CN107722888A - A kind of based Wood Adhesives and preparation method thereof - Google Patents
A kind of based Wood Adhesives and preparation method thereof Download PDFInfo
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- CN107722888A CN107722888A CN201711016529.2A CN201711016529A CN107722888A CN 107722888 A CN107722888 A CN 107722888A CN 201711016529 A CN201711016529 A CN 201711016529A CN 107722888 A CN107722888 A CN 107722888A
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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
- C09J151/02—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 polysaccharides
-
- 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
- C08F251/00—Macromolecular compounds obtained by polymerising monomers on to polysaccharides or derivatives thereof
-
- 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
- C09J11/02—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
- C09J129/00—Adhesives based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Adhesives based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Adhesives based on derivatives of such polymers
- C09J129/02—Homopolymers or copolymers of unsaturated alcohols
- C09J129/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
-
- 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
- C09J151/003—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 macromolecular compounds obtained by reactions only involving unsaturated carbon-to-carbon bonds
-
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention relates to adhesive technical field.A kind of based Wood Adhesives of the present invention, include the component of following parts by weight：90 100 parts of cornstarch, 0.2 0.6 parts of ammonium persulfate initiator, 12 parts of potassium peroxydisulfate, 25 parts of borax, 10 20 parts of modified polyurethane, 1 10 parts of cellulose, 10 12 parts of acrylate, 35 parts of polyacrylamide, 400 600 parts of water, 80 100 parts of polyvinyl alcohol.Present invention also offers a kind of preparation method of based Wood Adhesives simultaneously：Cornstarch and water are mixed, then in agitating and heating, regulation system pH is 8 8.5, keeps 30min, polyvinyl alcohol, ammonium persulfate initiator and potassium peroxydisulfate are added, regulation pH is 34, keeps 1 2h, surplus stock is added, continues to stir 1 2h, cooling discharge.The present invention is good with water resistance, and bond effect is good, the advantage of long-term use of not discoloration.
Description
Technical field
The present invention relates to adhesive technical field, in particular to a kind of based Wood Adhesives and preparation method thereof.
Background technology
Since 21 century, domestic wood-based panel industry obtains unconventional fast development, increases by 22% every year, 2009 years
Wood-based plate yield ten thousand stere more than 8000, year consumption adhesive about 5,000,000, turns into the big country of world's Wood-based Panel Production first.
At present, adhesive main still Lauxite, phenolic resin, the melamino-formaldehyde tree that domestic and international wood-based plate manufacturing uses
Fat etc..Free formaldehyde content is higher in the adhesive of this type, toxic formaldehyde gas is slowly released during use, to human body
Damage.In order to reduce the discharge of formaldehyde gas, on the one hand domestic Research Thinking is the skill to original synthesis Lauxite
Art route is improved, it is intended to reduces the content of free formaldehyde.Such as add urea, melamine fomol catcher；The opposing party
Face attempts to inexpensive biomass poly hydroxyl compound and prepares based Wood Adhesives for raw material to substitute formaldehyde system adhesive.Institute
In the above-mentioned thinking of report, the cost of starch-based glue stick is relatively low, is a kind of natural poly hydroxyl compound for most having application prospect
Material.The national conditions of corrugated board packing box are widely used in reference to domestic starch adhesive, starch adhesive is by new
The MOLECULE DESIGN of destructurized starch and graft copolymerization after control oxidative cleavage, crosslinking, solve adhesion strength and water resistance, for artificial
Board industry is economically feasible.Over the past two years, there is the exploratory development of part wood-based plate starch adhesive
Or patent of invention.But the current starch-base timber adhesive from the point of view of result of study, however it remains water resistance is not strong, adhesive strength
The problem low, stability is poor etc..
Therefore need a kind of water resistance good at present, bond effect is good, the based Wood Adhesives of long-term use of not discoloration.
The content of the invention
In order to solve the above problems, there is provided a kind of water resistance is good, and bond effect is good, long-term use of not discoloration timber gluing
Agent, the present invention use following technical scheme：
A kind of based Wood Adhesives, include the component of following parts by weight：Cornstarch 90-100 parts, ammonium persulfate initiator 0.2-
0.6 part, potassium peroxydisulfate 1-2 parts, borax 2-5 parts, modified polyurethane 10-20 parts, cellulose 1-10 parts, acrylate 10-12 parts,
Polyacrylamide 3-5 parts, water 400-600 parts, polyvinyl alcohol 80-100 parts.
It is of the invention to use starch to save raw material as raw material and be advantageous to environmental protection, the present invention using starch and gathers in addition
The shared scheme of urethane, the bonding efficiency of adhesive can be improved, improves the adhesive strength of the present invention, and added in component
Cellulose, acrylate can improve the water-resistant capacity of adhesive.
Preferably, described modified polyurethane passes through following pretreatment：By the epoxy resin and 30- of 20-25 parts by weight
The base polyurethane prepolymer for use as of 35 parts by weight, is heated to reflux 5-6h under nitrogen protection after mixing.
Epoxy resin and base polyurethane prepolymer for use as processing are formed interpenetrating net polymer by the present invention, improve the machine of adhesive
Tool performance, the structural stability inside adhesive is improved, extend the service life of adhesive.
Preferably, described heating-up temperature is 70-85 DEG C.
Preferably, described base polyurethane prepolymer for use as is synthesized using following methods：By the polyethylene glycol of 90-100 parts by weight
55-60 DEG C is heated under agitation, is added toluene dicyanate 35-40 parts by weight, is then carried out heating response.
The method comprises the steps of firstly, preparing base polyurethane prepolymer for use as to prepare modified polyurethane by base polyurethane prepolymer for use as performed polymer, can
To improve the crosslinking degree of polyurethane and epoxy resin, so as to improve the mechanical performance of adhesive, the use effect of the present invention is improved
Fruit, reduce discoloration of the present invention.
Preferably, described reaction is carried out under nitrogen protective condition, the temperature of described heating response is 70-80
DEG C, reaction time 4-5h.
A kind of preparation method of based Wood Adhesives, comprises the following steps：
Cornstarch and water are mixed, then heats under agitation, is 8-8.5 with sodium hydroxide regulation system pH, is kept
30min, polyvinyl alcohol, ammonium persulfate initiator and potassium peroxydisulfate are added, it is 3-4 to add salt acid for adjusting pH, keeps 1-2h, then add
Enter surplus stock, continue to stir 1-2h, then cooling discharge.
Present invention employs above method to prepare adhesive, on the one hand improve adhesive weatherability and rate of drying and
And reduce the generation of side reaction by adjusting pH method, improve the using effect of adhesive.And pass through modified poly-
Urethane and starch are collectively as matrix, the starch filled mechanicalness that the present invention is strengthened in the inierpeneirating network structure of polyurethane
Can, and it is favorably improved the weatherability of the present invention.
Preferably, described stir speed (S.S.) is 800-900rpm.
Preferably, described heating-up temperature is 85-90 DEG C.
The beneficial effects of the present invention are：The present invention is good with water resistance, and bond effect is good, long-term use of not discoloration
Advantage.
Embodiment
The present invention is further explained with reference to specific implementation case：
Embodiment 1
A kind of based Wood Adhesives, include the component of following parts by weight：90 parts of cornstarch, 0.2 part of ammonium persulfate initiator, over cure
Sour 1 part of potassium, 2 parts of borax, 10 parts of modified polyurethane, 1 part of cellulose, 10 parts of acrylate, 3 parts of polyacrylamide, 400 parts of water,
80 parts of polyvinyl alcohol.
Wherein, described modified polyurethane passes through following pretreatment：By the epoxy resin of 25 parts by weight and 35 parts by weight
Base polyurethane prepolymer for use as, is heated to reflux 6h under nitrogen protection after mixing, described heating-up temperature is 85 DEG C.
Wherein, described base polyurethane prepolymer for use as is synthesized using following methods：By the polyethylene glycol of 100 parts by weight in stirring bar
60 DEG C are heated under part, adds the parts by weight of toluene dicyanate 40, then carries out heating response, described reaction is protected in nitrogen
Under the conditions of carry out, the temperature of described heating response is 80 DEG C, reaction time 5h.
A kind of preparation method of based Wood Adhesives, comprises the following steps：
Cornstarch and water are mixed, then heated under agitation, described stir speed (S.S.) is 800rpm, described heating
Temperature be 90 DEG C, with sodium hydroxide regulation system pH be 8.5, keep 30min, add polyvinyl alcohol, ammonium persulfate initiator and
Potassium peroxydisulfate, it is 4 to add salt acid for adjusting pH, keeps 2h, adds surplus stock, continues to stir 1h, then cooling discharge.
Embodiment 2
A kind of based Wood Adhesives, include the component of following parts by weight：100 parts of cornstarch, 0.6 part of ammonium persulfate initiator, mistake
2 parts of potassium sulfate, 5 parts of borax, 20 parts of modified polyurethane, 10 parts of cellulose, 12 parts of acrylate, 5 parts of polyacrylamide, water 600
Part, 100 parts of polyvinyl alcohol.
Wherein, described modified polyurethane passes through following pretreatment：By the epoxy resin of 25 parts by weight and 35 parts by weight
Base polyurethane prepolymer for use as, is heated to reflux 6h under nitrogen protection after mixing, described heating-up temperature is 85 DEG C.
Wherein, described base polyurethane prepolymer for use as is synthesized using following methods：By the polyethylene glycol of 100 parts by weight in stirring bar
60 DEG C are heated under part, adds the parts by weight of toluene dicyanate 40, then carries out heating response, described reaction is protected in nitrogen
Under the conditions of carry out, the temperature of described heating response is 80 DEG C, reaction time 5h.
A kind of preparation method of based Wood Adhesives, comprises the following steps：
Cornstarch and water are mixed, then heated under agitation, described stir speed (S.S.) is 800rpm, described heating
Temperature be 90 DEG C, with sodium hydroxide regulation system pH be 8.5, keep 30min, add polyvinyl alcohol, ammonium persulfate initiator and
Potassium peroxydisulfate, it is 4 to add salt acid for adjusting pH, keeps 2h, adds surplus stock, continues to stir 1h, then cooling discharge.
Embodiment 3
A kind of based Wood Adhesives, include the component of following parts by weight：95 parts of cornstarch, 0.4 part of ammonium persulfate initiator, over cure
Sour 1 part of potassium, 3 parts of borax, 15 parts of modified polyurethane, 5 parts of cellulose, 12 parts of acrylate, 4 parts of polyacrylamide, 500 parts of water,
90 parts of polyvinyl alcohol.
Wherein, described modified polyurethane passes through following pretreatment：By the epoxy resin of 25 parts by weight and 35 parts by weight
Base polyurethane prepolymer for use as, is heated to reflux 6h under nitrogen protection after mixing, described heating-up temperature is 85 DEG C.
Wherein, described base polyurethane prepolymer for use as is synthesized using following methods：By the polyethylene glycol of 100 parts by weight in stirring bar
60 DEG C are heated under part, adds the parts by weight of toluene dicyanate 40, then carries out heating response, described reaction is protected in nitrogen
Under the conditions of carry out, the temperature of described heating response is 80 DEG C, reaction time 5h.
A kind of preparation method of based Wood Adhesives, comprises the following steps：
Cornstarch and water are mixed, then heated under agitation, described stir speed (S.S.) is 800rpm, described heating
Temperature be 90 DEG C, with sodium hydroxide regulation system pH be 8.5, keep 30min, add polyvinyl alcohol, ammonium persulfate initiator and
Potassium peroxydisulfate, it is 4 to add salt acid for adjusting pH, keeps 2h, adds surplus stock, continues to stir 1h, then cooling discharge.
Embodiment 4
A kind of based Wood Adhesives, include the component of following parts by weight：92 parts of cornstarch, 0.2 part of ammonium persulfate initiator, over cure
Sour 1 part of potassium, 2 parts of borax, 12 parts of modified polyurethane, 4 parts of cellulose, 10 parts of acrylate, 3 parts of polyacrylamide, 500 parts of water,
80 parts of polyvinyl alcohol.
Wherein, described modified polyurethane passes through following pretreatment：By the epoxy resin of 25 parts by weight and 35 parts by weight
Base polyurethane prepolymer for use as, is heated to reflux 6h under nitrogen protection after mixing, described heating-up temperature is 85 DEG C.
Wherein, described base polyurethane prepolymer for use as is synthesized using following methods：By the polyethylene glycol of 100 parts by weight in stirring bar
60 DEG C are heated under part, adds the parts by weight of toluene dicyanate 40, then carries out heating response, described reaction is protected in nitrogen
Under the conditions of carry out, the temperature of described heating response is 80 DEG C, reaction time 5h.
A kind of preparation method of based Wood Adhesives, comprises the following steps：
Cornstarch and water are mixed, then heated under agitation, described stir speed (S.S.) is 800rpm, described heating
Temperature be 90 DEG C, with sodium hydroxide regulation system pH be 8.5, keep 30min, add polyvinyl alcohol, ammonium persulfate initiator and
Potassium peroxydisulfate, it is 4 to add salt acid for adjusting pH, keeps 2h, adds surplus stock, continues to stir 1h, then cooling discharge.
Embodiment 5
A kind of based Wood Adhesives, include the component of following parts by weight：98 parts of cornstarch, ammonium persulfate initiator 0.5, persulfuric acid
2 parts of potassium, 4 parts of borax, 18 parts of modified polyurethane, 8 parts of cellulose, 12 parts of acrylate, 4 parts of polyacrylamide, 500 parts of water, gather
100 parts of vinyl alcohol.
Wherein, described modified polyurethane passes through following pretreatment：By the epoxy resin of 25 parts by weight and 35 parts by weight
Base polyurethane prepolymer for use as, is heated to reflux 6h under nitrogen protection after mixing, described heating-up temperature is 85 DEG C.
Wherein, described base polyurethane prepolymer for use as is synthesized using following methods：By the polyethylene glycol of 100 parts by weight in stirring bar
60 DEG C are heated under part, adds the parts by weight of toluene dicyanate 40, then carries out heating response, described reaction is protected in nitrogen
Under the conditions of carry out, the temperature of described heating response is 80 DEG C, reaction time 5h.
A kind of preparation method of based Wood Adhesives, comprises the following steps：
Cornstarch and water are mixed, then heated under agitation, described stir speed (S.S.) is 800rpm, described heating
Temperature be 90 DEG C, with sodium hydroxide regulation system pH be 8.5, keep 30min, add polyvinyl alcohol, ammonium persulfate initiator and
Potassium peroxydisulfate, it is 4 to add salt acid for adjusting pH, keeps 2h, adds surplus stock, continues to stir 1h, then cooling discharge.
The preferred embodiment of the present invention 2 is detected below, using the AR1000 rheometers from TA instrument companies 25
Viscosity is measured at DEG C.For measurement, 2cm sheet material geometry and 200 microns of gap are used.The shear rate of application is
16s-1.The viscosity for obtaining embodiments of the invention 3 is 256Pas., and it is strong by the shearing of detection embodiments of the invention 3
Spend for 7.04MPa, there is good mechanical performance, and the present invention it is long-term use of after discoloration does not occur, have good
Weatherability.
Claims (8)
1. a kind of based Wood Adhesives, it is characterised in that include the component of following parts by weight：Cornstarch 90-100 parts, persulfuric acid
Ammonium initiator 0.2-0.6 parts, potassium peroxydisulfate 1-2 parts, borax 2-5 parts, modified polyurethane 10-20 parts, cellulose 1-10 parts, third
Olefin(e) acid ester 10-12 parts, polyacrylamide 3-5 parts, water 400-600 parts, polyvinyl alcohol 80-100 parts.
2. based Wood Adhesives according to claim 1, it is characterised in that described modified polyurethane passes through following pre- place
Reason：By the epoxy resin of 20-25 parts by weight and the base polyurethane prepolymer for use as of 30-35 parts by weight, add under nitrogen protection after mixing
Heat backflow 5-6h.
A kind of 3. based Wood Adhesives according to claim 2, it is characterised in that：Described heating-up temperature is 70-85 DEG C.
4. a kind of based Wood Adhesives according to claim 3, it is characterised in that described base polyurethane prepolymer for use as is using following
Method synthesizes：The polyethylene glycol of 90-100 parts by weight is heated to 55-60 DEG C under agitation, adds toluene dicyanate
35-40 parts by weight, then carry out heating response.
A kind of 5. based Wood Adhesives according to claim 4, it is characterised in that：Described reaction is under nitrogen protective condition
Carry out, the temperature of described heating response is 70-80 DEG C, reaction time 4-5h.
6. the preparation method of a kind of based Wood Adhesives according to one of claim 1-5, it is characterised in that including following step
Suddenly：
Cornstarch and water are mixed, then heats under agitation, is 8-8.5 with sodium hydroxide regulation system pH, is kept
30min, polyvinyl alcohol, ammonium persulfate initiator and potassium peroxydisulfate are added, it is 3-4 to add salt acid for adjusting pH, keeps 1-2h, then add
Enter surplus stock, continue to stir 1-2h, then cooling discharge.
A kind of 7. preparation method of based Wood Adhesives according to claim 6, it is characterised in that：Described stir speed (S.S.) is
800-900rpm.
A kind of 8. preparation method of based Wood Adhesives according to claim 6, it is characterised in that：Described heating-up temperature is
85-90 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711016529.2A CN107722888A (en) | 2017-10-25 | 2017-10-25 | A kind of based Wood Adhesives and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201711016529.2A CN107722888A (en) | 2017-10-25 | 2017-10-25 | A kind of based Wood Adhesives and preparation method thereof |
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| CN107722888A true CN107722888A (en) | 2018-02-23 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114907806A (en) * | 2022-03-30 | 2022-08-16 | 上海中南建筑材料有限公司 | Plant adhesive for artificial board and preparation method thereof |
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Application publication date: 20180223 |