CN106995583A - A kind of method that photocuring quickly prepares fiber-reinforced resin matrix compound material - Google Patents
A kind of method that photocuring quickly prepares fiber-reinforced resin matrix compound material Download PDFInfo
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- CN106995583A CN106995583A CN201610046003.8A CN201610046003A CN106995583A CN 106995583 A CN106995583 A CN 106995583A CN 201610046003 A CN201610046003 A CN 201610046003A CN 106995583 A CN106995583 A CN 106995583A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/36—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and impregnating by casting, e.g. vacuum casting
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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
- C08F283/10—Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass C08G on to polymers containing more than one epoxy radical per molecule
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/28—Treatment by wave energy or particle radiation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
- C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
- C08J5/043—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with glass fibres
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L63/00—Compositions of epoxy resins; Compositions of derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2351/00—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Derivatives of such polymers
- C08J2351/08—Characterised by the use of graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; 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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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2363/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2463/00—Characterised by the use of epoxy resins; Derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
- Epoxy Resins (AREA)
Abstract
The present invention relates to a kind of method that photocuring quickly prepares fiber-reinforced resin matrix compound material, belong to fiber-reinforced resin matrix compound material technical field.Each raw material composition and ingredients weight parts are as follows in the formula of the Ultraviolet curable resin composition：90-110 parts of epoxy resin, 0.1-0.7 parts of cation light initiator, 0-1 parts of sensitising agent, 0-35 parts of reactive diluent, 0-30 parts of additive.The Ultraviolet curable resin composition of the present invention is under ultraviolet light irradiation, trigger cationic polymerization, then its rapid injection has been laid in the mould of carbon fibre reinforcement, has carried out curing reaction, the demoulding can obtain fiber-reinforced resin matrix compound material product.The present invention can solve high energy consumption in RTM moulding process, time-consuming longer inferior position.Fiber-reinforced resin matrix compound material tensile strength by matrix phase of said composition is good, and solidification is not influenceed by the fleece-laying number of plies and reinforcing fiber light transmission.
Description
Technical field
The present invention relates to fiber-reinforced resin matrix compound material technical field, specifically using ultraviolet light curing reaction is simple and convenient, energy consumption is low
Feature prepares a kind of method of fiber-reinforced resin matrix compound material.
Background technology
Fibre reinforced composites have that high-strength light, designability are strong, anti-fatigue performance is good, the features such as multi-part is integrated are easily realized, in the modern times
Industrially substantial amounts of application is obtained.Expand as China's carbon fiber is production-scale, progressively meeting the need in the high-precision pointed collar domain such as domestic air mail space flight
After wanting, carbon fiber just turns into carbon fiber and its composite complete industrial chain urgent problem to be solved in the application and development of industrial circle.At present, restrict
The primary factor of carbon fiber application scale is its expensive price, next to that the time cost during machine-shaping.
The production process of carbon fibre reinforced composite is also the production process of product, and production technology level directly affects the performance of final products.With
Exemplified by RTM moulding process, the carbon fibre reinforcement close with article shape is put into mould first, then injection thermosetting resin with pressure, together
When mould is kept at 80~180 DEG C to a period of time, carry out sufficient curing reaction, be finally stripped deburring, finally give product.As can be seen that
High energy consumption, it is time-consuming it is longer be inferior position in carbon fibre reinforced composite manufacturing process all the time, this not only adds the manufacturing cost of material, also with working as
Modern environmental protection, the theory of sustainable development mutually deviate from, and seriously constrain its further expansion application.
Compared with heat cure is reacted, ultraviolet light curing reaction is simple, convenient and efficient, and its energy consumption is only 1st/1 to five/10ths of heat cure reaction,
Operation maintenance cost is low, and it has been widely used in each production field.At present, application of the photocuring technology in composite RTM,
Thermal initiator is mainly substituted for light trigger, composite is prepared using ultraviolet light solidification, while mould traditional in RTM is substituted for
Printing opacity mould, is realized ultraviolet light-initiated in forming process.But compared with traditional heat curing process, the technology restriction mold material and shaping
The thickness of product, improves die cost, meanwhile, in order to meet uniform curing requirement, the type and shape of composite final products are equal
It is restricted, this makes the application of photocuring technology in the composite not promoted widely.Therefore, how using photocuring energy-conservation
Characteristic, can overcome the limitation of the printing opacity depth of photocuring itself again, be current people problem of concern.
In carbon fibre reinforced composite, due to the addition of the materials such as carbon fiber, the transmission of light is conditional in system, can not be penetrated for light
Or the part being irradiated to, photocuring reaction is difficult to carry out.But for composite, it is necessary to assure there is certain thickness just to possess suitable mechanicalness
Energy.Cation light initiator is after illumination, and the initiation biologically active fragment of generation has Bronsted acid and free radical, and wherein Bronsted acid plays main initiation.It is many
Well known, in cationic photopolymerization, salt ion and macromolecule carbon cation with same sex electric charge are repelled due to the same sex, it is impossible to interreaction,
Therefore can not occur biradical termination, if not adding extra chain terminating agent into system now, chain termination reaction is difficult to occur.In cation activity
The life-span of the heart is very long, if cut off light source after cationic photopolymerization generation, the chain propagation reaction in system can still proceed, and pass through
Room temperature (or low temperature) solidify afterwards reaction of a period of time can reach more complete polymerization conversion.
The characteristics of present invention can be with solidify afterwards using cation photocuring reaction system, using RTM quick shaping process, prepare fibre reinforced and answer
Condensation material, this lays a good foundation to reduce the energy consumption in whole composite material manufacturing process, has reached Green Development, low-carbon and the mesh of sustainable development
's.
The content of the invention
The technical assignment of the present invention be in view of the shortcomings of the prior art there is provided it is a kind of using ultraviolet light curing reaction is simple and convenient, energy consumption is low the characteristics of come
Prepare a kind of method of fiber-reinforced resin matrix compound material.
The technical solution adopted for the present invention to solve the technical problems is：
(1), a kind of method that photocuring quickly prepares fiber-reinforced resin matrix compound material, its feature is as follows：It is mixed with uv light irradiation light-initiated
The Ultraviolet curable resin composition of the raw materials such as agent, has then laid its rapid injection in the mould of carbon fibre reinforcement, progress solidifies anti-
Should, the demoulding can obtain product.
(2) present invention provides a kind of Ultraviolet curable resin composition, and raw material composition and each component parts by weight are as follows during it is formulated：Epoxy resin
90-110 parts, 0.1-0.7 parts of cation light initiator, 0-1 parts of sensitising agent, 0-35 parts of reactive diluent, 5-40 parts of (methyl) acrylate adds
Plus 0-30 parts of agent.
(3) epoxy resin is glycidyl ether type epoxy resin, glycidyl ester epoxy resin, glycidyl amine epoxy resin, fat
One or more in ring race epoxy resin, such as E44 epoxy resin, E51 epoxy resin, 3,4- epoxycyclohexyl-methyl -3,4- epoxycyclohexyl first
One or more in acid esters, double ((3,4- epoxycyclohexyls) methyl) adipate esters, epoxy modified silicone resin.
(4) cation light initiator is the one or more in salt compounded of iodine, sulfosalt, such as 4,4- dimethyl diphenyl iodine hexafluorophosphate,
One or more in diphenyl iodine hexafluorophosphate, triphenyl sulfosalt, diphenyl-(4- phenyl sulphur) phenyl sulphur hexafluorophosphate.
(5) sensitising agent is α, alpha, alpha-dimethyl epoxide-α-phenyl acetophenone, benzophenone, benzoin methyl ether, benzoin isobutyl propyl group ether, styrax fourth
One or more in ether, benzil, Michler's keton, thioxanthone.Sensitising agent is added, the efficiency of initiation of cation light initiator can be improved.
(6) reactive diluent is expoxy propane benzylic ether, expoxy propane phenyl ether, acrylic glycidol ether, bisglycidyl ether, second
One or more in glycol bisglycidyl ether.Reactive diluent is added, the viscosity of epoxy resin can be adjusted, improves the operable of process system
Property.
(7) additive is the one or more in powder or the filler of particle form, pigment, Nano filling, such as aluminum oxide, glass, pottery
The pigment such as the powder such as porcelain, quartz, aerosil or the filler or carbon black or titanium white of particle form, can also add Nano filling, such as nanometer
Silica, nano-nylon fiber etc..Filler is added, the intensity of formed solidfied material can be both improved, the volume contraction of solidification is reduced, and can be adjusted
The viscosity of epoxy resin is saved, improves operative weldability.
The present invention is provided a kind of prepares the side of fiber-reinforced resin matrix compound material using the characteristics of ultraviolet light curing reaction is simple and convenient, energy consumption is low
Method, described fibre reinforced composites are prepared after above-mentioned Ultraviolet curable resin composition matrix phase composite fibre enhancing phase, the fiber
Enhancing is mutually carbon cloth or glass fabric, wherein the purple containing 40-75 parts by weight in every 100 percent by weight fiber reinforced resin based composites
Outer light curing resin composition.
Compared with prior art, Ultraviolet curable resin composition of the invention and its beneficial effect of fiber-reinforced resin matrix compound material are：
(1) resin system of the invention produces cation activity center after ultraviolet lighting, and activated centre can be uniform by the effect of dispersing apparatus
Ground is dispersed in whole curing system, and this can make whole light tight system uniform curing.Also, the reaction is simple and convenient, cost and energy consumption are low.
(2) fiber-reinforced resin matrix compound material tensile strength of the present invention by matrix phase of said composition is good, solidification not by the fleece-laying number of plies and
Polymer matrix composites strengthen the influence of phase light transmission.The polymer matrix composites for laying 6 layers of fibre reinforced phase can be complete in 3~40 minutes
Into the solidification of disposable rapid deep zone.
Specific embodiment
The method for quickly preparing fiber-reinforced resin matrix compound material to a kind of photocuring of the present invention with reference to embodiment is said in detail below
It is bright.
Embodiment 1
Fiber glass reinforcement is spread in the die cavity of mold closing, according to quality proportioning mixed raw material, E44 epoxy resin mass fraction 90
Part, 4,4- 0.5 part of dimethyl diphenyl iodine hexafluorophosphates.Compound is noted after UV Light by injector under vacuum aided
Enter and rationally laid in the closure mould of fibre reinforcement, liquid resin is injected into die cavity with pressure, periphery is sealed with vacuum and matched moulds, soaked
Moisten fiber glass reinforcement, product is formed after the then cured, demoulding.
Embodiment 2
Formula is in the present embodiment：100 parts of E51 epoxy resin, 0.1 part of triphenyl sulfosalt, remaining preparation technology is same as Example 1.
Embodiment 3
Formula is in the present embodiment：110 parts of 3,4- epoxycyclohexyl-methyl -3,4- epoxycyclohexyls formic acid esters, 0.4 part of diphenyl iodine hexafluorophosphate,
Diphenyl-(4- phenyl sulphur) 0.3 part of phenyl sulphur hexafluorophosphate, remaining preparation technology is same as Example 1.
Embodiment 4
Formula is in the present embodiment：Double ((3,4- epoxycyclohexyls) methyl) 50 parts of adipate esters, 55 parts of E51 epoxy resin, diphenyl-(4- phenyl sulphur)
0.1 part of phenyl sulphur hexafluorophosphate, 35 parts of expoxy propane benzylic ether, remaining preparation technology is same as Example 1.
Embodiment 5
E51 epoxy resin 55g, epoxy modified silicone resin epoxy resin ES-0640g, triphenyl sulfosalt 0.5g are weighed, is added them into
Mixed in reaction vessel, stir, obtain Ultraviolet curable resin composition.The UV-cured resin solidfied material of the present embodiment and fiber reinforcement tree
The preparation method be the same as Example 2 of resin-based composite.
Embodiment 6
Any 6 layers of number of plies of fiber-reinforced resin matrix compound material laying, is stretched using tester on material universal testing machine to it in embodiment 1 to 5
Performance is tested, and its tensile strength reaches 500MPa to more than 600MPa.
Claims (7)
1. a kind of method that photocuring quickly prepares fiber-reinforced resin matrix compound material, its feature is as follows：Light trigger is mixed with uv light irradiation
Deng the Ultraviolet curable resin composition of raw material, then its rapid injection has been laid in the mould of carbon fibre reinforcement, curing reaction is carried out,
The demoulding can obtain product.
2. Ultraviolet curable resin composition according to claim 1, it is characterised in that raw material composition and each component parts by weight are such as during it is formulated
Under：90-110 parts of epoxy resin, 0.1-0.7 parts of cation light initiator, 0-1 parts of sensitising agent, 0-35 parts of reactive diluent, 0-30 parts of additive.
3. Ultraviolet curable resin composition according to claim 2, it is characterised in that the epoxy resin is glycidyl ether type epoxy tree
One kind in fat, glycidyl ester epoxy resin, glycidyl amine epoxy resin, cycloaliphatic epoxy resin, epoxy modified silicone resin or
It is a variety of.
4. Ultraviolet curable resin composition according to claim 2, it is characterised in that the cation light initiator is salt compounded of iodine, sulphur
One or more in salt.
5. Ultraviolet curable resin composition according to claim 2, it is characterised in that the sensitising agent is α, alpha, alpha-dimethyl epoxide-α-phenyl benzene
One or more in ethyl ketone, benzophenone, benzoin methyl ether, benzoin isobutyl propyl group ether, benzoin isobutyl ether, benzil, Michler's keton, thioxanthone.
6. Ultraviolet curable resin composition according to claim 2, it is characterised in that the reactive diluent be expoxy propane benzylic ether,
One or more in expoxy propane phenyl ether, acrylic glycidol ether, bisglycidyl ether, ethylene glycol bisglycidyl ether.
7. Ultraviolet curable resin composition according to claim 2, it is characterised in that the additive be powder or particle form filler,
One or more in pigment, Nano filling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610046003.8A CN106995583A (en) | 2016-01-22 | 2016-01-22 | A kind of method that photocuring quickly prepares fiber-reinforced resin matrix compound material |
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| CN201610046003.8A CN106995583A (en) | 2016-01-22 | 2016-01-22 | A kind of method that photocuring quickly prepares fiber-reinforced resin matrix compound material |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107383788A (en) * | 2017-08-29 | 2017-11-24 | 张艳雪 | A kind of method that photocuring quickly prepares fiber-reinforced resin matrix compound material |
| CN108485183A (en) * | 2018-02-11 | 2018-09-04 | 东莞爱的合成材料科技有限公司 | One kind can be used for transparent photosensitive resin of clinical medical high tenacity and preparation method thereof |
| CN108546393A (en) * | 2018-07-19 | 2018-09-18 | 东莞蚂蚁三维科技有限公司 | A kind of resistance to ultralow temperature 3D printing photosensitive nanocomposite and its preparation |
| CN109438918A (en) * | 2018-08-31 | 2019-03-08 | 深圳市郎搏万先进材料有限公司 | A kind of fibre reinforced composites and preparation method thereof |
| CN110861322A (en) * | 2019-11-20 | 2020-03-06 | 江苏海川新材料科技有限公司 | Production process of color light cured glass fiber rib |
| CN112297471A (en) * | 2019-07-26 | 2021-02-02 | 深圳海川新材料科技股份有限公司 | FRP (fiber reinforced plastic) bar production line based on PLC (programmable logic controller) control system and process thereof |
| CN113121959A (en) * | 2021-04-14 | 2021-07-16 | 华南理工大学 | Light-heat dual-curing modified nanocellulose-reinforced epoxy resin composite material and preparation method thereof |
| CN114605783A (en) * | 2022-04-13 | 2022-06-10 | 湖北九联汇博科技有限公司 | Resin base material, photocuring fiber reinforced plastic rod and preparation method thereof |
| CN114716703A (en) * | 2021-01-04 | 2022-07-08 | 通用汽车环球科技运作有限责任公司 | Multi-mixture fiber-reinforced composite material and preparation method thereof |
| WO2023216759A1 (en) * | 2022-05-10 | 2023-11-16 | 振石集团华智研究院(浙江)有限公司 | Frame structure of photovoltaic assembly and production process for frame structure |
-
2016
- 2016-01-22 CN CN201610046003.8A patent/CN106995583A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107383788A (en) * | 2017-08-29 | 2017-11-24 | 张艳雪 | A kind of method that photocuring quickly prepares fiber-reinforced resin matrix compound material |
| CN108485183A (en) * | 2018-02-11 | 2018-09-04 | 东莞爱的合成材料科技有限公司 | One kind can be used for transparent photosensitive resin of clinical medical high tenacity and preparation method thereof |
| CN108485183B (en) * | 2018-02-11 | 2020-11-24 | 东莞爱的合成材料科技有限公司 | High-toughness transparent photosensitive resin for clinical medicine and preparation method thereof |
| CN108546393A (en) * | 2018-07-19 | 2018-09-18 | 东莞蚂蚁三维科技有限公司 | A kind of resistance to ultralow temperature 3D printing photosensitive nanocomposite and its preparation |
| CN109438918A (en) * | 2018-08-31 | 2019-03-08 | 深圳市郎搏万先进材料有限公司 | A kind of fibre reinforced composites and preparation method thereof |
| CN112297471A (en) * | 2019-07-26 | 2021-02-02 | 深圳海川新材料科技股份有限公司 | FRP (fiber reinforced plastic) bar production line based on PLC (programmable logic controller) control system and process thereof |
| CN110861322A (en) * | 2019-11-20 | 2020-03-06 | 江苏海川新材料科技有限公司 | Production process of color light cured glass fiber rib |
| CN114716703A (en) * | 2021-01-04 | 2022-07-08 | 通用汽车环球科技运作有限责任公司 | Multi-mixture fiber-reinforced composite material and preparation method thereof |
| CN113121959A (en) * | 2021-04-14 | 2021-07-16 | 华南理工大学 | Light-heat dual-curing modified nanocellulose-reinforced epoxy resin composite material and preparation method thereof |
| CN113121959B (en) * | 2021-04-14 | 2022-05-24 | 华南理工大学 | Light-heat dual-curing modified nanocellulose reinforced epoxy resin composite material and preparation method thereof |
| CN114605783A (en) * | 2022-04-13 | 2022-06-10 | 湖北九联汇博科技有限公司 | Resin base material, photocuring fiber reinforced plastic rod and preparation method thereof |
| WO2023216759A1 (en) * | 2022-05-10 | 2023-11-16 | 振石集团华智研究院(浙江)有限公司 | Frame structure of photovoltaic assembly and production process for frame structure |
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Application publication date: 20170801 |