CN107236204A - A kind of preparation technology of PVC wood plastic composite decorating board - Google Patents
A kind of preparation technology of PVC wood plastic composite decorating board Download PDFInfo
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- CN107236204A CN107236204A CN201710313577.1A CN201710313577A CN107236204A CN 107236204 A CN107236204 A CN 107236204A CN 201710313577 A CN201710313577 A CN 201710313577A CN 107236204 A CN107236204 A CN 107236204A
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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
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/08—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing carbon dioxide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/06—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent
- C08J9/10—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a chemical blowing agent developing nitrogen, the blowing agent being a compound containing a nitrogen-to-nitrogen bond
- C08J9/102—Azo-compounds
- C08J9/103—Azodicarbonamide
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/02—CO2-releasing, e.g. NaHCO3 and citric acid
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2203/00—Foams characterized by the expanding agent
- C08J2203/04—N2 releasing, ex azodicarbonamide or nitroso compound
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2327/00—Characterised by the use 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; Derivatives of such polymers
- C08J2327/02—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use 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; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/06—Homopolymers or copolymers of vinyl chloride
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
- C08K2003/3045—Sulfates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
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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
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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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
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Abstract
The invention discloses a kind of preparation technology of PVC wood plastic composite decorating board, comprise the following steps：（1）Wood powder drying process,（2）Wood powder modification,（3）Mixing extrusion.The present invention to raw material by being modified, technique is optimized, improve the overall characteristic of PVC wood plastic composite decorating board well, the characteristics such as its anti-flammability, wearability, bending strength, plate face nail-holding ability are improved well, reduce its expansion rate of water absorption, comprehensive use value is high, and the market competitiveness is strong.
Description
Technical field
The invention belongs to materials processing technology field, and in particular to a kind of preparation technology of PVC wood plastic composite decorating board.
Background technology
Wood plastic composite is a kind of Novel environment-friendlymaterial material, the wooden powder or wood-fibred using plant as reinforcer,
Mixed after pretreatment with thermoplastic (a kind or a variety of), while add some other auxiliary agents, by hot pressing, extrusion,
The composite that the modes such as injection are processed.Wood plastic composite has had both the double grading of timber and plastics, can process system
Into multiple color, texture and processing characteristics are similar to timber, while also having, stable chemical performance, intensity is high, pest-resistant bacterium effect
Preferably, it is a kind of preferable substitute materials for wood the advantages of recoverable.Excellent combination property makes wood plastic composite have extensively
General application field, such as furniture, packaging, automobile, aviation, communications and transportation, sports goods, leisure goods, ornament materials and daily
Life appliance etc..
The density of PVC plastics is larger, and the extrusion process in process makes wooden powder densification, and obtained wood moulding is answered
Condensation material density is larger, usually 1.2~1.4 g/cm3, larger density make its indoors decoration material field be restricted
Wood plastic composite foaming can reduce composite density, reduce production cost, at the same the presence of abscess can passivation crack tip,
Crack extesion is prevented, improves the shock resistance and toughness of composite, the use field of wood plastic composite is expanded, improved
Its market value.Although the foam process of wood plastic composite is varied, the influence factor of Wood-plastic-foamed composite compared with
Many, the improvement of foaming effect still has to be optimized.
The content of the invention
The purpose of the present invention is that there is provided a kind of preparation technology of PVC wood plastic composite decorating board the problem of being directed to existing.
The present invention is achieved by the following technical solutions：
A kind of preparation technology of PVC wood plastic composite decorating board, comprises the following steps：
（1）Wood powder drying process：
First rubber wood timber wood powder is dried processing, it is 4 ~ 6% to dry to overall water content, then screened to mesh number for 40 ~
60 mesh are standby；
（2）Wood powder modification：
A. by step（1）Rubber wood timber wood powder after processing, which is put into steam blasting machine, carries out Steam explosion treatment, again will after taking-up
It is immersed in 40 ~ 50min of immersion treatment in the silane coupler aqueous solution, is finally drawn off standby after drying；
B. will operate a processing after rubber wood timber wood powder be immersed in modified aqueous solution, filtered out after 25 ~ 30min of immersion treatment it is standby,
Each material and its percentage by weight in described modified aqueous solution are：5 ~ 8% nano titanium oxides, 0.8 ~ 1.5% sodium hydroxide,
Surplus is water；
（3）Mixing extrusion：
By step（2）Rubber wood timber wood powder after processing is with polyvinyl chloride, foaming agent, dispersant, filler according to mass ratio 40 ~ 45：
55~60：7~12：3~5：13 ~ 17 are mixed, then by mixed material be put into mixing process 35 in high speed muller ~
40min, the material then kneaded again is put into dual-screw pelletizer and granulated, and the material granulated finally is put into conical double ribbon
Extrusion molding in bar extruder.
Further, step（1）Described in drying temperature be 55 ~ 60 DEG C.
Further, step（2）When operating the Steam explosion treatment described in a, control pressure is 2.0 ~ 2.3MPa, control
Temperature is 145 ~ 150 DEG C, and heat-insulation pressure keeping unloads warm release again after handling 18 ~ 22s.
Further, step（2）The mass fraction of silane coupler is in the silane coupler aqueous solution described in operation a
8~10%。
Further, step（2）Also apply the ultrasonic wave that frequency is 40 ~ 45KHz when operating the immersion treatment described in b to enter
Row aid in treatment.
Further, step（2）The granular size for operating the nano titanium oxide described in b is 20 ~ 50nm.
Further, step（3）Described in foaming agent be AC foaming agents, zinc oxide foaming agent, sodium acid carbonate foaming agent
In any one.
Further, step（3）Described in dispersant be microcrystalline wax, magnesium stearate, glyceryl tristearate in
Any one.
Further, step（3）Described in filler be talcum powder, barium sulfate, calcium carbonate in any one.
The final response of foaming PVC wood-plastic composite panel and the selection of material composition, the proportioning of content, foaming processing technology
Etc. closely related, therefore it is varied to improve the method for its performance.Preparation technology of the present invention is related to for above-mentioned several factors
And, wherein special modification first has been carried out to the rubber wood timber wood powder of selection,
Rubber wood timber wood powder is put into steam blasting machine and carries out explosion treatment, the effective loose interior tissue knot of wood powder fiber
Structure, improves the activity of fiber, enhances the porosity and surface area of fiber, is then immersed in the silane coupler aqueous solution again
In, silane surface modified processing is carried out to wood powder fiber, the modified effect of the wood powder fiber after Steam explosion treatment is more
Good, quality is more stable, and wood powder fiber is put into modified aqueous solution to be modified in processing, modified aqueous solution be to contain again afterwards
There is the micro alkaline solution of nano titanium oxide, wherein the wood powder fiber that the nano titanium oxide added can be penetrated into after processing is empty
In gap, strengthen the characteristics such as bulk strength, corrosion resistant, the heatproof of wood powder fiber, while in the silane coupled of wood powder fiber surface connection
Silanol groups are formed after agent hydrolysis, dehydration can be carried out with nano titanium oxide surface, realizes that chemical bond is connected, further carries
Fixed effect and overall permanence between the two is risen, the wood powder after modification is high with PVC compatibilities, and wood powder itself
The characteristics such as intensity are also improved very well, while improving scattered, filling stabilization of the nano titanium oxide in decorative panel again
Property, improve when tradition foaming is handled under the impact of foaming internal force, pellet disperses uneven, wood fibre is easily become by impact
Shape, causes cell size, Density inhomogeneity, and then the problem of influence overall permanence；Again reasonably combined afterwards itself and polychlorostyrene second
The ratio that alkene, foaming agent, dispersant, filler are used, has been effectively ensured the overall characteristic of entirety.
The present invention has advantages below compared with prior art：
The present invention to raw material by being modified, technique is optimized, and the synthesis of PVC wood plastic composite decorating board is improved well
Characteristic, improves the characteristics such as its anti-flammability, wearability, bending strength, plate face nail-holding ability, reduces its water swelling well
Rate, comprehensive use value is high, and the market competitiveness is strong.
Embodiment
Embodiment 1
A kind of preparation technology of PVC wood plastic composite decorating board, comprises the following steps：
（1）Wood powder drying process：
First rubber wood timber wood powder is dried processing, it is 4% to dry to overall water content, it is 40 ~ 60 then to be screened to mesh number
Mesh is standby；
（2）Wood powder modification：
A. by step（1）Rubber wood timber wood powder after processing, which is put into steam blasting machine, carries out Steam explosion treatment, again will after taking-up
It is immersed in immersion treatment 40min in the silane coupler aqueous solution, is finally drawn off standby after drying；
B. the rubber wood timber wood powder after a processing will be operated to be immersed in modified aqueous solution, standby, institute is filtered out after immersion treatment 25min
Each material and its percentage by weight in the modified aqueous solution stated are：5% nano titanium oxide, 0.8% sodium hydroxide, surplus is
Water；
（3）Mixing extrusion：
By step（2）Rubber wood timber wood powder after processing is with polyvinyl chloride, foaming agent, dispersant, filler according to mass ratio 40：55：
7：3：13 are mixed, and mixed material then is put into mixing process 35min in high speed muller, then kneaded again
Material is put into dual-screw pelletizer and granulated, finally extrusion molding by the material granulated input conical double screw extruder i.e.
Can.
Further, step（1）Described in drying temperature be 55 DEG C.
Further, step（2）When operating the Steam explosion treatment described in a, control pressure is 2.0MPa, controls temperature
For 145 DEG C, heat-insulation pressure keeping unloads warm release again after handling 18s.
Further, step（2）The mass fraction of silane coupler is in the silane coupler aqueous solution described in operation a
8%。
Further, step（2）Also apply the ultrasonic wave that frequency is 40KHz when operating the immersion treatment described in b to carry out
Aid in treatment.
Further, step（2）The granular size for operating the nano titanium oxide described in b is 20 ~ 50nm.
Further, step（3）Described in foaming agent be AC foaming agents.
Further, step（3）Described in dispersant be microcrystalline wax.
Further, step（3）Described in filler be talcum powder.
Embodiment 2
A kind of preparation technology of PVC wood plastic composite decorating board, comprises the following steps：
（1）Wood powder drying process：
First rubber wood timber wood powder is dried processing, it is 5% to dry to overall water content, it is 40 ~ 60 then to be screened to mesh number
Mesh is standby；
（2）Wood powder modification：
A. by step（1）Rubber wood timber wood powder after processing, which is put into steam blasting machine, carries out Steam explosion treatment, again will after taking-up
It is immersed in immersion treatment 45min in the silane coupler aqueous solution, is finally drawn off standby after drying；
B. the rubber wood timber wood powder after a processing will be operated to be immersed in modified aqueous solution, standby, institute is filtered out after immersion treatment 28min
Each material and its percentage by weight in the modified aqueous solution stated are：7% nano titanium oxide, 1.2% sodium hydroxide, surplus is
Water；
（3）Mixing extrusion：
By step（2）Rubber wood timber wood powder after processing is with polyvinyl chloride, foaming agent, dispersant, filler according to mass ratio 43：58：
11：4：15 are mixed, and mixed material then is put into mixing process 38min in high speed muller, then kneaded again
Material be put into dual-screw pelletizer granulate, finally by material granulate input conical double screw extruder in extrusion molding
.
Further, step（1）Described in drying temperature be 58 DEG C.
Further, step（2）When operating the Steam explosion treatment described in a, control pressure is 2.2MPa, controls temperature
For 148 DEG C, heat-insulation pressure keeping unloads warm release again after handling 20s.
Further, step（2）The mass fraction of silane coupler is in the silane coupler aqueous solution described in operation a
9%。
Further, step（2）Also apply the ultrasonic wave that frequency is 42KHz when operating the immersion treatment described in b to carry out
Aid in treatment.
Further, step（2）The granular size for operating the nano titanium oxide described in b is 20 ~ 50nm.
Further, step（3）Described in foaming agent be zinc oxide foaming agent.
Further, step（3）Described in dispersant be magnesium stearate.
Further, step（3）Described in filler be barium sulfate.
Embodiment 3
A kind of preparation technology of PVC wood plastic composite decorating board, comprises the following steps：
（1）Wood powder drying process：
First rubber wood timber wood powder is dried processing, it is 6% to dry to overall water content, it is 40 ~ 60 then to be screened to mesh number
Mesh is standby；
（2）Wood powder modification：
A. by step（1）Rubber wood timber wood powder after processing, which is put into steam blasting machine, carries out Steam explosion treatment, again will after taking-up
It is immersed in immersion treatment 50min in the silane coupler aqueous solution, is finally drawn off standby after drying；
B. the rubber wood timber wood powder after a processing will be operated to be immersed in modified aqueous solution, standby, institute is filtered out after immersion treatment 30min
Each material and its percentage by weight in the modified aqueous solution stated are：8% nano titanium oxide, 1.5% sodium hydroxide, surplus is
Water；
（3）Mixing extrusion：
By step（2）Rubber wood timber wood powder after processing is with polyvinyl chloride, foaming agent, dispersant, filler according to mass ratio 45：60：
12：5：17 are mixed, and mixed material then is put into mixing process 40min in high speed muller, then kneaded again
Material be put into dual-screw pelletizer granulate, finally by material granulate input conical double screw extruder in extrusion molding
.
Further, step（1）Described in drying temperature be 60 DEG C.
Further, step（2）When operating the Steam explosion treatment described in a, control pressure is 2.3MPa, controls temperature
For 150 DEG C, heat-insulation pressure keeping unloads warm release again after handling 22s.
Further, step（2）The mass fraction of silane coupler is in the silane coupler aqueous solution described in operation a
10%。
Further, step（2）Also apply the ultrasonic wave that frequency is 45KHz when operating the immersion treatment described in b to carry out
Aid in treatment.
Further, step（2）The granular size for operating the nano titanium oxide described in b is 20 ~ 50nm.
Further, step（3）Described in foaming agent be sodium acid carbonate foaming agent.
Further, step（3）Described in dispersant be glyceryl tristearate.
Further, step（3）Described in filler be calcium carbonate.
Comparative example 1
This comparative example 1 compared with Example 2, saves step（2）At Steam explosion treatment in wood powder modification operation a
Reason, method and step all same in addition.
Comparative example 2
This comparative example 2 compared with Example 2, saves step（2）At Steam explosion treatment in wood powder modification operation a
Reason, and step（2）The operation b of wood powder modification, and in step（3）Rubber wood timber wood powder is added in mixing extrusion into material
The nano titanium oxide of gross mass 2%, method and step all same in addition.
Comparative example 3
This comparative example 3 compared with Example 2, saves step（2）Wood powder modification, method and step in addition is homogeneous
Together.
In order to contrast effect of the present invention, to above-described embodiment 2, comparative example 1, comparative example 2, comparative example 3
Obtained decorative panel carries out performance detection, and specific correction data is as shown in table 1 below：
Table 1
| Oxygen index (OI)（%） | Plate face nail-holding ability（kN） | Bending strength（MPa） | Thickness swelling rate（%） | |
| Embodiment 2 | 42.5 | 1.27 | 16.6 | 0.50 |
| Comparative example 1 | 35.1 | 0.96 | 12.4 | 0.78 |
| Comparative example 2 | 32.0 | 0.85 | 10.5 | 0.92 |
| Comparative example 3 | 30.2 | 0.82 | 10.2 | 0.95 |
Note：Oxygen index (OI) described in upper table 1 is tested with reference to GB2406-80, is specifically to be carried out on HC-2 type oxygen index instruments
The oxygen index (OI) test of decorative panel；Described plate face nail-holding ability method with reference to as defined in 4. 10 in GB/T 17657-1999 is entered
Row test；Described bending strength is tested with reference to GB/T 24137-2009 requirement；Described thickness swelling rate
Refer to that sample soaks the expansion rate of its thickness after 72h in water.
The combination property of PVC wood plastic composite decorating board made from the inventive method preferably, is promoted it can be seen from upper table 1
Use value is higher.
Claims (9)
1. a kind of preparation technology of PVC wood plastic composite decorating board, it is characterised in that comprise the following steps：
（1）Wood powder drying process：
First rubber wood timber wood powder is dried processing, it is 4 ~ 6% to dry to overall water content, then screened to mesh number for 40 ~
60 mesh are standby；
（2）Wood powder modification：
A. by step（1）Rubber wood timber wood powder after processing, which is put into steam blasting machine, carries out Steam explosion treatment, again will after taking-up
It is immersed in 40 ~ 50min of immersion treatment in the silane coupler aqueous solution, is finally drawn off standby after drying；
B. will operate a processing after rubber wood timber wood powder be immersed in modified aqueous solution, filtered out after 25 ~ 30min of immersion treatment it is standby,
Each material and its percentage by weight in described modified aqueous solution are：5 ~ 8% nano titanium oxides, 0.8 ~ 1.5% sodium hydroxide,
Surplus is water；
（3）Mixing extrusion：
By step（2）Rubber wood timber wood powder after processing is with polyvinyl chloride, foaming agent, dispersant, filler according to mass ratio 40 ~ 45：
55~60：7~12：3~5：13 ~ 17 are mixed, then by mixed material be put into mixing process 35 in high speed muller ~
40min, the material then kneaded again is put into dual-screw pelletizer and granulated, and the material granulated finally is put into conical double ribbon
Extrusion molding in bar extruder.
2. a kind of preparation technology of PVC wood plastic composite decorating board according to claim 1, it is characterised in that step（1）In
Described drying temperature is 55 ~ 60 DEG C.
3. a kind of preparation technology of PVC wood plastic composite decorating board according to claim 1, it is characterised in that step（2）Behaviour
When making the Steam explosion treatment described in a, control pressure is 2.0 ~ 2.3MPa, and it is 145 ~ 150 DEG C to control temperature, at heat-insulation pressure keeping
Warm release is unloaded again after 18 ~ 22s of reason.
4. a kind of preparation technology of PVC wood plastic composite decorating board according to claim 1, it is characterised in that step（2）Behaviour
The mass fraction for making silane coupler in the silane coupler aqueous solution described in a is 8 ~ 10%.
5. a kind of preparation technology of PVC wood plastic composite decorating board according to claim 1, it is characterised in that step（2）Behaviour
Also apply the ultrasonic wave that frequency is 40 ~ 45KHz when making the immersion treatment described in b and carry out aid in treatment.
6. a kind of preparation technology of PVC wood plastic composite decorating board according to claim 1, it is characterised in that step（2）Behaviour
The granular size for making the nano titanium oxide described in b is 20 ~ 50nm.
7. a kind of preparation technology of PVC wood plastic composite decorating board according to claim 1, it is characterised in that step（3）In
Described foaming agent is any one in AC foaming agents, zinc oxide foaming agent, sodium acid carbonate foaming agent.
8. a kind of preparation technology of PVC wood plastic composite decorating board according to claim 1, it is characterised in that step（3）In
Described dispersant is any one in microcrystalline wax, magnesium stearate, glyceryl tristearate.
9. a kind of preparation technology of PVC wood plastic composite decorating board according to claim 1, it is characterised in that step（3）In
Described filler is any one in talcum powder, barium sulfate, calcium carbonate.
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| CN201710313577.1A CN107236204A (en) | 2017-05-05 | 2017-05-05 | A kind of preparation technology of PVC wood plastic composite decorating board |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107793675A (en) * | 2017-11-18 | 2018-03-13 | 安徽省万帮新型建材科技有限公司 | A kind of preparation method of wood plastic composite |
| CN109354892A (en) * | 2018-09-18 | 2019-02-19 | 华南农业大学 | A kind of de- content rubber wood-flour/high-density polyethylene composite material and preparation method thereof |
| CN109575625A (en) * | 2018-11-28 | 2019-04-05 | 安徽领塑科技有限公司 | A kind of natural fine modeling particle and preparation method thereof |
| CN110845808A (en) * | 2019-11-18 | 2020-02-28 | 成都新柯力化工科技有限公司 | Low-shrinkage heat-resistant PVC (polyvinyl chloride) wood-plastic decorative plate and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107793675A (en) * | 2017-11-18 | 2018-03-13 | 安徽省万帮新型建材科技有限公司 | A kind of preparation method of wood plastic composite |
| CN109354892A (en) * | 2018-09-18 | 2019-02-19 | 华南农业大学 | A kind of de- content rubber wood-flour/high-density polyethylene composite material and preparation method thereof |
| CN109575625A (en) * | 2018-11-28 | 2019-04-05 | 安徽领塑科技有限公司 | A kind of natural fine modeling particle and preparation method thereof |
| CN110845808A (en) * | 2019-11-18 | 2020-02-28 | 成都新柯力化工科技有限公司 | Low-shrinkage heat-resistant PVC (polyvinyl chloride) wood-plastic decorative plate and preparation method thereof |
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