CN105859977B - A kind of preparation method of organosilicon/acrylate/epoxy resin modification polyurethane - Google Patents
A kind of preparation method of organosilicon/acrylate/epoxy resin modification polyurethane Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F283/00—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G
- C08F283/006—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers provided for in C08G18/00
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- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/0804—Manufacture of polymers containing ionic or ionogenic groups
- C08G18/0819—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups
- C08G18/0823—Manufacture of polymers containing ionic or ionogenic groups containing anionic or anionogenic groups containing carboxylate salt groups or groups forming them
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- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G18/12—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step using two or more compounds having active hydrogen in the first polymerisation step
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/58—Epoxy resins
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- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6659—Compounds of group C08G18/42 with compounds of group C08G18/34
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- 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
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
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- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D151/00—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers
- C09D151/08—Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Coating compositions based on derivatives of such polymers grafted on to macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
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Abstract
The present invention provides a kind of organosilicon/acrylate/epoxy resin modification polyurethane preparation methods, including following operating procedure: polyalcohol, diisocyanate, dihydroxy carboxylic acids and chain extender step 1: being put into reaction kettle under a nitrogen；Step 2: base polyurethane prepolymer for use as obtained in step 1 is cooled to 45 DEG C hereinafter, organic amine, silane coupling agent, deionized water and diamine is added；Step 3: water phase is mutually added sequentially in the organic silicon modified polyurethane in step 2 with oil；Step 4: epoxy resin is added in the organosilicon/acrylate modified polyurethane in step 3.Pass through organosilicon, acrylate and epoxy resin successively modified polyurethane, organic silicon modified polyurethane increases the flexibility and water resistance of polyurethane, polymerization of acrylic modified polyurethane enhances the mechanical property of polyurethane, epoxy resin modification polyurethane improves the stability and caking property of polyurethane, to obtain the modified polyurethane with water resistance, high-tenacity and high stability.
Description
Technical field
The present invention relates to technical field of macromolecules more particularly to a kind of poly- ammonia of organosilicon/acrylate/epoxy resin modification
The preparation method of ester.
Background technique
With the enhancing of people's environmental consciousness, material safety problem is paid attention to.Polyurethane is with non-ignitable, smell is small, nothing
The advantages that malicious, pollution-free, energy saving, easy to operate, has been used as leather finishing agent, textile auxiliary, paper industry auxiliary agent, coating extensively
With adhesive etc., product is successfully applied to the industries such as light textile, leather, timber processing, building, papermaking.Especially in composite material
Field sprays on fabric after being mixed by polyurethane and functional material such as luminescent material, ultraviolet ray-resistant material etc., thus
Obtain function fabric.
But aqueous polyurethane uses water as solvent, the stability in storage or transportational process is poor, easily occurs
Lamination, caking property are poor.Moreover, since the surface tension of medium water is too big, gathering after aqueous polyurethane is in conjunction with substrate
Water resistance of the urethane after substrate surface film forming is poor hygroscopic, and forming a film, fastness is lower easily mutually to be separated with substrate, and after spraying
Product feel it is harder.
In view of this, it is necessary to polyurethane in the prior art be improved, to solve the above problems.
Summary of the invention
It is an object of the invention to disclose a kind of preparation method of organosilicon/acrylate/epoxy resin modification polyurethane,
To provide a kind of method for preparing the modified polyurethane with water resistance, high-tenacity and high stability.
To achieve the above object, the present invention provides a kind of organosilicon/acrylate/epoxy resin modification polyurethane systems
Preparation Method, including following operating procedure:
Step 1: polyalcohol, diisocyanate, dihydroxy carboxylic acids and chain extender are put into reaction kettle under a nitrogen atmosphere
In, reaction temperature is 70 DEG C~90 DEG C, and the reaction time is 2~4h；Continuation is put into the bis- hydroxymethyl propionic acids of 2,2-, third in a kettle
Ketone carries out chain extension end capping reaction, and reaction temperature is 50 DEG C~80 DEG C, and the reaction time is 2.5~4.5h, and base polyurethane prepolymer for use as is made；
Step 2: base polyurethane prepolymer for use as obtained in step 1 is cooled to 45 DEG C hereinafter, being added under stirring has
Machine amine is neutralized into salt, sequentially adds silane coupling agent, deionized water and diamine, is stirred to react 25~45min, is made organic
Silicon modified polyurethane；
Step 3: lauryl sodium sulfate is dissolved in deionized water as water phase, azodiisobutyronitrile is dissolved in propylene
As oily phase in esters of gallic acid monomer, water phase is mutually added sequentially in the organic silicon modified polyurethane in step 2 with oil, is stirred,
Then it is warming up to 70 DEG C~90 DEG C under a nitrogen atmosphere, reacts 5~6h, obtains organosilicon/acrylate modified polyurethane；
Step 4: epoxy resin is added in the organosilicon/acrylate modified polyurethane in step 3, stirring, water-bath
Heating, reaction temperature are 80 DEG C~90 DEG C, and the reaction time is 1~2h.
The parts by weight of polyalcohol in the step 1 are 30~60 parts, the parts by weight of diisocyanate are 5~10
Part, the parts by weight of dihydroxy carboxylic acids are 40~70 parts and the parts by weight of chain extender are 20~40 parts, 2,2- bis- methylols third
The parts by weight of acid are 2~4 parts, the parts by weight of acetone are 20~40 parts；
The parts by weight of base polyurethane prepolymer for use as in the step 2 are 30~60 parts, the parts by weight of organic amine be 40~
70 parts, the parts by weight of silane coupling agent be 3~4 parts, the weight that the parts by weight of deionized water are 20~50 parts and diamine
Number is 25~40 parts；
The parts by weight of lauryl sodium sulfate in the step 3 are 10~20 parts, the parts by weight of deionized water are
30~60, the parts by weight of azodiisobutyronitrile are 6~8 parts, the parts by weight of acrylic ester monomer are 10~30 parts, organic
The parts by weight of silicon modified polyurethane are 10~50 parts；
The parts by weight of epoxy resin in the step 4 are 10~30 parts, organosilicon/acrylate modified polyurethane
Parts by weight be 40~60 parts.
In some embodiments, the polyalcohol in the step 1 is that polyether polyol, polyester polyol, oligomer are more
First alcohol.
In some embodiments, the organic amine in the step 2 is selected from triethylamine or N, N- dimethylethanolamine.
In some embodiments, the silane coupling agent in the step 2 is selected from KH550, KH602 or KH792.
In some embodiments, the diamine in the step 2 is selected from ethylenediamine, hexamethylene diamine or isophorone diamine.
In some embodiments, the epoxy resin in the step 4 is selected from E-51, E-44, E-42 bisphenol-A epoxy tree
Rouge.
In some embodiments, the molecular weight of the polyalcohol in the step 1 is between 1000 to 3000.
In some embodiments, the dihydroxy carboxylic acids in the step 1 are dihydromethyl propionic acid or dihydroxymethyl fourth
Acid.
In some embodiments, the chain extender in the step 1 is the low molecular weight polyhydroxy that molecular weight is lower than 400
Compound.
Compared with prior art, the beneficial effects of the present invention are: successively being changed by organosilicon, acrylate and epoxy resin
Property polyurethane, organic silicon modified polyurethane increases the flexibility and water resistance of polyurethane, polymerization of acrylic modified polyurethane enhancing
The mechanical property of polyurethane, epoxy resin modification polyurethane improves the stability and caking property of polyurethane, to obtain one
Kind has the modified polyurethane of water resistance, high-tenacity and high stability, and modified polyurethane-coated is obtained on sample
Coated product has the characteristics that soft, water resistance is strong, adhesive fastness is high, ultimate strength is big.
Specific embodiment
The present invention is described in detail for each embodiment shown below, but it should be stated that, these embodiments
Not limitation of the present invention, those of ordinary skill in the art according to these embodiments made by function, method or structure
On equivalent transformation or substitution, all belong to the scope of protection of the present invention within.
Embodiment one:
A kind of preparation method of organosilicon/acrylate/epoxy resin modification polyurethane, including following operating procedure:
Step 1: polyalcohol, diisocyanate, dihydroxy carboxylic acids and chain extender are put into reaction kettle under a nitrogen atmosphere
In, reaction temperature is 70 DEG C~90 DEG C, and the reaction time is 2~4h；Continuation is put into the bis- hydroxymethyl propionic acids of 2,2-, third in a kettle
Ketone carries out chain extension end capping reaction, and reaction temperature is 50 DEG C~80 DEG C, and the reaction time is 2.5~4.5h, and base polyurethane prepolymer for use as is made；
Step 2: base polyurethane prepolymer for use as obtained in step 1 is cooled to 45 DEG C hereinafter, being added under stirring has
Machine amine is neutralized into salt, sequentially adds silane coupling agent, deionized water and diamine, is stirred to react 25~45min, is made organic
Silicon modified polyurethane；
Step 3: lauryl sodium sulfate is dissolved in deionized water as water phase, azodiisobutyronitrile is dissolved in propylene
As oily phase in esters of gallic acid monomer, water phase is mutually added sequentially in the organic silicon modified polyurethane in step 2 with oil, is stirred,
Then it is warming up to 70 DEG C~90 DEG C under a nitrogen atmosphere, reacts 5~6h, obtains organosilicon/acrylate modified polyurethane；
Step 4: epoxy resin is added in the organosilicon/acrylate modified polyurethane in step 3, stirring, water-bath
Heating, reaction temperature are 80 DEG C~90 DEG C, and the reaction time is 1~2h.
Wherein, the parts by weight of the polyalcohol in step 1 are 30 parts, the parts by weight of diisocyanate are 5 parts, dihydroxy
The parts by weight of yl carboxylic acid are 40 parts and the parts by weight of chain extender are 20 parts, and the parts by weight of 2,2- bis- hydroxymethyl propionic acids are 2
Part, the parts by weight of acetone be 20 parts.
The parts by weight of base polyurethane prepolymer for use as in step 2 are 30 parts, the parts by weight of organic amine are 40 parts, silane is even
The parts by weight for joining agent are 3 parts, the parts by weight of deionized water are 20 parts and the parts by weight of diamine are 25 parts；
The parts by weight of lauryl sodium sulfate in step 3 are 10 parts, the parts by weight of deionized water are 30, azo
The weight that the parts by weight of bis-isobutyronitrile are 6 parts, the parts by weight of acrylic ester monomer are 10 parts, organic silicon modified polyurethane
Number is 10 parts；
The parts by weight of epoxy resin in step 4 are 10 parts, the parts by weight of organosilicon/acrylate modified polyurethane
Number is 40 parts.
Polyalcohol in step 1 is polyether polyol, preferably polyoxypropyleneglycol, and dihydroxy carboxylic acids are dihydroxy first
Base propionic acid.Organic amine in step 2 is triethylamine, and silane coupling agent KH550, diamine is ethylenediamine.Step 3 acrylic acid
Esters monomer is acrylic acid AA.Epoxy resin in step 4 is E-51 bisphenol A epoxide resin.Point of polyalcohol in step 1
For son amount between 1000 to 3000, chain extender is the low-molecular-weight polyhydroxylated compound that molecular weight is lower than 400, preferably dihydroxy
Base ketone.
Embodiment two:
The present embodiment and the main distinction of embodiment one are:
The parts by weight of polyalcohol in the step 1 are 40 parts, the parts by weight of diisocyanate are 6 parts, dihydroxy
The parts by weight of carboxylic acid are 50 parts and the parts by weight of chain extender are 25 parts, and the parts by weight of 2,2- bis- hydroxymethyl propionic acids are 2.5
Part, the parts by weight of acetone be 25 parts；
The parts by weight of base polyurethane prepolymer for use as in the step 2 are 40 parts, the parts by weight of organic amine are 50 parts, silicon
The parts by weight of alkane coupling agent are 3.5 parts, the parts by weight of deionized water are 30 parts and the parts by weight of diamine are 30 parts；
The parts by weight of lauryl sodium sulfate in the step 3 are 13 parts, the parts by weight of deionized water are 40,
The parts by weight of azodiisobutyronitrile are 6.5 parts, the parts by weight of acrylic ester monomer are 15 parts, organic silicon modified polyurethane
Parts by weight be 20 parts；
The parts by weight of epoxy resin in the step 4 are 15 parts, the weight of organosilicon/acrylate modified polyurethane
Measuring number is 45 parts.
Polyalcohol in step 1 is polyester diol, and dihydroxy carboxylic acids are dimethylolpropionic acid.It is organic in step 2
Amine is N, and N- dimethylethanolamine, for silane coupling agent selected from KH602, diamine is hexamethylene diamine.Epoxy resin in step 4 is
E-44 bisphenol A epoxide resin.Step 3 acrylic ester monomer is methyl acrylate MA.
Embodiment three:
The present embodiment and the main distinction of embodiment one are:
The parts by weight of polyalcohol in step 1 are 50 parts, the parts by weight of diisocyanate are 9 parts, dihydroxy carboxylic acids
Parts by weight be the parts by weight of 60 parts and chain extender be 35 parts, the parts by weight of 2,2- bis- hydroxymethyl propionic acids are 3 parts, acetone
Parts by weight be 35 parts；
The parts by weight of base polyurethane prepolymer for use as in the step 2 are 50 parts, the parts by weight of organic amine are 60 parts, silicon
The parts by weight of alkane coupling agent are 3.8 parts, the parts by weight of deionized water are 40 parts and the parts by weight of diamine are 35 parts；
The parts by weight of lauryl sodium sulfate in the step 3 are 18 parts, the parts by weight of deionized water are 50,
The parts by weight of azodiisobutyronitrile are 7.5 parts, the parts by weight of acrylic ester monomer are 25 parts, organic silicon modified polyurethane
Parts by weight be 40 parts；
The parts by weight of epoxy resin in the step 4 are 25 parts, the weight of organosilicon/acrylate modified polyurethane
Measuring number is 55 parts.
Polyalcohol in step 1 is polyester diol.Silane coupling agent in step 2 is selected from KH792, and diamine is selected from
Isophorone diamine.Epoxy resin in step 4 is selected from E-42 bisphenol A epoxide resin.
Example IV:
The main distinction of the present embodiment and above-described embodiment is:
The parts by weight of polyalcohol in the step 1 are 60 parts, the parts by weight of diisocyanate are 10 parts, dihydroxy
The parts by weight of yl carboxylic acid are 70 parts and the parts by weight of chain extender are 40 parts, and the parts by weight of 2,2- bis- hydroxymethyl propionic acids are 4
Part, the parts by weight of acetone be 40 parts；
The parts by weight of base polyurethane prepolymer for use as in the step 2 are 60 parts, the parts by weight of organic amine are 70 parts, silicon
The parts by weight of alkane coupling agent are 4 parts, the parts by weight of deionized water are 50 parts and the parts by weight of diamine are 40 parts；
The parts by weight of lauryl sodium sulfate in the step 3 are 20 parts, the parts by weight of deionized water are 60,
The parts by weight of azodiisobutyronitrile are 8 parts, the parts by weight of acrylic ester monomer are 30 parts, organic silicon modified polyurethane
Parts by weight are 50 parts；
The parts by weight of epoxy resin in the step 4 are 30 parts, the weight of organosilicon/acrylate modified polyurethane
Measuring number is 60 parts.
Organosilicon/acrylate/epoxy resin modification polyurethane that embodiment 1-4 is obtained is tested for the property, wherein
Control group is without organosilicon/acrylate/epoxy resin modification polyurethane, and test result is as shown in table 1:
Organosilicon/acrylate/epoxy resin modification polyurethane that embodiment 1-4 is obtained is sprayed on sample respectively,
Quantity for spray is 240g/m2, 2min is pressed, is tested after 48 hours.Wherein, sample can be knitted fabric, woven fabric or nonwoven
Cloth, control group are the sample without surveying organosilicon/acrylate/epoxy resin modification polyurethane coating, test result such as table 2
It is shown.
As can be seen from Table 1 and Table 2, compared with non-modified polyurethane, by organosilicon, acrylate, asphalt mixtures modified by epoxy resin
Successively modified polyurethane has preferable flexibility, water resistance, mechanical property, stability and caking property to rouge.By organosilicon/
After acrylate/epoxy resin modification polyurethane-coated is on the samples such as knitted fabric, woven fabric or non-woven fabrics, the sample after coating
The various performances of product are improved relative to the sample for coating unmodified polyurethane, and specifically, the feel of coated product is more
Softness, water resistance is stronger, ultimate strength increases, adhesive fastness is more preferable.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (9)
1. a kind of organosilicon/acrylate/epoxy resin modification polyurethane preparation method, which is characterized in that including grasping as follows
Make step:
Step 1: polyalcohol, diisocyanate, dihydroxy carboxylic acids and chain extender are put into reaction kettle under a nitrogen atmosphere, instead
Answering temperature is 70 DEG C~90 DEG C, and the reaction time is 2~4h；Continuation be put into a kettle the bis- hydroxymethyl propionic acids of 2,2-, acetone into
Row chain extension end capping reaction, reaction temperature are 50 DEG C~80 DEG C, and the reaction time is 2.5~4.5h, and base polyurethane prepolymer for use as is made；
The parts by weight of polyalcohol in the step 1 are 30~60 parts, the parts by weight of diisocyanate are 5~10 parts, two
The parts by weight of hydroxycarboxylic acid are 40~70 parts and the parts by weight of chain extender are 20~40 parts, the weight of 2,2- bis- hydroxymethyl propionic acids
Amount number is 2~4 parts, the parts by weight of acetone are 20~40 parts；
Step 2: base polyurethane prepolymer for use as obtained in step 1 is cooled to 45 DEG C hereinafter, organic amine is added under stirring
It is neutralized into salt, sequentially adds silane coupling agent, deionized water and diamine, is stirred to react 25~45min, obtained organosilicon changes
Property polyurethane；
The parts by weight of base polyurethane prepolymer for use as in the step 2 are 30~60 parts, the parts by weight of organic amine are 40~70
Part, the parts by weight of silane coupling agent be 3~4 parts, the parts by weight that the parts by weight of deionized water are 20~50 parts and diamine
Number is 25~40 parts；
Step 3: lauryl sodium sulfate is dissolved in deionized water as water phase, azodiisobutyronitrile is dissolved in acrylate
As oily phase in class monomer, water phase is mutually added sequentially in the organic silicon modified polyurethane in step 2 with oil, is stirred, then
It is warming up to 70 DEG C~90 DEG C under a nitrogen atmosphere, reacts 5~6h, obtains organosilicon/acrylate modified polyurethane；
The parts by weight of lauryl sodium sulfate in the step 3 are 10~20 parts, the parts by weight of deionized water be 30~
60, the parts by weight of azodiisobutyronitrile are 6~8 parts, the parts by weight of acrylic ester monomer are 10~30 parts, organosilicon changes
Property polyurethane parts by weight be 10~50 parts；
Step 4: epoxy resin being added in the organosilicon/acrylate modified polyurethane in step 3, stirring, heating water bath,
Reaction temperature is 80 DEG C~90 DEG C, and the reaction time is 1~2h；
The parts by weight of epoxy resin in the step 4 are 10~30 parts, the weight of organosilicon/acrylate modified polyurethane
Measuring number is 40~60 parts.
2. organosilicon/acrylate according to claim 1/epoxy resin modification polyurethane preparation method, feature
It is, the polyalcohol in the step 1 is polyether polyol or polyester polyol or oligomer polyol.
3. organosilicon/acrylate according to claim 1/epoxy resin modification polyurethane preparation method, feature
It is, the organic amine in the step 2 is selected from triethylamine or N, N- dimethylethanolamine.
4. organosilicon/acrylate according to claim 1/epoxy resin modification polyurethane preparation method, feature
It is, the silane coupling agent in the step 2 is selected from KH550 or KH602 or KH792.
5. organosilicon/acrylate according to claim 1/epoxy resin modification polyurethane preparation method, feature
It is, the diamine in the step 2 is selected from ethylenediamine or hexamethylene diamine or isophorone diamine.
6. organosilicon/acrylate according to claim 1/epoxy resin modification polyurethane preparation method, feature
It is, the epoxy resin in the step 4 is selected from E-51 or E-44 or E-42 bisphenol A epoxide resin.
7. organosilicon/acrylate according to claim 1/epoxy resin modification polyurethane preparation method, feature
It is, the molecular weight of the polyalcohol in the step 1 is between 1000 to 3000.
8. organosilicon/acrylate according to claim 1/epoxy resin modification polyurethane preparation method, feature
It is, the dihydroxy carboxylic acids in the step 1 are dihydromethyl propionic acid or dimethylolpropionic acid.
9. organosilicon/acrylate according to claim 1/epoxy resin modification polyurethane preparation method, feature
It is, the chain extender in the step 1 is the low-molecular-weight polyhydroxylated compound that molecular weight is lower than 400.
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| CN111440285A (en) * | 2020-01-20 | 2020-07-24 | 长安大学 | Preparation method of organic silicon/polyurethane/bismaleimide modified epoxy resin |
| CN117531469B (en) * | 2023-10-16 | 2024-06-11 | 南雄市沃太化工有限公司 | Waterproof polyurethane acrylate composite material and preparation device thereof |
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