CN101792610B - Formula and method for preparing polyvinyl chloride based wood-plastic composite material - Google Patents
Formula and method for preparing polyvinyl chloride based wood-plastic composite material Download PDFInfo
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- CN101792610B CN101792610B CN2009100186940A CN200910018694A CN101792610B CN 101792610 B CN101792610 B CN 101792610B CN 2009100186940 A CN2009100186940 A CN 2009100186940A CN 200910018694 A CN200910018694 A CN 200910018694A CN 101792610 B CN101792610 B CN 101792610B
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- polyvinyl chloride
- plastic composite
- composite material
- chloride based
- based wood
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Abstract
The invention relates to a formula and a method for preparing a polyvinyl chloride based wood-plastic composite material. The method comprises the following steps of: adding raw materials prepared according to the formula such as waste polyvinyl chloride granules, wood flour, carboxylated nitrile rubber, powdered nitrile rubber, a compound stabilizer, a lubricant and a flow modifier into a high-speed mixer, and stirring the raw materials for 15 to 20 minutes, wherein the mixing temperature is between 100 and 150 DEG C; adding the mixed raw materials into an extruding machine to perform extrusion, wherein the rotating speed of a main engine of the extruding machine is 40 to 60 revolutions per minute, and the rotating speed of a feeding machine is 4 to 6 revolutions per minute; and performing shaping after the extrusion. The polyvinyl chloride raw material adopted by the formula and the method is waste polyvinyl chloride, and the wood flour is worthless poplar wood flour, miscellaneous tree powder or crop straw powder, and is low in price, saves energy sources and protects the environment.
Description
Technical field
The present invention relates to a kind of polyvinyl chloride (PVC) base wood-plastic composite material and preparation method, the matrix material that makes can be used for doing floor, guardrail, finishing material etc.The invention belongs to technical field of polymer processing.
Background technology
Wood plastic composite is to be main raw material with the thermoplastics, has added wood powder, bamboo powder, shell powder, straw powder, bran powder or peanut hull meal, a kind of advanced composite material for preparing through hybrid process.Succeeding in developing of this material; the growing resource of bringing and the energy shortage problem of petroleum resources and timber and Forest products demand have been alleviated; it is the effective means of protection environment and save energy; and wood plastic composite is durable in addition,, easy-formation better than wood dimensional stability, water-absorbent is little, corrosion-resistant and characteristics such as recyclable utilization again, therefore becomes the focus of material area research.
It is base-material production with the polyvinyl chloride thermoplastics that the part wood plastic composite is arranged at present, as: the CN200810077149.0 patent, this class Wood-plastic material, because the characteristic that the inherent winter hardiness of polyvinyl chloride own is poor, shock strength is low, moulding processability is relatively poor, use the polyvinyl chloride degradation that reclaims a lot of in addition, fill a large amount of wood powder fibre-like materials again, made the performance of Wood-plastic material further worsen.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art, provide a kind of polyvinyl chloride-based, the wood plastic composite and the preparation method of cold-resistant, shock resistance, easy-formation.
For achieving the above object, the present invention has adopted following technical scheme:
The present invention utilizes polyvinyl chloride to produce wood plastic composite for base-material, and its component and parts by weight proportioning are as follows:
Polyvinyl chloride 25-30 part
Wood powder 55-65 part
Carboxyl butyronitrile glue 4-8 part
Powdered nitrile rubber glue 2-4 part
One package stabilizer 1-3 part
Lubricant 1-2 part
Flow ability modifying agent 1-3 part;
Described polyvinyl chloride is a waste polyvinyl chloride, and granularity is the 20-30 order;
Described wood powder is poplar powder, weedtree powder, cotton stalk powder, corn stalk powder, and its granularity is the 80-85 order, and water content is less than 2%;
Described stablizer is lead sulfate tribasic, dibasic lead phosphite;
Described lubricant is polyester wax, Zinic stearas, lead stearate;
Described flow ability modifying agent is isocyanate, aluminic acid ester, titanic acid ester, silane coupling agent.
The preparation method of polyvinyl chloride based wood-plastic composite material of the present invention comprises the steps:
1) will stir 100 ℃-150 ℃ of mixing temperatures 15-20 minute in the raw material adding high-speed mixer according to formulated;
2) mixed raw materials is added in the forcing machine extrude, the forcing machine engine speed is 40-60 rev/min, and the feeding machine rotating speed is 4-6 rev/min; Finalize the design after extruding.
Described forcing machine is a twin screw extruder.
Extrudate promptly gets described wood plastic composite through cooling, section then through the typing of sheet type mouth mould.
The prepared polyvinyl chloride based wood-plastic composite material of the present invention has added butadiene-acrylonitrile rubber and carboxyl butyronitrile glue, and butadiene-acrylonitrile rubber has good winter hardiness, shock resistance, and and the good consistency of PVC; Strong and wood powder or fibrous material bonding force are strong because of polarity for carboxyl butyronitrile glue, and therefore, the winter hardiness of wood plastic composite, shock resistance and intensity all are improved.
Embodiment
Further specify the present invention below in conjunction with embodiment, scope of the present invention is not subjected to the restriction of embodiment.
Embodiment 1
1,20 purpose waste polyvinyl chloride particles is cleaned, in air dry oven, dry down in 100 ℃;
2,80 purpose wood powders are dried down in 100 ℃ in air dry oven, its water content is dropped to below 2%;
3, feed composition is weighed by weight and is got the raw materials ready:
26 parts of old polyvinyl chloride particles
56 parts in poplar powder
5 parts in carboxyl butyronitrile glue
2 parts in powdered nitrile rubber glue
2 parts of lead sulfate tribasics
1 part of polyester wax
1 part of isocyanate;
4, will stir 100 ℃-150 ℃ of mixing temperatures 15-20 minute in the raw material adding high-speed mixer according to formulated;
5, mixed raw materials in the step 4 is put into twin screw extruder, carry out mixing extruding, 130 ℃ of barrel zone temperatures, 180 ℃ of head temperatures, the forcing machine engine speed is 60 rev/mins, and the feeding machine rotating speed is 6 rev/mins, and is mixing after sheet type machine head port mould extrusion sheet;
6, the sheet material in the step 5 is polyvinyl chloride based wood-plastic composite material through overcooling, cutting.
Then, after tested, the performance of polyvinyl chloride based wood-plastic composite material is: tensile strength is 27.80MPa, elongation at break 3.28%, and shock strength (18 ℃) is 6.4KJ/m
2, impact strength at low temperature (18 ℃) is 2.6KJ/m
2
Embodiment 2
Weigh by following component concentration and to get the raw materials ready, repeat the method for embodiment 1.
30 parts of old polyvinyl chloride particles
60 parts in weedtree powder
6 parts in carboxyl butyronitrile glue
3 parts in powdered nitrile rubber glue
2 parts of dibasic lead phosphites
2 parts of polyester wax
2 parts of aluminic acid esters;
After tested, the performance of polyvinyl chloride based wood-plastic composite material is: tensile strength is 28.10MPa, elongation at break 3.41%, and shock strength (18 ℃) is 6.6KJ/m
2, impact strength at low temperature (18 ℃) is 3.1KJ/m
2
Claims (8)
1. polyvinyl chloride based wood-plastic composite material, it is characterized in that: component and parts by weight proportioning are as follows:
2. polyvinyl chloride based wood-plastic composite material as claimed in claim 1 is characterized in that described polyvinyl chloride is the waste polyvinyl chloride particle, and granularity is the 20-30 order.
3. polyvinyl chloride based wood-plastic composite material as claimed in claim 1 is characterized in that described wood powder is poplar powder, weedtree powder, cotton stalk powder, corn stalk powder, and its granularity is the 80-85 order, and water content is less than 2%.
4. polyvinyl chloride based wood-plastic composite material as claimed in claim 1 is characterized in that described stablizer is lead sulfate tribasic, dibasic lead phosphite.
5. polyvinyl chloride based wood-plastic composite material as claimed in claim 1 is characterized in that described lubricant is polyester wax, Zinic stearas, lead stearate.
6. polyvinyl chloride based wood-plastic composite material as claimed in claim 1 is characterized in that described flow ability modifying agent is isocyanate, aluminic acid ester, titanic acid ester, silane coupling agent.
7. the preparation method of polyvinyl chloride based wood-plastic composite material as claimed in claim 1 is characterized in that method comprises the steps:
1) will stir 100 ℃-150 ℃ of mixing temperatures 15-20 minute in the raw material adding high-speed mixer according to formulated;
2) mixed raw materials is added in the forcing machine extrude, the forcing machine engine speed is 40-60 rev/min, and the feeding machine rotating speed is 4-6 rev/min; Finalize the design after extruding.
8. the preparation method of polyvinyl chloride based wood-plastic composite material as claimed in claim 7 is characterized in that described forcing machine is a twin screw extruder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100186940A CN101792610B (en) | 2009-09-08 | 2009-09-08 | Formula and method for preparing polyvinyl chloride based wood-plastic composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100186940A CN101792610B (en) | 2009-09-08 | 2009-09-08 | Formula and method for preparing polyvinyl chloride based wood-plastic composite material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101792610A CN101792610A (en) | 2010-08-04 |
| CN101792610B true CN101792610B (en) | 2011-10-26 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009100186940A Expired - Fee Related CN101792610B (en) | 2009-09-08 | 2009-09-08 | Formula and method for preparing polyvinyl chloride based wood-plastic composite material |
Country Status (1)
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| CN (1) | CN101792610B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102634220A (en) * | 2012-04-18 | 2012-08-15 | 德州三惠木塑科技有限公司 | Modified PVC (polyvinyl chloride) wood plastic composite material and preparation method |
| CN105504585A (en) * | 2015-12-29 | 2016-04-20 | 楷佳（天津）新材料科技有限公司 | Wood plastic material |
| CN112659431B (en) * | 2020-11-16 | 2022-10-04 | 元氏县金亨塑胶制品有限公司 | Preparation process of polyvinyl chloride-butadiene-acrylonitrile rubber composite gloves |
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2009
- 2009-09-08 CN CN2009100186940A patent/CN101792610B/en not_active Expired - Fee Related
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| CN101792610A (en) | 2010-08-04 |
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