CN107345000A - The recovery method of fibre reinforced composites - Google Patents
The recovery method of fibre reinforced composites Download PDFInfo
- Publication number
- CN107345000A CN107345000A CN201710625645.8A CN201710625645A CN107345000A CN 107345000 A CN107345000 A CN 107345000A CN 201710625645 A CN201710625645 A CN 201710625645A CN 107345000 A CN107345000 A CN 107345000A
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- China
- Prior art keywords
- fibre reinforced
- cracking
- reinforced composites
- fiber
- gains
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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
- C08J11/00—Recovery or working-up of waste materials
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/06—Elements
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- 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
- C08J2300/00—Characterised by the use of unspecified polymers
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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)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The invention discloses a kind of recovery method of fibre reinforced composites, fibre reinforced composites are pre-processed first；Then pretreatment gains are placed in full of in the environment of nitrogen or vacuum, heating makes the resin of fibre reinforced composites fully crack；Last recycled fiber.Fibre reinforced composites are placed in full of being cracked in the environment of nitrogen or vacuum by the present invention, so that the resin of fibre reinforced composites fully cracks, obtained fiber can rejoin resin after being crushed and composite product is made, and realize the recycling of fibre reinforced composites.
Description
Technical field
The present invention relates to a kind of recovery method of fibre reinforced composites.
Background technology
The recycling and reuse of composite have a extensive future.Various composite recovery technologies are largely being studied
During arise at the historic moment, mainly have following three types of technology：Machinery recovery, recuperation of heat and chemical recovery, these technologies all up for
Commercialization is promoted.Machinery recovery will first by composite shred and be granulated, be then sieved into again reusable fiber-rich and
Rich resin particle, but this method needs to consume mass energy and properties of product are relatively low, simultaneously because composite scrap thing
Type containing resin is very strange, and the combination of new resin is not ideal enough.Chemical recovery is intended to isolate by chemical depolymerization
Fiber simultaneously further obtains workable fiber using solvent dissolving resin, but because chemical recovery lacks flexibility, production
Middle generation chemical waste, it is caused currently not obtain positive research.Heat recycle process can only incite somebody to action in most cases
Composite is converted into heat, can seldom isolate fiber.The problem of most basic in composite recovery, is how its point
For solution into uniform particle, separation process is constantly subjected to fiber or other reinforcing materials, matrix (especially thermosetting resin matrix)
Or the restriction of adhesive.The processing of current Chinese composite is mainly to fill and burn, and causes largely to waste and pollute.
The content of the invention
The present invention provides a kind of recovery of fibre reinforced composites to solve the recovery problem of fibre reinforced composites
Method.
To realize object above, the present invention is achieved through the following technical solutions：Comprise the following steps：
Step 1: fibre reinforced composites are pre-processed；
Step 2: pretreatment gains are placed in full of in the environment of nitrogen or vacuum, heating makes fiber-reinforced composite material
The resin of material fully cracks；
Step 3: recycled fiber.
According to one embodiment of the invention, described pretreatment includes step：Cutting, washing and drying.
According to one embodiment of the invention, described furnace drying method is that nature dries or in 80 DEG C -200 DEG C of temperature
Degree is lower to dry.
According to one embodiment of the invention, in described step two, fibre reinforced composites are that glass fibre increases
During pressure product, its cracking temperature is 400 DEG C -550 DEG C；When fibre reinforced composites are fibre reinforced product, it cracks temperature
Spend for 480 DEG C -550 DEG C.
According to one embodiment of the invention, described pretreatment includes step：Cut, wash, crush and be evaporated.
According to one embodiment of the invention, the cracking of described step two be will pretreatment gains be split as it is some
Individual module is cracked respectively, the supplement fuel when gas of previous module cracking gained cracks as next module.
According to one embodiment of the invention, described cracking temperature is 400 DEG C -550 DEG C.
According to one embodiment of the invention, thing is pushed by high temperature screw rod or blade between the cracking of described each module
Material.
According to one embodiment of the invention, salt is dissolved into liquid and imports tank body storage by heat obtained by described cracking
Deposit, or outwards power supply.
According to one embodiment of the invention, the cracking of described step two in baking oven in carrying out.
According to one embodiment of the invention, described cracking gains are that carbon residue and fiber are reunited.
According to one embodiment of the invention, cracking gains are crushed, separate carbon residue during crushing.
According to one embodiment of the invention, described crushing refers to the fiber that will be cracked using pulverizer in gains
Reunion is crushed to obtain chopped fiber.
According to one embodiment of the invention, it is complete that composite product is made in the chopped fiber addition resin of gained after crushing
Into the recovery of fibre reinforced composites.
According to one embodiment of the invention, described composite product includes：Measuring table, composite mill
Tool, gear.
Technique effect
Fibre reinforced composites are placed in full of being cracked in the environment of nitrogen or vacuum by the present invention so that fiber increases
The resin of strong composite fully cracks, and obtained fiber can rejoin resin after being crushed and composite system is made
Product, realize the recycling of fibre reinforced composites.The cracking temperature of fiberglass reinforced articles is controlled at 400 DEG C -550
DEG C, fiber high temperature ageing failure can be prevented；The cracking temperature of fibre reinforced product is controlled at 480 DEG C -700 DEG C, can make resin
Fully carbonization.Pretreatment gains are split as several modules and cracked by cracking, and the gas of previous module cracking gained is made
For fuel needed for the cracking of next module, the energy can be made full use of.Salt is dissolved into liquid and imports tank body by cracking gained heat
Storage, or outwards power supply, can equally make full use of the energy.
Brief description of the drawings
The step of Fig. 1 is embodiment 1 is schemed；
The step of Fig. 2 is embodiment 2 is schemed.
Embodiment
The present invention is described in detail below in conjunction with the accompanying drawings：
Embodiment 1
As shown in figure 1, the present embodiment comprises the following steps：
Step 1: washing drying：
Fibre reinforced composites are cut to the size for causing its size to adapt to baking oven a,；
B, wash；
C, dry or dried at a temperature of 80 DEG C -200 DEG C naturally.
Step 2: above-mentioned steps gains are placed in the baking oven full of nitrogen or vacuum, heating makes resin fully crack.
Wherein, at 400 DEG C -550 DEG C, the temperature can prevent fiber high temperature aging from losing for the cracking temperature control of fiberglass reinforced articles
Effect；The cracking temperature of fibre reinforced product is controlled at 480 DEG C -550 DEG C, and the temperature can make resin fully be carbonized.
Step 3: after being cooled down obtained by above-mentioned steps containing the material of fiber and carbon residue, carried out crushing and be made
Chopped fiber, crushed using pulverizer in the present embodiment, the quality of later stage application is sensitive to carbon residue, then first by carbon residue point
From, then crushed.
Step 4: the chopped fiber of above-mentioned steps is added into resin, carry out molding and composite product is made, or in short fibre
Added in dimension after resin and obtain chopped fiber prepreg by being injected in plane surface, then composite product is made.Composite wood
Material products include measuring table, composite grinding tool, gear.
Embodiment 2
As shown in Fig. 2 the present embodiment comprises the following steps：
Step 1: pretreatment：
A, fibre reinforced composites are cut；
B, wash；
C, fibre reinforced composites are subjected to automatic crushing so that its size adapts to following step high temperature screw rod or leaf
The push of piece；
D, it is evaporated, the temperature being evaporated is 80 DEG C -200 DEG C；
Step 2: above-mentioned steps gains are placed in the baking oven full of nitrogen or vacuum, heating makes resin fully crack,
Pretreatment gains are split as into several modules in the step to be cracked respectively, the gas conduct of previous module cracking gained
Supplement fuel during next module cracking.Meanwhile after salt is dissolved into liquid importing tank body storage to make by heat obtained by cracking
It is continuous to utilize, either outwards power or carry out heat exchange with steam, supply the power of small steam turbine.Salt is stearate
Class.Material is pushed by high temperature screw rod or blade between each module.Described cracking temperature is 400 DEG C -550 DEG C.
The specific steps of the present embodiment sub-module：10000KG fibre reinforced composites, be divided into during cracking 3000KG,
Tri- modules of 3000KG and 4000KG are cracked respectively, and first 3000KG fibre reinforced composites produce when cracking
Supplement fuel of gas when being cracked as second 3000KG fibre reinforced composites, second 3000KG fiber reinforcement answer
Supplement fuel when gas caused by condensation material cracking cracks as 4000KG fibre reinforced composites.
Step 3: after reuniting obtained by above-mentioned steps containing fiber and the material of carbon residue cools down, crushing system is carried out
Chopped fiber is obtained, is crushed in the present embodiment using pulverizer, the quality of later stage application is sensitive to carbon residue, then first by carbon residue point
From, then crushed.
Step 4: the chopped fiber of above-mentioned steps is added into resin, carry out molding and composite product is made, or in short fibre
Added in dimension after resin and obtain chopped fiber prepreg by being injected in plane surface, then composite product is made.Composite wood
Material products include measuring table, composite grinding tool, gear.
Embodiment in the present invention is only used for that the present invention will be described, and is not construed as limiting the scope of claims limitation,
Other substantially equivalent replacements that those skilled in that art are contemplated that, all fall in the scope of protection of the present invention.
Claims (15)
1. a kind of recovery method of fibre reinforced composites, it is characterised in that comprise the following steps：
Step 1: fibre reinforced composites are pre-processed；
Step 2: pretreatment gains are placed in full of in the environment of nitrogen or vacuum, heating makes fibre reinforced composites
Resin fully cracks；
Step 3: recycled fiber.
2. according to the method for claim 1, it is characterised in that described pretreatment includes step：Cutting, washing and baking
It is dry.
3. according to the method for claim 2, it is characterised in that described furnace drying method be nature dry or in 80 DEG C-
Dried at a temperature of 200 DEG C.
4. according to the method for claim 2, it is characterised in that in described step two, fibre reinforced composites are glass
During glass fiber reinforced articles, its cracking temperature is 400 DEG C -550 DEG C；When fibre reinforced composites are fibre reinforced product,
Its cracking temperature is 480 DEG C -550 DEG C.
5. according to the method for claim 1, it is characterised in that described pretreatment includes step：Cutting, washing, crush
Be evaporated.
6. according to the method for claim 5, it is characterised in that the cracking of described step two is to tear pretreatment gains open
It is divided into several modules to be cracked respectively, the supplement combustion when gas of previous module cracking gained cracks as next module
Material.
7. according to the method for claim 6, it is characterised in that described cracking temperature is 400 DEG C -550 DEG C.
8. according to the method for claim 6, it is characterised in that pass through high temperature screw rod or leaf between described each module cracking
Piece pushes material.
9. according to the method for claim 6, it is characterised in that salt is dissolved into liquid and led by heat obtained by described cracking
Enter tank body storage, or outwards power supply.
10. according to the method described in claim any one of 1-9, it is characterised in that the cracking of described step two is in baking oven
Carry out.
11. according to the method for claim 10, it is characterised in that described cracking gains are that carbon residue and fiber are reunited.
12. according to the method for claim 11, it is characterised in that cracking gains are crushed, separated during crushing residual
Charcoal.
13. according to the method for claim 12, it is characterised in that described crushing refers to that using pulverizer gained will be cracked
Fiber in thing, which is reunited, to be crushed to obtain chopped fiber.
14. according to the method for claim 12, it is characterised in that the chopped fiber addition resin of gained is made compound after crushing
Material product completes the recovery of fibre reinforced composites.
15. according to the method for claim 14, it is characterised in that described composite product includes：Measuring table, answer
Condensation material grinding tool, gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625645.8A CN107345000A (en) | 2017-07-27 | 2017-07-27 | The recovery method of fibre reinforced composites |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625645.8A CN107345000A (en) | 2017-07-27 | 2017-07-27 | The recovery method of fibre reinforced composites |
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| CN107345000A true CN107345000A (en) | 2017-11-14 |
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| CN201710625645.8A Pending CN107345000A (en) | 2017-07-27 | 2017-07-27 | The recovery method of fibre reinforced composites |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108640699A (en) * | 2018-04-28 | 2018-10-12 | 中国人民解放军国防科技大学 | Method for preparing carbon/carbon preformed body by recycling carbon fiber reinforced resin matrix composite material |
| CN108997609A (en) * | 2018-08-15 | 2018-12-14 | 冀州中意复合材料股份有限公司 | A kind of recovery method of the waste and scrap generated in fibre glass product manufacture production process |
| WO2019153217A1 (en) * | 2018-02-09 | 2019-08-15 | 深圳大学 | Method for recovering high-performance carbon fiber from inorganic cementing material |
| CN112355023A (en) * | 2020-10-16 | 2021-02-12 | 江苏东科复合材料有限公司 | Waste collecting device is used in processing of carbon fiber bonnet |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103665427A (en) * | 2013-12-11 | 2014-03-26 | 上海交通大学 | Method for recovering carbon fiber by cracking waste carbon fiber composite material |
| CN103786352A (en) * | 2012-10-31 | 2014-05-14 | 辽宁辽杰科技有限公司 | Recovery utilization method of continuous fiber-reinforced thermoplastic composite waste material |
-
2017
- 2017-07-27 CN CN201710625645.8A patent/CN107345000A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103786352A (en) * | 2012-10-31 | 2014-05-14 | 辽宁辽杰科技有限公司 | Recovery utilization method of continuous fiber-reinforced thermoplastic composite waste material |
| CN103665427A (en) * | 2013-12-11 | 2014-03-26 | 上海交通大学 | Method for recovering carbon fiber by cracking waste carbon fiber composite material |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019153217A1 (en) * | 2018-02-09 | 2019-08-15 | 深圳大学 | Method for recovering high-performance carbon fiber from inorganic cementing material |
| CN108640699A (en) * | 2018-04-28 | 2018-10-12 | 中国人民解放军国防科技大学 | Method for preparing carbon/carbon preformed body by recycling carbon fiber reinforced resin matrix composite material |
| CN108640699B (en) * | 2018-04-28 | 2020-10-27 | 中国人民解放军国防科技大学 | Method for preparing carbon/carbon preformed body by recycling carbon fiber reinforced resin matrix composite material |
| CN108997609A (en) * | 2018-08-15 | 2018-12-14 | 冀州中意复合材料股份有限公司 | A kind of recovery method of the waste and scrap generated in fibre glass product manufacture production process |
| CN112355023A (en) * | 2020-10-16 | 2021-02-12 | 江苏东科复合材料有限公司 | Waste collecting device is used in processing of carbon fiber bonnet |
| CN112355023B (en) * | 2020-10-16 | 2022-03-18 | 江苏东科复合材料有限公司 | Waste collecting device is used in processing of carbon fiber bonnet |
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Application publication date: 20171114 |