CN109536108A - The moisture-curable polyurethane hot melt adhesive of high-strength high temperature-resistant and preparation method thereof for furniture surfacing - Google Patents
The moisture-curable polyurethane hot melt adhesive of high-strength high temperature-resistant and preparation method thereof for furniture surfacing Download PDFInfo
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- CN109536108A CN109536108A CN201811354283.4A CN201811354283A CN109536108A CN 109536108 A CN109536108 A CN 109536108A CN 201811354283 A CN201811354283 A CN 201811354283A CN 109536108 A CN109536108 A CN 109536108A
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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
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- 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
- C08G18/30—Low-molecular-weight compounds
- C08G18/302—Water
- C08G18/307—Atmospheric humidity
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- 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
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
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- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of moisture-curable polyurethane hot melt adhesive of high-strength high temperature-resistant for furniture surfacing for furniture surfacing high-strength high temperature-resistant moisture-curable polyurethane hot melt adhesive and preparation method thereof, using crystalline polyester dihydric alcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol, the pure and mild isocyanates of polyether polyols as raw material, reaction compounds after base polyurethane prepolymer for use as is made with addition resin and catalyst the hot melt adhesive；Viscosity of hot melt adhesive at a temperature of 130 DEG C is 10000~50000mPas, the open hour are 40s~60s, solid content 100%.The hot melt adhesive of the method for the present invention preparation mainly includes crystalline polyester, amorphous polyester, liquid polyesters, polyethers, the addition components such as resin and isocyanates, the hot melt adhesive has fabulous toughness, it is high for the surface linings such as leather adhesion strength, and there is good high temperature resistance, can be widely used for various material furniture surfacings and plate decoration.
Description
Technical field
The present invention relates to hot melt adhesive preparation field more particularly to a kind of moisturecurings for plane decorations such as furniture and plates
Polyurethane hot melt and preparation method thereof.
Background technique
Furniture surfacing is a kind of common furniture decoration method, and surface lining is in addition to also acting protection man while beauty
The effect of tool prevents furniture easily damaged by the erosion of external environment in long-term use.Although solvent type coats
Product has many advantages, such as that bonding is closely knit, secured, coating is good, but its solvent is understood during production and application as volatilizing in air,
Welding and the health for endangering production operator, therefore solvent product is gradually eliminated.Traditional hot-melt adhesive, such as EVA (second
Alkene-vinyl acetate copolymer resins) base-material hot melt adhesive, it is influenced by heat resistance is poor, cannot use and be higher than 120 in environment temperature
Under conditions of DEG C, and its adhesion strength is lower, limits its use scope.
In recent years, due to the excellent adhesion strength of moisture-curable polyurethane hot melt adhesive, good high temperature resistance and its environment
Friendly and obtain extensive research and development, be solid-state under room temperature its main feature is that not containing 100% solid content of solvent, heating
Be coated after melting, Molecular Design be it is isocyanate-terminated, can continue after cooling and solidifying and the water in environment
Divide and carry out reaction chain extension, further increases adhesion strength.Under normal circumstances, the higher initial adhesive strength of hot melt adhesive viscosity is better, but applies
Cloth performance is poor；The coating weight of low viscosity hot melt adhesive is smaller, and wettability is good, it is likely that initial adhesive strength is caused to decline.Well
Initial bonding strength be often difficult to meet simultaneously in practical applications with good coating performance.In addition, Research of Moisture-curable Polyurethane Hot-melt Adhesive,
When unreasonable on Molecular Design, it will appear surface lining when using under the high temperature conditions and separate showing for bulge with substrate
As affecting the performance and appearance of product.
Summary of the invention
Based on the problems of prior art, the object of the present invention is to provide a kind of high intensity for furniture surfacing is resistance to
Moisture-curable polyurethane hot melt adhesive of high temperature and preparation method thereof, just viscous and coating is good, attachment fastness is high after solidification, high temperature
Under the conditions of it is not blistering, can be widely applied to the veneers such as solid wood, composite board, different densities fiberboard and other steel and alloy plates
Bonding.
The purpose of the present invention is what is be achieved through the following technical solutions:
Embodiment of the present invention provides a kind of moisture-curable polyurethane hot melt adhesive of high-strength high temperature-resistant for furniture surfacing,
The hot melt adhesive is with crystalline polyester dihydric alcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol, the pure and mild isocyanic acid of polyether polyols
Ester is raw material, and reaction compounds after base polyurethane prepolymer for use as is made with addition resin and catalyst；The hot melt adhesive is in 130 DEG C of temperature
Under viscosity be 10000~50000mPas, the open hour are 40s~60s, solid content 100%.
Embodiment of the present invention also provides a kind of moisture cure urethanes hot melt of high-strength high temperature-resistant for furniture surfacing
The preparation method of glue is used to prepare moisture-curable polyurethane hot melt adhesive of the present invention, comprising the following steps:
Each raw material is taken by moisture-curable polyurethane hot melt adhesive formula of the present invention；
Each raw material is taken by moisture-curable polyurethane hot melt adhesive formula of the present invention；
Step 1, by crystalline polyester polyalcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol and polyether polyol
It is heated to 120 DEG C in vacuum reaction kettle to be uniformly mixed, while decompression dehydration 2h, is cooled to 60 DEG C later；
Step 2, under nitrogen protection, isocyanic acid is added in the reaction system of the vacuum reaction kettle of Xiang Suoshu step 1
Ester reacts 3h under the conditions of 85~95 DEG C, after to the reaction system vacuum deaerator half an hour system of the vacuum reaction kettle
Obtain base polyurethane prepolymer for use as；
Step 3, under nitrogen protection, the base polyurethane prepolymer for use as that the step 2 is prepared and addition resin, catalyst into
Row compounding, is prepared into reaction type polyurethane hot-melt adhesive, hot melt adhesive is transferred in aluminium foil bag, ripe after sealing under the conditions of 80 DEG C
Change 8h, obtains that viscosity at a temperature of 130 DEG C is 10000~50000mPas, the open hour are 40s~60s, solid content
For 100% moisture-curable polyurethane hot melt adhesive.
As seen from the above technical solution provided by the invention, the height provided in an embodiment of the present invention for furniture surfacing
Intensity moisture-curable polyurethane hot melt adhesive resistant to high temperature and preparation method thereof, it has the advantage that:
By by crystalline polyester polyalcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol and polyether polyol four
Kind polyalcohol combines in proportion, and different types of addition resin is cooperated to be used in mixed way, and different structure polyalcohol assigns hot melt adhesive not
With performance, crystalline segment contained by crystalline polyester polyalcohol assigns hot melt adhesive good polarization and intensity；Amorphous polyester
Polyalcohol improves the open hour of hot melt adhesive, increases the cohesive force of polyester；Liquid polyesters polyalcohol and polyether polyol are intermolecular
Interaction force it is small, improve the mobility and adhesion of hot melt adhesive；The opening of different types of resin moderated hot melt adhesive of addition
Time and initial bonding strength so that the hot melt adhesive has excellent initial bonding strength and coating, and do not contain any solvent, solid content
100%, environmentally friendly product, ambient moisture solidification, no drying process, quickly, viscous intensity is high eventually after solidification, for reality for solidification
The backing material plate of the materials such as wood, composite board, different densities fiberboard and other steel and alloy plates has good fitting fastness,
It is avoided that the phenomenon that bonding post-facing material separates bulge with substrate, heat resistance is good.
Specific embodiment
Below with reference to particular content of the invention, technical solution in the embodiment of the present invention is clearly and completely retouched
It states, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Based on the present invention
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts,
Belong to protection scope of the present invention.The content being not described in detail in the embodiment of the present invention belongs to professional and technical personnel in the field
The well known prior art.
The embodiment of the present invention provides a kind of moisture-curable polyurethane hot melt adhesive of high-strength high temperature-resistant for furniture surfacing, should
Hot melt adhesive is with crystalline polyester dihydric alcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol, the pure and mild isocyanates of polyether polyols
For raw material, reaction is compounded after base polyurethane prepolymer for use as is made with addition resin and catalyst；The hot melt adhesive is at a temperature of 130 DEG C
Viscosity be 10000~50000mPas, the open hour are 40s~60s, solid content 100%.
In above-mentioned polyurethane hot melt, it is raw materials used by weight are as follows:
25~35 parts of crystal type dihydric alcohol, 20~30 parts of amorphous polyester, 10~30 parts of liquid polyesters polyalcohol, polyethers are more
0~10 part of first alcohol, 10~30 parts of isocyanates, 20~30 parts of resin of addition and 0.01~0.1 part of catalyst.
In above-mentioned polyurethane hot melt, the molecular weight of crystalline polyester polyalcohol is 2000~4000, is closed using dihydric alcohol
At polyester polyol, polycarbonate glycol, any one of polycaprolactone diols., what dihydric alcohol therein synthesized gathers
Ester polyol is preferred are as follows: polyester polyol that adipic acid is synthesized with 1,4- butanediol, 1,6-HD are synthesized with neopentyl glycol
Any one of polyester polyol.Preferably, which has: dynacoll-
7360, dynacoll-7380, XCP-3500, CMA-44, CMA-3044, XCP-3000B, XCP-3000N, XCP-3000H etc..
In above-mentioned polyurethane hot melt, the molecular weight of amorphous polyester polyalcohol is 1000~5000.Preferably, the nothing is fixed
The available commercial prod of type polyester polyol has: F-39030, F-37070, dynacoll-7130, dynacoll-7150,
Dynacoll-7140 etc..
In above-mentioned polyurethane hot melt, the molecular weight of liquid polyesters polyalcohol is 2000~5000.Preferably, the liquid is poly-
The available commercial prod of ester polyol has: F37032, FJ-20030, F-37030, dynacoll-7250, dynacoll-
7230, XCP-2000IPA, XCP-2000NB etc..
In above-mentioned polyurethane hot melt, the molecular weight of polyether polyol is 1000~4000.Preferably, the polyether polyol
Useful commercial product have: DL-1000D, DL-2000D, DL-4000D etc..
In above-mentioned polyurethane hot melt, isocyanates is using at least one of MDI, TDI, HMDI, HDI, IPDI, PAPI；
The addition resin uses terpene resin, rosin resin, acrylic resin, Petropols, thermoplastic polyurethane tree
One or more of rouge；
The catalyst uses morpholinyl Anaesthetie Ether.
Hot melt adhesive of the invention, by by crystalline polyester polyalcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol
And four kinds of polyalcohols of polyether polyol combine in specific proportions, cooperate different types of addition resin to be used in mixed way, so that wherein
Different structure polyalcohol assign hot melt adhesive different performance, crystalline segment contained by crystalline polyester polyalcohol assigns hot melt adhesive
Good polarization and intensity；Amorphous polyester polyalcohol improves the open hour of hot melt adhesive, increases the cohesive force of polyester；Liquid
Polyester polyol and the intermolecular interaction force of polyether polyol are small, improve the mobility and adhesion of hot melt adhesive；It is not of the same race
The open hour of the resin moderated hot melt adhesive of addition of class and initial bonding strength, so that the hot melt adhesive has excellent initial bonding strength and coating
Property, it is avoided that the phenomenon that bonding post-facing material separates bulge with substrate, heat resistance is good.
The embodiment of the present invention also provides a kind of moisture-curable polyurethane hot melt adhesive of high-strength high temperature-resistant for furniture surfacing
Preparation method, be used to prepare above-mentioned moisture-curable polyurethane hot melt adhesive, comprising the following steps:
Each raw material is taken by above-mentioned moisture-curable polyurethane hot melt adhesive formula；
Step 1, by crystalline polyester polyalcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol and polyether polyol
It is heated to 120 DEG C in vacuum reaction kettle to be uniformly mixed, while decompression dehydration 2h, is cooled to 60 DEG C later；
Step 2, under nitrogen protection, isocyanic acid is added in the reaction system of the vacuum reaction kettle of Xiang Suoshu step 1
Ester reacts 3h under the conditions of 85~95 DEG C, after to the reaction system vacuum deaerator half an hour system of the vacuum reaction kettle
Obtain base polyurethane prepolymer for use as；
Step 3, under nitrogen protection, the base polyurethane prepolymer for use as that the step 2 is prepared and addition resin, catalyst into
Row compounding, is prepared into reaction type polyurethane hot-melt adhesive, hot melt adhesive is transferred in aluminium foil bag, ripe after sealing under the conditions of 80 DEG C
Change 8h, obtains that viscosity at a temperature of 130 DEG C is 10000~50000mPas, the open hour are 40s~60s, solid content
For 100% moisture-curable polyurethane hot melt adhesive.
In the step 1 of above-mentioned preparation method, while the vacuum degree of decompression dehydration 2h is more than or equal to 0.1MPa；
In the step 2 of the method, the vacuum degree that then uncooked hot melt adhesive is made in vacuum deaerator half an hour is greater than etc.
In 0.1MPa.
Moisture-curable polyurethane hot melt adhesive prepared by the present invention: having excellent initial bonding strength and coating, without containing any molten
Agent, solid content 100%, environmentally friendly product, ambient moisture solidification, no drying process, solidification quickly, after solidification are glued strong eventually
Degree is high, has well for the backing material plate of the materials such as solid wood, composite board, different densities fiberboard and other steel and alloy plates
Fitting fastness, heat resistance is good.
The embodiment of the present invention is specifically described in further detail below.
Embodiment 1:
The present embodiment provides a kind of moisture-curable polyurethane hot melt adhesive of high-strength high temperature-resistant for furniture surfacing, use with
The raw material of lower parts by weight is prepared:
Therein, rosin resin, acrylic resin, Petropols, thermoplastic polyurethane resin also can be used in addition resin
One or more of.
The preparation step of the moisture-curable polyurethane hot melt adhesive is as follows:
Step 1, crystalline polyester polyalcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol, polyether polyols are pure and mild
Resin is added, 120 DEG C are heated in vacuum reaction kettle and is uniformly mixed, while decompression dehydration 2h (vacuum degree >=
0.1MPa), 60 DEG C are then cooled to；
Step 2, under nitrogen protection, isocyanates is added in the reaction system described in step 1, in 85~95 DEG C of conditions
Lower reaction 3h, after in reaction kettle reaction system vacuum deaerator half an hour (vacuum degree >=0.1MPa) be made polyurethane
Performed polymer；
Step 3, under nitrogen protection, the base polyurethane prepolymer for use as prepared is compounded with addition resin, catalyst, is made
It is standby that the hot melt adhesive made is transferred in aluminium foil bag at reaction type polyurethane hot-melt adhesive, after sealing under the conditions of 80 DEG C, curing
8h obtains the moisture-curable polyurethane hot melt adhesive,.
The test related data of the moisture-curable polyurethane hot melt adhesive are as follows:
Viscosity (130 DEG C): 10000cp；
Initial bonding strength: 0.4N/mm；
Final peel strength: 1.2N/mm；
Open hour: 40s.
Comparative example 1:
This comparative example provides a kind of polyurethane hot melt, is done on the basis of the formula of polyurethane hot melt of the present invention
(the not prior art) out is only that the addition dosage of resin is different from the difference of embodiment 1, and the dosage for adding resin is more than
The dosage for the addition resin that the present invention limits is raw materials used as follows by weight:
The preparation method is the same as that of Example 1 for the hot melt adhesive, is not repeated herein.
The test related data of hot melt adhesive made from the present embodiment is as follows:
Viscosity (130 DEG C): 7000cp；
Initial bonding strength: 0.4N/mm；
Final peel strength: 0.6N/mm；
Open hour: 7min.
This comparative example 2 and the comparison of embodiment 1 are as can be seen that add the additive amount of resin due to increasing, more than this
After applying for the addition amount of resin limited, initial bonding strength does not have significant change, and final peel strength is but substantially reduced, in turn
Can determine: addition resin can improve glue initial bonding strength, but additive amount is held essentially constant afterwards to a certain extent, and due to it
Molecular weight is relatively low, and additive amount excessively will lead to the final peel strength of glue and be affected.
Comparative example 2:
This comparative example provides a kind of polyurethane hot melt, is done on the basis of the formula of polyurethane hot melt of the present invention
(the not prior art) out, the difference with embodiment 1 are only that the crystalline polyester dihydric alcohol selected outside restriction of the present invention,
It is raw materials used as follows by weight:
The preparation method is the same as that of Example 1 for the adhesive, is not repeated herein.
The test related data of hot melt adhesive made from the present embodiment is as follows:
Viscosity (130 DEG C): 8500cp；
Initial bonding strength: 0.5N/mm；
Final peel strength: 0.5N/mm；
Open hour: 35s.
This comparative example 2 and the comparison of embodiment 1 are as can be seen that due to using the crystal type for being different from the present invention and limiting
Polyester polyol, and crystalline polyester polyalcohol dynacoll-7381 crystallization rate is too fast, greatly shortens the open hour, glue
The activation time of water is resolute, and the adhesive property that will lead to the glue later period is affected.
Embodiment 2:
The present embodiment provides a kind of moisture-curable polyurethane hot melt adhesive of high-strength high temperature-resistant for furniture surfacing, use with
The raw material of lower parts by weight is prepared:
The present embodiment prepares the method for polyurethane hot melt with embodiment 1, is not repeated herein.
The test related data of polyurethane hot melt made from the present embodiment is as follows:
Viscosity (130 DEG C): 12000cp；
Initial bonding strength: 0.6N/mm；
Final peel strength: 1.8N/mm；
Open hour: 45s；
The present embodiment 2 reduces the dosage of polyether polyol for embodiment 1, and the open hour accordingly shorten, most
Whole peel strength increases, and improves for the adhesive property of surface lining.
Comparative example 3:
This comparative example provides a kind of polyurethane hot melt, is done on the basis of the formula of polyurethane hot melt of the present invention
(the not prior art) out, the difference with embodiment 2 are only that the dosage of amorphous polyester is more than that the nothing of the invention limited is fixed
The dosage of type polyester is raw materials used as follows by weight
The preparation method of the adhesive is not repeated herein with embodiment 2.
The test related data of adhesive made from this comparative example is as follows:
Viscosity (130 DEG C): 13000cp；
Initial bonding strength: 1.0N/mm；
Final peel strength: 0.6N/mm；
Open hour: 25s；
This comparative example 3 increases the additive amount of amorphous polyester polyalcohol for embodiment 2, hence it is evident that improves
The initial bonding strength of glue shortens the open hour, but the glass transition temperature Tg of amorphous polyester polyalcohol is very high, uses
Measuring bigger glue, surface lining is easy to be detached from backing material plate in the curing process, causes final peel strength to decline, be easy to cause
Degumming and poor permeability.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Within the technical scope of the present disclosure, any changes or substitutions that can be easily thought of by anyone skilled in the art,
It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of claims
Subject to enclosing.
Claims (10)
1. a kind of moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant for furniture surfacing, which is characterized in that the hot melt adhesive
It is original with crystalline polyester dihydric alcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol, the pure and mild isocyanates of polyether polyols
Material, reaction compound after base polyurethane prepolymer for use as is made with addition resin and catalyst；The hot melt adhesive is glutinous at a temperature of 130 DEG C
Degree is 10000~50000mPas, the open hour are 40s~60s, solid content 100%.
2. the moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant according to claim 1 for furniture surfacing, special
Sign is, in the hot melt adhesive, it is raw materials used by weight are as follows:
25~35 parts of crystal type dihydric alcohol, 20~30 parts of amorphous polyester, 10~30 parts of liquid polyesters polyalcohol, polyether polyol
0.1~10 part, 10~30 parts of isocyanates, 20~30 parts of resin of addition and 0.01~0.1 part of catalyst.
3. the moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant according to claim 1 or 2 for furniture surfacing,
Be characterized in that, the molecular weight of the crystalline polyester polyalcohol is 2000~4000, using the polyester polyol of dihydric alcohol synthesis,
Any one of polycarbonate glycol, polycaprolactone diols.
4. the moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant according to claim 3 for furniture surfacing, special
Sign is, the polyester polyol of the dihydric alcohol synthesis are as follows: polyester polyol that adipic acid is synthesized with 1,4-butanediol, 1,6- oneself
Any one of the polyester polyol that glycol is synthesized with neopentyl glycol.
5. the moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant according to claim 1 or 2 for furniture surfacing,
It is characterized in that, the molecular weight of the amorphous polyester polyalcohol is 1000~5000.
6. the moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant according to claim 1 or 2 for furniture surfacing,
It is characterized in that, the molecular weight of the liquid polyesters polyalcohol is 2000~5000.
7. the moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant according to claim 1 or 2 for furniture surfacing,
It is characterized in that, the molecular weight of the polyether polyol is 1000~4000.
8. the moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant according to claim 1 or 2 for furniture surfacing,
It is characterized in that, the isocyanates is using at least one of MDI, TDI, HMDI, HDI, IPDI, PAPI；
The addition resin is using in terpene resin, rosin resin, acrylic resin, Petropols, thermoplastic polyurethane resin
One or more；
The catalyst uses morpholinyl Anaesthetie Ether.
9. a kind of preparation method of the moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant for furniture surfacing, feature exist
In being used to prepare the described in any item moisture-curable polyurethane hot melt adhesives of claim 1 to 8, comprising the following steps:
Each raw material is taken by the described in any item moisture-curable polyurethane hot melt adhesive formulas of claim 1 to 8；
Step 1, by crystalline polyester polyalcohol, amorphous polyester polyalcohol, liquid polyesters polyalcohol and polyether polyol true
It is heated to 120 DEG C in empty reaction kettle to be uniformly mixed, while decompression dehydration 2h, is cooled to 60 DEG C later；
Step 2, under nitrogen protection, isocyanates is added in the reaction system of the vacuum reaction kettle of Xiang Suoshu step 1,
React 3h under the conditions of 85~95 DEG C, after poly- ammonia is made to the reaction system vacuum deaerator half an hour of the vacuum reaction kettle
Ester performed polymer；
Step 3, under nitrogen protection, the base polyurethane prepolymer for use as and addition resin, the catalyst step step 2) prepared
It is compounded, is prepared into reaction type polyurethane hot-melt adhesive, hot melt adhesive is transferred in aluminium foil bag, after sealing under the conditions of 80 DEG C,
8h is cured, the viscosity for obtaining at a temperature of 130 DEG C is 10000~50000mPas, the open hour are 40s~60s, admittedly contain
The moisture-curable polyurethane hot melt adhesive that amount is 100%.
10. the system of the moisture-curable polyurethane hot melt adhesive of the high-strength high temperature-resistant according to claim 9 for furniture surfacing
Preparation Method, which is characterized in that in the step 1 of the method, while the vacuum degree of decompression dehydration 2h is more than or equal to 0.1MPa；
In the step 2) of the method, the vacuum degree that then uncooked hot melt adhesive is made in vacuum deaerator half an hour is more than or equal to
0.1MPa。
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| CN110484188A (en) * | 2019-07-31 | 2019-11-22 | 东莞市澳中电子材料有限公司 | Reaction type polyurethane hot-melt adhesive and preparation method thereof with high initial bonding strength and low stringiness |
| CN110484189A (en) * | 2019-08-18 | 2019-11-22 | 上海回天新材料有限公司 | A kind of carpenter is smooth to use adhesive |
| CN111040715A (en) * | 2019-12-24 | 2020-04-21 | 烟台德邦科技有限公司 | Single-component reaction type polyurethane hot melt adhesive and preparation method thereof |
| CN111234759A (en) * | 2020-03-06 | 2020-06-05 | 上海都昱新材料科技有限公司 | Moisture-curing polyurethane hot melt adhesive and preparation method and application thereof |
| CN111978907A (en) * | 2020-09-01 | 2020-11-24 | 重庆韩拓科技有限公司 | Preparation and use methods of moisture-curing polyurethane edge sealing adhesive with high initial adhesion |
| CN112322248A (en) * | 2020-11-24 | 2021-02-05 | 上海都昱新材料科技有限公司 | PUR hot melt adhesive for composite board and preparation method thereof |
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| CN110373145A (en) * | 2019-08-18 | 2019-10-25 | 上海回天新材料有限公司 | A kind of carpenter's wallboard edge sealing cladding uses adhesive |
| CN110484189A (en) * | 2019-08-18 | 2019-11-22 | 上海回天新材料有限公司 | A kind of carpenter is smooth to use adhesive |
| CN111040715A (en) * | 2019-12-24 | 2020-04-21 | 烟台德邦科技有限公司 | Single-component reaction type polyurethane hot melt adhesive and preparation method thereof |
| CN111234759A (en) * | 2020-03-06 | 2020-06-05 | 上海都昱新材料科技有限公司 | Moisture-curing polyurethane hot melt adhesive and preparation method and application thereof |
| CN111978907A (en) * | 2020-09-01 | 2020-11-24 | 重庆韩拓科技有限公司 | Preparation and use methods of moisture-curing polyurethane edge sealing adhesive with high initial adhesion |
| CN114316873A (en) * | 2020-09-30 | 2022-04-12 | 上海紫丹印务有限公司 | Reactive hot melt adhesive for corrugated paper mounting and preparation method thereof |
| CN112322248A (en) * | 2020-11-24 | 2021-02-05 | 上海都昱新材料科技有限公司 | PUR hot melt adhesive for composite board and preparation method thereof |
| CN112552865A (en) * | 2020-12-30 | 2021-03-26 | 浙江枧洋高分子科技有限公司 | Reactive polyurethane hot melt adhesive for veneer decoration of sound-absorbing board and preparation method thereof |
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