CN104761857A - Preparation method of PVC (polyvinyl chloride) wood-plastic composite - Google Patents
Preparation method of PVC (polyvinyl chloride) wood-plastic composite Download PDFInfo
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- CN104761857A CN104761857A CN201510199930.9A CN201510199930A CN104761857A CN 104761857 A CN104761857 A CN 104761857A CN 201510199930 A CN201510199930 A CN 201510199930A CN 104761857 A CN104761857 A CN 104761857A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/04—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08L27/06—Homopolymers or copolymers of vinyl chloride
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
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- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention discloses a preparation method of a PVC (polyvinyl chloride) wood-plastic composite. The preparation method comprises the steps of blending PVC, a composite heat stabilizer, an impact modifier, a lubricating agent, stuffing and wood flour, and uniformly stirring to obtain a mixed material; pouring the mixed material between two rollers of an open mill, plasticating for 3-4 minutes, taking down a material, placing and cooling to obtain a plasticated material; heating a vulcanizing press, keeping a constant temperature for 10 minutes after temperature rises to a set temperature, placing a mold between two templates, preheating for 30 minutes, putting the plasticated material into a cavity of the mold, closing the mold, putting the mold into a template of the vulcanizing press, preheating for 10 minutes again, exhausting for the first time, carrying out compression molding for two minutes after exhausting, exhausting for the second time, then carrying out compression molding for 3 minutes, cooling till lowering temperature to 900 DEG C, releasing pressure, taking out the mold, opening, taking out a manufactured plate, and naturally cooling at room temperature, thus obtaining the PVC wood-plastic composite.
Description
Technical field
The invention belongs to wood plastic composite preparing technical field, particularly a kind of preparation method of PVC wood plastic composite material.
Background technology
Containing wood powder and plastics in wood plastic composite, therefore matrix material has had the advantage of timber and plastics concurrently: 1. good processing characteristics.Wood plastic composite includes plastics and fiber, therefore, has the processing characteristics that same timber is similar, can saw, can follow closely, can dig, and use carpenter's utensil to complete, and nail-holding ability is obviously better than other synthetic materialss.Mechanical property is better than wood materials.Nail-holding ability is generally 3 times of timber, is 5 times of shaving board.2. good strength property.Wood plastic composite includes plastics, thus has good Young's modulus.In addition, due to including fiber and through fully mixing with plastics, thus there is the resistance to compression suitable with hardwood, the physical and mechanical properties such as counter-bending, and its wearing quality is obviously better than normal wood material.Surface hardness is high, is generally 2 ~ 5 times of timber.3. there is water-fast, corrosion resistant performance, long service life.Wood-plastic material and products thereof, can anti-strong acid-base, water-fast, corrosion-resistant compared with timber, and not bacterial growth, is not easily damaged by worms, not long fungi.Long service life, can reach more than 50 years.4. excellent adjustable performance.By auxiliary agent, the changes such as plastics can be polymerized, foam, solidify, modification, thus the characteristic such as density, intensity changing Wood-plastic material, can also reach anti-aging, anti-electrostatic, the particular requirement such as fire-retardant.
Because wood plastic composite has so many performance, just decide it will be widely used.1. construction industry.The floor of making by Wood Fiber Composites than superior many in low wood fibre board performance at present, not breathing, waterproof, surface aesthetic.If meet material for multilayer coextrusion section bar, internal layer adopts reclaimed materials, and outer employing virgin material, the every mechanical property of the goods made can compare favourably with hardwood products.2. the application of automobile industry.In recent years, Wood plastic boards, with its rational price, superior performance, is applied and is increased in automobile decoration material, as automobile door-plate, after put thing case, luggage case sidewall, seat plate etc.3. other industry.Except traditional industry, the Application Areas of matrix material constantly expands, started at present apply as pallet, flowerpot, handle for tool, office appliance, attack the engine components such as fast highway route marker, acoustic board and audio amplifier.
PVC price is lower, for the development of wood plastic composite provides price advantage.Polyvinyl chloride resin is simple linear polymer, has thermoplasticity.Due on molecular chain every a carbon atom just by the Cl atom that a negatively charged is stronger, thus molecular chain has stronger polarity, and the interaction force between macromolecular chain is large, hinders the Relative sliding between molecular chain.Therefore polyvinyl chloride resin macroscopically shows certain rigidity and hardness, and has good chemical resistance.
Summary of the invention
The object of the invention is the feature in conjunction with PVC and Wood-plastic material, a kind of preparation method of PVC wood plastic composite material is provided.
Concrete steps are:
(1) raw material is taken according to following mass ratio, PVC: composite thermal stabilizer: anti-impact modifier: lubricant: filler: wood powder=100:6.5 ~ 14.5:10 ~ 20:3:10 ~ 20:30 ~ 50, by raw material mixing and stirring, obtained mixture.
(2) the front roll temperature arranging mill is 1450 DEG C, rear roll temperature is also 1450 DEG C, after the temperature of mill rises to the temperature of setting, constant temperature 10 minutes, then opens mill, and the mixture that step (1) is obtained is poured between two rollers of mill, plasticate 3 ~ 4 minutes, material is taken off, places cooling, obtained material of plasticating.
(3) vulcanizing press is heated, the temperature arranging top plate is 1900 DEG C, the temperature of lower bolster is 1900 DEG C, treat that temperature rises to the temperature of setting, constant temperature 10 minutes, mould to be placed between two templates preheating 30 minutes, then mould is opened, the material of plasticating that step (2) is obtained is put into the die cavity of mould, to cover in template that mould puts it to vulcanizing press preheating again 10 minutes, carry out first time exhaust, mold pressing 2 minutes under 8 ~ 10Mpa after exhaust, carry out second time exhaust again, then mold pressing 3 minutes under 8 ~ 10Mpa, cool, treat that temperature drops to 900 DEG C, pressure release, take out mould, and open, the plate be pressed into is taken out, naturally cooling under room temperature, i.e. obtained PVC wood plastic composite material.
The model that described PVC selects is SG4, SG5, SG6 or SG7.
Described composite thermal stabilizer is containing the metal algae stablizer BaSt of the tribasic lead sulfate of 3 mass parts, the dibasic lead phosphite of 1.5 mass parts and 2 ~ 10 mass parts.
Described anti-impact modifier is chlorinatedpolyethylene.
Described lubricant is lubricant HSt.
Described filler is CaCO
3.
The length-to-diameter ratio of described wood powder is 3 ~ 5:1, and particle diameter is 35 ~ 45 orders, and through drying treatment.
The inventive method is simple to operate, is easy to large-scale promotion application, and adding by various auxiliary agent, improves hardness, the key property such as thermostability and shock resistance of rheological performance in process engineering and material.
Embodiment
embodiment:
(1) raw material is taken according to following mass ratio, PVC SG5: composite thermal stabilizer: chlorinatedpolyethylene: lubricant HSt:CaCO
3: wood powder=100:10.5:15:3:15:40, by raw material mixing and stirring, obtained mixture.
(2) the front roll temperature arranging mill is 1450 DEG C, rear roll temperature is also 1450 DEG C, after the temperature of mill rises to the temperature of setting, constant temperature 10 minutes, then opens mill, and the mixture that step (1) is obtained is poured between two rollers of mill, plasticate 3.5 minutes, material is taken off, places cooling, obtained material of plasticating.
(3) vulcanizing press is heated, the temperature arranging top plate is 1900 DEG C, the temperature of lower bolster is 1900 DEG C, treat that temperature rises to the temperature of setting, constant temperature 10 minutes, mould to be placed between two templates preheating 30 minutes, then mould is opened, the material of plasticating that step (2) is obtained is put into the die cavity of mould, to cover in template that mould puts it to vulcanizing press preheating again 10 minutes, carry out first time exhaust, mold pressing 2 minutes under 9Mpa after exhaust, carry out second time exhaust again, then mold pressing 3 minutes under 9Mpa, cool, treat that temperature drops to 900 DEG C, pressure release, take out mould, and open, the plate be pressed into is taken out, naturally cooling under room temperature, i.e. obtained PVC wood plastic composite material.
Described composite thermal stabilizer is containing the metal algae stablizer BaSt of the tribasic lead sulfate of 3 mass parts, the dibasic lead phosphite of 1.5 mass parts and 6 mass parts.
The length-to-diameter ratio of described wood powder is 4:1, and particle diameter is 40 orders, and through drying treatment.
The hardness of the wood plastic composite that the present embodiment obtains is 82.84, and shock strength is 6.233 KJ/m
2, tensile strength is 62.259 MPa, all comparatively excellent.
Claims (1)
1. a preparation method for PVC wood plastic composite material, is characterized in that concrete steps are:
(1) raw material is taken according to following mass ratio, PVC: composite thermal stabilizer: anti-impact modifier: lubricant: filler: wood powder=100:6.5 ~ 14.5:10 ~ 20:3:10 ~ 20:30 ~ 50, by raw material mixing and stirring, obtained mixture;
(2) the front roll temperature arranging mill is 1450 DEG C, rear roll temperature is also 1450 DEG C, after the temperature of mill rises to the temperature of setting, constant temperature 10 minutes, then opens mill, and the mixture that step (1) is obtained is poured between two rollers of mill, plasticate 3 ~ 4 minutes, material is taken off, places cooling, obtained material of plasticating;
(3) vulcanizing press is heated, the temperature arranging top plate is 1900 DEG C, the temperature of lower bolster is 1900 DEG C, treat that temperature rises to the temperature of setting, constant temperature 10 minutes, mould to be placed between two templates preheating 30 minutes, then mould is opened, the material of plasticating that step (2) is obtained is put into the die cavity of mould, to cover in template that mould puts it to vulcanizing press preheating again 10 minutes, carry out first time exhaust, mold pressing 2 minutes under 8 ~ 10Mpa after exhaust, carry out second time exhaust again, then mold pressing 3 minutes under 8 ~ 10Mpa, cool, treat that temperature drops to 900 DEG C, pressure release, take out mould, and open, the plate be pressed into is taken out, naturally cooling under room temperature, i.e. obtained PVC wood plastic composite material,
The model that described PVC selects is SG4, SG5, SG6 or SG7;
Described composite thermal stabilizer is containing the metal algae stablizer BaSt of the tribasic lead sulfate of 3 mass parts, the dibasic lead phosphite of 1.5 mass parts and 2 ~ 10 mass parts;
Described anti-impact modifier is chlorinatedpolyethylene;
Described lubricant is lubricant HSt;
Described filler is CaCO
3;
The length-to-diameter ratio of described wood powder is 3 ~ 5:1, and particle diameter is 35 ~ 45 orders, and through drying treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510199930.9A CN104761857A (en) | 2015-04-25 | 2015-04-25 | Preparation method of PVC (polyvinyl chloride) wood-plastic composite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510199930.9A CN104761857A (en) | 2015-04-25 | 2015-04-25 | Preparation method of PVC (polyvinyl chloride) wood-plastic composite |
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|---|---|
| CN104761857A true CN104761857A (en) | 2015-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510199930.9A Pending CN104761857A (en) | 2015-04-25 | 2015-04-25 | Preparation method of PVC (polyvinyl chloride) wood-plastic composite |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105061925A (en) * | 2015-07-31 | 2015-11-18 | 桂林理工大学 | Method for preparation of PVC based wood plastic composite material from walnut shell powder |
| CN105372155A (en) * | 2015-11-17 | 2016-03-02 | 广东工业大学 | Method for testing and evaluation of metal lubricating properties of polyvinyl chloride lubricant |
| CN109986739A (en) * | 2017-12-31 | 2019-07-09 | 宜兴市恒邦环保有限公司 | A kind of manufacture craft of PVC material product |
-
2015
- 2015-04-25 CN CN201510199930.9A patent/CN104761857A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105061925A (en) * | 2015-07-31 | 2015-11-18 | 桂林理工大学 | Method for preparation of PVC based wood plastic composite material from walnut shell powder |
| CN105372155A (en) * | 2015-11-17 | 2016-03-02 | 广东工业大学 | Method for testing and evaluation of metal lubricating properties of polyvinyl chloride lubricant |
| CN105372155B (en) * | 2015-11-17 | 2018-03-13 | 广东工业大学 | A kind of method of test evaluation polyvinyl chloride lubricants for use in processing metal lubrication performance |
| CN109986739A (en) * | 2017-12-31 | 2019-07-09 | 宜兴市恒邦环保有限公司 | A kind of manufacture craft of PVC material product |
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Application publication date: 20150708 |