CN109575480A - A kind of wood-plastic board and preparation method thereof - Google Patents
A kind of wood-plastic board and preparation method thereof Download PDFInfo
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- CN109575480A CN109575480A CN201811495940.7A CN201811495940A CN109575480A CN 109575480 A CN109575480 A CN 109575480A CN 201811495940 A CN201811495940 A CN 201811495940A CN 109575480 A CN109575480 A CN 109575480A
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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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- 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
- C08J9/0014—Use of organic additives
- C08J9/0023—Use of organic additives containing oxygen
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- 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
- C08J9/0066—Use of inorganic compounding ingredients
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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
- C08J9/0095—Mixtures of at least two compounding ingredients belonging to different one-dot groups
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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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- 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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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2423/26—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment
- C08J2423/28—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers modified by chemical after-treatment by reaction with halogens or halogen-containing compounds
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- C—CHEMISTRY; METALLURGY
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- C08J2497/00—Characterised by the use of lignin-containing materials
- C08J2497/02—Lignocellulosic material, e.g. wood, straw or bagasse
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Abstract
The present invention provides a kind of wood-plastic boards, belong to composite board preparation technical field.The present invention replaces part wood powder with ecological wooden milling material, can economize on resources；Meanwhile PVC, calcium powder, wood powder and ecological wooden milling material of the invention can be mixed uniformly in the presence of a stabilizer, form uniform system；In addition, making uniform system sufficiently foam under the collective effect of the raw materials such as foaming control agent, foaming agent and stearic acid, the mechanical property and product qualification rate of wood-plastic board are improved.From embodiment as can be seen that the tensile strength of wood-plastic board provided by the invention is up to 23.0~23.9MPa, shore hardness is 58~64HD, has excellent mechanical property.
Description
Technical field
The present invention relates to composite board preparation technical fields more particularly to a kind of wood-plastic board and preparation method thereof.
Background technique
It is mainly basic material and thermoplastic macromolecule material (plastics) and processing aid etc. by timber that wood moulding material, which is a kind of,
Extrusion molding and the environmentally protective new decorative material of manufactured high-tech are heated through die apparatus again after mixing, has timber concurrently
It is the advanced composite material (ACM) that can substitute timber and plastics with the performance and feature of plastics.
Wood powder is first granulated by the preparation needs of traditional wood-plastic board, wood powder grain can be processed into wood moulding after the completion of granulation
Plate, such processing method cause wood-plastic board intensity low, complex steps.Another method is directly using substances such as wood powders as raw material
Processing, but since unreasonable and processing method the mismatch of formula of raw material causes wood powder that can bond, the wood made
Mould plate poor mechanical property, product are unqualified, are even difficult to form.
Summary of the invention
In view of this, the purpose of the present invention is to provide a kind of wood-plastic board and preparation method thereof, wood moulding provided by the invention
Plate intensity is high, product qualification rate is high, and raw material can directly carry out extrusion plasticizing, simple process, time saving and energy saving.
In order to achieve the above-mentioned object of the invention, the present invention the following technical schemes are provided:
The present invention provides a kind of wood-plastic boards, are prepared by the raw material for including following parts by weight: PVC50~75 part,
70~100 parts of calcium powder, 9~15 parts of wood powder, 25~50 parts of material of ecological wooden milling, 3~5 parts of foaming control agent, stabilizer 2.5~4
Part, 2.0~5.0 parts of CPE plasticizer, 0.32~0.86 part of stearic acid, 0.3~0.8 part of PE wax, 0.4~1 part of AC foaming agent, NC
0.5~1.2 part of foaming agent.
Preferably, ecological wooden milling material recycles abrasive lapping by ecological wooden and forms, the ecological wooden by including wood powder,
The raw material of PVC and calcium powder is prepared.
Preferably, the partial size of the ecological wooden milling material is 30~100 mesh.
Preferably, the stabilizer includes calcium-zinc composite stabilizing agent.
Preferably, the foaming control agent includes foaming control agent 530 or foaming control agent 531.
Preferably, the partial size of the calcium powder is >=1200 mesh.
Preferably, the partial size of the wood powder is >=100 mesh.
The present invention also provides the preparation methods of wood-plastic board described in above-mentioned technical proposal, comprising the following steps:
After raw material is mixed in proportion, then the wood-plastic board successively is obtained through extrusion plasticizing, sizing, cooling and traction.
Preferably, the mixing includes that the heat successively carried out mixes cold mix.
Preferably, the extrusion plasticizing uses double screw extruder, and the double screw extruder is divided into eight heating zones.
The present invention provides a kind of wood-plastic boards, are prepared by the raw material for including following parts by weight: PVC50~75 part,
70~100 parts of calcium powder, 9~15 parts of wood powder, 25~50 parts of material of ecological wooden milling, 3~5 parts of foaming control agent, stabilizer 2.5~4
Part, 2.0~5.0 parts of CPE plasticizer, 0.32~0.86 part of stearic acid, 0.3~0.8 part of PE wax, 0.4~1 part of AC foaming agent, NC
0.5~1.2 part of foaming agent.The present invention replaces part wood powder with ecological wooden milling material, can economize on resources；Meanwhile it is of the invention
PVC, calcium powder, wood powder and ecological wooden milling material can be mixed uniformly in the presence of a stabilizer, form uniform system；In addition, sending out
It steeps under regulator, foaming agent and stearic collective effect, so that uniform system is sufficiently foamed, improve the intensity and production of wood-plastic board
Product qualification rate.From examples it can be seen that the tensile strength of wood-plastic board provided by the invention is up to 23.0~23.9MPa, shore
Hardness is 58~64HD, has excellent mechanical property.
Further, the present invention uses double screw extruder, and extrusion plasticizing is directly carried out after raw material is mixed, wood is omitted
Powder granulation process is easy to operate, time saving and energy saving.
Specific embodiment
The present invention provides a kind of wood-plastic boards, are prepared by the raw material for including following parts by weight: PVC50~75 part,
70~100 parts of calcium powder, 9~15 parts of wood powder, 25~50 parts of material of ecological wooden milling, 3~5 parts of foaming control agent, stabilizer 2.5~4
Part, 2.0~5.0 parts of CPE plasticizer, 0.32~0.86 part of stearic acid, 0.3~0.8 part of PE wax, 0.4~1 part of AC foaming agent, NC
0.5~1.2 part of foaming agent.
The raw material of present invention preparation wood-plastic board includes the PVC that parts by weight are 50~75 parts, preferably 55~70 parts, more excellent
It is selected as 60~65 parts.In the present invention, plastic matrix of the PVC as wood-plastic board can make wood powder and stabilizer preferably network
Package is closed, to improve the toughness and intensity of wood-plastic board.
On the basis of the parts by weight of PVC, the raw material of present invention preparation wood-plastic board includes the calcium that parts by weight are 70~100 parts
Powder, preferably 75~95 parts, most preferably 80~90 parts.In the present invention, the calcium powder partial size preferably >=1200 mesh, it is more excellent
Select 1300~1500 mesh, most preferably 1350~1450 mesh.In the present invention, the calcium powder has lesser partial size, can be uniform
Ground is dispersed in PVC matrix, and then improves the intensity of wood-plastic board.
On the basis of the parts by weight of PVC, the raw material of present invention preparation wood-plastic board includes the wood that parts by weight are 9~15 parts
Powder, preferably 10~14 parts, more preferably 11~13 parts.In the present invention, wood powder partial size preferably >=100 mesh, more preferable 150
~300 mesh, most preferably 200~250 mesh.In the present invention, the wood powder can enhance the toughness of wood-plastic board, moreover it is possible to make wood-plastic board
With woodiness touch.
On the basis of the parts by weight of PVC, the raw material of present invention preparation wood-plastic board includes the life that parts by weight are 25~50 parts
State wood milling material, preferably 30~45 parts, more preferably 35~40 parts.In the present invention, the partial size of the ecological wooden milling material
Preferably 30~100 mesh, more preferably 40~80 mesh, most preferably 50~60 mesh.In the present invention, the ecological wooden milling material
It is formed it is preferred that recycling abrasive lapping by ecological wooden, the ecological wooden preferably comprises the commercially available ecological wooden of wood powder, PVC and calcium powder.
In an embodiment of the present invention, ecological wooden milling material is preferably obtained by following steps: by waste and old ecological wooden plate or
Leftover pieces are broken into the particle of 0.2~0.5cm through crusher；It enters back into flour mill and wears into 0.5~0.8mm, obtain ecological wooden mill
Powder.In the present invention, the ecological wooden plate includes wood plastic composite or PE plate.In the present invention, the ecological wooden
Milling material replaces part wood powder as fiberfill, while saving timber, wood-plastic board can also be made to have the performance of timber.
On the basis of the parts by weight of PVC, the raw material of present invention preparation wood-plastic board includes the foaming that parts by weight are 3~5 parts
Regulator, preferably 3.5~4.5 parts, most preferably 4.0 parts.In the present invention, the foaming control agent preferably foams and adjusts
Agent 530 or foaming control agent 531.The present invention does not have special restriction to the source of the foaming control agent, using this field skill
Commercial product known to art personnel.
On the basis of the parts by weight of PVC, it include parts by weight is 2.5~4 parts steady that the present invention, which prepares the raw material of wood-plastic board,
Determine agent, preferably 3.0~3.5 parts, more preferably 3.2~3.4 parts.In the present invention, the stabilizer is preferably Ca Zn composite
Stabilizer.The present invention does not have special restriction to the source of the stabilizer, using commercially available production well known to those skilled in the art
Product.In the present invention, the stabilizer can make wood-plastic board have good thermal stability, light stable and the transparency.
On the basis of the parts by weight of PVC, it is 2.0~5.0 parts that the raw material of present invention preparation wood-plastic board, which includes parts by weight,
CPE plasticizer, preferably 2.5~4.5 parts, most preferably 3.0~4.0 parts.The present invention does not have the source of the CPE plasticizer
Special restriction, using commercial product well known to those skilled in the art.In the present invention, the plasticizer can make wood
Mould plate has certain flexible enhancement, improves the processability of wood-plastic board.
On the basis of the parts by weight of PVC, it is 0.32~0.86 part that the raw material of present invention preparation wood-plastic board, which includes parts by weight,
Stearic acid, preferably 0.35~0.80 part, most preferably 0.4~0.60 part.In the present invention, the stearic acid mainly as
The lubricant of PVC matrix, while the flexibility of wood-plastic board can also be increased to a certain extent.
On the basis of the parts by weight of PVC, it is 0.3~0.8 part that the raw material of present invention preparation wood-plastic board, which includes parts by weight,
PE wax, preferably 0.4~0.7 part, more preferably 0.5~0.6 part.The present invention does not have special limit to the source of the PE wax
It is fixed, using commercial product well known to those skilled in the art.In the present invention, the PE wax and stearic acid are as lubrication
Agent can improve the processability of wood-plastic board jointly.
On the basis of the parts by weight of PVC, it is 0.4~1.0 part that the raw material of present invention preparation wood-plastic board, which includes parts by weight,
AC foaming agent, preferably 0.5~0.9 part, most preferably 0.6~0.8 part.
On the basis of the parts by weight of PVC, it is 0.5~1.2 part that the raw material of present invention preparation wood-plastic board, which includes parts by weight,
NC foaming agent, preferably 0.6~1.0 part, most preferably 0.7~0.9 part.In the present invention, the NC foaming agent and AC foam
Agent has good intermiscibility, can promote decomposition rate mutually, improves foaming effect, make wood-plastic board have certain toughness,
Intensity and heat insulating ability.
The present invention also provides the preparation methods of wood-plastic board described in above-mentioned technical proposal, comprising the following steps:
After raw material is mixed in proportion, then the wood-plastic board successively is obtained through extrusion plasticizing, sizing, cooling and traction.
In the present invention, the mixing preferably includes the heat successively carried out and mixes cold mix.In the present invention, the heat is mixed
Temperature is preferably 115~130 DEG C, more preferably 120~125 DEG C, most preferably 121~123 DEG C.In the present invention, the heat
The mixed time is preferably 15~30min, more preferably 18~25min, most preferably 20~23min.In the present invention, described cold
Mixed temperature is preferably 30~50 DEG C, more preferably 35~45 DEG C, most preferably 40 DEG C.In the present invention, when described cold mixed
Between preferably 10~15min, more preferably 11~14min, most preferably 12~13min.The present invention mixes the heat cold mixed
Mode there is no special restriction, using well known to a person skilled in the art hybrid modes, specifically, as stir.At this
In invention, the revolving speed of the stirring is preferably 1200~1500r/min, more preferably 1250~1450r/min, most preferably
1300~1400r/min.In the present invention, the cold mixing heat is mixed so that raw material is sufficiently mixed, and form uniformly mixed object
Matter.
In the present invention, the pressure of the extrusion plasticizing is preferably 20~30MPa, more preferably 22~28MPa, most preferably
For 24~26MPa.
In the present invention, it is preferable to use double screw extruders for the extrusion plasticizing.In the present invention, the twin-screw extrusion
Machine is preferably divided into eight heating zones.In the present invention, the temperature of first heating zone is preferably 130~140 DEG C, more preferably
132~138 DEG C, most preferably 134~136 DEG C；The soaking time of first heating zone is preferably 60~70min, more preferably
For 62~68min, most preferably 64~66min.In the present invention, the temperature of second heating zone is preferably 145~150
DEG C, more preferably 146~149 DEG C, most preferably 147~148 DEG C；The soaking time of second heating zone is preferably 60~
70min, more preferably 62~68min, most preferably 64~66min.In the present invention, the temperature of the third heating zone is preferred
It is 150~160 DEG C, more preferably 152~158 DEG C, most preferably 154~156 DEG C；The soaking time of the third heating zone is excellent
It is selected as 60~70min, more preferably 62~68min, most preferably 64~66min.In the present invention, the 4th heating zone
Temperature is preferably 160~175 DEG C, more preferably 163~174 DEG C, most preferably 165~170 DEG C；The guarantor of 4th heating zone
The warm time is preferably 60~70min, more preferably 62~68min, most preferably 64~66min.In the present invention, the described 5th
The temperature of heating zone is preferably 160~165 DEG C, more preferably 161~164 DEG C, most preferably 162~163 DEG C；The slender acanthopanax
The soaking time of hot-zone is preferably 60~70min, more preferably 62~68min, most preferably 64~66min.In the present invention,
The temperature of 6th heating zone is preferably 170~180 DEG C, more preferably 172~178 DEG C, most preferably 174~176 DEG C；Institute
The soaking time for stating the 6th heating zone is preferably 60~70min, more preferably 62~68min, most preferably 64~66min.?
In the present invention, the temperature of the 7th heating zone is preferably 170~180 DEG C, more preferably 174~178 DEG C, most preferably 175
~178 DEG C；The soaking time of 7th heating zone is preferably 60~80min, more preferably 62~68min, most preferably 64
~66min.In the present invention, the temperature of the 8th heating zone is preferably 175~180 DEG C, and more preferably 176~179 DEG C, most
Preferably 177~178 DEG C；The soaking time of 8th heating zone is preferably 60~70min, more preferably 62~68min, most
Preferably 64~66min.In the present invention, first heating zone to third heating zone purpose be make mixed raw material into
Row plastics processing；The purpose of 4th heating zone to the 8th heating zone is that the mixed raw material of plastics processing is made to foam.
In the present invention, the vacuum degree of the sizing is preferably 0.4~0.6MPa, more preferably 0.45~0.55MPa, most
Preferably 0.5MPa.In the present invention, the temperature of the sizing is preferably 5~13 DEG C, more preferably 6~10 DEG C, most preferably 8
℃。
In the present invention, the cooling preferably uses water cooling to room temperature.
The present invention does not have special restriction to the size of tractive force, those skilled in the art according to the size of product,
Type is selected.
In the present invention, the raw material can be such that raw material is sufficiently mixed after heat of the invention mixes cold mix；It again will mixing
Raw material afterwards is plasticized through double screw extruder and squeezes out, and through molding, cooling and traction, has obtained the wood-plastic board of excellent in mechanical performance.
Method of the invention carries out extrusion plasticizing after directly mixing raw material, and raw material is not granulated extrusion plasticizing again first, is simplified
Step, it is time saving and energy saving；It is formed in combination with raw material, ensure that the mechanical property of wood-plastic board.
Wood-plastic board provided by the invention and preparation method thereof is described in detail below with reference to embodiment, but cannot
They are interpreted as limiting the scope of the present invention.
Embodiment 1
A kind of wood-plastic board is prepared by the raw material for including following parts by weight:
75 parts of PVC, 70 parts of calcium powder, 15 parts of wood powder, 25 parts of material of ecological wooden milling, 5305 parts of foaming control agent, Ca Zn composite
4 parts of stabilizer, 5.0 parts of CPE plasticizer, 0.86 part of stearic acid, 0.8 part of PE wax, 1 part of AC foaming agent, 1.2 parts of NC foaming agent.
Preparation method the following steps are included:
Above-mentioned raw materials are successively mixed into 20min, in 35 DEG C of cold mixed 12min in 115 DEG C of heat in proportion, obtain mixed material；It will
Mixed material carries out plasticizing extrusion in double screw extruder；Eight heating zones of the double screw extruder point；Described first adds
The temperature of hot-zone is 140 DEG C, time 1h；The temperature of second heating zone is 145 DEG C, time 1h；The third heating
The temperature in area is 150~155 DEG C, time 1h；The temperature of 4th heating zone is 160~170 DEG C, time 1h；It is described
The temperature of 5th heating zone is 160~165 DEG C, time 1h；The temperature of 6th heating zone is 170~175 DEG C, and the time is
1h；The temperature of 7th heating zone is 170~75 DEG C, time 1h；The temperature of 8th heating zone is 175~185 DEG C,
Time is 1h；It carries out shaping in 20~30MPa, 8~13 DEG C, water cooling to room temperature, is drawn through tractive force, obtain the wood-plastic board.
Test the performance of gained wood-plastic board in the present embodiment: fracture load by bending 3432N；The experiment of room temperature ball falling impact
When, pit diameter 8.6mm；The water suction change rate of length direction is 0.07%, and the water suction change rate of width direction is 0.10%,
Water suction change rate in terms of thickness is 0.22%；Front heated dimensions change rate be -0.5%, back side heated dimensions change rate be -
0.1%；When cold-resistant thermal cycle experiment, no cracking outside surface, without bubbling, change in size 0.03mm；Tensile strength is
23.5MPa；Moisture content 0.4%；Dimensional stability 0.50%；Shore hardness 60HD；Burst size of methanal is 0.2mg/L；It is soluble
Lead, cadmium, chromium and mercury are not detected；Freezing and thawing performance 97%；Surface abrasion resistance 0.039g/100t；Antiskid value 45；Water absorption rate 6.0%.
Embodiment 2
A kind of wood-plastic board is prepared by the raw material for including following parts by weight:
50 parts of PVC, 62.5 parts of calcium powder, 8 parts of wood powder, 30 parts of material of ecological wooden milling, 5304 parts of foaming control agent, calcium zinc is multiple
2.5~2.8 parts of stabilizer are closed, 2.5~2.8 parts of CPE plasticizer, 0.3~0.5 part of stearic acid, 0.4~0.6 part of PE wax, AC foams
0.6~0.9 part of agent, 0.9~1.2 part of NC foaming agent.
Preparation method the following steps are included:
Above-mentioned raw materials are successively mixed into 13min, in 25~40 DEG C of cold mixed 40min in 115~130 DEG C of heat in proportion, are mixed
Close material；Mixed material is subjected to plasticizing extrusion in double screw extruder；Eight heating zones of the double screw extruder point；Institute
The temperature for stating the first heating zone is 140 DEG C, time 60min；The temperature of second heating zone is 145~150 DEG C, and the time is
60min；The temperature of the third heating zone is 150~160 DEG C, time 60min；The temperature of 4th heating zone is 170
~175 DEG C, time 60min；The temperature of 5th heating zone is 160~165 DEG C, time 60min；6th heating
The temperature in area is 180 DEG C, time 60min；The temperature of 7th heating zone is 175~180 DEG C, time 60min；It is described
The temperature of 8th heating zone is 175~180 DEG C, time 60min；It is carried out shaping in 20~30MPa, 8~13 DEG C, water cooling to room
Temperature is drawn through tractive force, obtains the wood-plastic board.
Test the performance of gained wood-plastic board in the present embodiment: fracture load by bending 3436N；The experiment of room temperature ball falling impact
When, pit diameter 8.4mm；The water suction change rate of length direction is 0.07%, and the water suction change rate of width direction is 0.12%,
Water suction change rate in terms of thickness is 0.24%；Front heated dimensions change rate be -0.6%, back side heated dimensions change rate be -
0.2%；When cold-resistant thermal cycle experiment, no cracking outside surface, without bubbling, change in size 0.04mm；Tensile strength is
23.9MPa；Moisture content 0.5%；Dimensional stability 0.51%；Shore hardness 58HD；Burst size of methanal is 0.1mg/L；It is soluble
Lead, cadmium, chromium and mercury are not detected；Freezing and thawing performance 95%；Surface abrasion resistance 0.035g/100t；Antiskid value 47；Water absorption rate 5.9%.
Embodiment 3
A kind of wood-plastic board is prepared by the raw material for including following parts by weight:
60 parts of PVC, 80 parts of calcium powder, 10 parts of wood powder, 30 parts of material of ecological wooden milling, 5304 parts of foaming control agent, Ca Zn composite
2.5~2.7 parts of stabilizer, 3.0 parts of CPE plasticizer, 0.35 part of stearic acid, 0.3 part of PE wax, 0.4 part of AC foaming agent, NC foaming agent
1.0 part.
Preparation method the following steps are included:
Above-mentioned raw materials are successively mixed into 15~20min, in 35~40 DEG C of cold mixed 20min in 115~130 DEG C of heat in proportion, are obtained
To mixed material；Mixed material is subjected to plasticizing extrusion in double screw extruder；Eight heating of the double screw extruder point
Area；The temperature of first heating zone is 140 DEG C, time 60min；The temperature of second heating zone is 145~150 DEG C,
Time is 60min；The temperature of the third heating zone is 150~160 DEG C, time 60min；The temperature of 4th heating zone
It is 170~175 DEG C, time 60min；The temperature of 5th heating zone is 160~165 DEG C, time 60min；Described
The temperature of six heating zones is 180 DEG C, time 60min；The temperature of 7th heating zone is 175~180 DEG C, and the time is
60min；The temperature of 8th heating zone is 175~180 DEG C, time 60min；Determined in 20~30MPa, 8~13 DEG C
Type, water cooling to room temperature, draw through tractive force, obtain the wood-plastic board.
Test the performance of gained wood-plastic board in the present embodiment: fracture load by bending 3440N；The experiment of room temperature ball falling impact
When, pit diameter 8.5mm；The water suction change rate of length direction is 0.075%, and the water suction change rate of width direction is
0.11%, the water suction change rate in terms of thickness is 0.22%；Front heated dimensions change rate is -0.5%, and back side heated dimensions become
Rate is -0.1%；When cold-resistant thermal cycle experiment, no cracking outside surface, without bubbling, change in size 0.03mm；Tensile strength is
23.0MPa；Moisture content 0.4%；Dimensional stability 0.50%；Shore hardness 64HD；Burst size of methanal is 0.18mg/L；It is soluble
Lead, cadmium, chromium and mercury are not detected；Freezing and thawing performance 98%；Surface abrasion resistance 0.040g/100t；Antiskid value 47；Water absorption rate 6.5%.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of wood-plastic board is prepared by the raw material for including following parts by weight: 50~75 parts of PVC, 70~100 parts of calcium powder,
9~15 parts of wood powder, 25~50 parts of material of ecological wooden milling, 3~5 parts of foaming control agent, 2.5~4 parts of stabilizer, CPE plasticizer 2.0
~5.0 parts, 0.32~0.86 part of stearic acid, 0.3~0.8 part of PE wax, 0.4~1 part of AC foaming agent, NC foaming agent 0.5~1.2
Part.
2. wood-plastic board according to claim 1, which is characterized in that the ecological wooden milling material is ground by ecological wooden reclaimed materials
It grinds, the ecological wooden is by including that the raw material of wood powder, PVC and calcium powder is prepared.
3. wood-plastic board according to claim 1 or 2, which is characterized in that the partial size of the ecological wooden milling material is 30~100
Mesh.
4. wood-plastic board according to claim 1, which is characterized in that the stabilizer includes calcium-zinc composite stabilizing agent.
5. wood-plastic board according to claim 1, which is characterized in that the foaming control agent include foaming control agent 530 or
Foaming control agent 531.
6. wood-plastic board according to claim 1, which is characterized in that the partial size of the calcium powder is >=1200 mesh.
7. wood-plastic board according to claim 1, which is characterized in that the partial size of the wood powder is >=100 mesh.
8. the preparation method of any one of claim 1~7 wood-plastic board, comprising the following steps:
After raw material is mixed in proportion, then the wood-plastic board successively is obtained through extrusion plasticizing, sizing, cooling and traction.
9. preparation method according to claim 8, which is characterized in that the mixing is cold including the heat mixing successively carried out
It is mixed.
10. preparation method according to claim 9, which is characterized in that the extrusion plasticizing uses double screw extruder, institute
It states double screw extruder and is divided into eight heating zones.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811495940.7A CN109575480A (en) | 2018-12-07 | 2018-12-07 | A kind of wood-plastic board and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811495940.7A CN109575480A (en) | 2018-12-07 | 2018-12-07 | A kind of wood-plastic board and preparation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110053321A (en) * | 2019-04-17 | 2019-07-26 | 南京工程学院 | A kind of fiber reinforcement wood plastic composite foaming acoustic board |
| CN110483910A (en) * | 2019-07-24 | 2019-11-22 | 宣城福美达新材料有限公司 | A kind of PVC wood plastic foamed board and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980627A (en) * | 2014-05-04 | 2014-08-13 | 安徽正隆新材料有限公司 | PVC foam board |
| CN105199420A (en) * | 2015-11-09 | 2015-12-30 | 佛山市炬业科技有限公司 | Door core material and preparation method thereof |
-
2018
- 2018-12-07 CN CN201811495940.7A patent/CN109575480A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103980627A (en) * | 2014-05-04 | 2014-08-13 | 安徽正隆新材料有限公司 | PVC foam board |
| CN105199420A (en) * | 2015-11-09 | 2015-12-30 | 佛山市炬业科技有限公司 | Door core material and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110053321A (en) * | 2019-04-17 | 2019-07-26 | 南京工程学院 | A kind of fiber reinforcement wood plastic composite foaming acoustic board |
| CN110053321B (en) * | 2019-04-17 | 2021-03-30 | 南京工程学院 | Fiber-reinforced wood-plastic composite material foaming acoustic board |
| CN110483910A (en) * | 2019-07-24 | 2019-11-22 | 宣城福美达新材料有限公司 | A kind of PVC wood plastic foamed board and preparation method thereof |
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