CN102774013B - Thermoplastic fibre reinforced epoxy based composites and uses thereof - Google Patents
Thermoplastic fibre reinforced epoxy based composites and uses thereof Download PDFInfo
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- CN102774013B CN102774013B CN201210234260.6A CN201210234260A CN102774013B CN 102774013 B CN102774013 B CN 102774013B CN 201210234260 A CN201210234260 A CN 201210234260A CN 102774013 B CN102774013 B CN 102774013B
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Abstract
The invention discloses a kind of thermoplastic fibre reinforced epoxy based composites and uses thereof, it is for raw material with epoxy resin and acrylic acid, with thermoplastic fibre aramid fiber woven cloth for reinforcing material, with N, accelerine is catalyst, take MEHQ as polymerization inhibitor, take trimethylolpropane triacrylate as diluting monomer, take isopropyl thioxanthone as light trigger, take silane coupler as modifier, take methyl alcohol as solvent, prepare as follows: first synthesizing epoxy acrylate, diluted by trimethylolpropane triacrylate, synthesis photosensitive resin, then thermoplastic fibre aramid fiber woven cloth is flooded by photosensitive resin, and on Stereolithography equipment, carry out the rapid shaping of novel electric vehicle vehicle body bracing frame.The function admirable of the photocuring novel electric vehicle vehicle body bracing frame prepared by the inventive method and environmental protection, to human body and surrounding enviroment without any Harmfulness analyse, meanwhile, its solidification effect meets national standard.
Description
Technical field
The present invention relates to a kind of thermoplastic fibre reinforced epoxy based composites and uses thereof.
Background technology
The fast development of auto industry result in automobile pollution sharply increase, bring society three large problems: energy shortage, environmental pollution, safety problem simultaneously.Reduce fuel consumption and reduce the key issue that pollution on the environment has become automobile industry development and the solution of social sustainable development urgent need.Automobile realizes lightweight, is economize energy and fall one of the most effective oligosaprobic approach, and to adopt composite to manufacture automobile structure be one of the most effective approach of automobile lightweight.Composite significantly alleviates car mass, and this just means the support only needing smaller power, thus provides platform for the development of motor technology and promoting the use of of electric automobile.But the inefficiency of conventional composite materials technique, this just needs a kind of rapid shaping technique.
The feature of photocuring technology mainly energy-conserving and environment-protective and curing rate fast.UV-curing technology a kind ofly in the resin of special formulation, adds light trigger (or sensitising agent), after absorbing the high-intensity ultraviolet light in ultraviolet (UV) uv equipment, produce living radical, thus initiated polymerization, crosslinked and graft reaction, make resin be solid-state by liquid conversion within the several seconds, reach the object of solidification.
Summary of the invention
The object of the invention is to the deficiency overcoming the existence of above-mentioned prior art, a kind of thermoplastic fibre reinforced epoxy based composites is provided and is manufacturing the purposes in automotive body structure part.The function admirable of photocuring novel electric vehicle vehicle body bracing frame prepared by the present invention and environmental protection, to human body and surrounding enviroment without any Harmfulness analyse, meanwhile, its solidification effect meets national standard.
The object of the invention is to be achieved through the following technical solutions:
The present invention relates to a kind of thermoplastic fibre reinforced epoxy based composites, described composite prepares as follows and obtains:
Step one, fortifying fibre is put into the mixed solution mixed by modifier, solvent, water, stir, take out drying after leaving standstill, obtain modification Plasitc fibers;
Step 2, the modification Plasitc fibers of step one gained is immersed in liquid photosensitive resin, makes prepreg cloth;
Step 3, by prepreg cloth laying in a mold, be placed on ultraviolet light polymerization former and carry out curing molding.
Preferably, described fortifying fibre is 100 weight portions, and modifier is 20 weight portions, and solvent is 50 weight portions, and water is 60 weight portions, and liquid photosensitive resin is 10 weight portions.
Preferably, described fortifying fibre is thermoplastic fibre aramid fiber woven cloth; Described modifier is silane coupler (KH-560); Described solvent is alcohols solvent; Described water is deionized water.
Preferably, described alcohols solvent is methyl alcohol.
Preferably, described liquid photosensitive resin prepares as follows and obtains:
A, add polymerization inhibitor in the epoxy, stir, add by the mixed liquor of acrylic acid, catalyst mix, Reactive Synthesis epoxy acrylate;
B, in the epoxy acrylate of step a gained, add diluting monomer, stir formation dilution;
C, in the dilution of step b gained, add light trigger, heating, is stirred to formation liquid colloidal, i.e. liquid photosensitive resin.
Preferably, described epoxy resin is 100 weight portions, and acrylic acid is 10 weight portions, and catalyst is 5 weight portions, and polymerization inhibitor is 5 weight portions, and light trigger is 2 weight portions, and diluting monomer is 2 weight portions.
Preferably, described catalyst is DMA, and described polymerization inhibitor is MEHQ, and described light trigger is isopropyl thioxanthone (ITX), and described diluting monomer is trimethylolpropane triacrylate (TMPTA).
The invention still further relates to a kind of aforesaid thermoplastic fibre reinforced epoxy based composites and manufacturing the purposes in automotive body structure part, described mould is automotive body structure part mould.
Preferably, described automotive body structure part is electric car body bracing frame.
The present invention has following beneficial effect:
1, improve the processing and manufacturing speed of composite material structural member, can mass production be realized;
2, reach the object of automotive light weight technology, and then realize application and the popularization of electric automobile;
3, the function admirable of photocuring novel electric vehicle vehicle body bracing frame of preparation and environmental protection, to human body and surrounding enviroment without any Harmfulness analyse;
4, can rapid shaping and solidification effect meets national standard.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art and understand the present invention further, but not limit the present invention in any form.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, some distortion and improvement can also be made.These all belong to protection scope of the present invention.
The raw chemical material that following examples use is epoxy resin (E-51), acrylic acid, catalyst n, accelerine, polymerization inhibitor MEHQ, light trigger isopropyl thioxanthone (ITX), diluting monomer trimethylolpropane triacrylate (TMPTA), cleaning agent deionized water, wiping agent absolute ethyl alcohol, modification coupling agent silane (KH-560), solvent methanol, fortifying fibre is thermoplastic fibre aramid fiber woven cloth.Its combination matching is: for a × b × cmm Rectangular Parts, with gram, milliliter for measurement unit.
embodiment 1
For the thermoplastic fibre reinforced epoxy based composites of the novel intelligent electric car body bracing frame of photocuring, be prepare as follows and obtain:
(1) selected raw chemical material
The raw chemical material used is campaigned for, and carries out purity, fineness control:
Epoxy resin (E-51): 99.8%
Acrylic acid: 99.99%
DMA: 99.9%
MEHQ: 99.9%
Isopropyl thioxanthone (ITX): 99.1%
Trimethylolpropane triacrylate (TMPTA): 98%
Deionized water: 99.999%
Absolute ethyl alcohol: 99.99%
Silane coupler (KH-560): 99.9%
Methyl alcohol: 99.99%
(2) synthesizing epoxy acrylic acid
1., in four-hole boiling flask, epoxy resin (E-51) 100g ± 1g is added;
2., in four-hole boiling flask, add polymerization inhibitor MEHQ 5g ± 0.1g, and stir with agitator;
3. in isobaric dropping funel, add acrylic acid: 10g ± 0.1g, catalyst n, accelerine: 5g ± 0.1g also stirs, and makes to mix, and becomes mixed liquor;
4. four-hole boiling flask is placed on heating jacket, when making four-hole boiling flask be warming up to 60 DEG C, start evenly to drip acrylic acid and N, accelerine mixed liquor, dropwises in reaction temperature 75 DEG C ± 1 DEG C, continues to be warming up to 110 DEG C ± 1 DEG C, insulation maintains reaction 240min ± 5min, and interval 30min assaying reaction thing acidity value P, as acidity value P≤5mg/gKOH, reaction terminates; Close electric heating cover, make it naturally cool to 20 ± 3 DEG C, after cooling, be epoxy acrylate;
(3) epoxy acrylate is diluted
1. take epoxy acrylate 120g ± 1g, diluting monomer trimethylolpropane triacrylate (TMPTA) 2g ± 0.1g, its ratio is 2:1;
2. epoxy acrylate, trimethylolpropane triacrylate are placed in container, stir, be i.e. epoxy acrylate dilution;
(4) photosensitive resin is synthesized
Take epoxy acrylate dilution 122g ± 1g, measure light trigger isopropyl thioxanthone (ITX) 2g ± 0.1g, be placed in beaker, being placed in by beaker on electric heating cover and heating, heating-up temperature 40 DEG C ± 1 DEG C, limit heating, limit are stirred, it is made to become liquid colloidal, time is 30min ± 0.5min, then pours in container by solution, and the glue liquid state in container is liquid photosensitive resin;
(5) fortifying fibre thermoplastic fibre aramid fiber woven cloth modification
1. thermoplastic fibre aramid fiber woven cloth 1000g ± 2g, silane coupler (KH-560) 200g ± 1g, liquid photosensitive resin 100g ± 1g, deionized water 600g ± 1g, methyl alcohol 500g ± 1g is taken;
2. modification coupling agent (KH-560) and methyl alcohol, deionized water are mixed into mixed solution;
3. by thermoplastic fibre aramid fiber woven cloth, be placed in the container filling deionized water, then container is placed in ultrasonic cleaner concussion cleaning, time is 10min ± 1min, removes surface impurity, then takes out, be placed in vacuum drying chamber, heat oven dry, temperature is 120 DEG C ± 3 DEG C, and the time is 1440min ± 5min;
4. thermoplastic fibre aramid fiber woven cloth is put into standby coupling agent silane (KH-560) mixed solution, gentle agitation, leave standstill 30min, then take out, be placed in vacuum drying chamber, oven dry of heating, temperature is 120 DEG C ± 3 DEG C, time is 60min ± 5min, both obtains modification Plasitc fibers aramid fiber woven cloth;
(6) cleaning electrode groove
Cleaning agent deionized water be placed in electrostatic groove, then slot electrode be placed in ultrasonic cleaner, clean, the time is 5min ± 0.5min, dries;
(7) lens, speculum, grating is cleaned
With absolute ethyl alcohol, white soft material lens, speculum, grating are cleaned respectively one by one, wiping, make it clean;
(8) arrangement brush coating
Thermoplastic fibre aramid fiber woven cloth brush coating is made prepreg cloth;
(9) laying
By the thermoplastic fibre aramid fiber woven cloth laying of dipped glue in mould;
(10) prepare
The mould that laying is good is placed on ultraviolet light polymerization former and carries out curing molding;
(11) cool
Take off, be placed in cool place, clean environment cools naturally, to normal temperature 20 DEG C ± 3 DEG C, cool time is 120min;
(12) demoulding
(13) revise appearance profile, remove profile burr, dirt, make it bright and clean;
(14) inspection, assay, sign
(15) packing and storing
The product storage prepared photocureable rapid shaping is in shady and cool, dry, clean environment, and storage temperature is 20 DEG C ± 3 DEG C, relative humidity≤40%, set fire, moistureproof, sun-proof, acid/alkali-corrosion-resistant.
Claims (6)
1. a thermoplastic fibre reinforced epoxy based composites, is characterized in that, described composite prepares as follows and obtains:
Step one, fortifying fibre is put into the mixed solution mixed by modifier, solvent, water, stir, take out drying after leaving standstill, obtain modification Plasitc fibers;
Step 2, the modification Plasitc fibers of step one gained is immersed in liquid photosensitive resin, makes prepreg cloth;
Step 3, by prepreg cloth laying in a mold, be placed on ultraviolet light polymerization former and carry out curing molding;
Described fortifying fibre is 100 weight portions, and modifier is 20 weight portions, and solvent is 50 weight portions, and water is 60 weight portions, and liquid photosensitive resin is 10 weight portions;
Described fortifying fibre is thermoplastic fibre aramid fiber woven cloth; Described modifier is silane coupler; Described solvent is methyl alcohol; Described water is deionized water.
2. thermoplastic fibre reinforced epoxy based composites according to claim 1, it is characterized in that, described liquid photosensitive resin prepares as follows and obtains:
A, add polymerization inhibitor in the epoxy, stir, add by the mixed liquor of acrylic acid, catalyst mix, Reactive Synthesis epoxy acrylate;
B, in the epoxy acrylate of step a gained, add diluting monomer, stir formation dilution;
C, in the dilution of step b gained, add light trigger, heating, is stirred to formation liquid colloidal, i.e. liquid photosensitive resin.
3. thermoplastic fibre reinforced epoxy based composites according to claim 2, is characterized in that, described epoxy resin is 100 weight portions, acrylic acid is 10 weight portions, and catalyst is 5 weight portions, and polymerization inhibitor is 5 weight portions, light trigger is 2 weight portions, and diluting monomer is 2 weight portions.
4. thermoplastic fibre reinforced epoxy based composites according to claim 2, it is characterized in that, described catalyst is N, accelerine, described polymerization inhibitor is MEHQ, described light trigger is isopropyl thioxanthone, and described diluting monomer is trimethylolpropane triacrylate.
5. thermoplastic fibre reinforced epoxy based composites as claimed in claim 1 is manufacturing the purposes in automotive body structure part, and it is characterized in that, described mould is automotive body structure part mould.
6. purposes according to claim 5, is characterized in that, described automotive body structure part is electric car body bracing frame.
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| CN102774013B true CN102774013B (en) | 2015-12-09 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103660310B (en) * | 2013-11-26 | 2017-01-04 | 上海复合材料科技有限公司 | Thermoplastic fibre reinforced epoxy based composites of photocuring and preparation method thereof |
| CN103740103A (en) * | 2014-01-24 | 2014-04-23 | 深圳天鼎精细化工制造有限公司 | Aramid fiber/epoxy resin composite material and preparation method thereof |
| CN105273345B (en) * | 2015-11-03 | 2017-06-30 | 东莞智维立体成型股份有限公司 | A kind of Fanglun slurry cake enhancing light-cured resin composite and preparation method thereof |
| CN106632992B (en) * | 2016-11-15 | 2018-12-28 | 惠州市长润发涂料有限公司 | A kind of ultraviolet cured epoxy acrylic resin and preparation method |
| CN112273774A (en) * | 2020-11-10 | 2021-01-29 | 西安工程大学 | Production method of knitting reinforcement high-strength composite helmet |
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| CN1876355A (en) * | 2006-05-24 | 2006-12-13 | 太原理工大学 | Resin base composite material parts quick forming method |
| CN101489518A (en) * | 2006-06-30 | 2009-07-22 | 斯蒂克技术公司 | Fiber-reinforced composites and method for the manufacture thereof |
| CN101693779A (en) * | 2009-10-22 | 2010-04-14 | 沈阳工业大学 | Composite material and preparation method thereof |
| CN102516570A (en) * | 2011-10-21 | 2012-06-27 | 苏州大学 | Aramid fiber-reinforced rein-based composite material and preparation method thereof |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1876355A (en) * | 2006-05-24 | 2006-12-13 | 太原理工大学 | Resin base composite material parts quick forming method |
| CN101489518A (en) * | 2006-06-30 | 2009-07-22 | 斯蒂克技术公司 | Fiber-reinforced composites and method for the manufacture thereof |
| CN101693779A (en) * | 2009-10-22 | 2010-04-14 | 沈阳工业大学 | Composite material and preparation method thereof |
| CN102516570A (en) * | 2011-10-21 | 2012-06-27 | 苏州大学 | Aramid fiber-reinforced rein-based composite material and preparation method thereof |
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