CN100396461C - Technical method for preparing special active plasticized granule for wood-plastic composite material utilizing agricultural stalk - Google Patents
Technical method for preparing special active plasticized granule for wood-plastic composite material utilizing agricultural stalk Download PDFInfo
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- CN100396461C CN100396461C CNB2006100404655A CN200610040465A CN100396461C CN 100396461 C CN100396461 C CN 100396461C CN B2006100404655 A CNB2006100404655 A CN B2006100404655A CN 200610040465 A CN200610040465 A CN 200610040465A CN 100396461 C CN100396461 C CN 100396461C
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- granule
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Abstract
The present invention relates to a technical method for preparing special raw materials for wood-plastic composite materials utilizing agricultural stalks, which is characterized in that agricultural stalks are cut into sections and plasticized after milled in order to obtain fluffy active plasticized materials; after surface treatment and formulation design, the plasticized materials enter a parallel double-screw pelletizer for making granules, and thus, granular products are obtained. The present invention uses an alkaline process technology and the special formulation design to prepare high-performance active plasticized granules using the agricultural stalks, and the requirements of the industrial production of wood-plastic composite materials can be satisfied. Production efficiency is increased more than 40 times as compared with that in a traditional method. The technical difficulty of the pretreatment of the principal raw materials of the wood-plastic composite materials is broken through, and the whole production process has no environmental pollution. The present invention has the characteristics of short production period, small ground occupation and favorable performance of products.
Description
Technical field
The present invention relates to the process that agricultural stalk or wood chip or rice chaff or bagasse prepare special active plasticized granule for wood-plastic composite material.
Background technology
Agricultural stalk is the primary raw material (accounting for the 50-90% of total amount) of string base wood-plastic composite material, traditional wood plastic composite mainly is as packing material with plant fiber powder, very difficult realization " polymer chemistry is compound " truly, thus limited the serviceability and the scope of application of product.
It is the natural high molecular composite material of main body that string is actually a kind of cellulose, hemicellulose, lignin three class natural macromolecular materials.This big molecule life compound substance is a complex system.The string surface is the polyhydroxy structure, it is the polarity hydrophilic substance, and general artificial synthetic high polymer (plastics) is nonpolar oleophilic substance, both are difficult to compatible, and compatibility is poor, as simply with the two direct blend, interior outward appearance is coarse, goods become fragile, and machinery, mechanical property is very poor, thereby have limited the scope of application of product.Must activate and plastics processing string.There are long, shortcomings such as technology is backward, floor space is big, cost is high, poor product quality of cycle in traditional string plasticizing.
Summary of the invention
The present invention is intended to: provide a kind of utilize agricultural stalk or wood chip or rice chaff or bagasse prepare the wood plastic composite special use, have a process of activity, plastic particle material.
Concrete preparation manipulation process is as follows:
Utilize agricultural stalk to prepare the process of special active plasticized granule for wood-plastic composite material, comprise following operation:
(1), plasticizing operation
A, with the agricultural stalk segment and be milled to 20-40 order coarse granule,
B, above-mentioned particle is sent into mixer for 100 parts, and to add concentration be NaOH 3-5 part, urea 3-5 part and synergist 1-7 part of 1.5-3%, mixing and stirring;
C, the material that stirs is sent into 25m
3General paper-making fibre digesting apparatus, temperature 90-105 ℃, boiling fusion time 3-4 hour gets fluffy active plasticized material;
Getting moisture content after D, cooling, the air dry is the fluffy active plasticized material of 15-24%;
(2), granulating working procedure
A, get fluffy active plasticized material 70-85 part that above-mentioned moisture content is 15-24%, and adding 800-1250 order superfine talcum powder 5-10 part, calcium stearate 0.5-1 part, silane coupler 3-5 part, thermoplastic resin 5-10 part, 1 part of stearic acid and acrylic acid-alternate styrene-maleic anhydride copolymer 3-5 part blending surface is handled;
B, the fluffy active plasticized material after will handling through blending surface be sent into the parallel double-screw comminutor, and gained is granular product.
Described agricultural stalk is wheat straw stalk, straw or cotton stalk.
Described synergist is a melamine.
Described thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride or polystyrene.
Utilize wood chip, rice chaff or bagasse to prepare the process of special active plasticized granule for wood-plastic composite material, comprise following operation:
(1), plasticizing operation
A, wood chip, rice chaff or bagasse are milled to 20-40 order coarse granule,
B, above-mentioned particle is sent into mixer for 100 parts, and to add concentration be NaOH 3-5 part, urea 3-5 part and synergist 1-7 part of 1.5-3%, mixing and stirring;
C, the material that stirs is sent into 25m
3General paper-making fibre digesting apparatus, temperature 90-105 ℃, boiling fusion time 3-4 hour gets fluffy active plasticized material;
Getting moisture content after D, cooling, the air dry is the fluffy active plasticized material of 15-24%;
(2), granulating working procedure
A, get fluffy active plasticized material 70-85 part that above-mentioned moisture content is 15-24%, and adding 800-1250 order superfine talcum powder 5-10 part, calcium stearate 0.5-1 part, silane coupler 3-5 part, thermoplastic resin 5-10 part, 1 part of stearic acid and acrylic acid-alternate styrene-maleic anhydride copolymer 3-5 part blending surface is handled;
B, the fluffy active plasticized material after will handling through blending surface be sent into the parallel double-screw comminutor, and gained is granular product.
Described synergist is a melamine.
Described thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride or polystyrene.
Useful technique effect of the present invention is, in technical process of the present invention, straw, wood chip, rice chaff or bagasse, the incomplete ammonification of generation, hydrolysis, esterification, make natural polymer compound part " disintegration ", part terminal hydroxy group sealing in the polymer, the degree of polymerization reduces but does not change original structure.On puffy straw, wood chip, rice chaff or the bagasse material of plastics processing and natural plants stalk, wood chip, rice chaff or bagasse physicochemical property, produce very big-difference, have-activity and the plasticity of Ding.Handle through the organic clad surface of talcum powder, drying, granulation obtain the active plasticized granule material product that can be used for preparing the wood plastic composite special use of excellent performance again.
The present invention adopts alkali process and special formulation to prepare the active plasticized plant agricultural stalk of high-performance powder particles material, can satisfy the industrial production requirement of preparation wood plastic composite.Production efficiency improves about more than 40 times than conventional method.Broken through the pretreated technical bottleneck of wood plastic composite primary raw material, the whole process of production non-environmental-pollution.Have with short production cycle, floor space is little, the characteristics of excellent product performance.
The specific embodiment
Below in conjunction with embodiment, to the description further of the present invention's do.
Embodiment 1:
The process of utilizing agricultural stalk to prepare special active plasticized granule for wood-plastic composite material comprises following operation
(1), plasticizing operation
A, with the segment of wheat straw stalk, be milled to 20-40 order coarse granule,
B, above-mentioned particle is sent into mixer for 100 parts, and add 7 parts of 5 parts in 5 parts in NaOH, urea that concentration is 1.5-3% and the melamine aqueous solution, mixing and stirring;
C, the raw material that stirs sent into belt conveyer the material that stirs is sent into 25m
3General paper-making fibre digesting apparatus, temperature 90-105 ℃, boiling fusion time 3-4 hour gets fluffy active plasticized material;
Getting moisture content after D, cooling, the air dry is the fluffy active plasticized material of 15-24%;
(2), granulating working procedure
A, get 85 parts of the fluffy active plasticized materials that above-mentioned moisture content is 15-24%, and adding 10 parts of 800-1250 order superfine talcum powders, 1 part of calcium stearate, 5 parts of silane couplers, 10 parts of polyethylene, 1 part of stearic acid and 5 parts of blending surfaces of acrylic acid-alternate styrene-maleic anhydride copolymer are handled;
B, the fluffy active plasticized material after will handling through blending surface be sent into the parallel double-screw comminutor, and gained is granular product.
Embodiment 2:
The process of utilizing agricultural stalk to prepare special active plasticized granule for wood-plastic composite material comprises following operation
(1), plasticizing operation
A, with the straw segment, be milled to 20-40 order coarse granule,
B, above-mentioned particle is sent into mixer for 100 parts, and add 1 part of 3 parts in 3 parts in NaOH, urea that concentration is 1.5-3% and melamine, mixing and stirring;
C, the raw material that stirs sent into belt conveyer the material that stirs is sent into 25m
3General paper-making fibre digesting apparatus, temperature 90-105 ℃, boiling fusion time 3-4 hour gets fluffy active plasticized material;
Getting moisture content after D, cooling, the air dry is the fluffy active plasticized material of 15-24%;
(2), granulating working procedure
A, get 70 parts of the fluffy active plasticized materials that above-mentioned moisture content is 15-24%, and adding 5 parts of 800-1250 order superfine talcum powders, 0.5 part of calcium stearate, 3 parts of silane couplers, 5 parts of polypropylene, 1 part of stearic acid and 3 parts of blending surfaces of acrylic acid-alternate styrene-maleic anhydride copolymer are handled;
B, the fluffy active plasticized material after will handling through blending surface be sent into the parallel double-screw comminutor, and gained is granular product.
Embodiment 3:
The process of utilizing wood chip to prepare special active plasticized granule for wood-plastic composite material comprises following operation
(1), plasticizing operation
A, wood chip is milled to 20-40 order coarse granule,
B, above-mentioned particle is sent into mixer for 100 parts, and add 4 parts of 4 parts in 4 parts in NaOH, urea that concentration is 1.5-3% and melamines, mixing and stirring;
C, the raw material that stirs sent into belt conveyer the material that stirs is sent into 25m
3General paper-making fibre digesting apparatus, temperature 90-105 ℃, boiling fusion time 3-4 hour gets fluffy active plasticized material;
Getting moisture content after D, cooling, the air dry is the fluffy active plasticized material of 15-24%;
(2), granulating working procedure
A, get 78 parts of the fluffy active plasticized materials that above-mentioned moisture content is 15-24%, and adding 8 parts of 800-1250 order superfine talcum powders, 7.5 parts of calcium stearates, 4 parts of silane couplers, 7.5 parts of polyvinyl chloride, 1 part of stearic acid and 4 parts of blending surfaces of acrylic acid-alternate styrene-maleic anhydride copolymer are handled;
B, the fluffy active plasticized material after will handling through blending surface be sent into the parallel double-screw comminutor, and gained is granular product.
Embodiment 4:
Can adopt rice chaff or bagasse to replace agricultural stalk.
Other operation is with embodiment 1, or embodiment 2, or embodiment 3.
Claims (7)
1. utilize agricultural stalk to prepare the process of special active plasticized granule for wood-plastic composite material, it is characterized in that: comprise following operation
(1), plasticizing operation
A, with the agricultural stalk segment and be milled to 20-40 order coarse granule,
B, above-mentioned particle is sent into mixer for 100 parts, and to add concentration be NaOH 3-5 part, urea 3-5 part and synergist 1-7 part of 1.5-3%, mixing and stirring;
C, the material that stirs is sent into 25m
3General paper-making fibre digesting apparatus, temperature 90-105 ℃, boiling fusion time 3-4 hour gets fluffy active plasticized material;
Getting moisture content after D, cooling, the air dry is the fluffy active plasticized material of 15-24%;
(2), granulating working procedure
A, get fluffy active plasticized material 70-85 part that above-mentioned moisture content is 15-24%, and adding 800-1250 order superfine talcum powder 5-10 part, calcium stearate 0.5-1 part, silane coupler 3-5 part, thermoplastic resin 5-10 part, 1 part of stearic acid and acrylic acid-alternate styrene-maleic anhydride copolymer 3-5 part blending surface is handled;
B, the fluffy active plasticized material after will handling through blending surface be sent into the parallel double-screw comminutor, and gained is granular product.
2. the process of utilizing agricultural stalk to prepare special active plasticized granule for wood-plastic composite material according to claim 1 is characterized in that: described agricultural stalk is wheat straw stalk, straw or cotton stalk.
3. the process of utilizing agricultural stalk to prepare special active plasticized granule for wood-plastic composite material according to claim 1 is characterized in that: described synergist is a melamine.
4. the process of utilizing agricultural stalk to prepare special active plasticized granule for wood-plastic composite material according to claim 1 is characterized in that: described thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride or polystyrene.
5. utilize wood chip, rice chaff or bagasse to prepare the process of special active plasticized granule for wood-plastic composite material, it is characterized in that: comprise following operation
(1), plasticizing operation
A, wood chip, rice chaff or bagasse are milled to 20-40 order coarse granule,
B, above-mentioned particle is sent into mixer for 100 parts, and to add concentration be NaOH 3-5 part, urea 3-5 part and synergist 1-7 part of 1.5-3%, mixing and stirring;
C, the material that stirs is sent into 25m
3General paper-making fibre digesting apparatus, temperature 90-105 ℃, boiling fusion time 3-4 hour gets fluffy active plasticized material;
Getting moisture content after D, cooling, the air dry is the fluffy active plasticized material of 15-24%;
(2), granulating working procedure
A, get fluffy active plasticized material 70-85 part that above-mentioned moisture content is 15-24%, and adding 800-1250 order superfine talcum powder 5-10 part, calcium stearate 0.5-1 part, silane coupler 3-5 part, thermoplastic resin 5-10 part, 1 part of stearic acid and acrylic acid-alternate styrene-maleic anhydride copolymer 3-5 part blending surface is handled;
B, the fluffy active plasticized material after will handling through blending surface be sent into the parallel double-screw comminutor, and gained is granular product.
6. the process of utilizing wood chip, rice chaff or bagasse to prepare special active plasticized granule for wood-plastic composite material according to claim 5 is characterized in that: described synergist is a melamine.
7. the process of utilizing wood chip, rice chaff or bagasse to prepare special active plasticized granule for wood-plastic composite material according to claim 5 is characterized in that: described thermoplastic resin is polyethylene, polypropylene, polyvinyl chloride or polystyrene.
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| Application Number | Priority Date | Filing Date | Title |
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| CNB2006100404655A CN100396461C (en) | 2006-05-16 | 2006-05-16 | Technical method for preparing special active plasticized granule for wood-plastic composite material utilizing agricultural stalk |
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| CNB2006100404655A CN100396461C (en) | 2006-05-16 | 2006-05-16 | Technical method for preparing special active plasticized granule for wood-plastic composite material utilizing agricultural stalk |
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| CN100396461C true CN100396461C (en) | 2008-06-25 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101029418B (en) * | 2007-02-15 | 2010-05-19 | 张人勤 | Active non-lignocellulose plant fibre, its production and use |
| CN101982504B (en) * | 2010-10-11 | 2011-11-02 | 内蒙古大学 | Method for preparing plate by utilizing polyacrylic acid and sodium salt thereof as adhesive and waste plant fiber |
| CN101967289B (en) * | 2010-10-11 | 2011-11-30 | 内蒙古大学 | Method for preparing sheets from potatoes or potato residues and discarded vegetable fibers |
| CN102352117A (en) * | 2011-08-16 | 2012-02-15 | 浙江大学 | Interfacial compatibilization method for natural fiber reinforced resin-based composite material |
| CN102626934B (en) * | 2012-04-19 | 2015-05-20 | 长春远洋特种工业材料有限公司 | Device for separating skin from stalk of straw and method for plasticizing and pelleting straw cortical fiber |
| CN103435759B (en) * | 2013-08-23 | 2015-09-02 | 江苏大学 | A kind of method of straw surface treatment and graft modification |
| CN103709773B (en) * | 2013-12-12 | 2016-02-10 | 湖北工业大学 | The preparation method of alkali urea disentanglement stalk/resin composite plates |
| CN104526811B (en) * | 2014-12-17 | 2016-04-13 | 王旭 | A kind of method of modifying of straw |
| CN105082309A (en) * | 2015-07-15 | 2015-11-25 | 百仪家具有限公司 | High-cost-performance and high-density fiberboard where paint can be directly sprayed and preparation method of high-cost-performance and high-density fiberboard |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000326314A (en) * | 1999-05-18 | 2000-11-28 | Eidai Co Ltd | Wood fiber board and its manufacture |
| CN1482166A (en) * | 2002-12-23 | 2004-03-17 | 北京欧尼克环保技术有限公司 | Wood plastic composite material and method for producing the same, method for producing panel and sheet made of wood plastic composite |
| CN1737028A (en) * | 2005-06-28 | 2006-02-22 | 茂名众和化塑有限公司 | Cellulosine plastic composite compatiblizing agent and method for making same |
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2006
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000326314A (en) * | 1999-05-18 | 2000-11-28 | Eidai Co Ltd | Wood fiber board and its manufacture |
| CN1482166A (en) * | 2002-12-23 | 2004-03-17 | 北京欧尼克环保技术有限公司 | Wood plastic composite material and method for producing the same, method for producing panel and sheet made of wood plastic composite |
| CN1737028A (en) * | 2005-06-28 | 2006-02-22 | 茂名众和化塑有限公司 | Cellulosine plastic composite compatiblizing agent and method for making same |
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