CN101015929A - Composite wood made of rice straw polymer and its producing process - Google Patents
Composite wood made of rice straw polymer and its producing process Download PDFInfo
- Publication number
- CN101015929A CN101015929A CN 200610081191 CN200610081191A CN101015929A CN 101015929 A CN101015929 A CN 101015929A CN 200610081191 CN200610081191 CN 200610081191 CN 200610081191 A CN200610081191 A CN 200610081191A CN 101015929 A CN101015929 A CN 101015929A
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- Prior art keywords
- straw
- polymer
- composite wood
- rice
- agent
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- 239000010902 straw Substances 0.000 title claims abstract description 45
- 229920000642 polymer Polymers 0.000 title claims abstract description 24
- 239000002023 wood Substances 0.000 title claims abstract description 23
- 239000002131 composite material Substances 0.000 title claims abstract description 22
- 235000007164 Oryza sativa Nutrition 0.000 title claims description 13
- 235000009566 rice Nutrition 0.000 title claims description 13
- 238000000034 method Methods 0.000 title description 5
- 240000007594 Oryza sativa Species 0.000 title 1
- 239000000835 fiber Substances 0.000 claims abstract description 30
- 229920000578 graft copolymer Polymers 0.000 claims abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 3
- 238000002156 mixing Methods 0.000 claims description 14
- 241000209094 Oryza Species 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 239000012752 auxiliary agent Substances 0.000 claims description 8
- 238000000465 moulding Methods 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 6
- 239000000806 elastomer Substances 0.000 claims description 6
- 239000011256 inorganic filler Substances 0.000 claims description 6
- 229910003475 inorganic filler Inorganic materials 0.000 claims description 6
- 244000025254 Cannabis sativa Species 0.000 claims description 5
- 238000005469 granulation Methods 0.000 claims description 5
- 230000003179 granulation Effects 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 5
- 239000002216 antistatic agent Substances 0.000 claims description 3
- 239000002826 coolant Substances 0.000 claims description 3
- 239000003063 flame retardant Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 239000000314 lubricant Substances 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000003913 materials processing Methods 0.000 claims description 2
- 239000003381 stabilizer Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 10
- 239000004033 plastic Substances 0.000 abstract description 2
- 229920003023 plastic Polymers 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract 1
- 238000001125 extrusion Methods 0.000 description 4
- 230000008521 reorganization Effects 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 239000003999 initiator Substances 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 206010039203 Road traffic accident Diseases 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000000071 blow moulding Methods 0.000 description 1
- 239000004067 bulking agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000748 compression moulding Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 239000012760 heat stabilizer Substances 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000543 intermediate Substances 0.000 description 1
- 239000004611 light stabiliser Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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Abstract
A straw polymer composite wood is characterized in following materials (mass) that straw fiber is 45-85%, thermal plastic polymer is 15-40%, inorganic stuff is 5-15%, elastic element is 2-8%, graft polymer is 2-5%, strengthen filament is 6-10%, and agent is 2-4%. The invention can utilize waste straw to prepare composite wood to save resource and reduce pollution with wide application.
Description
Technical field
The present invention relates to a kind of composite, particularly a kind of composite wood made of rice straw polymer and preparation method thereof.
Background technology
Paddy is China's staple food crop, its output 2004 is up to 1.8 hundred million tons, the quantum of output and the paddy of straw are suitable, also be about 1.8 hundred million tons, present comprehensive utilization ratio less than 10%, straw more than 90% is used as discarded object and burns, and the process of destroying by fire pollutes environment, even causes the traffic accident and the airline flight grounding.From national agriculture-countryside-farmer's policy, be badly in need of finding a way out to straw.On the other hand, China's Forest Resources is further deficient, and wood-processing industry gets into a difficult position, the wooden resource that active demand is new.
Summary of the invention
The purpose of this invention is to provide composite wood made of rice straw polymer and preparation method thereof, prepare a kind of composite wood, to save the forest reserves and to reduce environmental pollution to utilize discarded straw.The objective of the invention is to realize by following technical scheme.The present invention is a kind of composite wood made of rice straw polymer, it is characterized in that being made by the materials processing that comprises following ratio by weight:
Rice-straw fibre 45 ~ 85
Thermal plasticity high polymer 15 ~ 40
Inorganic filler 5 ~ 15
Strengthen long fibre 6 ~ 10
Described auxiliary agent comprises one or more of following composition: chain rupture cooling agent, inside and outside lubricant agent, optothermal stabilizer, anticorrisive agent, fire retardant, antistatic agent.
The present invention also comprises the preparation method of described composite wood made of rice straw polymer, it is characterized in that may further comprise the steps:
1) each component that get the raw materials ready, will fill a prescription required is got all the ready; Each component of getting all the ready is tentatively mixed;
2) mixing, moulding, each component of tentatively mixing is mixing in screw extruder, exhaust, plasticizing are extruded through casement granulation or supercharging; When supercharging was extruded, the head melt pressure was for being not less than 30Mpa, and cold-extruded goes out moulding.
The preparation method of described rice-straw fibre comprises:
1) chopping will comprise the whole strain straw chopping of grass stalk and straw leaf, and logical steam is softening;
2) mill fiber; Softening straw section is worn into the fiber of 1 to 20 millimeters long with grinding machine;
The present invention is a kind of multi-component compound system, mainly uses in addition additive mixture of rice-straw fibre and high polymer, makes wooden reorganization through processing, forms composite wood.In the component of wooden reorganization: grass fiber is as wooden dose; High polymer is as adhesive; Inorganic filler is as rigid particles; Elastomer is as flexibilizer; Graft copolymer is as bulking agent; Long fibre is as reinforcing material.Described auxiliary agent comprises one or more combinations of following composition: as this area chain rupture cooling agent, inside and outside lubricant agent, light/heat stabilizer, mould inhibitor, fire retardant, antistatic agent commonly used.These materials mix in high-speed mixer, homogenizing, and are mixing, exhaust and extrude and make product.
Mixing, exhaust be before the flow process of extrusion molding with the moisture in the grass fiber (giving in the plastics processing process with initiator solution and injecting), flashed out, finish wooden plasticizing or granulation then.
The straw of institute's granulation, high polymer composite wood pellet, time processing of available moulding method two comprises extrusion molding, injection moulding, blow molding, compression molding etc.
In sum, the present invention can utilize discarded straw to prepare a kind of composite wood, saves the forest reserves and reduces environmental pollution.Composite wood of the present invention is applicable to fields such as life, building, chemical industry, environmental protection, logistics, transportation.
Description of drawings
Fig. 1 is the processing schematic diagram of twin-screw high-speed mixing extruder.
The specific embodiment
1, prepare below the material of ratio by weight:
Rice-straw fibre 65
Thermal plasticity high polymer 30
Inorganic filler 10
Elastomer 5
Strengthen long fibre 8
2, its preparation method may further comprise the steps:
1) each component that get the raw materials ready, will fill a prescription required is got all the ready; Each component of getting all the ready is tentatively mixed;
2) mixing, moulding is carried out mixing, exhaust, plasticizing with each component of tentatively mixing, through casement granulation or supercharging extrusion molding in twin-screw high-speed mixing extruder 1; As Fig. 1, material is sent into from hopper 1-3, delivers among the machine barrel 1-6 through drawing-in device 1-4, machine barrel mouth 1-5; Has twin-screw 1-8 among the machine barrel 1-6, twin-screw 1-8 drives rotation by the drive motors 1-1 in the extrusion device 1, case speed change 1-2, material is mixing, plasticizing, from each exhaust outlet 1-7 exhaust, material is transported to left in the storage cylinder 2-3 that has blowning installation 2-5 that stores up in the cylinder assembly 2, plunger 2-2 in oil cylinder 2-1 releases material downwards, through shunting core 2-4, a mouthful mould 2-6 parison 2-7 is sent, with the mould 3-1 extruded article on the matched moulds assembly 3-2 of being positioned in the mold closing mechanism 3.When the supercharging cold-extruded went out moulding, the melt pressure of twin-screw 1-8 termination was 30Mpa; Finish the wooden reorganization of rice-straw fibre and high polymer, produce the sheet material and the section bar of composite wood.Because rice-straw fibre is the most loose string of structure in the non-wood plant fibre, so the present invention can be effectively applied to all non-wood plant fibres.
3, be a kind of preparation method of rice-straw fibre below, may further comprise the steps:
1) chopping will comprise that the whole strain straw of grass stalk and straw leaf is cut into the section of 3-4 centimeter length; Also the straw section can be placed on and pass to steam in the container about 15 minutes, make it softening;
2) mill fiber; Softening straw section is worn into the fiber of 1 to 20 millimeters long with grinding machine;
Also fiber can be carried out preplasticizing and handle, it is moistening with it to spray into initiator solution commonly used on rice-straw fibre, places then and holds jar, makes to produce a large amount of intermediates in rice-straw fibre, makes its preplasticizing.
1, prepare below the material of ratio by weight:
Rice-straw fibre 85
Thermal plasticity high polymer 40
Inorganic filler 15
Elastomer 8
Graft copolymer 5
Strengthen long fibre 10
2, its preparation method is identical with embodiment 1.
1, prepare below the material of ratio by weight:
Rice-straw fibre 45
Thermal plasticity high polymer 15
Inorganic filler 5
Strengthen long fibre 6
2, its preparation method is identical with embodiment 1.
Claims (4)
1. composite wood made of rice straw polymer is characterized in that being made by the materials processing that comprises following ratio by weight:
Rice-straw fibre 45～85,
Thermal plasticity high polymer 15～40,
Inorganic filler 5～15,
Elastomer 2～8,
Graft copolymer 2～5,
Strengthen long fibre 6～10,
Auxiliary agent 2～4.
2, according to the described composite wood made of rice straw polymer of claim 1, it is characterized in that: described auxiliary agent comprises one or more of following composition: chain rupture cooling agent, inside and outside lubricant agent, optothermal stabilizer, anticorrisive agent, fire retardant, antistatic agent.
3. the preparation method of composite wood made of rice straw polymer according to claim 1 is characterized in that may further comprise the steps:
1) each component that get the raw materials ready, will fill a prescription required is got all the ready; Each component of getting all the ready is tentatively mixed;
2) mixing, moulding, each component of tentatively mixing is mixing in extruder, exhaust, plasticizing are extruded through casement granulation or supercharging, and under head melt pressure 30Mpa situation, cold-extruded goes out moulding.
4. the preparation method of composite wood made of rice straw polymer according to claim 1, it is characterized in that: the preparation method of described rice-straw fibre comprises:
1) chopping will comprise the whole strain straw chopping of grass stalk and straw leaf, and steam is softening;
2) grind fiber, softening straw section is worn into the fiber of 1 to 20 millimeters long with grinding machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610081191 CN101015929A (en) | 2006-05-24 | 2006-05-24 | Composite wood made of rice straw polymer and its producing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610081191 CN101015929A (en) | 2006-05-24 | 2006-05-24 | Composite wood made of rice straw polymer and its producing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101015929A true CN101015929A (en) | 2007-08-15 |
Family
ID=38725228
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200610081191 Pending CN101015929A (en) | 2006-05-24 | 2006-05-24 | Composite wood made of rice straw polymer and its producing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101015929A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102702763A (en) * | 2012-05-22 | 2012-10-03 | 宁国惠云塑木新材料有限公司 | Method for producing wood-plastic material by processing rice straws |
| US8809406B2 (en) | 2006-01-20 | 2014-08-19 | Material Innovations Llc | Carpet waste composite |
| US10875281B2 (en) | 2008-12-19 | 2020-12-29 | Fiber Composites Llc | Wood-plastic composites utilizing ionomer capstocks and methods of manufacture |
| US11572646B2 (en) | 2020-11-18 | 2023-02-07 | Material Innovations Llc | Composite building materials and methods of manufacture |
| US12172421B2 (en) | 2020-11-18 | 2024-12-24 | Rise Building Products Llc | Composite building materials and methods of manufacture |
-
2006
- 2006-05-24 CN CN 200610081191 patent/CN101015929A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8809406B2 (en) | 2006-01-20 | 2014-08-19 | Material Innovations Llc | Carpet waste composite |
| US9637920B2 (en) | 2006-01-20 | 2017-05-02 | Material Innovations Llc | Carpet waste composite |
| US10294666B2 (en) | 2006-01-20 | 2019-05-21 | Material Innovations Llc | Carpet waste composite |
| US10822798B2 (en) | 2006-01-20 | 2020-11-03 | Material Innovations Llc | Carpet waste composite |
| US11773592B2 (en) | 2006-01-20 | 2023-10-03 | Material Innovations Llc | Carpet waste composite |
| US10875281B2 (en) | 2008-12-19 | 2020-12-29 | Fiber Composites Llc | Wood-plastic composites utilizing ionomer capstocks and methods of manufacture |
| CN102702763A (en) * | 2012-05-22 | 2012-10-03 | 宁国惠云塑木新材料有限公司 | Method for producing wood-plastic material by processing rice straws |
| US11572646B2 (en) | 2020-11-18 | 2023-02-07 | Material Innovations Llc | Composite building materials and methods of manufacture |
| US12172421B2 (en) | 2020-11-18 | 2024-12-24 | Rise Building Products Llc | Composite building materials and methods of manufacture |
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| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |