CN105015118A - Co-extrusion plate and preparation method thereof - Google Patents
Co-extrusion plate and preparation method thereof Download PDFInfo
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- CN105015118A CN105015118A CN201410182187.1A CN201410182187A CN105015118A CN 105015118 A CN105015118 A CN 105015118A CN 201410182187 A CN201410182187 A CN 201410182187A CN 105015118 A CN105015118 A CN 105015118A
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Abstract
The invention relates to a co-extrusion plate and a preparation method thereof. The co-extrusion plate sequentially comprises a surface layer, a core layer, a center layer, a core layer and a surface layer from top to bottom. The surface layers are connected to the upper surface and the lower surface of the center layer through the core layers. Materials good in glossiness serve as the surface layers, so that the appearance attractiveness of the composite plate is greatly improved. Low-cost polystyrene toughening composite materials are adopted to serve as the core layers, and the impact resistance of a whole material is improved while the cost is reduced. Materials high in bonding strength are adopted to serve as the core layers, so that the problem that cracking and layering occur easily between the surface layers and the center layer is solved well. The manufactured co-extrusion composite plate has the advantages of being attractive in appearance, good in impact resistance and long in service life.
Description
Technical field
The invention belongs to field of compound material, be specifically related to a kind of co-extrusion sheet material and preparation method thereof.
Background technology
Along with the pay attention to day by day to the forest reserves, existing wooden boards more and more replace by composite board.And common composite board often to there is cost high, appearance needs the problem of secondary landscaping treatment.
Polystyrene material has the advantages that rigidity is strong, hardness is high.Be widely used in packaging for foodstuff, electric, the field such as building decoration, sound-insulating.But the extensive application of polystyrene foamed material result also in the increase of waste pollution.Therefore p-poly-phenyl ethene waste plastic carries out recycling, is more and more paid attention to.
For polystyrene salvage material, shock resistance is poor constrains the application reclaiming polystyrene material.And traditional p-poly-phenyl ethene carries out toughness reinforcing means, be mostly to add the flexibilizer containing styrene segment, as SBS, SEBS etc., but the price of these toughening materials is generally higher, for reclaiming in polystyrene material, the cost of salvage material can be caused significantly to rise.
Polystyrene material has been widely used in steel and has moulded color steel, but the service life that color steel moulded by steel is shorter, and mechanical property is poor.If p-poly-phenyl ethylene recovery material carries out the toughening modifying of low cost, with it, for raw material, to prepare a kind of mechanical property good, and surface gloss is high, specious, the composite board of long service life, will have good market prospects.
Summary of the invention
The object of the invention is to solve the above-mentioned technical problem existed in prior art, provide a kind of cost low, shock resistance is good, and surface gloss is high, specious co-extrusion sheet material and preparation method thereof.
Technical scheme of the present invention is as follows:
A kind of co-extrusion sheet material, be followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom, top layer is connected to the upper and lower surface of center core layer by sandwich layer.
Preferably, the thickness on described top layer is 1 ~ 2mm, and the thickness of sandwich layer is 0.2 ~ 1mm, and the thickness of center core layer is 2 ~ 20mm.
Preferably, the material on described top layer is selected from polymethyl methacrylate or Merlon.
Preferably, add pigment in described skin-material to dye.
Preferably, the material of described sandwich layer is ethylene-vinyl acetate copolymer.
Preferably, described center core layer is made up of the component comprising following weight portion:
Preferably, described polystyrene is for reclaiming polystyrene, melting means 4 ~ 30g/10min (test condition 200 DEG C, 5kg).
Preferably, described polyethylene is LLDPE.
Preferably, described compatilizer is obtained by following methods:
(1) initator 0.2 ~ 0.8 part is weighed by weight, coupling agent 1 ~ 3 part, styrene 20 parts, polystyrene 100 parts, polyethylene 60 ~ 100 parts;
(2) initator and coupling agent are dissolved in styrene monomer, mix;
(3) polyethylene and polystyrene are added double screw extruder blended, in the machine barrel of extruder, add the styrene monomer being dissolved with initator and coupling agent, melt blending simultaneously, extrude pelletizing and obtain described compatilizer.
Preferably, described initator be selected from lauroyl peroxide, peroxidized t-butyl perbenzoate, peroxidating trimethylacetic acid tertiary butyl ester, methyl ethyl ketone peroxide or di-isopropyl peroxydicarbonate one or more, preferred di-isopropyl peroxydicarbonate.
Preferably, described coupling agent be selected from 3-aminopropyl triethoxysilane, γ-(methacryloxypropyl) propyl trimethoxy silicane, isopropyl three (dioctyl phosphoric acid acyloxy) titanate esters or tetra isopropyl two (dioctyl phosphito acyloxy) titanate esters one or more, preferred γ-(methacryloxypropyl) propyl trimethoxy silicane.
Found through experiments, coupling agent and initator are dissolved in styrene monomer that p-poly-phenyl ethene and polyethylene carry out reactively blending modification again, styrene and poly percent grafting significantly promote, and the obtained more traditional compatilizer of the compatibilization effect of compatilizer to PS and PE is better.When to adopt simultaneously di-isopropyl peroxydicarbonate as initator and γ-(methacryloxypropyl) propyl trimethoxy silicane as coupling agent time, the increase-volume efficiency of the compatilizer that the increase-volume efficiency of obtained compatilizer obtains than other initators and coupling agent improves 15 ~ 20%.
Polyvinyl butyral has good toughness, the advantage that shock resistance is high, in polystyrene/polyethylene system, add polyvinyl butyral not only can improve compatibility between polystyrene and polyethylene, the shock resistance of polystyrene material can be improved simultaneously.
Preferably, described antioxidant is selected from (gathers [[6-[(1, 1, 3, 3-tetramethyl butyl) amine]-1, 3, 5-triazine-2, 4-bis-base] [(2, 2, 6, 6-tetramethyl-4-piperidines) imines]-1, 6-bis-dihexyl [(2, 2, 6, 6-tetramethyl-4-piperidines) imines]]]), (2-(3, 5-di-t-butyl-2-hydroxyphenyl)-5-chlorobenzotriazole), (1, 3, 5-tri-(the 4-tert-butyl group-3-hydroxyl-2, 6-dimethyl benzyl)-1, 3, 5-triazine-2, 4, 6-(1H, 3H, 5H)-triketone) or 2, one or more in 6-di-tert-butyl-4-methy phenol.
Preferably, described antioxidant is (1,3,5-tri-(the 4-tert-butyl group-3-hydroxyl-2,6-dimethyl benzyl)-1,3,5-triazines-2,4,6-(1H, 3H, 5H)-triketone) and 2,6-di-tert-butyl-4-methy phenol by weight being the mixture of 3:1.
Described blowing agent is Celogen Az.
A kind of above-mentioned co-extrusion preparation of plates method, comprises the following steps:
(1) weigh polystyrene 100 parts by weight, polyethylene 5 ~ 20 parts, compatilizer 2 ~ 6 parts, polyvinyl butyral 2 ~ 8 parts, 1 ~ 3 part, antioxidant, mixes;
(2) add in double screw extruder by the raw material of mixing in step (1), melt blending is extruded, cooling and dicing, obtained center core layer raw material;
(3) center core layer raw material is mixed with 0.5 ~ 2 part of blowing agent, add single screw extrusion machine, skin-material and core material are added other two single screw extrusion machines respectively, three extruders are extruded by same coextrusion die head, the obtained co-extrusion sheet material being followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom.
Preferably, the extrusion temperature in described step (2) is 170 ~ 200 DEG C, and screw speed is 150 ~ 220R/min.
Preferably, in the process of preparation center core layer raw material, first polystyrene, polyethylene, polyvinyl butyral and antioxidant are carried out blended, when extruding in double screw extruder, add at the feeding place, side in screw rod stage casing and soaked cinnamic compatilizer, wherein contain 0.2% weight portion initator in styrene, melt blending is extruded, cooling and dicing, obtained described center core layer raw material.
The initator added in styrene is identical with initator Application Range when preparing compatilizer.
Add extruder again after being soaked by compatilizer styrene to neutralize other raw materials and carry out blended, can polystyrene degradation be prevented, promote the increase-volume efficiency of compatilizer, thus improve the shock resistance of center core layer raw material.
Compared to the prior art, beneficial effect of the present invention is:
(1) the present invention adopts material that glossiness is good as top layer, significantly add the surface aesthetics of composite board, adopt the toughening polystyrene composite of low cost as sandwich layer, while reducing costs, add the shock resistance of material monolithic, adopt the high material of adhesion strength can solve the problem of layering easy to crack between top layer and center core layer preferably as sandwich layer, obtained coextru-lamination plate has specious, impact property is good, the advantage of long service life.
(2) center core layer material of the present invention does not adopt the toughening material of the costlinesses such as SBS rubber, and adopt lower-cost polythene material p-poly-phenyl ethene to carry out toughness reinforcing, reduce production cost, make modified recovery polystyrene material have good cost performance and the good market competitiveness.
(3) production technology of polystyrene compatilizer is improved in center core layer material preparation process of the present invention, and the operation of compatilizer, in the process of producing compatilizer, by being optimized formula, add styrene monomer, improve the increase-volume efficiency of compatilizer, obtained compatilizer can be directly used in polystyrene/polythene material and carry out modification, easy to use pollution-free.
(4) this law bright in compatilizer in use immersion treatment is carried out to compatilizer styrene, improve further the physical property of increase-volume efficiency and polystyrene/polythene material.
Detailed description of the invention
Below in conjunction with embodiment, the present invention will be further described, and in embodiment except specified otherwise, content is weight portion.
Embodiment 1
A kind of co-extrusion sheet material, be followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom, top layer is connected to the upper and lower surface of center core layer by sandwich layer, and the thickness on described top layer is 1mm, and the thickness of sandwich layer is 0.2mm, and the thickness of center core layer is 2mm.
Described co-extrusion sheet material obtains by the following method:
(1) compatilizer is prepared
Weigh initator 0.2 part by weight, coupling agent 1 part, styrene 20 parts, polystyrene 100 parts, polyethylene 60 parts; Initator and coupling agent are dissolved in styrene monomer, mix; Polyethylene and polystyrene are added double screw extruder blended, in the machine barrel of extruder, add the styrene monomer being dissolved with initator and coupling agent, melt blending simultaneously, extrude pelletizing and obtain described compatilizer;
Wherein said initator is selected from lauroyl peroxide, and described coupling agent is selected from 3-aminopropyl triethoxysilane;
(2) weigh polystyrene 100 parts by weight, polyethylene 5 parts, compatilizer 2 parts, polyvinyl butyral 2 parts, 1 part, antioxidant, mixes;
Wherein said polystyrene is for reclaiming polystyrene, melting means 4g/10min, and described polyethylene is LLDPE, described antioxidant is selected from (gathers [[6-[(1,1,3,3-tetramethyl butyl) amine]-1,3,5-triazines-2,4-bis-base] [(2,2,6,6-tetramethyl-4-piperidines) imines]-1,6-bis-dihexyl [(2,2,6,6-tetramethyl-4-piperidines) imines]]]);
(3) add in double screw extruder by the raw material of mixing in step (2), melt blending is extruded, and extrusion temperature is 170 ~ 200 DEG C, and screw speed is 150 ~ 220R/min, cooling and dicing, obtained center core layer raw material;
(4) center core layer raw material is mixed with 0.5 part of Celogen Az, add single screw extrusion machine, skin-material polymethyl methacrylate or Merlon and core material ethylene-vinyl acetate copolymer are added other two single screw extrusion machines respectively, three extruders are extruded by same coextrusion die head, the obtained co-extrusion sheet material being followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom.
Embodiment 2
A kind of co-extrusion sheet material, be followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom, top layer is connected to the upper and lower surface of center core layer by sandwich layer, and the thickness on described top layer is 2mm, and the thickness of sandwich layer is 1mm, and the thickness of center core layer is 20mm.
Described co-extrusion sheet material obtains by the following method:
(1) compatilizer is prepared
Weigh initator 0.8 part by weight, coupling agent 3 parts, styrene 20 parts, polystyrene 100 parts, polyethylene 100 parts; Initator and coupling agent are dissolved in styrene monomer, mix; Polyethylene and polystyrene are added double screw extruder blended, in the machine barrel of extruder, add the styrene monomer being dissolved with initator and coupling agent, melt blending simultaneously, extrude pelletizing and obtain described compatilizer;
Wherein said initator is selected from peroxidized t-butyl perbenzoate, and described coupling agent is selected from γ-(methacryloxypropyl) propyl trimethoxy silicane;
(2) weigh polystyrene 100 parts by weight, polyethylene 20 parts, compatilizer 6 parts, polyvinyl butyral 8 parts, 3 parts, antioxidant, mixes;
Wherein said polystyrene is for reclaiming polystyrene, melting means 30g/10min; Described polyethylene is recycle polyethylene;
Described antioxidant is selected from (1,3,5-tri-(the 4-tert-butyl group-3-hydroxyl-2,6-dimethyl benzyl)-1,3,5-triazines-2,4,6-(1H, 3H, 5H)-triketone);
(3) add in double screw extruder by the raw material of mixing in step (2), melt blending is extruded, and extrusion temperature is 170 ~ 200 DEG C, and screw speed is 150 ~ 220R/min, cooling and dicing, obtained center core layer raw material;
(4) center core layer raw material is mixed with 2 parts of Celogen Azs, add single screw extrusion machine, skin-material polymethyl methacrylate or Merlon and core material ethylene-vinyl acetate copolymer are added other two single screw extrusion machines respectively, three extruders are extruded by same coextrusion die head, the obtained co-extrusion sheet material being followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom.
Embodiment 3
A kind of co-extrusion sheet material, be followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom, top layer is connected to the upper and lower surface of center core layer by sandwich layer, and the thickness on described top layer is 1.5mm, and the thickness of sandwich layer is 0.6mm, and the thickness of center core layer is 12mm.
Described co-extrusion sheet material obtains by the following method:
(1) compatilizer is prepared
Weigh initator 0.6 part by weight, coupling agent 2 parts, styrene 20 parts, polystyrene 100 parts, polyethylene 80 parts; Initator and coupling agent are dissolved in styrene monomer, mix; Polyethylene and polystyrene are added double screw extruder blended, in the machine barrel of extruder, add the styrene monomer being dissolved with initator and coupling agent, melt blending simultaneously, extrude pelletizing and obtain described compatilizer.
Wherein said initator selects di-isopropyl peroxydicarbonate, and described coupling agent is selected from γ-(methacryloxypropyl) propyl trimethoxy silicane;
(2) weigh polystyrene 100 parts by weight, polyethylene 12 parts, compatilizer 4 parts, polyvinyl butyral 5 parts, 2 parts, antioxidant, mixes;
Wherein said polystyrene is for reclaiming polystyrene, melting means 15g/10min, and described polyethylene is LLDPE;
Described antioxidant is (1,3,5-tri-(the 4-tert-butyl group-3-hydroxyl-2,6-dimethyl benzyl)-1,3,5-triazine-2,4,6-(1H, 3H, 5H)-triketone) and 2,6-di-tert-butyl-4-methy phenol by weight being the mixture of 3:1;
(3) add in double screw extruder by the raw material of mixing in step (2), melt blending is extruded, and extrusion temperature is 170 ~ 200 DEG C, and screw speed is 150 ~ 220R/min, cooling and dicing, obtained center core layer raw material;
(4) center core layer raw material is mixed with 1.2 parts of Celogen Azs, add single screw extrusion machine, skin-material polymethyl methacrylate or Merlon and core material ethylene-vinyl acetate copolymer are added other two single screw extrusion machines respectively, three extruders are extruded by same coextrusion die head, the obtained co-extrusion sheet material being followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom.
Embodiment 4
A kind of co-extrusion sheet material, be followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom, top layer is connected to the upper and lower surface of center core layer by sandwich layer, and the thickness on described top layer is 1.2mm, and the thickness of sandwich layer is 0.5mm, and the thickness of center core layer is 18mm.
Described co-extrusion sheet material obtains by the following method:
(1) compatilizer is prepared
Weigh initator 0.6 part by weight, coupling agent 2 parts, styrene 20 parts, polystyrene 100 parts, polyethylene 80 parts; Initator and coupling agent are dissolved in styrene monomer, mix; Polyethylene and polystyrene are added double screw extruder blended, in the machine barrel of extruder, add the styrene monomer being dissolved with initator and coupling agent, melt blending simultaneously, extrude pelletizing and obtain described compatilizer.
Wherein said initator is di-isopropyl peroxydicarbonate, and described coupling agent is selected from γ-(methacryloxypropyl) propyl trimethoxy silicane;
(2) weigh polystyrene 100 parts by weight, polyethylene 12 parts, compatilizer 4 parts, polyvinyl butyral 5 parts, 3 parts, antioxidant, other components except compatilizer are mixed;
Wherein said polystyrene is for reclaiming polystyrene, melting means 15g/10min, and described polyethylene is LLDPE;
Described antioxidant is (1,3,5-tri-(the 4-tert-butyl group-3-hydroxyl-2,6-dimethyl benzyl)-1,3,5-triazine-2,4,6-(1H, 3H, 5H)-triketone) and 2,6-di-tert-butyl-4-methy phenol by weight being the mixture of 3:1;
(3) raw material of mixing in step (2) is added in double screw extruder, the cinnamic compatilizer soaked containing 0.2% weight portion di-isopropyl peroxydicarbonate is added at the feeding place, side in screw rod stage casing, melt blending is extruded, extrusion temperature is 170 ~ 200 DEG C, screw speed is 150 ~ 220R/min, cooling and dicing, obtained center core layer raw material;
(4) center core layer raw material is mixed with 1.5 parts of Celogen Azs, add single screw extrusion machine, skin-material polymethyl methacrylate or Merlon and core material ethylene-vinyl acetate copolymer are added other two single screw extrusion machines respectively, three extruders are extruded by same coextrusion die head, the obtained co-extrusion sheet material being followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom.
Embodiment 5
A kind of co-extrusion sheet material, be followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom, top layer is connected to the upper and lower surface of center core layer by sandwich layer, and the thickness on described top layer is 1mm, and the thickness of sandwich layer is 0.4mm, and the thickness of center core layer is 20mm.
Described co-extrusion sheet material obtains by the following method:
(1) compatilizer is prepared
Weigh initator 0.6 part by weight, coupling agent 2 parts, styrene 20 parts, polystyrene 100 parts, polyethylene 80 parts; Initator and coupling agent are dissolved in styrene monomer, mix; Polyethylene and polystyrene are added double screw extruder blended, in the machine barrel of extruder, add the styrene monomer being dissolved with initator and coupling agent, melt blending simultaneously, extrude pelletizing and obtain described compatilizer.
Wherein said initator selects di-isopropyl peroxydicarbonate, and described coupling agent is selected from γ-(methacryloxypropyl) propyl trimethoxy silicane;
(2) weigh polystyrene 100 parts by weight, polyethylene 20 parts, compatilizer 6 parts, polyvinyl butyral 8 parts, 3 parts, antioxidant, other components except compatilizer are mixed;
Wherein said polystyrene is for reclaiming polystyrene, melting means 15g/10min, and described polyethylene is LLDPE;
Described antioxidant is (1,3,5-tri-(the 4-tert-butyl group-3-hydroxyl-2,6-dimethyl benzyl)-1,3,5-triazine-2,4,6-(1H, 3H, 5H)-triketone) and 2,6-di-tert-butyl-4-methy phenol by weight being the mixture of 3:1;
(3) raw material of mixing in step (2) is added in double screw extruder, the cinnamic compatilizer soaked containing 0.2% weight portion di-isopropyl peroxydicarbonate is added at the feeding place, side in screw rod stage casing, melt blending is extruded, extrusion temperature is 170 ~ 200 DEG C, screw speed is 150 ~ 220R/min, cooling and dicing, obtained center core layer raw material;
(4) center core layer raw material is mixed with 1.6 parts of Celogen Azs, add single screw extrusion machine, skin-material polymethyl methacrylate or Merlon and core material ethylene-vinyl acetate copolymer are added other two single screw extrusion machines respectively, three extruders are extruded by same coextrusion die head, the obtained co-extrusion sheet material being followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom.
Carry out performance test to co-extrusion sheet material obtained in embodiment, test result is as follows:
Table 1
The above embodiment is preferred embodiments of the present invention, is not limit the scope of the present invention, therefore all equivalences done according to the principle described in the present patent application the scope of the claims change or modify, all should in patent claim of the present invention.
Claims (10)
1. a co-extrusion sheet material, is characterized in that, described co-extrusion sheet material is followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom, and top layer is connected to the upper and lower surface of center core layer by sandwich layer.
2. a kind of co-extrusion sheet material according to claim 1, is characterized in that, the material on described top layer is selected from polymethyl methacrylate or Merlon.
3. a kind of co-extrusion sheet material according to claim 1, is characterized in that, the material of described sandwich layer is ethylene-vinyl acetate copolymer.
4. a kind of co-extrusion sheet material according to claim 1, it is characterized in that, described center core layer is made up of the component comprising following weight portion:
5. a kind of co-extrusion sheet material according to claim 1, is characterized in that, described polystyrene is for reclaiming polystyrene, melting means 4 ~ 30g/10min.
6. a kind of co-extrusion sheet material according to claim 4, it is characterized in that, described compatilizer is obtained by following methods:
(1) initator 0.2 ~ 0.8 part is weighed by weight, coupling agent 1 ~ 3 part, styrene 20 parts, polystyrene 100 parts, polyethylene 60 ~ 100 parts;
(2) initator and coupling agent are dissolved in styrene monomer, mix;
(3) polyethylene and polystyrene are added double screw extruder blended, in the machine barrel of extruder, add the styrene monomer being dissolved with initator and coupling agent, melt blending simultaneously, extrude pelletizing and obtain described compatilizer.
7. a kind of co-extrusion sheet material according to claim 6, it is characterized in that, described initator be selected from lauroyl peroxide, peroxidized t-butyl perbenzoate, peroxidating trimethylacetic acid tertiary butyl ester, methyl ethyl ketone peroxide or di-isopropyl peroxydicarbonate one or more, preferred di-isopropyl peroxydicarbonate.
8. a kind of co-extrusion sheet material according to claim 6, it is characterized in that, described coupling agent be selected from 3-aminopropyl triethoxysilane, γ-(methacryloxypropyl) propyl trimethoxy silicane, isopropyl three (dioctyl phosphoric acid acyloxy) titanate esters or tetra isopropyl two (dioctyl phosphito acyloxy) titanate esters one or more, preferred γ-(methacryloxypropyl) propyl trimethoxy silicane.
9. a kind of co-extrusion sheet material according to claim 6, it is characterized in that, described antioxidant is selected from (gathers [[6-[(1, 1, 3, 3-tetramethyl butyl) amine]-1, 3, 5-triazine-2, 4-bis-base] [(2, 2, 6, 6-tetramethyl-4-piperidines) imines]-1, 6-bis-dihexyl [(2, 2, 6, 6-tetramethyl-4-piperidines) imines]]]), (2-(3, 5-di-t-butyl-2-hydroxyphenyl)-5-chlorobenzotriazole), (1, 3, 5-tri-(the 4-tert-butyl group-3-hydroxyl-2, 6-dimethyl benzyl)-1, 3, 5-triazine-2, 4, 6-(1H, 3H, 5H)-triketone) or 2, one or more in 6-di-tert-butyl-4-methy phenol.
10. the co-extrusion preparation of plates method as described in claim 1 ~ 9, is characterized in that, comprise the following steps:
(1) weigh polystyrene 100 parts by weight, polyethylene 5 ~ 20 parts, compatilizer 2 ~ 6 parts, polyvinyl butyral 2 ~ 8 parts, 1 ~ 3 part, antioxidant, mixes;
(2) add in double screw extruder by the raw material of mixing in step (1), melt blending is extruded, cooling and dicing, obtained center core layer raw material;
(3) center core layer raw material is mixed with 0.5 ~ 2 part of blowing agent, add single screw extrusion machine, skin-material and core material are added other two single screw extrusion machines respectively, three extruders are extruded by same coextrusion die head, the obtained co-extrusion sheet material being followed successively by top layer, sandwich layer, center core layer, sandwich layer and top layer from top to bottom.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501197A (en) * | 2018-12-06 | 2019-03-22 | 江苏科技大学 | A kind of good hollow composite material building template of anti-flammability and its processing method and recovery method |
| CN109666215A (en) * | 2018-12-06 | 2019-04-23 | 江苏科技大学 | A kind of high-intensity hollow composite material building mould board and its processing method and recovery method |
-
2014
- 2014-04-30 CN CN201410182187.1A patent/CN105015118A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109501197A (en) * | 2018-12-06 | 2019-03-22 | 江苏科技大学 | A kind of good hollow composite material building template of anti-flammability and its processing method and recovery method |
| CN109666215A (en) * | 2018-12-06 | 2019-04-23 | 江苏科技大学 | A kind of high-intensity hollow composite material building mould board and its processing method and recovery method |
| CN109666215B (en) * | 2018-12-06 | 2021-11-12 | 江苏科技大学 | High-strength hollow composite material building template and processing method and recycling method thereof |
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