CN104130529A - High rigidity and low density PVC (polyvinyl chloride) wood plastic foaming board and preparation method thereof - Google Patents
High rigidity and low density PVC (polyvinyl chloride) wood plastic foaming board and preparation method thereof Download PDFInfo
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- CN104130529A CN104130529A CN201410376969.9A CN201410376969A CN104130529A CN 104130529 A CN104130529 A CN 104130529A CN 201410376969 A CN201410376969 A CN 201410376969A CN 104130529 A CN104130529 A CN 104130529A
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- 239000004800 polyvinyl chloride Substances 0.000 title claims abstract description 194
- 229920000915 polyvinyl chloride Polymers 0.000 title claims abstract description 193
- 239000002023 wood Substances 0.000 title claims abstract description 67
- 238000005187 foaming Methods 0.000 title claims abstract description 53
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 229920003023 plastic Polymers 0.000 title abstract description 13
- 239000004033 plastic Substances 0.000 title abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 71
- 239000000463 material Substances 0.000 claims abstract description 51
- 238000005452 bending Methods 0.000 claims abstract description 13
- 238000001125 extrusion Methods 0.000 claims abstract description 8
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 6
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 6
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 6
- 239000011425 bamboo Substances 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 66
- VTYYLEPIZMXCLO-UHFFFAOYSA-L calcium carbonate Substances [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 58
- 239000002984 plastic foam Substances 0.000 claims description 43
- 239000011347 resin Substances 0.000 claims description 41
- 229920005989 resin Polymers 0.000 claims description 41
- 239000000314 lubricant Substances 0.000 claims description 30
- 235000010216 calcium carbonate Nutrition 0.000 claims description 29
- 239000006057 Non-nutritive feed additive Substances 0.000 claims description 27
- 239000010456 wollastonite Substances 0.000 claims description 27
- 229910052882 wollastonite Inorganic materials 0.000 claims description 27
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 26
- 239000007822 coupling agent Substances 0.000 claims description 26
- 239000003381 stabilizer Substances 0.000 claims description 24
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 19
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 19
- 239000000203 mixture Substances 0.000 claims description 15
- 238000004381 surface treatment Methods 0.000 claims description 15
- 239000004605 External Lubricant Substances 0.000 claims description 14
- 239000004610 Internal Lubricant Substances 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 13
- 239000002245 particle Substances 0.000 claims description 13
- 239000000428 dust Substances 0.000 claims description 12
- 238000012545 processing Methods 0.000 claims description 12
- 230000008929 regeneration Effects 0.000 claims description 12
- 238000011069 regeneration method Methods 0.000 claims description 12
- 235000019738 Limestone Nutrition 0.000 claims description 10
- 239000006084 composite stabilizer Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 10
- 150000002910 rare earth metals Chemical class 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 10
- 239000012768 molten material Substances 0.000 claims description 8
- 235000007164 Oryza sativa Nutrition 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 4
- XPPKVPWEQAFLFU-UHFFFAOYSA-J diphosphate(4-) Chemical compound [O-]P([O-])(=O)OP([O-])([O-])=O XPPKVPWEQAFLFU-UHFFFAOYSA-J 0.000 claims description 4
- 235000011180 diphosphates Nutrition 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 238000011017 operating method Methods 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 235000009566 rice Nutrition 0.000 claims description 4
- 238000007493 shaping process Methods 0.000 claims description 4
- VVQNEPGJFQJSBK-UHFFFAOYSA-N Methyl methacrylate Chemical compound COC(=O)C(C)=C VVQNEPGJFQJSBK-UHFFFAOYSA-N 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 244000082204 Phyllostachys viridis Species 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000000945 filler Substances 0.000 abstract description 3
- 230000007547 defect Effects 0.000 abstract description 2
- 229910010272 inorganic material Inorganic materials 0.000 abstract description 2
- 239000011147 inorganic material Substances 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000000053 physical method Methods 0.000 abstract description 2
- 231100000252 nontoxic Toxicity 0.000 abstract 1
- 230000003000 nontoxic effect Effects 0.000 abstract 1
- 239000011368 organic material Substances 0.000 abstract 1
- 239000003973 paint Substances 0.000 abstract 1
- 239000002861 polymer material Substances 0.000 abstract 1
- 238000005507 spraying Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 27
- 238000005516 engineering process Methods 0.000 description 4
- 239000006260 foam Substances 0.000 description 4
- 241000209094 Oryza Species 0.000 description 3
- 239000012752 auxiliary agent Substances 0.000 description 2
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- 238000004519 manufacturing process Methods 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- 239000004604 Blowing Agent Substances 0.000 description 1
- 206010000269 abscess Diseases 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000011157 advanced composite material Substances 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
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- 238000013461 design Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000004088 foaming agent Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000004922 lacquer Substances 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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- 238000009736 wetting Methods 0.000 description 1
- 229940089401 xylon Drugs 0.000 description 1
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- Compositions Of Macromolecular Compounds (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention relates to the wood plastic material field, in particular relates to a high rigidity and low density PVC (polyvinyl chloride) wood plastic foaming board and a preparation method thereof, and solves the problems of low rigidity, low heat distortion temperature, influence on scope of application and the like of wood plastic foaming plate boards in the prior art. The PVC wood plastic foaming board is a novel wood plastic blending material using a physical method for blending of polymer materials, the PVC wood plastic foaming board is produced by using PVC as a main body material and using wood powder, bamboo powder and other organic material and other inorganic material as filler by an extrusion foaming process. The PVC wood plastic foaming board is high in strength, light in weight, waterproof, beautiful in appearance, environmentally-friendly, and non-toxic, and overcomes the defects that a PVC foaming board in the prior art requires paint spraying on the surface, operation is inconvenient and the environment is polluted. The PVC wood plastic foaming board has the characteristics of high rigidity (the bending elastic modulus is close to that of wood), low density (density is in the range of 0.45-0.75g / cm<3>), high heat resistance (the thermal deformation temperature is equal to or more than 80 DEG C) and the like.
Description
Technical field
The present invention relates to Wood-plastic material field, be specially a kind of high rigid, low density PVC Wood-plastic foam plate and preparation method thereof.
Background technology
The advanced composite material that Wood-plastic material is that a kind of use discarded xylon and vegetable fibre and thermoplastics etc. are filled, make after enhancing, modification, blend.This mixed and modified material is mixed corresponding mould and assistant formation machine again through special single screw extrusion machine or two spiral shell machine forcing machine, can be processed into section bar, sheet material or other goods.
The foaming plate of preparing with polyvinyl chloride (PVC) is mainly used in the manufacture of advertisement cabinet, bathroom cabinet, and the earliest from European introducing equipment and technology, the product standard of quoting is also that the density of sheet material is larger with reference to European standard.Polyvinyl chloride is a kind of universal thermoplastics of excellent property, is one of plastics variety of China's output maximum, and the processing forming of polyvinyl chloride is very poor, must add various processing aids, to improve its processing characteristics.Along with the especially development of auxiliary agent of development of equipment, the density of sheet material significantly reduced in recent years, and it is trend of the times that PVC Wood-plastic foam plate substitutes timber use.But current Wood-plastic foam plate disadvantage is: rigidity (being bending elastic modulus) is not as timber, and heat-drawn wire is on the low side, has had a strong impact on its range of application.
Summary of the invention
The object of the present invention is to provide a kind of high rigid, low density PVC Wood-plastic foam plate and preparation method thereof, solve that the Wood-plastic foam plate rigidity existing in prior art is lower, heat-drawn wire is on the low side and affect the problems such as its range of application.
Technical scheme of the present invention is:
A kind of high rigid, low density PVC Wood-plastic foam plate, meter by weight, this foamed board formula is composed as follows:
100 parts of polyvinyl chloride resins; 20～40 parts, PVC foaming regeneration abrasive dust material; 5～25 parts of MS resins; 10～50 parts of wollastonite fibres; 5～25 parts of light calcium carbonates; 5～30 parts of water-ground limestones; 10～30 parts of wood powders; 4～8 parts of PVC one package stabilizers; 0.5～2.0 part of PVC internal lubricant; 0.5～1.5 part of PVC external lubricant; 0.5～2.0 part of AC whipping agent; 0.5～1.5 part of NC whipping agent; 7～20 parts of PVC foaming control agents; 1.5～5.5 parts of PVC processing aids; 0.2～1.0 part of wood powder treatment agent; 0.15～0.75 part of silane coupling agent; 0.15～0.75 part of titanate coupling agent; 0.5～2.0 part of iron oxide yellow.
Described high rigid, low density PVC Wood-plastic foam plate, wherein:
Polyvinyl chloride resin is SG-7 type or SG-8 type polyvinyl chloride resin;
PVC foaming regeneration abrasive dust material 40～60 orders;
MS resin powdery, is methyl methacrylate and cinnamic multipolymer, and wherein: the content of M is 50～80wt%, melting index MI is 2～5;
Wollastonite fibre powdery, 200～325 orders, particle length-to-diameter ratio >=5;
Light calcium carbonate 1000～1200 orders;
Water-ground limestone 1250～1500 orders;
Wood powder 60～90 orders;
PVC one package stabilizer is the conventional one package stabilizer of PVC: lead salt one package stabilizer or rare earth composite stabilizer;
PVC internal lubricant is the conventional internal lubricant of PVC: lubricant 9696 or lubricant OA6;
PVC external lubricant is the conventional external lubricant of PVC: PE wax or lubricant AP or ZB-60;
PVC foaming control agent is conventional foaming control agent: the PA-530 of PVC;
PVC processing aid is the conventional processing aid of PVC: 1～4 part of ACR401 processing aid, 0.5～1.5 part of ACR175 processing aid;
Silane coupling agent is KH-550, KH-560 or KH-570;
Wood powder treatment agent adopts the titanate coupling agent of pyrophosphate type, and wood powder adopts bamboo wood powder, wood powder, shell powder or powdered rice hulls;
Titanate coupling agent adopts phosphatic type titanate coupling agent.
Described high rigid, low density PVC Wood-plastic foam plate, the particle length-to-diameter ratio of wollastonite fibre is preferably 5～10.
The preparation method of described high rigid, low density PVC Wood-plastic foam plate, comprises the steps:
(1) wollastonite fibre surface treatment
Wollastonite and silane coupling agent are put into high-speed mixer and mix 15～20min, when temperature of charge is raised to 80～120 DEG C, discharge is for subsequent use;
(2) wood powder surface treatment
Wood powder and wood powder treatment agent are put into high-speed mixer and mix 15～20min, when temperature of charge is raised to 80～120 DEG C, discharge is for subsequent use;
(3) light calcium carbonate, water-ground limestone surface treatment
Light calcium carbonate powder or heavy calcium carbonate powder are put into high-speed mixer with titanate coupling agent respectively and mix 15～20min, when temperature of charge is raised to 100～120 DEG C, discharge is for subsequent use;
(4) PVC Wood-plastic foam sheet metal forming
A, when putting into high-speed mixer after other raw materials except whipping agent are weighed by formula rate and being mixed to temperature of charge and reaching 100～120 DEG C, add AC whipping agent and NC whipping agent; When continuing to be mixed to temperature of charge and reaching 110～120 DEG C, material is entered in low speed mixer, when continuing to be mixed to temperature of charge and reaching 50～70 DEG C, discharge is for subsequent use;
B, the material of steps A gained is dropped in high temperature conical double screw extruder, extrusion processing becomes the tabular molten materials of different thickness;
C, the molten materials that step B is obtained, become sheet material through stock mould cooling and shaping;
D, the sheet material that step C is obtained, cut into 1.22 × 2.44m through double-cut saw
2standard plate; Thereby, obtain high rigid, low density PVC Wood-plastic foam plate.
The preparation method of described high rigid, low density PVC Wood-plastic foam plate, the technical indicator of this foamed board is as follows:
Density: 0.45～0.75g/cm
3; MOR: 18～25MPa; Bending elastic modulus: 1800～2600MPa; Tensile strength: 8～15MPa; Elongation at break: 5～12%; Heat-drawn wire: 80～90 DEG C.
The preparation method of described high rigid, low density PVC Wood-plastic foam plate, the operating procedure condition of high temperature conical double screw extruder is as follows: screw speed 15～30N/min, 80～110 DEG C of screw rod oil temperatures, 145～185 DEG C of barrel zone temperatures, 140～160 DEG C of merging core temperature, 160～185 DEG C of die temperatures, 140～160 DEG C of die lip temperature.
The preparation method of described high rigid, low density PVC Wood-plastic foam plate, the rotating speed of high-speed mixer is 1200～1800rpm, the rotating speed of low speed mixer is 80～120rpm.
Design philosophy of the present invention is as follows:
(1) PVC Wood-plastic foam plate prescription
In order to make the rigidity of PVC foaming plate large, density is little, outward appearance is good, can replace preferably timber to use, concrete measure is: A. fills a large amount of wollastonite fibres and replaces traditional calcium carbonate in formula, can significantly improve foamed board rigidity (because wollastonite fibre have larger length through than, after silane coupling agent activation, PVC is had to good reinforcing effect, not only can improve the intensity of PVC, can significantly improve especially the rigidity of PVC foaming plate, also be easy to disperse in PVC simultaneously, overcome short glass fiber and in PVC, be difficult for the shortcoming of disperseing, also overcome the lower defect of foaming plate rigidity of preparing with pearl filler), B. adopt MS resin alloy modified PVC resin, not only can improve processing and the foam performance of polyvinyl chloride resin, also can significantly improve rigidity and the surface hardness of PVC foaming plate simultaneously, make PVC foaming plate lightweight, good rigidly, C. in foaming formulation, add appropriate wood powder and can make foaming plate apparent more as timber, also can play reduction weight simultaneously, improve the effect of rigidity, D. in formula, add appropriate lightweight (or heavy) calcium carbonate and mainly reduce costs, improve processing characteristics.Innovative point in formula is exactly: adopting the wollastonite fibre of length-to-diameter ratio more than 5 is main stuffing, coordinates appropriate wood powder, calcium carbonate mixing infill system, and with MS blending and modifying PVC foaming formulation, to reach high rigidity, low-density effect.
(2) PVC Wood-plastic foam plate preparation method
Wollastonite fibre surface treatment, wood powder surface treatment, light calcium carbonate and water-ground limestone surface treatment are combined, utilize conical double screw extruder, adopt extrusion foaming technique, directly foaming powder-material is squeezed into Wood-plastic foam sheet material, production efficiency is high, cost.
Advantage of the present invention and beneficial effect are:
1, the present invention adopts physical method to carry out the novel wood-plastic intermingling material of macromolecular material, this sheet material is taking polyvinyl chloride as material of main part, taking the organic materialss such as wood powder, bamboo powder and other inorganic materials as weighting agent, and add various auxiliary agents, adopt extrusion foaming explained hereafter to go out Wood-plastic foam sheet material.This timber intensity is high, light weight, waterproof, beautiful appearance and environment-protecting asepsis, has overcome and when polyvinyl chloride foamed plate used, has needed surface lacquer in the past, operation inconvenience and cause the disadvantage of environmental pollution.
2, PVC Wood-plastic foam sheet material of the present invention has high rigidity (being that bending elastic modulus approaches timber), (density is at 0.45～0.75g/cm for low density
3), the feature such as thermotolerance higher (heat-drawn wire>=80 DEG C).
Embodiment
In embodiment, meter by weight, the high rigid, low density PVC of the present invention Wood-plastic foam plate prescription is composed as follows:
100 parts of polyvinyl chloride resins (as: SG-7 type or SG-8 type polyvinyl chloride resin), are the material of main part in formula, and its effect is that filler and other Synergist S-421 95 are bonded into an entirety, has certain physical and mechanical properties material;
PVC foaming regeneration abrasive dust material (40～60 order) 20～40 parts, its effect is the input speed that can improve PVC mixed powder, improves the plasticizing effect of material, improves foam performance;
MS resin (powdery, be methyl methacrylate and cinnamic multipolymer, wherein: the content of M is 50～80wt%, melting index MI is 2～5) 5～25 parts, its effect is rigidity, the hardness that improves polyvinyl chloride resin, improves processing characteristics and the foam performance of polyvinyl chloride resin;
10～50 parts of wollastonite fibres (particle length-to-diameter ratio >=5, particle length-to-diameter ratio is preferably 5～10 for powdery, 200～325 orders), its effect is the rigidity that can significantly improve PVC foaming plate;
5～25 parts of light calcium carbonates (1000～1200 order), its effect is to reduce costs, and increases melt strength;
5～30 parts of water-ground limestones (1250～1500 order), its effect is to reduce costs, and improves processing characteristics;
10～30 parts of wood powders (60～90 order), its effect improves the rigidity of foaming plate, reduces density, improves the outward appearance of foaming plate;
PVC commonly uses 4～8 parts of one package stabilizers (as: lead salt one package stabilizer or rare earth composite stabilizer etc.), and its effect is the thermostability that improves polyvinyl chloride resin, improves the processing characteristics of polyvinyl chloride resin;
PVC commonly uses 0.5～2 part of internal lubricant (as: lubricant 9696 or lubricant OA6), its effect is by reducing the reactive force between PVC molecule, thereby reduce the internal friction between PVC molecule in processing and reduce frictional heat, improve the plasticizing effect of material;
PVC commonly uses 0.5～1.5 part of external lubricant (as: PE wax or lubricant AP or ZB-60), and its effect is to reduce the adhesion of material to barrel and mouthful mould, reduces to extrude energy consumption, improves foaming plate surface smoothness;
0.5～2.0 part of AC whipping agent, its effect is PVC main foaming agent, significantly reduces foamed board density;
0.5～1.5 part of NC whipping agent, its effect is auxiliary blowing agent, can suitably absorb the heat producing when AC whipping agent decomposes, and makes foaming more steady, avoids interior burnt phenomenon;
PVC commonly uses 7～20 parts of foaming control agents (as: PA-530 etc.), and its effect is to improve PVC plasticizing effect, improves melt strength, makes abscess finer and smoother evenly, improves foaming effect, reduces panel density;
PVC commonly uses 1～4 part of processing aid (ACR401), and its effect is to improve PVC plasticizing effect, improves foam performance;
PVC commonly uses 0.5～1.5 part of processing aid (ACR175), and its effect is to make PVC foamed board skinning better effects if;
0.2～1.0 part of wood powder treatment agent, its effect is to make wood powder become lipophilicity by wetting ability, improves the dispersiveness of wood powder, improves the bonding strength with PVC molecule;
0.15～0.75 part of silane coupling agent, its effect is to improve the dispersiveness of wollastonite fibre in PVC, the bonding strength of raising and PVC molecule, the rigidity of raising sheet material;
0.15～0.75 part of titanate coupling agent, its effect is to improve the dispersiveness of calcium carbonate in PVC, improves the bonding strength with PVC;
0.5～2.0 part of iron oxide yellow, its effect is dyeing, makes foamed board have the outward appearance of timber, and fugitive color not.
The preparation technology of above-mentioned high rigid, low density PVC Wood-plastic foam plate is as follows:
(1) wollastonite fibre surface treatment
Wollastonite and silane coupling agent are put into high-speed mixer and mix about 15～20min, when temperature of charge is raised to 80～120 DEG C, discharge is for subsequent use.Wherein, silane coupling agent can adopt KH-550, KH-560 or KH-570.
(2) wood powder surface treatment
Wood powder and wood powder treatment agent are put into high-speed mixer and mix about 15～20min, when temperature of charge is raised to 80～120 DEG C, discharge is for subsequent use.Wherein, wood powder treatment agent can adopt the titanate coupling agent of pyrophosphate type, and wood powder can adopt bamboo wood powder, wood powder, shell powder or powdered rice hulls.
(3) light calcium carbonate, water-ground limestone surface treatment
Light calcium carbonate powder or heavy calcium carbonate powder are put into high-speed mixer with titanate coupling agent respectively and mix about 15～20min, when temperature of charge is raised to 100～120 DEG C, discharge is for subsequent use.Wherein, titanate coupling agent can adopt phosphatic type titanate coupling agent.
(4) PVC Wood-plastic foam sheet metal forming
A, when putting into high-speed mixer after other raw materials except whipping agent are weighed by formula rate and being mixed to temperature of charge and reaching 100～120 DEG C, add AC whipping agent and NC whipping agent; When continuing to be mixed to temperature of charge and reaching 110～120 DEG C, material is entered in low speed mixer, when continuing to be mixed to temperature of charge and reaching 50～70 DEG C, discharge is for subsequent use.
B, the material of steps A gained is dropped in high temperature conical double screw extruder, extrusion processing becomes the tabular molten materials of different thickness.
C, the molten materials that step B is obtained, become sheet material through stock mould cooling and shaping.
D, the sheet material that step C is obtained, cut into 1.22 × 2.44m through double-cut saw
2standard plate.
Thereby E, obtains high rigid, low density PVC Wood-plastic foam plate, and its performance is as follows:
Density: 0.45～0.75g/cm
3; MOR: 18～25MPa; Bending elastic modulus: 1800～2600MPa; Tensile strength: 8～15MPa; Elongation at break: 5～12%; Heat-drawn wire: 80～90 DEG C.
Wherein, the operating procedure condition of high temperature conical double screw extruder is as follows: screw speed 15～30N/min, 80～110 DEG C of screw rod oil temperatures, 145～185 DEG C of barrel zone temperatures, 140～160 DEG C of merging core temperature, 160～185 DEG C of die temperatures, 140～160 DEG C of die lip temperature.
Wherein, the rotating speed of high-speed mixer is 1200～1800rpm, and the rotating speed of low speed mixer is 80～120rpm.
Below, by embodiment, the present invention is described in more detail.
Embodiment 1
Meter by weight, the high rigid, low density PVC of the present embodiment Wood-plastic foam plate prescription is composed as follows:
100 parts of polyvinyl chloride resins (SG-8 type polyvinyl chloride resin);
PVC foaming regeneration abrasive dust material (40 order) 30 parts;
20 parts of MS resins (melting index MI is 2～5 for powdery, M content 50～80wt%);
10 parts of wollastonite fibres (powdery, 200 orders, particle length-to-diameter ratio 5);
20 parts of light calcium carbonates (1000 order);
20 parts of water-ground limestones (1250 order);
20 parts of wood powders (60 order);
PVC commonly uses 6 parts of one package stabilizers (lead salt one package stabilizer or rare earth composite stabilizer);
PVC commonly uses 1 part of internal lubricant (lubricant 9696 or lubricant OA6);
PVC commonly uses 1 part of external lubricant (PE wax or lubricant AP or ZB-60);
1.2 parts of AC whipping agents;
1 part of NC whipping agent;
PVC commonly uses 14 parts of foaming control agents (PA-530);
PVC commonly uses 1.5 parts of processing aids (ACR401);
PVC commonly uses 1 part of processing aid (ACR175);
0.5 part of wood powder treatment agent;
0.2 part of silane coupling agent;
0.5 part of titanate coupling agent;
1 part of iron oxide yellow;
The preparation technology of above-mentioned high rigid, low density PVC Wood-plastic foam plate is as follows:
(1) wollastonite fibre surface treatment
Wollastonite and silane coupling agent are put into high-speed mixer and mix about 15～20min, when temperature of charge is raised to 100 DEG C, discharge is for subsequent use.Wherein, silane coupling agent can adopt KH-550, KH-560 or KH-570.
(2) wood powder surface treatment
Wood powder and wood powder treatment agent are put into high-speed mixer and mix about 15～20min, when temperature of charge is raised to 100 DEG C, discharge is for subsequent use.Wherein, wood powder treatment agent can adopt the titanate coupling agent of pyrophosphate type, and wood powder can adopt bamboo wood powder, wood powder, shell powder or powdered rice hulls.
(3) light calcium carbonate, water-ground limestone surface treatment
Light calcium carbonate powder or heavy calcium carbonate powder are put into high-speed mixer with titanate coupling agent respectively and mix about 15～20min, when temperature of charge is raised to 110 DEG C, discharge is for subsequent use.Wherein, titanate coupling agent can adopt phosphatic type titanate coupling agent.
(4) PVC Wood-plastic foam sheet metal forming
A, when putting into high-speed mixer after other raw materials except whipping agent are weighed by formula rate and being mixed to temperature of charge and reaching 110 DEG C, add AC whipping agent and NC whipping agent; When continuing to be mixed to temperature of charge and reaching 115 DEG C, material is entered in low speed mixer, when continuing to be mixed to temperature of charge and reaching 60 DEG C, discharge is for subsequent use.
B, the material of steps A gained is dropped in high temperature conical double screw extruder, extrusion processing becomes the tabular molten materials of different thickness.
C, the molten materials that step B is obtained, become sheet material through stock mould cooling and shaping.
D, the sheet material that step C is obtained, cut into 1.22 × 2.44m through double-cut saw
2standard plate.
Thereby E, obtains high rigid, low density PVC Wood-plastic foam plate.
In the present embodiment, the operating procedure condition of high temperature conical double screw extruder is as follows: screw speed 20N/min, 100 DEG C of screw rod oil temperatures, 160 DEG C of barrel zone temperatures, 160 DEG C of merging core temperature, 160 DEG C of die temperatures, 160 DEG C of die lip temperature.In addition, the rotating speed of high-speed mixer is 1600rpm, and the rotating speed of low speed mixer is 100rpm.
In the present embodiment, foamed board performance: density: 0.56g/cm
3; MOR: 21.3MPa; Bending elastic modulus: 1830MPa; Tensile strength: 9.8MPa; Elongation at break: 9.8%; Heat-drawn wire: 82 DEG C.
Embodiment 2
Difference from Example 1 is, meter by weight, and the high rigid, low density PVC of the present embodiment Wood-plastic foam plate prescription is composed as follows:
100 parts of polyvinyl chloride resins (SG-8 type polyvinyl chloride resin);
PVC foaming regeneration abrasive dust material (40 order) 30 parts;
20 parts of MS resins (melting index MI is 2～5 for powdery, M content 50～80wt%);
30 parts of wollastonite fibres (powdery, 200 orders, particle length-to-diameter ratio 5);
10 parts of light calcium carbonates (1000 order);
10 parts of water-ground limestones (1250 order);
20 parts of wood powders (60 order);
PVC commonly uses 6 parts of one package stabilizers (lead salt one package stabilizer or rare earth composite stabilizer);
PVC commonly uses 1 part of internal lubricant (lubricant 9696 or lubricant OA6);
PVC commonly uses 1 part of external lubricant (PE wax or lubricant AP or ZB-60);
1.2 parts of AC whipping agents;
1 part of NC whipping agent;
PVC commonly uses 14 parts of foaming control agents (PA-530);
PVC commonly uses 1.5 parts of processing aids (ACR401);
PVC commonly uses 1 part of processing aid (ACR175);
0.5 part of wood powder treatment agent;
0.6 part of silane coupling agent;
0.3 part of titanate coupling agent;
1 part of iron oxide yellow;
In the present embodiment, foamed board performance: density: 0.63g/cm
3; MOR: 23.1MPa; Bending elastic modulus: 2150MPa; Tensile strength: 11.6MPa; Elongation at break: 8.2%; Heat-drawn wire: 81 DEG C.
Embodiment 3
Difference from Example 1 is, meter by weight, and the high rigid, low density PVC of the present embodiment Wood-plastic foam plate prescription is composed as follows:
100 parts of polyvinyl chloride resins (SG-8 type polyvinyl chloride resin);
PVC foaming regeneration abrasive dust material (40 order) 30 parts;
20 parts of MS resins (melting index MI is 2～5 for powdery, M content 50～80wt%);
50 parts of wollastonite fibres (powdery, 200 orders, particle length-to-diameter ratio 5);
5 parts of light calcium carbonates (1000 order);
5 parts of water-ground limestones (1250 order);
20 parts of wood powders (60 order);
PVC commonly uses 6 parts of one package stabilizers (lead salt one package stabilizer or rare earth composite stabilizer);
PVC commonly uses 1 part of internal lubricant (lubricant 9696 or lubricant OA6);
PVC commonly uses 1 part of external lubricant (PE wax or lubricant AP or ZB-60);
1.2 parts of AC whipping agents;
1 part of NC whipping agent;
PVC commonly uses 14 parts of foaming control agents (PA-530);
PVC commonly uses 1.5 parts of processing aids (ACR401);
PVC commonly uses 1 part of processing aid (ACR175);
0.5 part of wood powder treatment agent;
0.75 part of silane coupling agent;
0.15 part of titanate coupling agent;
1 part of iron oxide yellow;
In the present embodiment, foamed board performance: density: 0.65g/cm
3; MOR: 24.6MPa; Bending elastic modulus: 2580MPa; Tensile strength: 12.7MPa; Elongation at break: 6.4%; Heat-drawn wire: 85 DEG C.
Embodiment 4
Difference from Example 1 is, meter by weight, and the high rigid, low density PVC of the present embodiment Wood-plastic foam plate prescription is composed as follows:
100 parts of polyvinyl chloride resins (SG-7 type polyvinyl chloride resin);
PVC foaming regeneration abrasive dust material (50 order) 30 parts;
10 parts of MS resins (melting index MI is 2～5 for powdery, M content 50～80wt%);
50 parts of wollastonite fibres (powdery, 200 orders, particle length-to-diameter ratio 6);
5 parts of light calcium carbonates (1100 order);
5 parts of water-ground limestones (1300 order);
20 parts of wood powders (70 order);
PVC commonly uses 6 parts of one package stabilizers (lead salt one package stabilizer or rare earth composite stabilizer);
PVC commonly uses 1 part of internal lubricant (lubricant 9696 or lubricant OA6);
PVC commonly uses 1 part of external lubricant (PE wax or lubricant AP or ZB-60);
1.2 parts of AC whipping agents;
1 part of NC whipping agent;
PVC commonly uses 14 parts of foaming control agents (PA-530);
PVC commonly uses 1.5 parts of processing aids (ACR401);
PVC commonly uses 1 part of processing aid (ACR175);
0.5 part of wood powder treatment agent;
0.75 part of silane coupling agent;
0.15 part of titanate coupling agent;
1 part of iron oxide yellow;
In the present embodiment, foamed board performance: density: 0.74g/cm
3; MOR: 19.8MPa; Bending elastic modulus: 2140MPa; Tensile strength: 9.7MPa; Elongation at break: 5.1%; Heat-drawn wire: 84 DEG C.
Embodiment 5
Difference from Example 1 is, meter by weight, and the high rigid, low density PVC of the present embodiment Wood-plastic foam plate prescription is composed as follows:
100 parts of polyvinyl chloride resins (SG-7 type polyvinyl chloride resin);
PVC foaming regeneration abrasive dust material (50 order) 30 parts;
20 parts of MS resins (melting index MI is 2～5 for powdery, M content 50～80wt%);
50 parts of wollastonite fibres (powdery, 325 orders, particle length-to-diameter ratio 6);
5 parts of light calcium carbonates (1100 order);
5 parts of water-ground limestones (1300 order);
20 parts of wood powders (70 order);
PVC commonly uses 6 parts of one package stabilizers (lead salt one package stabilizer or rare earth composite stabilizer);
PVC commonly uses 1 part of internal lubricant (lubricant 9696 or lubricant OA6);
PVC commonly uses 1 part of external lubricant (PE wax or lubricant AP or ZB-60);
1.4 parts of AC whipping agents;
1.2 parts of NC whipping agents;
PVC commonly uses 15 parts of foaming control agents (PA-530);
PVC commonly uses 1.5 parts of processing aids (ACR401);
PVC commonly uses 1 part of processing aid (ACR175);
0.5 part of wood powder treatment agent;
0.75 part of silane coupling agent;
0.15 part of titanate coupling agent;
1 part of iron oxide yellow;
In the present embodiment, foamed board performance: density: 0.53g/cm
3; MOR: 22.8MPa; Bending elastic modulus: 2450MPa; Tensile strength: 10.8MPa; Elongation at break: 7.3%; Heat-drawn wire: 83 DEG C.
Embodiment 6
Difference from Example 1 is, meter by weight, and the high rigid, low density PVC of the present embodiment Wood-plastic foam plate prescription is composed as follows:
100 parts of polyvinyl chloride resins (SG-7 type polyvinyl chloride resin);
PVC foaming regeneration abrasive dust material (60 order) 30 parts;
20 parts of MS resins (melting index MI is 2～5 for powdery, M content 50～80wt%);
50 parts of wollastonite fibres (powdery, 325 orders, particle length-to-diameter ratio 8);
10 parts of light calcium carbonates (1200 order);
10 parts of water-ground limestones (1400 order);
10 parts of wood powders (80 order);
PVC commonly uses 6 parts of one package stabilizers (lead salt one package stabilizer or rare earth composite stabilizer);
PVC commonly uses 1 part of internal lubricant (lubricant 9696 or lubricant OA6);
PVC commonly uses 1 part of external lubricant (PE wax or lubricant AP or ZB-60);
1.4 parts of AC whipping agents;
1.2 parts of NC whipping agents;
PVC commonly uses 15 parts of foaming control agents (PA-530);
PVC commonly uses 1.5 parts of processing aids (ACR401);
PVC commonly uses 1 part of processing aid (ACR175);
0.25 part of wood powder treatment agent;
0.75 part of silane coupling agent;
0.3 part of titanate coupling agent;
1 part of iron oxide yellow;
In the present embodiment, foamed board performance: density: 0.55g/cm
3; MOR: 23.8MPa; Bending elastic modulus: 2330MPa; Tensile strength: 11.7MPa; Elongation at break: 10.5%; Heat-drawn wire: 81 DEG C.
Embodiment 7
Difference from Example 1 is, meter by weight, and the high rigid, low density PVC of the present embodiment Wood-plastic foam plate prescription is composed as follows:
100 parts of polyvinyl chloride resins (SG-7 type polyvinyl chloride resin);
PVC foaming regeneration abrasive dust material (60 order) 30 parts;
20 parts of MS resins (melting index MI is 2～5 for powdery, M content 50～80wt%);
50 parts of wollastonite fibres (powdery, 325 orders, particle length-to-diameter ratio 8);
5 parts of light calcium carbonates (1200 order);
5 parts of water-ground limestones (1400 order);
20 parts of wood powders (80 order);
PVC commonly uses 6 parts of one package stabilizers (lead salt one package stabilizer or rare earth composite stabilizer);
PVC commonly uses 1 part of internal lubricant (lubricant 9696 or lubricant OA6);
PVC commonly uses 1 part of external lubricant (PE wax or lubricant AP or ZB-60);
1.5 parts of AC whipping agents;
1.3 parts of NC whipping agents;
PVC commonly uses 16 parts of foaming control agents (PA-530);
PVC commonly uses 2 parts of processing aids (ACR401);
PVC commonly uses 1 part of processing aid (ACR175);
0.5 part of wood powder treatment agent;
0.75 part of silane coupling agent;
0.15 part of titanate coupling agent;
1 part of iron oxide yellow;
In the present embodiment, foamed board performance: density: 0.45g/cm
3; MOR: 19.5MPa; Bending elastic modulus: 2040MPa; Tensile strength: 8.4MPa; Elongation at break: 6.4%; Heat-drawn wire: 80 DEG C.
Claims (7)
1. a high rigid, low density PVC Wood-plastic foam plate, is characterized in that, meter by weight, and this foamed board formula is composed as follows:
100 parts of polyvinyl chloride resins; 20～40 parts, PVC foaming regeneration abrasive dust material; 5～25 parts of MS resins; 10～50 parts of wollastonite fibres; 5～25 parts of light calcium carbonates; 5～30 parts of water-ground limestones; 10～30 parts of wood powders; 4～8 parts of PVC one package stabilizers; 0.5～2.0 part of PVC internal lubricant; 0.5～1.5 part of PVC external lubricant; 0.5～2.0 part of AC whipping agent; 0.5～1.5 part of NC whipping agent; 7～20 parts of PVC foaming control agents; 1.5～5.5 parts of PVC processing aids; 0.2～1.0 part of wood powder treatment agent; 0.15～0.75 part of silane coupling agent; 0.15～0.75 part of titanate coupling agent; 0.5～2.0 part of iron oxide yellow.
2. according to high rigid, low density PVC Wood-plastic foam plate claimed in claim 1, it is characterized in that, wherein:
Polyvinyl chloride resin is SG-7 type or SG-8 type polyvinyl chloride resin;
PVC foaming regeneration abrasive dust material 40～60 orders;
MS resin powdery, is methyl methacrylate and cinnamic multipolymer, and wherein: the content of M is 50～80wt%, melting index MI is 2～5;
Wollastonite fibre powdery, 200～325 orders, particle length-to-diameter ratio >=5;
Light calcium carbonate 1000～1200 orders;
Water-ground limestone 1250～1500 orders;
Wood powder 60～90 orders;
PVC one package stabilizer is the conventional one package stabilizer of PVC: lead salt one package stabilizer or rare earth composite stabilizer;
PVC internal lubricant is the conventional internal lubricant of PVC: lubricant 9696 or lubricant OA6;
PVC external lubricant is the conventional external lubricant of PVC: PE wax or lubricant AP or ZB-60;
PVC foaming control agent is conventional foaming control agent: the PA-530 of PVC;
PVC processing aid is the conventional processing aid of PVC: 1～4 part of ACR401 processing aid, 0.5～1.5 part of ACR175 processing aid;
Silane coupling agent is KH-550, KH-560 or KH-570;
Wood powder treatment agent adopts the titanate coupling agent of pyrophosphate type, and wood powder adopts bamboo wood powder, wood powder, shell powder or powdered rice hulls;
Titanate coupling agent adopts phosphatic type titanate coupling agent.
3. according to high rigid, low density PVC Wood-plastic foam plate claimed in claim 1, it is characterized in that, the particle length-to-diameter ratio of wollastonite fibre is preferably 5～10.
4. a preparation method for high rigid, low density PVC Wood-plastic foam plate claimed in claim 1, is characterized in that, comprises the steps:
(1) wollastonite fibre surface treatment
Wollastonite and silane coupling agent are put into high-speed mixer and mix 15～20min, when temperature of charge is raised to 80～120 DEG C, discharge is for subsequent use;
(2) wood powder surface treatment
Wood powder and wood powder treatment agent are put into high-speed mixer and mix 15～20min, when temperature of charge is raised to 80～120 DEG C, discharge is for subsequent use;
(3) light calcium carbonate, water-ground limestone surface treatment
Light calcium carbonate powder or heavy calcium carbonate powder are put into high-speed mixer with titanate coupling agent respectively and mix 15～20min, when temperature of charge is raised to 100～120 DEG C, discharge is for subsequent use;
(4) PVC Wood-plastic foam sheet metal forming
A, when putting into high-speed mixer after other raw materials except whipping agent are weighed by formula rate and being mixed to temperature of charge and reaching 100～120 DEG C, add AC whipping agent and NC whipping agent; When continuing to be mixed to temperature of charge and reaching 110～120 DEG C, material is entered in low speed mixer, when continuing to be mixed to temperature of charge and reaching 50～70 DEG C, discharge is for subsequent use;
B, the material of steps A gained is dropped in high temperature conical double screw extruder, extrusion processing becomes the tabular molten materials of different thickness;
C, the molten materials that step B is obtained, become sheet material through stock mould cooling and shaping;
D, the sheet material that step C is obtained, cut into 1.22 × 2.44m through double-cut saw
2standard plate; Thereby, obtain high rigid, low density PVC Wood-plastic foam plate.
5. according to the preparation method of high rigid, low density PVC Wood-plastic foam plate claimed in claim 4, it is characterized in that, the technical indicator of this foamed board is as follows:
Density: 0.45～0.75g/cm
3; MOR: 18～25MPa; Bending elastic modulus: 1800～2600MPa; Tensile strength: 8～15MPa; Elongation at break: 5～12%; Heat-drawn wire: 80～90 DEG C.
6. according to the preparation method of high rigid, low density PVC Wood-plastic foam plate claimed in claim 4, it is characterized in that, the operating procedure condition of high temperature conical double screw extruder is as follows: screw speed 15～30N/min, 80～110 DEG C of screw rod oil temperatures, 145～185 DEG C of barrel zone temperatures, 140～160 DEG C of merging core temperature, 160～185 DEG C of die temperatures, 140～160 DEG C of die lip temperature.
7. according to the preparation method of high rigid, low density PVC Wood-plastic foam plate claimed in claim 4, it is characterized in that, the rotating speed of high-speed mixer is 1200～1800rpm, and the rotating speed of low speed mixer is 80～120rpm.
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| CN111572161B (en) * | 2019-12-30 | 2022-06-03 | 绿城装饰工程集团有限公司 | Angle-foldable PVC rigid-flexible composite board and preparation method thereof |
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