CN101525439A - Modified epoxide resin for structural adhesive of wind generating blades and preparation method thereof - Google Patents
Modified epoxide resin for structural adhesive of wind generating blades and preparation method thereof Download PDFInfo
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- CN101525439A CN101525439A CN200810205176A CN200810205176A CN101525439A CN 101525439 A CN101525439 A CN 101525439A CN 200810205176 A CN200810205176 A CN 200810205176A CN 200810205176 A CN200810205176 A CN 200810205176A CN 101525439 A CN101525439 A CN 101525439A
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Abstract
The invention relates to modified epoxide resin for structural adhesive of wind generating blades, which comprises the raw materials: 10-50 weight percent of E-44 epoxide resin, 10-50 weight percent of E-51 epoxide resin, 5-15 weight percent of E-20 epoxide resin, 10-50 weight percent of 830 epoxide resin, 0.1-1 weight percent of octoates, 10-30 weight percent of polyurethane performed polymer, 0.1-1 weight percent of tin catalyst, 5-20 weight percent of amine-terminated silicone 1000, 1-10 weight percent of styryl pyridine and 1-5 weight percent of tetrafunctional epoxide resin. Compared with the epoxide resin without being modified, the condensate of the modified epoxide resin has the advantages that the performance is remarkably enhanced, the rupture strength is increased by 40-60 percent, the cutting strength is increased by 40-80 percent and the impact ductility is enhanced by 150-200 percent; and the condensate of the modified epoxide also has excellent cutting fatigue capability and bending fatigue: after being circulated for 10<7> times (100, 000 times/h) under the cutting load of 50 percent, the conservation rate of the cutting fatigue strength of the condensate is larger than 90 percent; and after being circulated for 10<7> times (120 times/m) under the condition that the bending scope is + 10 percent or -10 percent, the conservation rate of the bending fatigue strength of the body of the condensate is larger than 90 percent. The invention is particularly suitable for mold adhesion of female molds and male molds of wind generating blades of more than 1.5 megawatts.
Description
Technical field
The present invention relates to a kind of modified epoxy that is used for structural adhesive of wind generating blades and preparation method thereof.
Background technology
Wind-power electricity generation be a kind of natural, the cleaning renewable energy source.At present, the wind generating technology cost is more and more lower, has begun to substitute the coal electricity in Europe comprehensively, in states such as Spain, Denmark, even the market share of having approached water power.Along with 37.5 meters appearance with blade of 1.5 megawatts, wind power technology enters the large-scale commercial applications stage rapidly, becomes one of fastest-rising field in the renewable energy source.One of part that wind power generation plant is most crucial is a rotating vane, belong to glass fibre or carbon-fibre reinforced epoxy resin composite material, primary structure is that bonding gordian technique is the structure glue that used modified epoxy is prepared by each half bonding forming of blade of yin, yang.China belongs to the up-and-coming youngster, and wind energy market is huge, develops very fast; But so far, the structure glue of the Resins, epoxy preparation of China's modification on traditional basis does not all reach 37.5 meters actual requirements with blade, mainly there are problems such as breaking tenacity and elongation are low, poor toughness, fatigue performance difference, consequently easily form cracking in the blade movement process, shorten work-ing life greatly.
Summary of the invention
Technical problem to be solved by this invention provides a kind of modified epoxy that is used for structural adhesive of wind generating blades and preparation method thereof, to overcome the shortcoming of traditional structure glue, for China wind power generation blade enterprise provides a kind of have high strength, high tenacity, fatigue proof epoxy resin structural adhesive.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A kind of modified epoxy that is used for structural adhesive of wind generating blades, its raw material comprises following component:
Epoxy resin E-44 10wt%～50wt%
Resins, epoxy E-51 10wt%～50wt%
Resins, epoxy E-20 5wt%～15wt%
Resins, epoxy 830 10wt%～50wt%
2-ethylhexoate 0.1wt%～1wt%
PU performed polymer 10wt%～30wt%
Tin class catalyzer 0.1wt%～1wt%
End amido silicone resin 1000 5wt%～20wt%
SP resin 1wt%～10wt%
Four sense Resins, epoxy 1wt%～5wt%
Described Resins, epoxy E-51, E-44, E-20 are bisphenol A type epoxy resin.
Described Resins, epoxy 830 is bisphenol f type epoxy resin.
Described 2-ethylhexoate is one or more in isocaprylic acid zinc, isocaprylic acid vanadium, the isocaprylic acid lead.
Described PU performed polymer is the two functionality performed polymers of molecular weight 2000-3000.
Described tin class catalyzer is one or both in stannous octoate, the dibutyl tin dilaurate.
Described end amido silicone resin 1000 is the silicone resin of 500-1500 for containing end amido and molecular weight.
Described SP resin is the lacquer resins of hydroxyl, and its molecular weight is 800-1400.
Described four sense Resins, epoxy are AG80.
The preparation method of described modified epoxy may further comprise the steps:
1) preparation of PU: MDI-50 is dropped into reactor, and temperature control adds polyethers 2000 at 40 ℃～70 ℃, finishes, and temperature control reacted 2～3 hours at 50 ℃～120 ℃, made the PU performed polymer of NCO-R-NCO, and inflated with nitrogen is protected with standby;
2) preparation of SP: in reactor, add phenol, formaldehyde, zinc oxide, temperature control is at 90 ℃～120 ℃, reacted 7～8 hours, then temperature control vacuumizes dehydration 2～6 hours at 60 ℃～90 ℃ under the 60-80mmHg vacuum pressure, adds the A3 molecular sieve then, 60 ℃～90 ℃ of temperature controls, stirred 2 hours, and be cooled to room temperature, standby;
3) preparation of the Resins, epoxy of modification: the mixture that in reactor, adds bisphenol A type epoxy resin E-51, E-44, E-20 and bisphenol f type epoxy resin 830, temperature control is at 50 ℃～120 ℃, add 2-ethylhexoate, stir after 30～60 minutes, progressively add above-mentioned PU performed polymer, temperature control reacted 2～4 hours at 50 ℃～120 ℃; Again temperature control adds tin class catalyzer at 80 ℃～150 ℃, after 30～60 minutes, adds the SP resin and continues reaction 2～3 hours; Then add and contain end amido silicone resin 1000, reacted 2-3 hour, until-the NCO radical reaction is complete; Temperature control adds four sense Resins, epoxy AG80 and stirred 2 hours at 50 ℃～70 ℃ then, and the cooling cooling obtains modified epoxy of the present invention.
Described modified epoxy adopts solidifying agent polyetheramine 230 to make solidifying agent, obtains the very excellent structural system of performance, and the matched moulds that is applied to wind power generation blade yin, yang mould is bonding.
Modified epoxy of the present invention at room temperature viscosity is 1000～50000cps, and it contains the active group that participates in epoxy curing systems.Employing contains the PU performed polymer of NCO-R-NCO and contains end-NH
2Silicone resin, contain-OH Resins, epoxy and contain the reactive modified phenolic resin of phenol-OH, make the Resins, epoxy after the modification form reticulated structure, this reticulated structure is rich in the malleable of rubber, can form island structure in epoxy resin cured product; The grafting that contains the resol of phenol-OH has guaranteed the thermostability and the rigidity of system; Contain end-NH
2Silicone resin give in the reticulated structure and bring alkoxysilyl group, form the Si-O-Si key, the anti-marquis of the system of giving, water-fast, ageing-resistant and competent premium properties.The structure of resin can not only guarantee FATIGUE STABILITY after the modification, and can guarantee performances such as the stability of the bonding strength of glass-reinforced plastic material and antistripping, against shocks.
Adopt modified epoxy structure glue of the present invention, its breaking tenacity improves 40%～60%, and shearing resistance improves 40%～80%, and impelling strength improves 150%～200%.This modified epoxy resin condensate also has remarkable shear fatigue performance and flexural fatigue performance: in 50% time circulation 10 of shear-loaded
7Inferior (per hour 100,000 times), its shear fatigue strength retention is greater than 90%; Under the situation of crooked amplitude ± 10%, circulate 10
7Inferior (per minute 120 times), its body bending fatigue strength conservation rate is greater than 90%.It is bonding that the present invention is specially adapted to the matched moulds of the above wind power generation blade yin, yang of 1.5 megawatts mould.
Embodiment
For technique means, creation characteristic that the present invention is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the present invention.
Embodiment 1
The preparation of PU:
Add 26 parts of MDI-50 temperature controls at 40 ℃～70 ℃ in reactor, add 100 parts of polyethers 2000, temperature control reacted 2～3 hours at 50 ℃～120 ℃, made the PU performed polymer of NCO-R-NCO, and the inflated with nitrogen protection is standby.
Embodiment 2
The preparation of SP:
In reactor, add 28.2Kg phenol, 18.2Kg formaldehyde, 295 gram zinc oxide, temperature control is at 90 ℃～120 ℃, reacted 7～8 hours, temperature control is depressed in the 60-80mmHg vacuum at 60 ℃～90 ℃, vacuumize dehydration 2～6 hours, add the 3.5KgA3 molecular sieve, 60 ℃～90 ℃ of temperature controls stirred 2 hours, be cooled to room temperature, standby.
Embodiment 3
Synthesizing of modified epoxy:
The E-51 that in reactor, adds bisphenol A type epoxy resin 20wt%, the E-44 of 25wt%, the E-20 of 5wt%, the mixture of the bisphenol f type epoxy resin 830 of 20wt%, temperature control is at 50 ℃～120 ℃, add catalyzer 0.5wt% isocaprylic acid zinc and 0.5wt% isocaprylic acid vanadium, stirred 30～60 minutes, the PU performed polymer that progressively adds homemade NCO-R-NCO, temperature control is at 50 ℃～120 ℃, reacted 2～4 hours, continue temperature control at 80 ℃～150 ℃, add inferior stannous octoate of catalyzer 0.1wt% and 0.1wt% dibutyl tin dilaurate, after 30～60 minutes, the SP resin of adding 2.8% continues reaction 2～3 hours, continue again to add to contain to hold amido silicone resin 1000, reacted 2-3 hour, until-the NCO radical reaction is complete, temperature control is at 50 ℃～70 ℃, the AG80 that adds four sense Resins, epoxy 1.0wt% stirred 2 hours, after the cooling cooling, obtained modified epoxy of the present invention.
The above-mentioned modified epoxy that makes, the weight percentage of its raw material each component is as follows:
Epoxy resin E-44 25%
Resins, epoxy E-51 20%
Resins, epoxy E-20 5%
Resins, epoxy 830 20%
Isocaprylic acid zinc 0.5%
Isocaprylic acid vanadium 0.5%
PU performed polymer 15%
Stannous octoate 0.1%
Dibutyl tin dilaurate 0.1%
End amido silicone resin 1,000 10%
SP resin 2.8%
Four sense epoxies 1.0%
Embodiment 4
With the modified epoxy that the foregoing description 3 makes, adopt solidifying agent polyetheramine 230 to be cured, obtain the very excellent structural system of performance, below be respectively the mechanical property and the fatigue property comparing result of modification front and back.
The contrast of table one mechanical property
| To the property specific energy | Before the modification | After the modification |
| Solidifying agent | Solidifying agent 230 | Solidifying agent 230 |
| The condition of cure that adopts | 70℃/7h | 70℃/7h |
| A 3Steel shearing resistance (Mpa) | 25.4 | 38.9 |
| Glass reinforced plastic shearing resistance (Mpa) | 13.3 | 22.8 |
| Body tensile strength (Mpa) | 35.0 | 55.6 |
| Body modulus in tension (GPa) | 3.05 | 3.85 |
| Second-order transition temperature Tg (℃) | 70-85 | 70-85 |
| 23 ℃ of shock strength (KJ/M 2) | 6.5 | 19.9 |
| -40 ℃ of shock strength (KJ/M 2) | 5.3 | 15.8 |
| 50 ℃ of shock strength (KJ/M 2) | 7.6 | 20.8 |
| Elongation at break (%) | 1.5 | 3.18 |
The fatigue property contrast is:
Before the modification: in 50% time circulation 10 of shear-loaded
7Inferior (per hour 100,000 times), its shearing resistance conservation rate is 63.4%; Under the situation of crooked amplitude ± 10%, circulate 10
7Inferior (per minute 120 times), its body bending fatigue strength conservation rate is 53.6%.
After the modification: in 50% time circulation 10 of shear-loaded
7Inferior (per hour 100,000 times), its shearing resistance conservation rate is 92.6%; Under the situation of crooked amplitude ± 10%, circulate 10
7Inferior (per minute 120 times), its body bending fatigue strength conservation rate is 91.8%.
From above experiment as can be seen: modified epoxy of the present invention has higher-strength, high toughness and fatigue performance preferably.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; the present invention is not restricted to the described embodiments; that describes in the foregoing description and the specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (11)
1. modified epoxy that is used for the wind electricity blade structure glue is characterized in that its raw material comprises following component:
Epoxy resin E-44 10wt%～50wt%
Resins, epoxy E-51 10wt%～50wt%
Resins, epoxy E-20 5wt%～15wt%
Resins, epoxy 830 10wt%～50wt%
2-ethylhexoate 0.1wt%～1wt%
PU performed polymer 10wt%～30wt%
Tin class catalyzer 0.1wt%～1wt%
End amido silicone resin 1000 5wt%～20wt%
SP resin 1wt%～10wt%
Four sense Resins, epoxy 1wt%～5wt%.
2. modified epoxy according to claim 1 is characterized in that, described Resins, epoxy E-51, E-44, E-20 are bisphenol A type epoxy resin.
3. modified epoxy according to claim 1 is characterized in that, described Resins, epoxy 830 is bisphenol f type epoxy resin.
4. modified epoxy according to claim 1 is characterized in that, described 2-ethylhexoate is one or more of isocaprylic acid zinc, isocaprylic acid vanadium, isocaprylic acid lead.
5. modified epoxy according to claim 1 is characterized in that, described PU performed polymer is that molecular weight is the two functionality performed polymers of 2000-3000.
6. modified epoxy according to claim 1 is characterized in that, described tin class catalyzer is one or both of stannous octoate, dibutyl tin dilaurate.
7. modified epoxy according to claim 1 is characterized in that, described end amido silicone resin 1000 is the silicone resin of 500-1500 for containing end amido and molecular weight.
8. modified epoxy according to claim 1 is characterized in that, described SP resin is the lacquer resins of hydroxyl, and its molecular weight is 800-1400.
9. modified epoxy according to claim 1 is characterized in that, described four sense Resins, epoxy are AG80.
10. according to the preparation method of each described modified epoxy of claim 1-9, may further comprise the steps:
1) preparation of PU: MDI-50 is dropped into reactor, and temperature control adds polyethers 2000 at 40 ℃～70 ℃, finishes, and temperature control reacted 2～3 hours at 50 ℃～120 ℃, made the PU performed polymer of NCO-R-NCO, and inflated with nitrogen is protected with standby;
2) preparation of SP: in reactor, add phenol, formaldehyde, zinc oxide, temperature control is at 90 ℃～120 ℃, reacted 7～8 hours, then temperature control vacuumizes dehydration 2～6 hours at 60 ℃～90 ℃ under the 60-80mmHg vacuum pressure, adds the A3 molecular sieve then, 60 ℃～90 ℃ of temperature controls, stirred 2 hours, and be cooled to room temperature, standby;
3) preparation of the Resins, epoxy of modification: the mixture that in reactor, adds bisphenol A type epoxy resin E-51, E-44, E-20 and bisphenol f type epoxy resin 830, temperature control is at 50 ℃～120 ℃, add 2-ethylhexoate, stir after 30～60 minutes, progressively add above-mentioned PU performed polymer, temperature control reacted 2～4 hours at 50 ℃～120 ℃; Again temperature control adds tin class catalyzer at 80 ℃～150 ℃, after 30～60 minutes, adds the SP resin and continues reaction 2～3 hours; Then add and contain end amido silicone resin 1000, reacted 2-3 hour, until-the NCO radical reaction is complete; Temperature control adds four sense Resins, epoxy AG80 and stirred 2 hours at 50 ℃～70 ℃ then, and the cooling cooling obtains modified epoxy of the present invention.
11. modified epoxy according to claim 1 adopts solidifying agent polyetheramine 230 to make solidifying agent, obtains the very excellent structural system of performance, the matched moulds that is applied to wind power generation blade yin, yang mould is bonding.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102051765A CN101525439B (en) | 2008-12-31 | 2008-12-31 | Modified epoxide resin for structural adhesive of wind generating blades and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2008102051765A CN101525439B (en) | 2008-12-31 | 2008-12-31 | Modified epoxide resin for structural adhesive of wind generating blades and preparation method thereof |
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| CN101525439A true CN101525439A (en) | 2009-09-09 |
| CN101525439B CN101525439B (en) | 2012-06-27 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102173054A (en) * | 2010-12-29 | 2011-09-07 | 广东明阳风电产业集团有限公司 | Wind driven generator blade adhering method |
| CN102260425A (en) * | 2011-06-17 | 2011-11-30 | 江苏普兰纳涂料有限公司 | High-performance epoxy grout for megawatt-level wind turbine blades and preparation method thereof |
| CN101735428B (en) * | 2009-11-19 | 2011-12-07 | 东方电气集团东方汽轮机有限公司 | Preparation method of epoxy resin system used for blades of wind driven generator |
| CN103758906A (en) * | 2014-01-17 | 2014-04-30 | 广州大学 | Fiber reinforced epoxy resin/rubber laminated isolation bearing and production method thereof |
| CN109439252A (en) * | 2018-10-26 | 2019-03-08 | 广州聚合新材料科技股份有限公司 | A kind of epoxy resin sealant and its preparation method and application |
| EP3753964A1 (en) | 2019-06-19 | 2020-12-23 | Covestro Intellectual Property GmbH & Co. KG | An adhesive and its preparation and application |
| CN114149551A (en) * | 2022-02-09 | 2022-03-08 | 北京玻钢院复合材料有限公司 | Hot-melt phenolic resin, prepreg, composite material and preparation method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4317470C2 (en) * | 1993-05-26 | 2001-06-07 | Henkel Kgaa | Thermally crosslinkable heat seal adhesive and its use |
| TW282479B (en) * | 1994-06-30 | 1996-08-01 | Hoechst Ag | |
| CN1227309C (en) * | 2004-01-09 | 2005-11-16 | 南京工业大学 | Nano transparent abrasion resistant composite paint |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101735428B (en) * | 2009-11-19 | 2011-12-07 | 东方电气集团东方汽轮机有限公司 | Preparation method of epoxy resin system used for blades of wind driven generator |
| CN102173054A (en) * | 2010-12-29 | 2011-09-07 | 广东明阳风电产业集团有限公司 | Wind driven generator blade adhering method |
| CN102260425A (en) * | 2011-06-17 | 2011-11-30 | 江苏普兰纳涂料有限公司 | High-performance epoxy grout for megawatt-level wind turbine blades and preparation method thereof |
| CN103758906A (en) * | 2014-01-17 | 2014-04-30 | 广州大学 | Fiber reinforced epoxy resin/rubber laminated isolation bearing and production method thereof |
| CN109439252A (en) * | 2018-10-26 | 2019-03-08 | 广州聚合新材料科技股份有限公司 | A kind of epoxy resin sealant and its preparation method and application |
| EP3753964A1 (en) | 2019-06-19 | 2020-12-23 | Covestro Intellectual Property GmbH & Co. KG | An adhesive and its preparation and application |
| EP3753963A1 (en) | 2019-06-19 | 2020-12-23 | Covestro Deutschland AG | An adhesive and its preparation and application |
| US11667824B2 (en) | 2019-06-19 | 2023-06-06 | Covestro Intellectual Property Gmbh & Co. Kg | Adhesive and its preparation and application |
| CN114149551A (en) * | 2022-02-09 | 2022-03-08 | 北京玻钢院复合材料有限公司 | Hot-melt phenolic resin, prepreg, composite material and preparation method |
| CN114149551B (en) * | 2022-02-09 | 2022-05-13 | 北京玻钢院复合材料有限公司 | Hot-melt phenolic resin, prepreg, composite material and preparation method |
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