CN106065301A - A kind of anti-gaping of joints hot pressing veneer overlay glue stick and preparation method - Google Patents
A kind of anti-gaping of joints hot pressing veneer overlay glue stick and preparation method Download PDFInfo
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- CN106065301A CN106065301A CN201610403855.8A CN201610403855A CN106065301A CN 106065301 A CN106065301 A CN 106065301A CN 201610403855 A CN201610403855 A CN 201610403855A CN 106065301 A CN106065301 A CN 106065301A
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- 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
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
- C09J151/06—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F261/00—Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00
- C08F261/02—Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00 on to polymers of unsaturated alcohols
- C08F261/04—Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group C08F16/00 on to polymers of unsaturated alcohols on to polymers of vinyl alcohol
-
- 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
- C09J11/08—Macromolecular additives
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Veneer Processing And Manufacture Of Plywood (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of anti-gaping of joints hot pressing veneer overlay glue stick and preparation method, its main component includes water, polyvinyl alcohol, defoamer F681, sodium bicarbonate, Ammonium persulfate., vinylacetate, methacrylic acid, chain extender, self-cross linking monomer, firming agent, catalyst, crosslinked starch, adhesion promoter, TXIB plasticizer and BIOBAN ULTRABIT preservative.The present invention utilizes chain extender to increase emulsion particle molecular weight in the preparation, the chain tra nsfer impacts on molecular weight such as minimizing system chain free basal orientation initiator, reaction system, then in copolymer emulsion, add the mixing of the auxiliary agent such as hydrazides, Fructus Hordei Germinatus maltose, finally prepare a kind of hot pressing veneer overlay glue stick, solve ordinary hot pressed wood skin overlay glue stick at veneer seam crossing problem of Cracking, improve product quality.
Description
Technical field
The present invention relates to adhesive technology of preparing, particularly relate to a kind of anti-gaping of joints hot pressing veneer overlay glue stick and system
Preparation Method.
Background technology
Along with being continuously increased of Wood consumption, imbalance between supply and demand becomes increasingly conspicuous.Accelerate development timber conservation and alternative, to full
The foot market demand, suppression forest is super fells within quotas, keeps ecological balance, promotes forest reserves sustainable use, have important meaning
Justice.Veneer as the optimal substitute products of log, Shi Shun city and go out.Veneer is that a kind of wood sheet with rare tree characteristic is thin
Type facing or surface lining, major part seeds all can make veneer.It is strong that natural veneer has the most honest fragrance of timber, texture
Strong, its special and irregular native texture has the extremely miraculous and artistic charm of wonderful workmanship excelling nature.Natural veneer is widely used:
Thin skin is for thick china, leatheroid and the production of non-woven fabrics skin；Pachydermia is used for furniture making, veneer parquets, composite floor board plate note face.
High-grade natural veneer can be saved the energy in field application such as household decoration industry, save cost.Can be in furniture make, at thin wood
Directly post decoration veneer on work plate, particieboard, medium density fibre board (MDF), hardboard, replace decorative panel to use, along with China
The saltatory of furniture manufacturing industry and decorations industry increases, and wood tegument veener technique produces increased popularity, the development of veneer industry
Advance by leaps and bounds especially.Development veneer industry, has complied with country's political affairs about " develop a circular economy, build a conservation-minded society " just
Plan, prospect is inestimable.
For realizing the bonding of veneer and base material, needing to use special adhesive, traditional hot-pressed veneer is gluing
Agent, mainly with urea-formaldehyde resin adhesive for primary bond base material, adds the stirrings such as ammonium chloride, flour, calcium carbonate, Pulvis Talci all during use
Even, at a temperature of 130 DEG C, carry out veneer hot pressing cladding veneer, about 5 minutes hot-press solidifying time.This kind of wood tegument veener adhesive
In-convenience in use, hot pressing temperature is too high, and energy consumption is big, and hot pressing time is long, there is Form aldehyde release during processing and later stage use,
Pollute environment, serious harm user healthy.Polyvinyl acetate emulsion is used for wood tegument veener, has environmental protection, intensity
The performance such as higher, easy to use, but common vinylacetate adhesive there will be out at splicing seam crossing when wood tegument veener
Split phenomenon, affect product quality.To this end, develop a kind of one-component, easy to use, power consumption of polymer processing is low, the anti-of formaldehydeless release connects
Seam cracking hot-pressed veneer adhesive has important economic benefit and social benefit.
Summary of the invention
For the problems referred to above, the present invention devises a kind of anti-gaping of joints hot pressing veneer overlay glue stick, with water for dispersion
Medium, one-component, easy to use, power consumption of polymer processing is low, formaldehydeless release, and at veneer seam crossing substantially without cracking existing
As.
For achieving the above object, the present invention is by the following technical solutions:
A kind of anti-gaping of joints hot pressing veneer overlay glue stick, the component composition of each composition and parts by weight is as follows:
Described vinyl alcohol is that in PVA2488, PVA1788, one or both are formed by the mixing of any proportioning.
Described chain extender is Polyethylene Glycol (400) diacrylate, and self-cross linking monomer is N-hydroxyethyl acrylamide.
Described firming agent is unifor, and catalyst is six nitric hydrate aluminum, and crosslinked starch can be Nanjing, Wuxi
The product that tower starch company limited provides, adhesion promoter is Fructus Hordei Germinatus maltose.
The preparation method of anti-gaping of joints hot pressing veneer overlay glue stick comprises the steps:
A, the Ammonium persulfate. of 0.1-0.12 weight portion is dissolved in 1.9-2.28 weight parts water, obtains 2.0-2.4 weight portion
Ammonium persulfate aqueous solution；
B, by the vinylacetate of 28.74-29.67 weight portion, the methacrylic acid of 0.5-0.8 parts by weight, 0.2-0.4
Polyethylene Glycol (400) diacrylate of weight portion and the N-hydroxyethyl acrylamide mixing and stirring of 0.8-1.0 weight portion,
It is made into the mix monomer of 30.24-31.87 weight portion；
C, in reactor add 48.7-43.24 weight portion water, 0.1-0.12 measures the defoamer F681,0.1-of part
The sodium bicarbonate of 0.12 weight portion, starts stirring, adds the polyvinyl alcohol of 5.0-5.5 weight portion, is warming up to 90 DEG C-92 DEG C insulations
50-60 minute, polyethylene dissolving alcohol.Then cool to 73 DEG C, add the vinylacetate of 1.26-1.33 weight portion, stirring breast
After changing 5 minutes, add the ammonium persulfate aqueous solution of 1.0-1.2 weight portion step a preparation, be incubated 20 minutes at 78 DEG C；
After device the most to be condensed is without backflow, start to be simultaneously added dropwise the preparation of step b 30.24-31.87 weight portion mix monomer and
The ammonium persulfate aqueous solution of 0.8-0.96 weight portion step a preparation, time for adding 4.0 hours；
E. monomer adds and reacts 20 minutes again, is warming up to 85 DEG C, adds the over cure of the step a preparation of 0.2-0.24 weight portion
Acid aqueous ammonium, after being incubated 60 minutes, is cooled to less than 50 DEG C.Add the unifor of 0.5-0.7 weight portion, 0.3-
Six nitric hydrate aluminum of 0.5 weight portion, Nanjing, Wuxi tower crosslinked starch of 10.0-12.0 weight portion, the wheat of 1.0-1.2 weight portion
Bud maltose, the TXIB plasticizer of 0.7-0.9 weight portion, the BIOBAN ULTRABIT preservative of 0.1-0.12 weight portion, stirs 30
Minute mix homogeneously, evacuation discharging obtains crack resistence hot pressing veneer overlay glue stick finished product.
The invention has the beneficial effects as follows:
1, chain extender Polyethylene Glycol (400) diacrylate ester molecular structure there are two double bonds, can in copolymerization process
To play crane span structure effect raising molecular weight product, thus improve intensity；On the other hand, the ethylene oxide chain in molecular structure has
Autoemulsification, reduces additional emulsifying agent and uses；
2, Fructus Hordei Germinatus maltose has good initial bonding strength, it is achieved rapid link during product laminating, has polyhydroxy in molecular structure
Structure, by forming the active force raising adhesive strengths such as hydrogen chain, dipole moment between base material；
3, the one during crosslinked starch is modified starch.With starch as raw material, with phosphorus oxychloride, sodium trimetaphosphate, oneself two
Acid, hexametaphosphate are that starch is cross-linked by cross-linking agent.The alcoholic extract hydroxyl group of crosslinked starch starch molecule with containing binary or polynary
The chemical reagent reaction of functional group, makes to join together to present the cancellated starch of hyperspace between the hydroxyl of different starch molecule
Derivant；In copolymer emulsion, add crosslinked starch simultaneously, not only reduce cost, and 90 DEG C-110 DEG C be heating and curing
Time form self-crosslinking structure, in this temperature moment gelatinizing, greatly increase bonding strength, shorten the hardening time of adhesive,
Reduce equipment energy consumption, improve glued membrane rigidity；
4, six nitric hydrate aluminum are as lewis acid catalyst, catalysis unifor and multiple functional group in emulsion particle
Crosslink solidification, promote product to eventually form harder film, make film-strength be more than veneer seam crossing due to moisture evaporation generation
Contraction power, it is to avoid cracking.
Detailed description of the invention
Below in conjunction with specific embodiment, the preparation method of the embodiment of the present invention is described in detail.
Embodiment one total amount=1000kg
Production technology:
A, 1kg Ammonium persulfate. is dissolved in 19kg water, obtains 20kg ammonium persulfate aqueous solution；
B, by 287.4kg vinylacetate, 5kg methacrylic acid, 2kg Polyethylene Glycol (400) diacrylate and 8kgN-
Hydroxyethyl acrylamide mixing and stirring, is made into 302.4kg mix monomer；
C, in reactor add 487kg water, 1kg defoamer F681,1kg sodium bicarbonate, start stirring, add
40kgPVA2488,10kgPVA1788, be warming up to 90 DEG C and be incubated 50 minutes, polyethylene dissolving alcohol.Then cool to 73 DEG C, add
12.6kg vinylacetate, stirring and emulsifying, after 5 minutes, adds the ammonium persulfate aqueous solution of 10kg step a preparation, 78 DEG C of insulations
20 minutes；
After device the most to be condensed is without backflow, starts to be simultaneously added dropwise the 302.4kg mix monomer of step b preparation and 8kg step a is joined
The ammonium persulfate aqueous solution of system, time for adding 4.0 hours；
E. monomer adds and reacts 20 minutes again, is warming up to 85 DEG C, adds the ammonium persulfate aqueous solution of 2kg step a preparation, protects
Temperature, after 60 minutes, is cooled to less than 50 DEG C.Add 5kg unifor, 3kg six nitric hydrate aluminum, 100kg Wuxi Jin Lingta
Crosslinked starch, 10kg Fructus Hordei Germinatus maltose, 7kgTXIB plasticizer, 1kg preservative BIOBAN ULTRABIT, stirs mixing in 30 minutes all
Even, evacuation discharging obtains crack resistence hot pressing veneer overlay glue stick finished product.
Embodiment two total amounts=1000kg
Production technology:
A, 1.1kg Ammonium persulfate. is dissolved in 20.9kg water, obtains 22kg ammonium persulfate aqueous solution；
B, by 292.1kg vinylacetate, 6kg methacrylic acid, 3kg Polyethylene Glycol (400) diacrylate and 9kgN-
Hydroxyethyl acrylamide mixing and stirring, is made into 310.1kg mix monomer；
C, in reactor add 459.7kg water, 1.1kg defoamer F681,1.1kg sodium bicarbonate, start stirring, add
35kgPVA2488,18kgPVA1788, be warming up to 91 DEG C and be incubated 55 minutes, polyethylene dissolving alcohol.Then cool to 73 DEG C, add
12.9kg vinylacetate, stirring and emulsifying, after 5 minutes, adds the ammonium persulfate aqueous solution of 11kg step a preparation, 78 DEG C of insulations
20 minutes；
After device the most to be condensed is without backflow, start to be simultaneously added dropwise 310.1kg mix monomer and 8.8kg step a of the preparation of step b
The ammonium persulfate aqueous solution of preparation, time for adding 4.0 hours；
E. monomer adds and reacts 20 minutes again, is warming up to 85 DEG C, adds the ammonium persulfate aqueous solution of 2.2kg step a preparation,
After being incubated 60 minutes, it is cooled to less than 50 DEG C.Add 6kg unifor, 4kg six nitric hydrate aluminum, Nanjing, 110kg Wuxi
Tower crosslinked starch, 11kg Fructus Hordei Germinatus maltose, 8kgTXIB plasticizer, 1.1kg preservative BIOBAN ULTRABIT, stirs 30 minutes and mixes
Closing uniformly, evacuation discharging obtains crack resistence hot pressing veneer overlay glue stick finished product.
Embodiment three total amounts=1000kg
Production technology:
A, 1.2kg Ammonium persulfate. is dissolved in 22.8kg water, obtains 24kg ammonium persulfate aqueous solution；
B, by 296.7kg vinylacetate, 8kg methacrylic acid, 4kg Polyethylene Glycol (400) diacrylate and
10kgN-hydroxyethyl acrylamide mixing and stirring, is made into 318.7kg mix monomer；
C, in reactor add 432.4kg water, 1.2kg defoamer F681,1.2kg sodium bicarbonate, start stirring, add
35kgPVA2488,20kgPVA1788, be warming up to 92 DEG C and be incubated 60 minutes, polyethylene dissolving alcohol.Then cool to 73 DEG C, add
13.3kg vinylacetate, stirring and emulsifying, after 5 minutes, adds the ammonium persulfate aqueous solution of 12kg step a preparation, 78 DEG C of insulations
20 minutes；
After device the most to be condensed is without backflow, start to be simultaneously added dropwise 318.7kg mix monomer and 9.6kg step a of the preparation of step b
The ammonium persulfate aqueous solution of preparation, time for adding 4.0 hours；
E. monomer adds and reacts 20 minutes again, is warming up to 85 DEG C, adds the ammonium persulfate aqueous solution of 2.4kg step a preparation,
After being incubated 60 minutes, it is cooled to less than 50 DEG C.Add 7kg unifor, 5kg six nitric hydrate aluminum, Nanjing, 120kg Wuxi
Tower crosslinked starch, 12kg Fructus Hordei Germinatus maltose, 9kgTXIB plasticizer, 1.2kg preservative BIOBAN ULTRABIT, stirs 30 minutes and mixes
Closing uniformly, evacuation discharging obtains crack resistence hot pressing veneer overlay glue stick finished product.
1 one kinds of table anti-gaping of joints hot pressing veneer overlay glue stick contrasts
Claims (5)
1. an anti-gaping of joints hot pressing veneer overlay glue stick, it is characterised in that include that the component of following parts by weight forms:
。
A kind of anti-gaping of joints hot pressing veneer overlay glue stick the most as claimed in claim 1, it is characterised in that: described polyethylene
Alcohol is that in PVA2488, PVA1788, one or both are formed by the mixing of any proportioning.
A kind of anti-gaping of joints hot pressing veneer overlay glue stick the most as claimed in claim 1, it is characterised in that: described chain extender
Can be Polyethylene Glycol (400) diacrylate, self-cross linking monomer be N-hydroxyethyl acrylamide.
A kind of anti-gaping of joints hot pressing veneer overlay glue stick the most as claimed in claim 1, it is characterised in that: described firming agent
For unifor, catalyst is six nitric hydrate aluminum, and adhesion promoter is Fructus Hordei Germinatus maltose.
5. the preparation method of the anti-gaping of joints hot pressing veneer overlay glue stick described in a claim 1, it is characterised in that should
Method comprises the steps:
A, the Ammonium persulfate. of 0.1-0.12 weight portion is dissolved in 1.9-2.28 weight parts water, obtains 2.0-2.4 weight portion over cure
Acid aqueous ammonium；
B, by the vinylacetate of 28.74-29.67 weight portion, the methacrylic acid of 0.5-0.8 parts by weight, 0.2-0.4 weight
The chain extender of part and the self-cross linking monomer mixing and stirring of 0.8-1.0 weight portion, be made into the mixing of 30.24-31.87 weight portion
Monomer；
C, in reactor add 48.7-43.24 weight portion water, 0.1-0.12 measure part defoamer F681,0.1-0.12 weight
The sodium bicarbonate of amount part, starts stirring, adds the polyvinyl alcohol of 5.0-5.5 weight portion, is warming up to 90 DEG C-92 DEG C insulation 50-60
Minute, polyethylene dissolving alcohol.Then cool to 73 DEG C, add the vinylacetate of 1.26-1.33 weight portion, stirring and emulsifying 5 points
Zhong Hou, adds the ammonium persulfate aqueous solution of 1.0-1.2 weight portion step a preparation, is incubated 20 minutes at 78 DEG C；
After device the most to be condensed is without backflow, start to be simultaneously added dropwise 30.24-31.87 weight portion mix monomer and the 0.8-of the preparation of step b
The ammonium persulfate aqueous solution of 0.96 weight portion step a preparation, time for adding 4.0 hours；
E. monomer adds and reacts 20 minutes again, is warming up to 85 DEG C, adds the Ammonium persulfate. of the step a preparation of 0.2-0.24 weight portion
Aqueous solution, after being incubated 60 minutes, is cooled to less than 50 DEG C.Add the firming agent of 0.5-0.7 weight portion, 0.3-0.5 weight portion
Catalyst, the crosslinked starch of 10.0-12.0 weight portion, the adhesion promoter of 1.0-1.2 weight portion, 0.7-0.9 weight portion
TXIB plasticizer, the BIOBAN ULTRABIT preservative of 0.1-0.12 weight portion, stir 30 minutes mix homogeneously, evacuation goes out
Expect to obtain crack resistence hot pressing veneer overlay glue stick finished product.
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| CN201610403855.8A CN106065301A (en) | 2016-06-07 | 2016-06-07 | A kind of anti-gaping of joints hot pressing veneer overlay glue stick and preparation method |
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| CN201610403855.8A CN106065301A (en) | 2016-06-07 | 2016-06-07 | A kind of anti-gaping of joints hot pressing veneer overlay glue stick and preparation method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353852A (en) * | 2017-06-21 | 2017-11-17 | 顶立新材料科技有限公司 | A kind of preparation method of the polyvinyl acetate woodworking adhesive stick of long open hour |
| CN109355039A (en) * | 2018-09-06 | 2019-02-19 | 台州学院 | A kind of long open hour timber work glue based on malt maltose modified polyvinyl acetate emulsion |
| CN109370451A (en) * | 2018-10-19 | 2019-02-22 | 珠海鼎力工贸有限公司 | A kind of crack resistence splicing adhesive and preparation method thereof |
| CN109385238A (en) * | 2017-08-11 | 2019-02-26 | 广州原野实业有限公司 | A kind of quick hot-pressing environment friendly lagging glue |
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| CN102453455A (en) * | 2010-10-21 | 2012-05-16 | 金明 | Environment-friendly emulsion paint used for glued board |
| CN102585736A (en) * | 2012-01-12 | 2012-07-18 | 浙江顶立胶业有限公司 | Hot-pressing veneer adhesive and preparation method thereof |
| CN104140773A (en) * | 2014-07-31 | 2014-11-12 | 台州学院 | Repairable veneer adhesive and synthesizing method thereof |
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| CN102453455A (en) * | 2010-10-21 | 2012-05-16 | 金明 | Environment-friendly emulsion paint used for glued board |
| CN102031078A (en) * | 2010-12-01 | 2011-04-27 | 江南大学 | Starch-based wood adhesive and preparation method and application thereof |
| CN102585736A (en) * | 2012-01-12 | 2012-07-18 | 浙江顶立胶业有限公司 | Hot-pressing veneer adhesive and preparation method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107353852A (en) * | 2017-06-21 | 2017-11-17 | 顶立新材料科技有限公司 | A kind of preparation method of the polyvinyl acetate woodworking adhesive stick of long open hour |
| CN109385238A (en) * | 2017-08-11 | 2019-02-26 | 广州原野实业有限公司 | A kind of quick hot-pressing environment friendly lagging glue |
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