CN109651999A - A kind of color inhibition weatherability high-strength polyurethane glue and preparation method thereof - Google Patents
A kind of color inhibition weatherability high-strength polyurethane glue and preparation method thereof Download PDFInfo
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- CN109651999A CN109651999A CN201811554933.XA CN201811554933A CN109651999A CN 109651999 A CN109651999 A CN 109651999A CN 201811554933 A CN201811554933 A CN 201811554933A CN 109651999 A CN109651999 A CN 109651999A
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- polycarbonate glycol
- polyurethane
- mass parts
- polyisocyanates
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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
- C09J175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- 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
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/288—Compounds containing at least one heteroatom other than oxygen or nitrogen
- C08G18/289—Compounds containing at least one heteroatom other than oxygen or nitrogen containing silicon
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4045—Mixtures of compounds of group C08G18/58 with other macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/44—Polycarbonates
-
- 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
-
- 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
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
Abstract
A kind of claimed color inhibition weatherability high-strength polyurethane glue; it is prepared by the raw material of following parts by weight: 75~120 mass parts of polyisocyanates; 100~200 mass parts of polycarbonate glycol; 2~10 mass parts of hydroxy-ethyl acrylate; 2~10 mass parts of epoxy resin; 20~60 mass parts of silane coupling agent, the polyisocyanates are isophorone diisocyanate IPDI.The present invention claims also disclose the preparation method of color inhibition weatherability high-strength polyurethane glue.EP-SPUA glue prepared by the present invention has excellent photostability, chemically-resistant pharmacological property and anti-yellowing property.
Description
Technical field
The present invention relates to technical field of organic chemistry, more specifically to a kind of high-intensitive poly- ammonia of color inhibition weatherability
Ester gum EP-SPUA glue and preparation method thereof.
Background technique
Domestic and international market mostly uses excess isocyanate to react under certain condition with polyester and polyether dihydric alcohol and is made poly-
Urethane glue has excellent chemical adhesive, is bonded with performance Zhuo in organic glass, metal, ceramics, polyester film and aluminium sheet
It writes, shows extensive market prospects.
However, there is also some defects and deficiencies, such as adhesive for polyurethane to contain isocyanate group for adhesive for polyurethane, it is right
Human body and environment have certain harm；Adhesive for polyurethane to the bondings of the materials such as glass, polyester film, metal, ceramics all
Silane coupling agent need to be used；Adhesive for polyurethane is inconvenient, and intensity is inadequate when high temperature；Adhesive for polyurethane curing rate is slow, and not
Color inhibition；Adhesive for polyurethane raw material has certain toxicity, not heatproof, and thermal stability is poor；The prior art mainly uses TDI, MDI.
TDI is more toxic；MDI-100 is solid, needs to refrigerate, self-crosslinking is also easy to produce after baking；
Summary of the invention
It is an object of the invention to solve the problems, such as the xanthochromia of polyurethane sealant, its intensity and weatherability are improved, is wanted simultaneously
Ask anti-pollution, the feature of environmental protection is good.
In order to solve these problems in currently available technology, the technical solution that first aspect present invention provides is: a kind of
Color inhibition weatherability high-strength polyurethane glue EP-SPUA glue, is prepared: polyisocyanates 75 by the raw material of following parts by weight
~120 mass parts, 100~200 mass parts of polycarbonate glycol, 2~10 mass parts of hydroxy-ethyl acrylate, epoxy resin 2~10
Mass parts, 20~60 mass parts of silane coupling agent.
Preferably, the polyisocyanates is aromatic isocyanate, aliphatic isocyanates or its mixing.More preferably
Ground, the polyisocyanates are isophorone diisocyanate (IPDI).
Preferably, the polycarbonate glycol is polycarbonate glycol CD210 or polycarbonate glycol CD205 or it is mixed
It closes；In the polycarbonate glycol, the weight ratio of polycarbonate glycol CD210 and polycarbonate glycol CD205 are 1-2:1-2.
Preferably, the silane coupling agent is silane resin acceptor kh-550.
Preferably, the epoxy resin is epoxy resin E51.
Second aspect of the present invention provides the preparation method of polyurethane adhesive EP-SPUA glue of the present invention, includes the following steps:
(1) polycarbonate glycol is weighed, is warming up to 100~120 DEG C, 1.5~2.5h is kept, is carried out dehydrating, is dehydrated
After the completion of processing, polycarbonate glycol CD210 and CD205 are cooled to 50 DEG C, sequentially add polycarbonate glycol
It is added in 50 DEG C of polyisocyanates, under the protection of nitrogen, 1.5~2.5h is reacted under conditions of 70~80 DEG C, poly- ammonia is made
Ester PU；
(2) polyurethane PU is mixed with hydroxy-ethyl acrylate, under the protection of nitrogen, under conditions of 70~80 DEG C
0.5~1.5h is reacted, polymerization of acrylic modified polyurethane PUA is obtained；
(3) the polymerization of acrylic modified polyurethane PUA is cooled to 40~55 DEG C, is mixed with silane coupling agent, in nitrogen
Protection under, under conditions of 40~55 DEG C react 0.5~1h, organic-silicon-modified PUA, i.e. SPUA is made；
(4) the organic-silicon-modified PUA is mixed with epoxy resin, under nitrogen protection, rises to 75~80 DEG C of reactions 0.5
Epoxy-modified SPUA, i.e. EP-SPUA is made in~1h.
Preferably, in step (1), polycarbonate glycol is polycarbonate glycol CD210 and polycarbonate glycol CD205
, and weight ratio is 1-2:1-2.
Preferably, in step (1), polycarbonate glycol CD210 and CD205 are successively sequentially added to 50 DEG C
In polyisocyanates.
Preferably, the preparation method of polyurethane adhesive EP-SPUA glue of the present invention, includes the following steps:
(1) mass parts are pressed, polycarbonate glycol CD210:50~100 part, polycarbonate glycol CD205:50~100 are weighed
Part, the two is warming up to 100~120 DEG C respectively, 1.5~2.5h is kept, is carried out dehydrating, after the completion of dehydration, will gather
Carbonate diol CD210 and CD205 are cooled to 50 DEG C, sequentially successively add polycarbonate glycol CD210 and CD205
It is added in the isophorone diisocyanate of 50 DEG C of 75~120 mass parts, it is anti-under conditions of 70~80 DEG C under the protection of nitrogen
1.5~2.5h is answered, polyurethane PU is made；
(2) polyurethane is mixed with the hydroxy-ethyl acrylate of 2~10 mass parts, under the protection of nitrogen, 70~
0.5~1.5h is reacted under conditions of 80 DEG C, obtains polymerization of acrylic modified polyurethane PUA；
(3) polymerization of acrylic modified polyurethane is cooled to 40~55 DEG C, the silane coupling agent with 20~60 mass parts
KH550 mixing reacts 0.5~1h under conditions of 40~55 DEG C, organic-silicon-modified PUA is made, i.e., under the protection of nitrogen
SPUA。
(4) the organic-silicon-modified PUA (SPUA) is mixed with the epoxy resin E51 of 2~10 mass parts, in nitrogen protection
Under, 75~80 DEG C of 0.5~1h of reaction are risen to, epoxy-modified SPUA, i.e. EP-SPUA is made.
The present invention has the advantage that
(1) polyurethane adhesive EP-SPUA glue prepared by the present invention makes preparation by introducing isophorone diisocyanate
EP-SPUA glue has excellent photostability, chemically-resistant pharmacological property and anti-yellowing property, and toxicity is slightly lower, and reactivity is larger；Together
When joined hydroxy-ethyl acrylate, enhance the water resistance of PU, light resistance and weatherability, improve reactivity, enhance glue
The rigidity of glutinous agent；Polycarbonate glycol has been selected, the weatherability and hydrolytic resistance of adhesive are improved.
(2) polyurethane adhesive EP-SPUA glue prepared by the present invention improves the intensity of SPUA, is easier to by introducing epoxy
Operation, storage.(EP-SPUA)；The addition of silane coupling agent improves the weatherability of PUA, solves the problems, such as without silane coupling agent.
(3) preparation method of the present invention is easy to operate, curing rate is fast, and cure shrinkage is small, energy saving.
Detailed description of the invention
Fig. 1 is the preparation method of one embodiment of the invention polyurethane adhesive EP-SPUA glue.
Specific embodiment
Above scheme is described further below in conjunction with specific embodiment.It should be understood that these embodiments are for illustrating
The present invention and be not limited to limit the scope of the invention.Implementation condition used in the examples can be done according to the condition of specific producer
Further adjustment, the implementation condition being not specified is usually the condition in routine experiment.
It introduces and summarizes
The present invention by way of example rather than provide the mode of limitation to be illustrated.It should be noted that in present disclosure
" one " or "an" embodiment is not necessarily referring to same specific embodiment, and refers at least a kind of.
Various aspects of the invention are described below.However, as will be readily apparent to one of skill in the art, it can
Only some or all of aspects according to the present invention implement the present invention.For purposes of illustration, provide herein specific number, material and
Configuration, enables one to thoroughly understand the present invention.However, those of skill in the art are evident that,
The present invention is without concrete details, that is, implementable.In other examples, many institutes have been omitted or simplified not make the present invention obscure
Known feature.
Various operations are successively described as multiple discrete steps, and with the side of the invention most helpful in understanding
Formula illustrates；However, in-order description should not be construed as to imply that these operations are necessarily dependent on sequence.
It will illustrate various embodiments according to the reactant of type species.Those of skill in the art will be shown and
It is clear to, any number of different types of reactant can be used to implement for the present invention, and be more than those for the purpose of illustration
And the reactant provided herein.In addition, also it is evident that, the invention is not limited to any specific mixing to show
Example.
Embodiment 1.
1. formula:
| Raw material | Mass parts |
| Isophorone diisocyanate IPDI | 100 |
| Polycarbonate glycol CD210 | 75 |
| Polycarbonate glycol CD205 | 75 |
| Hydroxy-ethyl acrylate | 5 |
| Epoxy resin E51 | 5 |
| Silane resin acceptor kh-550 | 45 |
2. carrying out the preparation of color inhibition weatherability high intensity EP-SPUA glue
(1) above-mentioned mass parts are pressed, weigh 75 parts of polycarbonate glycol CD210, it 75 parts of polycarbonate glycol CD205, will
The two is warming up to 100 DEG C respectively, keeps 1.5h, is carried out dehydrating, after the completion of dehydration, by polycarbonate glycol CD210
It is cooled to 50 DEG C with CD205, polycarbonate glycol CD210 and CD205 are successively sequentially added to 50 DEG C of 100 mass
In the isophorone diisocyanate of part, under the protection of nitrogen, 2h is reacted under conditions of 75 DEG C, polyurethane PU is made；
(2) polyurethane is mixed with the hydroxy-ethyl acrylate of 5 mass parts, under the protection of nitrogen, in 70 DEG C of item
0.5h is reacted under part, obtains polymerization of acrylic modified polyurethane PUA；
(3) polymerization of acrylic modified polyurethane is cooled to 45 DEG C, it is mixed with the Silane coupling agent KH550 of 45 mass parts
It closes, under the protection of nitrogen, reacts 0.5h under conditions of 45 DEG C, organic-silicon-modified PUA, i.e. SPUA is made.
(4) the organic-silicon-modified PUA (SPUA) is mixed with the epoxy resin E51 of 5 mass parts, under nitrogen protection,
75 DEG C of reaction 0.5h are risen to, epoxy-modified SPUA, i.e. EP-SPUA is made.
3. performance detection
Table 3.1. hydrothermal aging comparative test
| Test performance | Before aging | After aging |
| Color state | It is colorless and transparent | It is colorless and transparent |
| Tensile shear strength (aluminium-aluminium)/MPa | 12.08 | 11.98 |
| Tensile shear strength (steel-steel)/MPa | 12.43 | 12.39 |
| Light transmittance/% | 98.0 | 97.6 |
As can be seen from the above table after degradation, the weatherability of adhesive is preferable, reaches pre- in color and light transmittance
The effect of phase.Further analysis, the adhesive have good due to introducing IPDI (IPDI be aliphatic do not turn yellow isocyanates)
Good anti-yellowing property, the hydroxy-ethyl acrylate of addition, due to the presence of ammonia ester bond, slight degradation only occurs for segment, in light
It is highly stable according under, there is preferable mechanical performance and anti-yellowing property, it is highly stable in degradation；Polycarbonate glycol
With excellent weatherability and hydrolytic resistance.
Embodiment 2
1. formula:
| Raw material | Mass parts |
| Isophorone diisocyanate IPDI | 100 |
| Polycarbonate glycol CD210 | 75 |
| Polycarbonate glycol CD205 | 75 |
| Hydroxy-ethyl acrylate | 5 |
| Epoxy resin E51 | 8 |
| Silane resin acceptor kh-550 | 45 |
2. carrying out the preparation of color inhibition weatherability high intensity EP-SPUA glue
(1) mass parts are pressed, weigh CD210:75 parts of polycarbonate glycol, CD205:75 parts of polycarbonate glycol, by the two
Be warming up to 120 DEG C respectively, keep 2.5h, be carried out dehydrating, after the completion of dehydration, by polycarbonate glycol CD210 and
CD205 is cooled to 50 DEG C, and polycarbonate glycol CD210 and CD205 are successively sequentially added to 50 DEG C of 100 mass parts
Isophorone diisocyanate in, under the protection of nitrogen, react 2.5h under conditions of 80 DEG C, be made polyurethane PU；
(2) polyurethane is mixed with the hydroxy-ethyl acrylate of 5 mass parts, under the protection of nitrogen, in 80 DEG C of item
1.5h is reacted under part, obtains polymerization of acrylic modified polyurethane PUA；
(3) polymerization of acrylic modified polyurethane is cooled to 55 DEG C, it is mixed with the Silane coupling agent KH550 of 45 mass parts
It closes, under the protection of nitrogen, reacts 1h under conditions of 55 DEG C, organic-silicon-modified PUA, i.e. SPUA is made.
(4) the organic-silicon-modified PUA (SPUA) is mixed with the epoxy resin E51 of 8 mass parts, under nitrogen protection,
80 DEG C of reaction 1h are risen to, epoxy-modified SPUA, i.e. EP-SPUA. is made
Embodiment 3
In addition to the mass fraction of formula epoxy resin E51 is 10,2 phase of other components and content and preparation method and embodiment
Together.
Performance detection
Influence of the epoxy content to shear tension intensity
The addition of epoxy reduces molecule crosslink density when moisturecuring in single-component polyurethane adhesive, therefore, epoxy
Addition has a certain impact to the shear tension intensity of adhesive for polyurethane.According to GB/T7123 and GB/T7124, according to implementation
Example 1,2,3 measures the shear tension intensity of the EP-SPUA of different epoxy contents (relative to IPDI percentage composition), as follows:
Influence of the epoxy content to shear tension intensity under 3.1 high temperature of table
By table, the shear strength of the EP-SPUA of epoxy content 5%, 8% increases, explanation with the raising of epoxy content
It epoxy group open loop and is reacted under high temperature, increases the crosslink density of gluing agent molecule and increase intensity；And 10%
The EP-SPUA of epoxy content still has PART EPOXY group not react, intensity is lower since its epoxy content is higher.
Specific embodiment described above is only the preferred embodiment of the present invention, it is noted that for the art
For those of ordinary skill, without departing from the principle of the present invention, several improvement or replacement can also be made, these improvement
Or replacement should also be as being considered as protection scope of the present invention.
Claims (10)
1. a kind of color inhibition weatherability high-strength polyurethane glue, is prepared: polyisocyanates by the raw material of following parts by weight
75~120 mass parts, 100~200 mass parts of polycarbonate glycol, 2~10 mass parts of hydroxy-ethyl acrylate, epoxy resin 2~
10 mass parts, 20~60 mass parts of silane coupling agent.
2. polyurethane adhesive according to claim 1, which is characterized in that the polyisocyanates be aromatic isocyanate,
Aliphatic isocyanates or its mixing.
3. polyurethane according to claim 1, which is characterized in that the polyisocyanates is isophorone diisocyanate
Ester.
4. polyurethane adhesive according to claim 1, which is characterized in that stating polycarbonate glycol is polycarbonate glycol
CD210 or polycarbonate glycol CD205 or its mixing.
5. polyurethane adhesive according to claim 1, which is characterized in that in the polycarbonate glycol, polycarbonate glycol
The weight ratio of CD210 and polycarbonate glycol CD205 is 1-2:1-2.
6. polyurethane adhesive according to claim 1, which is characterized in that the silane coupling agent is silane coupling agent KH-
550。
7. polyurethane adhesive according to claim 1, which is characterized in that the epoxy resin is epoxy resin E51.
8. the preparation method of polyurethane adhesive described in any one of claim 1-7 claim, includes the following steps:
(1) polycarbonate glycol is weighed, is warming up to 100~120 DEG C, 1.5~2.5h is kept, is carried out dehydrating, dehydration
After the completion, polycarbonate glycol CD210 and CD205 are cooled to 50 DEG C, are sequentially added to polycarbonate glycol
In 50 DEG C of polyisocyanates, under the protection of nitrogen, 1.5~2.5h is reacted under conditions of 70~80 DEG C, polyurethane is made；
(2) polyurethane PU is mixed with hydroxy-ethyl acrylate, under the protection of nitrogen, is reacted under conditions of 70~80 DEG C
0.5~1.5h obtains polymerization of acrylic modified polyurethane；
(3) the polymerization of acrylic modified polyurethane PUA is cooled to 40~55 DEG C, is mixed with silane coupling agent, in the guarantor of nitrogen
Under shield, 0.5~1h is reacted under conditions of 40~55 DEG C, organic-silicon-modified PUA is made；
(4) the organic-silicon-modified PUA is mixed with epoxy resin, under nitrogen protection, rise to 75~80 DEG C reaction 0.5~
Polyurethane adhesive is made in 1h.
9. preparation method according to claim 8, which is characterized in that in step (1), polycarbonate glycol is polycarbonate
Glycol CD210's and polycarbonate glycol CD205, and weight ratio is 1-2:1-2.
10. preparation method according to claim 9, which is characterized in that in step (1), sequentially by polycarbonate
Glycol CD210 and CD205 are successively added in 50 DEG C of polyisocyanates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811554933.XA CN109651999A (en) | 2018-12-19 | 2018-12-19 | A kind of color inhibition weatherability high-strength polyurethane glue and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811554933.XA CN109651999A (en) | 2018-12-19 | 2018-12-19 | A kind of color inhibition weatherability high-strength polyurethane glue and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN109651999A true CN109651999A (en) | 2019-04-19 |
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ID=66115135
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| CN201811554933.XA Pending CN109651999A (en) | 2018-12-19 | 2018-12-19 | A kind of color inhibition weatherability high-strength polyurethane glue and preparation method thereof |
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Cited By (5)
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| CN110126379A (en) * | 2019-04-29 | 2019-08-16 | 江苏派恩新型材料有限公司 | A kind of precoated metal watt of high-strength and high-weather-resistance |
| CN110563918A (en) * | 2019-09-02 | 2019-12-13 | 福建国邦新材料有限公司 | Preparation method of modified grafted polyurethane resin |
| CN111393598A (en) * | 2020-03-27 | 2020-07-10 | 无锡市百合花胶粘剂厂有限公司 | Primer for addition type organic silicon rubber and preparation method thereof |
| CN113583616A (en) * | 2021-06-28 | 2021-11-02 | 美国Wefv技术控股集团有限公司 | Adhesive with high polymerization, strong adhesion and good weather resistance and preparation method thereof |
| CN114836162A (en) * | 2022-03-31 | 2022-08-02 | 郑春华 | Preparation method of modified polyurethane adhesive |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110126379A (en) * | 2019-04-29 | 2019-08-16 | 江苏派恩新型材料有限公司 | A kind of precoated metal watt of high-strength and high-weather-resistance |
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| CN111393598A (en) * | 2020-03-27 | 2020-07-10 | 无锡市百合花胶粘剂厂有限公司 | Primer for addition type organic silicon rubber and preparation method thereof |
| CN113583616A (en) * | 2021-06-28 | 2021-11-02 | 美国Wefv技术控股集团有限公司 | Adhesive with high polymerization, strong adhesion and good weather resistance and preparation method thereof |
| CN114836162A (en) * | 2022-03-31 | 2022-08-02 | 郑春华 | Preparation method of modified polyurethane adhesive |
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Application publication date: 20190419 |
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