CN110054900A - Plant fiber enhances composite material toughening gel and preparation method thereof, plant fiber enhances composite material and preparation method - Google Patents
Plant fiber enhances composite material toughening gel and preparation method thereof, plant fiber enhances composite material and preparation method Download PDFInfo
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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
- C08J5/045—Reinforcing macromolecular compounds with loose or coherent fibrous material with vegetable or animal fibrous material
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Abstract
The present invention relates to polymer modification fields, specifically, providing a kind of plant fiber enhancing composite material toughening gel and preparation method thereof, plant fiber enhancing composite material and preparation method.The plant fiber enhancing composite material is prepared with toughening gel using vegetable oil and dibasic acid anhydride, and the molar ratio of vegetable oil and dibasic acid anhydride is 1:1-1:10, and dibasic acid anhydride includes at least one of suberic anhydride, azelaic acid acid anhydride or sebacic anhydride.The toughening gel has the rubber category feature that density is small, porosity is big and elasticity is good, is added in plant fiber enhancing composite material, can play the toughening effect of rubber like, and raw material environmental protection is renewable, low in cost.
Description
Technical field
The present invention relates to polymer modification fields, enhance composite material toughening in particular to a kind of plant fiber
Gel and preparation method thereof, plant fiber enhance composite material and preparation method.
Background technique
In recent years, the concern with people to energy conservation and environmental protection and energy problem, it is environmentally protective based on biomass
Composite material obtains extensive research and extension application.Plant fiber is gradually applied as a kind of important biological material
In polymer matrix composite.Plant fiber has from a wealth of sources, cheap, environmentally protective, degradable, renewable etc. excellent
Gesture is the biomass material for having very much application potential.However, the structure and plant fiber due to plant fibre surface complexity are hydrophilic
Characteristic, be blended with hydrophobic organic polymer processing form composite material when, the compatibility and adhesive property at interface are very
Difference, while the dispersion performance of plant fiber in the polymer is bad, causes the mechanical properties decrease of composite material, therefore, it is difficult to full
Its application requirement of foot.
In order to enable plant fiber enhancing composite property is met the requirements, plant fiber graft modification increase is generallyd use
Compatibility performance between fiber and polymer, or by adding toughener (such as thermoplastic elastomer (TPE) ternary in the composite
EP rubbers EPDM, hydrogenated styrene-butadiene block copolymer SEBS) the methods of improve composite material performance.Wherein, it adopts
The reaction reagent that harsh reaction condition and valuableness are usually required with plant fiber graft modification processing, increase material at
This.And the method for using thermoplastic elastomer rubbers toughening, although having the characteristics that preparation process is simple, cost is relatively low,
The disadvantages of there is also additive non-degradables, contamination of raw material.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of plant fiber enhancing composite material toughening gel, the toughening gel
Rubber category feature small with density, porosity is big and elasticity is good is added in plant fiber enhancing composite material, can play
The toughening effect of rubber like, and raw material environmental protection is renewable, it is low in cost.
The second object of the present invention is to provide a kind of preparation of above-mentioned plant fiber enhancing composite material toughening gel
Method.
The third object of the present invention is to provide a kind of plant fiber enhancing composite material.
The fourth object of the present invention is to provide a kind of preparation method of above-mentioned plant fiber enhancing composite material.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
In a first aspect, the present invention provides a kind of plant fibers to enhance composite material toughening gel, using vegetable oil and
Dibasic acid anhydride is prepared, and the molar ratio of vegetable oil and dibasic acid anhydride is 1:1-1:10, and dibasic acid anhydride includes suberic anhydride, nonyl two
At least one of acid anhydrides or sebacic anhydride.
As further preferred technical solution, the molar ratio of the vegetable oil and dibasic acid anhydride is 1:1-1:2.
As further preferred technical solution, the vegetable oil include tung oil, epoxidized soybean oil, castor oil, linseed oil,
At least one of rapeseed oil or peanut oil.
As further preferred technical solution, the vegetable oil includes tung oil and epoxidized soybean oil.
As further preferred technical solution, the weight ratio of the epoxidized soybean oil and tung oil is 1:0.1-1:10, excellent
It is selected as 1:2-1:10.
Second aspect, the present invention provides a kind of preparation sides of above-mentioned plant fiber enhancing composite material toughening gel
Method, comprising the following steps: vegetable oil and dibasic acid anhydride are heated and mixed until dibasic acid anhydride is completely dissolved, then and optionally
Catalyst is mixed and is reacted until forming stable spawn, then obtain the toughening gel after drying.
As further preferred technical solution, the heating temperature of vegetable oil and dibasic acid anhydride is 170-190 DEG C；
Preferably, the catalyst includes at least one of DMAP, TEBAC or DCC；
Preferably, the time of the reaction is 20-40min.
It further include to spawn after forming stable spawn as further preferred technical solution
The step of being cleaned, being then dried again；
Preferably, cleaning agent used when cleaning include in acetone, chloroform, carbon tetrachloride, dimethylbenzene or phenol at least
It is a kind of；
Preferably, drying temperature is 75-85 DEG C, drying time 20-30h；
Preferably, the drying includes vacuum drying.
The third aspect, the present invention provides a kind of plant fibers to enhance composite material, including the enhancing of above-mentioned plant fiber is again
Condensation material toughening gel or the plant fiber enhancing composite material toughening gel being prepared using above-mentioned preparation method, institute
The content for stating toughening gel is preferably 1%-30%.
Fourth aspect, the present invention provides a kind of preparation method of above-mentioned plant fiber enhancing composite material, including it is following
Step: the toughening gel, plant fiber and polymer are successively obtained into the composite wood after mixing, melting and extruding pelletization
Material.
Compared with prior art, the invention has the benefit that
Plant fiber enhancing composite material provided by the invention uses the vegetable oil and binary of special ratios with toughening gel
Acid anhydrides is prepared.The gel has the rubber category feature that density is small, porosity is big and elasticity is good, is added to plant fiber enhancing
In composite material, the toughening effect of rubber like can be played.Vegetable oil is organic natural macromolecular, and specific dibasic acid anhydride is
Small organic molecule, raw material sources are extensively, cost is relatively low, renewable, degradable, environmentally protective.
The preparation method simple process of plant fiber enhancing composite material toughening gel provided by the invention, without
Toughening gel can be obtained in harsh reaction condition, and vegetable oil and dibasic acid anhydride can form gel after crosslinking reaction, at
This is lower, and the toughening gel being prepared has the advantages that toughening effect is good, environmentally protective and low in cost.
Detailed description of the invention
Fig. 1 is PP, PP/ flaxen fiber, PP/ flaxen fiber/19 composite material of embodiment impact property comparison diagram；
Fig. 2 is PP, PP/ flaxen fiber, PP/ flaxen fiber/19 composite material of embodiment tensile property comparison diagram.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.
It should be understood that
In the present invention, if without particularly illustrating, all embodiments mentioned in this article and preferred implementation method
It can be combined with each other to form new technical solution.
In the present invention, if without particularly illustrating, all technical characteristics and preferred feature mentioned in this article can be with
Intercombination forms new technical solution.
In the present invention, unless otherwise indicated, numberical range " a-b " indicates the breviary of any real combinings between a to b
It indicates, wherein a and b is real number.Such as numberical range " 170-190 " expression all lists " 170-190 " herein
Between whole real numbers, " 170-190 " be these combinations of values breviary indicate.
Unless otherwise indicated, profession used herein and meaning phase known to scientific term and one skilled in the art
Together.In addition, any method similar to or equal to what is recorded or material can also be applied in the present invention.
According to an aspect of the present invention, a kind of plant fiber enhancing composite material is provided at least one embodiment
With toughening gel, it is prepared using vegetable oil and dibasic acid anhydride, the molar ratio of vegetable oil and dibasic acid anhydride is 1:1-1:10, two
First acid anhydrides includes at least one of suberic anhydride, azelaic acid acid anhydride or sebacic anhydride.
Above-mentioned plant fiber enhancing composite material is prepared with toughening gel using the vegetable oil and dibasic acid anhydride of special ratios
It forms, which has the rubber category feature that density is small, porosity is big and elasticity is good, is added to plant fiber enhancing composite material
In, the toughening effect of rubber like can be played.Also, vegetable oil is organic natural macromolecular, and specific dibasic acid anhydride is to have
Machine small molecule, raw material sources are extensively, cost is relatively low, renewable, degradable, environmentally protective.
It should be understood that
Above-mentioned " plant fiber enhancing composite material " refers to using plant fiber as reinforcement, is formed using polymer by matrix
Composite material.
Above-mentioned " toughening gel " refers to the gel for playing toughening effect.
Above-mentioned " vegetable oil " include but is not limited to epoxidized soybean oil, tung oil, castor oil, linseed oil, rapeseed oil, peanut oil,
Cottonseed oil or sunflower oil etc..
Above-mentioned " dibasic acid anhydride " refers to tool, and there are two the long linear type dibasic acid anhydrides of carboxylic functional groups.Above-mentioned dibasic acid anhydride
Including but not limited to suberic anhydride, azelaic acid acid anhydride, sebacic anhydride, the mixture of suberic anhydride and azelaic acid acid anhydride, azelaic acid acid anhydride and
The mixture or suberic anhydride of the mixture of sebacic anhydride, suberic anhydride and sebacic anhydride, azelaic acid acid anhydride and sebacic anhydride it is mixed
Close object etc..
The molar ratio of above-mentioned vegetable oil and dibasic acid anhydride can be such as 1:1,1:1.25,1:1.5,1:1.75,1:2,1:
3,1:4,1:5,1:6,1:7,1:8,1:9 or 1:10 etc..
In a preferred embodiment, the molar ratio of the vegetable oil and dibasic acid anhydride is 1:1-1:2.Work as vegetable oil
When molar ratio with dibasic acid anhydride is 1:1-1:2, the porosity of gained toughening gel is bigger and elasticity is more preferable, therefore to composite wood
The toughening effect of material is more preferable.
In a preferred embodiment, the vegetable oil includes tung oil, epoxidized soybean oil, castor oil, linseed oil, dish
At least one of seed oil or peanut oil.Above-mentioned vegetable oil includes but is not limited to following several: tung oil, epoxidized soybean oil, castor-oil plant
The combination of the combination of oil, linseed oil, rapeseed oil, peanut oil, tung oil and epoxidized soybean oil, castor oil and linseed oil, rapeseed oil and
The combination of peanut oil, tung oil, the combination or linseed oil of epoxidized soybean oil and castor oil, the combination of rapeseed oil and peanut oil etc..
Preferably, the vegetable oil includes tung oil and epoxidized soybean oil.Tung oil has light specific gravity, adhesive force strong, heat-resisting, resistance to
Sour and alkaline-resisting feature；Epoxidized soybean oil has excellent thermal stability and photostability, and water resistance and oil resistivity are also good, can assign
Give the good mechanical strength of product, weatherability.When vegetable oil includes tung oil and epoxidized soybean oil, which can be played
The comprehensive advantage of tung oil and epoxidized soybean oil improves its toughening effect to further decrease the density of toughening gel.
Preferably, the weight ratio of the epoxidized soybean oil and tung oil is 1:0.1-1:10, preferably 1:2-1:10.It is above-mentioned heavy
Amount is than typical but non-limiting for 1:0.1,1:0.5,1:1,1:2,1:3,1:4,1:5,1:6,1:7,1:8,1:9 or 1:10.
When the weight ratio of tung oil and epoxidized soybean oil within the above range when, it is more preferable with the cross-linking effect of dibasic acid anhydride, can further
Improve the toughening effect of gel.
According to another aspect of the present invention, it is compound that a kind of above-mentioned plant fiber enhancing is provided at least one embodiment
The preparation method of material toughening gel, comprising the following steps: vegetable oil and dibasic acid anhydride are heated and mixed until binary acid
Acid anhydride is completely dissolved, and is then mixed and is reacted until forming stable spawn, then obtain after drying with optionally catalyst
To the toughening gel.
Toughening gel can be obtained without harsh reaction condition in above-mentioned preparation method simple process, vegetable oil and
Dibasic acid anhydride crosslink reaction after can form gel, cost is relatively low, the toughening gel being prepared have toughening effect it is good,
Environmentally protective and low in cost advantage.
Above-mentioned " being completely dissolved " refers to that dibasic acid anhydride is dissolved in vegetable oil, and dibasic acid anhydride all becomes liquid and and plant
Oil is uniformly mixed.
Above-mentioned " stable spawn " refers to the cotton-shaped atrament formed in reaction solution.
In a preferred embodiment, the heating temperature of vegetable oil and dibasic acid anhydride is 170-190 DEG C.Above-mentioned heating
It is 170 DEG C that temperature is typical but non-limiting, 172 DEG C, 174 DEG C, 176 DEG C, 178 DEG C, 180 DEG C, 182 DEG C, 184 DEG C, 186 DEG C,
188 DEG C or 190 DEG C.
Optionally, vegetable oil and dibasic acid anhydride, which are placed in oil bath, heats, and/or, to the two by the way of magnetic agitation
It is mixed.
Preferably, the catalyst includes at least one of DMAP, TEBAC or DCC.DMAP(4-
Dimethylaminopyridine, 4-dimethylaminopyridine) be a kind of superpower nucleophilic acylation catalyst；TEBAC
(Benzyltriethylaminiumchloride, benzyltriethylammoinium chloride) is a kind of phase transfer catalyst；DCC
(Dicyclohexylcarbodiimide, dicyclohexylcarbodiimide) also can be used in being catalyzed, and improve reaction rate.It is above-mentioned to urge
The typical but non-limiting combination for DMAP, TEBAC, DCC, DMAP and TEBAC of agent, the combination of TEBAC and DCC, or
The combination of DMAP, TEBAC and DCC.
Preferably, the time of the reaction is 20-40min.The above-mentioned time it is typical but non-limiting for 20min,
22min, 24min, 26min, 28min, 30min, 32min, 34min, 36min, 38min or 40min.It is anti-by the above time
Ying Hou can obtain stable spawn.
In a preferred embodiment, after forming stable spawn, further include to spawn into
Row cleaning, the step of being then dried again.
Preferably, cleaning agent used when cleaning include in acetone, chloroform, carbon tetrachloride, dimethylbenzene or phenol at least
It is a kind of.It is acetone that above-mentioned cleaning agent is typical but non-limiting, chloroform, carbon tetrachloride, dimethylbenzene, phenol, acetone and chloroform
Combination, the combination of carbon tetrachloride and dimethylbenzene, the combination or acetone of dimethylbenzene and phenol, the combination of chloroform and carbon tetrachloride etc..
Optionally, wash number is 2-3 times.
In a preferred embodiment, drying temperature is 75-85 DEG C, drying time 20-30h.Above-mentioned dry temperature
Spending typical but non-limiting is 75 DEG C, 76 DEG C, 77 DEG C, 78 DEG C, 79 DEG C, 80 DEG C, 81 DEG C, 82 DEG C, 83 DEG C, 84 DEG C or 85 DEG C；
Above-mentioned drying time it is typical but non-limiting for 20h, 21h, 22h, 23h, for 24 hours, 25h, 26h, 27h, 28h, 29h or 30h.
Preferably, the drying includes vacuum drying.Vacuum drying drying efficiency is higher, and is more conducive to being formed more
The gel of cavernous structure.
The density for the toughening gel being prepared through the above method is 0.7~0.8g/cm3, porosity 80% or so, bending
Modulus 100MPa or so.
According to another aspect of the present invention, a kind of plant fiber enhancing composite wood is provided at least one embodiment
Material, including above-mentioned plant fiber enhance composite material toughening gel, and the content of the toughening gel is preferably 1%-30%.It should
Plant fiber enhancing composite material includes above-mentioned plant fiber enhancing composite material toughening gel, thus has toughness strong, green
Colour circle is protected and advantage at low cost.
Above-mentioned content refers to the weight percent of toughening gel in the composite.Above-mentioned content is typical but non-limiting
For 1%, 2%, 4%, 6%, 8%, 10%, 12%, 14%, 16%, 18%, 20%, 22%, 24%, 26%, 28% or
30%.
According to another aspect of the present invention, it is compound that a kind of above-mentioned plant fiber enhancing is provided at least one embodiment
The preparation method of material, comprising the following steps: by the toughening gel, plant fiber and polymer successively through mixing, melting and
The composite material is obtained after extruding pelletization.
Optionally, melting temperature is 170-190 DEG C.It is 170 DEG C that above-mentioned melting temperature is typical but non-limiting, 172 DEG C,
174 DEG C, 176 DEG C, 178 DEG C, 180 DEG C, 182 DEG C, 184 DEG C, 186 DEG C, 188 DEG C or 190 DEG C.
In addition, the step of above-mentioned mixing, melting and extruding pelletization, carries out in such a way that this field can be realized, this
Invention is not particularly limited this.
Below with reference to embodiment and comparative example, the present invention will be further described in detail.
Embodiment 1
A kind of plant fiber enhancing composite material toughening gel, is prepared, cottonseed using cottonseed oil and suberic anhydride
The molar ratio of oil and suberic anhydride is 1:5.
Embodiment 2
A kind of plant fiber enhancing composite material toughening gel, is prepared, cottonseed using cottonseed oil and dibasic acid anhydride
The molar ratio of oil and dibasic acid anhydride is 1:8, and dibasic acid anhydride is the mixture of the suberic anhydride that molar ratio is 1:1 and azelaic acid acid anhydride.
Embodiment 3
A kind of plant fiber enhancing composite material toughening gel, is prepared, cottonseed using cottonseed oil and sebacic anhydride
The molar ratio of oil and sebacic anhydride is 1:10.
Embodiment 4-6
A kind of plant fiber enhancing composite material toughening gel, as different from Example 3, cottonseed in embodiment 4-6
The molar ratio of oil and sebacic anhydride is respectively 1:1,1:2 and 1:1.25.
Embodiment 7
A kind of plant fiber enhancing composite material toughening gel, is prepared, castor-oil plant using castor oil and sebacic anhydride
The molar ratio of oil and sebacic anhydride is 1:1.25.
Embodiment 8
A kind of plant fiber enhancing composite material toughening gel, is prepared using epoxidized soybean oil and sebacic anhydride,
The molar ratio of epoxidized soybean oil and sebacic anhydride is 1:1.25.
Embodiment 9
A kind of plant fiber enhancing composite material toughening gel, is prepared, plant using vegetable oil and sebacic anhydride
The molar ratio of oil and sebacic anhydride is 1:1.25, and vegetable oil is the epoxidized soybean oil and tung oil that weight ratio is 1:15.
Embodiment 10-13
A kind of plant fiber enhancing composite material toughening gel, as different from Example 9, in embodiment 10-13, ring
The weight ratio of oxygen soybean oil and tung oil is respectively 1:0.1,1:2,1:5 and 1:10.
As different from Example 9, in embodiment 10-13 the weight ratio of epoxidized soybean oil and tung oil in the preferred model of the present invention
In enclosing, the weight ratio of epoxidized soybean oil and tung oil is in further preferably range of the invention in embodiment 11-13.
The preparation method of plant fiber enhancing composite material toughening gel in embodiment 1-13, comprising the following steps: will
Vegetable oil and dibasic acid anhydride heat and mix until dibasic acid anhydride be completely dissolved, then mix with catalyst and react until formation
Stable spawn, then the toughening gel is obtained after drying.
Embodiment 14
The preparation method of the enhancing composite material toughening gel of plant fiber described in embodiment 13, comprising the following steps:
By vegetable oil and sebacic anhydride oil bath heating to 170 DEG C and using magnetic agitation until dibasic acid anhydride be completely dissolved, then with
DMAP is mixed and is reacted 40min to forming stable spawn, then is cleaned 3 times using acetone, then dry in 70 DEG C of vacuum
The toughening gel is obtained after dry 18h.
Embodiment 15
A kind of preparation method of plant fiber enhancing composite material toughening gel, as different from Example 14, this reality
Applying heating temperature in example is 190 DEG C, reaction time 20min.
Embodiment 16
A kind of preparation method of plant fiber enhancing composite material toughening gel, as different from Example 14, this reality
Applying heating temperature in example is 180 DEG C, reaction time 30min.
Embodiment 17
A kind of preparation method of plant fiber enhancing composite material toughening gel, as different from Example 16, this reality
Applying drying temperature in example is 75 DEG C, drying time 30h.
Embodiment 18
A kind of preparation method of plant fiber enhancing composite material toughening gel, as different from Example 17, this reality
Applying drying temperature in example is 85 DEG C, drying time 20h.
Embodiment 19
A kind of preparation method of plant fiber enhancing composite material toughening gel, as different from Example 17, this reality
Applying drying temperature in example is 80 DEG C, and drying time is for 24 hours.
Comparative example 1
A kind of plant fiber enhancing composite material toughening gel, is prepared, cottonseed using cottonseed oil and succinic anhydride
The molar ratio of oil and succinic anhydride is 1:5.
Unlike the first embodiment, suberic anhydride is replaced for succinic anhydride in this comparative example.
Comparative example 2
A kind of plant fiber enhancing composite material toughening gel, is prepared, cottonseed oil using cottonseed oil and adipic acid
Molar ratio with adipic acid is 1:5.
Unlike the first embodiment, suberic anhydride is replaced for adipic acid in this comparative example.
Comparative example 3
A kind of plant fiber enhancing composite material toughening gel, is prepared, cotton using cottonseed oil and poly- azelaic acid acid anhydride
The molar ratio of seed oil and poly- azelaic acid acid anhydride is 1:5.
Unlike the first embodiment, suberic anhydride is replaced for poly- azelaic acid acid anhydride in this comparative example.
Comparative example 4
A kind of plant fiber enhancing composite material toughening gel, is prepared, cottonseed using cottonseed oil and suberic anhydride
The molar ratio of oil and suberic anhydride is 1:0.5.
Unlike the first embodiment, in this comparative example the molar ratio of cottonseed oil and suberic anhydride not provided by the present invention
In the range of.
Comparative example 5
A kind of plant fiber enhancing composite material toughening gel, is prepared, cottonseed using cottonseed oil and suberic anhydride
The molar ratio of oil and suberic anhydride is 1:20.
Unlike the first embodiment, in this comparative example the molar ratio of cottonseed oil and suberic anhydride not provided by the present invention
In the range of.
Respectively by each embodiment and each comparative example plant fiber enhancing composite material toughening gel and flaxen fiber and
PP (Polypropylene, polypropylene) successively obtains composite material after mixing, melting, extrusion and granulation, wherein toughening gel
Content be 20%.
Effect test
Respectively in PP material, PP/ flaxen fiber material, PP/ flaxen fiber/EPDM and each embodiment and comparative example of aforementioned use
Toughening gel made of composite material be tested for the property, test be shown in Table 1.
Test method: it is carried out according to GB/T1451-2005 " fibre reinforced plastics freely-supported beam type impact ductility test method "
Impact property test carries out tensile property test according to GB/T1447-2005 " fibre reinforced plastics Erichsen test method ".
Table 1
As can be known from Table 1, comparative example 1-5, PP is superior to using the comprehensive performance of composite material made from embodiment 1-19
Material and PP/ flaxen fiber material, and its performance is suitable with PP/ flaxen fiber/EPDM material, thus illustrates plant provided by the invention
Fibre reinforced composites toughening gel can effectively enhance the toughness of composite material, can be used for substituting existing thermoplastic elastomehc
Property body rubber class toughener.
Further analysis shows that the comprehensive performance of embodiment 4-6 is better than embodiment 3, illustrate using currently preferred plant
The ratio of object oil and dibasic acid anhydride can further increase the toughening effect of toughening gel.
The comprehensive performance of embodiment 9 is better than embodiment 6-8, illustrates further mention using currently preferred vegetable oil
The toughening effect of high toughening gel；The comprehensive performance of embodiment 10-13 is better than embodiment 9, illustrates using currently preferred ring
The ratio of oxygen soybean oil and tung oil can further increase the toughening effect of toughening gel；The comprehensive performance of embodiment 11-13 is excellent
In embodiment 10, illustrate that toughening can be further increased using the ratio of the present invention further preferred epoxidized soybean oil and tung oil
The toughening effect of gel.
The comprehensive performance of embodiment 14-16 is better than embodiment 13, illustrates using currently preferred heating temperature and reaction
Time can further increase the toughening effect of toughening gel；The comprehensive performance of embodiment 17-19 is better than embodiment 16, and explanation is adopted
The toughening effect of toughening gel can be further increased with currently preferred drying temperature and drying time.
In addition, can be seen that using the toughening gel in the embodiment of the present application 19 from Fig. 1 and Fig. 2 to fibrilia modified
PP material be modified after, impact resistance significantly improves, and impact strength is doubled left and right, and its tensile property is simultaneously
Without being substantially reduced, thus illustrate that toughening gel provided by the invention imitates fibrilia modified PP material with good toughening
Fruit can significantly improve its comprehensive performance.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from of the invention
Many other change and modification can be made in the case where spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (10)
1. a kind of plant fiber enhances composite material toughening gel, which is characterized in that prepared using vegetable oil and dibasic acid anhydride
It forms, the molar ratio of vegetable oil and dibasic acid anhydride is 1:1-1:10, and dibasic acid anhydride includes suberic anhydride, azelaic acid acid anhydride or decanedioic acid
At least one of acid anhydride.
2. plant fiber according to claim 1 enhances composite material toughening gel, which is characterized in that the vegetable oil
Molar ratio with dibasic acid anhydride is 1:1-1:2.
3. plant fiber according to claim 1 or 2 enhances composite material toughening gel, which is characterized in that the plant
Object oil includes at least one of tung oil, epoxidized soybean oil, castor oil, linseed oil, rapeseed oil or peanut oil.
4. plant fiber according to claim 3 enhances composite material toughening gel, which is characterized in that the vegetable oil
Including tung oil and epoxidized soybean oil.
5. plant fiber according to claim 4 enhances composite material toughening gel, which is characterized in that the epoxy is big
The weight ratio of soya-bean oil and tung oil is 1:0.1-1:10, preferably 1:2-1:10.
6. preparation method of the described in any item plant fiber enhancing composite materials of claim 1-5 with toughening gel, feature
It is, comprising the following steps: vegetable oil and dibasic acid anhydride are heated and mixed until dibasic acid anhydride is completely dissolved, then and optionally
Ground catalyst is mixed and is reacted until forming stable spawn, then obtain the toughening gel after drying.
7. preparation method according to claim 6, which is characterized in that the heating temperature of vegetable oil and dibasic acid anhydride is 170-
190℃；
Preferably, the catalyst includes at least one of DMAP, TEBAC or DCC；
Preferably, the time of the reaction is 20-40min.
8. preparation method according to claim 6 or 7, which is characterized in that after forming stable spawn, also wrap
The step of including and spawn cleaned, being then dried again；
Preferably, cleaning agent used when cleaning includes at least one of acetone, chloroform, carbon tetrachloride, dimethylbenzene or phenol；
Preferably, drying temperature is 75-85 DEG C, drying time 20-30h；
Preferably, the drying includes vacuum drying.
9. a kind of plant fiber enhances composite material, which is characterized in that including the described in any item plant fibers of claim 1-5
Enhancing composite material toughening gel or the plant fiber being prepared using the described in any item preparation methods of claim 6-8
Enhance composite material toughening gel, the content of the toughening gel is preferably 1%-30%.
10. the preparation method of plant fiber enhancing composite material as claimed in claim 9, which comprises the following steps:
The toughening gel, plant fiber and polymer are successively obtained into the composite material after mixing, melting and extruding pelletization.
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