaving board, common wooden flake board, oriented wood chipboard, fiberboard and glued boards etc. such as making wheat straw, straw.This tackiness agent has characteristics such as adhesiveproperties is good, the formaldehydeless public hazards of goods.But in the pressing plate process, because the bond properties of polyisocyanates excellence, can cause lignocellulose-containing material and platen to stick together, needing to destroy the plate face could separate, grievous injury board quality, and cleaning clamp surface or travelling belt surface, consuming time, effort has had a strong impact on production efficiency.
In order to solve the haftplatte problem, people have adopted many methods.For example, (1) uses tetrafluoroethylene backing plate or kraft paper.(2) adopt the watch core layer separately to execute glue not of the same race, urea aldehyde or phenolic glue are executed in the top layer, and sandwich layer is executed the polyisocyanic acid ester gum.But this several method, perhaps influence is conducted heat, operation inconvenience in continuous production; Perhaps poor adhesion, goods have formaldehyde to discharge, and have influenced product properties, have reduced product specification.
In addition, the research of many companies is arranged, solve the haftplatte problem by using external release agent and inner pattern releasing agent applicable.External release agent such as United States Patent (USP) 4,110,297 disclosed metallic soap classes, the employed metallic soap class of this method spraying the tracheae that can stimulate the people when using, causes malaise symptoms such as cough.United States Patent (USP) 20030015122 uses the mixed emulsion of lipid acid and polyethylene wax to make external release agent, and lipid acid can be selected oleic acid for use, but this emulsion stripping result is general, and stripping result is poor continuously.Inner pattern releasing agent applicable such as United States Patent (USP) 5554438 mix paraffin and oleic acid, and 100 ℃ kept 2 minutes down, isocyanic ester and oleic acid were mixed down at 25 ℃ again.Wax/lipid acid is sprayed on the wood shavings, and consumption is 1.25% of a wood shavings consumption, isocyanic ester and oleic mixture is sprayed on the wood shavings again, and consumption is 2.0% of a wood shavings consumption, and hot pressing obtains shaving board then.But add the problem that wax and lipid acid can cause package stability in isocyanic ester, lipid acid can react with polyisocyanates again, has reduced the bond properties of tackiness agent.
Mostly the method that other improves the isocyanate adhesive demolding performace is directly to add the inner pattern releasing agent applicable material in polyisocyanates, these all inevitably cause the problem of package stability, and these methods are not gratifying methods.
Three, summary of the invention
The object of the present invention is to provide the mold release compositions system inner pattern releasing agent applicable, external release agent and the preparation technology thereof that are used to prepare polyisocyanic acid ester gum wood-based plate, make the haftplatte problem that tackiness agent is produced wood-based plate with solving polyisocyanates.The inner pattern releasing agent applicable of this system, external release agent guarantee that again wood-based plate is from the surface of heating platen or the demoulding fully of travelling belt surface under the bond properties prerequisite that guarantees the polyisocyanates excellence.
Use mold release compositions system inner pattern releasing agent applicable of the present invention, external release agent can be realized above-mentioned purpose, mold release compositions system external release agent of the present invention or inner pattern releasing agent applicable product: (A) wax emulsion, (B) one or both mixture in fatty acid ester, phosphoric acid ester and its esters for adopting following raw material components to make.
For avoiding the polyisocyanates tackiness agent storage stability to occur, mold release compositions can separate with polyisocyanates and sprays application in wood shavings or the fiber, but perhaps joins in the isocyanate emulsion, sprays application to together in wood shavings or the fiber.
Being used for organic multiple isocyanate of the present invention and comprising aromatic series, aliphatics and alicyclic polyisocyanates known to the polyurethane chemistry industry, preferably is the polyisocyanates of liquid under those room temperatures.Particularly suitable be poly methylene poly phenyl poly isocyanate, object lesson comprises: PM-200, PM-300 and PM-400 that Yantai Wanhua Polyurethane Co., Ltd produces.But also can be isocyanate emulsion.The consumption of isocyanic ester approximately is the 2%-8% of over dry wood shavings or fiber consumption, preferred 3-6%, and this need adjust according to the density and the performance requriements of goods.
Mold release compositions system external release agent of the present invention, the weight of wax emulsion is no more than 50% in mold release compositions, preferably 20-40%; Fatty acid ester or phosphoric acid ester and its esters can be selected one or both mixture for use, and weight is not less than 50% in mold release compositions, preferably 60-80%.The solid content of external release agent is its weight percent 1-20% that accounts for external release agent, and optimum is 5-10%, can directly spray during use on the surface of steel slab surface and travelling belt, also can dilute one times of surface that sprays at steel slab surface and travelling belt.
Mold release compositions system inner pattern releasing agent applicable of the present invention, the weight of wax emulsion is not less than 50% in mold release compositions, preferably 60-80%; Fatty acid ester or phosphoric acid ester and its esters can be selected one or both mixture for use, and weight is not higher than 50% in mold release compositions, preferably 20-40%.The solid content of inner pattern releasing agent applicable is its weight percent 10-40% that accounts for inner pattern releasing agent applicable, and optimum is 20-30%, needs independently spraying system during use, sprays inner pattern releasing agent applicable in applying glue.But perhaps be pre-mixed, together spray with isocyanate emulsion.
Wax used in the present invention comprises vegetable wax, animal wax, mineral wax, synthetic wax and other fusing point wax class between 40 ℃-170 ℃.Object lesson comprises: ceresine, paraffin, beeswax, spermaceti, palm wax, montanin wax, Microcrystalline Wax, polyethylene wax, oxidized polyethlene wax etc., the fusing point of wax requires greater than 40 ℃, less than 170 ℃.
The preparation method of mold release compositions system external release agent or inner pattern releasing agent applicable may further comprise the steps: the preparation of a, wax emulsion; The preparation of one or both copolymer mixture in b, fatty acid ester, phosphoric acid ester and its esters; C, above-mentioned wax emulsion are mixed with copolymer mixture and are obtained the outer demoulding releasing agent of mold release compositions system.
The used wax of the present invention must be made the wax emulsion, and emulsifying agent can use anionic emulsifier, cationic emulsifier, nonionic emulsifier and amphoteric emulsifier.Anionic emulsifier comprises metal carboxylate, Sulfates, Sulfonates and phosphoric acid salt, such as sodium lauryl sulphate, dodecyl sulphate potassium, sodium oleate, potassium oleate, sodium laurylsulfonate, Sodium dodecylbenzene sulfonate and sodium metnylene bis-naphthalene sulfonate, trolamine oleate etc.Cationic emulsifier comprises the salt of quaternary ammonium salt and other ammonium.Such as palmityl trimethyl ammonium chloride, Dodecyl trimethyl ammonium chloride and stearyl dimethyl benzyl ammonium chloride etc.Nonionic emulsifier comprises: polyoxyethylene carboxylicesters, polyoxyethylene polyol carboxylate, polyethylene oxide alkyl ethers, polyoxyethylene alkyl aryl ether etc.Such as polysorbas20, polysorbate40, polysorbate60, tween 80 and Nonyl pheno base ether etc.Amphoteric emulsifier comprises carboxylic-acid amphoteric emulsifier, sulfuric acid ester amphoteric emulsifier, phosphoric acid ester amphoteric emulsifier and sulfonic acid class amphoteric emulsifier.Such as carboxyl empgen BB etc.
The preparation method of wax emulsion can add wax, emulsifying agent and water in the emulsor earlier, stirs for some time under certain temperature and rotating speed.In order to prepare the wax emulsion of shelf-stable, the selection of emulsifying agent and the control of stir speed (S.S.) are very crucial.
Another feed composition of mold release compositions system external release agent or inner pattern releasing agent applicable is fatty acid ester, phosphoric acid ester and its esters.The alkyl carbon atoms number of fatty acid ester will be between 12-40, and solid or liquid all can.Can select the copolymer mixture of oleic acid monooctyl ester, octyl stearate, butyl oleate, butyl stearate, linolic acid monooctyl ester, linolic acid butyl ester and oleic acid or stearic acid and methyl acrylate or butyl acrylate.Phosphoric acid ester comprises phosphoric acid ester or their an alkali metal salts such as di (isooctyl) phosphate, Tryfac 5573, dilauryl phosphoric acid ester, hexadecanyl phosphate.Above-mentioned substance can select several materials composite to together, can make emulsion in advance, mixes in joining the wax emulsion, perhaps adds in the preparation wax emulsion stage, finally obtains the emulsion of shelf-stable.
Mold release compositions system of the present invention can guarantee that again wood-based plate is from the surface of heating platen or the demoulding fully of travelling belt surface under the bond properties prerequisite that guarantees the polyisocyanates excellence.
Four, embodiment
Embodiment 1:
1. the feed composition of mold release compositions system external release agent, inner pattern releasing agent applicable
The feed composition of external release agent is: (A) wax emulsion, (B) one or both mixture in fatty acid ester, phosphoric acid ester and its esters, the weight of wax emulsion is 20% in mold release compositions, and the mixture weight of one or both in fatty acid ester, phosphoric acid ester and its esters is 80% in mold release compositions; The solid content of external release agent is 2%; Wax in the wax emulsion is selected from vegetable wax, and emulsifying agent uses the dodecyl sulphate potassium in the anionic emulsifier, and fatty acid ester selects the copolymer mixture of oleic acid and butyl acrylate, and phosphoric acid ester (salt) class can be selected di-isooctyl.
The feed composition of inner pattern releasing agent applicable is: (A) wax emulsion, (B) one or both mixture in fatty acid ester, phosphoric acid ester and its esters, the weight of wax emulsion is 60% in mold release compositions, and the mixture weight of one or both in fatty acid ester, phosphoric acid ester and its esters is 40% in mold release compositions; The solid content of inner pattern releasing agent applicable is 10%; Wax in the wax emulsion is selected from vegetable wax, and emulsifying agent uses the dodecyl sulphate potassium in the anionic emulsifier, and fatty acid ester selects the copolymer mixture of oleic acid and butyl acrylate, and phosphoric acid ester (salt) class can be selected di-isooctyl.
2. the preparation technology of mold release compositions system external release agent or inner pattern releasing agent applicable
(1), the preparation of wax emulsion
Earlier a certain amount of Wax, water and emulsifying agent are joined in the emulsor, elevated temperature keeps certain temperature to 80-130 ℃ in 30min, after continuously stirring 1-2 hour, high-speed stirring 10min, stirring at low speed again, and logical water quench is to room temperature, static storage;
(2), the preparation of one or both mixture in fatty acid ester, phosphoric acid ester and its esters
A certain amount of oleic acid, butyl acrylate and polymerizing catalyst are joined in the reactor, and polymerizing catalyst is a peroxidation benzene first, and high-speed stirring and elevated temperature reacted 3-6 hour to 100-170 ℃, can make the oily liquids of homogeneous.Di-isooctyl and an amount of water are joined oily liquids, stirred 1-2 hour under the certain temperature, can obtain stable emulsion;
(3), the wax emulsion is joined in the above-mentioned emulsion, stir for some time, promptly obtain the releasing agent emulsion of shelf-stable.
3. the evaluation of stripping result
The wheat straw or the wood particle that crush are divided by the watch core layer, and thin wheat straw or wood particle are used in the top layer, and sandwich layer uses thick wheat straw or wood shavings.At first the top layer material is put into the glue mixer that has the glue spraying head that atomizes, the PM-200 that measures is sprayed application in wheat straw or the wood particle, stir.Resin added is 3% of over dry wheat straw or a wood shavings amount.Use the same method, spray PM-200 in sandwich layer wheat straw or wood particle, consumption is 3% of over dry wheat straw or a wood shavings amount, obtains having mixed the core layer material of glue.Coat releasing agent at the upper and lower steel plate of press respectively, releasing agent consumption (pressing solid content calculates) is 1.3g/m 2Top layer material, the core layer material of having mixed glue are mated formation on steel plate first precompressed, hot repressing, 170 ℃ of hot pressing temperatures, hot pressing time 17s/mm, pressure 3.5Mpa.After hot pressing is intact, take sheet material away, observe the wood shavings particulate situation that is bonded on the metal platen, estimate the stripping result of releasing agent.Be coated with releasing agent one time, its continuous stripping result is listed in table 1.
Table 1
Plate number The top board stripping result The press table stripping result
1 5 5
2 5 5
3 5 5
4 5 5
5 5 4.5
6 5 4.5
7 4.5 4.5
8 4.5 4
9 4 4
10 4 3
11 3 3
Standards of grading are estimated according to what and the complexity of taking out plate that are bonded at wood shavings amount on the metal platen, represented the complete demoulding in 5 minutes, the wood shavings bits that do not have adhesion, slightly be stained with a small amount of wood shavings bits in 4 minutes, take out not difficultly, be stained with more wood shavings bits in 3 minutes, take out difficulty, 2 fens local haftplattes, 1 fen complete haftplatte.
Embodiment 2:
1. the feed composition of mold release compositions system external release agent, inner pattern releasing agent applicable
The feed composition of external release agent is: (A) wax emulsion, (B) a kind of ester class in fatty acid ester, phosphoric acid ester and its esters or the mixture of two kinds of ester classes, the weight of wax emulsion is preferably 40% in mold release compositions, one or both mixture weight is preferably 60% in fatty acid ester, phosphoric acid ester and its esters in mold release compositions; The solid content of external release agent is 19%; Wax in the wax emulsion is selected from synthetic wax, and emulsifying agent uses the palmityl trimethyl ammonium chloride of cationic emulsifier, and fatty acid ester selects butyl oleate, and phosphoric acid ester (salt) class can be selected the dilauryl phosphoric acid ester.
The feed composition of inner pattern releasing agent applicable is: (A) wax emulsion, (B) one or both mixture in fatty acid ester, phosphoric acid ester and its esters, the weight of wax emulsion is preferably 80% in mold release compositions, one or both mixture weight is preferably 20% in fatty acid ester, phosphoric acid ester and its esters in mold release compositions; The solid content of inner pattern releasing agent applicable is 28%; Wax in the wax emulsion is selected from synthetic wax, and emulsifying agent uses the palmityl trimethyl ammonium chloride of cationic emulsifier, and fatty acid ester selects butyl oleate, and phosphoric acid ester (salt) class can be selected the dilauryl phosphoric acid ester.
2. the preparation technology of mold release compositions system external release agent or inner pattern releasing agent applicable
(1), the preparation of wax emulsion
Earlier a certain amount of Wax, water and emulsifying agent are joined in the emulsor, elevated temperature keeps certain temperature to 80-130 ℃ in 30min, after continuously stirring 1-2 hour, high-speed stirring 10min, stirring at low speed again, and logical water quench is to room temperature, static storage;
(2), the preparation of one or both mixture in fatty acid ester, phosphoric acid ester and its esters
A certain amount of butyl oleate is joined in the reactor, and high-speed stirring and elevated temperature reacted 3-6 hour to 100-170 ℃, can make the oily liquids of homogeneous.Dilauryl phosphoric acid ester and an amount of water are joined oily liquids, stirred 1-2 hour under the certain temperature, can obtain stable emulsion;
(3), the wax emulsion is joined in the above-mentioned emulsion, stir for some time, promptly obtain the releasing agent emulsion of shelf-stable.
3. the evaluation of stripping result
The wheat straw or the wood particle that crush are divided by the watch core layer, and thin wheat straw or wood particle are used in the top layer, and sandwich layer uses thick wheat straw or wood shavings.At first the top layer material is put into the glue mixer that has the glue spraying head that atomizes, PM-200 and the inner pattern releasing agent applicable composition that measures sprayed application in wheat straw or the wood particle, stir.Resin added is 3% of over dry wheat straw or a wood shavings amount, and the releasing agent consumption is 0.5% of over dry wheat straw or wood shavings.Use the same method, but do not add releasing agent, spray PM-200, consumption is 3% of over dry wheat straw or a wood shavings amount, obtains having mixed the core layer material of glue.Coat external release agent at the upper and lower steel plate of press respectively, releasing agent consumption (pressing solid content calculates) is 1.3g/m 2Top layer material, the core layer material of having mixed glue are mated formation on steel plate first precompressed, hot repressing, 170 ℃ of hot pressing temperatures, hot pressing time 17s/mm, pressure 3.5MPa.After hot pressing is intact, take sheet material away, observe the wood shavings particulate situation that is bonded on the metal platen, estimate the stripping result of releasing agent.Be coated with releasing agent one time, its continuous stripping result is listed in table 2.
Table 2
Plate number The top board stripping result The press table stripping result
1 5 5
2 5 5
3 5 5
4 5 5
5 5 5
6 5 5
7 5 5
8 5 4.5
9 5 4.5
10 4.5 4.5
11 4 4
12 4 4
13 4 4
14 4 4
15 4 4
16 4 4
17 4 4
18 4 3
19 4 3
20 3 3
Embodiment 3:
1. the feed composition of mold release compositions system external release agent, inner pattern releasing agent applicable
The feed composition of external release agent is: (A) wax emulsion, (B) a kind of ester class in fatty acid ester, phosphoric acid ester and its esters or the mixture of two kinds of ester classes, the weight of wax emulsion is preferably 30% in mold release compositions, the mixture weight of one or both in fatty acid ester, phosphoric acid ester and its esters is preferably 70% in mold release compositions; The solid content of external release agent is 10%; Wax in the wax emulsion is selected from mineral wax, and emulsifying agent uses nonionic emulsifier polyoxyethylene carboxylicesters, and fatty acid ester selects the linolic acid monooctyl ester, and phosphoric acid ester (salt) class can be selected hexadecanyl phosphate.
The feed composition of inner pattern releasing agent applicable is: (A) wax emulsion, (B) one or both mixture in fatty acid ester, phosphoric acid ester and its esters, the weight of wax emulsion is preferably 70% in mold release compositions, one or both mixture weight is preferably 30% in fatty acid ester, phosphoric acid ester and its esters in mold release compositions; The solid content of inner pattern releasing agent applicable is 40%; Wax in the wax emulsion is selected from mineral wax, and emulsifying agent uses nonionic emulsifier polyoxyethylene carboxylicesters, and fatty acid ester selects the linolic acid monooctyl ester, and phosphoric acid ester (salt) class can be selected hexadecanyl phosphate.
2. the preparation technology of mold release compositions system external release agent or inner pattern releasing agent applicable
(1), the preparation of wax emulsion
Earlier a certain amount of Wax, water and emulsifying agent are joined in the emulsor, elevated temperature keeps certain temperature to 80-130 ℃ in 30min, after continuously stirring 1-2 hour, high-speed stirring 10min, stirring at low speed again, and logical water quench is to room temperature, static storage;
(2), the preparation of one or both mixture in fatty acid ester, phosphoric acid ester and its esters
A certain amount of linolic acid monooctyl ester is joined in the reactor, and high-speed stirring and elevated temperature reacted 3-6 hour to 100-170 ℃, can make the oily liquids of homogeneous.Hexadecanyl phosphate and an amount of water are joined oily liquids, stirred 1-2 hour under the certain temperature, can obtain stable emulsion;
(3), the wax emulsion is joined in the above-mentioned emulsion, stir for some time, promptly obtain the releasing agent emulsion of shelf-stable.
3. the evaluation of stripping result
Judgement criteria is with embodiment 2.The present invention is not limited to the foregoing description, other does not depart from the embodiment of spirit of the present invention, practice by a series of as above embodiment, observation is bonded at the wood shavings particulate situation on the metal platen, all can draw the stripping result of above-mentioned evaluation releasing agent, thereby realize goal of the invention of the present invention.

Claims (8)

1, is used to prepare the mold release compositions system of polyisocyanic acid ester gum wood-based plate, the external release agent or the product of inner pattern releasing agent applicable that it is characterized in that the mold release compositions system: (A) wax emulsion, (B) one or both mixture in fatty acid ester, phosphoric acid ester and its esters for adopting following raw material components to make; The weight of the wax emulsion of mold release compositions system external release agent is no more than 50% in mold release compositions, one or both mixture weight is not less than 50% in fatty acid ester, phosphoric acid ester and its esters in mold release compositions; The weight of the wax emulsion of mold release compositions system inner pattern releasing agent applicable is not less than 50% in mold release compositions, a kind of ester class in fatty acid ester, phosphoric acid ester and its esters or the mixture weight of two kinds of ester classes are not higher than 50% in mold release compositions.
2, according to the described mold release compositions system that is used to prepare polyisocyanic acid ester gum wood-based plate of claim 1, the weight that it is characterized in that the wax emulsion of mold release compositions system external release agent is 20-40% in mold release compositions, one or both mixture weight is 60-80% in mold release compositions in fatty acid ester, phosphoric acid ester and its esters.
3,, it is characterized in that the solid content of external release agent accounts for the weight percent 1-20% of external release agent for it according to claim 1 or the 2 described mold release compositions systems that are used to prepare polyisocyanic acid ester gum wood-based plate.
4, according to the described mold release compositions system that is used to prepare polyisocyanic acid ester gum wood-based plate of claim 1, the weight that it is characterized in that the wax emulsion of mold release compositions system inner pattern releasing agent applicable is 60-80% in mold release compositions, one or both mixture weight is 20-40% in mold release compositions in fatty acid ester, phosphoric acid ester and its esters.
5,, it is characterized in that the solid content of inner pattern releasing agent applicable accounts for the weight percent 10-40% of inner pattern releasing agent applicable for it according to claim 1 or the 4 described mold release compositions systems that are used to prepare polyisocyanic acid ester gum wood-based plate.
6,, it is characterized in that wax in the wax emulsion is selected from a kind of in following: vegetable wax, animal wax, mineral wax, synthetic wax and other fusing point wax class between 40 ℃-170 ℃ according to the described mold release compositions system that is used to prepare polyisocyanic acid ester gum wood-based plate of claim 1; Fatty acid ester is selected from a kind of in following: the copolymer mixture of oleic acid monooctyl ester, octyl stearate, butyl oleate, butyl stearate, linolic acid monooctyl ester, linolic acid butyl ester and oleic acid/stearic acid and methyl acrylate/butyl acrylate; Phosphoric acid ester (salt) class is selected from a kind of in following: di (isooctyl) phosphate, Tryfac 5573, dilauryl phosphoric acid ester, hexadecanyl phosphate, double hexadecyl acid ester, octadecyl phosphoric acid ester, two octadecyl phosphoric acid ester and corresponding metal-salt.
7, be used to prepare the preparation technology of the mold release compositions system of polyisocyanic acid ester gum wood-based plate, the external release agent or the inner pattern releasing agent applicable preparation that it is characterized in that its mold release compositions system may further comprise the steps: the preparation of a, wax emulsion: Wax, water and emulsifying agent are joined in the emulsor, heat up, stir, the water flowing cool to room temperature, static storage; The preparation of a kind of ester class in b, fatty acid ester, phosphoric acid ester and its esters or the copolymer mixture of two kinds of ester classes: in fatty acid ester and its esters one or both are joined in the reactor, stir, react oily liquids, phosphoric acid ester and an amount of water are added, stir stable emulsion; C, above-mentioned wax emulsion are mixed by following requirement with copolymer mixture and obtained mold release compositions system external release agent and inner pattern releasing agent applicable: 1. the weight of the wax emulsion of external release agent is no more than 50% in mold release compositions, and one or both mixture weight is not less than 50% in fatty acid ester, phosphoric acid ester and its esters in mold release compositions; 2. the solid content of external release agent accounts for the weight percent 1-20% of external release agent for it; 3. the weight of the wax emulsion of inner pattern releasing agent applicable is not less than 50% in mold release compositions, and a kind of ester class in fatty acid ester, phosphoric acid ester and its esters or the mixture weight of two kinds of ester classes are not higher than 50% in mold release compositions; 4. the solid content of inner pattern releasing agent applicable accounts for the weight percent 10-40% of inner pattern releasing agent applicable for it.
8, according to the described preparation technology who is used to prepare the external release agent of polyisocyanic acid ester gum wood-based plate of claim 7, it is characterized in that the emulsifying agent in the described wax emulsion preparation uses anionic emulsifier, cationic emulsifier, nonionic emulsifier or amphoteric emulsifier, the wax emulsion can be made emulsion in advance with mixing of copolymer mixture, join again in the wax emulsion and mix, perhaps add, finally obtain the emulsion of shelf-stable in the preparation wax emulsion stage.
CN 200310105756 2003-11-29 2003-11-29 Demoulding composition system for preparing polyisocyanate adhesive artificial board and process for preparation thereof Expired - Lifetime CN1239686C (en)

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CN103409218B (en) * 2013-07-17 2015-04-22 安徽中铁工程材料科技有限公司 Concrete mold release agent and preparation method thereof
CN104498161A (en) * 2014-12-18 2015-04-08 蒙城县科技创业服务中心 Concrete release agent prepared from animal fat
CN106281192B (en) 2015-05-15 2019-05-14 万华禾香板业有限责任公司 A kind of emulsifiable isocyanate composition and preparation method thereof
CN105602467B (en) * 2016-01-28 2017-10-31 江西绿丰新材料股份有限公司 Releasing agent for isocyanate adhesive and preparation method thereof
CN108326228B (en) * 2018-02-07 2019-11-29 广州采润新材料有限公司 Aqueous release agent and preparation method thereof for anodized aluminum alloy die casting thin pieces
CN113103396B (en) * 2020-01-13 2023-01-13 万华化学集团股份有限公司 Artificial board without aldehyde addition and manufacturing method thereof
CN113352511A (en) * 2021-05-28 2021-09-07 南京理工大学 Release agent and preparation method and application thereof

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