CN110078882A - A kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body - Google Patents
A kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body Download PDFInfo
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- CN110078882A CN110078882A CN201910350839.0A CN201910350839A CN110078882A CN 110078882 A CN110078882 A CN 110078882A CN 201910350839 A CN201910350839 A CN 201910350839A CN 110078882 A CN110078882 A CN 110078882A
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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
-
- 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
- C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three 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
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4816—Two or more polyethers of different physical or chemical nature mixtures of two or more polyetherpolyols having at least three 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
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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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
- C08G18/4829—Polyethers containing at least three hydroxy groups
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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
- C08G18/7657—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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- 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
- C08G18/77—Polyisocyanates or polyisothiocyanates having heteroatoms in addition to the isocyanate or isothiocyanate nitrogen and oxygen or sulfur
- C08G18/78—Nitrogen
- C08G18/79—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates
- C08G18/797—Nitrogen characterised by the polyisocyanates used, these having groups formed by oligomerisation of isocyanates or isothiocyanates containing carbodiimide and/or uretone-imine groups
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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
- C09J7/00—Adhesives in the form of films or foils
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
-
- 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
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/10—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet
- C09J2301/12—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers
- C09J2301/124—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive tape or sheet by the arrangement of layers the adhesive layer being present on both sides of the carrier, e.g. double-sided adhesive tape
-
- 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
- C09J2475/00—Presence of polyurethane
Abstract
The invention belongs to technical field of polyurethane elastomer more particularly to a kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body, comprising the following steps: polyether polyol is taken to heat while stirring, Carbodiimide-Modified MDI or pure MDI is added in decompression water removal, cooling, heating, reaction, sampling and measuring-NCO content, after reaching predetermined value, stop heating, cooling, blowing obtain base polyurethane prepolymer for use as；Base polyurethane prepolymer for use as and curing agent-agent mixture are respectively placed in casting machine I tank and P tank, heating, de-bubble is depressurized, base polyurethane prepolymer for use as and curing agent-agent mixture are uniformly mixed, mixture is obtained, then it is poured on substrate, 65-85 DEG C heating 10-15 minutes, paste release film, winding, place to get.Compared with the existing technology, material hardness (Asker C) prepared by the present invention is 12~22, and peel strength reaches 2.4N/cm or more, (100 DEG C of peel strength conservation rate, 168h) it is not less than 70%, is able to satisfy the performance requirement of double-sided adhesive rubber belt material, there is important application value.
Description
Technical field
The invention belongs to technical field of polyurethane elastomer more particularly to a kind of double-sided adhesive adhesive tape polyurethane elastomers
Preparation method.
Background technique
Double-sided adhesive, which is divided into, has substrate double-sided adhesive and without substrate double-sided adhesive, substrate double-sided adhesive be with cotton paper, PET, PVC film,
Non-woven fabrics etc. is substrate, and double-faced uniform coating elastomeric type pressure sensitive adhesive, resin pressure sensitive adhesive or acrylic pressure-sensitive adhesivee paste release
Web-like made of paper (film) or the adhesive tape of sheet.No substrate double-sided adhesive is the direct coating elastomeric on release paper (film) material
The adhesive such as type pressure sensitive adhesive, resin pressure sensitive adhesive or acrylic pressure-sensitive adhesivee, the adhesive tape of manufactured web-like or sheet.Double-sided adhesive
Used adhesive is divided into solvent-based adhesive, emulsion adhesive, hot-melt adhesive and response type adhesive etc..It is double
Face glue is widely used in the use such as leather, inscription plate, stationery, electronics, automobile edging are fixed, the stickup of shoes industry, paper processed, artifacts positions
On the way.
Though solvent-based adhesive double-sided adhesive bonding force is stronger, production efficiency is higher, not environmentally, to the body of producers
Health and environment impact；Emulsion adhesive double-sided adhesive production efficiency is lower；Hot-melt adhesive double-sided adhesive bonding force compared with
It is weak；And polyurethane elastomer selects and is formulated to adjust by raw material, can prepare the whole super-low-hardness with high viscosity, thickness
Spend the sticky glue-line of 0.2-3mm.The maximum advantage of this glue-line is not pollute by sticky end material, leaves no trace on ground, i.e., without
Trace is removable, can also repeatedly use, not influence using effect.Traditional double-sided adhesive is attached to due to adhesive by sticky end material
It is difficult to remove, easy to pollute by sticky end material, blades fit hair dryer need to be used by removing adhesive, a little strikes off, quilt easy to damage in this way
Sticky end material.If the release paper (film) of no substrate adheres to a thin layer high viscosity polyurethane in the one or both sides for having substrate double-sided adhesive
Elastomer can improve the deficiency of traditional double-sided adhesive, contain admittedly due to 100%, environmentally friendly, low operation temperature, production efficiency
It is high.Such double-sided adhesive can be widely used in sticky mats dedusting, the fixation for printing addendum, carpet skid pad, and Leather cover for handset fixes mobile phone,
Bottle is fixed, and navigation bracket patch, ornaments are fixed, and removable patch of handset bracket etc., since its is widely used, high yield rate can be occupied
Certain market share obtains preferable economic benefit.
Summary of the invention
It is an object of the invention to: in view of the deficiencies of the prior art, and provide a kind of double-sided adhesive adhesive tape elastic polyurethane
The preparation method of body, the double-sided adhesive adhesive tape polyurethane elastomer obtained using this method have 100% solid content, it is environmentally protective,
0.3-2mm thickness may be selected, hydrolysis, bonding force are strong, does not pollute ground, is reusable, low operation temperature, high production efficiency
The advantages that, it can be widely applied to artifacts production, handicraft is pasted, electronic product is fixed, toy stickups, is done, accuses gardening
The various stickups shown etc..
In order to achieve the above object, the present invention adopts the following technical scheme:
A kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body, at least includes the following steps:
The first step, the preparation of base polyurethane prepolymer for use as: taking 100 mass parts polyether polyol to be heated to 105 DEG C -115 DEG C while stirring,
Decompression water removal -3 hours 2 hours, is cooled to 50 DEG C -70 DEG C, and the Carbodiimide-Modified MDI of -76 mass parts of 30 mass parts is added
Or the pure MDI of -72 mass parts of 30 mass parts, 80 DEG C -90 DEG C are warming up to, is reacted -3 hours 2 hours, sampling and measuring-NCO content,
After reaching predetermined value 8.0%-12.0%, stops heating, be cooled to 50 DEG C -60 DEG C, blowing obtains base polyurethane prepolymer for use as；
Base polyurethane prepolymer for use as is placed in casting machine I tank by second step, is heated to 40 DEG C -50 DEG C, depressurizes de-bubble, curing agent-is helped
Agent composition is placed in casting machine P tank, is heated to 40 DEG C -50 DEG C, de-bubble is depressurized, by base polyurethane prepolymer for use as and curing agent-auxiliary agent
Mixture presses (15~20): 100 mass ratio is uniformly mixed, and obtains mixture, then mixture is poured on substrate, 65-
85 DEG C heating 10-15 minutes, paste release film, winding, place to get the double-sided adhesive adhesive tape polyurethane elastomer.
The present invention is available two-sided by control base polyurethane prepolymer for use as and curing agent-agent mixture mass ratio
The hardness (Asker C) of glue adhesive tape polyurethane elastomer is 12~22, and hardness is low, and elasticity is good.Finished product is produced using the present invention,
Reaction speed is fast, high production efficiency.
As a kind of improvement of double-sided adhesive adhesive tape method for preparing polyurethane elastic body of the present invention, the curing agent-is helped
Agent composition includes -1130 mass parts polyether polyol of 800 mass parts, -6 mass parts antioxidant of 3 mass parts, 2 mass parts -3
Mass parts ultraviolet absorbing agent, -3.0 mass parts ultra-violet stabilizer of 1.5 mass parts, -0.4 mass parts levelling agent of 0.2 mass parts,
- 1.2 mass parts mill base of -0.4 mass parts organotin catalysts of 0.2 mass parts and 0.7 mass parts.
As a kind of improvement of double-sided adhesive adhesive tape method for preparing polyurethane elastic body of the present invention, the polyether polyol
For Polyoxypropylene diol and/or polypropylene oxide trihydroxylic alcohol, the relative molecular mass of the Polyoxypropylene diol is
2000-4000, the relative molecular mass of the polypropylene oxide trihydroxylic alcohol are 5000-6000.
As a kind of improvement of double-sided adhesive adhesive tape method for preparing polyurethane elastic body of the present invention, the ultraviolet radiation absorption
Agent is hydroxyl phenol Benzotriazole Ultraviolet Stabilizer, and the ultra-violet stabilizer is hindered amine light stabilizer.
As a kind of improvement of double-sided adhesive adhesive tape method for preparing polyurethane elastic body of the present invention, the antioxidant is
Hindered phenol anti-oxidants 1076.
As a kind of improvement of double-sided adhesive adhesive tape method for preparing polyurethane elastic body of the present invention, the levelling agent is poly-
Ether modified polyorganosiloxane, the organotin catalysts are environment-friendly type organotin catalysts.
As a kind of improvement of double-sided adhesive adhesive tape method for preparing polyurethane elastic body of the present invention, the curing agent-is helped
Agent composition the preparation method comprises the following steps: polyether polyol, antioxidant and mill base are heated to 105 DEG C -115 DEG C while stirring, subtract
Pressure water removal -3 hours 2 hours, is cooled to 55 DEG C -65 DEG C, and ultraviolet absorbing agent, ultra-violet stabilizer, levelling agent and organic is added
Tin catalyst stirs -15 minutes 10 minutes, and blowing obtains curing agent-agent mixture.
Wherein, mill base selects purple mill base, this is because lilac can increase transparent feel and mitigate vision xanthochromia effect.
As a kind of improvement of double-sided adhesive adhesive tape method for preparing polyurethane elastic body of the present invention, the carbodiimides
The mass fraction of carbodiimides is 10%-20% in modified MDI.
As a kind of improvement of double-sided adhesive adhesive tape method for preparing polyurethane elastic body of the present invention, using the method system
The hardness (Asker C) of standby double-sided adhesive adhesive tape polyurethane elastomer be 12~22, peel strength reach 2.4N/cm or more, 100
DEG C heat ageing coefficient is not less than 70%, compared with the existing technology, the present invention using solvent-free design, select odorlessness or low smell
It polyether polyol and is catalyzed using environment-friendly type organotin catalysts, the safety and environmental protection requirement of double-sided adhesive adhesive tape, and this hair can be met
Bright resulting materials UV resistant, heat-resisting, simple process, leftover bits are few, products thickness is uniform, adjustable, material adhesive strength height,
Reusable, not contaminated substrate.Using the hardness of double-sided adhesive adhesive tape polyurethane elastomer prepared by method of the invention
(Asker C) is 12~22, and peel strength reaches 2.4N/cm or more, and (100 DEG C, 168h) of peel strength conservation rate are not less than 70%,
It is able to satisfy the performance requirement of double-sided adhesive rubber belt material, there is important application value.
Specific embodiment
Embodiment 1
A kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body is present embodiments provided, is at least included the following steps:
(1) preparation of base polyurethane prepolymer for use as
100 parts of Polyoxypropylene diol that relative molecular mass is 2000 are weighed, are heated to 105 DEG C while stirring, decompression removes
Water 2 hours, 68 DEG C are cooled to, 59 parts of Carbodiimide-Modified MDI are added, is warming up to 88 DEG C, is reacted 2.5 hours, be measured by sampling-
NCO content after reaching predetermined value 8.1%, stops heating, is cooled to 55 DEG C, blowing obtains base polyurethane prepolymer for use as；Wherein, described
The mass fraction of carbodiimides is 13%. in Carbodiimide-Modified MDI
(2) curing agent-agent mixture preparation
Weigh the polyoxygenated third that 74 parts of Polyoxypropylene diol, relative molecular mass that relative molecular mass is 2000 are 6000
734 parts of alkene trihydroxylic alcohol, 3.7 parts of antioxidant and 0.73 part of purple mill base are heated to 105 DEG C while stirring, and decompression water removal 2 is small
When, 60 DEG C are cooled to, it is organic that 2.0 parts of ultraviolet absorbing agent, 1.7 parts of ultra-violet stabilizer, 0.22 part of levelling agent and environmental protection is added
It 0.22 part of tin catalyst, stirs 12 minutes, blowing obtains curing agent-agent mixture.
(3) preparation of double-sided adhesive adhesive tape polyurethane elastomer
The base polyurethane prepolymer for use as that step (1) obtains is placed in casting machine I tank, is heated to 40 DEG C, de-bubble is depressurized, step (2)
Obtained curing agent-agent mixture is placed in casting machine P tank, is heated to 40 DEG C, depressurizes de-bubble, base polyurethane prepolymer for use as and solidification
Agent-agent mixture presses the mass ratio of 19:100, is uniformly mixed, obtains mixture, then mixture is poured on substrate, and 75
DEG C heating 15 minutes, paste release film, winding, place to get the double-sided adhesive adhesive tape polyurethane elastomer.
Hardness (Asker C) is measured by " 0101 standard of SRIS ", and peel strength presses " GB/T 15254-2014 sulphur
Change rubber and metal adhesive 180。Disbonded test " it is measured, (100 DEG C, 168h) of peel strength conservation rate are pressed " GB/T 3512-
2014 vulcanized rubbers or the accelerated ageing of thermoplastic elastomer hot-air and heat resistant test " it is measured.
It is as follows to be detected the resulting double-sided adhesive adhesive tape polyurethane elastomer physical property of the present embodiment: hardness (Asker
It C) is 15, peel strength 2.5N/cm, (100 DEG C, 168h) of peel strength conservation rate are 72%.
Embodiment 2
A kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body is present embodiments provided, is at least included the following steps:
(1) preparation of base polyurethane prepolymer for use as
100 parts of Polyoxypropylene diol that relative molecular mass is 2000 are weighed, are heated to 108 DEG C while stirring, decompression removes
Water 2.2 hours, 65 DEG C are cooled to, 31 parts of Carbodiimide-Modified MDI are added, 31 parts of pure MDI are added, is warming up to 85 DEG C, reaction
2.4 hours, sampling and measuring-NCO content after reaching predetermined value 9.2%, stopped heating, is cooled to 58 DEG C, blowing obtains polyurethane
Performed polymer；Wherein, the mass fraction of carbodiimides is 15%. in the Carbodiimide-Modified MDI
(2) curing agent-agent mixture preparation
Weigh the polyoxygenated third that 89 parts of Polyoxypropylene diol, relative molecular mass that relative molecular mass is 2000 are 4000
89 parts of alkene dihydric alcohol, 738 parts of polypropylene oxide trihydroxylic alcohol, 4.5 parts of antioxidant and the purple color that relative molecular mass is 6000
0.90 part of slurry, is heated to 110 DEG C while stirring, and decompression water removal 2.5 hours is cooled to 58 DEG C, ultraviolet absorbing agent 2.1 is added
Part, 2.1 parts of ultra-violet stabilizer, 0.30 part of levelling agent and environmentally friendly 0.32 part of organotin catalysts, are stirred 13 minutes, blowing obtains
To curing agent-agent mixture.
(3) preparation of double-sided adhesive adhesive tape polyurethane elastomer
The base polyurethane prepolymer for use as that step (1) obtains is placed in casting machine I tank, is heated to 42 DEG C, de-bubble is depressurized, step (2)
Obtained curing agent-agent mixture is placed in casting machine P tank, is heated to 43 DEG C, depressurizes de-bubble, base polyurethane prepolymer for use as and solidification
Agent-agent mixture presses the mass ratio of 17:100, is uniformly mixed, obtains mixture, then mixture is poured on substrate, and 80
DEG C heating 12 minutes, paste release film, winding, place to get the double-sided adhesive adhesive tape polyurethane elastomer.
Hardness (Asker C) is measured by " 0101 standard of SRIS ", and peel strength presses " GB/T 15254-2014 sulphur
Change rubber and metal adhesive 180。Disbonded test " it is measured, (100 DEG C, 168h) of peel strength conservation rate are pressed " GB/T 3512-
2014 vulcanized rubbers or the accelerated ageing of thermoplastic elastomer hot-air and heat resistant test " it is measured.
It is as follows to be detected the resulting double-sided adhesive adhesive tape polyurethane elastomer physical property of the present embodiment: hardness (Asker
It C) is 13, peel strength 2.6N/cm, (100 DEG C, 168h) of peel strength conservation rate are 71%.
Embodiment 3
A kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body is present embodiments provided, is at least included the following steps:
(1) preparation of base polyurethane prepolymer for use as
100 parts of Polyoxypropylene diol that relative molecular mass is 2000 are weighed, are heated to 112 DEG C while stirring, decompression removes
Water 2.2 hours, 62 DEG C are cooled to, 75 parts of Carbodiimide-Modified MDI are added, is warming up to 82 DEG C, is reacted 2.6 hours, sampling is surveyed
Fixed-NCO content after reaching predetermined value 10.0%, stops heating, is cooled to 60 DEG C, blowing obtains base polyurethane prepolymer for use as；Wherein,
The mass fraction of carbodiimides is 15%. in the Carbodiimide-Modified MDI
(2) curing agent-agent mixture preparation
Weigh the polyoxygenated that 154 parts of Polyoxypropylene diol, relative molecular mass that relative molecular mass is 2000 are 5000
386 parts of propylene trihydroxylic alcohol, 386 parts of polypropylene oxide trihydroxylic alcohol, 3.9 parts of antioxidant and the purple that relative molecular mass is 6000
1.2 parts of mill base, it is heated to 112 DEG C while stirring, decompression water removal 2.8 hours is cooled to 62 DEG C, ultraviolet absorbing agent 2.1 is added
Part, 1.8 parts of ultra-violet stabilizer, 0.31 part of levelling agent and environmentally friendly 0.31 part of organotin catalysts, are stirred 15 minutes, blowing obtains
To curing agent-agent mixture.
(3) preparation of double-sided adhesive adhesive tape polyurethane elastomer
The base polyurethane prepolymer for use as that step (1) obtains is placed in casting machine I tank, is heated to 46 DEG C, de-bubble is depressurized, step (2)
Obtained curing agent-agent mixture is placed in casting machine P tank, is heated to 45 DEG C, depressurizes de-bubble, base polyurethane prepolymer for use as and solidification
Agent-agent mixture presses the mass ratio of 18:100, is uniformly mixed, obtains mixture, then mixture is poured on substrate, and 82
DEG C heating 14 minutes, paste release film, winding, place to get the double-sided adhesive adhesive tape polyurethane elastomer.
Hardness (Asker C) is measured by " 0101 standard of SRIS ", and peel strength presses " GB/T 15254-2014 sulphur
Change rubber and metal adhesive 180。Disbonded test " it is measured, (100 DEG C, 168h) of peel strength conservation rate are pressed " GB/T 3512-
2014 vulcanized rubbers or the accelerated ageing of thermoplastic elastomer hot-air and heat resistant test " it is measured.
It is as follows to be detected the resulting double-sided adhesive coiled material polyurethane elastomer physical property of the present embodiment: hardness (Asker
It C) is 16, peel strength 2.5N/cm, (100 DEG C, 168h) of peel strength conservation rate are 75%.
Embodiment 4
A kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body is present embodiments provided, is at least included the following steps:
(1) preparation of base polyurethane prepolymer for use as
100 parts of Polyoxypropylene diol that relative molecular mass is 2000 are weighed, are heated to 115 DEG C while stirring, decompression removes
Water 2.7 hours, 64 DEG C are cooled to, 70 parts of pure MDI are added, is warming up to 86 DEG C, is reacted 2.7 hours, sampling and measuring-NCO content reaches
To after predetermined value 11.0%, stops heating, be cooled to 57 DEG C, blowing obtains base polyurethane prepolymer for use as；Wherein, the carbodiimides
The mass fraction of carbodiimides is 13%. in modified MDI
(2) curing agent-agent mixture preparation
Weigh the polyoxygenated that 216 parts of Polyoxypropylene diol, relative molecular mass that relative molecular mass is 2000 are 6000
866 parts of propylene trihydroxylic alcohol, 5.2 parts of antioxidant and 1.05 parts of purple mill base are heated to 115 DEG C, decompression water removal 2.8 while stirring
Hour, 60 DEG C are cooled to, 3.0 parts of ultraviolet absorbing agent, 2.2 parts of ultra-violet stabilizer, 0.35 part of levelling agent and environmental protection, which is added, to be had
It 0.33 part of machine tin catalyst, stirs 14 minutes, blowing obtains curing agent-agent mixture.
(3) preparation of double-sided adhesive adhesive tape polyurethane elastomer
The base polyurethane prepolymer for use as that step (1) obtains is placed in casting machine I tank, is heated to 48 DEG C, de-bubble is depressurized, step (2)
Obtained curing agent-agent mixture is placed in casting machine P tank, is heated to 46 DEG C, depressurizes de-bubble, base polyurethane prepolymer for use as and solidification
Agent-agent mixture presses the mass ratio of 16:100, is uniformly mixed, obtains mixture, then mixture is poured on substrate, and 75
DEG C heating 13 minutes, paste release film, winding, place to get the double-sided adhesive adhesive tape polyurethane elastomer.
Hardness (Asker C) is measured by " 0101 standard of SRIS ", and peel strength presses " GB/T 15254-2014 sulphur
Change rubber and metal adhesive 180。Disbonded test " it is measured, (100 DEG C, 168h) of peel strength conservation rate are pressed " GB/T 3512-
2014 vulcanized rubbers or the accelerated ageing of thermoplastic elastomer hot-air and heat resistant test " it is measured.
It is as follows to be detected the resulting double-sided adhesive adhesive tape polyurethane elastomer physical property of the present embodiment: hardness (Asker
It C) is 18, peel strength 2.7N/cm, (100 DEG C, 168h) of peel strength conservation rate are 76%.
Embodiment 5
A kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body is present embodiments provided, is at least included the following steps:
(1) preparation of base polyurethane prepolymer for use as
100 parts of Polyoxypropylene diol that relative molecular mass is 2000 are weighed, are heated to 113 DEG C while stirring, decompression removes
Water 2.9 hours, 66 DEG C are cooled to, 60 parts of Carbodiimide-Modified MDI are added, 30 parts of pure MDI are added, is warming up to 89 DEG C, reaction
3.0 hours, sampling and measuring-NCO content after reaching predetermined value 12.0%, stopped heating, is cooled to 60 DEG C, blowing obtains poly- ammonia
Ester performed polymer；Wherein, the mass fraction of carbodiimides is 18%. in the Carbodiimide-Modified MDI
(2) curing agent-agent mixture preparation
Weigh the polyoxygenated that 225 parts of Polyoxypropylene diol, relative molecular mass that relative molecular mass is 2000 are 5000
900 parts of propylene trihydroxylic alcohol, 5.4 parts of antioxidant and 1.08 parts of purple mill base are heated to 108 DEG C, decompression water removal 2.5 while stirring
Hour, 64 DEG C are cooled to, 2.8 parts of ultraviolet absorbing agent, 2.6 parts of ultra-violet stabilizer, 0.39 part of levelling agent and environmental protection, which is added, to be had
It 0.36 part of machine tin catalyst, stirs 15 minutes, blowing obtains curing agent-agent mixture.
(3) preparation of double-sided adhesive adhesive tape polyurethane elastomer
The base polyurethane prepolymer for use as that step (1) obtains is placed in casting machine I tank, is heated to 50 DEG C, de-bubble is depressurized, step (2)
Obtained curing agent-agent mixture is placed in casting machine P tank, is heated to 48 DEG C, depressurizes de-bubble, base polyurethane prepolymer for use as and solidification
Agent-agent mixture presses the mass ratio of 17:100, is uniformly mixed, obtains mixture, then mixture is poured on substrate, and 80
DEG C heating 12 minutes, paste release film, winding, place to get the double-sided adhesive adhesive tape polyurethane elastomer.
Hardness (Asker C) is measured by " 0101 standard of SRIS ", and peel strength presses " GB/T 15254-2014 sulphur
Change rubber and metal adhesive 180。Disbonded test " it is measured, (100 DEG C, 168h) of peel strength conservation rate are pressed " GB/T 3512-
2014 vulcanized rubbers or the accelerated ageing of thermoplastic elastomer hot-air and heat resistant test " it is measured.
It is as follows to be detected the resulting double-sided adhesive adhesive tape polyurethane elastomer physical property of the present embodiment: hardness (Asker
It C) is 20, peel strength 2.8N/cm, (100 DEG C, 168h) of peel strength conservation rate are 74%.
According to the disclosure and teachings of the above specification, those skilled in the art in the invention can also to above embodiment into
Row change and modification appropriate.Therefore, the invention is not limited to the specific embodiments disclosed and described above, to the present invention
Some modifications and changes should also be as falling into the scope of the claims of the present invention.In addition, although making in this specification
With some specific terms, these terms are merely for convenience of description, does not limit the present invention in any way.
Claims (10)
1. a kind of double-sided adhesive adhesive tape method for preparing polyurethane elastic body, which is characterized in that at least include the following steps:
The first step, the preparation of base polyurethane prepolymer for use as: taking 100 mass parts polyether polyol to be heated to 105 DEG C -115 DEG C while stirring,
Decompression water removal -3 hours 2 hours, is cooled to 50 DEG C -70 DEG C, and the Carbodiimide-Modified MDI of -76 mass parts of 30 mass parts is added
Or the pure MDI of -72 mass parts of 30 mass parts, 80 DEG C -90 DEG C are warming up to, is reacted -3 hours 2 hours, sampling and measuring-NCO content,
After reaching predetermined value 8.0%-12.0%, stops heating, be cooled to 50 DEG C -60 DEG C, blowing obtains base polyurethane prepolymer for use as；
Base polyurethane prepolymer for use as is placed in casting machine I tank by second step, is heated to 40 DEG C -50 DEG C, depressurizes de-bubble, curing agent-is helped
Agent composition is placed in casting machine P tank, is heated to 40 DEG C -50 DEG C, de-bubble is depressurized, by base polyurethane prepolymer for use as and curing agent-auxiliary agent
Mixture presses (15~20): 100 mass ratio is uniformly mixed, and obtains mixture, then mixture is poured on substrate, 65-
85 DEG C heating 10-15 minutes, paste release film, winding, place to get the double-sided adhesive coiled material polyurethane elastomer.
2. double-sided adhesive adhesive tape method for preparing polyurethane elastic body according to claim 1, it is characterised in that: described poly-
Urethane performed polymer includes 30 mass parts -76 mass parts Carbodiimide-Modified MDI or the pure MDI of -72 mass parts of 30 mass parts.
3. double-sided adhesive adhesive tape method for preparing polyurethane elastic body according to claim 1, it is characterised in that: described solid
Agent-agent mixture includes -1130 mass parts polyether polyol of 800 mass parts, -3 mass parts ultraviolet absorbing agent of 2 mass parts
With -3.0 mass parts ultra-violet stabilizer of 1.5 mass parts, -6 mass parts antioxidant of 3 mass parts, -0.4 mass parts of 0.2 mass parts
- 1.2 mass parts mill base of levelling agent, -0.4 mass parts organotin catalysts of 0.2 mass parts and 0.7 mass parts.
4. double-sided adhesive adhesive tape method for preparing polyurethane elastic body according to claim 3, it is characterised in that: described poly-
Ethoxylated polyhydric alcohol is Polyoxypropylene diol and/or polypropylene oxide trihydroxylic alcohol, and the opposite of the Polyoxypropylene diol is divided
Protonatomic mass is 2000-4000, and the relative molecular mass of the polypropylene oxide trihydroxylic alcohol is 5000-6000.
5. double-sided adhesive adhesive tape method for preparing polyurethane elastic body according to claim 3, it is characterised in that: the purple
Ultraviolet absorbers are hydroxyl phenol Benzotriazole Ultraviolet Stabilizer, and the ultra-violet stabilizer is stablized for hindered amines light
Agent.
6. double-sided adhesive adhesive tape method for preparing polyurethane elastic body according to claim 3, it is characterised in that: described anti-
Oxidant is hindered phenol anti-oxidants 1076.
7. double-sided adhesive adhesive tape method for preparing polyurethane elastic body according to claim 3, it is characterised in that: the stream
Flat agent is Siloxane-Oxyalkylene Copolymers, and the organotin catalysts are environment-friendly type organotin catalysts.
8. double-sided adhesive adhesive tape method for preparing polyurethane elastic body according to claim 3, which is characterized in that described solid
Agent-agent mixture the preparation method comprises the following steps: by polyether polyol, antioxidant and mill base be heated to while stirring 105 DEG C-
115 DEG C, decompression water removal -3 hours 2 hours is cooled to 55 DEG C -65 DEG C, ultraviolet absorbing agent, ultra-violet stabilizer, levelling is added
Agent and organotin catalysts stir -15 minutes 10 minutes, and blowing obtains curing agent-agent mixture.
9. double-sided adhesive adhesive tape method for preparing polyurethane elastic body according to claim 2, it is characterised in that: the carbon
The mass fraction for changing carbodiimides in the modified MDI of diimine is 10%-20%.
10. double-sided adhesive adhesive tape method for preparing polyurethane elastic body according to claim 1, it is characterised in that: use
The hardness (Asker C) of the double-sided adhesive adhesive tape polyurethane elastomer of the method preparation is 12~22, and peel strength reaches 2.4N/
Cm or more, (100 DEG C, 168h) of peel strength conservation rate are not less than 70%.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116425945A (en) * | 2023-05-15 | 2023-07-14 | 东莞华工佛塑新材料有限公司 | Polyurethane elastomer glazed-drop sole and preparation method thereof |
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