CN108948664A - A kind of kaolin-epoxy resin bionic composite material and preparation method thereof - Google Patents
A kind of kaolin-epoxy resin bionic composite material and preparation method thereof Download PDFInfo
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- CN108948664A CN108948664A CN201810709250.0A CN201810709250A CN108948664A CN 108948664 A CN108948664 A CN 108948664A CN 201810709250 A CN201810709250 A CN 201810709250A CN 108948664 A CN108948664 A CN 108948664A
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- kaolin
- epoxy resin
- composite material
- bionic composite
- dopamine
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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
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/0666—Polycondensates containing five-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms
- C08G73/0672—Polycondensates containing five-membered rings, condensed with other rings, with nitrogen atoms as the only ring hetero atoms with only one nitrogen atom in the ring
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Epoxy Resins (AREA)
Abstract
The present invention relates to a kind of kaolin-epoxy resin bionic composite materials and preparation method thereof, and the kaolin-epoxy resin bionic composite material includes following component: the kaolin as made from kaolin-poly-dopamine compounded mix, epoxy resin, curing agent and catalyst.Kaolin of the invention-epoxy resin bionic composite material has " brick-mud " microstructure similar with natural seashell, it is surface-functionalized due to being carried out using poly-dopamine to kaolin, improve the interaction of kaolin and epoxy resin, the ordered arrangement of kaolin in the epoxy is realized using hot-pressing technique, to improve the mechanical strength of composite material.
Description
Technical field
The present invention relates to field of material technology, and in particular to a kind of kaolin-epoxy resin bionic composite material and its system
Preparation Method.
Background technique
The excellent physical mechanical of epoxy resin and electrical insulation capability, chemical stability, shrinkage are low, viscous with a variety of materials
It connects performance and it using the flexibility of technique is not available for other thermosetting plasticses, therefore coating, compound can be made in it
Material, casting material, adhesive, moulding material and injecting forming material are widely answered in the every field of national economy
With.It is required since the mechanical strength of pure epoxy resin is unable to satisfy the fields such as composite material, casting material and moulding material.Using adding
Adding inorganic filler mode to improve the mechanical strength of epoxy resin is a kind of effective and affordable method, is widely recognized as.
Preparing clay-epoxy resin composite material using the clay and epoxy resin intercalation synthesis of layer structure is to improve ring
A kind of effective method of the mechanical property of oxygen resin.Clay-epoxy resin composite material preparation at present is mainly concentrated
In montmorillonite-epoxy resin composite material composite material.Kaolin has the layer structure of similar montmorillonite, with whiteness
It is high, matter is soft, easy dispersion suspends in water, good plasticity and high caking property, excellent electrical insulation capability；With good
The physicochemical properties such as antiacid dissolubility, very low cation exchange capacity (CEC), preferable fire resistance.Therefore kaolin have become papermaking, ceramics,
Raw mineral materials necessary to tens industries such as rubber, chemical industry, coating, medicine and national defence.But existing prepare clay-asphalt mixtures modified by epoxy resin
For resin composite material mainly using mode is simply mixed, content is few in the epoxy for clay, leads to epoxy resin composite material power
It is limited to learn performance raising.
Summary of the invention
The object of the present invention is to provide a kind of kaolin-epoxy resin bionic composite materials and preparation method thereof, solve existing
There is the problem of poor mechanical property of the epoxy resin and its composite material in technology.
The technical proposal for solving the technical problem of the invention is: a kind of kaolin-epoxy resin bionic composite material,
It include following component: the kaolin as made from kaolin-poly-dopamine compounded mix, epoxy resin, curing agent and catalysis
Agent.
In kaolin of the invention-epoxy resin bionic composite material, as raw material kaolin and epoxy resin,
The quality proportioning of curing agent and catalyst is as follows: 50-80 parts of kaolin, 10-30 parts of epoxy resin, 1-15 parts of curing agent and catalysis
0.1-5 parts of agent.
In kaolin of the invention-epoxy resin bionic composite material, the kaolinic partial size is 5 μm~20 μm.
In kaolin of the invention-epoxy resin bionic composite material, the epoxy resin is liquid-state epoxy resin.
In kaolin of the invention-epoxy resin bionic composite material, the liquid-state epoxy resin is selected from bisphenol A-type liquid
At least one of state epoxy resin, bisphenol F-type epoxy resin, alicyclic liquid-state epoxy resin；The curing agent is selected from
At least one of methyl hexahydrophthalic anhydride, tetraethylenepentamine, m-phenylene diamine (MPD)；The catalyst be selected from 2-ethyl-4-methylimidazole,
At least one of N, N- dimethyl benzylamine, three-(dimethylamino methyl) phenol.
In kaolin of the invention-epoxy resin bionic composite material, the bionical composite wood of kaolin-epoxy resin
The tensile strength of material is 80MPa~135MPa.
The present invention also provides above-mentioned kaolin-epoxy resin bionic composite material preparation methods, comprising:
S1, reaction is mixed in kaolin, Dopamine hydrochloride aqueous solution, trishydroxymethylaminomethane buffer solution, obtained
To kaolin-poly-dopamine compounded mix；
S2, kaolin-poly-dopamine compounded mix, epoxy resin, curing agent and catalyst is uniformly mixed；
S3, by hot-forming, solidification obtains kaolin-epoxy resin bionic composite material.
In the preparation process in accordance with the present invention, in step sl, the concentration of the Dopamine hydrochloride aqueous solution is 2mg/ml-
10mg/ml；The mass volume ratio of the kaolin and Dopamine hydrochloride aqueous solution is 0.4g/ml~1g/ml；The kaolin with
Mass volume ratio between trishydroxymethylaminomethane buffer solution is 0.04g/ml~0.2g/ml.
In the preparation process in accordance with the present invention, in step sl, the time that reaction is mixed is 6~12h；In step S2
In, kaolin-poly-dopamine compounded mix, epoxy resin, curing agent and catalyst are uniformly mixed using ball grinding technique,
In, 200~1000rpm of ball milling speed；Ball-milling Time is 3~6h；In step s3, hot pressing parameters are as follows: pressure 5MPa~
30MPa, temperature are 30 DEG C~120 DEG C, and the time is 5 minutes~30 minutes；Cured mode is that staged heat cure is handled, first
The temperature of ladder heat cure processing is 80-140 DEG C, time 0.5-2h；The temperature of second ladder heat cure processing is 140-160
DEG C, time 0.5-2h；The temperature of third ladder heat cure processing is 160-200 DEG C, time 0.5-2h.
In the preparation process in accordance with the present invention, obtained kaolin-epoxy resin bionic composite material is with a thickness of 20nm
~200nm.
Implement kaolin of the invention-epoxy resin bionic composite material and preparation method thereof, has the advantages that
Kaolin of the invention-epoxy resin bionic composite material has " brick-mud " microstructure similar with natural seashell, due to
It is surface-functionalized to kaolin progress using poly-dopamine, the interaction of kaolin and epoxy resin is improved, using hot pressing
Technology realizes the ordered arrangement of kaolin in the epoxy, to improve the mechanical strength of composite material.
Detailed description of the invention
Fig. 1 is kaolin of the invention-epoxy resin bionic composite material microstructure schematic diagram.
Specific embodiment
With reference to the accompanying drawings and examples, to kaolin of the invention-epoxy resin bionic composite material and its preparation side
Method is described further:
As shown in Figure 1, being mentioned the present invention provides a kind of kaolin-epoxy resin bionic composite material and preparation method thereof
High 2 interface compatibility of epoxy resin 1 and kaolin, and ordered arrangement of the kaolin 2 in epoxy resin 1, the height prepared
" brick-mud " microstructure that ridge soil-epoxy resin bionic composite material has natural seashell similar, thus power with higher
Learn performance.
Compared with prior art, the present invention provides a kind of 2 surface modifying method of kaolin, kaolin 2 and ring are realized
The good interaction of oxygen resin 1；It is prepared for " brick-mud " microstructure with biomimetic features using hot-pressing technique, realizes poly-
The excellent mechanical strength of compound composite material；And preparation method is simple, can be used for industrialized production.
Embodiment 1
The kaolin of 500g, 1.25L Dopamine hydrochloride aqueous solution, 12.5L trishydroxymethylaminomethane buffer solution are pressed
According to ratio 2g:5mL:50mL, mixed at room temperature is stirred to react 6h, kaolin-poly-dopamine compounded mix is obtained, wherein kaolinic
Partial size is 5 μm, and the concentration of Dopamine hydrochloride aqueous solution is 2mg/ml.
By the kaolin-poly-dopamine being prepared, the bisphenol-A liquid-state epoxy resin of 300g, 150g methyl hexahydrobenzene
The 2-ethyl-4-methylimidazole of acid anhydride and 50g are placed in ball mill and are uniformly mixed, wherein ball milling speed 200rpm, Ball-milling Time
For 6h.
By it is hot-forming, solidify and obtain kaolin-epoxy resin bionic composite material of 20nm thickness, wherein heat pressing process
Are as follows: pressure 5MPa, temperature are 30 DEG C, and the time is 30 minutes.Curing process are as follows: the temperature of the first ladder heat cure processing is 80
DEG C, time 2h；The temperature of second ladder heat cure processing is 140 DEG C, time 2h；The temperature of third ladder heat cure processing
It is 160 DEG C, time 2h.
Embodiment 2
By the kaolin of 800g, 0.8L Dopamine hydrochloride aqueous solution, 4L trishydroxymethylaminomethane buffer solution according to than
Example 10g:10mL:50mL, mixed at room temperature are stirred to react 12h, kaolin-poly-dopamine compounded mix are obtained, wherein kaolinic
Partial size is 20 μm, and the concentration of Dopamine hydrochloride aqueous solution is 10mg/ml.
By the kaolin-poly-dopamine being prepared, the tetraethylenepentamine of the bisphenol F-type epoxy resin of 100g, 40g
The N of curing agent and 50g, N- dimethylbenzyl amine catalyst are placed in ball mill and are uniformly mixed, wherein ball milling speed 600rpm,
Ball-milling Time is 5h.
By it is hot-forming, solidify and obtain kaolin-epoxy resin bionic composite material of 200nm thickness, wherein hot pressing work
Skill are as follows: pressure 30MPa, temperature are 120 DEG C, and the time is 5 minutes.Curing process are as follows: the temperature of the first ladder heat cure processing
It is 140 DEG C, time 0.5h；The temperature of second ladder heat cure processing is 160 DEG C, time 0.5h；Third ladder heat cure
The temperature of processing is 200 DEG C, time 0.5h.
Embodiment 3
By the kaolin of 600g, 1.2L Dopamine hydrochloride aqueous solution, 6L trishydroxymethylaminomethane buffer solution according to than
Example 5g:10mL:50mL, mixed at room temperature is stirred to react 9h, obtains kaolin-poly-dopamine compounded mix, wherein kaolinic grain
Diameter is 10 μm, and the concentration of Dopamine hydrochloride aqueous solution is 6mg/ml.
The m-phenylene diamine (MPD) of the kaolin-poly-dopamine being prepared, the alicyclic liquid-state epoxy resin of 300g, 75g are consolidated
Three-(dimethylamino methyl) phenol catalyst of agent and 25g are placed in ball mill and are uniformly mixed, wherein ball milling speed
1000rpm, Ball-milling Time 3h.
By it is hot-forming, solidify and obtain kaolin-epoxy resin bionic composite material of 100nm thickness, wherein hot pressing work
Skill are as follows: pressure 15MPa, temperature are 60 DEG C, and the time is 15 minutes.Curing process are as follows: the temperature of the first ladder heat cure processing
It is 120 DEG C, time 1h；The temperature of second ladder heat cure processing is 150 DEG C, time 1h；Third ladder heat cure processing
Temperature be 180 DEG C, time 1h.
Embodiment 4
Difference from Example 1 is, kaolin 600g, bisphenol-A liquid-state epoxy resin 250g, methyl hexahydrophthalic anhydride
100g and 2-ethyl-4-methylimidazole 50g.Other conditions are same as Example 1.
Embodiment 5
Difference from Example 4 is that kaolinic partial size is 20 μm, kaolin-asphalt mixtures modified by epoxy resin that hot-press solidifying obtains
Rouge bionic composite material with a thickness of 150nm.Other conditions are same as Example 4.
Embodiment 6
Difference from Example 1 is, kaolin 600g, bisphenol-A liquid-state epoxy resin 250g, methyl hexahydrophthalic anhydride
10g and 2-ethyl-4-methylimidazole 1g.Other conditions are same as Example 1.
The kaolin that embodiment 1-6 is prepared-epoxy resin bionic composite material tensile strength is tested, knot
Fruit is as shown in table 1.
Table 1
| Project | Tensile strength (MPa) |
| Embodiment 1 | 80 |
| Embodiment 2 | 135 |
| Embodiment 3 | 100 |
| Embodiment 4 | 110 |
| Embodiment 5 | 120 |
| Embodiment 6 | 108 |
It should be noted that the preferred embodiment of the present invention has been described above in detail, still, the present invention is not limited to upper
The detail in embodiment is stated, within the scope of the technical concept of the present invention, technical solution of the present invention can be carried out more
Kind simple variant, these simple variants all belong to the scope of protection of the present invention.It is as described in the above specific embodiments each
A particular technique feature can be combined in any appropriate way in the case of no contradiction, in order to avoid unnecessary
Repetition, the invention will not be further described in various possible combinations.Between a variety of different embodiments of the invention
Any combination can also be carried out, as long as it does not violate the idea of the present invention, it should also be regarded as the disclosure of the present invention.
It should be understood that for those of ordinary skills, it can be modified or changed according to the above description,
Within all these improvement or transformation should all belong to the protection domain of appended claims of the present invention.
Claims (10)
1. a kind of kaolin-epoxy resin bionic composite material, which is characterized in that include following component: being made by kaolin
Kaolin-poly-dopamine compounded mix, epoxy resin, curing agent and catalyst.
2. kaolin according to claim 1-epoxy resin bionic composite material, which is characterized in that the height as raw material
Ridge soil and epoxy resin, curing agent and catalyst quality proportioning it is as follows: 50-80 parts of kaolin, 10-30 parts of epoxy resin,
1-15 parts and catalyst 0.1-5 parts of curing agent.
3. kaolin according to claim 1-epoxy resin bionic composite material, which is characterized in that described kaolinic
Partial size is 5 μm~20 μm.
4. kaolin according to claim 1-epoxy resin bionic composite material, which is characterized in that the epoxy resin
For liquid-state epoxy resin.
5. kaolin according to claim 4-epoxy resin bionic composite material, which is characterized in that the liquid epoxy
Resin in bisphenol A-type liquid epoxy resin, bisphenol F-type epoxy resin, alicyclic liquid-state epoxy resin at least one
Kind；The curing agent is selected from least one of methyl hexahydrophthalic anhydride, tetraethylenepentamine, m-phenylene diamine (MPD)；The catalyst is selected from
2-ethyl-4-methylimidazole, N, at least one of N- dimethyl benzylamine, three-(dimethylamino methyl) phenol.
6. kaolin according to claim 1-epoxy resin bionic composite material, which is characterized in that the kaolin-ring
The tensile strength of oxygen resin bionic composite material is 80MPa~135MPa.
7. kaolin-epoxy resin bionic composite material preparation side described in a kind of any one of claim 1-6 claim
Method characterized by comprising
S1, reaction is mixed in kaolin, Dopamine hydrochloride aqueous solution, trishydroxymethylaminomethane buffer solution, obtains height
Ridge soil-poly-dopamine compounded mix；
S2, kaolin-poly-dopamine compounded mix, epoxy resin, curing agent and catalyst is uniformly mixed；
S3, by hot-forming, solidification obtains kaolin-epoxy resin bionic composite material.
8. preparation method according to claim 7, which is characterized in that in step sl, the Dopamine hydrochloride aqueous solution
Concentration be 2mg/ml-10mg/ml；The mass volume ratio of the kaolin and Dopamine hydrochloride aqueous solution is 0.4g/ml~1g/
ml；Mass volume ratio between the kaolin and trishydroxymethylaminomethane buffer solution is 0.04g/ml~0.2g/ml.
9. preparation method according to claim 7, which is characterized in that in step sl, the time that reaction is mixed is 6
~12h；
In step s 2, kaolin-poly-dopamine compounded mix, epoxy resin, curing agent and catalyst is made using ball grinding technique
It is uniformly mixed, wherein 200~1000rpm of ball milling speed；Ball-milling Time is 3~6h；
In step s3, hot pressing parameters are as follows: pressure 5MPa~30MPa, temperature be 30 DEG C~120 DEG C, the time be 5 minutes~
30 minutes；Cured mode is staged heat cure processing, and the temperature of the first ladder heat cure processing is 80-140 DEG C, and the time is
0.5-2h；The temperature of second ladder heat cure processing is 140-160 DEG C, time 0.5-2h；Third ladder heat cure processing
Temperature is 160-200 DEG C, time 0.5-2h.
10. preparation method according to claim 7, which is characterized in that obtained kaolin-epoxy resin is bionical compound
Material with a thickness of 20nm~200nm.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116426069A (en) * | 2023-03-09 | 2023-07-14 | 湖南中楚新材料科技有限公司 | Polydopamine modified kaolinite reinforced flame-retardant waste resin composite material and preparation method thereof |
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| CN106167555A (en) * | 2016-04-28 | 2016-11-30 | 华南理工大学 | A kind of imitative shell environmental protection composite membrane of interpenetrating type petal design and preparation method thereof |
| CN106832782A (en) * | 2017-02-17 | 2017-06-13 | 深圳先进技术研究院 | A kind of laminal filter particle/polymer composite and preparation method thereof |
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| CN104844066A (en) * | 2015-03-27 | 2015-08-19 | 中国科学院深圳先进技术研究院 | Boron nitride paper and preparation method therefor |
| CN105774182A (en) * | 2016-03-24 | 2016-07-20 | 中国科学技术大学 | Composite material having shell nacre-imitated layered structure as well as preparation method and application of composite material |
| CN106167555A (en) * | 2016-04-28 | 2016-11-30 | 华南理工大学 | A kind of imitative shell environmental protection composite membrane of interpenetrating type petal design and preparation method thereof |
| CN106832782A (en) * | 2017-02-17 | 2017-06-13 | 深圳先进技术研究院 | A kind of laminal filter particle/polymer composite and preparation method thereof |
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| CN116426069A (en) * | 2023-03-09 | 2023-07-14 | 湖南中楚新材料科技有限公司 | Polydopamine modified kaolinite reinforced flame-retardant waste resin composite material and preparation method thereof |
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Application publication date: 20181207 |