CN104894843A - Surface treatment method for carbon fiber production waste used in wood-plastic composite - Google Patents
Surface treatment method for carbon fiber production waste used in wood-plastic composite Download PDFInfo
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- CN104894843A CN104894843A CN201510266723.0A CN201510266723A CN104894843A CN 104894843 A CN104894843 A CN 104894843A CN 201510266723 A CN201510266723 A CN 201510266723A CN 104894843 A CN104894843 A CN 104894843A
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- waste silk
- carbon fiber
- fiber production
- plastic composite
- silk
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- 239000002699 waste material Substances 0.000 title claims abstract description 40
- 229920000049 Carbon (fiber) Polymers 0.000 title claims abstract description 26
- 229920001587 Wood-plastic composite Polymers 0.000 title claims abstract description 26
- 239000004917 carbon fiber Substances 0.000 title claims abstract description 26
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 239000011155 wood-plastic composite Substances 0.000 title claims abstract description 26
- 238000007380 fibre production Methods 0.000 title claims abstract description 21
- 238000004381 surface treatment Methods 0.000 title claims abstract description 14
- 238000000034 method Methods 0.000 title claims description 52
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000003054 catalyst Substances 0.000 claims abstract description 17
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 17
- PYKYMHQGRFAEBM-UHFFFAOYSA-N anthraquinone Natural products CCC(=O)c1c(O)c2C(=O)C3C(C=CC=C3O)C(=O)c2cc1CC(=O)OC PYKYMHQGRFAEBM-UHFFFAOYSA-N 0.000 claims abstract description 15
- 150000004056 anthraquinones Chemical class 0.000 claims abstract description 15
- TVQLLNFANZSCGY-UHFFFAOYSA-N disodium;dioxido(oxo)tin Chemical compound [Na+].[Na+].[O-][Sn]([O-])=O TVQLLNFANZSCGY-UHFFFAOYSA-N 0.000 claims abstract description 14
- 238000005516 engineering process Methods 0.000 claims abstract description 14
- 229940079864 sodium stannate Drugs 0.000 claims abstract description 14
- 239000003513 alkali Substances 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 10
- 238000005406 washing Methods 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 3
- 230000008569 process Effects 0.000 claims description 26
- 230000002950 deficient Effects 0.000 claims description 23
- 238000007254 oxidation reaction Methods 0.000 claims description 20
- 239000000835 fiber Substances 0.000 claims description 18
- 230000003647 oxidation Effects 0.000 claims description 13
- 230000003197 catalytic effect Effects 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 12
- 239000002243 precursor Substances 0.000 claims description 9
- 238000004140 cleaning Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 abstract 2
- 239000010812 mixed waste Substances 0.000 abstract 2
- 230000007935 neutral effect Effects 0.000 abstract 1
- 239000000047 product Substances 0.000 description 30
- 238000005452 bending Methods 0.000 description 26
- 239000002023 wood Substances 0.000 description 7
- 229920003023 plastic Polymers 0.000 description 6
- 239000004033 plastic Substances 0.000 description 6
- 239000000843 powder Substances 0.000 description 6
- 230000002708 enhancing effect Effects 0.000 description 4
- 229920001903 high density polyethylene Polymers 0.000 description 4
- 239000004700 high-density polyethylene Substances 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 239000007822 coupling agent Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011157 advanced composite material Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229920001912 maleic anhydride grafted polyethylene Polymers 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000012188 paraffin wax Substances 0.000 description 2
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 1
- 244000198134 Agave sisalana Species 0.000 description 1
- 229920002748 Basalt fiber Polymers 0.000 description 1
- 229920000271 Kevlar® Polymers 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000007731 hot pressing Methods 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000009878 intermolecular interaction Effects 0.000 description 1
- 239000004761 kevlar Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004513 sizing Methods 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Catalysts (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention mainly relates to a technology for performing surface treatment on unqualified waste silk in carbon fiber production so as to enable the treated unqualified waste silk to be used in a wood-plastic composite. The technology specifically comprises the following steps: cutting mixed waste silk (wherein the contents of unqualified PAN raw silk, unqualified pre-oxidized silk and unqualified carbon filaments in the mixed waste silk are respectively 40%, 20% and 40%) in the carbon fiber production into 2mm short silk, adding 5% of an alkali liquor according to a ratio of the waste silk to the diluted alkali liquor being 1 to 4, stirring for 1h at 80 DEG C, centrifuging for removing the diluted alkali liquor, and adding water for washing twice; and adding the washed mixed silk into a reaction still, adding a catalyst (wherein the ratio of anthraquinone to sodium stannate is 1 to 2), 96% concentrated sulfuric acid, 30% hydrogen peroxide and water in sequence according to a ratio being 1 to 10 to 20 to 69, treating for 4h at 80 DEG C, centrifuging for removing a treating liquid, washing with the water till being neutral, and stoving to obtain a product, wherein after being supplemented with aquae hydrogenii dioxide, the used treating liquid can be reused.
Description
Technical field
The present invention relates to the process for treating surface that waste silk produced by a kind of carbon fiber for wood plastic composite fortifying fibre.
Background technology
In carbon fiber production process, inevitably occur that performance indications do not reach the substandard product of requirement, these defect wares can not enter normal market, be all be generally deposited in warehouse as refuse or with extremely low price for other field.The process problem of the substandard product produced in carbon fiber production process is one of each carbon fiber manufacturing enterprise urgent problem.
Substandard product in carbon fiber production process mainly contains three kinds, the defective oxidization fiber that the defective precursor produced in PAN precursor production process, preoxidation process produce and the defective carbon filament that carbonisation produces.
Wood plastic composite be waste wood and agricultural crop straw etc. after crushed, mix with plastics, then add various auxiliary agent, through hot pressing compound or the processing technology such as to melt extrude and the advanced composite material (ACM) of a kind of high-performance high added value made.Because raw material is mainly derived from waste wood and waste plastic, important function is served to alleviation timber resources pressure and solution plastic pollution problem.
But because the physico-mechanical properties of current wood plastic composite is generally on the low side, constrain the exploitation of its range of application and high-end product.Merely can not satisfy the demands from the mechanical strength of interface modification angle raising wood plastic composite, and partially modified dose exists the higher problem of cost, thus utilizing fortifying fibre to improve wood plastic composite mechanical property is then expand a good approach of its Application Areas.People has been had to add in wood plastic composite by good fibers of mechanical property such as Kevlar fiber, sisal fiber, glass fibre, basalt fibres through modified, to improve its TENSILE STRENGTH, bending strength and impact strength etc.But the price of these fibrous materials still makes the cost of wood plastic composite be in higher level.
For overcoming this shortcoming, we have proposed the waste material (comprising underproof acrylonitrile precursor, preoxided thread and carbon filament etc.) using carbon fiber production process to produce is used for wood plastic composite solution as fortifying fibre.But, due to the surface of PAN precursor, oxidization fiber and carbon filament and the compatibility of molding powder and wood powder bad, make the interface shear strength of fortifying fibre less, have impact on the performance of fortifying fibre performance, so necessary surface treatment must be carried out be applicable to wood plastic composite to make it.
The invention provides a kind of carbon fiber and produce waste silk (PAN precursor, oxidization fiber, carbon filament) process for treating surface, make the fortifying fibre after process and wood plastic composite have good compatibility.
Summary of the invention
The present invention is that a kind of substandard product by carbon fiber production process generation carries out surface treatment with the technology making it may be used for wood plastic composite fortifying fibre.
Specific practice is the short chopping that the substandard product produced in being produced by carbon fiber is cut into certain length, join in reactor after alkali cleaning, washing, then add certain density hydrogen peroxide process certain hour at anthraquinone composite catalyst, sulfuric acid under existing, filtration, drying obtain surface-treated product.
The know-why of processing procedure is as follows:
The finishing agent (as the finish of useless PAN filament surfaces, the sizing agent etc. on useless carbon filament surface) that alkaline cleaning procedure mainly removes various waste silk surface and the pollution etc. of removing in processing and management process.Water-washing process is then alkali lye residual in removing alkaline cleaning procedure.
The surface treatment principle that waste silk produced by carbon fiber is shown below:
The waste silk produced in carbon fiber production process has a common feature, and namely fibre crystallinity is higher, and surface is closely regular, less with the adhesion on plastics or wood powder surface.In strong oxidizer, catalyst and strong acid media, various waste silk surface generations oxidation to a certain extent, hydrolysis, generate amide groups, hydroxyl, amino or carboxyl, such one side due to the repulsive force between group be that PAN filament surfaces is loose, add intermolecular interaction area, the coupling agent of polar group in plastics produced on the other hand can be combined very well, adds the compatibility with plastics.In addition, the polar group of PAN filament surfaces also has good interaction with wood powder surface, adds the adhesion between them.
Detailed description of the invention
Detailed description of the invention one
Mixing waste silk (wherein defective PAN precursor 40% in carbon fiber production, defective oxidization fiber 20%, defective carbon filament 40%) be cut into the short silk that length is 2mm, in waste silk: sig water=1: the ratio of 4 adds the alkali lye of 5%, stir 1 hour at 80 DEG C, centrifugally remove sig water, add water washing 2 times.Mixing waste silk after washing adds in reactor, ratio in 1: 10: 20: 69 adds catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, 4 hours are processed at 80 DEG C, centrifugally remove treatment fluid, be washed with water to neutrality, dry and namely obtain product.
Can reuse after treatment fluid supplements hydrogen peroxide.
For the effect of test surfaces process, make enhancing wood plastic composite by following formula: high density polyethylene (HDPE) 42 parts, wood powder 40 parts, mixing 10 parts, waste silk, coupling agent (maleic anhydride grafted polyethylene) 6 parts, 2 parts, lubricant paraffin.Send in screw extruder after above-mentioned material being used high speed mixer mixing, melt extrude and obtain graininess enhancing wood plastic composite.Its mechanical property is as follows after tested, tensile strength 46.6MPa, bending strength 63.9MPa, impact strength 12.7MPa.
Detailed description of the invention two
By method described in embodiment one, just change mixing waste silk into defective PAN precursor, operating condition is identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 45.8MPa, bending strength 62.4MPa, impact strength 12.5MPa.
Detailed description of the invention three
By method described in embodiment one, just change mixing waste silk into defective oxidization fiber, operating condition is identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 43.8MPa, bending strength 60.6MPa, impact strength 11.0MPa.
Detailed description of the invention four
By method described in embodiment one, just change mixing waste silk into defective carbon filament, operating condition is identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 47.3MPa, bending strength 65.2MPa, impact strength 13.2MPa.
Detailed description of the invention five
Mixing waste silk (wherein defective PAN precursor 40%, defective oxidization fiber 20%, defective carbon filament 40%) in carbon fiber production is cut into the short silk that length is 2mm.Enhancing wood plastic composite is made: high density polyethylene (HDPE) 42 parts, wood powder 40 parts, 10 parts, undressed mixing waste silk, coupling agent (maleic anhydride grafted polyethylene) 6 parts, 2 parts, lubricant paraffin by following formula.Send in screw extruder after above-mentioned material being used high speed mixer mixing, melt extrude and obtain graininess enhancing wood plastic composite.Its mechanical property is as follows after tested, tensile strength 28.8MPa, bending strength 40.1MPa, impact strength 6.4MPa.
Detailed description of the invention six
By method described in embodiment one, difference is in waste silk: sig water=1: the ratio of 2 adds the alkali lye of 5%, all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 44.3MPa, bending strength 60.2MPa, impact strength 11.2MPa.
Detailed description of the invention seven
By method described in embodiment one, difference is in waste silk: sig water=1: the ratio of 3 adds the alkali lye of 5%, all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 45.6MPa, bending strength 61.7MPa, impact strength 11.9MPa.
Detailed description of the invention eight
By method described in embodiment one, difference is in waste silk: sig water=1: the ratio of 5 adds the alkali lye of 5%, all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 46.7MPa, bending strength 63.7MPa, impact strength 12.7MPa.
Detailed description of the invention nine
By method described in embodiment one, difference is in waste silk: sig water=1: the ratio of 7 adds the alkali lye of 5%, all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 46.8MPa, bending strength 63.9MPa, impact strength 13.0MPa.
Detailed description of the invention ten
By method described in embodiment one, difference be in 0.5: 10: 20: 69.5 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 39.4MPa, bending strength 60.2MPa, impact strength 11.1MPa.
Detailed description of the invention 11
By method described in embodiment one, difference be in 1.5: 10: 20: 68.5 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 46.4MPa, bending strength 63.9MPa, impact strength 12.9MPa.
Detailed description of the invention 12
By method described in embodiment one, difference be in 2: 10: 20: 68 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 46.8MPa, bending strength 64.5MPa, impact strength 13.4MPa.
Detailed description of the invention 13
By method described in embodiment one, difference be in 1: 6: 20: 73 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 41.6MPa, bending strength 60.1MPa, impact strength 10.3MPa.
Detailed description of the invention 14
By method described in embodiment one, difference be in 1: 8: 20: 71 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 43.4MPa, bending strength 61.7MPa, impact strength 11.8MPa.
Detailed description of the invention 15
By method described in embodiment one, difference be in 1: 12: 20: 67 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 47.4MPa, bending strength 63.8MPa, impact strength 12.8MPa.
Detailed description of the invention 16
By method described in embodiment one, difference be in 1: 15: 20: 64 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 47.6MPa, bending strength 63.6MPa, impact strength 13.2MPa.
Detailed description of the invention 17
By method described in embodiment one, difference be in 1: 10: 15: 74 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 44.4MPa, bending strength 56.8MPa, impact strength 9.7MPa.
Detailed description of the invention 18
By method described in embodiment one, difference be in 1: 10: 18: 71 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 45.5MPa, bending strength 58.7MPa, impact strength 10.8MPa.
Detailed description of the invention 19
By method described in embodiment one, difference be in 1: 10: 25: 64 ratio add catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, all the other operating conditions are identical with embodiment one, and the product obtained after tested its mechanical property is as follows, tensile strength 46.9MPa, bending strength 63.7MPa, impact strength 12.8MPa.
Detailed description of the invention 20
By method described in embodiment one, difference is catalytic oxidation treatment temperature is 60 DEG C, and all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 36.1MPa, bending strength 43.2MPa, impact strength 7.6MPa.
Detailed description of the invention 21
By method described in embodiment one, difference is catalytic oxidation treatment temperature is 70 DEG C, and all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 42.8MPa, bending strength 59.8MPa, impact strength 10.4MPa.
Detailed description of the invention 22
By method described in embodiment one, difference is catalytic oxidation treatment temperature is 90 DEG C, and all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 46.1MPa, bending strength 63.8MPa, impact strength 12.6MPa.
Detailed description of the invention 23
By method described in embodiment one, difference is the catalytic oxidation treatment time is 2 hours, and all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 37.7MPa, bending strength 53.3MPa, impact strength 9.5MPa.
Detailed description of the invention 24
By method described in embodiment one, difference is the catalytic oxidation treatment time is 3 hours, and all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 43.8MPa, bending strength 59.5MPa, impact strength 11.5MPa.
Detailed description of the invention 25
By method described in embodiment one, difference is the catalytic oxidation treatment time is 6 hours, and all the other operating conditions are identical with embodiment one, the product obtained after tested its mechanical property is as follows, tensile strength 46.7MPa, bending strength 63.2MPa, impact strength 12.5MPa.
Claims (8)
1. the defective waste silk that carbon fiber production process produces is carried out surface treatment with the technology making it may be used for wood plastic composite by one kind, it is characterized in that the technology of the present invention realizes particular by following steps: mixing waste silk (the wherein defective PAN precursor 40% in carbon fiber production, defective oxidization fiber 20%, defective carbon filament 40%) be cut into the short silk that length is 2mm, in waste silk: sig water=1: the ratio of 4 adds the alkali lye of 5%, stir 1 hour at 80 DEG C, centrifugally remove sig water, add water washing 2 times.Mixing waste silk after washing adds in reactor, ratio in 1: 10: 20: 69 adds catalyst (anthraquinone: sodium stannate=1: 2) successively, 96% concentrated sulfuric acid, 30% hydrogen peroxide and water, 4 hours are processed at 80 DEG C, centrifugally remove treatment fluid, be washed with water to neutrality, dry and namely obtain product.
2. carry out surface treatment with the technology making it may be used for wood plastic composite according to a kind of defective waste silk by carbon fiber production process generation described in claim 1, it is characterized in that the ratio of waste silk and sig water in alkaline cleaning procedure is 1: 2-6.
3. carry out surface treatment with the technology making it may be used for wood plastic composite according to a kind of defective waste silk by carbon fiber production process generation described in claim 1, it is characterized in that the catalyst of described catalytic oxidation treatment process is the mixture of anthraquinone and sodium stannate, mixed proportion is 1: 2.
4. carry out surface treatment with the technology making it may be used for wood plastic composite according to a kind of defective waste silk by carbon fiber production process generation described in claim 1, it is characterized in that the consumption of catalyst in catalytic oxidation process is 0.5-2%.
5. carry out surface treatment with the technology making it may be used for wood plastic composite according to a kind of defective waste silk by carbon fiber production process generation described in claim 1, it is characterized in that the consumption of 96% sulfuric acid in catalytic oxidation process is 6-15%.
6. carry out surface treatment with the technology making it may be used for wood plastic composite according to a kind of defective waste silk by carbon fiber production process generation described in claim 1, it is characterized in that the consumption of 30% hydrogen peroxide in catalytic oxidation process is 15-25%.
7. carry out surface treatment with the technology making it may be used for wood plastic composite according to a kind of defective waste silk by carbon fiber production process generation described in claim 1, it is characterized in that catalytic oxidation temperature is 60-90 DEG C.
8. carry out surface treatment with the technology making it may be used for wood plastic composite according to a kind of defective waste silk by carbon fiber production process generation described in claim 1, it is characterized in that the catalytic oxidation time is 2-6 hour.
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2015
- 2015-05-22 CN CN201510266723.0A patent/CN104894843B/en not_active Expired - Fee Related
Patent Citations (7)
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| CN1292394A (en) * | 2000-10-20 | 2001-04-25 | 清华大学 | Preparation method of carbon fibre reinforced cast nylon composite material |
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