CN107459621A - Epoxide modified aqueous polyurethane binding material of a kind of ultra-soft and preparation method thereof - Google Patents
Epoxide modified aqueous polyurethane binding material of a kind of ultra-soft and preparation method thereof Download PDFInfo
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- CN107459621A CN107459621A CN201710710195.2A CN201710710195A CN107459621A CN 107459621 A CN107459621 A CN 107459621A CN 201710710195 A CN201710710195 A CN 201710710195A CN 107459621 A CN107459621 A CN 107459621A
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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
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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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
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
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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
- C08G18/4804—Two or more polyethers of different physical or chemical nature
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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
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
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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
- C08G18/58—Epoxy resins
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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
- C08G18/70—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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- 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
- C08G18/70—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
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/146—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes characterised by the macromolecular diols used
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N3/00—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof
- D06N3/12—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins
- D06N3/14—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes
- D06N3/147—Artificial leather, oilcloth or other material obtained by covering fibrous webs with macromolecular material, e.g. resins, rubber or derivatives thereof with macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. gelatine proteins with polyurethanes characterised by the isocyanates used
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/10—Properties of the materials having mechanical properties
- D06N2209/103—Resistant to mechanical forces, e.g. shock, impact, puncture, flexion, shear, compression, tear
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1607—Degradability
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1642—Hardnes
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- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2209/00—Properties of the materials
- D06N2209/16—Properties of the materials having other properties
- D06N2209/1664—Releasability
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- D06N—WALL, FLOOR, OR LIKE COVERING MATERIALS, e.g. LINOLEUM, OILCLOTH, ARTIFICIAL LEATHER, ROOFING FELT, CONSISTING OF A FIBROUS WEB COATED WITH A LAYER OF MACROMOLECULAR MATERIAL; FLEXIBLE SHEET MATERIAL NOT OTHERWISE PROVIDED FOR
- D06N2211/00—Specially adapted uses
- D06N2211/12—Decorative or sun protection articles
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
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- Synthetic Leather, Interior Materials Or Flexible Sheet Materials (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The present invention relates to a kind of epoxide modified aqueous polyurethane binding material of ultra-soft and preparation method, it is made up of each component of following proportioning：The parts by weight of polypropylene glycol PPG 20 30, the parts by weight of PTMG 30 50, the parts by weight of epoxy resin 5 10, the parts by weight of isocyanates 20 30, the parts by weight of hydrophilic chain extender 36, the parts by weight of diamine chain stretching agent 35, the parts by weight of salt forming agent 26.The aqueous polyurethane binding material that the ultra-soft of the present invention is epoxide modified has extremely soft feel, hydrolysis, low-temperature flex resistance, and adhesion strength high.The special veneer that can be used for clothing leather, belongs to use for synthetic leather leading portion environment-friendly materials.
Description
Technical field
The present invention relates to synthetic leather field, in particular it relates to which a kind of ultra-soft of ecological synthetic leather veneer is epoxide modified
Aqueous polyurethane binding material, present invention simultaneously relates to the preparation method of the aqueous polyurethane binding material.
Background technology
Synthetic leather is to simulate the Nomenclature Composition and Structure of Complexes of natural leather (see leather) and as the plastic products of its substitute material.Ecology is closed
Finished leather is because its value of environmental protection is high and human body fanout free region is increasingly subject to favor.With the increasingly heating of the market demand, supply and demand lacks
Mouth continues to increase, and China's synthetic leather industry is just welcoming unprecedented opportunity to develop.Therefore, it is necessary to one kind have it is extremely soft
Soft feel, hydrolysis, low-temperature flex resistance and the high veneer available for clothing leather of adhesion strength.
The content of the invention
In order to solve the above problems and defect, it is an object of the invention to provide a kind of epoxide modified aqueous polyurethane of ultra-soft
Binding material and preparation method thereof.The ecological synthetic leather prepared by the aqueous polyurethane binding material has soft feel, resistance to
Hydrolysis, the advantages of low-temperature flex resistance and adhesion strength are high.
The aqueous polyurethane binding material that the ultra-soft of the present invention is epoxide modified is achieved through the following technical solutions：
According to the present invention, there is provided a kind of epoxide modified aqueous polyurethane binding material of ultra-soft, by each group of following proportioning
It is grouped into：Polypropylene glycol PPG 20-30 parts by weight, PTMG 30-50 parts by weight, epoxy resin 5-10
Parts by weight, isocyanates 20-30 parts by weight, hydrophilic chain extender 3-6 parts by weight, diamine chain stretching agent 1.25-5 parts by weight, salt forming agent
2-6 parts by weight.
Further, the aqueous polyurethane binding material is made up of each component of following proportioning：Polypropylene glycol polyether polyols
Alcohol 25-30 parts by weight, PTMG 35-50 parts by weight, epoxy resin 6-8 parts by weight, isocyanates 25-30 weight
Part, hydrophilic chain extender 4-5 parts by weight, diamine chain stretching agent 4-5 parts by weight, salt forming agent 3-5 parts by weight.
Further, the aqueous polyurethane binding material is made up of each component of following proportioning：Polypropylene glycol polyether polyols
The parts by weight of alcohol 30, the parts by weight of PTMG 45, the parts by weight of epoxy resin 5, the parts by weight of isocyanates 20.3, hydrophilic expansion
The parts by weight of chain agent 4, the parts by weight of diamine chain stretching agent 1.25, the parts by weight of salt forming agent 3.
Further, isocyanates can be one kind of hexamethylene diisocyanate, toluene di-isocyanate(TDI).
Further, salt forming agent can be one kind of ammoniacal liquor and triethylamine.
Further, hydrophilic chain extender can be one kind of dihydromethyl propionic acid, diaminobenzoic acid.
Further, diamine chain stretching agent can be urea.
Further, epoxy resin can be epoxy resin commonly used in the art, such as epoxy resin 128, epoxy resin
e51。
The present invention also provides a kind of preparation method of the epoxide modified aqueous polyurethane binding material of ultra-soft as described above,
Comprise the steps of：
1) proportioning as described above weighs each component material, by polypropylene glycol PPG, PTMG two
Alcohol and epoxy resin carry out thermal dehydration；
2) isocyanates will be added after the mixture cooling obtained by step 1), then heating and insulation reaction, measure NCO contain
Amount；
3) to addition hydrophilic chain extender and solvent after the mixture cooling obtained by step 2), NCO content is determined after reaction, so
After cool；
4) acetone viscosity reduction is added to the mixture obtained by step 3), and adds salt forming agent, deionization is added under high speed shear
Water is disperseed, and is being added diamine chain stretching agent, is being continued to disperse, the acetone in system is finally removed under reduced pressure, obtain ultra-soft epoxy and change
The aqueous polyurethane binding material of property.
Further, the thermal dehydration in step 1 is carried out in four-hole boiling flask, and thermal dehydration temperature is 90-120 DEG C, is taken off
The water time is 1-3h.
Further, the insulation reaction time in step 2 is 1.5-4h.
Further, the reaction time in step 3 is 2.5-5h.
Due to using above technical scheme, the present invention has the following advantages that compared with prior art：
The aqueous polyurethane binding material of the present invention has extremely soft feel, hydrolysis, low-temperature flex resistance, and glues
Knotting strength is high.The special veneer that can be used for clothing leather, belongs to use for synthetic leather leading portion environment-friendly materials.
Raw material are simple and easy to get in the aqueous polyurethane binding material of the present invention, and resin cost is relatively low, by formulation optimization,
Low modulus ultra-soft resin material is synthesized, and has excellent physical property, hydrolytic resistance, meets the performance requirement of synthetic leather；
The aqueous polyurethane binding material of the present invention is modified with epoxy resin to resin material, substantially increases resin
The adhesive property of material.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiment, to the present invention
It is further elaborated.It should be appreciated that specific embodiment described herein is not used to limit only to explain the present invention
The fixed present invention.
Embodiment 1
By 60g polypropylene glycols PPG (molecular weight 1000), 90g PTMGs, (molecular weight is
2000) add 105 DEG C of four-hole boiling flask with 10g epoxy resin 128 and be dehydrated 1 hour, be then cooled to 50 DEG C, it is sub- to add 40.6g six
Methyl diisocyanate, is warming up to 85 DEG C of insulation reactions 1.5 hours, then determines NCO content, 50 are cooled to after reaching theoretical value
DEG C, 8g dihydromethyl propionic acids and 20g solvent N-methyl pyrrolidones are added, 80 DEG C is continuously heating to and reacts 2.5 hours, measure
After NCO reaches theoretical value, 60 DEG C are cooled to, add 40g acetone viscosity reductions, be cooled to 50 DEG C, add 6g triethylamines and neutralize into salt, so
550ml deionized waters are added under high speed shear afterwards, are disperseed 2 minutes, the water-reducible 2.5g urea liquids of addition ice continue point
Dissipate 10 minutes, the acetone in system is finally removed under reduced pressure, obtains aqueous polyurethane leather surface material.Resulting water-based poly- ammonia
The performance indications of ester binding material are shown in Table 1.
The methods of heating employed in above-mentioned preparation process, cooling is customary way in the art.
Embodiment 2
By 20 parts by weight polypropylene glycol PPGs (molecular weight 1000), 30 parts by weight PTMGs
(molecular weight 2000) and 5 parts by weight epoxy resin 128 add 105 DEG C of four-hole boiling flask and are dehydrated 1 hour, are then cooled to 50 DEG C,
20 parts by weight hexamethylene diisocyanates are added, are warming up to 85 DEG C of insulation reactions 1.5 hours, NCO content is then determined, reaches
50 DEG C are cooled to after theoretical value, 3 parts by weight dihydromethyl propionic acids and 20g solvent N-methyl pyrrolidones is added, is continuously heating to
85 DEG C are reacted 2.5 hours, after measure NCO reaches theoretical value, are cooled to 60 DEG C, are added 40g acetone viscosity reductions, be cooled to 50 DEG C, add
Enter 2 parts by weight triethylamines to neutralize into salt, 550ml deionized waters are then added under high speed shear, are disperseed 2 minutes, addition ice
Water-reducible 3 parts by weight of urea solution, continue to disperse 10 minutes, the acetone in system is finally removed under reduced pressure, obtains water-based poly- ammonia
Ester leather surface material.The performance indications of resulting aqueous polyurethane binding material are shown in Table 1.
The methods of heating employed in above-mentioned preparation process, cooling is customary way in the art.
Embodiment 3
By 30 parts by weight polypropylene glycol PPGs (molecular weight 1000), 50 parts by weight PTMGs
(molecular weight 2000) and 10 parts by weight epoxy resin e51 add 110 DEG C of four-hole boiling flask and are dehydrated 1.5 hours, are then cooled to 60
DEG C, 30 parts by weight hexamethylene diisocyanates are added, are warming up to 80 DEG C of insulation reactions 1.5 hours, then determine NCO content,
60 DEG C are cooled to after reaching theoretical value, 6 parts by weight dihydromethyl propionic acids and 60g solvent N-methyl pyrrolidones is added, continues to rise
Warm to 80 DEG C are reacted 3.5 hours, after measure NCO reaches theoretical value, are cooled to 70 DEG C, are added 80g acetone viscosity reductions, be cooled to 60
DEG C, 6 parts by weight ammoniacal liquor are added, 600ml deionized waters are then added under high speed shear, are disperseed 2 minutes, addition is diluted with frozen water
5 parts by weight of urea solution, continue scattered 10 minutes, the acetone in system be finally removed under reduced pressure, obtains aqueous polyurethane leather
Surface material.The performance indications of resulting aqueous polyurethane binding material are shown in Table 1.
The methods of heating employed in above-mentioned preparation process, cooling is customary way in the art.
Embodiment 4
By 25 parts by weight polypropylene glycol PPGs (molecular weight 1000), 40 parts by weight PTMGs
(molecular weight 2000) and 6 parts by weight epoxy resin 128 add 90 DEG C of four-hole boiling flask and are dehydrated 1 hour, are then cooled to 50 DEG C, add
Enter 25 parts by weight hexamethylene diisocyanates, be warming up to 75 DEG C of insulation reactions 1.5 hours, then determine NCO content, reach reason
By being cooled to 50 DEG C after value, 4 parts by weight diaminobenzoic acids and 50g solvent N-methyl pyrrolidones are added, is continuously heating to 75
DEG C reaction 5 hours, after measure NCO reaches theoretical value, is cooled to 60 DEG C, adds 70g acetone viscosity reductions, be cooled to 50 DEG C, add 4 weights
Measure part triethylamine to neutralize into salt, 500ml deionized waters are then added under high speed shear, are disperseed 2 minutes, addition is diluted with frozen water
4 parts by weight of urea solution, continue scattered 10 minutes, the acetone in system be finally removed under reduced pressure, obtains aqueous polyurethane leather
Surface material.The performance indications of resulting aqueous polyurethane binding material are shown in Table 1.
The methods of heating employed in above-mentioned preparation process, cooling is customary way in the art.
Embodiment 5
By 28 parts by weight polypropylene glycol PPGs (molecular weight 1000), 46 parts by weight PTMGs
(molecular weight 2000) and 8 parts by weight epoxy resin e51 add 120 DEG C of four-hole boiling flask and are dehydrated 3 hours, are then cooled to 50 DEG C,
23 parts by weight of toluene diisocyanate are added, are warming up to 80 DEG C of insulation reactions 4 hours, NCO content is then determined, reaches theoretical value
After be cooled to 50 DEG C, add 5 parts by weight diaminobenzoic acids and 55g solvent N-methyl pyrrolidones, be continuously heating to 80 DEG C it is anti-
Answer 2.5 hours, after measure NCO reaches theoretical value, be cooled to 60 DEG C, add 70g acetone viscosity reductions, be cooled to 50 DEG C, add 3 weight
Part ammoniacal liquor, then adds 580ml deionized waters under high speed shear, disperses 2 minutes, the water-reducible 3 parts by weight urine of addition ice
Plain solution, continue to disperse 10 minutes, the acetone in system is finally removed under reduced pressure, obtains aqueous polyurethane leather surface material.Institute
The performance indications of obtained aqueous polyurethane binding material are shown in Table 1.
The methods of heating employed in above-mentioned preparation process, cooling is customary way in the art.
Embodiment 1-5 NCO (nitrogen carbon oxygen) theoretical value is generally n (NCO)/n (OH), about 0.94-1.06.
Table 1
NMP in table 1 is N-methyl pyrrolidones.
From embodiment 1-5 and table 1 as can be seen that the aqueous polyurethane binding material of the present invention has extremely soft hand
Feel (50-100cps/25 DEG C of viscosity), hydrolysis (6 months without precipitation), low-temperature flex resistance, dicyandiamide solution enriches (water, NMP)
And adhesion strength is high, the wherein epoxide modified each performance indications of aqueous polyurethane binding material of ultra-soft made from embodiment 1 are obvious
Better than other embodiment, and the feel during use is best, and hydrolytic resistance is strong, and low-temperature flex resistance is also optimal, adhesion strength
Also higher, stability in use is also significantly better than other embodiment.
Presently preferred embodiments of the present invention is the foregoing is only, is not used for limiting the practical range of the present invention；If do not take off
From the spirit and scope of the present invention, the present invention is modified or equivalent substitution, all should covered in the claims in the present invention
Among protection domain.
Claims (7)
1. the epoxide modified aqueous polyurethane binding material of a kind of ultra-soft, it is characterised in that be made up of each component of following proportioning：
Polypropylene glycol PPG 20-30 parts by weight, PTMG 30-50 parts by weight, epoxy resin 5-10 parts by weight,
Isocyanates 20-30 parts by weight, hydrophilic chain extender 3-6 parts by weight, diamine chain stretching agent 1.25-5 parts by weight, salt forming agent 2-6 weight
Part.
2. the epoxide modified aqueous polyurethane binding material of ultra-soft according to claim 1, it is characterised in that by matching somebody with somebody below
The each component composition of ratio：Polypropylene glycol PPG 25-30 parts by weight, PTMG 35-50 parts by weight, epoxy
Resin 6-8 parts by weight, isocyanates 25-30 parts by weight, hydrophilic chain extender 4-5 parts by weight, diamine chain stretching agent 4-5 parts by weight, into
Salt agent 3-5 parts by weight.
3. the epoxide modified aqueous polyurethane binding material of ultra-soft according to claim 1, it is characterised in that by matching somebody with somebody below
The each component composition of ratio：The parts by weight of polypropylene glycol PPG 30, the parts by weight of PTMG 45, epoxy resin 5
Parts by weight, the parts by weight of isocyanates 20.3, the parts by weight of hydrophilic chain extender 4, the parts by weight of diamine chain stretching agent 1.25, the weight of salt forming agent 3
Part.
A kind of 4. preparation side of the epoxide modified aqueous polyurethane binding material of ultra-soft described in above-mentioned any one claim
Method, it is characterised in that comprise the steps of：
1) proportioning as any one of claim 1-3 weighs each component material, by polypropylene glycol PPG, poly- four
Hydrogen furans ether glycol and epoxy resin carry out thermal dehydration；
2) isocyanates will be added after the mixture cooling obtained by step 1), then heating and insulation reaction, determine NCO content；
3) to addition hydrophilic chain extender and solvent after the mixture cooling obtained by step 2), NCO content is determined after reaction, is then dropped
Temperature；
4) acetone viscosity reduction is added to the mixture obtained by step 3), and adds salt forming agent, deionized water is added under high speed shear and is entered
Row is scattered, is adding diamine chain stretching agent, is continuing to disperse, the acetone in system is finally removed under reduced pressure, it is epoxide modified to obtain ultra-soft
Aqueous polyurethane binding material.
5. preparation method according to claim 4, it is characterised in that the thermal dehydration in the step 1 is in four-hole boiling flask
Middle progress, thermal dehydration temperature are 90-120 DEG C, dewatering time 1-3h.
6. preparation method according to claim 4, it is characterised in that the insulation reaction time in the step 2 is 1.5-
4h。
7. preparation method according to claim 4, it is characterised in that the reaction time in the step 3 is 2.5-5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710710195.2A CN107459621A (en) | 2017-08-18 | 2017-08-18 | Epoxide modified aqueous polyurethane binding material of a kind of ultra-soft and preparation method thereof |
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| CN110845684A (en) * | 2019-11-29 | 2020-02-28 | 江苏宝泽高分子材料股份有限公司 | Preparation method of bonding material for ecological synthetic leather and bonding material |
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