CN107987782A - A kind of preparation method of aspartate casting glue - Google Patents
A kind of preparation method of aspartate casting glue Download PDFInfo
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- CN107987782A CN107987782A CN201711445934.6A CN201711445934A CN107987782A CN 107987782 A CN107987782 A CN 107987782A CN 201711445934 A CN201711445934 A CN 201711445934A CN 107987782 A CN107987782 A CN 107987782A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/08—Polyurethanes from polyethers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/06—Polyurethanes from polyesters
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention belongs to sealing product manufacture field, and in particular to a kind of preparation method of aspartate casting glue.Step is as follows：Take component A and B component according to weight ratio be 1:0.6 2.0 are mixed, and are uniformly mixing to obtain the aspartate casting glue；Wherein, the component A contains the polyaspartic ester resin of 10 100 parts by weight and the polyalcohol of 1 90 parts by weight；The B component contains the polyisocyanates of 2 100 parts by weight and the blocked isocyanate performed polymer of 1 100 parts by weight.Obtained casting glue can need not add solvent in coating application；High-solid lower-viscosity, has more excellent rate of drying；Can room temperature even low-temperature setting, without heating, it is easy for construction.High flexibility, wearability and the cohesiveness that cured glue body has.Compared to simple encapsulating polyurethane, the rate of drying of casting glue, hardness, intensity are all significantly improved；Therefore there is great market prospects and economic value.
Description
Technical field
The invention belongs to sealing product manufacture field, and in particular to a kind of preparation method of aspartate casting glue.
Background technology
It is well known that casting glue is the bonding for electronic component, and sealing, a kind of glue that embedding and coating are protected.
Casting glue belongs to liquid before uncured, have a mobility, and glue viscosity is according to the material of product, performance, production technology
It is different and otherwise varied.Casting glue could realize its use value after being fully cured, and can be played after curing waterproof and dampproof, anti-
Dirt, insulation, heat conduction, secrecy, anticorrosion, heatproof, shockproof effect.Electron pouring sealant species is very more, divides from material type,
At present using at most most common predominantly 3 kinds, i.e. epoxy resin embedding adhesive, organic siliconresin casting glue, polyurethane pouring sealant.
And polyurethane pouring sealant main component is aromatic diisocyanate and polyether polyol in catalyst situation at present
Lower crosslinking curing, forms high polymer, and such casting glue weatherability is poor, not color inhibition, can be faded afterwards using long.Room temperature
Curing needs to add catalyst or needs to be heating and curing.And combined using general aliphatic isocyanates with the two-component of polyethers
Material is then resistant to Huang, can be used as transparent outdoor embedding, but but there are the shortcomings that slow drying speed.The double groups of traditional epoxy type
Part casting glue is generally rigid embedding, it is difficult to elastic embedding is made, and also the easy xanthochromia of general epoxy resin, poor toughness.
Therefore a kind of product resistance to oxidation, the preparation side for the aspartate casting glue that toughness is strong, elastic effect is good are found
Method, is this area thing very urgent at present.
The content of the invention
For this reason, the technical problems to be solved by the invention are to overcome the prior art to be difficult to realize elastic embedding, and generally
Resin easily aoxidize the technical bottlenecks such as flavescence, poor toughness, so as to propose a kind of preparation method of aspartate casting glue.
In order to solve the above technical problems, the invention discloses a kind of preparation method of aspartate casting glue, it is described
Method and step is as follows：
Take component A and B component according to weight ratio be 1:0.6-2.0 is mixed, and is uniformly mixing to obtain the asparagine
Acid esters casting glue；Wherein, the component A contain 10-100 parts by weight polyaspartic ester resin and 1-90 parts by weight it is more
First alcohol；The B component contains the polyisocyanates of 2-100 parts by weight and the blocked isocyanate performed polymer of 1-100 parts by weight.
Preferably, the aspartate resin structure general formula is：
Wherein, R is alkyl, and X is straight chain or cyclic carbon chain structure.
Preferably, the polyisocyanates is that degree of functionality is 2.0-3.5.
Preferably, the polyisocyanates is the isocyanate-monomer containing Liang Ge NCO functional groups or dimer or three
Aggressiveness.
Preferably, the isocyanate-monomer is toluene di-isocyanate(TDI), isophorone diisocyanate, diphenyl methane
At least one of diisocyanate, dicyclohexyl methyl hydride diisocyanate or hexamethylene diisocyanate.
Preferably, the monomer or mixed that the end-blocking polyisocyanic acid performed polymer forms for polyisocyanates with polyol
Compound.
Preferably, the degree of functionality of the blocked polyisocyanates performed polymer is 2.0-2.5.
Preferably, the polyalcohol is polyoxypropyleneglycol, polyoxypropylene polyol, alcohol PolyTHF binary
One kind in alcohol, tetrahydrofuran-propylene oxide copolymer glycols, polycaprolactone glycol or polyester polyol.
Preferably, the component A is also containing defoamer, levelling agent, catalyst.
It is more highly preferred to, the catalyst is at least one of organic mercury, organo-bismuth, organotin.
The above technical solution of the present invention has the following advantages over the prior art：The present invention uses the poly- day of high-solid lower-viscosity
For L-aminobutanedioic acid ester as matrix resin using the polyisocyanates of same high-solid lower-viscosity as curing agent, coating application can be without addition
Solvent；High-solid lower-viscosity, has more excellent rate of drying；Can room temperature even low-temperature setting, without heating, it is easy for construction.Gu
High flexibility, wearability and the cohesiveness that colloid has after change；Compared to simple encapsulating polyurethane, polyaspartic ester is added
After resin, rate of drying, hardness, the intensity everyway of casting glue are significantly improved, and indices are all usable poly-
Aspartate is freely adjusted；Therefore there is great market prospects and economic value.
Embodiment
Embodiment
Embodiment 1 is present embodiment discloses a kind of preparation method of aspartate casting glue, and the coating is including such as
Lower component：
Component A
98.2 parts by weight of polyaspartic ester resin；
0.2 parts by weight of defoamer；
B component
85 parts by weight of hexamethylene diisocyanate trimer (isocyanate group content 23%)；
15 parts by weight of dicyclohexyl methyl hydride diisocyanate；
By component A and B component proportionally 1：0.65 is uniformly mixed mixing, then constructs.
Embodiment 2 is present embodiment discloses a kind of preparation method of aspartate casting glue, and the coating is including such as
Lower component：
Component A
98.2 parts by weight of polyaspartic ester resin；
0.2 parts by weight of defoamer；
B component
Dicyclohexyl methyl hydride diisocyanate and 5000 molecular weight polyoxyethylene propylene trihydroxylic alcohols reaction blocked isocyanate are (different
Cyanic acid ester group content 1.52) 64 parts by weight；
36 parts by weight of dicyclohexyl methyl hydride diisocyanate；
By component A and B component proportionally 1：1.27 are uniformly mixed mixing, then construct.
Embodiment 3 is present embodiment discloses a kind of preparation method of aspartate casting glue, and the coating is including such as
Lower component：
Component A
B component
Dicyclohexyl methyl hydride diisocyanate and 5000 molecular weight polyoxyethylene propylene trihydroxylic alcohols reaction blocked isocyanate are (different
Cyanic acid ester group content 1.52) 64 parts by weight；
36 parts by weight of dicyclohexyl methyl hydride diisocyanate；
By component A and B component proportionally 1：1.14 are uniformly mixed mixing, then construct.
Embodiment 4 is present embodiment discloses a kind of preparation method of aspartate casting glue, and the coating is including such as
Lower component：
Component A
B component
Isophorone diisocyanate and 2000 molecular weight polyester diol reactions are into blocked isocyanate (isocyanate group
Content 3.4) 50 parts by weight；
10 parts by weight of dicyclohexyl methyl hydride diisocyanate；
40 parts by weight of hexamethylene diisocyanate (isocyanate group content 23)；
By component A and B component proportionally 1:1.7 are uniformly mixed mixing, then construct.
The A of any one of embodiment 1-4, B component are uniformly mixed, prepare the paint film of 3-5mm thickness；As a result it is as follows
| Surface drying time (GB/T7193.6-1987) | Hardness (GB/T531-1999) | |
| Embodiment 1 | 15 minutes | Shao D80 |
| Embodiment 2 | 40 minutes | Shao D70 |
| Embodiment 3 | 3 it is small when | Shao A70 |
| Embodiment 4 | 2 it is small when | Shao D40 |
What deserves to be explained is polyaspartic ester is a kind of aliphatic compound with secondary amine of high-solid lower-viscosity.Phase
Than general hydroxy resin and epoxy resin, there is more excellent rate of drying and lower VOC emission amount.Asparatate
The isocyanates collocation of the elastic polyurethane type of ester and high-solid lower-viscosity uses, can be in room temperature even low-temperature setting, cured glue body
High flexibility, wearability and the cohesiveness having.Compared to simple encapsulating polyurethane, using polyaspartic ester resin, fill
Rate of drying, hardness, the intensity everyway of sealing are significantly improved, and poly-aspartic-acid all can be used in indices
Ester is freely adjusted.The present invention prepares a kind of asparatate by the improvement to asparatate ester paint and hardener formula
Ester casting glue, toughness is strong, is not easy yellowing, has great invention meaning.
Obviously, the above embodiments are merely examples for clarifying the description, and the restriction not to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in the protection domain of the invention.
Claims (10)
1. a kind of preparation method of aspartate casting glue, it is characterised in that the method step is as follows：
Take component A and B component according to weight ratio be 1:0.6-2.0 is mixed, and is uniformly mixing to obtain the aspartate
Casting glue；Wherein, the component A contain 10-100 parts by weight polyaspartic ester resin and 1-90 parts by weight it is polynary
Alcohol；The B component contains the polyisocyanates of 2-100 parts by weight and the blocked isocyanate performed polymer of 1-100 parts by weight.
2. preparation method as claimed in claim 1, it is characterised in that the aspartate resin structure general formula is：
Wherein, R is alkyl, and X is straight chain or cyclic carbon chain structure.
3. preparation method as claimed in claim 2, it is characterised in that the polyisocyanates is that degree of functionality is 2.0-3.5.
4. preparation method as claimed in claim 3, it is characterised in that the polyisocyanates is to contain two NCO functions
The isocyanate-monomer or dimer or tripolymer of group.
5. preparation method as claimed in claim 4, it is characterised in that the isocyanate-monomer for toluene di-isocyanate(TDI),
Isophorone diisocyanate, methyl diphenylene diisocyanate, dicyclohexyl methyl hydride diisocyanate or hexa-methylene two are different
At least one of cyanate.
6. preparation method as claimed in claim 5, it is characterised in that the end-blocking polyisocyanic acid performed polymer is polyisocyanates
The monomer or mixture formed with polyol.
7. preparation method as claimed in claim 6, it is characterised in that the degree of functionality of the blocked polyisocyanates performed polymer is
2.0-2.5。
8. preparation method as claimed in claim 7, it is characterised in that the polyalcohol is polyoxypropyleneglycol, polyoxygenated
Propylene polyalcohol, alcohol PolyTHF dihydric alcohol, tetrahydrofuran-propylene oxide copolymer glycols, polycaprolactone glycol or polyester are more
One kind in first alcohol.
9. preparation method as claimed in claim 8, it is characterised in that the component A is also containing defoamer, levelling agent, catalysis
Agent.
10. preparation method as claimed in claim 9, it is characterised in that the catalyst is organic mercury, organo-bismuth, organotin
At least one of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711445934.6A CN107987782A (en) | 2017-12-27 | 2017-12-27 | A kind of preparation method of aspartate casting glue |
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| CN201711445934.6A CN107987782A (en) | 2017-12-27 | 2017-12-27 | A kind of preparation method of aspartate casting glue |
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| CN201711445934.6A Pending CN107987782A (en) | 2017-12-27 | 2017-12-27 | A kind of preparation method of aspartate casting glue |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468111A (en) * | 2018-10-26 | 2019-03-15 | 株洲时代电气绝缘有限责任公司 | A kind of viscoelastic polyurethane gum deposit and preparation method thereof based on poly- asparagus fern door propylhomoserin ester |
| CN110256996A (en) * | 2019-06-19 | 2019-09-20 | 上海汉司实业有限公司 | A kind of asparatate ester type polyurea adhesive and preparation method thereof |
| CN113122175A (en) * | 2021-04-27 | 2021-07-16 | 深圳飞扬骏研新材料股份有限公司 | Preparation method of elastic polyaspartic ester pouring sealant and product thereof |
| CN115368863A (en) * | 2022-09-26 | 2022-11-22 | 深圳飞扬骏研新材料股份有限公司 | Heat-resistant high-resilience asparagus polyurea pouring sealant and preparation method thereof |
| CN117645858A (en) * | 2024-01-29 | 2024-03-05 | 山东世纪联合新材料科技有限公司 | Zero yellowing glue material and preparation method and application thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109468111A (en) * | 2018-10-26 | 2019-03-15 | 株洲时代电气绝缘有限责任公司 | A kind of viscoelastic polyurethane gum deposit and preparation method thereof based on poly- asparagus fern door propylhomoserin ester |
| CN109468111B (en) * | 2018-10-26 | 2021-05-14 | 株洲时代电气绝缘有限责任公司 | Polyurethane adhesive based on polyaspartic acid ester and preparation method thereof |
| CN110256996A (en) * | 2019-06-19 | 2019-09-20 | 上海汉司实业有限公司 | A kind of asparatate ester type polyurea adhesive and preparation method thereof |
| CN113122175A (en) * | 2021-04-27 | 2021-07-16 | 深圳飞扬骏研新材料股份有限公司 | Preparation method of elastic polyaspartic ester pouring sealant and product thereof |
| CN113122175B (en) * | 2021-04-27 | 2022-04-29 | 深圳飞扬骏研新材料股份有限公司 | Preparation method of elastic polyaspartic ester pouring sealant and product thereof |
| CN115368863A (en) * | 2022-09-26 | 2022-11-22 | 深圳飞扬骏研新材料股份有限公司 | Heat-resistant high-resilience asparagus polyurea pouring sealant and preparation method thereof |
| CN115368863B (en) * | 2022-09-26 | 2024-01-30 | 深圳飞扬骏研新材料股份有限公司 | Heat-resistant high-resilience asparagus polyurea pouring sealant and preparation method thereof |
| CN117645858A (en) * | 2024-01-29 | 2024-03-05 | 山东世纪联合新材料科技有限公司 | Zero yellowing glue material and preparation method and application thereof |
| CN117645858B (en) * | 2024-01-29 | 2024-05-31 | 山东世纪联合新材料科技有限公司 | Zero yellowing glue material and preparation method and application thereof |
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Application publication date: 20180504 |