CN101982506A - Special wood and plastic material for railway sleeper - Google Patents
Special wood and plastic material for railway sleeper Download PDFInfo
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- CN101982506A CN101982506A CN201010528669XA CN201010528669A CN101982506A CN 101982506 A CN101982506 A CN 101982506A CN 201010528669X A CN201010528669X A CN 201010528669XA CN 201010528669 A CN201010528669 A CN 201010528669A CN 101982506 A CN101982506 A CN 101982506A
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- wood
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- sleeper
- railway sleeper
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Abstract
The invention discloses a special wood and plastic material for a railway sleeper, which comprises the following components by weight ratio: 5-30% of polypropylene recycled material, 5-30% of polyethylene recycled material, 51-70% of wood flour, 0.2-2.0% of lubricant, 3-15% of coating agent, 1.0-8.0% of coupling agent, 1.0-5.0% of moisture absorbing agent, 0.5-2.0% of anti-aging agent and 0.1-5.5% of other additives. The special wood and plastic material for the railway sleeper can lead the proportion of crop straw powder to be far higher than 50% on the basis of having excellent comprehensive mechanical properties and good processability, and the use of the material can rapidly produce the railway sleeper by extrusion; furthermore, the product has high strength and can keep all the advantages of the wood sleeper, avoid the decay phenomenon, relatively greatly prolong the service life, simultaneously avoid consuming wood, realizing low cost and simple processing and being in line with environmental protection.
Description
Technical field
The present invention relates to a kind of matrix material, more particularly, relate to the special-purpose Wood-plastic material of a kind of railroad tie.The invention still further relates to the method for making the special-purpose Wood-plastic material of this railroad tie.
Background technology
Railroad tie is pressed the material properties classification: wooden crossties; The Steel Concrete sleeper; The steel sleeper; The matrix material sleeper.Wherein, the characteristics of wooden crossties: good springiness, in light weight, make simply good insulation preformance.Fastener is connected with sleeper simply, and laying and maintenance, convenient transportation have bigger frictional coefficient between sleeper and the broken stone metaling.Sleeper is rich in tough erosion, more can absorb weight that train driving produces and easy fracture not than other sleepers.But its shortcoming is to use the time limit shorter, and the consumption amount of wood is big.Sleeper is rotten easily, the many influences of reason from insect pest, natural environment and climate, and also with the passing of time the railway spike hole on the sleeper can relax because of using, so general sleeper has only the life-span of more than ten years at most.For effectively increasing the service life, sleeper generally must use through the anticorrosion back of oiling.Present employed sleeper all passes through rotproofing, to stop insect pest and to prolong working life.Also do not adopt Wood-plastic material to produce sleeper in the market.
Wood-plastic material in the market is wood powder or xylon and the plastics compound that adopts log mostly, the lumbering deforestation there is certain pushing effect, and, because the strength of materials and processibility are bad, only only limit to extrude the product that some are simple relatively, intensity is not high, the processing charges that causes owing to processibility is bad again is high simultaneously looks forward to, thereby has to reduce as possible material cost, having gone on the route of the vicious cycle competition of inferior quality low price, is huge to the damage of this industry.
The country that has abroad, the wood plastic product more than 50% that the wood powder ratio accounts for overall proportion just can be as being that woodwork is sold society; Because wood powder and plastics are refuse reclamation all, so in raising people's quality of life and level, also be huge to the meaning of environment protection.
Summary of the invention
The objective of the invention is to, provide the wooden sleeper of a kind of maintenance whole advantages, do not produce the special-purpose Wood-plastic material of railroad tie of rotten phenomenon.
Technical scheme provided by the invention is as follows: it forms polypropylene reclaiming material: 5-30%, polyethylene reclaiming material: 5-30% by weight by following composition; Wood powder: 51-70%; Lubricant: 0.2-2.0%; Coating: 3-15%; Coupling agent: 1.0-8.0%; Moisture adsorbent: 1.0-5.0%; Anti-aging agent: 0.5-2.0%; Other auxiliary agents: 0.1-5.5%.
The preparation method of the special-purpose Wood-plastic material of railroad tie of the present invention, comprise the steps: earlier with polypropylene, polyethylene, wood powder, lubricant, coating, coupling agent, moisture adsorbent, anti-aging agent, other auxiliary agents proportionally after the weighing in mixer low speed mixing 5 minutes, again through twin screw extruder mixingly under the screw combinations situation that certain intensity is sheared extrude, pelletizing, make the special-purpose Wood-plastic material of railroad tie through screening and dewatering.
The special-purpose Wood-plastic material of railroad tie of the present invention, good at comprehensive mechanical performance, on the processibility good basis, agricultural crop straw powder proportion is far above 50%, can extrude the production railroad tie fast with material of the present invention, and the product strength height keeps the whole advantages of wooden sleeper, does not produce rotten phenomenon, be not afraid of from insect pest, the influence of natural environment and climate, do not worry that problems such as distortion relatively significantly prolong work-ing life owing to soak, do not consume timber simultaneously, simultaneously with low cost, process easyly, meet environmental protection, economic characteristics, harmless, production procurement is convenient, has improved competitive power.
Embodiment
Below be the most preferred embodiment of the special-purpose Wood-plastic material of railroad tie of the present invention, therefore do not limit protection scope of the present invention.
Embodiment one, provides a kind of railroad tie special-purpose Wood-plastic material, forms polypropylene reclaiming material by weight by following composition: 14%, and polyethylene reclaiming material: 14%; Wood powder: 57%; Lubricant: 1.0%; Coating: 3.0%; Coupling agent: 5.0%; Moisture adsorbent: 2.5%; Anti-aging agent: 2.0%; Other auxiliary agents: 1.5%.
Concrete steps of the present invention are: earlier will be earlier with polypropylene, polyethylene, wood powder, lubricant, coating, coupling agent, moisture adsorbent, anti-aging agent, other auxiliary agents proportionally after the weighing in mixer low speed mixing 5 minutes, mixer adopts low speed mixing, paddle should with the barrel gap less than 0.5 centimetre, the supplementary material mixed effect should visual various particles and powder even substantially, do not have obvious agglomerate or gather; Twin screw extruder uses 32 length-to-diameter ratios, and the combination of prescribed strength shear screw is provided with certain rotating speed; Adopt die face ring cutting mode, promptly make the special-purpose Wood-plastic material of railroad tie through screening and dewatering.
The above; it only is the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; any those of ordinary skill in the art are in the disclosed technical scope of the present invention; variation or the replacement that can expect without creative work all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (2)
1. the special-purpose Wood-plastic material of railroad tie is characterized in that, forms polypropylene reclaiming material: 5-30%, polyethylene reclaiming material: 5-30% by weight by following composition; Wood powder: 51-70%; Lubricant: 0.2-2.0%; Coating: 3-15%; Coupling agent: 1.0-8.0%; Moisture adsorbent: 1.0-5.0%; Anti-aging agent: 0.5-2.0%; Other auxiliary agents: 0.1-5.5%.
2. the preparation method of the special-purpose Wood-plastic material of a railroad tie, it is characterized in that, comprise the steps: earlier with polypropylene, polyethylene, wood powder, lubricant, coating, coupling agent, moisture adsorbent, anti-aging agent, other auxiliary agents proportionally after the weighing in mixer low speed mixing 5 minutes, again through twin screw extruder mixingly under the screw combinations situation that certain intensity is sheared extrude, pelletizing, make the special-purpose Wood-plastic material of railroad tie through screening and dewatering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010528669XA CN101982506A (en) | 2010-11-02 | 2010-11-02 | Special wood and plastic material for railway sleeper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010528669XA CN101982506A (en) | 2010-11-02 | 2010-11-02 | Special wood and plastic material for railway sleeper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101982506A true CN101982506A (en) | 2011-03-02 |
Family
ID=43619419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010528669XA Pending CN101982506A (en) | 2010-11-02 | 2010-11-02 | Special wood and plastic material for railway sleeper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101982506A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585534A (en) * | 2012-01-16 | 2012-07-18 | 苏州工业园区科创橡塑有限公司 | Low-carbon environment-friendly material for injection molding |
| CN103694524A (en) * | 2012-09-28 | 2014-04-02 | 孟建林 | Crosstie |
| CN103773052A (en) * | 2013-01-23 | 2014-05-07 | 科创聚合物(苏州)有限公司 | Wood-plastic material and technology thereof |
-
2010
- 2010-11-02 CN CN201010528669XA patent/CN101982506A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102585534A (en) * | 2012-01-16 | 2012-07-18 | 苏州工业园区科创橡塑有限公司 | Low-carbon environment-friendly material for injection molding |
| CN103694524A (en) * | 2012-09-28 | 2014-04-02 | 孟建林 | Crosstie |
| CN103773052A (en) * | 2013-01-23 | 2014-05-07 | 科创聚合物(苏州)有限公司 | Wood-plastic material and technology thereof |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110302 |