CN111073580A - Environment-friendly modified polyurethane adhesive for furniture manufacturing and preparation method thereof - Google Patents
Environment-friendly modified polyurethane adhesive for furniture manufacturing and preparation method thereof Download PDFInfo
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- CN111073580A CN111073580A CN201911291820.XA CN201911291820A CN111073580A CN 111073580 A CN111073580 A CN 111073580A CN 201911291820 A CN201911291820 A CN 201911291820A CN 111073580 A CN111073580 A CN 111073580A
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/06—Polyurethanes from polyesters
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- 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
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
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- 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- 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
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
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- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
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- 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
- C08G18/48—Polyethers
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- 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
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
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- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/721—Two or more polyisocyanates not provided for in one single group C08G18/73 - C08G18/80
- C08G18/722—Combination of two or more aliphatic and/or cycloaliphatic polyisocyanates
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- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
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- 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
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/75—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic
- C08G18/758—Polyisocyanates or polyisothiocyanates cyclic cycloaliphatic containing two or more cycloaliphatic rings
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
- C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
- C08G18/7671—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups containing only one alkylene bisphenyl group
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- 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
- C09J175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
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- 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
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Abstract
The invention discloses an environment-friendly modified polyurethane adhesive for furniture manufacturing and a preparation method thereof, wherein the polyurethane adhesive is prepared from the following components, by mass, 12-25 parts of polyol, 2-6 parts of isocyanate, 6-10 parts of modified monomer, 30-70 parts of solvent, 20-30 parts of viscosity regulator, 0.01-0.03 part of catalyst, 0.1-0.5 part of chain extender, 0.01-0.05 part of initiator, 0.2-0.5 part of terminator, 0.2-0.5 part of cellosolve, and the solvent comprises butanone, ethyl acetate and dimethyl carbonate. The environment-friendly modified polyurethane adhesive for furniture manufacture has the advantages of good environment friendliness, high peel strength, wide application range and moderate price. The preparation method of the environment-friendly modified polyurethane adhesive for furniture manufacture has good production process operability and is suitable for being used in a factory site.
Description
Technical Field
The invention relates to the field of adhesives, in particular to an environment-friendly modified polyurethane adhesive for furniture manufacturing and a preparation method thereof.
Background
The adhesive has complex composition, various types and varieties and wide application fields and objects. The polyurethane adhesive is an adhesive containing urethane groups (-NHCOO-) and isocyanate groups (-NCO-) in a molecular chain. The polyurethane adhesive has the advantages of high production technical requirement, complex synthesis process, large selection of raw materials, multiple formulas, multiple varieties and wide performance variation range, and is widely applied to the fields of modern economy, national defense and science and technology.
The polyurethane adhesive contains various polar groups such as ester groups, ether bonds and carbamate groups and nonpolar groups such as polymethylene groups, has strong adhesion to the surfaces of most materials, can form hydrogen bonds among molecules, has large cohesive force, and has good adhesion to metal, rubber, plastic, wood, fabric and the like. The polyurethane adhesive modified by polar monomers has better surface wetting effect and higher polarity due to the addition of methacrylate group. The polyurethane prepared by the reaction is linear polyurethane with partial branching degree, and has high molecular weight and high crystallinity. The polyurethane has high polarity, is suitable for surfaces with different polarities, and can generate high bonding strength because the adhesive is in a solid state after the solvent is volatilized. Thus, such adhesives are generally high viscosity, low solids, high initial tack.
The traditional polyurethane adhesive contains 'three benzene' organic solvents (benzene, toluene and xylene) which are toxic and harmful to human bodies, and can release a large amount of irritant gases when in use, thereby polluting the environment. The environment-friendly modified polyurethane adhesive does not use aromatic solvents which are toxic to human bodies, meets the increasingly improved environmental protection index of China, meets the environmental protection requirements of foreign products of the same type, and also meets the requirements of sustainable development.
Disclosure of Invention
The technical problem is as follows: the invention aims to solve the technical problem of providing an environment-friendly modified polyurethane adhesive for furniture manufacturing and a preparation method thereof,
the technical scheme is as follows: in order to solve the technical problems, the invention provides the following technical scheme:
an environment-friendly modified polyurethane adhesive for furniture manufacture comprises polyol, a modified monomer, isocyanate, a solvent, a viscosity regulator, a catalyst, a chain extender, an initiator, a terminator and a cellosolve, and the environment-friendly modified polyurethane adhesive comprises the following components in parts by weight:
mass fraction of the components
Wherein the solvent comprises butanone, ethyl acetate and dimethyl carbonate.
Preferably, in the environment-friendly modified polyurethane adhesive for furniture manufacture, the solvent comprises the following components in parts by mass:
mass fraction of the components
10-30 parts of butanone
10-15 parts of ethyl acetate
10-35 parts of dimethyl carbonate.
Preferably, the polyester polyol comprises one or more of polyester polyol with molecular weight of 3000, polyester polyol with molecular weight of 2000 and polyether polyol with molecular weight of 1000.
Preferably, the isocyanate includes one or more of diphenylmethane diisocyanate (MDI), Hexamethylene Diisocyanate (HDI), and 4,4' -dicyclohexylmethane diisocyanate (HMDI).
Preferably, the modifying monomer is at least one of Methyl Methacrylate (MMA) and hydroxyethyl methacrylate (HEMA).
Preferably, the viscosity modifier is acetone.
Preferably, the catalyst is an organotin catalyst, and the organotin catalyst is dibutyltin dilaurate.
Preferably, the chain extender comprises one or a mixture of more of ethylene glycol, 1, 4-butanediol, 1, 3-butanediol, ethylenediamine, neopentyl glycol, diethanolamine and triethanolamine.
Preferably, the initiator is Benzoyl Peroxide (BPO).
Preferably, methanol and 2, 6-di-tert-butyl-4-methylphenol (BHT) are used as the terminator.
Preferably, ethylene glycol monomethyl ether is used as the cellosolve.
The invention also provides a preparation method of the environment-friendly modified polyurethane adhesive for furniture manufacture, which comprises the following steps:
(1) controlling the reaction temperature to be 80 ℃, sequentially adding the polyol, the modified monomer and the solvent into the reaction kettle, and uniformly mixing and stirring;
(2) controlling the reaction temperature to be 82-85 ℃, sequentially adding isocyanate and a catalyst into the reaction kettle, mixing and stirring uniformly, and reacting for 3-7 h;
(3) controlling the reaction temperature to be 82-85 ℃, adding a chain extender into the reaction kettle, and continuing to react for 2-4 hours;
(4) controlling the reaction temperature to be 82-85 ℃, adding an initiator into the reaction kettle, and continuing to react for 2-4 hours;
(5) controlling the reaction temperature to be 80-82 ℃, adding a terminator into the reaction kettle, and continuing to react for 1-2 hours;
(6) adding a cellosolve into the reaction kettle, and continuously reacting for 1-2 hours;
(7) controlling the reaction temperature below 50 ℃, adding a viscosity regulator into the reaction kettle, and discharging.
Preferably, in the step (1), the stirring speed is controlled to be 80 to 150 r/min.
Preferably, in the step (2), the stirring speed is controlled to be 90 to 150 r/min.
Preferably, in the step (3), the stirring speed is controlled to be 90 to 120 r/min.
Preferably, in the step (4), the stirring speed is controlled to be 90 to 120 r/min.
Preferably, in the step (5), the stirring speed is controlled to be 90 to 120 r/min.
Preferably, in the step (6), the stirring speed is controlled to be 90 to 120 r/min.
Preferably, in the step (7), the stirring speed is controlled to be 90 to 120 r/min.
Has the advantages that: compared with the prior art, the invention has the following advantages:
(1) the invention uses different types of isocyanate and polyol, and improves the application range of the obtained environment-friendly modified polyurethane adhesive for furniture manufacture.
(2) The invention provides a controllable reaction process, which confirms the feasibility of generating an environment-friendly modified polyurethane adhesive for furniture manufacture through continuous reaction at a lower temperature.
(3) The invention adopts mixed solvent, uses low-cost acetone, butanone, dimethyl carbonate and ethyl acetate, does not use toxic and harmful 'triphenyl' solvent (benzene, toluene and xylene), reduces pollution, improves the controllability of production, and reduces the comprehensive cost of the product.
The preparation method of the environment-friendly modified polyurethane adhesive for furniture manufacture has the advantages of clear route, mild conditions, good production continuity, safe operation and control and strong operability.
Detailed Description
The invention will be further illustrated with reference to the following specific examples. It should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of application of the present invention.
Example one
An environment-friendly modified polyurethane adhesive for furniture manufacture comprises polyester polyol, modified monomers, isocyanate, a solvent, a viscosity regulator, a catalyst, a chain extender, an initiator, a terminator and cellosolve, wherein,
the polyester polyol is polyester polyol with molecular weight of 3000;
the modified monomer adopts MMA;
the isocyanate adopts MDI;
the solvent comprises butanone, ethyl acetate and dimethyl carbonate;
the viscosity regulator adopts acetone;
the catalyst adopts an organic tin catalyst T-12;
the chain extender comprises ethylene glycol and 1, 4-butanediol;
the initiator adopts BPO;
the terminating agent adopts methanol and BHT. The contents of the components are shown in table 1.
The cellosolve adopts ethylene glycol monomethyl ether.
The preparation method of the environment-friendly modified polyurethane adhesive for furniture manufacture comprises the following steps:
(1) preheating a reaction kettle, controlling the reaction temperature to be 80 ℃, sequentially adding polyester polyol, a modified monomer and a solvent into the reaction kettle, controlling the stirring speed to be 80-150 r/min, and uniformly mixing and stirring;
(2) heating the reaction kettle, controlling the reaction temperature to be 82-85 ℃, sequentially adding isocyanate and a catalyst into the reaction kettle, controlling the stirring speed to be 90-150 r/min, uniformly mixing and stirring, and reacting for 3-7 h;
(3) keeping the reaction temperature at 82-85 ℃, stirring at 90-120 r/min, adding a chain extender into the reaction kettle, and continuing to react for 2-4 h;
(4) keeping the reaction temperature at 82-85 ℃, stirring at 90-120 r/min, adding an initiator into the reaction kettle, and continuing to react for 2-4 h;
(5) cooling the reaction kettle, controlling the reaction temperature to be 80-82 ℃, controlling the stirring speed to be 90-120 r/min, adding a terminator into the reaction kettle, and continuing to react for 1-2 hours;
(6) controlling the reaction temperature to be 80-82 ℃, controlling the stirring speed to be 90-120 r/min, adding cellosolve ethylene glycol monomethyl ether into the reaction kettle, and continuing to react for 1-2 h;
(7) and cooling the reaction kettle, controlling the reaction temperature to be below 50 ℃, controlling the stirring speed to be 90-120 r/min, adding a viscosity regulator into the reaction kettle, and discharging.
Example two
The difference between the second embodiment and the first embodiment is that the polyol comprises polyester polyol with molecular weight of 3000 and polyether polyol with molecular weight of 1000, and the content of each component is shown in table 1.
EXAMPLE III
Example three differs from example one in that the isocyanate includes HDI and HMDI, and the component contents are shown in table 1.
Example four
Example four differs from example one in that the chain extender comprises diethanolamine and triethanolamine, with the component levels shown in table 1.
EXAMPLE five
Example five differs from example one in that the polyester polyol comprises polyester polyol with molecular weight of 3000 and polyester polyol with molecular weight of 2000, the modified monomer is HEMA, and the content of each component is shown in Table 1.
EXAMPLE six
The difference between the sixth embodiment and the first embodiment is that the modified monomer is HEMA, the chain extender comprises diethanolamine and triethanolamine, and the content of each component is shown in table 1.
The environment-friendly modified polyurethane adhesive for furniture manufacture prepared in the first to sixth embodiments is subjected to the following item tests, and the results are shown in tables 2 to 3:
1. initial tack, reference standard: GB-19340-.
2. Peel strength, reference standard: GB-19340-.
3. Thermal aging resistance, reference standard: GB-19340-.
4. Shear strength, reference standard: GB-19340-.
5. Hazardous substance limits, reference standard: GB-19340-.
TABLE 1 parts by weight of the components of the environmentally friendly modified polyurethane adhesive for furniture manufacture described in the examples
TABLE 2 bonding Performance of environmentally friendly modified polyurethane adhesives for furniture manufacture as described in the examples
Table 3 example the limited amount of harmful substances contained in the environmentally friendly modified polyurethane adhesive for furniture manufacture
As can be seen from table 2: the environment-friendly modified polyurethane adhesive for furniture manufacture has an average initial viscosity of 2.43N/mm, an average peel strength of 4.55N/mm, an average thermal aging resistance of 4.27N/mm and an average shear strength of 2.25 MPa; the product obtained by the invention has all the performances superior to the national standard.
As can be seen from table 3: the environment-friendly modified polyurethane adhesive for furniture manufacturing is not detected in the detection of benzene content, toluene and xylene content, free toluene diisocyanate content, normal hexane and total halogenated hydrocarbon content, and the total volatile organic matter content is 722.8 g/L; the product obtained by the invention has all the performances superior to the national standard.
In conclusion, the environment-friendly modified polyurethane adhesive for furniture manufacture, disclosed by the invention, considers the reaction activities of aromatic isocyanate and aliphatic isocyanate, and proposes that the introduction of aromatic isocyanate is helpful for improving the peel strength. In addition, due to the adoption of the matching of the polyols with high and low molecular weights, the obtained adhesive has various performances, and is beneficial to meeting different application and processing requirements of downstream. Finally, the reaction mode of mixing and chain extending of various chain extenders is that the terminal molecular weight, cohesive strength, activity and polarity of the product are obviously improved on the premise of ensuring that the product with higher solid content is obtained. More importantly, the environment-friendly modified polyurethane adhesive for furniture manufacture does not adopt benzene, toluene, xylene and other 'triphenyl' solvents, but uses low-cost butanone, ethyl acetate and dimethyl carbonate as main solvents, thereby effectively reducing the occupational health hazards to first-line production personnel, reducing the environmental pollution and simultaneously reducing the comprehensive cost of products. The environment-friendly modified polyurethane adhesive product for furniture manufacture has the advantages of good production process adjustability, good operability, stable product test data and good comprehensive performance, and is suitable for factory production and field application and processing.
Various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The environment-friendly modified polyurethane adhesive for furniture manufacture is characterized by being prepared from the following components in parts by mass:
12 to 25 parts of a polyhydric alcohol,
2-6 parts of isocyanate,
6-10 parts of a modified monomer,
30-70 parts of a solvent, namely,
20-30 parts of a viscosity regulator,
0.01 to 0.03% of a catalyst,
0.1 to 0.5 weight percent of chain extender,
0.01 to 0.05 of an initiator,
0.2 to 0.5 parts of a terminator,
0.2-0.5% of cellosolve;
wherein the solvent comprises butanone, ethyl acetate and dimethyl carbonate.
2. The environment-friendly modified polyurethane adhesive for furniture manufacture as claimed in claim 1, wherein the solvent comprises the following components in parts by mass:
mass fraction of the components
10-30 parts of butanone
10-15 parts of ethyl acetate
10-35 parts of dimethyl carbonate.
3. The environmentally friendly modified polyurethane adhesive for furniture manufacture of claim 1, wherein the polyol comprises at least one of a polyester polyol having a molecular weight of 3000, a polyester polyol having a molecular weight of 2000, and a polyether polyol having a molecular weight of 1000.
4. The environmentally friendly modified polyurethane adhesive for furniture manufacture according to claim 1, wherein the isocyanate is a mixture of one or more of diphenylmethane diisocyanate (MDI), Hexamethylene Diisocyanate (HDI) and isophorone diisocyanate (IPDI).
5. The environmentally friendly modified polyurethane adhesive for furniture manufacture as claimed in claim 1, wherein the modifying monomer is a mixture of one or more of Methyl Methacrylate (MMA) and hydroxyethyl methacrylate (HEMA).
6. The environmentally friendly modified polyurethane adhesive for furniture manufacture of claim 1, wherein the viscosity modifier is acetone.
7. The environmentally friendly modified polyurethane adhesive for furniture manufacture of claim 1, wherein the catalyst is an organotin catalyst.
8. The environment-friendly modified polyurethane adhesive for furniture manufacture as claimed in claim 1, wherein the chain extender comprises one or a mixture of ethylene glycol, 1, 4-butanediol, 1, 3-butanediol, ethylenediamine, neopentyl glycol, diethanolamine and triethanolamine.
9. The environmentally modified polyurethane adhesive for furniture manufacture of claim 1, wherein the initiator is benzoyl oxide (BPO); the terminating agent is methanol and 2, 6-di-tert-butyl-4-methylphenol (BHT); the cellosolve is ethylene glycol monomethyl ether.
10. The preparation method of the environment-friendly modified polyurethane adhesive for furniture manufacture as claimed in any one of claims 1 to 9, characterized by comprising the following steps:
(1) controlling the reaction temperature to be 80 ℃, sequentially adding the polyol, the modified monomer and the solvent into the reaction kettle, and uniformly mixing and stirring;
(2) controlling the reaction temperature to be 82-85 ℃, sequentially adding isocyanate and a catalyst into the reaction kettle, mixing and stirring uniformly, and reacting for 3-7 h;
(3) controlling the reaction temperature to be 82-85 ℃, adding a chain extender into the reaction kettle, and continuing to react for 2-4 hours;
(4) controlling the reaction temperature to be 82-85 ℃, adding an initiator into the reaction kettle, and continuing to react for 2-4 hours;
(5) controlling the reaction temperature to be 80-82 ℃, adding a terminator into the reaction kettle, and continuing to react for 1-2 hours;
(6) adding a cellosolve into the reaction kettle, and continuously reacting for 1-2 hours;
(7) controlling the reaction temperature below 50 ℃, adding a viscosity regulator into the reaction kettle, and discharging.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911291820.XA CN111073580A (en) | 2019-12-16 | 2019-12-16 | Environment-friendly modified polyurethane adhesive for furniture manufacturing and preparation method thereof |
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| CN201911291820.XA CN111073580A (en) | 2019-12-16 | 2019-12-16 | Environment-friendly modified polyurethane adhesive for furniture manufacturing and preparation method thereof |
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| CN111073580A true CN111073580A (en) | 2020-04-28 |
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| CN201911291820.XA Withdrawn CN111073580A (en) | 2019-12-16 | 2019-12-16 | Environment-friendly modified polyurethane adhesive for furniture manufacturing and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116410687A (en) * | 2023-04-11 | 2023-07-11 | 旭川化学（苏州）有限公司 | Polyurethane adhesive with rigid structure and preparation method and application thereof |
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2019
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116410687A (en) * | 2023-04-11 | 2023-07-11 | 旭川化学（苏州）有限公司 | Polyurethane adhesive with rigid structure and preparation method and application thereof |
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Application publication date: 20200428 |