CN110128778A - A kind of preparation method of resin based carbon fiber composite material mobile phone shell - Google Patents
A kind of preparation method of resin based carbon fiber composite material mobile phone shell Download PDFInfo
- Publication number
- CN110128778A CN110128778A CN201910342030.3A CN201910342030A CN110128778A CN 110128778 A CN110128778 A CN 110128778A CN 201910342030 A CN201910342030 A CN 201910342030A CN 110128778 A CN110128778 A CN 110128778A
- Authority
- CN
- China
- Prior art keywords
- carbon fiber
- resin
- mobile phone
- phone shell
- based carbon
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/02—Elements
- C08K3/04—Carbon
- C08K3/042—Graphene or derivatives, e.g. graphene oxides
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/38—Boron-containing compounds
- C08K2003/382—Boron-containing compounds and nitrogen
- C08K2003/385—Binary compounds of nitrogen with boron
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
The invention discloses a kind of preparation method of resin based carbon fiber composite material mobile phone shell, this method are as follows: one, resin and boron nitride powder and graphene are mixed；Two, it carbon fiber sheet impregnating resin mixed liquor and dries；Three, it is pressed and molded；Four, resin impregnation；Five, curing process；Six, be machined and polish molding, so that resin based carbon fiber composite material mobile phone shell be made.The present invention using Carbon fibe high intensity, high-modulus, low-density, it is anti-oxidant and corrosion-resistant the advantages that；The features such as the wear-resisting of boron nitride, good thermal shock, intensity are high, thermal expansion coefficient is small；The high thermal conductivity of graphene, it is high-intensitive the advantages that.The resin based carbon fiber composite material mobile phone shell of preparation has many advantages, such as that light-weight, wearability is good, high mechanical strength, corrosion-resistant, heat transfer is fast.
Description
Technical field
The present invention relates to Cellphone Accessories technical fields, are related to a kind of preparation of the mobile phone shell of resin based carbon fiber composite material
Method.
Background technique
With the rapid development of mechanics of communication, the popularization and application of mobile phone, smart phone is had become in people's daily life not
The communication that can lack and converter tools, scientific and technological progress is so that the function of mobile phone is stronger and stronger, but handset and screen
Very easy to be damaged, because of the invention mobile phone protective cover, that is, our mobile phone shells for being commonly called as, mobile phone shell can protect mobile phone
It is not scratched, tumble injury, abrasion, the mobile phone shell of insulation can also play the role of abatement magnetic interference, enhance mobile phone signal.Mobile phone shell
An independent industry is gradually formed.
The shelling machine of most of mobile phone is all using the non-metallic material that can be penetrated by less radio-frequency currently on the market
Material, such as: plastics, glass, ceramics etc., however, metal is all from ancient times to the present the favorite appearance material of the mankind, because of beautiful appearance
Effect is increasingly designed on the shell of mobile phone, in order to meet metallic mobile phone shell water-proof function demand, city at present
The shelling machine of most of mobile phone is all to prevent junction from seeping water using the scheme of marine glue or sealing ring on field, such as metal
+ marine glue+metal or plastics come waterproof or metal+sealing ring+metal or plastics carry out waterproof.However, using marine glue at present
Or the waterproof project of sealing ring can not play ideal waterproof effect.Thus, current metal hand casing still has much room for improvement.
Mobile phone shell available on the market mainly has: silica type mobile phone shell, thermoplastic polyurethane elastomer class mobile phone shell, poly- carbon
7 kinds of esters of gallic acid mobile phone shell, PP type mobile phone shell, leather-like mobile phone shell, special substance class mobile phone shell, metal class mobile phone shell etc..
Although mobile phone shell especially silica type mobile phone shell drop resistant performance is good but it is less useful for radiating, is easy to cause showing for fuselage overheat
As especially severe may set off an explosion.Experiment also turns out that sheath body, mainboard not can be used 3 years or more with Mobile phone, and
Wear sheath body then most 2 years.Mobile phone shell will affect mobile phone heat dissipation not only to reduce mobile phone service life, but also can release first
The pernicious gases such as aldehyde and benzene, do harm to huamn body.Therefore it also needs to study it, developing perfect heat-dissipating again can shatter-resistant
And the mobile phone shell of the safety and environmental protection wear-resisting, corrosion resistance is good.
Summary of the invention
In consideration of it, the object of the present invention is to provide a kind of preparation method of resin based carbon fiber composite material mobile phone shell, solution
The problems such as certainly existing mobile phone shell wear resistence is poor, thermal diffusivity and corrosion resistance are poor.
To achieve the goals above, the technical scheme adopted by the invention is that: a kind of resin based carbon fiber composite material hand
The preparation method of casing, it is characterised in that method includes the following steps:
Step 1: it is mixed resin and boron nitride powder and graphene to obtain resin compound, wherein boron nitride powder
Mesh number is 800 mesh hereinafter, in mixture, and it is 0.5wt%-5wt% that boron nitride powder, which accounts for weight percent, and graphene additional amount is
0.2wt%-3wt%, surplus are resin.
Step 2: using carbon fiber sheet as main material, resin compound configured in step 1 is molten added with machine
Agent configures resin solution as maceration extract, carbon fiber sheet is immersed in resin solution, dip time 1h-4h, takes out Carbon fiber
Wei Bu hangs 1h-10h, so that Carbon fibe impregnated cloth is in leather hard.
Step 3: Carbon fibe impregnated cloth laying 2-10 in step 2 is placed in the mold of mobile phone shell model, mold table
Face is brushed with release agent, and compacting, curing molding on press make resin based carbon fiber composite material mobile phone shell blank.
Step 4: the resin based carbon fiber composite material mobile phone shell blank green body prepared in step 3 is integrally immersed into resin
Impregnation, dip time 1h-5h are carried out in solution.
Step 5: green body in step 4 is subjected to curing process, solidification temperature is 120 DEG C -180 DEG C.
Step 6: the green body after curing process in step 5 is machined according to mobile phone shell size, and by flash
It polishes smooth, resin based carbon fiber composite material mobile phone shell is made.
A kind of preparation method of above-mentioned resin based carbon fiber composite material mobile phone shell, which is characterized in that institute in step 1
The resin stated is one of phenolic resin, epoxy resin or furane resins.
A kind of preparation method of above-mentioned resin based carbon fiber composite material mobile phone shell, which is characterized in that institute in step 2
The carbon fiber sheet stated is PAN-based carbon fiber cloth, rayon-based carbon fiber cloth or pitch based carbon fiber cloth, and specification is flat for 1K or 3K
Line charcoal cloth either one of 1K or 3K twill charcoal cloth, organic solvent are alcohol or acetone, wherein resin compound with have
Solvent mixed weight ratio is 1:0.5-5.0.
A kind of preparation method of above-mentioned resin based carbon fiber composite material mobile phone shell, which is characterized in that institute in step 3
It is 5Mpa-30Mpa that the mold stated, which applies pressure size, and solidification temperature is 120 DEG C -180 DEG C, and solidification heating rate is 3 DEG C/h-15
DEG C/h, solidification soaking time is 2h-10h.
A kind of preparation method of above-mentioned resin based carbon fiber composite material mobile phone shell, which is characterized in that institute in step 4
Resin solution of the resin solution stated with step 2.
A kind of preparation method of above-mentioned resin based carbon fiber composite material mobile phone shell, which is characterized in that institute in step 5
The solidification heating rate stated is 3 DEG C/h-15 DEG C/h, and solidification soaking time is 2h-10h.
Compared with the prior art, the present invention has the following advantages:
1, (modulus is in 310GPa or more), low close using Carbon fibe high-intensitive (intensity reaches 3.5GPa), high-modulus by the present invention
Spend (1.5-2.0g/cm3), anti-oxidant (400 DEG C or more start to aoxidize in air) and it is corrosion-resistant the advantages that；Boron nitride it is resistance to
Grind (Mohs' hardness are as follows: 1-2), good thermal shock (oxidation resistance temperature is up to 1000 DEG C in air), high (the diamond-like knot of intensity
Structure), thermal expansion coefficient it is small (average linear expansion coefficient be 4.92 × 10-6K-1) the features such as；High thermal conductivity (the mono-layer graphite of graphene
The thermal coefficient of alkene is up to 5300W/mK), high-intensitive (average modulus is up to 0.25TPa) the advantages that.The resin base Carbon fiber of preparation
Composite material mobile phone shell is tieed up, has many advantages, such as that light-weight, wearability is good, high mechanical strength, corrosion-resistant, heat transfer is fast.
Detailed description of the invention
Fig. 1 is the process flow diagram that the present invention prepares resin based carbon fiber composite material mobile phone shell.
Specific embodiment
Embodiment 1
Step 1: resin and boron nitride powder and graphene are mixed, resin is phenolic resin, wherein boron nitride powder
Mesh number is 850 mesh, and in mixture, it is 0.5wt% that boron nitride powder, which accounts for weight percent, and graphene additional amount is 0.2wt%, surplus
For resin.
Step 2: using 1K plain weave PAN-based carbon fiber cloth as main material, resin in step 1 is molten added with machine
Agent configures resin solution as maceration extract, and organic solvent is alcohol, and wherein resin compound is with organic solvent mixed weight ratio
Carbon fiber sheet is immersed in resin solution by 1:0.5, dip time 1h, is taken out carbon fiber sheet and is hung 1h, so that Carbon fibe soaks
Stain cloth is in leather hard.
Step 3: Carbon fibe impregnated cloth laying 2 in step 2 is placed in the mold of mobile phone shell model, die surface brush
There is release agent, compacting, curing molding on press, it is 5Mpa that mold, which applies pressure size, and solidification temperature is 120 DEG C, and solidification rises
Warm rate is 3 DEG C/h, and solidification soaking time is 2h, makes resin based carbon fiber composite material mobile phone shell blank.
Step 4: the resin based carbon fiber composite material mobile phone shell green body prepared in step 3 is integrally immersed into resin solution
Middle carry out impregnation, the same step 2 of resin solution, dip time 1h.
Step 5: by step 4 green body carry out curing process, solidification temperature be 120 DEG C, solidification heating rate be 3 DEG C/
H, solidification soaking time are 2h.
Step 6: the green body prepared in step 5 is machined according to mobile phone shell size, and flash is polished light
It is sliding, resin based carbon fiber composite material mobile phone shell is made.
It is 1.55g/cm that resin based carbon fiber composite material mobile phone shell density, which is made,3, compression strength 1100MPa, vertically
Machine direction thermal coefficient is 120W/mK.
Embodiment 2
Step 1: resin and boron nitride powder and graphene are mixed, resin is epoxy resin, wherein boron nitride powder
Mesh number is 900 mesh, and in mixture, it is 2.5wt% that boron nitride powder, which accounts for weight percent, and graphene additional amount is 1.5wt%, surplus
For resin.
Step 2: using 3K plain weave rayon-based carbon fiber cloth as main material, by resin in step 1 added with solvent
Resin solution is configured as maceration extract, organic solvent is alcohol, and wherein resin compound and organic solvent mixed weight ratio are 1:
2.5, carbon fiber sheet is immersed in resin solution, dip time 2h, takes out carbon fiber sheet and hang 5h, so that Carbon fibe impregnates
Cloth is in leather hard.
Step 3: Carbon fibe impregnated cloth laying 5 in step 2 is placed in the mold of mobile phone shell model, die surface brush
There is release agent, compacting, curing molding on press, it is 15Mpa that mold, which applies pressure size, and solidification temperature is 150 DEG C, and solidification rises
Warm rate is 8 DEG C/h, and solidification soaking time is 6h, makes resin based carbon fiber composite material mobile phone shell blank.
Step 4: the resin based carbon fiber composite material mobile phone shell green body prepared in step 3 is integrally immersed into resin solution
Middle carry out impregnation, the same step 2 of resin solution, dip time 3h.
Step 5: by step 4 green body carry out curing process, solidification temperature be 150 DEG C, solidification heating rate be 8 DEG C/
H, solidification soaking time are 6h.
Step 6: the green body prepared in step 5 is machined according to mobile phone shell size, and flash is polished light
It is sliding, resin based carbon fiber composite material mobile phone shell is made.
It is 1.58g/cm that resin based carbon fiber composite material mobile phone shell density, which is made,3, compression strength 1117MPa, vertically
Machine direction thermal coefficient is 128W/mK.
Embodiment 3
Step 1: resin and boron nitride powder and graphene are mixed, resin is furane resins, wherein boron nitride powder
Mesh number is 1000 mesh, and in mixture, it is 5wt% that boron nitride powder, which accounts for weight percent, and graphene additional amount is 3wt%, and surplus is
Resin.
Step 2: using 3K twill pitch based carbon fiber cloth as main material, by resin in step 1 added with solvent
Resin solution is configured as maceration extract, organic solvent is acetone, and wherein resin compound and organic solvent mixed weight ratio are 1:
5, carbon fiber sheet is immersed in resin solution, dip time 4h, takes out carbon fiber sheet and hang 10h, so that Carbon fibe impregnates
Cloth is in leather hard.
Step 3: Carbon fibe impregnated cloth laying 10 in step 2 is placed in the mold of mobile phone shell model, die surface
Brushed with release agent, compacting, curing molding on press, it is 30Mpa that mold, which applies pressure size, and solidification temperature is 180 DEG C, solidification
Heating rate is 15 DEG C/h, and solidification soaking time is 10h, makes resin based carbon fiber composite material mobile phone shell blank.
Step 4: the resin based carbon fiber composite material mobile phone shell green body prepared in step 3 is integrally immersed into resin solution
Middle carry out impregnation, the same step 2 of resin solution, dip time 5h.
Step 5: by step 4 green body carry out curing process, solidification temperature be 180 DEG C, solidification heating rate be 15 DEG C/
H, solidification soaking time are 10h.
Step 6: the green body prepared in step 5 is machined according to mobile phone shell size, and flash is polished light
It is sliding, resin based carbon fiber composite material mobile phone shell is made.
It is 1.62g/cm that resin based carbon fiber composite material mobile phone shell density, which is made,3, compression strength 1135MPa, vertically
Machine direction thermal coefficient is 134W/mK.
The above is only presently preferred embodiments of the present invention, is not intended to limit the invention in any way, it is all according to the present invention
Technical spirit any simple modification, change and equivalent structure transformation to the above embodiments, still fall within skill of the present invention
In the protection scope of art scheme.
Claims (6)
1. a kind of preparation method of resin based carbon fiber composite material mobile phone shell, it is characterised in that method includes the following steps:
Step 1: it is mixed resin and boron nitride powder and graphene to obtain resin compound, wherein boron nitride powder mesh number
For 800 mesh hereinafter, in mixture, it is 0.5wt%-5wt% that boron nitride powder, which accounts for weight percent, and graphene additional amount is
0.2wt%-3wt%, surplus are resin；
Step 2: using carbon fiber sheet as main material, resin compound configured in step 1 is matched added with solvent
Resin solution is set as maceration extract, carbon fiber sheet is immersed in resin solution, dip time 1h-4h takes out carbon fiber sheet
1h-10h is hung, so that Carbon fibe impregnated cloth is in leather hard；
Step 3: Carbon fibe impregnated cloth laying 2-10 in step 2 is placed in the mold of mobile phone shell model, die surface brush
There is release agent, compacting, curing molding on press make resin based carbon fiber composite material mobile phone shell blank；
Step 4: the resin based carbon fiber composite material mobile phone shell blank green body prepared in step 3 is integrally immersed into resin solution
Middle carry out impregnation, dip time 1h-5h；
Step 5: green body in step 4 is subjected to curing process, solidification temperature is 120 DEG C -180 DEG C；
Step 6: the green body after curing process in step 5 is machined according to mobile phone shell size, and flash is polished
It is smooth, resin based carbon fiber composite material mobile phone shell is made.
2. a kind of preparation method of resin based carbon fiber composite material mobile phone shell as described in claim 1, which is characterized in that step
Resin described in rapid one is one of phenolic resin, epoxy resin or furane resins.
3. a kind of preparation method of resin based carbon fiber composite material mobile phone shell as described in claim 1, which is characterized in that step
Carbon fiber sheet described in rapid two is that PAN-based carbon fiber cloth, rayon-based carbon fiber cloth or pitch based carbon fiber cloth, specification are
One of 1K or 3K plain weave charcoal cloth either 1K or 3K twill charcoal cloth, organic solvent are alcohol or acetone, and wherein resin is mixed
It closes object and organic solvent mixed weight ratio is 1:0.5-5.0.
4. a kind of preparation method of resin based carbon fiber composite material mobile phone shell as described in claim 1, which is characterized in that step
It is 5Mpa-30Mpa that mold described in rapid three, which applies pressure size, and solidification temperature is 120 DEG C -180 DEG C, and solidification heating rate is
3 DEG C/h-15 DEG C/h, solidification soaking time is 2h-10h.
5. a kind of preparation method of resin based carbon fiber composite material mobile phone shell as described in claim 1, which is characterized in that step
Resin solution of the resin solution described in rapid four with step 2.
6. a kind of preparation method of resin based carbon fiber composite material mobile phone shell as described in claim 1, which is characterized in that step
Solidification heating rate described in rapid five is 3 DEG C/h-15 DEG C/h, and solidification soaking time is 2h-10h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910342030.3A CN110128778A (en) | 2019-04-26 | 2019-04-26 | A kind of preparation method of resin based carbon fiber composite material mobile phone shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910342030.3A CN110128778A (en) | 2019-04-26 | 2019-04-26 | A kind of preparation method of resin based carbon fiber composite material mobile phone shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110128778A true CN110128778A (en) | 2019-08-16 |
Family
ID=67575141
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910342030.3A Pending CN110128778A (en) | 2019-04-26 | 2019-04-26 | A kind of preparation method of resin based carbon fiber composite material mobile phone shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110128778A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111067223A (en) * | 2019-12-26 | 2020-04-28 | 深圳艾素科技有限公司 | Mobile phone signal enhancement sheet, preparation method thereof and mobile phone protective sleeve |
| CN111393848A (en) * | 2020-03-23 | 2020-07-10 | 惠州市源医科技有限公司 | Mobile phone shell material and mobile phone shell |
| CN111825948A (en) * | 2020-04-27 | 2020-10-27 | 东莞市维斯德新材料技术有限公司 | Method for preparing quartz fiber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106854342A (en) * | 2016-12-22 | 2017-06-16 | 芜湖天道绿色新材料有限公司 | Low halogen, fire-retardant epoxy resin carbon fiber composite and preparation method thereof |
| CN107760007A (en) * | 2017-10-09 | 2018-03-06 | 武汉马腾科技发展有限公司 | A kind of mobile phone shell radiating plastics and preparation method thereof |
| CN109637850A (en) * | 2018-12-30 | 2019-04-16 | 兴化市精密铸锻造产业研究院有限公司 | A kind of preparation method of carbon fiber composite electrical contact |
-
2019
- 2019-04-26 CN CN201910342030.3A patent/CN110128778A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106854342A (en) * | 2016-12-22 | 2017-06-16 | 芜湖天道绿色新材料有限公司 | Low halogen, fire-retardant epoxy resin carbon fiber composite and preparation method thereof |
| CN107760007A (en) * | 2017-10-09 | 2018-03-06 | 武汉马腾科技发展有限公司 | A kind of mobile phone shell radiating plastics and preparation method thereof |
| CN109637850A (en) * | 2018-12-30 | 2019-04-16 | 兴化市精密铸锻造产业研究院有限公司 | A kind of preparation method of carbon fiber composite electrical contact |
Non-Patent Citations (1)
| Title |
|---|
| 吴世敏等: "《简明精细化工大辞典》", 30 June 1999 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111067223A (en) * | 2019-12-26 | 2020-04-28 | 深圳艾素科技有限公司 | Mobile phone signal enhancement sheet, preparation method thereof and mobile phone protective sleeve |
| CN111393848A (en) * | 2020-03-23 | 2020-07-10 | 惠州市源医科技有限公司 | Mobile phone shell material and mobile phone shell |
| CN111825948A (en) * | 2020-04-27 | 2020-10-27 | 东莞市维斯德新材料技术有限公司 | Method for preparing quartz fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110128778A (en) | A kind of preparation method of resin based carbon fiber composite material mobile phone shell | |
| CN101805493B (en) | High-temperature resistance carbon fiber/epoxy resin composite material, preparation method and use | |
| US3873168A (en) | Laminated composite article with improved bearing portion | |
| CN105086345B (en) | A kind of screw shaft of ship sealing lubrication static ring material and preparation method thereof | |
| CN101851393B (en) | Floating body material and manufacturing technique thereof | |
| CN106240087B (en) | A kind of metal-base composites and preparation method thereof | |
| CN107127907B (en) | A kind of preparation process of ultra-thin Carbon fibe paper | |
| CN105922525B (en) | The production method and Mobile phone screen obtained or shell of high rigidity plastic cement Mobile phone screen or shell | |
| CN106313584A (en) | Forming device and forming method for tubular three-dimensional braided composite product | |
| CN102582146A (en) | Composite material with magnesium alloy as base body and manufacturing method thereof | |
| CN109737160B (en) | Modified phenolic resin-based brake pad friction material and preparation method thereof | |
| CN103121319A (en) | Manufacturing method of computer outer shell | |
| CN109931350B (en) | Copper-free graphene ceramic brake pad composite material, brake pad, preparation method and application thereof | |
| CN105150508A (en) | Process method for preparing static ring used for ship tail shaft sealing and lubricating | |
| CN109988410A (en) | A kind of fiber prepreg material and its preparation method and application | |
| CN107964217B (en) | Carbon fiber reinforced composite resin matrix, carbon fiber reinforced composite and preparation method thereof, and table tennis bat bottom plate | |
| CN109849361A (en) | A kind of automobile polypropylene nitrile carbon fiber/phenolic resin bonnet preparation method | |
| CN109605779A (en) | A kind of preparation method of automobile carbon fiber composite seat | |
| CN109334041A (en) | A kind of ship shaft stationary seal ring material and preparation method thereof | |
| CN109703059A (en) | A kind of preparation method of video display institute carbon fiber composite seat frame | |
| KR102131564B1 (en) | sleeve and method of manufacturing the same | |
| CN109676962A (en) | A kind of preparation method of high-speed rail carbon fiber composite seat | |
| CN109896866B (en) | Woven fiber composite board based on nano ceramic material and preparation method thereof | |
| CN114015192A (en) | Method for preparing composite friction material by using carbon fiber fishing rod waste material | |
| CN109795133A (en) | A kind of automobile polypropylene nitrile Carbon fibe/epoxy resin chair framework preparation method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190816 |
|
| RJ01 | Rejection of invention patent application after publication |