CN106700011A - Preparation and use method of polyurethane hot melt adhesive with strong initial adhesion force - Google Patents
Preparation and use method of polyurethane hot melt adhesive with strong initial adhesion force Download PDFInfo
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- CN106700011A CN106700011A CN201710071645.8A CN201710071645A CN106700011A CN 106700011 A CN106700011 A CN 106700011A CN 201710071645 A CN201710071645 A CN 201710071645A CN 106700011 A CN106700011 A CN 106700011A
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- Prior art keywords
- hot melt
- preparation
- parts
- polyurethane hot
- reaction
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Classifications
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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
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
-
- 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
-
- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
-
- 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
- C08G2170/00—Compositions for adhesives
- C08G2170/20—Compositions for hot melt adhesives
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention relates to a preparation and use method of polyurethane hot melt adhesive with strong initial adhesion force, which can solve the problem of insufficient initial adhesion force of moisture-curing polyurethane hot melt adhesive at existing market. The preparation and use method comprises the following steps of adding a potential curing agent into the traditional moisture-curing polyurethane hot melt adhesive, producing active hydrogen group which reacts with isocyanate group in polyurethane, and quickly forming initial curing. The preparation and use method has the advantages that the initial adhesion force in the use process of the hot melt adhesive is greatly increased, and the preparation and use method is suitable for the field of production of hot melt adhesives.
Description
Technical field
It is a kind of strong polyurethane of initial bond power more specifically the present invention relates to the preparation field of polyurethane hot melt
The preparation and application of PUR.
Background technology
PUR is a kind of important adhesive, is at normal temperatures solid, and being heated under uniform temperature to flow, shape
Into the liquid with certain stickiness, for the bonding in production and living to object, with easily preservation, nontoxic pollution-free etc. is excellent
Point.
The reaction type polyurethane of the moisture-curable that existing market uses（PUR single moisture-curable form) is generally, it lacks
Fall into obvious, if product initial bond advocates to be cooled and solidified by physics, cause initial adhesion force not high, easily cause glued
Thing displacement or alice.Or need to keep pushing down glued article for a long time, cause product largely to overstock and the large quantities of wastes of instrument.
Occur on the market containing light-cured type moisture reaction type polyurethane adhesive, the product can solve above-mentioned asking
Topic, but it is transparent material to require that then material must have one side, could form premature cure.
The content of the invention
In order to solve the above problems, realize that polyurethane adhesive forms premature cure on common sticky material, the present invention is proposed
A kind of preparation and application of the preparation and application of the strong polyurethane hot melt of initial bond power, can have strong in the early stage
Bonding force, and realize moisture-curable in the later stage.Its concrete technical scheme is as follows：
A kind of preparation and application of the strong polyurethane hot melt of initial bond power, in parts by mass, including polyalcohol 60-85
Part, multicomponent isocyanate 10-30 parts, latent curing agent 3-16 parts, preparation method is as follows：
Step one, by polyalcohol 70-85 parts of addition reactor, be dehydrated 1-2 hours, 100-120 DEG C of reaction temperature, reaction pressure
It is -0.0950 to -0.0850MPa, after dehydration is finished, is cooled to less than 80 DEG C；
Step 2, by multicomponent isocyanate 10-20 parts add walk reactor in, inflated with nitrogen or vacuumize reaction 1.5-2.5 hours,
90-100 DEG C of reaction temperature, is cooled to less than 90 DEG C after the completion of reaction；
Step 3, will in latent curing agent 3-16 parts of addition reactor, stir 20-50 minute, then deaeration discharge, sealing preserve.
Further, polyalcohol be 2000 including molecular weight and degree of functionality be 2 polypropylene glycol, molecular weight be 3000
One kind or mixing in polybutyleneadipate.
Further, multicomponent isocyanate is methyl diphenylene diisocyanate, toluene di-isocyanate(TDI), hexa-methylene two
One kind in isocyanates, hydrogenation methylenebis phenyl isocyanate, IPDI.
Further, latent curing agent is closing amine.
Further, the PUR application method for being produced by the process in the present invention：When gluing is used, gluing temperature
It is 80 DEG C to spend, and surface temperature is heated to 120 DEG C to 200 DEG C, minute-pressure 1 minute, natural cooling after gluing.
Beneficial effects of the present invention：Closing amine is added in reaction type polyurethane hot-melt adhesive production process, closing amine can be
Rapid release allows it containing the active hydrogen-based that can be reacted with the isocyanate groups in moisture-curable polyurethane under uniform temperature
Premature cure is quickly formed, to greatly improve the adhesion of early stage.
Specific embodiment
For that can enterOneStep understands feature of the invention, technological means and the specific purposes for being reached, function, with reference to
Embodiment is described in further detail to the present invention.
Embodiment 1
40 parts of polypropylene glycols and 40 parts of polybutyleneadipates are added in reactor, 110 DEG C, -0.095MPa vacuum dehydrations
1hr.Less than 80 DEG C, plus methyl diphenylene diisocyanate are cooled to, 13.04 parts, 90-100 DEG C of reaction 2hr, course of reaction is taken out
Vacuum protection, is cooled to 80 DEG C, seals up and closes 4.8 parts of amine, stir 30min, temperature control below 80 DEG C, deaeration, plastic emitting, sealed bundle
Dress.
Embodiment 2
40 parts of polypropylene glycols and 40 parts of polybutyleneadipates are added in reactor, 110 DEG C, -0.095MPa vacuum dehydrations
1hr.Less than 80 DEG C, plus methyl diphenylene diisocyanate are cooled to, 13.04 parts, 90-100 DEG C of reaction 2hr, course of reaction is taken out
Vacuum protection, is cooled to 80 DEG C, seals up and closes 6.4 parts of amine, stir 30min, temperature control below 80 DEG C, deaeration, plastic emitting, sealed bundle
Dress.
Embodiment 3
40 parts of polypropylene glycols and 40 parts of polybutyleneadipates are added in reactor, 110 DEG C, -0.095MPa vacuum dehydrations
1hr.Less than 80 DEG C, plus methyl diphenylene diisocyanate are cooled to, 13.04 parts, 90-100 DEG C of reaction 2hr, course of reaction is taken out
Vacuum protection, is cooled to 80 DEG C, seals up and closes 8 parts of amine, stirs 30min, and below 80 DEG C, deaeration, plastic emitting is packed temperature control.
Comparative example
40 parts of polypropylene glycols and 40 parts of polybutyleneadipates are added in reactor, 110 DEG C, -0.095MPa vacuum dehydrations
1hr.Less than 80 DEG C, plus methyl diphenylene diisocyanate are cooled to, 13.04 parts, 90-100 DEG C of reaction 2hr, course of reaction is taken out
Vacuum protection, is cooled to 80 DEG C, vacuum defoamation, airtight package.
The finished product to each embodiment carries out measure of merit below.
The data of following table carry out GB 2791-81 adhesive tests from each finished product CPU viscous to aluminium.
80 DEG C of gluing temperature, 25 DEG C of test temperature, after gluing cooling, 1min or so tests, as peel strength 1.
80 DEG C of gluing temperature, surface is heated up to 135 DEG C after gluing, minute-pressure 1min, after cooling, 1min or so tests, as
Peel strength 2.
80 DEG C of gluing temperature, surface is heated up to 135 DEG C after gluing, minute-pressure 1min, after cooling, room temperature maturation 24hr, test,
As peel strength 3.
Cause that polyurethane hot melt is compared using preparation method of the invention and application method as can be seen from the table original
Technology is comparative example, there is very big lifting,.
Polyurethane hot melt peel strength contrast table under different embodiments
| Testing standard GB 2791-81, unit N/mm | Peel strength 1 | Peel strength 2 | Peel strength 3 |
| Embodiment 1 | 0.2049 | 0.8674 | 2.8595 |
| Embodiment 2 | 0.2207 | 1.2120 | 3.0172 |
| Embodiment 3 | 0.2450 | 1.4896 | 3.0576 |
| Control sample | 0.1960 | 0.3038 | 2.8518 |
Analysis upper table data understand：
The embodiment product of closing amine is added than not adding the initial stage peel strength of closing amine embodiment product big.Heating temperature
When degree reaches 135 DEG C, the bonding force at its initial stage is preferred.
Adding closing amine can accelerate the process of early stage solidification.
Embodiment described above only expresses embodiments of the present invention, and its description is more specific and detailed, but can not
Therefore it is interpreted as the limitation to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art,
Without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection model of the invention
Enclose.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.
Claims (5)
1. the preparation and application of the strong polyurethane hot melt of a kind of initial bond power, it is characterised in that in parts by mass, bag
Polyalcohol 60-85 parts, multicomponent isocyanate 10-30 parts, latent curing agent 3-16 parts is included, preparation method is as follows：
Step one, by polyalcohol 70-85 parts of addition reactor, be dehydrated 1-2 hours, 100-120 DEG C of reaction temperature, reaction pressure
It is -0.0950 to -0.0850MPa, after dehydration is finished, is cooled to less than 80 DEG C；
Step 2, by multicomponent isocyanate 10-20 parts of addition reactor, inflated with nitrogen or vacuumize reaction 1.5-2.5 hours, instead
90-100 DEG C of temperature is answered, less than 90 DEG C are cooled to after the completion of reaction；
Step 3, will in latent curing agent 3-16 parts of addition reactor, stir 20-50 minute, then deaeration discharge, sealing preserve.
2. according to a kind of preparation and application of the strong polyurethane hot melt of the initial bond power in claim 1, its feature
It is that the polyalcohol is 2000 including molecular weight and degree of functionality is 2 polypropylene glycol, the polyadipate that molecular weight is 3000
One kind or mixing in butanediol.
3. according to a kind of preparation and application of the strong polyurethane hot melt of the initial bond power in claim 1, its feature
It is that the multicomponent isocyanate is methyl diphenylene diisocyanate, toluene di-isocyanate(TDI), the isocyanic acid of hexa-methylene two
One kind in ester, hydrogenation methylenebis phenyl isocyanate, IPDI.
4. according to a kind of preparation and application of the strong polyurethane hot melt of the initial bond power in claim 1, its feature
It is that the latent curing agent is closing amine.
5. the system of the strong polyurethane hot melt of a kind of initial bond power according to any claim in Claims 1-4
Standby and application method, it is characterised in that by the PUR application method that the process in the present invention is produced：Used in gluing
When, gluing temperature is 80 DEG C, and surface temperature is heated to 120 DEG C to 200 DEG C, minute-pressure 1 minute, natural cooling after gluing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071645.8A CN106700011A (en) | 2017-02-09 | 2017-02-09 | Preparation and use method of polyurethane hot melt adhesive with strong initial adhesion force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710071645.8A CN106700011A (en) | 2017-02-09 | 2017-02-09 | Preparation and use method of polyurethane hot melt adhesive with strong initial adhesion force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106700011A true CN106700011A (en) | 2017-05-24 |
Family
ID=58910399
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710071645.8A Pending CN106700011A (en) | 2017-02-09 | 2017-02-09 | Preparation and use method of polyurethane hot melt adhesive with strong initial adhesion force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106700011A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4182898A (en) * | 1978-01-20 | 1980-01-08 | Anderson Development Company | Stable and storable polyester-polyether co-prepolymers |
| US6011106A (en) * | 1997-09-29 | 2000-01-04 | Rohm And Haas Company | High-build low-sag aqueous coating composition |
| CN101541908A (en) * | 2006-11-17 | 2009-09-23 | Sika技术股份公司 | Moisture-curing hot-melt adhesive compound containing polyaldimine |
| CN101687775A (en) * | 2007-07-16 | 2010-03-31 | Sika技术股份公司 | Aldimines and compositions comprising aldamine |
-
2017
- 2017-02-09 CN CN201710071645.8A patent/CN106700011A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4182898A (en) * | 1978-01-20 | 1980-01-08 | Anderson Development Company | Stable and storable polyester-polyether co-prepolymers |
| US6011106A (en) * | 1997-09-29 | 2000-01-04 | Rohm And Haas Company | High-build low-sag aqueous coating composition |
| CN101541908A (en) * | 2006-11-17 | 2009-09-23 | Sika技术股份公司 | Moisture-curing hot-melt adhesive compound containing polyaldimine |
| CN101687775A (en) * | 2007-07-16 | 2010-03-31 | Sika技术股份公司 | Aldimines and compositions comprising aldamine |
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| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170524 |
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| RJ01 | Rejection of invention patent application after publication |