CN105504633A - Wood plastic composite material and preparation method thereof - Google Patents
Wood plastic composite material and preparation method thereof Download PDFInfo
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- CN105504633A CN105504633A CN201410550152.9A CN201410550152A CN105504633A CN 105504633 A CN105504633 A CN 105504633A CN 201410550152 A CN201410550152 A CN 201410550152A CN 105504633 A CN105504633 A CN 105504633A
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- stalk powder
- wood plastic
- plastic composite
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- cotton stalk
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- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
The invention discloses a wood plastic composite material, which is prepared from grafted cotton stalk powder and PVA through a coupling agent method. The invention also discloses a preparation method of the wood plastic composite material. The preparation method comprises the following steps: preprocessing cotton stalk powder, carrying out copolymerization and grafting, mixing the processed cotton stalk powder with PVC, and blending the mixture at a high temperature to obtain the wood plastic composite material. The wood plastic composite material can be used to produce various wood plastic floor, door, tray, and the like, and has an excellent comprehensive performance, and at the same time, the production cost is reduced largely.
Description
Technical field
The invention belongs to technical field of composite materials, be specifically related to a kind of wood plastic composite, the invention still further relates to the preparation method of this wood plastic composite.
Background technology
Wood plastic composite be with natural phant stalk for raw material, add the environmentally friendly novel material of one that some processing aids and polyvinyl chloride resin are composited, in recent years, with it, there is the distinctive woodiness touch of log, good mechanical property, good stability of the dimension, water tolerance, wear resistance, chemical resistance are excellent, are not afraid of and damage by worms, be easy to painted, maintenance requirement is low, long service life, is easy to shaping, can numerous excellent properties such as secondary processing, cause the favor of consumers in general.
Vegetable fibre is applied to wood plastic composite, be conducive to environmental protection and agricultural resource comprehensive utilization, simultaneously, plant cellulose add the intensity that itself can improve matrix material, but the structure of cotton stalk fiber makes its surface have stronger wetting ability, cause the moisture in its easy absorption environment and other impurity, thus form the weak boundary layer of fiber surface and plastics when wood plastics composite, reduce the interface binding power of matrix material.Secondly, a large amount of hydroxyls forms intermolecular hydrogen bonding on cotton stalk fiber surface, makes cotton stalk powder be not easy to disperse in non-polar polymer matrix.In the preparation process of matrix material, fiber is tending towards mutual gathering, forms fibrous mass, bundle, causes the probability of stress concentration and generation defect to increase, causes the decline of material mechanical performance.Therefore, the interface binding power how effectively improving plant fibre components and resin matrix in wood plastic composite becomes the emphasis that wood plastic composite is studied, common methods has and to process plant fiber stuffing or to carry out modification to resin matrix, thus improve the interface compatibility of two-phase, make wood plastic composite show better over-all properties, also easy wood plastic composite is carried out foaming etc. suitability for industrialized production.
Summary of the invention
The object of this invention is to provide a kind of wood plastic composite and preparation method thereof, when solution utilizes cotton stalk as fiberfill fibers, the problem of product over-all properties difference.
The technical solution adopted in the present invention is, a kind of wood plastic composite and preparation method thereof, is characterized in that, concrete steps are as follows:
Step 1, take appropriate cotton stalk powder and be placed in electric heating constant-temperature blowing drying box successive drying, drying temperature is set to 95 DEG C ~ 115 DEG C, every within one hour, to take out and after weighing, to put back to loft drier rapidly, until weighing result constant weight;
Step 2, by cotton for step 1 gained stalk powder in concentration be 2% NaOH solution in soak 36h ~ 48h, be washed to neutrality with distilled water, by the cotton stalk powder dried for standby after washing;
Step 3, the cotton stalk powder of step 2 gained is put into the three-necked bottle containing appropriate amount of deionized water, stir 10min ~ 15min, pass into nitrogen 5min ~ 10min, slowly add the Potassium Persulphate of 0.6% ~ 1.5%, continue to stir 30min ~ 60min, add methyl methacrylate reaction 60min ~ 90min, suction filtration, dries;
Step 4, in homogenizer, add the cotton stalk powder of step 3 gained, add the coupling agent solution after dehydrated alcohol dilution after warming while stirring to 85 DEG C ~ 90 DEG C and stir 30min ~ 60min, discharging 100 DEG C ~ 110 DEG C time;
Step 5, cotton for step 4 gained stalk powder mixed with PVC, softening agent, thermo-stabilizer and other processing aids in kneader be incorporated in 110 DEG C ~ 120 DEG C dischargings;
Step 6, by step 5 gained batch mixing at 170 DEG C ~ 200 DEG C with after two roller mill mixing 2h ~ 4h, get product.
In step 1, described constant weight is double weight difference is 5% ~ 10%.
In step 5, described softening agent is calcium stearate, and thermo-stabilizer is lead salt stabilizer.
Wood plastic composite advantage of the present invention is:
The present invention is widely used, and can be used for all kinds of wood-plastic floor board, door and pallet etc.; Utilize the wood plastic composite that cotton stalk powder and PVC adopt modification by coupling to prepare as starting material, excellent combination property, also greatly reduces production cost simultaneously.
Accompanying drawing explanation
Fig. 1 is the preparation flow figure of a kind of wood plastic composite of the present invention.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment 1
Step 1, take the cotton stalk powder of 3g and be placed in electric heating constant-temperature blowing drying box successive drying, drying temperature is set to 95 DEG C, every within one hour, to take out and after weighing, to put back to loft drier rapidly, until weighing result constant weight;
Step 2, by cotton for step 1 gained stalk powder in 10mL concentration be 2% NaOH solution in soak 36h, be washed to neutrality with distilled water, by the cotton stalk powder dried for standby after washing;
Step 3, the cotton stalk powder of step 2 gained is put into the three-necked bottle containing 50mL deionized water, stir 15min, pass into nitrogen 5min, slowly add the potassium persulfate solution that 2mL concentration is 1.5%, continue to stir 60min, add methyl methacrylate reaction 90min, suction filtration, dries;
Step 4, in homogenizer, add the cotton stalk powder of step 3 gained, add the coupling agent solution after dehydrated alcohol dilution after warming while stirring to 85 DEG C and stir 60min, discharging 110 DEG C time;
Step 5, by cotton for step 4 gained stalk powder and 7gPVC, and softening agent, thermo-stabilizer and other processing aids are mixed in kneader is incorporated in 120 DEG C of dischargings;
Step 6, by step 5 gained batch mixing at 170 DEG C with after two roller mill mixing 4h, get product.
Embodiment 2
Step 1, take the cotton stalk powder of 5g and be placed in electric heating constant-temperature blowing drying box successive drying, drying temperature is set to 105 DEG C, every within one hour, to take out and after weighing, to put back to loft drier rapidly, until weighing result constant weight;
Step 2, by cotton for step 1 gained stalk powder in 10mL concentration be 2% NaOH solution in soak 48h, be washed to neutrality with distilled water, by the cotton stalk powder dried for standby after washing;
Step 3, the cotton stalk powder of step 2 gained is put into the three-necked bottle containing 50mL deionized water, stir 10min, pass into nitrogen 10min, slowly add the Potassium Persulphate that 2mL concentration is 0.6%, continue to stir 30min, add methyl methacrylate reaction 60min, suction filtration, dries;
Step 4, in homogenizer, add the cotton stalk powder of step 3 gained, add the coupling agent solution after dehydrated alcohol dilution after warming while stirring to 90 DEG C and stir 30min, discharging 100 DEG C time;
Step 5, by cotton for step 4 gained stalk powder and 5gPVC, and softening agent, thermo-stabilizer and other processing aids are mixed in kneader is incorporated in 120 DEG C of dischargings;
Step 6, by step 5 gained batch mixing at 200 DEG C with after two roller mill mixing 2h, get product.
Embodiment 3
Step 1, take the cotton stalk powder of 4g and be placed in electric heating constant-temperature blowing drying box successive drying, drying temperature is set to 115 DEG C, every within one hour, to take out and after weighing, to put back to loft drier rapidly, until weighing result constant weight;
Step 2, by cotton for step 1 gained stalk powder in 10mL concentration be 2% NaOH solution in soak 36h, be washed to neutrality with distilled water, by the cotton stalk powder dried for standby after washing;
Step 3, the cotton stalk powder of step 2 gained is put into the three-necked bottle containing appropriate amount of deionized water, stir 12min, pass into nitrogen 7min, slowly add the Potassium Persulphate that 2mL concentration is 1.0%, continue to stir 40min, add methyl methacrylate reaction 60min, suction filtration, dries;
Step 4, in homogenizer, add the cotton stalk powder of step 3 gained, add the coupling agent solution after dehydrated alcohol dilution after warming while stirring to 85 DEG C and stir 40min, discharging 110 DEG C time;
Step 5, by cotton for step 4 gained stalk powder and 6gPVC, and softening agent, thermo-stabilizer and other processing aids are mixed in kneader is incorporated in 110 DEG C of dischargings;
Step 6, by step 5 gained batch mixing at 180 DEG C with after two roller mill mixing 3h, get product.
Claims (3)
1. wood plastic composite and preparation method thereof, is characterized in that, concrete steps are as follows:
Step 1, take appropriate cotton stalk powder and be placed in electric heating constant-temperature blowing drying box successive drying, drying temperature is set to 95 DEG C ~ 115 DEG C, every within one hour, to take out and after weighing, to put back to loft drier rapidly, until weighing result constant weight;
Step 2, by cotton for step 1 gained stalk powder in concentration be 2% NaOH solution in soak 36h ~ 48h, be washed to neutrality with distilled water, by the cotton stalk powder dried for standby after washing;
Step 3, the cotton stalk powder of step 2 gained is put into the three-necked bottle containing appropriate amount of deionized water, stir 10min ~ 15min, pass into nitrogen 5min ~ 10min, slowly add the Potassium Persulphate of 0.6% ~ 1.5%, continue to stir 30min ~ 60min, add methyl methacrylate reaction 60min ~ 90min, suction filtration, dries;
Step 4, in homogenizer, add the cotton stalk powder of step 3 gained, add the coupling agent solution after dehydrated alcohol dilution after warming while stirring to 85 DEG C ~ 90 DEG C and stir 30min ~ 60min, discharging 100 DEG C ~ 110 DEG C time;
Step 5, cotton for step 4 gained stalk powder mixed with PVC, softening agent, thermo-stabilizer and other processing aids in kneader be incorporated in 110 DEG C ~ 120 DEG C dischargings;
Step 6, by step 5 gained batch mixing at 170 DEG C ~ 200 DEG C with after two roller mill mixing 2h ~ 4h, get product.
2. according to wood plastic composite a kind of described in claim 1 and preparation method thereof, it is characterized in that, in step 1, described constant weight is double weight difference is 5% ~ 10%.
3. according to wood plastic composite a kind of described in claim 1 and preparation method thereof, it is characterized in that, in step 5, described softening agent is calcium stearate, and thermo-stabilizer is lead salt stabilizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550152.9A CN105504633A (en) | 2014-10-15 | 2014-10-15 | Wood plastic composite material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410550152.9A CN105504633A (en) | 2014-10-15 | 2014-10-15 | Wood plastic composite material and preparation method thereof |
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| CN105504633A true CN105504633A (en) | 2016-04-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410550152.9A Pending CN105504633A (en) | 2014-10-15 | 2014-10-15 | Wood plastic composite material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106280183A (en) * | 2016-08-24 | 2017-01-04 | 四川梅塞尔科技有限公司 | The preparation method of insulation macromolecular material |
| CN106633511A (en) * | 2016-12-12 | 2017-05-10 | 芜湖市天雄新材料科技有限公司 | Preparation method of polyvinyl chloride wood-plastic composite material granules for profiles |
| CN107057238A (en) * | 2017-05-31 | 2017-08-18 | 合肥创沃科技有限公司 | A kind of preparation method of stalk fibre degradable foam materials |
| CN107163200A (en) * | 2017-06-01 | 2017-09-15 | 合肥创沃科技有限公司 | A kind of method of modifying of stalk fibre |
-
2014
- 2014-10-15 CN CN201410550152.9A patent/CN105504633A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106280183A (en) * | 2016-08-24 | 2017-01-04 | 四川梅塞尔科技有限公司 | The preparation method of insulation macromolecular material |
| CN106280183B (en) * | 2016-08-24 | 2018-12-04 | 四川梅塞尔科技有限公司 | The preparation method of insulation high molecular material |
| CN106633511A (en) * | 2016-12-12 | 2017-05-10 | 芜湖市天雄新材料科技有限公司 | Preparation method of polyvinyl chloride wood-plastic composite material granules for profiles |
| CN107057238A (en) * | 2017-05-31 | 2017-08-18 | 合肥创沃科技有限公司 | A kind of preparation method of stalk fibre degradable foam materials |
| CN107163200A (en) * | 2017-06-01 | 2017-09-15 | 合肥创沃科技有限公司 | A kind of method of modifying of stalk fibre |
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Application publication date: 20160420 |