CN1281875A - Production method of straw and plastic composite material - Google Patents
Production method of straw and plastic composite material Download PDFInfo
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- CN1281875A CN1281875A CN 99115034 CN99115034A CN1281875A CN 1281875 A CN1281875 A CN 1281875A CN 99115034 CN99115034 CN 99115034 CN 99115034 A CN99115034 A CN 99115034A CN 1281875 A CN1281875 A CN 1281875A
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Abstract
The production method of stalks/plastics composite material includes the following steps: using surface treatment agent to treat pulverized stalks, then heating the trated stalks and plastics together, melting and mixing them, using press to make the above-mentioned mixed material into plate material or using extruder or injection moulding machine to form into shape directly. Said invention is simple in method, easy to implement, low in cost, high in production efficiency, can be used in the fields of strengthened composite floor base material, furniture and decorative material, etc..
Description
The present invention relates to agricultural crop straw processing, utilize technical field, be a kind of crushed stalk is handled after, mix the method for producing straw and plastic composite material with plastics.
China is a large agricultural country, and the agricultural straw resource that agricultural production process produced is very abundant, how stalk resource is actively effectively utilized the service for the mankind, be one of crucial importance and far-reaching problem arranged.It is reported, at present to the main three kinds of methods such as burning, papermaking, gasification that adopt of processing, the utilization of stalk.It is a kind of primary processing mode that crop straw burning is handled, and it is contaminate environment not only, and the waste resource, is that country forbids strictly.Though stalk papermaking can produce favorable economic benefit, a kind of good method of utilizing stalk resource of can yet be regarded as, " three wastes " serious environment pollution that in paper-making process, produces.Gasification is with the stalk collection and confinement of gases that produces of the incomplete combustion use that acts as a fuel at high temperature.Though this method can make stalk resource be effectively utilized, production cost height, efficient are low, and also there is problem of environmental pollution simultaneously in deficiency in economic performance.In addition, the China's Forest Resources scarcity, the enforcement of wood protection method in addition dynamics is strengthened gradually, and this will cause China's wood supply amount in longer for some time from now on to reduce significantly, therefore, press for development of new material substitution timber.
One of purpose of the present invention is the shortcoming that overcomes prior art, plan provides a kind of new processing, utilizes the method for stalk, soon stalk joins and makes straw and plastic composite material in the plastics, make it both to effectively utilize stalk resource, do not pollute the environment again, and the matrix material of being produced has wood characteristics concurrently, be better than timber again, can be used as timber and be extensive use of, and cheap.
Two of purpose of the present invention is on the basis of above-mentioned basic design, and a kind of concrete grammar of producing straw and plastic composite material is provided.
One of purpose of the present invention is to be reached by a kind of like this technical solution: after soon the stalk after the pulverization process is handled with surface treatment agent, mix with the plastics heating and melting again, be pressed into sheet material with press then, or make product with forcing machine or injection moulding machine straight forming.
The concrete grammar of the production straw and plastic composite material that two plans of purpose of the present invention provide is as follows:
1. after crushed stalk being granularity 30～80 orders, drying is 0.5～4 hour under 60～80 ℃;
2. adding in straw powder by straw powder consumption quality is 0.5～10% surface treatment agent mixing, and handles 5～10 minutes down for 60～170 ℃ in temperature;
3. the stalk 20～85% (quality) after will handling was with plastics 15～80% (quality), 130～200 ℃ of following melting mixing of temperature 5～20 minutes;
4. the material with mixing directly is pressed into sheet material with press, press temperature is 160～190 ℃, press time is 0.2～1 hour, pressing pressure is 3～5MPa, after perhaps the material cooling of mixing being pulverized, with forcing machine or injection moulding machine moulding, mold temperature is 130～190 ℃ again, 30～100 rev/mins of screw speeds.
Wherein used stalk can be selected rice straw, straw, sorghum stalk and cornstalk etc. for use, preferably selects rice straw and straw for use.
Used surface treatment agent can be selected urea-formaldehyde resin, titanate coupling agent, maleic anhydride grafted polyethylene and maleic anhydride inoculated polypropylene etc. for use.
Used plastics can be selected thermoplasticss such as polyvinyl chloride, polyethylene and polypropylene for use, wherein can contain the recovery plastics of 0～30% (quality).
Compared with the prior art the present invention has the following advantages:
1. because the present invention does not have obnoxious flavour, waste water, residue generation in whole process of production, the in use formaldehydeless obnoxious flavour that waits of the straw and plastic composite material of being produced discharges in addition, therefore can not cause environmental pollution and bring infringement to human body, be a kind of stalk environmental protection treatment process and green material of worth high praise.
2. because stalk treatment capacity of the present invention is big, its consumption reaches as high as 85%, and its source is abundant, with low cost, thereby not only can save the comparatively expensive plastics of a large amount of prices, reduce the cost of pure plastics, but also open up a new way for effective utilization of stalk resource.
3. simple, the easy row of the inventive method technology does not need special equipment, and general plastic molding and processing plant just can implement.Even a newly-built floor base material production line of producing 1000000 square metres per year only needs 5,000,000 yuan of investments, 1 year just can make a profit 1000～2,000 ten thousand yuan (by 35 yuan every square metre of floor base material prices), so investment is little, the economic benefit height.
4. the straw and plastic composite material produced of the present invention, not only can saw, dig, punch and paint as timber, and physical strength height, water-absorbent is littler than timber, dimensional stability is better than timber, also have flame retardant resistance, because its over-all properties is better than middle and higher density fiberboard (seeing Table 1), therefore alternative middle and higher density fibre board use is in reinforced composite floorboard base material, furniture, finishing material etc.
Provide embodiment below and be described further, but the present invention is not limited to these examples.
Embodiment one
1. the straw of selecting for use is pulverized with feed grinder, after 30 mesh sieve sieve, descended dry 2 hours to remove wherein contained moisture content 80 ℃ of temperature.
2. dried straw powder is poured in the high speed kneader, adding by straw powder total amount quality is 0.5% titanate coupling agent mixing, and handles 10 minutes down for 60 ℃ in temperature, to strengthen the interaction between stalk and plastic interface, improves bonding force.
3. the straw powder 60% (quality) that will handle through surface treatment agent and igelite 40% (quality) together, under 180 ℃ of temperature, it is in blocks to mix 15 minutes plasticizing post-tensionings in two roller mills.
4. the material sheet is built up certain thickness in drying under 80 ℃ after 2 hours, be pressed into sheet material with press, 180 ℃ of press temperatures, 0.5 hour press time, pressing pressure 3MPa, plate thickness are 4 millimeters, the salient features of sheet material is as shown in table 1.
Embodiment two
1. the straw of selecting for use is pulverized with feed grinder, after 80 mesh sieve sieve, following dry 2 hours 80 ℃ of temperature.
2. dried straw powder is placed the high speed kneader, adding by straw powder total amount quality is 10% urea-formaldehyde resin mixing, and handles 5 minutes down for 60 ℃ in temperature.
3. the straw powder 60% (quality) that will handle through surface treatment agent and vinyon 40% (quality) together, under 165 ℃ of temperature, melting mixing discharging in 10～15 minutes in Banbury mixer.
4. after cooling with the agglomerate material with plastic crusher pulverize pellet, the particle diameter of pellet is controlled at 1～2 millimeter.Institute's pellet that obtains is through 80 ℃, and 2 hours dryings get end article with the injection moulding machine injection moulding, 130～180 ℃ of mold temperatures.
Embodiment three
1. the straw of selecting for use is pulverized with feed grinder, after 80 mesh sieve sieve, following dry 4 hours 60 ℃ of temperature.
2. dried straw powder is placed the high speed kneader, adding by straw powder total amount quality is that 5% maleic anhydride inoculated polypropylene slightly mixes, and is placed on fusion mixing in the Banbury mixer again, 170 ℃ of temperature, 5 minutes time.
3. the straw powder 60% (quality) that will handle through surface treatment agent adds the acrylic plastering of 40% (quality), keeps 170 ℃ of temperature, melting mixing discharging in 10 minutes again.
4. after cooling with the agglomerate material with plastic crusher pulverize pellet, the particle diameter of pellet is controlled at 1～2 millimeter.Institute's pellet that obtains got end article with the injection moulding machine injection moulding, 130～185 ℃ of mold temperatures after under 80 ℃ dry 1 hour.
Embodiment four
1. the rice straw of selecting for use is pulverized with feed grinder, after 60 mesh sieve sieve, following dry 4 hours 60 ℃ of temperature.
2. dried rice straw powder is placed the high speed kneader, adding by rice straw powder total amount quality is that 1% titanate coupling agent mixes, and handles 10 minutes down for 60 ℃ in temperature.
3. the rice straw powder 70% (quality) that will handle through surface treatment agent and acrylic plastering 30% (quality) under 170 ℃ of temperature, mixed 10～20 minutes in two roller mills together, waited to plastify even back sheet down.
4. the material sheet is built up certain thickness in drying under 80 ℃ after 2 hours, on press, be pressed into the sheet material of 4 mm thick again.170 ℃ of press temperatures, 20～30 minutes press times, pressing pressure 3MPa.
Embodiment five
1. straw and each 50% usefulness feed grinder of rice straw of selecting for use are pulverized, after 60 mesh sieve sieve, following dry 1 hour 70 ℃ of temperature.
2. dried paddy and wheat stalk powder is placed the high speed kneader, adding by paddy and wheat stalk powder total amount quality is 1% titanate coupling agent mixing, and handles 10 minutes down for 60 ℃ in temperature.
3. the paddy and wheat stalk powder that will handle through surface treatment agent totally 50% (quality) and vinyon 50% (quality), wherein reclaim polyethylene and account for the total components 30% of plastics (quality) together, extrude in 130～180 ℃ of temperature melting mixing on twin screw extruder, granulation gets pellet.
4. this pellet after dry 2 hours, gets end article with the injection moulding machine injection moulding by under 60 ℃, and mold temperature is 130～180 ℃.Table 1
| Test event | Testing standard | Straw and plastic composite material | Medium density fibre board (MDF) (superfine standard) |
| Water-intake rate (%) | GB1034-89 | ????0．5 | ????≤15 |
| Density (g/cm 3) | GB1033-89 | ????1．4 | ????≥1．0 |
| Water content (%) | GB1034-89 | ????0．10 | ????4～10 |
| Flexural strength (MPa) | GB11718．8-89 | ????59 | ????29 |
| Planar stretch intensity (MPa) | GB11718．7-89 | ????3．05 | ????0．62 |
| Young's modulus (MPa) | GB11718．8-89 | ????4308 | ????2070 |
| Elongation at break (%) | GB1040-79 | ????10 | ????／ |
Claims (7)
1. the production method of a straw and plastic composite material after it is characterized in that the stalk after the pulverization process handled with surface treatment agent, is mixed with the plastics heating and melting again, is pressed into sheet material with press then, or with forcing machine or injection moulding machine straight forming.
2. the production method of straw and plastic composite material according to claim 1 is characterized in that:
1. after crushed stalk being granularity 30～80 orders, drying is 0.5～4 hour under 60～80 ℃;
2. adding in straw powder by straw powder total amount quality is 0.5～10% surface treatment agent mixing, and handles 5～10 minutes down for 60～170 ℃ in temperature;
3. the straw powder 20～85% (quality) after will handling was with plastics 15～80% (quality), 130～200 ℃ of following melting mixing of temperature 5～20 minutes;
4. the material with mixing directly is pressed into sheet material with press, press temperature is 160～190 ℃, press time is 0.2～1 hour, pressing pressure is 3～5MPa, after perhaps the material cooling of mixing being pulverized, with forcing machine or injection moulding machine moulding, mold temperature is 130～190 ℃ again, 30～100 rev/mins of screw speeds.
3. the production method of straw and plastic composite material according to claim 1 and 2 is characterized in that stalk can select rice straw, straw, sorghum stalk and cornstalk etc. for use, preferably selects rice straw and straw for use.
4. the production method of straw and plastic composite material according to claim 1 and 2 is characterized in that surface treatment agent can select urea-formaldehyde resin, titanate coupling agent, maleic anhydride grafted polyethylene and maleic anhydride inoculated polypropylene etc. for use.
5. the production method of straw and plastic composite material according to claim 1 and 2 is characterized in that plastics can select thermoplasticss such as polyvinyl chloride, polyethylene and polypropylene for use.
6. the production method of straw and plastic composite material according to claim 1 and 2 is characterized in that can containing in the employed plastics recovery plastics of 0～30% (quality).
7. the production method of straw and plastic composite material according to claim 5 is characterized in that can containing in the employed plastics recovery plastics of 0～30% (quality).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115034 CN1101838C (en) | 1999-07-23 | 1999-07-23 | Production method of straw and plastic composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99115034 CN1101838C (en) | 1999-07-23 | 1999-07-23 | Production method of straw and plastic composite material |
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| Publication Number | Publication Date |
|---|---|
| CN1281875A true CN1281875A (en) | 2001-01-31 |
| CN1101838C CN1101838C (en) | 2003-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99115034 Expired - Fee Related CN1101838C (en) | 1999-07-23 | 1999-07-23 | Production method of straw and plastic composite material |
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| CN (1) | CN1101838C (en) |
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| CN1328312C (en) * | 2003-11-03 | 2007-07-25 | 倪斌 | Plant fibre-polypropylene composite material and preparation thereof |
| CN100427548C (en) * | 2005-12-01 | 2008-10-22 | 清华大学 | Preparation method of plastic wood composite material |
| CN100434481C (en) * | 2006-10-09 | 2008-11-19 | 华明扬 | Flame-proof bactericidal plant fiber powder/ high polymer plastic composite hollow straight tube and its preparation method |
| CN101029418B (en) * | 2007-02-15 | 2010-05-19 | 张人勤 | Active non-lignocellulose plant fibre, its production and use |
| CN101168622B (en) * | 2007-11-19 | 2010-07-14 | 西安理工大学 | Plant straw enhancement polyolefin composite material and manufacturing method thereof |
| CN101139453B (en) * | 2007-08-23 | 2010-12-01 | 钟林 | Circulating mix-smelting plastic-wood composite material, production method and freight pallet manufactured by the same |
| CN103373015A (en) * | 2012-04-28 | 2013-10-30 | 上海杰事杰新材料(集团)股份有限公司 | Wheat-straw/PP fabric lamination lightweight composite board and preparation method thereof |
| CN103459108A (en) * | 2011-04-05 | 2013-12-18 | Handy技术株式会社 | Process for producing wooden synthetic construction material |
| CN103649406A (en) * | 2011-01-13 | 2014-03-19 | Blmh科技股份有限公司 | Method for forming a fire resistant cellulose product, and associated apparatus |
| CN103923370A (en) * | 2014-03-27 | 2014-07-16 | 安徽华兴金属有限责任公司 | Sectional material and preparation method thereof |
| CN104829973A (en) * | 2015-05-28 | 2015-08-12 | 天津市甘霖建材科技发展有限公司 | Production method of high-antiflaming high-strength low-shrinkage composite material for construction plastic formwork |
| CN105714617A (en) * | 2016-02-27 | 2016-06-29 | 柳州市够旺贸易有限公司 | Manufacturing method of sound-absorption wallpaper |
| CN105735590A (en) * | 2016-02-27 | 2016-07-06 | 柳州市够旺贸易有限公司 | Sound absorption wallpaper |
| CN105755893A (en) * | 2016-02-27 | 2016-07-13 | 柳州市够旺贸易有限公司 | Sound insulation wallpaper |
| CN106881887A (en) * | 2017-01-11 | 2017-06-23 | 杨太松 | A kind of processing method of stalk carbon fiber composite board |
| CN107118513A (en) * | 2017-07-05 | 2017-09-01 | 合肥万之景门窗有限公司 | A kind of preparation method of novel plastic |
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| CN110669277A (en) * | 2019-11-15 | 2020-01-10 | 黑龙江幸福人生态农业开发股份有限公司 | Environment-friendly degradable plastic turnover box made of straw or rice hull raw materials |
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| CN1328312C (en) * | 2003-11-03 | 2007-07-25 | 倪斌 | Plant fibre-polypropylene composite material and preparation thereof |
| CN100427548C (en) * | 2005-12-01 | 2008-10-22 | 清华大学 | Preparation method of plastic wood composite material |
| CN100434481C (en) * | 2006-10-09 | 2008-11-19 | 华明扬 | Flame-proof bactericidal plant fiber powder/ high polymer plastic composite hollow straight tube and its preparation method |
| CN101029418B (en) * | 2007-02-15 | 2010-05-19 | 张人勤 | Active non-lignocellulose plant fibre, its production and use |
| CN101139453B (en) * | 2007-08-23 | 2010-12-01 | 钟林 | Circulating mix-smelting plastic-wood composite material, production method and freight pallet manufactured by the same |
| CN101168622B (en) * | 2007-11-19 | 2010-07-14 | 西安理工大学 | Plant straw enhancement polyolefin composite material and manufacturing method thereof |
| CN103649406A (en) * | 2011-01-13 | 2014-03-19 | Blmh科技股份有限公司 | Method for forming a fire resistant cellulose product, and associated apparatus |
| CN103649406B (en) * | 2011-01-13 | 2015-11-25 | Blmh科技股份有限公司 | Form method and the relevant device thereof of refractory fibre element product |
| CN103459108B (en) * | 2011-04-05 | 2015-04-15 | Handy技术株式会社 | Process for producing wooden synthetic construction material |
| CN103459108A (en) * | 2011-04-05 | 2013-12-18 | Handy技术株式会社 | Process for producing wooden synthetic construction material |
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