CN110272707A - Milling fiberboard is engraved in a kind of isocyanates gluing agent combination material and its manufacture - Google Patents

Milling fiberboard is engraved in a kind of isocyanates gluing agent combination material and its manufacture Download PDF

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Publication number
CN110272707A
CN110272707A CN201910546172.1A CN201910546172A CN110272707A CN 110272707 A CN110272707 A CN 110272707A CN 201910546172 A CN201910546172 A CN 201910546172A CN 110272707 A CN110272707 A CN 110272707A
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Prior art keywords
component
milling
adhesive
fiberboard
combination material
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CN201910546172.1A
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CN110272707B (en
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王向硕
涂松
胡兵波
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Wanhua Chemical Group Co Ltd
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Wanhua Chemical Group Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N1/00—Pretreatment of moulding material
    • B27N1/02—Mixing the material with binding agent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/10—Moulding of mats
    • B27N3/12—Moulding of mats from fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/08—Moulding or pressing
    • B27N3/20—Moulding or pressing characterised by using platen-presses
    • B27N3/203—Moulding or pressing characterised by using platen-presses with heating or cooling means
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
    • C08G18/6492—Lignin containing materials; Wood resins; Wood tars; Derivatives thereof
    • 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
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • 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
    • C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04—Polyurethanes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/04—Ingredients treated with organic substances
    • C08K9/06—Ingredients treated with organic substances with silicon-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K9/00—Use of pretreated ingredients
    • C08K9/08—Ingredients agglomerated by treatment with a binding agent

Abstract

Expect the present invention relates to a kind of fibre board use isocyanates gluing agent combination and its what is manufactured engraves milling fiberboard.The isocyanates adhesive combination material is the agent of isocyanates gluing, double crown layer silicon dioxide composite material and lignin wood materials.It engraves after milling fiberboard is mixed by separation fiber with the adhesive and forms under heat.The fiberboard prepared using the adhesive engraves milling performance with good, and dimensional stability keeps preferable.

Description

Milling fiberboard is engraved in a kind of isocyanates gluing agent combination material and its manufacture
Technical field
The invention belongs to wood-based plate manufacturing fields, and in particular to a kind of isocyanates gluing agent combination material and its manufacture are engraved Mill fiberboard.
Background technique
Fiberboard is one of big field of wood-based plate three, has it widely to use valence in fields such as furniture, car and boat, sound equipments Value.And milling fiberboard is engraved since its even density, fiber consolidation, internal bond strength are high, engraving and hollow out can be carried out, by engraving The plate of milling can get the various decorative patterns and pattern of customer requirement, thus have in fields such as doorframe, furniture, cabinets relatively broad Application.
However, the Milling Machining performance of engraving for the general fibre plate supplied currently on the market is unable to satisfy wanting for Furniture Manufacturing Enterprise It asks.The reason is that general fibre plate there are fibers coarse, section structure and Density inhomogeneity, internal bond strength are low etc. is insufficient, milling is engraved Face is soft, coarse, fluffing, plastic uptake are poor, is unable to satisfy that fiber softening is fine and smooth, section structure is consistent, even density, mechanical property It is up to state standards etc. and to require.
In recent years, people solve the urea-formaldehyde resin adhesive containing aldehyde by changing fiber quality, adjusting the modes such as heat pressing process Glutinous agent engraves engraving for milling fiberboard (containing aldehyde) and mills scared imbibition problem.Patent CN107030841A discloses a kind of E0 grades of low imbibition and engraves Fiberboard preparation method is milled, by improving and optimizating the preparation method of urea-formaldehyde resin adhesive, adjustment prepares the screening mill of fiberboard Piece, defibrator process, hot-pressing production process parameter improve and engrave milling fiberboard water resistance, and obtain smooth exquisiteness engraves milling section appearance Effect, and solve the problems, such as to engrave the hygroscopic deformation easily occurred during Milling Machining or veneer processing (using aqua type adhesive). Patent CN105479580B discloses a kind of by the way that the auxiliary agent formed with sodium carbonate and polyacrylamide is added, removes the miscellaneous of wood chip The techniques such as matter change the permeability and diffusible problem of chip raw material during the cooking process, while in boiling wood chip, using Special grinding improves fiber quality, so for preparing performance boost engraves milling fiberboard.Patent CN101298159B discloses one Tree species similar in specific gravity are chipped into wood of uniform size by the medium density fibre board (MDF) manufacturing process that kind is suitable for engraving milling plate processing Piece selects the fiber of specific mesh number through specific boiling temperature and digestion time to prepare the uniform Lauxite of density and engrave milling Plate.
But the above-mentioned process for having aldehyde to engrave milling fiberboard is applied to be engraved by what isocyanates gluing agent was processed without aldehyde When milling fiberboard, there are still plates to engrave the problems such as milling is scared, and dimensional stability is poor.This is because being added by isocyanates gluing agent When work is without aldehyde plate, resin added is few, and isocyanates can excessively penetrate into fibre substrate, and bonding way is that point combines, thus difficult To form an apparent adhesive layer.Currently, commercial type engraves milling fiberboard without aldehyde using isocyanates as adhesive, also Need to improve by way of repeatedly engraving milling engrave mill scared and dimensionally stable the problem of, this just greatly reduce production efficiency with Economic benefit.
Summary of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of isocyanic acids that milling fiberboard is engraved for no aldehyde Ester adhesive combination material, the combination material can solve current isocyanates gluing agent engrave milling fiberboard to engrave the scared and size of milling steady Qualitative question.
Another object of the present invention is to provide a kind of combined by above-mentioned isocyanates gluing agent to expect that is prepared engraves milling without aldehyde Fiberboard.
To achieve the above object of the invention, The technical solution adopted by the invention is as follows:
One kind engraving milling fibre board use isocyanates gluing agent combination material, which is made of component A and B component, in which:
Component A is isocyanates, accounts for solid 60~80%, preferably 70~78% containing quality of combination material；
B component is the aqueous dispersions containing B1 and B2, admittedly contain account for solid 20~40%, preferably 22 containing quality of combination material~ 30%；
The B1 is double crown layer silicon dioxide composite material, accounts for solid 30~70%, preferably 40 containing quality of B component dispersion liquid ~60%；The B2 is lignin wood materials, accounts for solid 30~70%, preferably 40~60% containing quality of B component dispersion liquid.
The present invention is formed using double crown layer silicon dioxide composite material and lignin wood materials collaboration cladding fiberfill fibers The mode of secondary skeleton solves engraving for fiberboard and mills scared and dimensional stability problems:
Firstly, double crown layer silicon dioxide composite material, which first passes through covalent bond, is tightly connected to silica dioxide granule for interior hat On, organic flexible polyoxyethylene ether carbochain is wrapped on the particle of interior hat cladding further through electrostatic self-assembled, it is special to form Double canopy structures.Unique multibody system can fill not by isocyanates gluing agent be bonded fiber gap and its into The flexible package of row, realizes uniform cladding in the filling process；Meanwhile in sawing unique double canopy structures in electrostatic force It can effectively be slided under effect, and the huge stress formed in sawing can be offset.
Secondly, double crown layer can play coating function, but close bridge joint cannot be formed, be easily caused in high temperature sawing VISCOUS FLOW is enriched with organic layer, therefore the present invention is additionally added lignin wood materials and carries out collaboration bonding.The activity of lignin Hydroxyl can be reacted with isocyanates, therefore bridge the fiber of high-strength and high-modulus effectively after coating lignin, and energy It is enough to be effectively fixed on double crown layer silica dioxide granule in locating plate construction, form complete secondary skeleton.This association The milling fiberboard of engraving of adhesive preparation can be effectively ensured in same-action, and in sawing and while engraving milling to be able to maintain section smooth, thus Reach good and engraves milling effect.It is worth noting that lignin wood materials can also form new bonding in Process of Applying Glue Line prevents isocyanates from excessively penetrating into fiber, can also reduce glue consumption to a certain degree and improve the mechanical strength of plate.
In the present invention, the interior hat of the B1 is organosilicon quaternary ammonium salt, preferably 3- (trimethoxy silicon propyl) dimethyl 18 Alkyl ammomium chloride, 3- (trimethoxy silica ethyl) dimethyl stearyl ammonium chloride, 3- (trimethoxy silicon propyl) dimethyl ten One of six alkyl ammomium chlorides and 3- (trimethoxy silicon propyl) dimethyl dodecyl ammonium chlorides or a variety of, more preferable 3- (trimethoxy silicon propyl) dimethyl stearyl ammonium chloride.
In the present invention, the outer hat of the B1 is aliphatic alcohol polyoxyethylene sulfonate, the rouge of preferred degree of polymerization n=10~20 Fat alcohol polyethenoxy ether sulphonate, more preferable Dodecyl Polyoxyethylene Ether potassium sulfonate, tetradecyl alchohol polyoxyethylene ether potassium sulfonate, 16 One of alcohol polyoxyethylene ether potassium sulfonate and polyoxyethylene octadecanol potassium sulfonate are a variety of, further preferred tetradecyl alchohol polyoxy Vinethene potassium sulfonate.
In the present invention, the preparation method of the B1 is comprised the following steps:
(1) interior crown grafting branch: silicon-dioxide powdery being dispersed in water to obtain suspension, is added into interior hat solution, instead Should after discard supernatant liquid, obtain the silica of interior crown grafting branch；
(2) it is preced with self assembly outside: preparing outer hat aqueous solution and adjusts pH value, the interior hat grafted silica that will be dispersed with stirring Grain is placed in reaction kettle, and after being also adjusted to identical pH value, addition is outer to be preced with solution reaction, and product washing, dry, removing are remained Solvent obtains double crown layer silicon dioxide composite material.
In the present invention, interior hat solution is the methanol solution of interior hat, concentration 60wt%-64wt% in step (1).
In the present invention, reaction temperature is room temperature, reaction time 16-24h in step (1).
In the present invention, step (2) China and foreign countries hat solution concentration is 9.5wt%-12.5wt%.
In the present invention, reaction temperature is 50-70 DEG C in step (2), reaction time 16-24h.
PH value is adjusted in the present invention, in step (2) to 7-11.
In the present invention, the preparation step of B2 lignin wood materials component are as follows:
I. bark is extracted into 2h with 1wt% sodium hydroxide at 90 DEG C, hot water carrying out washing treatment bark residue is used for fibril Change processing.
II. the bark residue handled well is impregnated into 24 hours (2wt%) in water, using ultra micron pulverizer by bark Crushing fibrillation is carried out, then carries out homogeneous under high pressure with high pressure homogenizer.Suspension after homogeneous is stood 24 hours, is made Solid matter settles down, and is finally separating suspension upper and lower level, is that lignin is wooden to obtain lower layer's solid matter, after dry Material.
In the present invention, B1 component and B2 component are added to the water and are dispersed with stirring up to B component, containing admittedly for dispersion liquid is 10 ~50wt%, preferably 30~45wt%.
In the present invention, component A isocyanates be poly methylene poly phenyl poly isocyanate and/or its derivative, preferably The polymethylene polyphenyl polyisocyanate cyanogen that NCO% is 29-32.8%, degree of functionality 2.9-3.3, viscosity are 150-250cp (25 DEG C) Acid esters and/or its derivative.Component A can be the Wannate series polyisocyanates of Wanhua Chemical Group Co., Ltd., For example, PM-100, PM-200, PM-400, PM-600, PM-700, CW20, CW30, PM300E, 9132FC.
In the present invention, the isocyanates gluing agent combination material mode of action are as follows: the silica dioxide granule of flexibility package into Enter to the gap of each spot gluing of isocyanates, rigid particle effectively fills support, while flexible double crown also can be wrapped up effectively Firmly fiber, unique double canopy structures can well resist violent stress variation, and lignin wood materials are to double crown layer dioxy The fiber of silicon carbide particle package carries out secondary capsulation and bridge joint, effectively forms secondary skeleton, further ensures enough Fiber is completely wrapped, therefore when engraving milling, will not occur engraving milling section hair under higher revolving speed and feeding speed The phenomenon that hair.It is meanwhile smaller because being affected by the external environment, additionally it is possible to guarantee its excellent dimensional stability.
It is a kind of that milling fiberboard is engraved without aldehyde using the isocyanates gluing agent combination material preparation.
Resin added when milling fiberboard is engraved in the present invention, described in preparation are as follows: component A 30-40kg/m3, B component (to contain admittedly Quality meter) 10-20kg/m3。
Moisture control when engraving milling fiberboard in the present invention, described in preparation after fiber drying is 7.8-10wt%.
In the present invention, the step of material preparation engraves milling fiberboard without aldehyde is combined with isocyanates gluing agent are as follows:
S1: Chip treatment process, first preheated feed bin the pre-heat treatment, preheating temperature are 90~98 DEG C to wood chip, cooker Steam pressure is 0.7~0.8MPa, and digestion time is 3~5min, and boiling temperature is 140~180 DEG C, is homogenized wood chip moisture content, Improve fiber separation efficiency and fiber separation uniformity；
S2: fiber preparation section, wood chip enter defibrator by belt type spiral, and abrasive disk space control is in≤0.28mm, fibre 18~20 ton/hours of yield of dimension separation, prepares the wood-fibred of 80~100 mesh；
S3: sizing process, the inlet that component A is pumped into blow line by sizing apply B component by another Glue is pumped into the inlet of blow-off pipe, and component A and B component are sprayed on fiber through high pressure nozzle, are uniformly mixed with fiber；
S4: drying process, after sizing, dry 7-10s, and moisture content of the raw material is controlled in 7.8-10wt%.
S5: sorting process, the foreign matters such as removal blob of viscose, coma, fibre bundle；
S6: process of mating formation, fiber, which passes through, carries out slab precompressed with the pressure of 10.15~11.35MPa after airflow pavement, and Edging is carried out to slab；
S7: hot pressing process, hot pressing temperature is at 230~160 DEG C, using five sections of hot pressing temperature areas, 0~40MPa of hot pressing pressure, 11.5~13.5s/mm of thermal ventilation；
S8: aftertreatment technology, cooling health 72h or more, sawing.
In the present invention, the pressure is gauge pressure.
The beneficial effects of the present invention are:
(1) effectively improve the fiberboard of isocyanates gluing agent manufacture engraves milling effect, after once engraving milling, engraves milling section Glabrous thorn does not need repeatedly to engrave milling and is able to satisfy production technology and appearance requirement.
(2) good dimensional stability is maintained, in dimensionally stable test, deformation of length is ± 0.4% hereinafter, thickness Deformation is below ± 0.51%；Simultaneously in the case where keeping other mechanical performances not lose, internal bond strength improves 10% Left and right.
(3) obtain the function admirable without formaldehyde engraves milling fiberboard without aldehyde.
Specific embodiment
The invention will now be further described with reference to specific embodiments, and examples are merely exemplary, not to the present invention Range constitute any restrictions.It will be understood by those skilled in the art that without departing from the spirit and scope of the invention may be used With the details and forms of the technical scheme of the invention are modified or replaced, these modifications and replacement each fall within present invention protection model It encloses.
Following embodiment and comparative example implement (12mm plate thickness) on medium density fibre board (MDF) tinuous production.
Primary raw material is as follows in embodiment and comparative example:
CW20: the mixture of polyfunctionality isocyanates and methyl diphenylene diisocyanate, NCO content 30.5- 32.0%, degree of functionality 3.1-3.3,25 DEG C of viscosity 150-250cp, Wanhua Chemical Group Co., Ltd.；
CW30: the mixture of polyfunctionality isocyanates and methyl diphenylene diisocyanate, NCO content 30.5- 32.0%, degree of functionality 3.1-3.3,25 DEG C of viscosity 150-250cp, Wanhua Chemical Group Co., Ltd.；
9132FC: polyfunctionality isocyanate derivates, NCO content 29.0-30.0%, degree of functionality 2.9-3.1,25 DEG C Viscosity 225cp, Wanhua Chemical Group Co., Ltd.；
Silica: chemical pure, Jinan Guo Bang Chemical Co., Ltd.；
3- (trimethoxy silicon propyl) dimethyl stearyl ammonium chloride: 64wt% methanol solution, Beijing lark prestige science and technology Co., Ltd；
3- (trimethoxy silicon propyl) dimethyl tetradecyl ammonium chloride: 64wt% methanol solution, Beijing lark prestige science and technology Co., Ltd；
3- (trimethoxy silicon propyl) dimethyl hexadecyl ammonium chloride: 64wt% methanol solution, Beijing lark prestige science and technology Co., Ltd；
Tetradecyl alchohol polyoxyethylene ether potassium sulfate: chemical pure, Beijing lark prestige Science and Technology Ltd.；
Hexadecanol polyoxyethylene ether potassium sulfate: chemical pure, Beijing lark prestige Science and Technology Ltd.；
Polyoxyethylene octadecanol potassium sulfate: chemical pure, Beijing lark prestige Science and Technology Ltd.；
Pine bark: technical pure, Guangzhou is raw to rise agriculture Co., Ltd；
Sodium hydroxide: chemical pure, Beijing lark prestige Science and Technology Ltd.；
Main instrument to be used in embodiment and comparative example:
Super grinder: DMS-07, Qingdao Lian Rui precision machinery Co., Ltd；
High pressure homogenizer: VMK163, Shanghai Jinzhu Machinery Equipment Co., Ltd.；
Hot press: 4 ruler continuous flat presses, German Dieffenbacher Co., Ltd；
Plate property and dimensional stability are tested according to the method for GB17657-2013 prescribed by standard；Knot in plate Close intensity, static bending strength, elasticity modulus and bond strength by High Speed Rail Testing Instruments Co., Ltd universal testing machine AI-7000S into Row detection.It is High Speed Rail Testing Instruments Co., Ltd GT7005 type constant temperature and moisture test that dimensional stability, which tests climatic chamber used, Case.Panel density is detected by the profile density detector DAX5000 of Gray's health Automatic Detection and Control equipment Co., Ltd.
Embodiment 1
1. prepared by adhesive B1 component
(1) interior crown grafting branch: suspension is obtained with 500kg water dispersion 100kg silica dioxide granule.Add it to 25L 3- In (trimethoxy silicon propyl) dimethyl stearyl ammonium chloride solution.Reaction 24 hours is stirred at room temperature in suspension, so After discard supernatant liquid, obtain it is interior hat cladding silica.
(2) it is preced with self assembly outside: preparing the tetradecyl alchohol polyoxyethylene ether potassium sulfate solution of 10.5wt% and adjusts PH and be 10.5.The silica that the interior hat being dispersed with stirring coats is placed in reaction kettle, adjusts to pH value ibid, 37.8kg ten is added Tetrol polyoxyethylene ether potassium sulfate solution reacts the progress that reacts fully for 24 hours at 70 DEG C, then removes solvent, gained is produced After object uses methanol and water washing respectively, dry 48h, removes residual solvent, obtains double crown layer silica composite wood at 100 DEG C Material.
2. prepared by adhesive B2 component
I. 100kg pine bark is extracted into 2h with 1wt% sodium hydroxide solution at 90 DEG C, hot water carrying out washing treatment bark is remaining Object is for fibrillation processing.
II. the bark residue handled well is immersed in water (2wt%) 24 hours, then uses ultra micron pulverizer Bark is subjected to crushing fibrillation, then carries out homogeneous 2h under the pressure of 208MPa using high pressure homogenizer.After homogeneous Suspension stands 24 hours, so that solid matter settles down, suspension upper and lower level is finally separating, to obtain lower layer's solids Matter is lignin wood materials after dry.
3. prepared by adhesive B component
By the B1 component of 40 mass parts, 60 mass parts B2 components are dissolved in 100 mass parts water, and 50wt% solid content is made B component.
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S1: Chip treatment: cutting wood material using drum chipper, is prepared into that length is 21-26mm, width is 15~20mm, the wood chip with a thickness of 3~4mm.Wood chip carries out pre-cooked under the conditions of being placed in 90~98 DEG C after washing, then in steam 0.7~0.8MPa of pressure, under conditions of 160~165 DEG C of temperature in cooker boiling 3 minutes；
S2: fiber preparation: wood chip enters defibrator by belt type spiral, and abrasive disk space is controlled in 0.28mm, fiber separation 18~20 ton/hours of yield, prepare the wood-fibred of 80~100 mesh；
S3: applying glue to fibers: the inlet that component A (ten thousand magnificent chemistry CW20) is pumped into blow line by sizing, by B Component is pumped into the inlet of blow-off pipe by another sizing, and component A and B component are sprayed on fiber through high pressure nozzle, with fibre Dimension is uniformly mixed；Component A resin added is 30kg/m3, B component (pure to contain admittedly) resin added is 11kg/m3。
S4: dry: dry 10.0s after sizing, fiber moisture is 8.5% after drying；
S5: sorting: the foreign matters such as removal blob of viscose, coma, fibre bundle；
S6: molding of mating formation: fiber, which passes through, carries out slab precompressed after machinery is mated formation with the pressure of 10.15~11.35MPa, and Edging is carried out to slab；
S7: plate hot pressing: continuous flat press first, second, third and fourth is set, the hot pressing temperature in 5th area is respectively 220-225 ℃,212-217℃,193-200℃,181-186℃,160-163℃.The hot pressing pressure for resetting corresponding the first to five area is 31.5~33.0MPa, 16.5~19.5MPa, 3.0~4.0MPa, 12.5~14.5MPa, 5.3~5.8MPa, after precompressed Slab is that 12s/mm carries out hot pressing in thermal ventilation；
S8: the plate after hot pressing plate post-processing: is placed in the indoor item of 20~30 DEG C of temperature, relative humidity 50~70% Constant temperature and humidity 72h under part carries out sanding by sander and polishing machine is polished, and obtains using sawing close in required Spend fibreboard product.
Panel density 775Kg/m3, proximal end, centre, distal end least density/averag density be respectively 91.5%, 90.8%, 91.3%.
The performance test of plate is carried out, test result is shown in Table 1.
Embodiment 2
The main preparation process of the present embodiment has following difference with embodiment 1, with embodiment 1:
1. prepared by adhesive B1 component
(1) interior crown grafting branch: suspension is obtained with 500kg water dispersion 100kg silica dioxide granule.Add it to 25L 3- In (trimethoxy silicon propyl) dimethyl stearyl ammonium chloride solution.Reaction 20 hours is stirred at room temperature in suspension, so After discard supernatant liquid, obtain it is interior hat cladding silica.
(2) being preced with self assembly outside: preparing the hexadecanol polyoxyethylene ether potassium sulfate solution of 10.5wt% and adjusting PH is 10. The silica that the interior hat being dispersed with stirring coats is placed in reaction kettle, adjusts to pH value ibid, 33.6kg hexadecanol is added Polyoxyethylene ether potassium sulfate solution, reaction 20h reacts fully progresss at 60 DEG C, then removes solvent, products therefrom is divided Yong not be after methanol and water washing, dry 48h, removes residual solvent, obtains double crown layer silicon dioxide composite material at 100 DEG C.
3. prepared by adhesive B component
By the B1 component of 50 mass parts, 50 mass parts B2 components are dissolved in 178 mass parts water, and 36wt% solid content is made B component.
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S3: applying glue to fibers: component A (ten thousand magnificent chemistry CW20) resin added is 31kg/m3, B component resin added (pure to contain admittedly) is 20kg/m3；
S4: fiber drying: fiber moisture is 8.8% after dry.
Panel density 772Kg/m3, proximal end, centre, distal end least density/averag density be respectively 91.3%, 90.8%, 91.5%.
The performance test of plate is carried out, detailed results are shown in Table 1.
Embodiment 3
The main preparation process of the present embodiment has following difference with embodiment 1, with embodiment 1:
1. prepared by adhesive B1 component
(1) interior crown grafting branch: suspension is obtained with 500kg water dispersion 100kg silica dioxide granule.Add it to 28L 3- In (trimethoxy silicon propyl) dimethyl hexadecyl ammonium chloride solution.Reaction 20 hours is stirred at room temperature in suspension, so After discard supernatant liquid, obtain it is interior hat cladding silica.
(2) being preced with self assembly outside: preparing the tetradecyl alchohol polyoxyethylene ether potassium sulfate solution of 10.5wt% and adjusting PH is 11. The silica that the interior hat being dispersed with stirring coats is placed in reaction kettle, adjusts to pH value ibid, 37.8kg tetradecyl alchohol is added Polyoxyethylene ether potassium sulfate solution, reaction 20h reacts fully progresss at 65 DEG C, then removes solvent, products therefrom is divided Yong not be after methanol and water washing, dry 48h, removes residual solvent, obtains double crown layer silicon dioxide composite material at 100 DEG C.
3. prepared by adhesive B component
By the B1 component of 60 mass parts, 40 mass parts B2 components are dissolved in 150 mass parts water, and 40wt% solid content is made B component.
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S3: applying glue to fibers: component A (ten thousand magnificent chemistry CW20) resin added is 38kg/m3, B component resin added (pure to contain admittedly) is 9.5kg/m3；
S4: fiber drying: fiber moisture is 9.3% after dry.
Panel density 777Kg/m3, proximal end, centre, distal end least density/averag density be respectively 89.3%, 90.1%, 89.9%.
The performance test of plate is carried out, detailed results are shown in Table 1.
Embodiment 4
The main preparation process of the present embodiment has following difference with embodiment 1, with embodiment 1:
1. prepared by adhesive B1 component
(1) interior crown grafting branch: suspension is obtained with 500kg water dispersion 100kg silica dioxide granule.Add it to 23L 3- In (trimethoxy silicon propyl) dimethyl tetradecyl ammonium chloride solution.Reaction 18h is stirred at room temperature in suspension, is then abandoned Supernatant is removed, the silica of interior hat cladding is obtained.
(2) it is preced with self assembly outside: preparing the tetradecyl alchohol polyoxyethylene ether potassium sulfate solution of 10.5wt% and adjusts PH and be 8.5.The silica that the interior hat being dispersed with stirring coats is placed in reaction kettle, adjusts to pH value ibid, 37.8kg ten is added Tetrol polyoxyethylene ether potassium sulfate solution, reaction 18h reacts fully progress at 50 DEG C, then removes solvent, gained is produced After object uses methanol and water washing respectively, dry 48h, removes residual solvent, obtains double crown layer silica composite wood at 100 DEG C Material.
3. prepared by adhesive B component
By the B1 component of 45 mass parts, 55 mass parts B2 components are dissolved in 233 mass parts water, and 30wt% solid content is made B component.
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S3: applying glue to fibers: component A (ten thousand magnificent chemistry 9132FC) resin added is 31kg/m3, B component resin added (pure to contain admittedly) For 10kg/m3；
S4: fiber drying: fiber moisture is 9.5% after dry；
S7: hot-forming: thermal ventilation 11.5s/mm.
Panel density 772Kg/m3, proximal end, centre, distal end least density/averag density be respectively 91.3%, 90.2%, 90.4%.
The performance test of plate is carried out, detailed results are shown in Table 1.
Embodiment 5
The main preparation process of the present embodiment has following difference with embodiment 1, with embodiment 1:
1. prepared by adhesive B1 component
(1) interior crown grafting branch: suspension is obtained with 500kg water dispersion 100kg silica dioxide granule.Add it to 23L 3- In (trimethoxy silicon propyl) dimethyl stearyl ammonium chloride solution.Reaction 18h is stirred at room temperature in suspension, is then abandoned Supernatant is removed, the silica of interior hat cladding is obtained.
(2) being preced with self assembly outside: preparing the polyoxyethylene octadecanol potassium sulfate solution of 10.5wt% and adjusting PH is 7. The silica that the interior hat being dispersed with stirring coats is placed in reaction kettle, adjusts to pH value ibid, 37.8kg octadecyl alcolol is added Polyoxyethylene ether potassium sulfate solution, reaction 18h reacts fully progresss at 55 DEG C, then removes solvent, products therefrom is divided Yong not be after methanol and water washing, dry 48h, removes residual solvent, obtains double crown layer silicon dioxide composite material at 100 DEG C.
3. prepared by adhesive B component
By the B1 component of 67 mass parts, 33 mass parts B2 components are dissolved in 426 mass parts water, and 19wt% solid content is made B component.
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S3: applying glue to fibers: component A (ten thousand magnificent chemistry CW30) resin added is 35kg/m3, B component resin added (pure to contain admittedly) is 16kg/m3；
S4: fiber drying: fiber moisture is 8.9% after dry.
Panel density 767Kg/m3, proximal end, centre, distal end least density/averag density be respectively 91.5%, 91%, 89.9%.
The performance test of plate is carried out, detailed results are shown in Table 1.
Embodiment 6
The main preparation process of the present embodiment has following difference with embodiment 1, with embodiment 1:
1. prepared by adhesive B1 component
(1) interior crown grafting branch: suspension is obtained with 500kg water dispersion 100kg silica dioxide granule.Add it to 23L 3- In (trimethoxy silicon propyl) dimethyl stearyl ammonium chloride solution.Reaction 16h is stirred at room temperature in suspension, is then abandoned Supernatant is removed, the silica of interior hat cladding is obtained.
(2) it is preced with self assembly outside: preparing the tetradecyl alchohol polyoxyethylene ether potassium sulfate solution of 10.5wt% and adjusts PH and be 9.5.The silica that the interior hat being dispersed with stirring coats is placed in reaction kettle, adjusts to pH value ibid, 37.8kg ten is added Tetrol polyoxyethylene ether potassium sulfate solution, reaction 16h reacts fully progress at 60 DEG C, then removes solvent, gained is produced After object uses methanol and water washing respectively, dry 48h, removes residual solvent, obtains double crown layer silica composite wood at 100 DEG C Material.
3. prepared by adhesive B component
By the B1 component of 32 mass parts, 68 mass parts B2 components are dissolved in 900 mass parts water, and 10wt% solid content is made B component.
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S3: applying glue to fibers: component A (ten thousand magnificent chemistry CW20) resin added is 33kg/m3, B component resin added (pure to contain admittedly) is 13.5kg/m3；
S4: fiber drying: fiber moisture is 7.5% after dry.
Panel density 773Kg/m3, proximal end, centre, distal end least density/averag density be respectively 91.0%, 88.5%, 87.6%.
The performance test of plate is carried out, detailed results are shown in Table 1.
Embodiment 7
The main preparation process of the present embodiment has following difference with embodiment 1, with embodiment 1:
1. prepared by adhesive B1 component
(1) interior crown grafting branch: suspension is obtained with 500kg water dispersion 100kg silica dioxide granule.Add it to 25L 3- In (trimethoxy silicon propyl) dimethyl stearyl ammonium chloride solution.Reaction 16h is stirred at room temperature in suspension, is then abandoned Supernatant is removed, the silica of interior hat cladding is obtained.
(2) being preced with self assembly outside: preparing the tetradecyl alchohol polyoxyethylene ether potassium sulfate solution of 10.5wt% and adjusting PH is 8. The silica that the interior hat being dispersed with stirring coats is placed in reaction kettle, adjusts to pH value ibid, 37.8kg tetradecyl alchohol is added Polyoxyethylene ether potassium sulfate solution, reaction 16h reacts fully progresss at 70 DEG C, then removes solvent, products therefrom is divided Yong not be after methanol and water washing, dry 48h, removes residual solvent, obtains double crown layer silicon dioxide composite material at 100 DEG C.
3. prepared by adhesive B component
By the B1 component of 37 mass parts, 63 mass parts B2 components are dissolved in 122 mass parts water, and 45wt% solid content is made B component.
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S3: applying glue to fibers: component A (ten thousand magnificent chemistry CW20) resin added is 37kg/m3, B component resin added (pure to contain admittedly) is 10.5kg/m3；
S4: fiber drying: fiber moisture is 7.9% after dry.
Panel density 794Kg/m3, proximal end, centre, distal end least density/averag density be respectively 87.5%, 90.7%, 89.9%.
The performance test of plate is carried out, detailed results are shown in Table 1.
Comparative example 1
The main preparation process of this comparative example has following difference compared with Example 1:
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S3: applying glue to fibers: B component is not added；
S4: fiber drying: fiber moisture is 9.4% after dry.
Panel density 769Kg/m3, proximal end, centre, distal end least density/averag density be respectively 88.7%, 90.3%, 91.5%.
The performance test of plate is carried out, detailed results are shown in Table 1.
Comparative example 2
The main preparation process of this comparative example has following difference compared with Example 1:
3. prepared by adhesive B component
100 mass parts B1 components are dissolved in 100 mass parts water, and the B component of 50wt% solid content is made.
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S3: applying glue to fibers: component A (ten thousand magnificent chemistry CW20) resin added is 33kg/m3, B component resin added (pure to contain admittedly) is 11kg/m3；
S4: fiber drying: fiber moisture is 8.3% after dry.
Panel density 775Kg/m3, proximal end, centre, distal end least density/averag density be respectively 91.1%, 90.2%, 90.5%.
The performance test of plate is carried out, detailed results are shown in Table 1.
Comparative example 3
The main preparation process of this comparative example has following difference compared with Example 1:
3. prepared by adhesive B component
100 mass parts B2 components are dissolved in 100 mass parts water, and the B component of 50wt% solid content is made；
4. combining material preparation with isocyanates gluing agent engraves milling fiberboard
S3: applying glue to fibers: component A (ten thousand magnificent chemistry CW20) resin added is 34kg/m3, B component resin added (pure to contain admittedly) is 11kg/m3；
S4: fiber drying: fiber moisture is 8.7% after dry.
Panel density 782Kg/m3, proximal end, centre, distal end least density/averag density be respectively 91.5%, 90.3%, 90.8%.
The performance test of plate is carried out, detailed results are shown in Table 1.
The comparison of 1 plate property of table
It compares after the above plate property can be seen that embodiment 1-7 addition component B, engraves a variety of grooved sections of milling and do not go out Existing scared phenomenon, dimensional stability significantly improve, and plate internal bond strength is slightly promoted.Comparative example 1 is not added with B component, engraves milling Section appearance is significantly scared, and groove surfaces are coarse.It is multiple containing only double crown layer silica in B component in comparative example 2 and 3 Also there is different degrees of scared phenomenon in actually engraving milling effect, illustrate in component in condensation material or lignin wood materials Under the synergistic effect of B1 and component B2, ideal effect can achieve.To sum up, using double crown silicon dioxide composite material and The fiberboard of the isocyanates gluing agent preparation of lignin wood materials, there is good engrave to mill performance and dimensional stability.

Claims (12)

1. one kind engraves milling fibre board use isocyanates gluing agent combination material, which is characterized in that the combination material is by component A and B component Composition, in which:
Component A is isocyanates, accounts for solid 60~80%, preferably 70~78% containing quality of combination material；
B component is the aqueous dispersions containing B1 and B2, accounts for solid 20~40%, preferably 22~30% containing quality of combination material admittedly containing；
The B1 is double crown layer silicon dioxide composite material, account for solid 30~70%, preferably 40 containing quality of B component dispersion liquid~ 60%；The B2 is lignin wood materials, accounts for solid 30~70%, preferably 40~60% containing quality of B component dispersion liquid.
2. adhesive combination material according to claim 1, which is characterized in that the interior hat of the B1 is organosilicon quaternary ammonium salt, excellent Select 3- (trimethoxy silicon propyl) dimethyl stearyl ammonium chloride, 3- (trimethoxy silica ethyl) dimethyl stearyl chlorination Ammonium, 3- (trimethoxy silicon propyl) dimethyl hexadecyl ammonium chloride and 3- (trimethoxy silicon propyl) dimethyl dodecyl base chlorine Change one of ammonium or a variety of, more preferable 3- (trimethoxy silicon propyl) dimethyl stearyl ammonium chloride.
3. adhesive combination material according to claim 1, which is characterized in that the outer hat of the B1 is fatty alcohol polyoxyethylene ether Sulfonate, the aliphatic alcohol polyoxyethylene sulfonate of preferred degree of polymerization n=10~20, more preferable Dodecyl Polyoxyethylene Ether sulfonic acid In potassium, tetradecyl alchohol polyoxyethylene ether potassium sulfonate, hexadecanol polyoxyethylene ether potassium sulfonate and polyoxyethylene octadecanol potassium sulfonate It is one or more, further preferred tetradecyl alchohol polyoxyethylene ether potassium sulfonate.
4. the combination of adhesive described in any one of -3 material according to claim 1, which is characterized in that the preparation method of the B1 includes Following steps:
(1) interior crown grafting branch: silicon-dioxide powdery being dispersed in water to obtain suspension, is added into interior hat solution, after reaction Liquid is discarded supernatant, the silica of interior crown grafting branch is obtained；
(2) it is preced with self assembly outside: preparing outer hat aqueous solution and adjusts pH value, the interior crown grafting branch silica dioxide granule being dispersed with stirring is set In reaction kettle, after being also adjusted to identical pH value, addition is outer to be preced with solution reaction, and by product washing, dry, removing residual is molten Agent obtains double crown layer silicon dioxide composite material.
5. adhesive combination material according to claim 4, which is characterized in that interior hat solution is the methanol of interior hat in step (1) Solution.
6. adhesive combination material according to claim 4, which is characterized in that reaction temperature is room temperature in step (1), when reaction Between 16-24h.
7. adhesive combination material according to claim 4, which is characterized in that reaction temperature is 50-70 DEG C in step (2), instead 16-24h between seasonable；PH value is adjusted to 7-11.
8. the combination of adhesive described in any one of -7 material according to claim 1, which is characterized in that B1 component and B2 component to be added It is dispersed with stirring into water up to B component, the solid of dispersion liquid contains for 10~50wt%, preferably 30~45wt%.
9. adhesive combination material according to claim 1, which is characterized in that component A isocyanates is polymethylene polyphenyl Polyisocyanates and/or its derivative, preferably NCO% is 29-32.8%, degree of functionality 2.9-3.3, viscosity 150-250cp The poly methylene poly phenyl poly isocyanate and/or its derivative of (25 DEG C).
10. a kind of combined using isocyanates gluing agent of any of claims 1-9 expects that engraving without aldehyde for preparation mills fibre Tie up plate.
11. according to claim 10 engrave milling fiberboard, which is characterized in that engrave resin added when milling fiberboard described in preparation Are as follows: component A 30-40kg/m3, B component (in terms of admittedly containing quality) 10-20kg/m3。
12. milling fiberboard is engraved described in 0 or 11 according to claim 1, which is characterized in that fiber when engraving milling fiberboard described in preparation Moisture control after drying is 7.8-10wt%.
CN201910546172.1A 2019-06-24 2019-06-24 Isocyanate adhesive composite material and routing fiberboard manufactured by same Active CN110272707B (en)

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CN110919810A (en) * 2019-12-05 2020-03-27 大亚人造板集团有限公司 CARB-grade low-swelling fiberboard manufacturing process and application thereof to high-mould-pressure floor base material
CN111673867A (en) * 2020-06-18 2020-09-18 广西三威林产工业有限公司 Combined additive for improving routing performance of formaldehyde-free plate, preparation method and application
CN113561585A (en) * 2021-06-29 2021-10-29 宁波职业技术学院 Decorative wood-plastic environment-friendly board and preparation method thereof
CN113601660A (en) * 2021-06-30 2021-11-05 万华化学集团股份有限公司 Water glass homogeneous isocyanate and aldehyde-free routing fiberboard prepared by same

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US20020031669A1 (en) * 1999-05-18 2002-03-14 Gang-Fung Chen Heat and radio frequency-curable two-pack soy protein-based polyurethane adhesive compositions
CN103665301A (en) * 2013-12-05 2014-03-26 天津工业大学 Method for preparing silica/lignin type polyurethane foam material
CN107760091A (en) * 2017-09-22 2018-03-06 国网山东省电力公司电力科学研究院 Wear-resisting fluorine silicon substrate super-amphiphobic coating of a kind of bottom surface integration and preparation method and application

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Publication number Priority date Publication date Assignee Title
CN110919810A (en) * 2019-12-05 2020-03-27 大亚人造板集团有限公司 CARB-grade low-swelling fiberboard manufacturing process and application thereof to high-mould-pressure floor base material
CN110919810B (en) * 2019-12-05 2022-08-12 大亚木业(江西)有限公司 CARB-grade low-swelling fiberboard manufacturing process and application thereof to high-mould-pressure floor base material
CN111673867A (en) * 2020-06-18 2020-09-18 广西三威林产工业有限公司 Combined additive for improving routing performance of formaldehyde-free plate, preparation method and application
CN113561585A (en) * 2021-06-29 2021-10-29 宁波职业技术学院 Decorative wood-plastic environment-friendly board and preparation method thereof
CN113601660A (en) * 2021-06-30 2021-11-05 万华化学集团股份有限公司 Water glass homogeneous isocyanate and aldehyde-free routing fiberboard prepared by same

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