CN107283588A - A kind of preparation method of anti-aging sleeper composite - Google Patents
A kind of preparation method of anti-aging sleeper composite Download PDFInfo
- Publication number
- CN107283588A CN107283588A CN201710528005.5A CN201710528005A CN107283588A CN 107283588 A CN107283588 A CN 107283588A CN 201710528005 A CN201710528005 A CN 201710528005A CN 107283588 A CN107283588 A CN 107283588A
- Authority
- CN
- China
- Prior art keywords
- aging
- sleeper
- preparation
- composite
- stirring
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N1/00—Pretreatment of moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/08—Moulding or pressing
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
- D21C5/00—Other processes for obtaining cellulose, e.g. cooking cotton linters ; Processes characterised by the choice of cellulose-containing starting materials
- D21C5/005—Treatment of cellulose-containing material with microorganisms or enzymes
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
- E01B3/44—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from other materials only if the material is essential
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention belongs to rail material technical field, and in particular to a kind of preparation method of anti-aging sleeper composite.The present invention is by bentonite, mica and titanium dioxide carry out mixing and ball milling, and in scattered and modification liquid, pass through high-speed stirred, make the wood fibre cell interior of its uniform wadding warp enzymolysis processing, form sufficiently inflation in wood fibre cell interior and fill, so as to realize the effect of physical shielding ultraviolet light, effectively the penetrance of reduction ultraviolet light in wood, improves ageing resistace of the wooden material under ultraviolet light environments；Simultaneously by carrying out hot-pressing processing to wooden material, due to high temperature and enzymolysis processing, it is fully hydrolyzed the fiber of Timber residuals, simultaneously because internal fiber element cell filling filler, effectively reduce thickness swelling rate, the unnecessary internal stress of material internal is released, so that the ageing-resistant performance of sleeper composite significantly strengthens.
Description
Technical field
The invention belongs to rail material technical field, and in particular to a kind of preparation method of anti-aging sleeper composite.
Background technology
Fast development and the development need of new material due to global economy, the research of sleeper has no longer been only
Rest on traditional sleeper and armored concrete pillow is upper, more and more new technologies, advanced composite material (ACM) continuously emerge, and this it
In, composite wooden material is increasingly received by people, and environment is more and more wide in range in one's power for applied field, and what is come one after another is new
Challenge.And the research in the last few years for composite wooden material is also more and more, and due to the influence of outside climatic condition, aging
Performance is a very important test for composite wooden material performance, essentially consists in this use that often decide the material
Life-span.This also just promotes more scientific workers research further to composite wooden material ageing-resistant performance, while plus
The fast paces of research.Accelerated aging tests become important research direction, according to composite wooden material by Various Seasonal gas
Wait the change of influence, include high/low temperature change, intermittent drizzles in the rainy season day, thunderstorm and the natural situation such as snow, it is possible to use frost, soak,
The condition such as dry, steam-injection and ultraviolet irradiation carries out simulated experiment.Analyze natural weathering under the conditions of and accelerated ageing conditions
Under result, the rule changed therewith for composite wooden material property indices studied, and under different condition it is right
The influence of composite wooden material performance.
Due to the critical shortage of China's timber resources, a kind of sleeper composite is developed to replace timber imperative, and
Timber residuals are due to abundance, the problem of on the one hand alleviating domestic timber resource shortage, improve the actual profit of timber
With rate, on the other hand become and give up to greatest extent to use the waste resource not being fully used, new rail is made
Composite is rested the head on, while can reach or higher than every technical performance index of traditional sleeper and reinforced concrete sleeper.It is resistance to
Ageing properties as Novel sleeper composite an important Performance Evaluating Indexes, undoubtedly with important Research Significance,
There is directive function for the production of Novel sleeper composite, the also scientific development to Timber residuals material has promotion
Effect.Therefore, the aging research of Novel sleeper composite is significant.
The content of the invention
Present invention mainly solves technical problem：It is relatively low for existing sleeper composite ageing resistace, it is impossible to meet
The problem of demand of existing sleeper material, there is provided a kind of preparation method of anti-aging sleeper composite.
In order to solve the above-mentioned technical problem, the technical solution adopted in the present invention is：
（1）Count by weight, 45~50 parts of bentonites, 35~40 parts of mica powders and 10~15 parts of titanium white spheres of powder are weighed respectively
Grind, sieve to obtain mixing and ball milling powder；
（2）In mass ratio 1:10, mixing and ball milling powder is mixed with the stirring of the aluminum sulfate solution of mass fraction 5%, in ultrasonic disperse,
Obtain dispersion liquid, in mass ratio 1:1, by mao bamboon and cotton wood co-grinding, composite fibre of sieving to obtain；
（3）In mass ratio 1:10, composite fibre is mixed with deionized water, dispersed with stirring obtains fiber mixed liquor, by volume 1:
20, hydrogen peroxide is added dropwise in fiber mixed liquor, stirring mixes to obtain modification liquid, then zytase is added in modification liquid, enzyme
Solution, which is handled, must digest mixed liquor；
（4）By volume 1:1, dispersion liquid mix with enzymolysis mixed liquor, stirs and dissociates to obtain dissociation solution, by volume 1:1, it will solve
Chaotropic is mixed with styrene-butadiene emulsion, after 3~5h of stirring, and still aging 1~2h filters to obtain filter cake, is washed, is dried, obtains dry modification
Wood fibre；
（5）In mass ratio 1:5, modified wood fibre will be dried and be dipped in phenolic resin 2130, filter residue is filtered to obtain after immersion, is done
Dry to be placed in mould, hot-pressing processing stands cold pressing treatment after solidification, continues to stand 6~8h, you can be prepared into a kind of anti-aging
Sleeper composite.
Step（3）Described hydrogen peroxide is the hydrogen peroxide of mass fraction 5%.
Step（3）Described zytase addition is 20U/g.
Step（3）Described enzymolysis processing condition is that 25~30min of heating water bath, is then added dropwise quality at 50~55 DEG C
The sodium hydroxide solution of fraction 5% is 8.0 to pH, and stirring mixes 2~3h.
Step（4）Described styrene-butadiene emulsion is the styrene-butadiene emulsion that combinated styrene content amount is 35~45%.
Step（5）Described autoclaving conditions are, the hot-pressing processing at 1~5MPa, 75~80 DEG C.
Step（5）Described cold pressing treatment condition is, under 5~8MPa, is cold-pressed 3~5h.
The beneficial effects of the invention are as follows：
（1）The present invention is passed through at a high speed by being carried out to bentonite, mica and titanium dioxide in mixing and ball milling, and scattered and modification liquid
Stirring, makes the wood fibre cell interior of its uniform wadding warp enzymolysis processing, is formed and sufficiently filled in wood fibre cell interior
Swollen and filling, so as to realize the effect of physical shielding ultraviolet light, effectively reduces the penetrance of ultraviolet light in wood, improves timber
Ageing resistace of the material under ultraviolet light environments；
（2）The present invention, due to high temperature and enzymolysis processing, makes the fiber of Timber residuals by carrying out hot-pressing processing to wooden material
It is fully hydrolyzed, simultaneously because internal fiber element cell filling filler, effectively reduces thickness swelling rate, release material
Internal unnecessary internal stress, so that the ageing-resistant performance of sleeper composite significantly strengthens.
Embodiment
Count by weight, 45~50 parts of bentonites, 35~40 parts of mica powders and 10~15 parts of titanium dioxides are weighed respectively and are put
In ball grinder, under 250~300r/min after 3~5h of ball milling, cross 500 mesh sieves and obtain mixing and ball milling powder, in mass ratio 1:10,
Mixing and ball milling powder is mixed with the stirring of the aluminum sulfate solution of mass fraction 5%, 10~15min of ultrasonic disperse under 200~300W,
Obtain dispersion liquid；In mass ratio 1:1, mao bamboon is mixed and air-flow crushing with cotton wood, 50 mesh sieves is crossed and obtains composite fibre, by quality
Than 1:10, composite fibre is mixed with deionized water, dispersed with stirring obtains fiber mixed liquor, by volume 1:20, by mass fraction
5% hydrogen peroxide is added dropwise in fiber mixed liquor, after 20~25min of stirring mixing, obtains modification liquid, then by enzyme dosage 20U/g, by wood
Dextranase is added in modification liquid, 25~30min of heating water bath at 50~55 DEG C, and the hydroxide of mass fraction 5% is then added dropwise
Sodium solution is 8.0 to pH, after 2~3h of stirring mixing, obtains enzymolysis mixed liquor；By volume 1:1, by dispersion liquid and enzymolysis mixed liquor
Mixing, under 1000~1500r/min agitating devices after 25~30min of stirring dissociation, obtains dissociation solution, and by volume 1:1, it will solve
Chaotropic is mixed with combinated styrene content amount for 35~45% styrene-butadiene emulsion, continues to stir after 3~5h, still aging 1~2h, filtering
Filter cake is obtained, after deionized water rinsing 3~5 times, is dried at 100~110 DEG C to constant weight, obtains dry modified wood fibre, press
Mass ratio 1:5, modified wood fibre will be dried and be dipped in phenolic resin 2130, filter residue is filtered to obtain after 6~8h of immersion, by filter residue
Vacuum drying is placed in mould, and hot pressing to thickness is 25mm at 1~5MPa, 75~80 DEG C, is treated after the completion of hot pressing, is stood solid
Change is placed under 5~8MPa, is cold-pressed 3~5h, is then stood after 6~8h, you can be prepared into a kind of anti-aging sleeper composite.
Example 1
Count by weight, 45 parts of bentonites, 35 parts of mica powders and 10 parts of titanium dioxides are weighed respectively and are placed in ball grinder,
Under 250r/min after ball milling 3h, cross 500 mesh sieves and obtain mixing and ball milling powder, in mass ratio 1:10, by mixing and ball milling powder and quality
The stirring mixing of the aluminum sulfate solution of fraction 5%, ultrasonic disperse 10min, obtains dispersion liquid under 200W；In mass ratio 1:1, by mao bamboon with
Cotton wood mixing and air-flow crushing, cross 50 mesh sieves and obtain composite fibre, in mass ratio 1:10, composite fibre is mixed with deionized water
Close, dispersed with stirring obtains fiber mixed liquor, by volume 1:20, the hydrogen peroxide of mass fraction 5% is added dropwise in fiber mixed liquor, stirred
Mix after mixing 20min, obtain modification liquid, then by enzyme dosage 20U/g, zytase is added in modification liquid, the water-bath at 50 DEG C
25min is heated, it is 8.0 that the sodium hydroxide solution of mass fraction 5%, which is then added dropwise, to pH, after stirring mixing 2h, obtains enzymolysis mixed liquor；
By volume 1:1, dispersion liquid is mixed with enzymolysis mixed liquor, under 1000r/min agitating devices after stirring dissociation 25min, obtained
Dissociation solution, by volume 1:1, dissociation solution is mixed with combinated styrene content amount for 35% styrene-butadiene emulsion, continues to stir after 3h, it is quiet
Ageing 1h is put, filter cake is filtered to obtain, after deionized water rinsing 3 times, dried at 100 DEG C to constant weight, modified wooden fibre must be dried
Dimension, in mass ratio 1:5, modified wood fibre will be dried and be dipped in phenolic resin 2130, filter residue is filtered to obtain after immersion 6h, will filter
Slag vacuum drying is placed in mould, and hot pressing to thickness is 25mm at 1MPa, 75 DEG C, is treated after the completion of hot pressing, is stood solidification simultaneously
It is placed under 5MPa, is cold-pressed 3h, then stands after 6h, you can be prepared into a kind of anti-aging sleeper composite.
Example 2
Count by weight, 47 parts of bentonites, 37 parts of mica powders and 12 parts of titanium dioxides are weighed respectively and are placed in ball grinder,
Under 275r/min after ball milling 4h, cross 500 mesh sieves and obtain mixing and ball milling powder, in mass ratio 1:10, by mixing and ball milling powder and quality
The stirring mixing of the aluminum sulfate solution of fraction 5%, ultrasonic disperse 12min, obtains dispersion liquid under 250W；In mass ratio 1:1, by mao bamboon with
Cotton wood mixing and air-flow crushing, cross 50 mesh sieves and obtain composite fibre, in mass ratio 1:10, composite fibre is mixed with deionized water
Close, dispersed with stirring obtains fiber mixed liquor, by volume 1:20, the hydrogen peroxide of mass fraction 5% is added dropwise in fiber mixed liquor, stirred
Mix after mixing 22min, obtain modification liquid, then by enzyme dosage 20U/g, zytase is added in modification liquid, the water-bath at 52 DEG C
27min is heated, it is 8.0 that the sodium hydroxide solution of mass fraction 5%, which is then added dropwise, to pH, after stirring mixing 3h, obtains enzymolysis mixed liquor；
By volume 1:1, dispersion liquid is mixed with enzymolysis mixed liquor, under 1250r/min agitating devices after stirring dissociation 27min, obtained
Dissociation solution, by volume 1:1, dissociation solution is mixed with combinated styrene content amount for 40% styrene-butadiene emulsion, continues to stir after 4h, it is quiet
Ageing 2h is put, filter cake is filtered to obtain, after deionized water rinsing 4 times, dried at 105 DEG C to constant weight, modified wooden fibre must be dried
Dimension, in mass ratio 1:5, modified wood fibre will be dried and be dipped in phenolic resin 2130, filter residue is filtered to obtain after immersion 7h, will filter
Slag vacuum drying is placed in mould, and hot pressing to thickness is 25mm at 2MPa, 77 DEG C, is treated after the completion of hot pressing, is stood solidification simultaneously
It is placed under 7MPa, is cold-pressed 4h, then stands after 7h, you can be prepared into a kind of anti-aging sleeper composite.
Example 3
Count by weight, 50 parts of bentonites, 40 parts of mica powders and 15 parts of titanium dioxides are weighed respectively and are placed in ball grinder,
Under 300r/min after ball milling 5h, cross 500 mesh sieves and obtain mixing and ball milling powder, in mass ratio 1:10, by mixing and ball milling powder and quality
The stirring mixing of the aluminum sulfate solution of fraction 5%, ultrasonic disperse 15min, obtains dispersion liquid under 300W；In mass ratio 1:1, by mao bamboon with
Cotton wood mixing and air-flow crushing, cross 50 mesh sieves and obtain composite fibre, in mass ratio 1:10, composite fibre is mixed with deionized water
Close, dispersed with stirring obtains fiber mixed liquor, by volume 1:20, the hydrogen peroxide of mass fraction 5% is added dropwise in fiber mixed liquor, stirred
Mix after mixing 25min, obtain modification liquid, then by enzyme dosage 20U/g, zytase is added in modification liquid, the water-bath at 55 DEG C
30min is heated, it is 8.0 that the sodium hydroxide solution of mass fraction 5%, which is then added dropwise, to pH, after stirring mixing 3h, obtains enzymolysis mixed liquor；
By volume 1:1, dispersion liquid is mixed with enzymolysis mixed liquor, under 1500r/min agitating devices after stirring dissociation 30min, obtained
Dissociation solution, by volume 1:1, dissociation solution is mixed with combinated styrene content amount for 45% styrene-butadiene emulsion, continues to stir after 5h, it is quiet
Ageing 2h is put, filter cake is filtered to obtain, after deionized water rinsing 5 times, dried at 110 DEG C to constant weight, modified wooden fibre must be dried
Dimension, in mass ratio 1:5, modified wood fibre will be dried and be dipped in phenolic resin 2130, filter residue is filtered to obtain after immersion 8h, will filter
Slag vacuum drying is placed in mould, and hot pressing to thickness is 25mm at 5MPa, 80 DEG C, is treated after the completion of hot pressing, is stood solidification simultaneously
It is placed under 8MPa, is cold-pressed 5h, then stands after 8h, you can be prepared into a kind of anti-aging sleeper composite.
The railroad sleeper that Jining of Shandong Province company is produced, sleeper size performs GB154-84 sleeper standards, with the present invention
Sleeper material prepared by example 1,2,3 carries out performance comparison, is 60 DEG C ± 3 DEG C, under humidity is 50% ± 3% environment in temperature,
Circulation exposure 12h, wherein 8h are that illumination, 0.25h are that spray, 3.75h are dark high humidity environment, carry out burin-in process, specific right
Than parameter such as following table table 1.
The sleeper composite property contrast table of table 1
As seen from the above table, the sleeper composite that prepared by technical solution of the present invention has excellent ageing resistace.
Claims (7)
1. a kind of preparation method of anti-aging sleeper composite, it is characterised in that specifically preparation process is：
（1）Count by weight, 45~50 parts of bentonites, 35~40 parts of mica powders and 10~15 parts of titanium white spheres of powder are weighed respectively
Grind, sieve to obtain mixing and ball milling powder；
（2）In mass ratio 1:10, mixing and ball milling powder is mixed with the stirring of the aluminum sulfate solution of mass fraction 5%, in ultrasonic disperse,
Obtain dispersion liquid, in mass ratio 1:1, by mao bamboon and cotton wood co-grinding, composite fibre of sieving to obtain；
（3）In mass ratio 1:10, composite fibre is mixed with deionized water, dispersed with stirring obtains fiber mixed liquor, by volume 1:
20, hydrogen peroxide is added dropwise in fiber mixed liquor, stirring mixes to obtain modification liquid, then zytase is added in modification liquid, enzyme
Solution, which is handled, must digest mixed liquor；
（4）By volume 1:1, dispersion liquid mix with enzymolysis mixed liquor, stirs and dissociates to obtain dissociation solution, by volume 1:1, it will solve
Chaotropic is mixed with styrene-butadiene emulsion, after 3~5h of stirring, and still aging 1~2h filters to obtain filter cake, is washed, is dried, obtains dry modification
Wood fibre；
（5）In mass ratio 1:5, modified wood fibre will be dried and be dipped in phenolic resin 2130, filter residue is filtered to obtain after immersion, is done
Dry to be placed in mould, hot-pressing processing stands cold pressing treatment after solidification, continues to stand 6~8h, you can be prepared into a kind of anti-aging
Sleeper composite.
2. a kind of preparation method of anti-aging sleeper composite according to claim 1, it is characterised in that：Step（3）
Described hydrogen peroxide is the hydrogen peroxide of mass fraction 5%.
3. a kind of preparation method of anti-aging sleeper composite according to claim 1, it is characterised in that：Step（3）
Described zytase addition is 20U/g.
4. a kind of preparation method of anti-aging sleeper composite according to claim 1, it is characterised in that：Step（3）
Described enzymolysis processing condition is that the sodium hydroxide of mass fraction 5% is then added dropwise in 25~30min of heating water bath at 50~55 DEG C
Solution is 8.0 to pH, and stirring mixes 2~3h.
5. a kind of preparation method of anti-aging sleeper composite according to claim 1, it is characterised in that：Step（4）
Described styrene-butadiene emulsion is the styrene-butadiene emulsion that combinated styrene content amount is 35~45%.
6. a kind of preparation method of anti-aging sleeper composite according to claim 1, it is characterised in that：Step（5）
Described autoclaving conditions are, the hot-pressing processing at 1~5MPa, 75~80 DEG C.
7. a kind of preparation method of anti-aging sleeper composite according to claim 1, it is characterised in that：Step（5）
Described cold pressing treatment condition is, under 5~8MPa, is cold-pressed 3~5h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710528005.5A CN107283588B (en) | 2017-06-30 | 2017-06-30 | A kind of preparation method of anti-aging sleeper composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710528005.5A CN107283588B (en) | 2017-06-30 | 2017-06-30 | A kind of preparation method of anti-aging sleeper composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107283588A true CN107283588A (en) | 2017-10-24 |
| CN107283588B CN107283588B (en) | 2019-04-09 |
Family
ID=60098343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710528005.5A Active CN107283588B (en) | 2017-06-30 | 2017-06-30 | A kind of preparation method of anti-aging sleeper composite material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107283588B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107903645A (en) * | 2017-11-08 | 2018-04-13 | 江苏华友装饰工程有限公司 | A kind of preparation method of weather-proof antiglare shield |
| CN108442209A (en) * | 2018-03-12 | 2018-08-24 | 常州五荣化工有限公司 | A kind of preparation method of stamp type plastic cement race track |
| WO2020151104A1 (en) * | 2019-01-23 | 2020-07-30 | 湖南桃花江竹材科技股份有限公司 | Assembled bamboo sleeper and preparation method therefor |
| CN114149226A (en) * | 2021-12-09 | 2022-03-08 | 中国矿业大学 | Wood nano-cellulose modified cemented filling material for deep structure filling and preparation method thereof |
| CN114350169A (en) * | 2022-01-10 | 2022-04-15 | 南京林业大学 | Preparation method of formaldehyde-free high-strength electromagnetic shielding wood fiber composite material |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712179A (en) * | 2009-11-06 | 2010-05-26 | 南京林业大学 | Manufacturing method of cold plasma modified cellulolytic enzyme lignin/plant fiber composite material |
| CN102744753A (en) * | 2012-07-24 | 2012-10-24 | 东北林业大学 | Preparation method of phenol-formaldehyde resin based composite material sleeper |
| CN103254625A (en) * | 2013-04-10 | 2013-08-21 | 青岛永卓真塑料制品有限公司 | Manufacturing process for modified bamboo fiber used for nylon |
| CN104762851A (en) * | 2015-04-16 | 2015-07-08 | 上海高铁电气科技有限公司 | Composite sleeper with insulation skirt edges |
-
2017
- 2017-06-30 CN CN201710528005.5A patent/CN107283588B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101712179A (en) * | 2009-11-06 | 2010-05-26 | 南京林业大学 | Manufacturing method of cold plasma modified cellulolytic enzyme lignin/plant fiber composite material |
| CN102744753A (en) * | 2012-07-24 | 2012-10-24 | 东北林业大学 | Preparation method of phenol-formaldehyde resin based composite material sleeper |
| CN103254625A (en) * | 2013-04-10 | 2013-08-21 | 青岛永卓真塑料制品有限公司 | Manufacturing process for modified bamboo fiber used for nylon |
| CN104762851A (en) * | 2015-04-16 | 2015-07-08 | 上海高铁电气科技有限公司 | Composite sleeper with insulation skirt edges |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107903645A (en) * | 2017-11-08 | 2018-04-13 | 江苏华友装饰工程有限公司 | A kind of preparation method of weather-proof antiglare shield |
| CN108442209A (en) * | 2018-03-12 | 2018-08-24 | 常州五荣化工有限公司 | A kind of preparation method of stamp type plastic cement race track |
| WO2020151104A1 (en) * | 2019-01-23 | 2020-07-30 | 湖南桃花江竹材科技股份有限公司 | Assembled bamboo sleeper and preparation method therefor |
| CN114149226A (en) * | 2021-12-09 | 2022-03-08 | 中国矿业大学 | Wood nano-cellulose modified cemented filling material for deep structure filling and preparation method thereof |
| CN114350169A (en) * | 2022-01-10 | 2022-04-15 | 南京林业大学 | Preparation method of formaldehyde-free high-strength electromagnetic shielding wood fiber composite material |
| CN114350169B (en) * | 2022-01-10 | 2023-02-28 | 南京林业大学 | Preparation method of formaldehyde-free high-strength electromagnetic shielding wood fiber composite material |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107283588B (en) | 2019-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107283588A (en) | A kind of preparation method of anti-aging sleeper composite | |
| CN110002817A (en) | A kind of cement stabilized macadam material and its preparation process | |
| CN105271918A (en) | Cement grinding aid and preparation method thereof | |
| EP3467045A1 (en) | Plant mix warm regenerated asphalt mixture and preparation method therefor | |
| CN108658573A (en) | A kind of anti-shedding aeroge complex heat-preservation felt | |
| Abdullah et al. | Assessment of physical and mechanical properties of cement panel influenced by treated and untreated coconut fiber addition | |
| CN108247803A (en) | A kind of preparation method of the not mould non-ignitable bamboo shaving plate of no aldehyde | |
| CN101838934A (en) | Soaking agent for surface processing of glass fiber filter cloth and preparation method thereof | |
| CN108911599B (en) | Method for simultaneously preparing iron oxide and silicon dioxide aerogel pad from iron tailings | |
| CN110981328A (en) | Anti-cracking concrete and production process thereof | |
| CN109734369A (en) | A kind of foam air-entrained concrete building block and preparation method thereof prepared using iron tailings as raw material normal temperature and pressure | |
| CN107687108A (en) | A kind of preparation method of high-strength transparent nanofiber element paper | |
| CN106497114A (en) | A kind of preparation method of wood plastic composite | |
| CN106045388A (en) | Rubber aggregate concrete | |
| CN112441780A (en) | Method for preparing baking-free geopolymer material by utilizing spodumene flotation tailings | |
| CN111892346A (en) | Environment-friendly modified straw fiber regenerated fine aggregate cement-based composite material and preparation method thereof | |
| CN108821717A (en) | A method of light heat-insulation wall material is prepared with modified moso bamboo wood shavings-rice straw | |
| CN108908638A (en) | A kind of preparation method of water-fast shaving board | |
| CN110255948A (en) | Concrete anticracking self repairing agent and preparation method thereof and cracking resistance self-repair concrete | |
| CN108947574A (en) | A kind of preparation method of wheat straw fiber composite material | |
| CN106380607A (en) | Preparation method of modified wood powder | |
| CN103103893B (en) | Method for reducing food packaging paper pulp molded product fiber dosage | |
| CN105347764B (en) | A kind of method that fiber substance is used to prepare grey moulding material | |
| CN107034712B (en) | A kind of novel papermaking method | |
| CN103172882B (en) | Preparation method of synergistically reinforced and toughened epoxy resin composite material |
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 | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20190314 Address after: 317100 Room 601, 52 Wall Li Road, Haiyou Street, Sanmen County, Taizhou City, Zhejiang Province Applicant after: Lai Shanghui Address before: 213102 No. 801 Changwuzhong Road, Wujin District, Changzhou City, Jiangsu Province, Block C, Tianrun Science and Technology Building, Changzhou Science and Education City, 809 Applicant before: CHANGZHOU DA AO NEW MSTAR TECHNOLOGY CO., LTD. |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |