CN106479399A - The double glazing superpower sealant of one-component solvent-free - Google Patents
The double glazing superpower sealant of one-component solvent-free Download PDFInfo
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- CN106479399A CN106479399A CN201510524731.0A CN201510524731A CN106479399A CN 106479399 A CN106479399 A CN 106479399A CN 201510524731 A CN201510524731 A CN 201510524731A CN 106479399 A CN106479399 A CN 106479399A
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- sealant
- double glazing
- superpower
- free
- component solvent
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Abstract
The invention discloses a kind of double glazing superpower sealant of one-component solvent-free, the fluid sealant includes methyl diisocyanate hexichol prepolymer, ethylene-vinyl acetate copolymer and polyethylene, have, on methyl diisocyanate hexichol prepolymer, the isocyano not reacted completely, and contained crystallinity unit accounts for 10～50wt.% of three's gross mass in methyl diisocyanate hexichol prepolymer, ethylene-vinyl acetate copolymer and polyethylene, the fluid sealant has certain intensity after the completion of gluing, can achieve the instant movement after double glazing gluing；Isocyano on methyl diisocyanate hexichol prepolymer can be reacted with the air aqueous vapor, and intensity can be strengthened further after continuing to place, in addition in the fluid sealant, crystallinity unit can cause fluid sealant mechanical property to strengthen as nucleus component, and with good heat resistance, solvent resistance and moisture permeability.
Description
Technical field
The present invention relates to a kind of glass sealant, more particularly to a kind of hollow glass
The glass superpower sealant of one-component solvent-free, belongs to encapsulant technical field.
Background technology
Double glazing is made up of two panels or three sheet glass, viscous in periphery using binding agent
Knot sealing, sheet glass and the metal frame such as aluminum alloy frame for including drier are bondd, with
When see filling inert gas in glassy layer, make glass interlayer formed dry inert gas control
Part, makes efficient sound-insulating and heat-insulating hollow glass system.
At present at home and abroad, for double glazing using fluid sealant have more grinding
Study carefully.Currently used more fluid sealant is mostly hot melt butyl sealant, silicone seal
Glue, silicone fluid sealant, are mostly double-component fluid sealant in above-mentioned fluid sealant,
Need first to mix two kinds of components according to the ratio that examines before gluing, therefore easily
Because mixed proportion not to or mixing inequality cause the change of fluid sealant performance, so as to produce
The defective products of double glazing；In addition the fluid sealant for using at present is in the processing procedure of double glazing
In, it is cannot to be fully cured also without mechanical strength in the short time after the completion of gluing
, need to wait long period of time move the double glazing for completing gluing,
The speed of production of double glazing is thus leveraged.
Although also there is researcher's (as United States Patent (USP) 6355317) to propose to use at present
Polyurethane prepolymers are used as the main component of double glazing fluid sealant, and heat is plastic
Property macromolecule mixing, such as butyl rubber, epdm polymer etc., but be required to gold
The organotin contained in category salt STR2 or amines catalyst, especially this kind of fluid sealant
Class compound can be impacted to environment.
Content of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the invention provides a kind of
The double glazing superpower sealant of one-component solvent-free, the fluid sealant are complete in gluing
There is certain intensity after becoming, the instant movement after double glazing gluing can achieve,
And the intensity of the fluid sealant can be strengthened further after continuing to be positioned in the air, and have
Good mechanical strength, heat resistance, solvent resistance and moisture permeability.
The present invention in order to solve the technical scheme adopted by its technical problem is：
A kind of double glazing superpower sealant of one-component solvent-free, including following
Each component by weight：
20～65 parts of methyl diisocyanate hexichol prepolymer
40～60 parts of ethylene-vinyl acetate copolymer
Polyethylene 5-30 part；
The number-average molecular weight of the methyl diisocyanate hexichol prepolymer is
600～5000, and its be by diphenyl methane -4,4 '-diisocyanate (MDI) and
It is 2 that PEPA presses isocyano and the mol ratio of hydroxyl:1 polymerisation gained,
Wherein PEPA includes (CH2)nStructure, and n is 10～36；
The melt index of ethylene-vinyl acetate copolymer (EVA) is
20～400g/10min, and the chain link content of wherein vinylacetate is 19～40wt.%；
The methyl diisocyanate hexichol prepolymer, ethylene-vinyl acetate copolymerization
In thing and polyethylene (PE), contained crystallinity unit accounts for three's gross mass
10～50wt.%, the crystallinity unit refer to (CH2CH2) construction unit, specifically
In nail group diisocyanate hexichol prepolymer on PEPA part
CH2CH2Formed by ethylene copolymer in construction unit, ethylene-vinyl acetate copolymer
CH2CH2Construction unit and the CH of polyethylene2CH2Construction unit.
, by carboxylic acid and polymerization gained, wherein carboxylic acid is optional for the PEPA
With binary of fatty acids, the optional trihydroxylic alcohol of polyalcohol or tetrahydroxylic alcohol, such as glycerine, season
Penta tetrol etc., the formation of PEPA is by carboxylic acid and polyalcohol by conventional esterification
It is synthesized gained, the amount of the material of reactant can rubbing according to hydroxy-acid group and hydroxyl
You are calculated ratio, have on the molecule of each PEPA of end reaction gained
2～3 hydroxyls, are reacted using isocyano of the hydroxyl with MDI.Due to
The mol ratio of the isocyano on hydroxyl and MDI on PEPA is 2:1, because
Hydroxyl full entry reaction on this PEPA, and two on each MDI molecule
In individual isocyano, only one of which take part in reaction, and there remains an isocyano does not have
Participate in reaction.To sum up, have on the methyl diisocyanate hexichol prepolymer for ultimately forming
The end group for having reactivity is isocyano, and the isocyano of the end group does not adopt end-blocking
Agent is blocked, after gluing using in the air moisture and the terminal isocyanato
Reacted so that fluid sealant solidifies further.
The double glazing superpower sealant of one-component solvent-free, can also basis
Demand increases other components in the fluid sealant, its also include following by weight
Component：0～50 part of tackifying resin and 0～40 part of filling powder, wherein tackifying resin is
C5～C9Resin, phenolic resin, rosin resin and dcpd resin (DCPD)
In one kind, above-mentioned tackifying resin selects the tree of the conventional the above-mentioned type in fluid sealant field
Fat；Wherein described filling powder is the one kind in calcium carbonate and talcum powder, and this is filled out
The average grain diameter for filling powder is 10～25 μm.
The invention also discloses the shearing force after the fluid sealant foot of the hill 5min is
10～15kg/in2, the shearing force after gluing 12 weeks is 150～160kg/in2；Described close
The moisture permeability of sealing is 0.5～3.5g/m2·24h.
The fluid sealant is used for two pass envelope hollow glass structure glue, single track envelope double glazing
Fluid sealant and super spacing strip fluid sealant, as the moisture permeability of the fluid sealant is low,
Therefore can be carried out without common butyl sealant using when the fluid sealant
Seal together.
The method have the benefit that：Double glazing one-component of the present invention
Solvent-free superpower sealant has certain intensity after the completion of gluing, can be real
Instant movement after existing double glazing gluing；On methyl diisocyanate hexichol prepolymer
There is the isocyano for not participating in completely reacting react with the aqueous vapor of in the air, and continue
The intensity for continuing the fluid sealant after being positioned in the air can be strengthened further, the sealing in addition
In glue, crystallinity unit accounts for 10～50wt.% of three's gross mass, and the crystallinity unit is made
Fluid sealant mechanical property can be caused to strengthen for nucleus component, and with good heat-resisting
Property, solvent resistance and moisture permeability.
Specific embodiment
With reference to specific embodiment, the present invention is described in detail, but following enforcements
Example can not be used for limiting technical scheme.
Heretofore described methyl diisocyanate hexichol prepolymer is different from methyl two
Cyanate hexichol prepolymer prepolymer A and methyl diisocyanate hexichol prepolymer pre-
Polymers B.Wherein methyl diisocyanate hexichol prepolymer prepolymer A be by MDI
With polyester diol A according to isocyano and hydroxyl mol ratio be 2:1 polymerisation
Gained, wherein polyester diol A include (CH2)10Structure, the methyl two are different
The number-average molecular weight of cyanate hexichol prepolymer prepolymer A is 3000；Wherein pre-polymerization
Thing B be by MDI and polyester trihydroxylic alcohol B according to isocyano and the mol ratio of hydroxyl
For 2:1 polymerisation gained, wherein polyester trihydroxylic alcohol B include (CH2)36Knot
Structure, the number-average molecular weight of methyl diisocyanate hexichol prepolymer prepolymer B is
5000.
In the present invention, ethylene-vinyl acetate is Dupont from the trade mark
EVA28-400, Dupont EVA19-400 and France A Kema EVA40-55's
Commodity.Wherein the melt index of Dupont EVA28-400 be 400g/10min and
Wherein VA (i.e. vinylacetate) chain link content is 28%；Wherein Dupont
The melt index of EVA19-400 is 400g/10min and wherein VA (i.e. acetic acid second
Alkene ester) chain link content be 19%；The melting of wherein France A Kema EVA40-55 refers to
Number is for 55g/10min and wherein VA (i.e. vinylacetate) chain link content is 40%.
Heretofore described methyl diisocyanate hexichol prepolymer, ethyl vinyl acetate second
In enoate copolymer and polyethylene, contained crystallinity unit accounts for three's gross mass
10～50wt.%.
The reinforced resin adopted in the following embodiments of the present invention selects C5Resin, but simultaneously
Do not indicate that and be only capable of selecting C5Resin, it is with identical Efficient Adhesive Promotion and right to select
Isocyano in fluid sealant on methyl diisocyanate hexichol prepolymer for inert,
Do not affect the material of the fluid sealant crystallinity unit, such as can also from phenolic resin,
One kind in rosin resin and dcpd resin.
The filling powder that selects in the following embodiments of the present invention is calcium carbonate, its average grain diameter
For 20 μm, inert filling powder can also be selected, such as talcum powder etc., selected fill out
The average grain diameter for filling powder is 10～25 μm.
Specific embodiment 1
Methyl diisocyanate hexichol prepolymer A is 25 parts, and EVA 28-400 is
20 parts, EVA 19-400 is 20 parts, and PE is 5 parts, 20 parts of calcium carbonate, C5
10 parts of resin, obtains fluid sealant A.Two isocyanic acid of the methyl in fluid sealant A
Contained by ester hexichol prepolymer A, ethylene-vinyl acetate copolymer and polyethylene
Crystallinity unit CH2CH2Content accounts for the 40wt.% of three's gross mass.
Specific embodiment 2
Methyl diisocyanate hexichol prepolymer B is 20 parts, and EVA 40-55 is 10
Part, EVA 28-400 is 10 parts, and EVA 19-400 is 20 parts, and PE is 10 parts,
20 parts of calcium carbonate, C510 parts of resin, obtains fluid sealant B.In fluid sealant B
The methyl diisocyanate hexichol prepolymer B, ethylene-vinyl acetate copolymer
With contained crystallinity unit CH in polyethylene2CH2Content accounts for three's gross mass
35wt.%.
The detection method of the shearing force of the fluid sealant is：Prepare some groups of two panels
The aluminium flake of 1inch × 4inch size, by two aluminium flakes per group with of the present invention close
Sealing bonds, and the bond area between two aluminium flakes is 1inch × 1inch, respectively at
5min, 24h and after 12 weeks after gluing, with the speed of 200mm/min by two aluminium flakes
Drawn to both sides with 180 °, measured pulling force can be sheared with reference to bond area
Power；The detection of the fluid sealant moisture permeability is tested according to ASTM F1294
Measured by method.
Testing result is referring to following：
The testing result of fluid sealant A：The mechanical property of the fluid sealant is：Described close
Shearing force after sealing gluing 5min is 10kg/in2, shearing force after gluing 24h
For 50kg/in2, the shearing force after gluing 12 weeks is 150kg/in2；The fluid sealant
Moisture permeability is 3.0g/m2·24h.
The testing result of fluid sealant B：The mechanical property of the fluid sealant is：Described close
Shearing force after sealing gluing 5min is 15kg/in2, shearing force after gluing 24h
For 50kg/in2, the shearing force after gluing 12 weeks is 150kg/in2；The fluid sealant
Moisture permeability is 3.5g/m2·24h.
Shearing force of the fluid sealant of the present invention after gluing completes 5min be
10～15kg/in2, i.e., gluing complete and cool down after i.e. have certain mechanical strength, this
When complete the double glazing of gluing and can move immediately, and not close like used by prior art
The hardening time that sealing equally needs to wait for growing can just move double glazing very much, therefore can be big
The big manufacturing speed for improving double glazing, such as by one, per 8h, production 400 is hollow
The production line of the use silicone sealant of glass, uses instead after fluid sealant of the present invention i.e.
The efficiency of 600/8h is can reach, as American in fluid sealant of the present invention to be used in
GED production line then can reach the speed of 800/more than 8h.
Fluid sealant of the present invention operates more general double-component silicone resin in gluing
With thio resin can reduce in processing procedure because double-component mixed proportion not to or inequality drawn
The defective products for rising, and in the time after the completion of gluing, the fluid sealant is exposed to air
When middle, the isocyano on methyl diisocyanate hexichol prepolymer and sky in fluid sealant
Moisture in gas reacts to form solidification cross-linking products, and the solidification cross-linking products are caused
The mechanical strength of fluid sealant, heat resistance and solvent resistance all have enhancing, especially heat-resisting
Property in terms of, can be by hang the test of 450g weight, the fluid sealant gluing 12 at 60 DEG C
Shearing force after week is 150kg/in2, the shearing force after gluing 12 weeks is 150～160
kg/in2, it is greatly improved the yields of double glazing.In addition sealing of the present invention
Glue also has good aqueous vapor barrier property, and its moisture permeability (MVTR) is
0.5～3.5g/m224h, less than 4.0g/m2·24h
Sealant of the present invention is used for two pass envelope hollow glass structure glue, list
Road envelope insulating glass sealant stick and super spacing strip sealant.
The foregoing is only the preferred embodiments of the present invention.It should be pointed out that
In the case of the principle of the invention, also some improvement and modification can be made, all regard
For protection scope of the present invention.
Claims (10)
1. a kind of double glazing superpower sealant of one-component solvent-free, its are special
Levy and be：Including following each components by weight：
20～65 parts of methyl diisocyanate hexichol prepolymer
40～60 parts of ethylene-vinyl acetate copolymer
Polyethylene 5-30 part；
The number-average molecular weight of the methyl diisocyanate hexichol prepolymer is
600～5000, and its be by diphenyl methane -4,4 '-diisocyanate and polyester polyols
It is 2 that alcohol presses isocyano and the mol ratio of hydroxyl:1 polymerisation gained, wherein polyester
Polyalcohol includes (CH2)nStructure, and n is 10～36；
The melt index of the ethylene-vinyl acetate copolymer is
20～400g/10min, and the chain link content of wherein vinylacetate is 19～40wt.%；
The methyl diisocyanate hexichol prepolymer, ethylene-vinyl acetate copolymerization
In thing and polyethylene, contained crystallinity unit accounts for 10～50wt.% of three's gross mass.
2. double glazing according to claim 1 is superpower with one-component solvent-free
Sealant, it is characterised in that：Have on the molecule of each PEPA
2～3 hydroxyls.
3. double glazing according to claim 1 is superpower with one-component solvent-free
Sealant, it is characterised in that：The crystallinity unit is (CH2CH2) knot
Structure unit.
4. double glazing according to claim 1 is superpower with one-component solvent-free
Sealant, it is characterised in that：Also include following components by weight：0～50
Part tackifying resin and 0～40 part of filling powder.
5. double glazing according to claim 4 is superpower with one-component solvent-free
Sealant, it is characterised in that：The tackifying resin is C5～C9Resin, phenolic aldehyde
One kind in resin, rosin resin and dcpd resin.
6. double glazing according to claim 4 is superpower with one-component solvent-free
Sealant, it is characterised in that：The filling powder is in calcium carbonate and talcum powder
A kind of.
7. double glazing according to claim 5 is superpower with one-component solvent-free
Sealant, it is characterised in that：The average grain diameter of the filling powder is 10～25 μm.
8. double glazing according to claim 1 is superpower with one-component solvent-free
Sealant, it is characterised in that：Shearing force after the fluid sealant gluing 5min
For 10～15kg/in2, the shearing force after gluing 12 weeks is 150～160kg/in2.
9. double glazing according to claim 1 is superpower with one-component solvent-free
Sealant, it is characterised in that：The moisture permeability of the fluid sealant is
0.5～3.5g/m2·24h.
10. the double glazing according to any claim in claim 1 to 9
Application with the superpower sealant of one-component solvent-free, it is characterised in that：Described close
Sealing is used for two pass envelope hollow glass structure glue, single track envelope insulating glass sealant and surpasses
Level spacer bar fluid sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510524731.0A CN106479399B (en) | 2015-08-25 | The superpower sealant of hollow glass one-component solvent-free |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510524731.0A CN106479399B (en) | 2015-08-25 | The superpower sealant of hollow glass one-component solvent-free |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106479399A true CN106479399A (en) | 2017-03-08 |
| CN106479399B CN106479399B (en) | 2018-08-31 |
Family
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055024A (en) * | 2019-05-10 | 2019-07-26 | 无锡市万力粘合材料股份有限公司 | Hollow glass warms up side spacer bar polyurethane hot melt adhesive composite and preparation method thereof |
| CN112094606A (en) * | 2019-06-17 | 2020-12-18 | 李兴洙 | Binding composition for furniture molding having excellent binding power and oxidation resistance, and furniture molding material based on same |
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|---|---|---|---|---|
| US6355317B1 (en) * | 1997-06-19 | 2002-03-12 | H. B. Fuller Licensing & Financing, Inc. | Thermoplastic moisture cure polyurethanes |
| US20040180155A1 (en) * | 2003-03-13 | 2004-09-16 | Nguyen-Misra Mai T. | Moisture curable hot melt sealants for glass constructions |
| CN101818040A (en) * | 2010-04-01 | 2010-09-01 | 濮阳市万泉化工有限公司 | Fast-curing one-component polyurethane sealant and preparation method thereof |
| CN103087666A (en) * | 2013-03-05 | 2013-05-08 | 河南省科学院化学研究所有限公司 | Reactive type polyurethane hot-melt sealant |
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6355317B1 (en) * | 1997-06-19 | 2002-03-12 | H. B. Fuller Licensing & Financing, Inc. | Thermoplastic moisture cure polyurethanes |
| US20040180155A1 (en) * | 2003-03-13 | 2004-09-16 | Nguyen-Misra Mai T. | Moisture curable hot melt sealants for glass constructions |
| CN101818040A (en) * | 2010-04-01 | 2010-09-01 | 濮阳市万泉化工有限公司 | Fast-curing one-component polyurethane sealant and preparation method thereof |
| CN103087666A (en) * | 2013-03-05 | 2013-05-08 | 河南省科学院化学研究所有限公司 | Reactive type polyurethane hot-melt sealant |
Non-Patent Citations (3)
| Title |
|---|
| 詹中贤: "单组分湿固化聚氨酯热熔胶黏剂的研制", 《化学与黏合》 * |
| 詹中贤: "汽车内饰用反应型聚氨酯热熔胶的研制", 《聚氨酯工业》 * |
| 郭庆时 等: "中空玻璃密封胶的研究进展", 《化学建材》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110055024A (en) * | 2019-05-10 | 2019-07-26 | 无锡市万力粘合材料股份有限公司 | Hollow glass warms up side spacer bar polyurethane hot melt adhesive composite and preparation method thereof |
| CN112094606A (en) * | 2019-06-17 | 2020-12-18 | 李兴洙 | Binding composition for furniture molding having excellent binding power and oxidation resistance, and furniture molding material based on same |
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