CN105906962A - Polystyrene/high-density polyethylene blended high-strength extruded sheet and production method - Google Patents
Polystyrene/high-density polyethylene blended high-strength extruded sheet and production method Download PDFInfo
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- CN105906962A CN105906962A CN201610287119.0A CN201610287119A CN105906962A CN 105906962 A CN105906962 A CN 105906962A CN 201610287119 A CN201610287119 A CN 201610287119A CN 105906962 A CN105906962 A CN 105906962A
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L25/00—Compositions of, homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring; Compositions of derivatives of such polymers
- C08L25/02—Homopolymers or copolymers of hydrocarbons
- C08L25/04—Homopolymers or copolymers of styrene
- C08L25/06—Polystyrene
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/06—Properties of polyethylene
- C08L2207/062—HDPE
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2207/00—Properties characterising the ingredient of the composition
- C08L2207/20—Recycled plastic
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
Abstract
The invention discloses a polystyrene/high-density polyethylene blended high-strength extruded sheet. The polystyrene/high-density polyethylene blended high-strength extruded sheet comprises a fresh polystyrene material, a recycled polystyrene material, high-density polyethylene, styrene-sodium acrylate, polydimethylsiloxane, decabromodiphenyl ether, antimonous oxide, color master batch, benzoyl peroxide butyl ester, benzoyl peroxide, polyethylene grafted zinc maleate and foaming agent. The invention provides a production method correspondingly to obtain the extruded sheet with good performance. The polystyrene/high-density polyethylene blended high-strength extruded sheet and the production method have the advantages that the recycled polystyrene material and the fresh polystyrene material are used jointly for producing the high-strength extruded sheet, so that production cost is reduced greatly; by dealing with the chain scission problem of the recycled material, the recycled material has better performance than ordinary waste; through addition of the auxiliary material polyethylene, proper solubilizing agent and other additives, product tenacity is improved, and the problems of embrittlement and easiness in breakage are solved; the extruded sheet obtained according to the production method has high strength, good flame retardation performance and good heat insulation performance.
Description
Technical field
The present invention relates to a kind of wallboard, be specifically related to the high intensity extruded sheet that a kind of polystyrene/high density polyethylene (HDPE) is blended
And preparation method thereof.
Background technology
On market, existing external-wall heat-insulation material mainly uses and changes benzene plate, extruded sheet and polyurethane, and wherein benzene plate is generally the least expensive,
Heat insulation effect is general, can absorb water and deform, and needs to do some other waterproof measure extruded sheet such as grade after finishing heat-insulation layer
Comparing benzene plate the most a lot, thermal conductivity ratio benzene plate is low, and the little higher polyurethane of price is performance inside existing insulation material
Best one, the insulation material in the field such as refrigerator freezer is exactly polyurethane, and heat conductivity is well below benzene plate and squeezes
Moulding plate, the polyurethane insulation coating of substantially one half thickness just can reach benzene plate and the heat insulation effect of extruded sheet original thickness, no
Cross price to exceed much than benzene plate and extruded sheet；The heat-insulation and heat-preservation of extruded sheet is strong, crushing resistance strong, energy is moistureproof, and
Environmental protection；The intensity of extruded sheet itself is higher, thus causes sheet material more crisp, the most pliable, easily makes sheet material damage, ftractures；
Poor air permeability and the shortcoming such as price is higher.Polystyrene plastics is a kind of general-purpose plastics having many uses, main point of application
For injection-molded item, extruded product and foamed product three major types, polystyrene plastics goods are because of its low raw-material cost, performance
Excellence, of many uses and develop quickly, the most occupied foam article prostatitis.At present, more polystyrene plastics
Goods, are i.e. rejected with rear, and the quantity of refuse of formation is bigger, cause more serious white pollution problems, and these are white
Polluter can not be from degraded, if white pollution problems to be solved is accomplished by these waste or used plastics are carried out recycling.
The polystyrene waste plastic reclaimed, it is generally required to through hot melt, filter, decolour, recrystallization, the step such as pelletize,
This step is easily caused molecule chain break, uses the polystyrene reclaimed materials after these chain ruptures to be directly used in wallboard raw
Producing, its product strength obtained is relatively low, and properties of product are more inferior, does not reaches preferably recovering effect.
Summary of the invention
Goal of the invention: present invention aim at for the deficiencies in the prior art, it is provided that a kind of good heat insulating, fire-retardant
High intensity extruded sheet that polystyrene/high density polyethylene (HDPE) is blended and preparation method thereof.
Technical scheme: the high intensity extruded sheet that a kind of polystyrene/high density polyethylene (HDPE) of the present invention is blended, including
Following component:
In terms of parts by weight.
Preferably, the high intensity extruded sheet that described polystyrene/high density polyethylene (HDPE) is blended includes following component:
In terms of parts by weight.
Preferably, the carrier of described Masterbatch is perfluoroethylene-propylene.
The present invention also provides for the preparation method of the high intensity extruded sheet that above-mentioned polystyrene/high density polyethylene (HDPE) is blended, including
Following steps:
(1) the polystyrene reclaimed materials through desolventing technology is added in batch mixer, be heated under logical condition of nitrogen gas
150～200 DEG C, and add benzoyl peroxide butyl ester and benzoyl peroxide, after mix homogeneously insulated and stirred 2～5h
Stop stirring and be cooled to 50～80 DEG C；
(2) system in step (1) adds polystyrene virgin material, high density polyethylene (HDPE), Masterbatch and poly-second
Alkene grafted maleic zinc, is again heated to 180～250 DEG C under logical condition of nitrogen gas, by mix homogeneously insulated and stirred
0.5～1.5h, add deca-BDE, antimony oxide, Styrene And Chloroalkyl Acrylates sodium and polydimethylsiloxane and continue stirring
0.5～1.5h；After being lowered the temperature by system temperature, pelletize processes；
(3) pellet step (2) obtained is sent in the feeding chamber of extruding machine, and injects foaming agent, is extruded into
Type；
(4) extruded sheet exported by extruding machine is transmitted through several jockey pulleys, and lower the temperature in transmitting procedure, cooling
Speed remains 2～5 DEG C/S, is dried and trimming processes.
Preferably, described extruding machine is divided into a double screw extruder and No. two single screw extrusion machines；A described twin screw
Extruder is divided into 12 working regions, by charging aperture the temperature of each working region be set as successively 180～185 DEG C,
185～195 DEG C, 185～195 DEG C, 190～200 DEG C, 225～235 DEG C, 195～205 DEG C, 195～205 DEG C, 195～205 DEG C,
225～235 DEG C, 225～235 DEG C, 195～205 DEG C, 195～205 DEG C；Described No. two single screw extrusion machines are divided into 9 each works
Making region, by feed end, the first seven is set as 175～185 DEG C with the temperature of the 9th working region, the 8th work
The temperature in region is set as 195～205 DEG C.
Preferably, for reducing the shear heat between screw speed and raw material, thus the density of sheet material is increased, it is ensured that sending out
Reaching during bubble to close abscess, promote comprcssive strength, the screw speed of a described double screw extruder is 150～220
Rpm, the screw speed of No. two single screw extrusion machines is 8～15rpm.
Preferably, in step (3), foaming agent injects in the 6th working region of a described double screw extruder.
Preferably, described in step (3), during extrusion moulding, top board temperature controls is 60～100 DEG C, lower platen temperature
Degree control is 60～100 DEG C.
Beneficial effect: beneficial effect: (1) present invention uses reclaimed materials collocation polystyrene virgin material to prepare the extrusion molding of high intensity
Plate, greatly reduces production cost, and the problem that chain is disconnected can occur in reclaimed materials processing procedure, by adding oxygen in the present invention
Change benzoyl butyl ester and reclaimed materials first processed by benzoyl peroxide dual-component catalyst, promote the chain disconnected again to increase,
Making it have ratio general reclaimed materials preferably quality, production cost is low improves product strength simultaneously reducing；(2) extruded sheet
With the polystyrene containing phenyl ring as major ingredient, the extruded sheet obtained generally there are that matter is crisp, the problem of frangibility, and the present invention passes through
With polystyrene as major ingredient, with polyethylene as adjuvant, add suitable solubilizing agent and other additives, improve product
Toughness, solve that matter is crisp, the problem of frangibility；(3) preparation method that the present invention provides selects suitable mixture temperature
And screw speed, reduce the shear heat between screw speed and raw material, thus increase the density of sheet material；Simultaneously low
Inject foaming agent under the conditions of screw speed, contribute to generating Guan Bi abscess, reduce cell density, improve sheet material hardness, with
Shi Tigao heat insulation effect.
Detailed description of the invention
Below by embodiment, technical solution of the present invention is described in detail, but protection scope of the present invention is not limited to
Described embodiment.
Embodiment 1: the high intensity extruded sheet that a kind of polystyrene/high density polyethylene (HDPE) is blended includes following component:
In terms of parts by weight.
The carrier of described Masterbatch is perfluoroethylene-propylene.
The preparation method of the high intensity extruded sheet that above-mentioned polystyrene/high density polyethylene (HDPE) is blended comprises the steps:
(1) the polystyrene reclaimed materials through desolventing technology is added in batch mixer, be heated under logical condition of nitrogen gas
180 DEG C, and add stopping after benzoyl peroxide butyl ester and benzoyl peroxide, mix homogeneously insulated and stirred 2.5h
Stir and be cooled to 65 DEG C；
(2) system in step (1) adds polystyrene virgin material, high density polyethylene (HDPE), Masterbatch and poly-second
Alkene grafted maleic zinc, is again heated to 205 DEG C under logical condition of nitrogen gas, by mix homogeneously insulated and stirred 1h, adds
Enter deca-BDE, antimony oxide, Styrene And Chloroalkyl Acrylates sodium and polydimethylsiloxane and continue stirring 0.8h；By body
It it is pelletize process after greenhouse cooling；
(3) pellet step (2) obtained is sent in the feeding chamber of extruding machine, and injects foaming agent, is extruded into
Type；Described extruding machine is divided into a double screw extruder and No. two single screw extrusion machines；A described double screw extruder
Be divided into 12 working regions, by charging aperture the temperature of each working region be set as successively 185 DEG C, 190 DEG C,
190℃、195℃、230℃、200℃、200℃、200℃、230℃、230℃、200℃、200℃；Described two
Number single screw extrusion machine is divided into 9 each working regions, and by feed end, temperature of the first seven and the 9th working region sets
Being 180 DEG C, the temperature of the 8th working region is set as 200 DEG C；The screw speed of a number double screw extruder is 180
Rpm, the screw speed of No. two single screw extrusion machines is 10rpm；The material mouth pressure of No. two single screw extrusion machines is 15MPa；
During extrusion moulding, top board temperature controls is 80 DEG C, and it is 80 DEG C that lower platen temperature controls；Foaming agent is in described one
6th working region of number double screw extruder is injected；
(4) extruded sheet exported by extruding machine is transmitted through several jockey pulleys, and lower the temperature in transmitting procedure, cooling
Speed remains 2.5 DEG C/S, is dried and trimming processes.
Embodiment 2: the high intensity extruded sheet that a kind of polystyrene/high density polyethylene (HDPE) is blended includes following component:
In terms of parts by weight.
The carrier of described Masterbatch is perfluoroethylene-propylene.
The preparation method of the high intensity extruded sheet that above-mentioned polystyrene/high density polyethylene (HDPE) is blended comprises the steps:
(1) the polystyrene reclaimed materials through desolventing technology is added in batch mixer, be heated under logical condition of nitrogen gas
150 DEG C, and stop stirring after adding benzoyl peroxide butyl ester and benzoyl peroxide, mix homogeneously insulated and stirred 2h
Mix and be cooled to 50 DEG C；
(2) system in step (1) adds polystyrene virgin material, high density polyethylene (HDPE), Masterbatch and poly-second
Alkene grafted maleic zinc, is again heated to 180 DEG C under logical condition of nitrogen gas, by mix homogeneously insulated and stirred 0.5h,
Add deca-BDE, antimony oxide, Styrene And Chloroalkyl Acrylates sodium and polydimethylsiloxane and continue stirring 0.5h；Will
After system temperature cooling, pelletize processes；
(3) pellet step (2) obtained is sent in the feeding chamber of extruding machine, and injects foaming agent, is extruded into
Type；Described extruding machine is divided into a double screw extruder and No. two single screw extrusion machines；A described double screw extruder
Be divided into 12 working regions, by charging aperture the temperature of each working region be set as successively 180 DEG C, 185 DEG C,
185℃、190℃、225℃、195℃、195℃、195℃、225℃、225℃、195℃、195℃；No. two lists
Screw extruder is divided into 9 each working regions, and by feed end, the first seven is set as with the temperature of the 9th working region
175 DEG C, the temperature of the 8th working region is set as 195 DEG C；The screw speed of a number double screw extruder is 150
Rpm, the screw speed of No. two single screw extrusion machines is 8rpm；The material mouth pressure of No. two single screw extrusion machines is 8MPa；
During extrusion moulding, top board temperature controls is 60 DEG C, and it is 60 DEG C that lower platen temperature controls；Foaming agent is in described one
6th working region of number double screw extruder is injected；
(4) extruded sheet exported by extruding machine is transmitted through several jockey pulleys, and lower the temperature in transmitting procedure, cooling
Speed remains 2 DEG C/S, is dried and trimming processes.
Embodiment 3: the high intensity extruded sheet that a kind of polystyrene/high density polyethylene (HDPE) is blended includes following component:
In terms of parts by weight.
The carrier of described Masterbatch is perfluoroethylene-propylene.
The preparation method of the high intensity extruded sheet that above-mentioned polystyrene/high density polyethylene (HDPE) is blended comprises the steps:
(1) the polystyrene reclaimed materials through desolventing technology is added in batch mixer, be heated under logical condition of nitrogen gas
200 DEG C, and stop stirring after adding benzoyl peroxide butyl ester and benzoyl peroxide, mix homogeneously insulated and stirred 5h
Mix and be cooled to 80 DEG C；
(2) system in step (1) adds polystyrene virgin material, high density polyethylene (HDPE), Masterbatch and poly-second
Alkene grafted maleic zinc, is again heated to 250 DEG C under logical condition of nitrogen gas, by mix homogeneously insulated and stirred 1.5h,
Add deca-BDE, antimony oxide, Styrene And Chloroalkyl Acrylates sodium and polydimethylsiloxane and continue stirring 1.5h；Will
After system temperature cooling, pelletize processes；
(3) pellet step (2) obtained is sent in the feeding chamber of extruding machine, and injects foaming agent, is extruded into
Type；Described extruding machine is divided into a double screw extruder and No. two single screw extrusion machines；A described double screw extruder
Be divided into 12 working regions, by charging aperture the temperature of each working region be set as successively 185 DEG C, 195 DEG C,
195℃、200℃、235℃、205℃、205℃、205℃、235℃、235℃、205℃、205℃；Described two
Number single screw extrusion machine is divided into 9 each working regions, and by feed end, temperature of the first seven and the 9th working region sets
Being 185 DEG C, the temperature of the 8th working region is set as 205 DEG C；The screw speed of a number double screw extruder is 220
Rpm, the screw speed of No. two single screw extrusion machines is 15rpm；The material mouth pressure of No. two single screw extrusion machines is 20MPa；
During extrusion moulding, top board temperature controls is 100 DEG C, and it is 100 DEG C that lower platen temperature controls；Foaming agent is in described
6th working region of a number double screw extruder is injected；
(4) extruded sheet exported by extruding machine is transmitted through several jockey pulleys, and lower the temperature in transmitting procedure, cooling
Speed remains 5 DEG C/S, is dried and trimming processes.
Embodiment 1～3 product that this formula and method obtain is used to be shown in Table 1 with the data of existing product performance comparison
Table 1 embodiment 1～3 product and the data of existing product performance comparison
Although as it has been described above, represented and described the present invention with reference to specific preferred embodiment, but it shall not be construed as
Restriction to the present invention self.Under the spirit and scope of the present invention premise defined without departing from claims, can be right
Various changes can be made in the form and details for it.
Claims (8)
1. the high intensity extruded sheet that polystyrene/high density polyethylene (HDPE) is blended, it is characterised in that include following component:
In terms of parts by weight.
The high intensity extruded sheet that polystyrene/high density polyethylene (HDPE) the most according to claim 1 is blended, its feature exists
In including following component:
In terms of parts by weight.
3. the high intensity extruded sheet being blended according to the polystyrene/high density polyethylene (HDPE) described in any one of claim 1～2,
It is characterized in that: the carrier of described Masterbatch is perfluoroethylene-propylene.
4. the high intensity extruded sheet that the polystyrene/high density polyethylene (HDPE) as described in any one of claim 1～2 is blended
Preparation method, it is characterised in that comprise the steps:
(1) the polystyrene reclaimed materials through desolventing technology is added in batch mixer, be heated under logical condition of nitrogen gas
150～200 DEG C, and add benzoyl peroxide butyl ester and benzoyl peroxide, after mix homogeneously insulated and stirred 2～5h
Stop stirring and be cooled to 50～80 DEG C；
(2) system in step (1) adds polystyrene virgin material, high density polyethylene (HDPE), Masterbatch and poly-second
Alkene grafted maleic zinc, is again heated to 180～250 DEG C under logical condition of nitrogen gas, by mix homogeneously insulated and stirred
0.5～1.5h, add deca-BDE, antimony oxide, Styrene And Chloroalkyl Acrylates sodium and polydimethylsiloxane and continue stirring
0.5～1.5h；After being lowered the temperature by system temperature, pelletize processes；
(3) pellet step (2) obtained is sent in the feeding chamber of extruding machine, and injects foaming agent, is extruded into
Type；
(4) extruded sheet exported by extruding machine is transmitted through several jockey pulleys, and lower the temperature in transmitting procedure, cooling
Speed remains 2～5 DEG C/S, is dried and trimming processes.
Preparation method the most according to claim 4, it is characterised in that: described extruding machine is divided into a twin screw to squeeze
Go out machine and No. two single screw extrusion machines；A described double screw extruder is divided into 12 working regions, by charging aperture
The temperature of each working region be set as successively 180～185 DEG C, 185～195 DEG C, 185～195 DEG C, 190～200 DEG C,
225～235 DEG C, 195～205 DEG C, 195～205 DEG C, 195～205 DEG C, 225～235 DEG C, 225～235 DEG C, 195～205 DEG C,
195～205 DEG C；Described No. two single screw extrusion machines are divided into 9 each working regions, by feed end the first seven and the 9th
The temperature of working region is set as 175～185 DEG C, and the temperature of the 8th working region is set as 195～205 DEG C.
Preparation method the most according to claim 5, it is characterised in that: the screw rod of a described double screw extruder
Rotating speed is 150～220rpm, and the screw speed of No. two single screw extrusion machines is 8～15rpm, No. two single screw extrusion machines
Material mouth pressure is 8～20MPa.
Preparation method the most according to claim 5, it is characterised in that: in step (3), foaming agent is in described No. one
6th working region of double screw extruder is injected.
Preparation method the most according to claim 4, it is characterised in that: extrusion moulding process described in step (3)
It is 60～100 DEG C that middle top board temperature controls, and it is 60～100 DEG C that lower platen temperature controls.
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| CN201610287119.0A CN105906962A (en) | 2016-04-29 | 2016-04-29 | Polystyrene/high-density polyethylene blended high-strength extruded sheet and production method |
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| CN201610287119.0A CN105906962A (en) | 2016-04-29 | 2016-04-29 | Polystyrene/high-density polyethylene blended high-strength extruded sheet and production method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109083732A (en) * | 2018-08-08 | 2018-12-25 | 安徽志诚机电零部件有限公司 | A kind of novel antiultraviolet expansion tank formula and production method |
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