CN107057290A - Epoxy vingl ester resin composite and preparation method thereof - Google Patents
Epoxy vingl ester resin composite and preparation method thereof Download PDFInfo
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- CN107057290A CN107057290A CN201710312887.1A CN201710312887A CN107057290A CN 107057290 A CN107057290 A CN 107057290A CN 201710312887 A CN201710312887 A CN 201710312887A CN 107057290 A CN107057290 A CN 107057290A
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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
- C08L63/10—Epoxy resins modified by unsaturated compounds
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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
- C08L97/00—Compositions of lignin-containing materials
- C08L97/02—Lignocellulosic material, e.g. wood, straw or bagasse
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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
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/14—Polymer mixtures characterised by other features containing polymeric additives characterised by shape
- C08L2205/16—Fibres; Fibrils
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Abstract
The present invention relates to field of composite material preparation, and more particularly to a kind of epoxy vingl ester resin composite and preparation method thereof.Preparation method includes：Sprayed to after epoxy vingl ester resin and curing agent are mixed and the shaping that is heating and curing after accelerator is sprayed after cotton stalk bark fibre felt.Wherein, epoxy vingl ester resin and curing agent and the mass ratio of accelerator are 10:3‑5:3‑5.The preparation method flow is short, cost is low, environmental protection.The composite prepared has the characteristics such as intensity height, high, the wear-resisting, high temperature resistant of modulus, while having the advantages that light intensity height, quality, good toughness, with good extendability energy.
Description
Technical field
The present invention relates to field of composite material preparation, and more particularly to a kind of epoxy vingl ester resin composite and its system
Preparation Method.
Background technology
Cotton in China cultivated area is extensive, cotton stalk bast aboundresources.Cotton stalk bark fibre is easily decomposed in nature, right
The protection of living environment plays the role of important.People can utilize huge cotton stalk bark resource, and cotton stalk is converted into can profit
Textile fabric, can not only solve to prepare conventional composite materials using chemical fibre raw material is to the pollution of environment and there is lack of raw materials
Problem, has promoted the development of textile industry, and alleviates the pressure of environment, is worth promoting, and is a high point of economic construction
In place of key.
Not only cost is high for traditional synthetic fibers reinforcing material, mass energy is consumed, in process to staff
Health cause expensive damage, and material recovery is difficult, and white elephant is caused to environment.
The content of the invention
It is an object of the invention to provide a kind of preparation method of epoxy vingl ester resin composite, the preparation method energy
Consumption is few, can effectively utilize the discarded object of cotton planting, the comprehensive utilization ratio of cotton stalk be lifted, beneficial to environmental protection and sustainable development
Exhibition.
Another object of the present invention is to provide a kind of epoxy vingl ester resin composite, conventional composite materials are solved
It is without enhancing base or poor as composite stretching, bending property and water absorbing properties made from enhancing matrix using other chemical fibres
The shortcomings of.
The present invention is solved its technical problem and realized using following technical scheme：
The present invention proposes that a kind of preparation method of epoxy vingl ester resin composite includes：By epoxy vingl ester resin and
Sprayed to after curing agent mixing and the shaping that is heating and curing after accelerator is sprayed after cotton stalk bark fibre felt.Wherein, epoxy vingl ester resin
It is 10 with curing agent and the mass ratio of accelerator:3-5:3-5.
The present invention proposes a kind of epoxy vingl ester resin composite, and it is prepared by above-mentioned preparation method.
The beneficial effect of the preparation method of epoxy vingl ester resin composite of the present invention is：The preparation method passes through epoxy
Vinylite, curing agent, accelerator and cotton stalk bark fibre reaction solidification, can not only reduce production cost, to meet market
The need for, but also the requirement of sustainable development can be met, solving traditional synthetic fibers reinforcing material, not only cost is high,
Mass energy is consumed, the health to staff causes expensive damage in process, and material recovery is difficult, gives
The problem of environment causes white elephant.And the preparation method flow is short, cost is low, environmental protection.The composite wood prepared
Material has the characteristics such as intensity height, high, the wear-resisting, high temperature resistant of modulus, while having light intensity height, quality, good toughness, with good
The characteristics of extendability energy.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical scheme be clearly and completely described.Unreceipted actual conditions person, builds according to normal condition or manufacturer in embodiment
The condition of view is carried out.Agents useful for same or the unreceipted production firm person of instrument, are the conventional production that can be obtained by commercially available purchase
Product.
In the description of the invention, it is necessary to which explanation, term " first ", " second " etc. are only used for distinguishing description, without
It is understood that to indicate or imply relative importance.
Preparation method to the epoxy vingl ester resin composite of the embodiment of the present invention and epoxy vinyl tree below
Resin composite material is specifically described.
A kind of preparation method of epoxy vingl ester resin composite provided in an embodiment of the present invention：
S1, cotton stalk pretreatment；
Using opening apparatus by the cotton stalk bark shredding stripped into fine fibre beam i.e. cotton stalk bark fibre crude product, by the good fibre of shredding
Dimension raw material is put into container, the priming petock into container, and the depth of water covers fiber surface, and heating container to water temperature rises to 70 DEG C -120
DEG C, and it is incubated 20-26 hours.
Due to the cotton stalk bark fibre crude product structure consolidation after shredding, be brought into close contact between fiber and fiber together with, if directly
Connect and the good cotton stalk bark fibre crude product of shredding is subjected to degumming, increase the difficulty of degumming, be difficult degumming completely, and by force will be tight
Closely connected condensating fiber is opened with fiber spin-off, easily the structure of infringement fiber.Therefore, boiling first is carried out to cotton stalk bark fibre crude product, made
Cotton stalk bark fibre crude product water swelling is obtained, degumming is easy in the space between increased fiber and fiber.Meanwhile, cotton stalk bark fibre is thick
Product surface wettability is easier to absorb the degumming process liquid of plasma, further, increases the speed and efficiency of degumming.
S2, degumming, bleaching, softening, the first combing, drying, oil supply and second of processing；
S2.1, degumming and bleaching；
The water of the alkali metal oxide prepared is added into the storage container of the soaked cotton stalk bark fibre crude product of shredding
Solution is soaked and heated.The aqueous solution of alkali metal oxide to the cellulose on cotton stalk bark fibre crude product surface, hemicellulose,
Colloid etc. has swelling action, and can penetrate into the inside of each macromolecular makes it be cracked into monose or other small molecules, enters
And dissolve to realize degumming.Further, the amount of the alkali metal oxide aqueous solution used is the 1/20-1/30 of total water；
The alkali metal oxide used is sodium hydroxide or potassium hydroxide, the mass concentration of the aqueous solution of the alkali metal oxide used
For 10-18g/L.In the concentration range, the alkali metal oxide aqueous solution can be by the colloid on cotton stalk bark fibre crude product surface, fibre
Tie up the impurity such as element to remove, the cotton stalk bark fibre crude product after degumming will not be destroyed because of the excessive concentration of alkali metal oxide again
Fibre structure, it is ensured that the integrality of the structure of the cotton stalk bark fibre crude product subsequently obtained, and then ensure that what is subsequently prepared
The structural integrity of composite, with performances such as good stretching, extensions.
It is further preferred that also needing to be heated in scouring processes, to promote alkali metal oxide and cellulose and glue
The speed and efficiency of the impurity such as matter effect.Specifically, the temperature of heating is 80-120 DEG C, and the heat time is 2-5 hours.At this
In the heating-up temperature and heat time of scope, the impurity on cotton stalk bark fibre crude product surface can enter with alkali metal oxide well
Row reaction is to realize good degumming, if heating-up temperature or heat time are higher or lower than the scope, degumming effect can be significantly
Reduction so that the cull on cotton stalk bark fibre crude product surface is excessive.And need to carry out more subsequent treatments, and to cotton stalk bark fibre
The damage of crude product is larger.
It is further preferred that after cotton stalk bark fibre crude product degumming, using hot water to the cotton stalk bark fibre crude product after degumming
It is rinsed.Using hot water be prevent from having decomposed and dissolved impurity because temperature is reduced and to be re-attached to cotton stalk bark fibre thick
Product surface, and then reduce the efficiency of degumming.And the impurity for further promoting hydrolysis using the gravity and pressure of water using rinsing
Come off.Specifically, the temperature of the hot water used is 90-120 DEG C of water, and washing time is 2-3 times.It is further preferred that being
Ensure the efficiency of degumming, can carry out multiple degumming.
Bleaching can not only remove the natural pigment contained in cotton stalk bark fibre crude product, assign the necessary whiteness of fiber, carry
Rise its aesthetics.The other impurities remained on cotton stalk fiber are further removed simultaneously and lifting cotton stalk bark is fine to a certain extent
Tie up the wet performance of crude product.Specifically, bleaching is that the cotton stalk bark fibre crude product of degumming is placed on into the water that temperature is 80-120 DEG C
In bath so that water covers the cotton stalk bark fibre crude product of the superiors, oxidative bleaches are then added, and be incubated 1-3 hours.Adopt
It is that cotton stalk bark fibre crude product is faded using its oxidation susceptibility with oxidative bleaches, and can not be being replied after colour fading
To original color, it is ensured that the effect of bleaching.It is further preferred that being from mass percent using oxidative bleaches
30-40% hydrogen peroxide, and the amount of the hydrogen peroxide added is the 1/20-1/30 of total water.By the cotton stalk bark after colour fading
Fiber crude product is rinsed 2-3 times using water, removes the hydrogen peroxide that cotton stalk bark fibre crude product surface may be adhered to.
S2.2, softening and processing for the first time；
Because the fabric hand after bleaching is endured with all one's will, and most of is fibre bundle, and the technique being unfavorable for below is carried out, so needing
By fiber softening.The grease that cotton stalk bark fibre crude product is lost in degumming and bleaching process can be supplemented while softening, is carried
Rise the feel of cotton stalk bark fibre crude product.Specifically, softening be by the cotton stalk bark fibre crude product after bleaching temperature be 60-80 DEG C
In water-bath so that water covers the cotton stalk bark fibre crude product of the superiors, then add and softening agent, and be incubated 8-12 hours, its
In, the amount of the softening agent of addition is the 1/7-1/12 of total water.It is further preferred that the softening agent used is that amphoteric is soft
Agent and the mixture of cationic softener, both can lift the softness of softening agent at synergy, meanwhile, it is capable to prevent
Cotton stalk fiber turns yellow or changed colour.Cotton stalk bark fibre crude product after softening is rinsed 2-3 times using water, cotton stalk bark fibre is removed thick
The softening agent that product surface may be adhered to.
Impurity, the pigment on surface of cotton stalk bark fibre crude product after degumming, bleaching and softening etc. have been gone substantially
Remove, but obtained cotton stalk bark fibre crude product cluster is together, structure consolidation, single fiber dimension hplc is few.In order to solve this technology
Problem to the cotton stalk bark fibre crude product of cluster, it is necessary to comb.Specifically the cotton stalk bark fibre crude product of cluster is being installed
The carding equipment for having fine and closely woven card wire comb obtaining small cellulose or single fiber, and carding process is needed according to fiber
The progress of separating degree constantly repeatedly, until single fiber dimension hplc exceedes the 80% of cotton stalk bark fibre crude product total amount.Meanwhile, using softening
It can effectively prevent that cotton stalk fiber reconsolidates and is sticked together in follow-up drying course.
S2.3, drying, oil supply and second are combed；
Cotton stalk bark fibre crude product may contain substantial amounts of moisture in surface after degumming, bleaching, softening, combing for the first time,
If directly prepared by the cotton stalk bark fibre crude product Jing Guo above-mentioned processing and curing agent, booster response into composite, what is obtained answers
Condensation material is loosely organized, ductility, water imbibition can be reduced.Meanwhile, in order to remove the hydrone that fibrous inside is free, it is ensured that after
The correlated performance of the continuous composite prepared to cotton stalk bark fibre crude product, it is necessary to dry.
Specifically, the cotton stalk bark fibre crude product after the completion of first time is combed, which is uniformly routed in baker, is dried,
The temperature of drying is 100-150 DEG C, and drying time is 5-8 hours.Uniform laying ensure that each position of cotton stalk bark fibre crude product
It is heated evenly, it is ensured that drying effect.Meanwhile, guaranteed using above-mentioned drying temperature and drying time by cotton stalk bark fibre
Crude product is reduced as far as heating the influence to fibre structure on the premise of drying, it is ensured that the integrality of fibre structure.
Because cotton stalk bark fibre crude product hardness is larger, fibre length is long, is unfavorable for fiber and is combed on carding machine
Net, and then influence cotton stalk bark fibre to be reacted with epoxy vingl ester resin, influence the generation of composite, and obtained composite wood
The performance of material.If cotton stalk fiber hardness is big, the later stage is difficult to react with epoxy vingl ester resin when preparing, while obtained composite wood
Expect that fragility is too high, poor ductility.Accordingly, it would be desirable to cotton stalk bark fibre oil supply to soften single fiber, while promoting cotton stalk bark fibre
Reacted with epoxy vingl ester resin.Specifically, oil supply is that emulsifying agent is ejected on the cotton stalk bark fibre crude product after drying to carry out
Sealing.It is to ensure that there is emulsifying agent on cotton stalk bark fibre crude product using injection, while preventing emulsifier content too high so that cotton stalk
Hide fiber is excessively soft, reduces the performance of follow-up composite.Meanwhile, emulsifying agent is attached to cotton stalk bark fibre crude product surface too much,
It is unfavorable for cotton stalk bark fibre to contact and react with epoxy vingl ester resin.It is to promote emulsifying agent and cotton stalk bark using sealing
Fiber crude product is reacted, and accelerates emulsion process.Specific sealing means are carried out close using plastic wraps cotton stalk bark fibre crude product
Envelope.It is further preferred that emulsifying agent is mainly made up of sesame oil, oil emulsion and water.The mass ratio of the sesame oil, oil emulsion and the water that use
For 1-3：1-3：20.The sealed time is 12-16 hours.
Combing cotton stalk bark fibre crude product for the second time, it is evenly distributed, and is easy to subsequently obtain with epoxy vingl ester resin curing reaction
To composite.Specifically, treated cotton stalk bark fibre crude product is placed on into carding machine to be combed, it is evenly distributed, combed
Reason number of times obtains cotton stalk bark fibre felt for 3-5 times.
S3, prepare composite；
Because accelerator can produce violent chemical reaction together with curing agent, and then the two is first mixed will lose correspondence
Effect, it is impossible to prepare composite, therefore accelerator and curing agent need to add respectively.First, by epoxy vinyl
Resin and curing agent are mixed and stirred for uniformly, and then even application is on cotton stalk bark fibre felt, then even application accelerator, then
Solidify 1-3 hours under conditions of 30-60 DEG C, 11-15Mpa, prepare composite.Wherein, the epoxy vinyl used
Resin is 10 with curing agent and the mass ratio of accelerator:3-5:3-5.Using the epoxy vingl ester resin of aforementioned proportion, curing agent
It ensure that the fiber that epoxy vingl ester resin can be fully in cotton stalk bark fibre felt is reacted with accelerator, it is ensured that compound
The generation of material.What if the epoxy vingl ester resin used, curing agent and the ratio of accelerator were obtained below or above the scope
The performance of composite will be drastically reduced, or even can not generate composite.
A kind of epoxy vingl ester resin composite that the embodiment of the present invention is also provided.The composite passes through above-mentioned system
Preparation Method is prepared.The composite has the characteristics such as intensity height, high, the wear-resisting, high temperature resistant of modulus, utilizes cotton stalk bark fibre system
Standby epoxy vingl ester resin composite can be widely applied to the fields such as automobile, building, interior decoration.The preparation method not only may be used
To reduce production cost, the need for meeting market, but also the requirement of sustainable development can be met, solve traditional conjunction
Into fibre reinforced materials, not only cost is high, consumes mass energy, and the health to staff causes pole in process
It is big to damage, and material recovery is difficult, and white elephant is caused to environment.
The feature and performance to the present invention are described in further detail with reference to embodiments.
Embodiment 1
The present embodiment also provides a kind of method for preparing epoxy vingl ester resin composite：
Using opening apparatus by the cotton stalk bark shredding stripped into fine fibre beam i.e. cotton stalk bark fibre crude product, by the good fibre of shredding
Dimension raw material is put into container, the priming petock into container, and the depth of water covers fiber surface, and heating container to water temperature rises to 70 DEG C, and protects
Temperature 24 hours.The sodium hydrate aqueous solution that then addition mass concentration is 10g/L, the amount of the sodium hydrate aqueous solution used is total
Water 1/20, the heating-up temperature of degumming is 100 DEG C, and the heat time is 3 hours, then, by the cotton stalk bark fibre after degumming
Crude product is rinsed 2 times using 90 DEG C of water.
The cotton stalk bark fibre crude product of degumming is placed in the water-bath that temperature is 100 DEG C so that water covers the superiors
Cotton stalk bark fibre crude product, it is 35% hydrogen peroxide then to add with mass percent, and is incubated 1 hour, wherein, the peroxide of addition
The amount for changing hydrogen is the 1/20 of total water, then, and the cotton stalk bark fibre crude product after colour fading is rinsed 2 times using water.
By the cotton stalk bark fibre crude product after bleaching in temperature in 80 DEG C of water-bath so that water covers the cotton stalk of the superiors
Hide fiber crude product, is then added and softening agent, and is incubated 9 hours, wherein, the amount of the softening agent of addition is the 1/7 of total water.
Then, the cotton stalk bark fibre crude product after softening is rinsed 3 times.
Carry out first after softening to comb, until single fiber dimension hplc exceedes the 80% of cotton stalk bark fibre crude product total amount.By first
Cotton stalk bark fibre crude product after the completion of secondary combing is uniformly routed in baker and dried, and the temperature of drying is 150 DEG C, drying
Time is 6 hours.
By sesame oil, oil emulsion and water according to 1：1：20 proportionings prepare emulsifying agent, and the emulsifying agent prepared is uniformly sprayed at
On cotton stalk bark fibre crude product, and installed, sealed 16 hours with polybag.Treated cotton stalk bark fibre crude product is placed on carding machine
Combed, it is evenly distributed, carding times obtain cotton stalk bark fibre felt for 3 times.
Epoxy vingl ester resin and curing agent are mixed and stirred for uniformly, then even application is on cotton stalk bark fibre felt,
Even application accelerator, then solidifies 2 hours under conditions of 40 DEG C, 13Mpa, prepares composite again.Wherein, epoxy
Vinylite is 10 with curing agent and the mass ratio of accelerator：4：4.
Embodiment 2
What the present embodiment was provided prepares the preparation that the method for epoxy vingl ester resin composite is provided with embodiment 1 substantially
The method of epoxy vingl ester resin composite is consistent, distinguishes the reagent for being operating condition and using and changes.
Water temperature during pretreatment is 100 DEG C, and soaking time is 26 hours.During degumming, the alkali metal oxide used is water-soluble
Liquid is potassium hydroxide, and its mass concentration is 15g/L, and its usage amount is the 1/25 of total Water, and temperature during degumming is 80 DEG C,
Time is 2 hours, and the water temperature of flushing is 120 DEG C, and washing time is 3 times.
During bleaching, the mass percent of hydrogen peroxide used is 30%, and its usage amount is the 1/30 of total Water, bleaching
Temperature is 80 DEG C, and the time of bleaching is 3 hours, and the number of times rinsed using water is 3 times.
During softening, the amount of the softening agent used is the 1/10 of total water, and temperature is 60 DEG C during softening, and soaking time is 8
Hour, the number of times that water is rinsed is 3 times.The temperature and time of drying is respectively 100 DEG C, 5 hours.Sesame oil, the breast used during oil supply
The mass ratio of carburetion and water is 1：3：20, Sealing period is 14 hours, and the number of times of second of combing is 5 times.
When preparing composite, epoxy vingl ester resin is 10 with curing agent and the mass ratio of accelerator：3：5, solidification
Temperature is 30 DEG C, and pressure is 15Mpa, and hardening time is 3 hours.
Embodiment 3
What the present embodiment was provided prepares the preparation that the method for epoxy vingl ester resin composite is provided with embodiment 1 substantially
The method of epoxy vingl ester resin composite is consistent, distinguishes the reagent for being operating condition and using and changes.
Water temperature during pretreatment is 120 DEG C, and soaking time is 22 hours.During degumming, the alkali metal oxide used is water-soluble
Liquid is potassium hydroxide, and its mass concentration is 13g/L, and its usage amount is the 1/30 of total Water, and temperature during degumming is 90 DEG C,
Time is 4 hours, and the water temperature of flushing is 100 DEG C, and washing time is 3 times.
During bleaching, the mass percent of hydrogen peroxide used is 40%, and its usage amount is the 1/22 of total Water, bleaching
Temperature is 120 DEG C, and the time of bleaching is 2 hours, and the number of times rinsed using water is 2 times.
During softening, the amount of the softening agent used is the 1/12 of total water, and temperature is 70 DEG C during softening, and soaking time is 12
Hour, the number of times that water is rinsed is 2 times.The temperature and time of drying is respectively 120 DEG C, 8 hours.Sesame oil, the breast used during oil supply
The mass ratio of carburetion and water is 3：2：20, Sealing period is 12 hours, and the number of times of second of combing is 4 times.
When preparing composite, epoxy vingl ester resin is 10 with curing agent and the mass ratio of accelerator：5：4, solidification
Temperature is 60 DEG C, and pressure is 14Mpa, and hardening time is 1 hour.
Embodiment 4
What the present embodiment was provided prepares the preparation that the method for epoxy vingl ester resin composite is provided with embodiment 1 substantially
The method of epoxy vingl ester resin composite is consistent, distinguishes the reagent for being operating condition and using and changes.
Water temperature during pretreatment is 90 DEG C, and soaking time is 20 hours.During degumming, the alkali metal oxide aqueous solution used
For sodium hydroxide, its mass concentration is 18g/L, and its usage amount is the 1/22 of total Water, and temperature during degumming is 120 DEG C,
Time is 5 hours, and the water temperature of flushing is 110 DEG C, and washing time is 2 times.
During bleaching, the mass percent of hydrogen peroxide used is 33%, and its usage amount is the 1/25 of total Water, bleaching
Temperature is 90 DEG C, and the time of bleaching is 2 hours, and the number of times rinsed using water is 3 times.
During softening, the amount of the softening agent used is the 1/9 of total water, and temperature is 75 DEG C during softening, and soaking time is 10
Hour, the number of times that water is rinsed is 2 times.The temperature and time of drying is respectively 110 DEG C, 7 hours.Sesame oil, the breast used during oil supply
The mass ratio of carburetion and water is 2：1：20, Sealing period is 13 hours, and the number of times of second of combing is 5 times.
When preparing composite, epoxy vingl ester resin is 10 with curing agent and the mass ratio of accelerator：4：3, solidification
Temperature is 50 DEG C, and pressure is 11Mpa, and hardening time is 2 hours.
Embodiment 5
What the present embodiment was provided prepares the preparation that the method for epoxy vingl ester resin composite is provided with embodiment 1 substantially
The method of epoxy vingl ester resin composite is consistent, distinguishes the reagent for being operating condition and using and changes.
Water temperature during pretreatment is 110 DEG C, and soaking time is 21 hours.During degumming, the alkali metal oxide used is water-soluble
Liquid is potassium hydroxide, and its mass concentration is 16g/L, and its usage amount is the 1/27 of total Water, and temperature during degumming is 110
DEG C, the time is 4 hours, and the water temperature of flushing is 100 DEG C, and washing time is 3 times.
During bleaching, the mass percent of hydrogen peroxide used is 38%, and its usage amount is the 1/27 of total Water, bleaching
Temperature is 110 DEG C, and the time of bleaching is 3 hours, and the number of times rinsed using water is 3 times.
During softening, the amount of the softening agent used is the 1/8 of total water, and temperature is 65 DEG C during softening, and soaking time is 11
Hour, the number of times that water is rinsed is 2 times.The temperature and time of drying is respectively 135 DEG C, 6.5 hours.The sesame oil that is used during oil supply,
The mass ratio of oil emulsion and water is 3：1：20, Sealing period is 15 hours, and the number of times of second of combing is 4 times.
When preparing composite, epoxy vingl ester resin is 10 with curing agent and the mass ratio of accelerator：5：3, solidification
Temperature is 45 DEG C, and pressure is 12Mpa, and hardening time is 2 hours.
Experimental example
Comparative example 1：The preparation of composite is carried out using the preparation method consistent with embodiment 1 and step, difference exists
In epoxy vingl ester resin and curing agent and the mass ratio of accelerator be 10:1:1.
Experimental example 2：The preparation of composite is carried out using the preparation method consistent with embodiment 1 and step, difference exists
In epoxy vingl ester resin and curing agent and the mass ratio of accelerator be 10:9:7.
Comparative example 3：The preparation of composite is carried out using the preparation method consistent with embodiment 1 and step, difference exists
First time combing is not carried out in the cotton stalk bark fibre felt used.
Comparative example 4：The cotton stalk bark fibre felt that embodiment 1 is prepared.
Experimental example 1
Fracture strength test is respectively placed in embodiment 1- embodiments 5 and comparative example the 1-4 composite prepared
Instrument carries out fracture strength test.Specific test result is shown in Table 1.
The fracture strength of table 1 is tested
By table 1, embodiment 1-5 composite has good extensibility, can be carried out under certain pulling force
Extension, and the power used when being broken is larger, and its intensity is higher.And can be found to change the preparation of the present invention according to comparative example 1-3
The extensibility for the composite that condition is obtained is reduced, and the length that can extend also is reduced.And comparative example 1 and comparative example 4,
Composite, which intersects raw material cotton stalk bark fibre, has more excellent extensibility, can extend longer, intensity substantially increases.
Experimental example 2
Water absorption rate test is carried out respectively to the composite of embodiment 1- embodiments 5 and comparative example 1-4.Specific testing result
It is shown in Table 2.
The water absorbing properties of table 2 are tested
By table 2, the composite that embodiment 1-5 is prepared possesses good water absorbing properties, illustrates that it is breathed freely
It is functional.The testing result of comparative example 1 and comparative example 4 understands that water absorbing properties after composite are made in cotton stalk bark fibre
It is improved significantly.And comparative example 1 and comparative example 1-3 have found, change preparation method of the present invention or condition, what is obtained answers
The performance reduction of condensation material.
In summary, the preparation method for the epoxy vingl ester resin composite that 1-5 of the embodiment of the present invention is provided passes through ring
Oxyethylene group resin, curing agent, accelerator and cotton stalk bark fibre reaction solidification, can not only reduce production cost, to meet city
The need for, but also the requirement of sustainable development can be met, solve traditional synthetic fibers reinforcing material not only cost
Height, consumes mass energy, and the health to staff causes expensive damage in process, and material recovery is tired
Difficulty, the shortcoming of white elephant is caused to environment.And the preparation method flow is short, cost is low, environmental protection.And select cotton stalk bark
Fiber reduces the wasting of resources of cotton planting discarded object cotton stalk as raw material, improves the comprehensive utilization to cotton stalk and product is opened
Hair.The composite prepared has the characteristics such as intensity height, high, the wear-resisting, high temperature resistant of modulus, while having intensity height, quality
Gently, good toughness, with good extendability energy the characteristics of.
Embodiments described above is a part of embodiment of the invention, rather than whole embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiment in the present invention, what those of ordinary skill in the art were obtained under the premise of creative work is not made
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
1. a kind of preparation method of epoxy vingl ester resin composite, it is characterised in that including：
Spray to and be heated and cured into after spraying accelerator after cotton stalk bark fibre felt after epoxy vingl ester resin and curing agent are mixed
Type, wherein, the epoxy vingl ester resin is 10 with the curing agent and the mass ratio of the accelerator:3-5:3-5.
2. the preparation method of epoxy vingl ester resin composite according to claim 1, it is characterised in that be heating and curing
Temperature be 30-60 DEG C, pressure is 11-15Mpa, and the time is 1-3 hours.
3. the preparation method of epoxy vingl ester resin composite according to claim 1, it is characterised in that the cotton stalk
Hide fiber felt is that cotton stalk bark fibre crude product is passed through into degumming, bleaching, softening, for the first time combing, drying, oil supply and second of comb
Manage the cotton stalk bark fibre felt prepared.
4. the preparation method of epoxy vingl ester resin composite according to claim 3, it is characterised in that degumming is profit
The cotton stalk bark fibre crude product is soaked and heated with the aqueous solution of alkali metal oxide, the temperature of heating is 80-120
DEG C, the heat time is 2-5 hours.
5. the preparation method of epoxy vingl ester resin composite according to claim 3, it is characterised in that bleaching is profit
The cotton stalk bark fibre crude product after degumming is soaked and heated with oxidative bleaches, the temperature of heating is 80-120
DEG C, the heat time is 1-3 hours.
6. the preparation method of epoxy vingl ester resin composite according to claim 3, it is characterised in that softening is profit
The cotton stalk bark fibre crude product after bleaching is soaked and heated with softening agent, the temperature of heating is 60-80 DEG C, during heating
Between be 8-12 hours.
7. the preparation method of epoxy vingl ester resin composite according to claim 3, it is characterised in that comb for the first time
Reason is to be combed the cotton stalk bark fibre crude product after softening, until single fiber dimension hplc exceedes the cotton stalk bark fibre crude product
The 80% of total amount.
8. the preparation method of epoxy vingl ester resin composite according to claim 3, it is characterised in that drying be by
The cotton stalk bark fibre crude product after the completion of combing for the first time is uniformly routed in baker and dried, and the temperature of drying is
100-150 DEG C, drying time is 5-8 hours.
9. the preparation method of epoxy vingl ester resin composite according to claim 8, it is characterised in that oil supply be by
Emulsifying agent is ejected on the cotton stalk bark fibre crude product after drying and sealed, and the emulsifying agent is main by sesame oil, oil emulsion
It is made with water.
10. a kind of epoxy vingl ester resin composite, it is characterised in that it is as described in claim 1-9 any one
The preparation method of epoxy vingl ester resin composite is prepared.
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Cited By (1)
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| CN115069522A (en) * | 2022-06-30 | 2022-09-20 | 东风商用车有限公司 | Spraying and curing method of fiber felt material |
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