CN108976608A - Modified tossa/PP composite material of a kind of graphene and preparation method thereof - Google Patents
Modified tossa/PP composite material of a kind of graphene and preparation method thereof Download PDFInfo
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- CN108976608A CN108976608A CN201810911828.0A CN201810911828A CN108976608A CN 108976608 A CN108976608 A CN 108976608A CN 201810911828 A CN201810911828 A CN 201810911828A CN 108976608 A CN108976608 A CN 108976608A
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- graphene
- tossa
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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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
Abstract
The invention discloses a kind of preparation methods of the modified tossa/PP composite material of graphene, the composite material is using polypropylene, tossa, modified graphene as main component, the materials such as the concentrated sulfuric acid, concentrated nitric acid, glacial acetic acid are selected, main component is handled.The specific preparation step of the composite material includes: 1) graphene modification；2) tossa grafting is handled；3) the modified tossa preparation of graphene；4) the modified tossa of graphene/PP composite material preparation.The present invention carries out acid pretreatment to graphene first, then surface grafting processing is carried out to tossa, the coupling agent that grafting uses serves as a connection, it is connected to graphene and tossa, so that graphene sheet layer is coated to tossa surface, the surface roughness of tossa is improved, to improve tossa/PP composite material intensity and toughness.Meanwhile it is more environmentally-friendly using composite material prepared by this method.
Description
Technical field
The invention belongs to automotive interior material preparation fields, more particularly to a kind of modified tossa/poly- third of graphene
Alkene composite material and preparation method.
Background technique
Since automobile enters household application market, the spreading speed of automobile is quite surprising.With economic rapid development, China's vapour
The demand of vehicle is increasingly soaring, and therefore, there is vast potential for future development in automobile accessories aftermarket.Automobile interior decoration is as vehicle body
The important composition component of system, also there is vast market prospect.
So-called automobile interior decoration is primarily referred to as automobile product used in automotive interior, is related to side's aspect of automotive interior
Face, such as door inner decoration board, automobile cushion, automatic foot-mat etc. are all automotive interior products.This parts thereof is not only
Only decoration function, functionality, safety and engineering attribute involved by them are very abundant.In recent years, for
The research of automobile interior decoration composite material is the research emphasis in automotive interior material field.In general, automotive interior material is with poly-
Propylene and/or polyester and flaxen fiber it is compound based on, which has very big mention in aspect of performance such as intensity, toughnesses
Between lift-off.
Summary of the invention
To solve the above problems, the present invention provides a kind of modified tossa/PP composite material of graphene and its
Preparation method, the composite material light, environmental protection, intensity height, good toughness.
The present invention is achieved through the following technical solutions:
A kind of modified tossa/PP composite material of graphene, the component including following parts by weight:
210-350 parts of polypropylene；
Tossa 90-150 parts of grafting；
0.5-1 parts of modified graphene；
The modified graphene is after carrying out acidification oxidation processes to graphene using the 98wt% concentrated sulfuric acid and 65 ~ 68wt% concentrated nitric acid
It obtains；The grafting tossa is to carry out grafting to tossa using 3-aminopropyltriethoxysilane to handle to obtain.
Further to improve, the tossa is the staple fiber of 20mm ~ 30mm.
A kind of preparation method of the modified tossa/PP composite material of graphene, includes the following steps:
Step 1) graphene modification: it weighs 0.5-1 parts of graphene and is placed in 20-40 parts of the 98wt% concentrated sulfuric acid, magnetic
Power stirs 4-6 hours, and oscillation 2-4 reacts hour；65 ~ 68wt% concentrated nitric acid of 10-20 parts of addition, magnetic agitation 30-60 minutes,
After reflux 60-90 minutes, reactant is taken out；It is diluted with a large amount of water, then is filtered by vacuum to obtain modified graphene；
Step 2) tossa grafting processing: tossa is dried after cleaning up；It is cut into the staple fiber of 20mm ~ 30mm again；
It weighs 2-10 parts of 3-aminopropyltriethoxysilane to be added in ethanol water, is gently mixed uniformly, it is small to place 2-4
When；PH is adjusted to 4.5~5.5 with glacial acetic acid；
Jute after weighing 90-150 parts of trimmings is immersed in 3-aminopropyltriethoxysilane solution, and 8-12 is set in leaching at room temperature
Hour, it is stirred frequently, takes out drying；
Step 3) the modified tossa preparation of graphene: modified graphene is evenly spread in deionized water, then will be at grafting
The tossa of reason immerses in graphene dispersing solution, and leaching is set 24-48 hours, is during which stirred frequently；It will treated fiber
It is dry；
Step 4) the modified tossa of graphene/PP composite material preparation: by step 3) obtained fiber and polypropylene
210-350 parts of progress mixings are uniformly mixed it；After drying, the modified tossa/PP composite material of graphene is obtained.
Further to improve, in the step 2) ethanol water be mass ratio be 4:1 dehydrated alcohol/go from
Sub- aqueous solution.
Further to improve, in the step 4): by step 3) item of obtained fiber and polypropylene at 190-200 DEG C
Mixing is carried out under part
Compared with prior art, the invention has the following advantages that
Graphene is used in the modification of jute/PP composite material by the invention, by adding graphene microchip
The modification for carrying out tossa, improves tossa surface roughness, and then improve tossa and polypropylene-base
The interface cohesive force of body makes the mechanical performance of composite material obtain promotion by a relatively large margin.By optimizing preparation process, obtain
High, good toughness the modified tossa/PP composite material of graphene to intensity.According to ISO527-2-5A and ISO180/
179 standard detections, this composite material stretch-proof intensity are greater than 44MPa, and resist bending intensity is greater than 52MPa.
Specific embodiment
Embodiment 1
(1) it graphene modification: weighs 0.5 part of graphene and is placed in 20 parts of the 98wt% concentrated sulfuric acid, magnetic agitation 4 is small
When, then vibrated 2 hours in supersonic cleaning machine；Then 10 parts of 65 ~ 68wt% concentrated nitric acid is imported again, magnetic agitation 30 minutes, is returned
Stream after sixty minutes, takes out reactant；It is diluted with a large amount of deionized waters, is filtered by vacuum after dilution using vacuum filtration machine.
(2) tossa grafting is handled: tossa is repeatedly cleaned with deionized water, is put into constant temperature blast drying oven 60
It is dried 8 hours under the conditions of DEG C；Tossa after drying is cut into the staple fiber of 20mm ~ 30mm with scissors；In addition 2 parts are weighed again
3-aminopropyltriethoxysilane be mixed into mass ratio be 4:1 dehydrated alcohol/deionized water solution in, be gently mixed
It is even, it places 2 hours；Then the PH of silane coupler solution is adjusted to 4.5~5.5 with glacial acetic acid；Weigh 90 parts of Huangs washed
Fiber crops are soaked in configured silane coupler solution, and leaching is set 8 hours at room temperature, are stirred frequently；Then take out,
It wrings out and is transferred to drying 8 hours in 60 DEG C of constant temperature blast drying ovens.
(3) the modified tossa preparation of graphene: the modified graphene after vacuum filtration is distributed in deionized water,
Vibrating 2 hours in supersonic cleaning machine makes it be uniformly dispersed, then the tossa for being grafted 3-aminopropyltriethoxysilane is soaked
Enter in graphene dispersing solution, leaching is set 24 hours, is during which stirred frequently；Then fiber taken out, wrung out, be placed in 60 DEG C of vacuum
It is 8 hours dry in baking oven.
(4) the modified tossa of graphene/PP composite material preparation: by the modified tossa of graphene after drying
90 parts and 210 parts of polypropylene, mixing is carried out using mixer under conditions of 190 DEG C, is uniformly mixed it；Then again at 60 DEG C
It is 2 hours dry in vacuum drying oven, it can be obtained the modified tossa/PP composite material of graphene.
Embodiment 2
(1) it graphene modification: weighs 0.7 part of graphene and is placed in 30 parts of the 98wt% concentrated sulfuric acid, magnetic agitation 5 is small
When, then vibrated 3 hours in supersonic cleaning machine；Then 15 parts of 65 ~ 68wt% concentrated nitric acid is imported again, magnetic agitation 45 minutes, is returned
Stream took out reactant after 75 minutes；It is diluted with a large amount of deionized waters, is filtered by vacuum after dilution using vacuum filtration machine.
(2) tossa grafting is handled: tossa is repeatedly cleaned with deionized water, is put into constant temperature blast drying oven 65
It is dried 10 hours under the conditions of DEG C；Tossa after drying is cut into the staple fiber of 20mm-30mm with scissors；In addition 6 parts are weighed
3-aminopropyltriethoxysilane be mixed into dehydrated alcohol/aqueous solution of mass ratio 4:1, be gently mixed uniformly, place 3 small
When；Then the PH of silane coupler solution is adjusted to 4.5~5.5 with glacial acetic acid；120 parts of jutes washed are weighed, are soaked
It steeps in configured silane coupler solution, leaching is set 10 hours at room temperature, is stirred frequently；It then takes out, wring out transfer
It is 10 hours dry into 65 DEG C of constant temperature blast drying ovens.
(3) the modified tossa preparation of graphene: the modified graphene after vacuum filtration is distributed in deionized water,
Vibrating 3 hours in supersonic cleaning machine makes it be uniformly dispersed, then the tossa for being grafted 3-aminopropyltriethoxysilane is soaked
Enter in graphene dispersing solution, leaching is set 36 hours, is during which stirred frequently；Then fiber taken out, wrung out, be placed in 65 DEG C of vacuum
It is 10 hours dry in baking oven.
(4) the modified tossa of graphene/PP composite material preparation: by the modified tossa of graphene after drying
120 parts and 280 parts of polypropylene, mixing is carried out using mixer under conditions of 195 DEG C, is uniformly mixed it；Then again 65
It is 3 hours dry in DEG C vacuum drying oven, it can be obtained the modified tossa/PP composite material of graphene.
Embodiment 3
(1) graphene modification: weighing 1 part of graphene and be placed in 40 parts of the 98wt% concentrated sulfuric acid, and magnetic agitation 6 hours,
It is vibrated 4 hours in supersonic cleaning machine again；Then 20 parts of 65 ~ 68wt% concentrated nitric acid is imported again, magnetic agitation 60 minutes, is flowed back
After 90 minutes, reactant is taken out；It is diluted with a large amount of deionized waters, is filtered by vacuum after dilution using vacuum filtration machine.
(2) tossa grafting is handled: tossa is repeatedly cleaned with deionized water, is put into constant temperature blast drying oven 70
It is dried 12 hours under the conditions of DEG C；Tossa after drying is cut into the staple fiber of 20mm-30mm with scissors；In addition 10 parts are weighed
3-aminopropyltriethoxysilane be mixed into dehydrated alcohol/aqueous solution of mass ratio 4:1, be gently mixed uniformly, place 4 small
When；Then the PH of silane coupler solution is adjusted to 4.5~5.5 with glacial acetic acid；150 parts of jutes washed are weighed, are soaked
It steeps in configured silane coupler solution, leaching is set 12 hours at room temperature, is stirred frequently；It then takes out, wring out transfer
It is 12 hours dry into 70 DEG C of constant temperature blast drying ovens.
(3) the modified tossa preparation of graphene: the modified graphene after vacuum filtration is distributed in deionized water,
Vibrating 4 hours in supersonic cleaning machine makes it be uniformly dispersed, then the tossa for being grafted 3-aminopropyltriethoxysilane is soaked
Enter in graphene dispersing solution, leaching is set 48 hours, is during which stirred frequently；Then fiber taken out, wrung out, be placed in 70 DEG C of vacuum
It is 12 hours dry in baking oven.
(4) the modified tossa of graphene/PP composite material preparation: by the modified tossa of graphene after drying
150 parts and 350 parts of polypropylene, mixing is carried out using mixer under conditions of 200 DEG C, is uniformly mixed it；Then again 70
It is 4 hours dry in DEG C vacuum drying oven, it can be obtained the modified tossa/PP composite material of graphene.
Claims (5)
1. a kind of modified tossa/PP composite material of graphene, which is characterized in that the component including following parts by weight:
210-350 parts of polypropylene；
Tossa 90-150 parts of grafting；
0.5-1 parts of modified graphene；
The modified graphene is after carrying out acidification oxidation processes to graphene using the 98wt% concentrated sulfuric acid and 65 ~ 68wt% concentrated nitric acid
It obtains；The grafting tossa is to carry out grafting to tossa using 3-aminopropyltriethoxysilane to handle to obtain.
2. the modified tossa/PP composite material of a kind of graphene as described in claim 1, which is characterized in that described
Tossa is the staple fiber of 20mm ~ 30mm.
3. a kind of preparation method of the modified tossa/PP composite material of graphene, which is characterized in that including walking as follows
It is rapid:
Step 1) graphene modification: it weighs 0.5-1 parts of graphene and is placed in 20-40 parts of the 98wt% concentrated sulfuric acid, magnetic
Power stirs 4-6 hours, and oscillation 2-4 reacts hour；65 ~ 68wt% concentrated nitric acid of 10-20 parts of addition, magnetic agitation 30-60 minutes,
After reflux 60-90 minutes, reactant is taken out；It is diluted with a large amount of water, then is filtered by vacuum to obtain modified graphene；
Step 2) tossa grafting processing: tossa is dried after cleaning up；It is cut into the staple fiber of 20mm ~ 30mm again；
It weighs 2-10 parts of 3-aminopropyltriethoxysilane to be added in ethanol water, is gently mixed uniformly, it is small to place 2-4
When；PH is adjusted to 4.5~5.5 with glacial acetic acid；
Jute after weighing 90-150 parts of trimmings is immersed in 3-aminopropyltriethoxysilane solution, and 8-12 is set in leaching at room temperature
Hour, it is stirred frequently, takes out drying；
Step 3) the modified tossa preparation of graphene: modified graphene is evenly spread in deionized water, then will be at grafting
The tossa of reason immerses in graphene dispersing solution, and leaching is set 24-48 hours, is during which stirred frequently；It will treated fiber
It is dry；
Step 4) the modified tossa of graphene/PP composite material preparation: by step 3) obtained fiber and polypropylene
210-350 parts of progress mixings are uniformly mixed it；After drying, the modified tossa/PP composite material of graphene is obtained.
4. a kind of preparation method of the modified tossa/PP composite material of graphene as claimed in claim 3, feature
It is, in the step 2) ethanol water is dehydrated alcohol/deionized water solution that mass ratio is 4:1.
5. a kind of preparation method of the modified tossa/PP composite material of graphene as claimed in claim 3, feature
It is, in the step 4): by step 3) obtained fiber and polypropylene carry out mixing under conditions of 190-200 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810911828.0A CN108976608A (en) | 2018-08-10 | 2018-08-10 | Modified tossa/PP composite material of a kind of graphene and preparation method thereof |
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| CN201810911828.0A CN108976608A (en) | 2018-08-10 | 2018-08-10 | Modified tossa/PP composite material of a kind of graphene and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109824980A (en) * | 2019-02-21 | 2019-05-31 | 福建工程学院 | A kind of preparation method of redox graphene modified bamboo fiber/PP composite material |
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