CN109575577A - A kind of wood imitation structure water lubricating bearing material - Google Patents
A kind of wood imitation structure water lubricating bearing material Download PDFInfo
- Publication number
- CN109575577A CN109575577A CN201811510538.1A CN201811510538A CN109575577A CN 109575577 A CN109575577 A CN 109575577A CN 201811510538 A CN201811510538 A CN 201811510538A CN 109575577 A CN109575577 A CN 109575577A
- Authority
- CN
- China
- Prior art keywords
- wood
- parts
- bearing material
- lubricating bearing
- structure water
- 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
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- 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
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
-
- 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
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
Abstract
The present invention provides a kind of wood imitation structure water lubricating bearing material, belongs to technical field of polymer materials.The wood imitation structure water lubricating bearing material, in parts by weight, comprising: 50-70 parts of polyurethane wood-imitation material, 50-70 parts of rubber, 10-15 parts of fiber enhancer, 10-15 parts of lubricant, 3-6 parts of vulcanizing agent, 1-4 parts of promotor；The rubber is the mixture that polyurethane rubber and nitrile rubber are 1:1 according to mass ratio.Bearing material of the invention has more excellent mechanical property and wearability on the basis of meeting original excellent properties.
Description
Technical field
The invention belongs to technical field of polymer materials, and in particular to a kind of wood imitation structure water lubricating bearing material.
Background technique
Water lubriucated bearing is widely used support accessory in machine, and miscellaneous sliding bearing is of wide application,
Modern rotating requires bearing to have good bearing capacity, long-life and high reliability.Water lubriucated bearing is by outer metal sleeve
(steel or copper) and internal layer bushing composition, in bearing lining material, the country was once used to or was still used at present production water
The material of lubrication bearing has lignumvitae, fabroil, rubber, plastics, ceramics, graphite product, metal, alloy and metallo-plastic
Deng.
Polyurethane wood-imitation material has the characteristics that high intensity, resistance to acid and alkali and anti-corrosive properties are excellent, more and more answers
Used in packaging, house beam, indoor outer wall engraved ornamental etc., but since its polyurethane wood-imitation material mechanical strength is more weaker, also
The report in terms of water lubriucated bearing is not applied.
Summary of the invention
The object of the present invention is to provide a kind of wood imitation structure water lubricating bearing material, which has excellent mechanical property
And wearability.
The present invention provides a kind of wood imitation structure water lubricating bearing material, in parts by weight, comprising:
50-70 parts of polyurethane wood-imitation material, 50-70 parts of rubber, 10-15 parts of fiber enhancer, 10-15 parts of lubricant, sulphur
3-6 parts of agent, 1-4 parts of promotor；
The rubber is the mixture that polyurethane rubber and nitrile rubber are 1:1 according to mass ratio；
The preparation method of the polyurethane wood-imitation material, comprising:
Step 1: by polytetrahydrofuran dihydric alcohol and 2,4- toluene di-isocyanate(TDI) reacts 3-5h at 90-95 DEG C, obtains
First prepolymer；
Step 2: 2,2- dihydromethyl propionic acids are added in above-mentioned first prepolymer at 70-90 DEG C, are reacted 2-3 hours, are obtained
To the second prepolymer；
Step 3: stannous octoate is added in above-mentioned second prepolymer at 70-90 DEG C, reacts 2-3 hours, obtains poly- ammonia
Ester prepolymer；
Step 4: the polyurethane prepolymer of step 3 and nano-cellulose are mixed, polyurethane wood-imitation material is obtained.
Preferably, the number-average molecular weight of the polytetrahydrofuran dihydric alcohol is 2000-3000 dalton.
Preferably, the high-speed stirred revolving speed of the step three is 1500-2000 revs/min, and mixing time is 10-20 points
Clock.
Preferably, the polytetrahydrofuran dihydric alcohol, 2,4- toluene di-isocyanate(TDI), 2,2- dihydromethyl propionic acid,
The mass ratio of stannous octoate and nano-cellulose is (30-40): (10-20): (2-5): (1-3): (1-5).
Preferably, the fiber enhancer is the one or two of glass fibre or carbon fiber.
Preferably, the mass ratio of the glass fibre and glass fibre is 3:7.
Preferably, the lubricant is the mixture of polytetrafluoroethylene (PTFE) and graphite.
Preferably, the mass ratio of the polytetrafluoroethylene (PTFE) and graphite is 5:2.
Preferably, the vulcanizing agent is cumyl peroxide.
Preferably, the promotor is iso-cyanuric acid triallyl ester.
Beneficial effects of the present invention
The present invention provides a kind of wood imitation structure water lubricating bearing material, in parts by weight, comprising: polyurethane imitation timber
50-70 parts of material, 50-70 parts of rubber, 10-15 parts of fiber enhancer, 10-15 parts of lubricant, 3-6 parts of vulcanizing agent, promotor 1-4
Part；Polyurethane wood-imitation material of the invention has the characteristics that intensity is high, Good Heat-resistance, at the same with polyurethane rubber and butyronitrile
Rubber compounding uses, and plays the effect of synergistic effect, and the bearing material made is on the basis of meeting original excellent properties, tool
There are more excellent mechanical property and wearability.
Specific embodiment
The present invention provides a kind of wood imitation structure water lubricating bearing material, in parts by weight, comprising:
50-70 parts of polyurethane wood-imitation material, 50-70 parts of rubber, 10-15 parts of fiber enhancer, 10-15 parts of lubricant, sulphur
3-6 parts of agent, 1-4 parts of promotor；Preferably 60 parts of polyurethane wood-imitation material, 60 parts of rubber, 12 parts of fiber enhancer, lubricant
12 parts, 4 parts of vulcanizing agent, 2 parts of promotor；
According to the present invention, the rubber is the mixture that polyurethane rubber and nitrile rubber are 1:1 according to mass ratio；By
It is mixed in rubber using polyurethane rubber and nitrile rubber, plays synergistic effect with polyurethane wood-imitation material.
According to the present invention, the preparation method of the polyurethane wood-imitation material, comprising:
Step 1: by polytetrahydrofuran dihydric alcohol and 2,4- toluene di-isocyanate(TDI) reacts 3-5h at 90-95 DEG C, obtains
First prepolymer；The number-average molecular weight of the polytetrahydrofuran dihydric alcohol is preferably 2000-3000 dalton；
Step 2: 2,2- dihydromethyl propionic acids are added in above-mentioned first prepolymer at 70-90 DEG C, are reacted 2-3 hours, are obtained
To the second prepolymer；
Step 3: stannous octoate is added in above-mentioned second prepolymer at 70-90 DEG C, reacts 2-3 hours, obtains poly- ammonia
Ester prepolymer；
Step 4: the polyurethane prepolymer of step 3 and nano-cellulose are mixed, polyurethane wood-imitation material is obtained.
The high-speed stirred revolving speed of the step three is preferably 1500-2000 revs/min, and mixing time is preferably 10-20 minutes.
According to the present invention, the polytetrahydrofuran dihydric alcohol, 2,4- toluene di-isocyanate(TDI), 2,2- dihydroxymethyl third
The mass ratio of acid, stannous octoate and nano-cellulose is (30-40): (10-20): (2-5): (1-3): (1-5), more preferably
35:15:3:2:3.
According to the present invention, the fiber enhancer is the one or two of glass fibre or carbon fiber.The glass
The mass ratio of fiber and glass fibre is preferably 3:7.
According to the present invention, the lubricant is the mixture of polytetrafluoroethylene (PTFE) and graphite；The polytetrafluoroethylene (PTFE) and
The mass ratio of graphite is preferably 5:2.
According to the present invention, the vulcanizing agent is cumyl peroxide, and promotor is iso-cyanuric acid triallyl ester.
A kind of preparation method of wood imitation structure water lubricating bearing material of the present invention, comprising:
1) polyurethane wood-imitation material, rubber, fiber enhancer, mix lubricant is uniform, obtain mixture；
2) promotor and vulcanizer are added in said mixture, are then placed in mold, vulcanized, the vulcanization
Temperature is 160-180 DEG C, sulfide stress 30-40MPa, vulcanization time 10-15min and obtains wood imitation structure water lubriucated bearing
Material.
The present invention will be further described in detail combined with specific embodiments below, and the raw material being related in embodiment is
It is commercially available.
The preparation of 1 polyurethane wood-imitation material of embodiment
Under nitrogen protection, by 35g polytetrahydrofuran diol (number-average molecular weight is 2500 dalton) and 15g2,4- toluene
Reaction unit is added in diisocyanate, after being warming up to 92 DEG C, polymerization 4 hours, obtains the first prepolymer；
By 3g2,2- dihydromethyl propionic acid is added at 90 DEG C in above-mentioned first prepolymer, is reacted 2.5 hours, is obtained second
Prepolymer；
2g stannous octoate is added at 80 DEG C in above-mentioned second prepolymer, reacts 2.5 hours, obtains polyurethane prepolymer
Object；
3g nano-cellulose and above-mentioned polyurethane prepolymer are mixed, revolving speed is 1800 revs/min, and mixing time is preferred
It is 15 minutes, obtains polyurethane wood-imitation material.
The preparation of 2 wood imitation structure water lubricating bearing material of embodiment
1) mixing of the polyurethane wood-imitation material, 60g polyurethane rubber and nitrile rubber that 60g embodiment 1 are prepared
(polyurethane rubber and nitrile rubber mass ratio are 1:1), (glass fibre and glass fibre are in mass ratio for 12g fiber enhancer to object
3:7 mixing), 12g lubricant (5:2 in mass ratio of polytetrafluoroethylene (PTFE) and graphite mixing) it is uniformly mixed, obtain mixture；
2) 2g iso-cyanuric acid triallyl ester and 4g cumyl peroxide are added in said mixture, are then put
It sets in a mold, vulcanization, the curing temperature, which is 170 DEG C, sulfide stress 35MPa, vulcanization time 12min, to be imitated
Timber structure water lubricating bearing material.
The preparation of 3 wood imitation structure water lubricating bearing material of embodiment
1) mixing of the polyurethane wood-imitation material, 50g polyurethane rubber and nitrile rubber that 50g embodiment 1 are prepared
(polyurethane rubber and nitrile rubber mass ratio are 1:1), (glass fibre and glass fibre are in mass ratio for 10g fiber enhancer to object
3:7 mixing), 10g lubricant (5:2 in mass ratio of polytetrafluoroethylene (PTFE) and graphite mixing) it is uniformly mixed, obtain mixture；
2) 1g iso-cyanuric acid triallyl ester and 3g cumyl peroxide are added in said mixture, are then put
It sets in a mold, vulcanization, the curing temperature, which is 160 DEG C, sulfide stress 30MPa, vulcanization time 15min, to be imitated
Timber structure water lubricating bearing material.
The preparation of 4 wood imitation structure water lubricating bearing material of embodiment
1) mixing of the polyurethane wood-imitation material, 70g polyurethane rubber and nitrile rubber that 70g embodiment 1 are prepared
(polyurethane rubber and nitrile rubber mass ratio are 1:1), (glass fibre and glass fibre are in mass ratio for 15g fiber enhancer to object
3:7 mixing), 15g lubricant (5:2 in mass ratio of polytetrafluoroethylene (PTFE) and graphite mixing) it is uniformly mixed, obtain mixture；
2) 4g iso-cyanuric acid triallyl ester and 6g cumyl peroxide are added in said mixture, are then put
It sets in a mold, vulcanization, the curing temperature, which is 180 DEG C, sulfide stress 40MPa, vulcanization time 10min, to be imitated
Timber structure water lubricating bearing material.
Comparative example 1
1) polyurethane wood-imitation material that 120g embodiment 1 is prepared, 12g fiber enhancer (glass fibre and glass
Fiber 3:7 in mass ratio mixing), 12g lubricant (5:2 in mass ratio of polytetrafluoroethylene (PTFE) and graphite mixing) it is uniformly mixed, obtain
To mixture；
2) 2g iso-cyanuric acid triallyl ester and 4g cumyl peroxide are added in said mixture, are then put
It sets in a mold, vulcanization, the curing temperature, which is 170 DEG C, sulfide stress 35MPa, vulcanization time 12min, to be imitated
Timber structure water lubricating bearing material.
Comparative example 2
1) polyurethane wood-imitation material that 60g embodiment 1 is prepared, 60g polyurethane rubber, 12g fiber enhancer (glass
Glass fiber and glass fibre 3:7 in mass ratio mixing), 12g lubricant (5:2 in mass ratio of polytetrafluoroethylene (PTFE) and graphite mixing)
It is uniformly mixed, obtains mixture；
2) 2g iso-cyanuric acid triallyl ester and 4g cumyl peroxide are added in said mixture, are then put
It sets in a mold, vulcanization, the curing temperature, which is 170 DEG C, sulfide stress 35MPa, vulcanization time 12min, to be imitated
Timber structure water lubricating bearing material.
Comparative example 3
1) polyurethane wood-imitation material that 60g embodiment 1 is prepared, 60g nitrile rubber, 12g fiber enhancer (glass
Fiber and glass fibre 3:7 in mass ratio mixing), 12g lubricant (5:2 in mass ratio of polytetrafluoroethylene (PTFE) and graphite mixing) mix
It closes uniformly, obtains mixture；
2) 2g iso-cyanuric acid triallyl ester and 4g cumyl peroxide are added in said mixture, are then put
It sets in a mold, vulcanization, the curing temperature, which is 170 DEG C, sulfide stress 35MPa, vulcanization time 12min, to be imitated
Timber structure water lubricating bearing material.
Embodiment 2-4 and comparative example 1-3 are obtained water lubricating bearing material to be tested for the property, the results are shown in Table 1:
Table 1
Claims (10)
1. a kind of wood imitation structure water lubricating bearing material, which is characterized in that in parts by weight, comprising:
50-70 parts of polyurethane wood-imitation material, 50-70 parts of rubber, 10-15 parts of fiber enhancer, 10-15 parts of lubricant, vulcanizing agent
3-6 parts, 1-4 parts of promotor；
The rubber is the mixture that polyurethane rubber and nitrile rubber are 1:1 according to mass ratio；
The preparation method of the polyurethane wood-imitation material, comprising:
Step 1: by polytetrahydrofuran dihydric alcohol and 2,4- toluene di-isocyanate(TDI) reacts 3-5h at 90-95 DEG C, obtains first
Prepolymer；
Step 2: 2,2- dihydromethyl propionic acids are added in above-mentioned first prepolymer at 70-90 DEG C, are reacted 2-3 hours, obtain the
Two prepolymers；
Step 3: stannous octoate is added in above-mentioned second prepolymer at 70-90 DEG C, reacts 2-3 hours, it is pre- to obtain polyurethane
Polymers；
Step 4: the polyurethane prepolymer of step 3 and nano-cellulose are mixed, polyurethane wood-imitation material is obtained.
2. a kind of wood imitation structure water lubricating bearing material according to claim 1, which is characterized in that the poly- tetrahydro furan
Mutter dihydric alcohol number-average molecular weight be 2000-3000 dalton.
3. a kind of wood imitation structure water lubricating bearing material according to claim 1, which is characterized in that the step three
High-speed stirred revolving speed is 1500-2000 revs/min, and mixing time is 10-20 minutes.
4. a kind of wood imitation structure water lubricating bearing material according to claim 1, which is characterized in that the poly- tetrahydro furan
The mass ratio of dihydric alcohol, 2,4 toluene diisocyanate, 2,2- dihydromethyl propionic acid, stannous octoate and nano-cellulose of muttering is
(30-40): (10-20): (2-5): (1-3): (1-5).
5. a kind of wood imitation structure water lubricating bearing material according to claim 1, which is characterized in that the fiber reinforcement
Agent is the one or two of glass fibre or carbon fiber.
6. a kind of wood imitation structure water lubricating bearing material according to claim 5, which is characterized in that the glass fibre
Mass ratio with glass fibre is 3:7.
7. a kind of wood imitation structure water lubricating bearing material according to claim 1, which is characterized in that the lubricant is
The mixture of polytetrafluoroethylene (PTFE) and graphite.
8. a kind of wood imitation structure water lubricating bearing material according to claim 7, which is characterized in that the polytetrafluoroethyl-ne
The mass ratio of alkene and graphite is 5:2.
9. a kind of wood imitation structure water lubricating bearing material according to claim 1, which is characterized in that the vulcanizing agent is
Cumyl peroxide.
10. a kind of wood imitation structure water lubricating bearing material according to claim 1, which is characterized in that the promotor
For iso-cyanuric acid triallyl ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811510538.1A CN109575577A (en) | 2018-12-11 | 2018-12-11 | A kind of wood imitation structure water lubricating bearing material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811510538.1A CN109575577A (en) | 2018-12-11 | 2018-12-11 | A kind of wood imitation structure water lubricating bearing material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109575577A true CN109575577A (en) | 2019-04-05 |
Family
ID=65928204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811510538.1A Pending CN109575577A (en) | 2018-12-11 | 2018-12-11 | A kind of wood imitation structure water lubricating bearing material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109575577A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521667A (en) * | 2020-11-06 | 2021-03-19 | 宁波柯林斯橡塑科技有限公司 | Composite rubber, high-wear-resistance sealing element composite material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013007006A (en) * | 2011-06-27 | 2013-01-10 | Nok Corp | Water-lubricated bearing material |
| CN103172823A (en) * | 2011-12-23 | 2013-06-26 | 中国科学院兰州化学物理研究所 | Method for preparing polyurethane composite material for water lubrication |
| CN103788623A (en) * | 2012-11-02 | 2014-05-14 | 中国科学院兰州化学物理研究所 | Water lubricated bearing with high bearing capacity and self lubricity |
| CN106674644A (en) * | 2016-11-24 | 2017-05-17 | 中国科学院长春应用化学研究所 | Super wear-resistant water-lubricated bearing composite material and preparation method thereof |
| CN107163215A (en) * | 2017-06-22 | 2017-09-15 | 广东元星工业新材料有限公司 | High rigidity self-lubricating polyurethane elastomer and preparation method thereof |
| CN108276762A (en) * | 2018-01-05 | 2018-07-13 | 武汉理工大学 | A kind of compound polyurethane material and preparation method for water lubriucated bearing |
-
2018
- 2018-12-11 CN CN201811510538.1A patent/CN109575577A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013007006A (en) * | 2011-06-27 | 2013-01-10 | Nok Corp | Water-lubricated bearing material |
| CN103172823A (en) * | 2011-12-23 | 2013-06-26 | 中国科学院兰州化学物理研究所 | Method for preparing polyurethane composite material for water lubrication |
| CN103788623A (en) * | 2012-11-02 | 2014-05-14 | 中国科学院兰州化学物理研究所 | Water lubricated bearing with high bearing capacity and self lubricity |
| CN106674644A (en) * | 2016-11-24 | 2017-05-17 | 中国科学院长春应用化学研究所 | Super wear-resistant water-lubricated bearing composite material and preparation method thereof |
| CN107163215A (en) * | 2017-06-22 | 2017-09-15 | 广东元星工业新材料有限公司 | High rigidity self-lubricating polyurethane elastomer and preparation method thereof |
| CN108276762A (en) * | 2018-01-05 | 2018-07-13 | 武汉理工大学 | A kind of compound polyurethane material and preparation method for water lubriucated bearing |
Non-Patent Citations (2)
| Title |
|---|
| 李方等: ""可用作水润滑轴承的聚氨酯复合材料的制备"", 《应用化学》 * |
| 鲍海阁等: ""新型聚氨酯材料及其在舰船中的应用"", 《应用化学》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112521667A (en) * | 2020-11-06 | 2021-03-19 | 宁波柯林斯橡塑科技有限公司 | Composite rubber, high-wear-resistance sealing element composite material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100463940C (en) | Bridge bearing gliding material and method for preparing the same | |
| EP0210733A2 (en) | An environmentally durable elastomer composition with excellent low temperature dynamic properties | |
| JP2012046745A (en) | Process for preparing reinforced and reactive thermoplastic composition, and the composition | |
| CN105924764A (en) | Method for manufacturing degradable plastic packaging bags | |
| PL240496B1 (en) | Polymer-bitumens modified with rubber waste, method of preparing polymer-bitumens and a modifying agent for bitumens | |
| CN109054340A (en) | A kind of high-performance TPU modified film and preparation method | |
| CN109575577A (en) | A kind of wood imitation structure water lubricating bearing material | |
| US2424885A (en) | Paraformaldehyde treatment of reaction products of diisocyanate with linear polyesters and linear polyester-amides and products resulting therefrom | |
| JPS61236855A (en) | Polyether imide resin composition | |
| CN110003638A (en) | A kind of calcium carbonate height filling Biodegradable film and preparation method thereof | |
| CN109535369B (en) | Preparation method of high-low temperature resistant mixing type polyurethane raw rubber | |
| CN111560131A (en) | Preparation method of low-temperature-resistant modified plastic | |
| Oprea | Preparation and characterization of the agar/polyurethane composites | |
| CN109021195B (en) | High-performance polyurethane elastomer for table tennis ball preparation and preparation method thereof | |
| CN113831682A (en) | Corrosion-resistant high polymer material and preparation method thereof | |
| CN114044882A (en) | Flexible curing agent and preparation method and application thereof | |
| CN111500054A (en) | Preparation method of waste cable sheath modified wood-like polyurethane | |
| JPS6319550B2 (en) | ||
| JPS61285256A (en) | Polyphenylene sulfide resin composition | |
| JP2003002991A (en) | Method for producing deterioration-resistant rubber or thermoplastic elastomer | |
| Ryabov et al. | Preparation of polymer composites on the base of polyurethanes and natural polysaccharides | |
| CN108752913A (en) | A kind of ionic thermoplastic polyurethane elastomer and preparation method thereof | |
| Zaimova et al. | Design of new elastomeric matrix composites: comparison of mechanical properties and determining viscoelastic parameters via continuous micro indentation | |
| CN109679162A (en) | A kind of water lubricating bearing material and preparation method thereof | |
| CN115872670B (en) | Organic artificial marble and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| CB02 | Change of applicant information |
Address after: Room 5-7, No. 5 Special Technical Platform, No. 5218 Longhu Road, Changchun High-tech North District, 130000 Jilin Province Applicant after: CHANGCHUN A&Z SCIENCE CO., LTD. Address before: No. 5218 Longhu Road, North High-tech Zone, Changchun City, Jilin Province, 130000 Applicant before: CHANGCHUN A&Z SCIENCE CO., LTD. |
|
| CB02 | Change of applicant information | ||
| 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: 20190405 |
|
| RJ01 | Rejection of invention patent application after publication |