CN108503757A - A kind of VPI impregnation technologies low viscosity unsaturated polyester resin and its application - Google Patents
A kind of VPI impregnation technologies low viscosity unsaturated polyester resin and its application Download PDFInfo
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- CN108503757A CN108503757A CN201810144614.5A CN201810144614A CN108503757A CN 108503757 A CN108503757 A CN 108503757A CN 201810144614 A CN201810144614 A CN 201810144614A CN 108503757 A CN108503757 A CN 108503757A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- 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
- C08F283/01—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to unsaturated polyesters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/52—Polycarboxylic acids or polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/676—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds in which at least one of the two components contains aliphatic unsaturation
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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
- 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
- C09D4/00—Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond ; Coating compositions, based on monomers of macromolecular compounds of groups C09D183/00 - C09D183/16
- C09D4/06—Organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups C09D159/00 - C09D187/00
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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
- 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
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
Abstract
The invention discloses a kind of VPI impregnation technologies low viscosity unsaturated polyester resin, raw material composition includes：30~40 parts of polyacid；20~30 parts of chain polyalcohol；5~15 parts of cyclic polyols；10~30 parts of diluent；0.01~0.5 part of stabilizer；The carbon atom number of the chain polyalcohol is 2~5；The cyclic polyols are selected from least one of 12 carbon dimethanol of tricyclic, the spiroglycol, cyclohexanediol, cyclohexanedimethanol；The molal weight of the cyclic polyols is the 10~25% of chain polyalcohol molal weight.The wind-driven generator VPI impregnating resin fugitive constituents that the low viscosity unsaturated polyester resin and epoxy resin, curing agent, curing accelerator, crosslinking agent etc. are mixed to get are small, and dielectric loss is low, and adhesion strength, impact strength are high, and storage stability is excellent.
Description
Technical field
The present invention relates to the technical fields of insulating resin, and in particular to a kind of VPI impregnation technologies are poly- with low viscosity unsaturation
Ester resin and its application.
Background technology
Environmentally friendly low-carbon and it is energy-saving be today's society economic development two important themes.Wind energy have clean environment firendly,
It renewable, the features such as amount of accumulateing is huge and widely distributed, is more and more develop and useedd.In recent years, in national related political affairs
Under the support energetically of plan, the wind-powered electricity generation cause in China is rapidly developed.The newly-increased installed capacity of wind-driven power in the whole world in 2016 is 54.6GW,
Total installation of generating capacity reaches 486.8GW, and China becomes the first big market of global wind-power electricity generation.
Environmental protection, low dielectric loss, heat-resist, high cohesive force, stable storing, good manufacturability are wind-driven generator VPI
The general requirement of impregnating resin.Wind-driven generator insulating impregnating varnish by the past recent two decades development, gradually formed with
Modified unsaturated polyester resin+reactive diluent system, two big system of high-purity epoxy+liquid anhydride system.Unsaturated polyester (UP)
Heat resistance height, good mechanical property, but cure shrinkage is big, poor toughness；Epoxy resin has higher rigidity and tensile strength, but viscous
Degree is big, heat resistance is limited, hardening time is long.Development and application experience according to insulating impregnating varnish in China can sum up with
Lower R＆D direction：(1) base resin will also be based on unsaturated polyester (UP) and epoxy.(2) modification of unsaturated polyester (UP), it is comprehensive to improve its
Close heat, mechanical property.(3) application of novel crosslinker, reduces environmental pollution.The present invention opens mainly to unsaturated polyester modified
Send out to have both the environment-friendly unsaturated polyester resin suitable for wind-driven generator of low viscosity and high intensity a kind of.
Invention content
The present invention is directed to the problems of the prior art, provides a kind of low viscosity unsaturated polyester resin, viscosity and waves
The content for sending out part is relatively low, and Good Heat-resistance；Using the VPI impregnating resins used for wind power generation that it is prepared as base material, have resistance to
The feature that hot grade is high, adhesion strength is high, and excellent tenacity, impact strength greatly improve.
Specific technical solution is as follows：
A kind of VPI impregnation technologies low viscosity unsaturated polyester resin, in parts by mass, low viscosity unsaturated polyester resin
Raw material composition include：
The carbon atom number of the chain polyalcohol is 2~5；
The cyclic polyols are selected from 12 carbon dimethanol (molecular formula C of tricyclic12H20O2), (molecular formula is the spiroglycol
C15H28O6), cyclohexanediol (molecular formula C6H12O2), cyclohexanedimethanol (molecular formula C8H16O2At least one of)；
The molal weight of the cyclic polyols is the 10~25% of chain polyalcohol molal weight.
The viscosity of the modification low viscosity unsaturated polyester resin prepared with above-mentioned raw materials is 400~500 seconds/23 DEG C, and (No. 4 viscous
Spend cup), acid value is 20~25mgKOH/g.
The present invention by by the cyclic polyols of the chain polyalcohol of above-mentioned specific carbon atom number and special construction specific
It is used in combination under proportional region, mobility, heat resistance and the mechanical property of the unsaturated polyester (UP) of preparation can be improved simultaneously, to
Obtain the unsaturated polyester resin of low viscosity, high heat-resisting, high intensity and high tenacity.
Preferably, the chain polyalcohol is selected from neopentyl glycol, ethylene glycol, propylene glycol, diglycol, methyl-prop
At least one of glycol, butanediol；Further preferably in neopentyl glycol, propylene glycol, diglycol, ethylene glycol extremely
Few one kind.
Preferably, the cyclic polyols are selected from 12 carbon dimethanol of tricyclic, the spiroglycol, cyclohexanediol, hexamethylene
At least one of dimethanol.
Preferably, the polyacid is selected from M-phthalic acid, succinic acid, glutaric acid, adipic acid, maleic acid, suitable
At least one of anhydride maleique, fumaric acid, phthalic anhydride, methyl tetrahydro phthalic anhydride, methylnadic anhydride；Into
One step is preferably at least one of M-phthalic acid, maleic anhydride, phthalic anhydride, fumaric acid.
The diluent that the present invention uses, it is good to unsaturated-resin dissolubility containing unsaturated double-bond, and participate in crosslinking curing
Reaction, the VOC generated in hot setting are small.Preferably, the diluent is selected from lauryl methacrylate, neopentyl glycol
Diacrylate, tri (propylene glycol) diacrylate, 1,6 hexanediol diacrylate, trimethylolpropane tris acrylic acid
At least one of ester, 1,4 butanediol diacrylate, diallyphthalate acid esters.
Further preferably, the diluent is selected from tri (propylene glycol) diacrylate, trimethylolpropane tris acrylic acid
At least one of ester, neopentylglycol diacrylate.
Preferably, the stabilizer be selected from 1,4-benzoquinone, hydroquinone, p-tert-Butylcatechol, p-hydroxyanisole,
At least one of 2- tert-butyl hydroquinone.
Using above-mentioned preferred raw material, in parts by mass, the raw material composition of the low viscosity unsaturated polyester resin includes：
Further preferably, by weight percentage, raw material composition includes：
Further preferably, the molal weight of the cyclic polyols is the 12~20% of chain polyalcohol molal weight；Through into one
It walks application test to find, the VPI impregnating resins that the unsaturated polyester (UP) prepared using above-mentioned optimization formula is prepared as base material, flowing
More preferably, solid volatile content is lower for property, adhesion strength, impact strength and storage stability.
The preparation of the low viscosity unsaturated polyester resin is using conventional production technology, specially：
All monomers are gradually warming up to 170~200 DEG C after mixing to react, until acid value is 20~25mgKOH/
Vacuumize process after g, pressure are -0.095MPa, and the pumpdown time is 20~30min, removes small-molecule substance；It is cooled to 160
~180 DEG C, stabilizer is then added and is uniformly mixed, naturally cools to 90~120 DEG C, is eventually adding stabilizer and crosslinking agent, mix
It closes uniform, you can obtain above-mentioned low viscosity unsaturated polyester resin.
The invention also discloses a kind of wind-driven generator VPI impregnating resins, using above-mentioned low viscosity unsaturated polyester (UP)
Resin.
Preferably, by weight percentage, the raw material composition of the wind-driven generator VPI impregnating resins includes：
Compared with prior art, the invention has the advantages that：
(1) viscosity is low under unsaturated polyester resin room temperature prepared by the present invention, good penetrability, pressure leaching can be greatly shortened
The stain time improves production efficiency；Storage stability is excellent, and viscosity build is slow, and Storage period is long with validity period.
(2) low viscosity unsaturated polyester resin prepared by the present invention is free of styrene, vinyltoluene isoreactivity diluent,
Clean environment firendly, fugitive constituent≤1% are better than common unsaturated-resin infusion product.
(3) the low viscosity unsaturated polyester resin hot setting that prepared by the present invention is fast, and mass loss is few in solidification process, Gu
Change product high mechanical strength.
Specific implementation mode
Following embodiment is the further instruction to the present invention, but is not limit the scope of the invention.
Embodiment 1
A kind of low viscosity unsaturated polyester resin of the present invention, raw material include：250g (1.69mol) phthalic acid
Acid anhydride, 150g (1.41mol) diglycol, 250g (3.29mol) propylene glycol, 180g (0.59mol) the spiroglycol, 350g
(3.02mol) fumaric acid, 0.5g hydroquinones and 350g trimethylolpropane trimethacrylates.
The preparation method of the low viscosity unsaturated polyester resin of the present embodiment, is as follows：
By 250g phthalic anhydrides, 150g diglycols, 250g propylene glycol, 180g the spiroglycols, the anti-fourths of 350g
Enedioic acid is gradually warming up to 170~200 DEG C and is reacted after mixing, until acid value is 20~25mgKOH/g；After reaction
﹣ 0.095MPa are evacuated to, the vacuumize process time is 20min.170 DEG C are subsequently cooled to, 0.5g stabilizers are added to benzene two
Phenol be uniformly mixed, naturally cool to 90 DEG C, be eventually adding 350g trimethylolpropane trimethacrylates, be uniformly mixed to get to
Low viscosity unsaturated polyester resin suitable for VPI impregnation technologies.
By 60g low viscosity unsaturated polyester (UP)s manufactured in the present embodiment and 42g epoxy novolacs, 4g tung oil acid anhydrides, 1.5g peroxides
Change diisopropylbenzene (DIPB), 1.5g cobalt naphthenates, the mixing of 35g trimethylolpropane trimethacrylates, wind-driven generator VPI is prepared
Impregnating resin.
The resin when in use, cures 4~5h at 140~150 DEG C first, and then curing 7~8h at 170~180 DEG C is
Curable film-forming.
Comparative example 1
In this comparative example, cyclic polyols addition is adjusted, is the 50% of chain polyalcohol molal weight, raw material packet
It includes：250g (1.69mol) phthalic anhydride, 120g (1.13mol) diglycol, 180g (2.37mol) propylene glycol,
538g (1.77mol) the spiroglycol, 350g (3.02mol) fumaric acid, 0.5g hydroquinones and 350g trimethylolpropanes
Triacrylate.
The preparation method of the low viscosity unsaturated polyester resin of this comparative example, is as follows：
By 250g phthalic anhydrides, 120g diglycols, 180g propylene glycol, 538g the spiroglycols, the anti-fourths of 350g
Enedioic acid is gradually warming up to 170~200 DEG C and is reacted after mixing, until acid value is 20~25mgKOH/g；After reaction
﹣ 0.095MPa are evacuated to, the vacuumize process time is 20min.170 DEG C are subsequently cooled to, 0.5g stabilizers are added to benzene two
Phenol be uniformly mixed, naturally cool to 90 DEG C, be eventually adding 350g trimethylolpropane trimethacrylates, be uniformly mixed to get to
Low viscosity unsaturated polyester resin suitable for VPI impregnation technologies.
By the low viscosity unsaturated polyester (UP) and 42g epoxy novolacs, 4g tung oil acid anhydrides, 1.5g peroxides of 60g this comparative example preparations
Change diisopropylbenzene (DIPB), 1.5g cobalt naphthenates, the mixing of 35g trimethylolpropane trimethacrylates, wind-driven generator VPI is prepared
Impregnating resin.
The resin when in use, cures 4~6h at 140~150 DEG C first, and then curing 7~8h at 170~180 DEG C is
Curable film-forming.
Comparative example 2
In this comparative example, the spiroglycol, raw material is replaced to include with phenyl ring cyclic polyols phenylpropyl alcohol glycol：250g
(1.69mol) phthalic anhydride, 150g (1.41mol) diglycol, 250g (3.29mol) propylene glycol, 90g
(0.59mol) phenylpropyl alcohol glycol, 350g (3.02mol) fumaric acid, 0.5g hydroquinones and 350g trimethylolpropane tris third
Olefin(e) acid ester.
The preparation method of the low viscosity unsaturated polyester resin of this comparative example, is as follows：
By 250g phthalic anhydrides, 150g diglycols, 250g propylene glycol, 90g phenylpropyl alcohols glycol, the anti-butylene of 350g
Diacid is gradually warming up to 170~200 DEG C and is reacted after mixing, until acid value is 20~25mgKOH/g；It takes out after reaction
For vacuum to ﹣ 0.095MPa, the vacuumize process time is 20min.170 DEG C are subsequently cooled to, 0.5g stabilizer hydroquinones are added
It is uniformly mixed, naturally cools to 90 DEG C, be eventually adding 350g trimethylolpropane trimethacrylates, be uniformly mixed to get to suitable
Low viscosity unsaturated polyester resin for VPI impregnation technologies.
By the low viscosity unsaturated polyester (UP) and 42g epoxy novolacs, 4g tung oil acid anhydrides, 1.5g peroxides of 60g this comparative example preparations
Change diisopropylbenzene (DIPB), 1.5g cobalt naphthenates, the mixing of 35g trimethylolpropane trimethacrylates, wind-driven generator VPI is prepared
Impregnating resin.
The resin when in use, cures 4~6h at 140~150 DEG C first, and then curing 7~8h at 170~180 DEG C is
Curable film-forming.
Embodiment 2
A kind of low viscosity unsaturated polyester resin of the present invention, raw material include：250g (1.69mol) phthalic acid
Acid anhydride, 120g (1.15mol) neopentyl glycol, 200g (2.63mol) propylene glycol, 12 carbon dimethanol of 150g (0.76mol) tricyclic,
250g (2.40mol) maleic anhydride, 0.5g 1,4-benzoquinone and 350g neopentylglycol diacrylates.
The preparation method of the low viscosity unsaturated polyester resin of the present embodiment, is as follows：
By 250g phthalic anhydrides, 120g neopentyl glycols, 200g propylene glycol, 12 carbon dimethanol of 150g tricyclics, 250g
Maleic anhydride is gradually warming up to 170~200 DEG C and is reacted after mixing, until acid value is 20~25mgKOH/g；Reaction
After be evacuated to ﹣ 0.095MPa, the vacuumize process time is 20min.170 DEG C are subsequently cooled to, 0.5g stabilizers are added
1,4-benzoquinone be uniformly mixed, naturally cool to 90 DEG C, be eventually adding 350g neopentylglycol diacrylates, be uniformly mixed to get to
Low viscosity unsaturated polyester resin suitable for VPI impregnation technologies.
By 60g low viscosity unsaturated polyester (UP)s manufactured in the present embodiment and 42g epoxy novolacs, 4g tung oil acid anhydrides, 1.5g peroxides
Change diisopropylbenzene (DIPB), 1.5g cobalt naphthenates, the mixing of 35g neopentylglycol diacrylates, wind-driven generator VPI dippings are prepared
Resin.
The resin when in use, cures 4~5h at 140~150 DEG C first, and then curing 7~8h at 170~180 DEG C is
Curable film-forming.
Embodiment 3
A kind of low viscosity unsaturated polyester resin of the present invention, raw material include：250g (1.69mol) phthalic acid
Acid anhydride, 150g (1.41mol) diglycol, 150g (2.42mol) ethylene glycol, 90g (0.77mol) cyclohexanediol, 250g
(2.55mol) maleic anhydride, 0.5g hydroquinones and 350g tri (propylene glycol) diacrylates.
The preparation method of the low viscosity unsaturated polyester resin of the present embodiment, is as follows：
By 250g phthalic anhydrides, 150g diglycols, 150g ethylene glycol, 90g cyclohexanediols, 250g maleics
Dicarboxylic anhydride is gradually warming up to 170~200 DEG C and is reacted after mixing, until acid value is 20~25mgKOH/g；After reaction
﹣ 0.095MPa are evacuated to, the vacuumize process time is 20min.170 DEG C are subsequently cooled to, 0.5g stabilizers are added to benzene two
Phenol be uniformly mixed, naturally cool to 90 DEG C, be eventually adding 350g tri (propylene glycol) diacrylates, be uniformly mixed to get to
Low viscosity unsaturated polyester resin suitable for VPI impregnation technologies.
By 60g low viscosity unsaturated polyester (UP)s manufactured in the present embodiment and 42g epoxy novolacs, 4g tung oil acid anhydrides, 1.5g peroxides
Change diisopropylbenzene (DIPB), 1.5g cobalt naphthenates, 35g tri (propylene glycol) diacrylates, wind-driven generator VPI dippings are prepared
Resin.
The resin when in use, cures 4~5h at 140~150 DEG C first, and then curing 7~8h at 170~180 DEG C is
Curable film-forming.
Advantageous effect for the low viscosity unsaturated polyester resin further illustrated the present invention, by Examples 1 to 3 and comparison
The wind-driven generator VPI impregnating resins that example 1~2 is prepared respectively have carried out performance survey according to the corresponding national standard of insulated paint
Examination, the results are shown in Table 1.
Table 1
As shown in Table 1, wind-driven generator VPI impregnating resin fugitive constituent≤1% that prepared by the present invention, clean environment firendly, tool
There is the features such as hot adhesion strength is high, heat-resist, impact strength is high.With the use of extraordinary low resin mica tape or moderate-resin mica tape
After solidification, insulation system is uniform, and inside is without air cleft, and overall structure is closely knit, good electric property, and dielectric loss is low.
Claims (10)
1. a kind of VPI impregnation technologies low viscosity unsaturated polyester resin, which is characterized in that in parts by mass, low viscosity insatiable hunger
Raw material with polyester resin includes：
The carbon atom number of the chain polyalcohol is 2~5；
The cyclic polyols in 12 carbon dimethanol of tricyclic, the spiroglycol, cyclohexanediol, cyclohexanedimethanol at least
It is a kind of；
The molal weight of the cyclic polyols is the 10~25% of chain polyalcohol molal weight.
2. VPI impregnation technologies low viscosity unsaturated polyester resin according to claim 1, which is characterized in that described more
First acid is selected from M-phthalic acid, succinic acid, glutaric acid, adipic acid, maleic acid, maleic anhydride, fumaric acid, neighbour
It is one or more in phthalate anhydride, methyl tetrahydro phthalic anhydride, methylnadic anhydride；
The chain polyalcohol is in neopentyl glycol, diglycol, propylene glycol, methyl propanediol, ethylene glycol, butanediol
At least one.
3. VPI impregnation technologies low viscosity unsaturated polyester resin according to claim 1, which is characterized in that described dilute
It releases agent and is selected from lauryl methacrylate, neopentylglycol diacrylate, tri (propylene glycol) diacrylate, 1,6-HD
In diacrylate, trimethylolpropane trimethacrylate, 1,4 butanediol diacrylate, diallyphthalate acid esters
At least one.
4. VPI impregnation technologies low viscosity unsaturated polyester resin according to claim 1, which is characterized in that described steady
Determine agent in 1,4-benzoquinone, hydroquinone, p-tert-Butylcatechol, p-hydroxyanisole, 2- tert-butyl hydroquinone extremely
Few one kind.
5. the VPI impregnation technology low viscosity unsaturated polyester resins according to Claims 1 to 4 any claim,
It is characterized in that, the cyclic polyols are selected from least one of the spiroglycol, 12 carbon dimethanol of tricyclic, cyclohexanediol.
6. VPI impregnation technologies low viscosity unsaturated polyester resin according to claim 5, which is characterized in that press quality
Part meter, the raw material of low viscosity unsaturated polyester resin, which forms, includes：
7. VPI impregnation technologies low viscosity unsaturated polyester resin according to claim 6, which is characterized in that the ring
The molal weight of shape polyalcohol is the 12~20% of chain polyalcohol molal weight.
8. a kind of VPI impregnating resins used for wind power generation, which is characterized in that using according to claim 1~7 any claim institute
The low viscosity unsaturated polyester resin stated.
9. wind-driven generator VPI impregnating resins according to claim 8, which is characterized in that by weight percentage, former
Material forms：
10. wind-driven generator VPI impregnating resins according to claim 9, it is characterised in that：
The epoxy resin is selected from least one of bisphenol type epoxy, epoxy novolac, hydantoin epoxy；
The crosslinking agent be selected from lauryl methacrylate, neopentylglycol diacrylate, tri (propylene glycol) diacrylate,
1,6 hexanediol diacrylate, trimethylolpropane trimethacrylate, 1,4 butanediol diacrylate, phthalic acid two
At least one of acrylate；
The curing agent is selected from tung oil acid anhydride and/or phenylimidazole；
The initiator is selected from benzoyl peroxide and/or cumyl peroxide；
The accelerating agent is selected from cobalt naphthenate and/or aluminium acetylacetonate.
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| CN110760057A (en) * | 2019-10-10 | 2020-02-07 | 南通华如绝缘材料有限公司 | Low-dielectric-loss high-pressure-resistant moisture-proof unsaturated polyester resin and preparation method thereof |
| CN111440518A (en) * | 2020-04-26 | 2020-07-24 | 山西博拉哲绝缘技术有限公司 | High-heat-resistance environment-friendly refrigerant-resistant insulating impregnating resin and preparation method thereof |
| CN111647148A (en) * | 2020-05-18 | 2020-09-11 | 浙江博菲电气股份有限公司 | Alicyclic structure ester polymer and compound, preparation method and application |
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| WO2021114553A1 (en) * | 2019-12-09 | 2021-06-17 | 广东盈骅新材料科技有限公司 | Unsaturated polyester resin, and preparation method therefor and use thereof |
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