CN105419093A - Foam material with double-peak cellular structure and preparation method of foam material - Google Patents
Foam material with double-peak cellular structure and preparation method of foam material Download PDFInfo
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- CN105419093A CN105419093A CN201510940039.6A CN201510940039A CN105419093A CN 105419093 A CN105419093 A CN 105419093A CN 201510940039 A CN201510940039 A CN 201510940039A CN 105419093 A CN105419093 A CN 105419093A
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/122—Hydrogen, oxygen, CO2, nitrogen or noble gases
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
- C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
- C08J2323/10—Homopolymers or copolymers of propene
- C08J2323/12—Polypropene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/14—Applications used for foams
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
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- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a preparation method of a foam material with a double-peak cellular structure. The method comprises steps as follows: (a) 50-90 parts by weight of a polymer A, 10-50 parts by weight of a polymer B and 0.1-3 parts by weight of monoglyceride are weighed, wherein the polymer A adopts polypropylene, and the polymer B adopts at least one of polyethylene, polystyrene and polyolefin elastomers; (b), the polymer A, the polymer B and the monoglyceride are mixed, a mixture is obtained and then added to a first extruder, and a pre-mixed material is obtained through melting extrusion; (c) the pre-mixed material is added to a second extruder, carbon dioxide at the supercritical state is introduced in the 1/5-1/3 position of a screw of the second extruder, and the foam material with the double-peak cellular structure is obtained through extrusion foaming. The invention further provides the foam material with the double-peak cellular structure.
Description
Technical field
The present invention relates to technical field of polymer materials, particularly relate to a kind of foam materials containing bimodal cell structure and preparation method thereof.
Background technology
Foam materials containing bimodal cell structure refers to the foam materials having bulla and vesicle concurrently, wherein, the mean pore size of bulla is between 0.05mm ~ 1.2mm, and the aperture of vesicle is 5% ~ 50% of bulla aperture, and bulla and vesicle will occupy the volume of whole foam materials more than 90%.Due to the foam structure of this uniqueness, it has lower density and excellent thermal insulation properties.
At present, preparation has two step batch-foamed methods and two whipping agent extrusion foaming process containing the main method of the foam materials of bimodal cell structure.Such as publication number be CN103240884B application discloses a kind of preparation method with the polycarbonate poromerics of bimodal distribution, it adopts two step release foamings to prepare the foam materials having large vesicle concurrently.But the preparation efficiency of the method is comparatively low, and the expansion multiplying power of products obtained therefrom is lower.US Patent No. 4455272 discloses a kind of preparation method of the polystyrene foam containing bimodal cell structure, and it is using water and hydrocarbon polymer as co-foaming agent, adopts extrusion foaming process to prepare foam materials containing bimodal cell structure.But this method needs two cover gas injection equipment, and cost is higher, complicated operation, and the hydrocarbon polymer adopted is inflammable and explosive, there is potential safety hazard.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of production efficiency higher, foam materials containing bimodal cell structure that operating process is simple, safe and preparation method thereof, to solve technical problem in prior art.
The invention provides a kind of preparation method of the foam materials containing bimodal cell structure, it comprises the steps:
A () takes polymer A 50 ~ 90 weight part, polymer B 10 ~ 50 weight part, mono-glycerides 0.1 ~ 3 weight part, and wherein said polymer A is polypropylene, and described polymer B is at least one in polyethylene, polystyrene, polyolefin elastomer;
B described polymer A, polymer B and mono-glycerides are put into high-speed mixer and are mixed to get a mixture by (), then added in the first forcing machine by this mixture, melt extrude and obtain pre-composition;
C described pre-composition adds in the second forcing machine by (), and pass into the carbonic acid gas of above-critical state at 1/5 ~ 1/3 place of the screw rod of the second forcing machine, and extrusion foaming obtains the foam materials containing bimodal cell structure.
Preferably, described in step (a), polyacrylic melting index is 0.1g/10min ~ 50g/10min.
Preferably, the quality of the carbonic acid gas of above-critical state described in step (c) accounts for 1% ~ 20% of the total mass of described mixture.
Preferably, the carbonic acid gas of above-critical state is passed in step (c) at 1/4 place of the screw rod of the second forcing machine.
Preferably, the temperature in the first half district of the screw rod of the second forcing machine described in step (c) is 180 DEG C ~ 220 DEG C, and the temperature in the later half district of screw rod is 145 DEG C ~ 180 DEG C.
Preferably, the injection pressure of the carbonic acid gas of above-critical state described in step (c) is 7MPa ~ 30MPa.
Preferably, the pressure in the second forcing machine described in step (c) is 7MPa ~ 25MPa.
The present invention also provides a kind of foam materials containing bimodal cell structure adopting above-mentioned preparation method to obtain, the described foam materials containing bimodal cell structure comprises multiple bulla and multiple vesicle, the mean pore size of described bulla is 200 μm ~ 500 μm, and the mean pore size of described vesicle is 30 μm ~ 100 μm.
Compared to prior art, present method adopts the carbonic acid gas of the above-critical state of environmental protection as whipping agent, by process regulation, carries out continuous extrusion foaming to blend polymer, obtains the foam materials containing bimodal cell structure.Concrete, in extrusion and foaming process, because polymer A and polymer B are to the different solubility of the carbonic acid gas of above-critical state, so the nucleation capability of two kinds of polymkeric substance has larger difference; Wherein, polymer A is comparatively large to the solubleness of the carbonic acid gas of above-critical state, and therefore the nucleation capability of polymer A is comparatively strong, and cell density is higher, and abscess-size is less; And the solubleness of polymer B to the carbonic acid gas of above-critical state is less, the nucleation capability of polymer B is more weak, and cell density is less, and abscess-size is larger; So the difference of the abscess-size formed in two kinds of polymkeric substance makes the foam structure of blend foam material be bimodal distribution.
Simultaneously, when melt extrusion mouth place's pressure release of the second forcing machine, because pressure in polymer A of the carbonic acid gas of above-critical state is higher than the pressure in polymer B, carbonic acid gas can be spread to polymer B by polymer A, the bulla formed in polymer B is caused to become larger like this, and the vesicle formed in polymer A becomes less, thus increase the trend that foam structure is bimodal distribution.The method production efficiency is higher, and operating process is simple, safety, and gained shows good characteristic containing the foam materials of bimodal cell structure in thermal insulation properties etc.
Accompanying drawing explanation
Fig. 1 is the stereoscan photograph of the foam materials containing bimodal cell structure prepared by the embodiment of the present invention 1.
Fig. 2 is the stereoscan photograph of the foam materials containing unimodal cell structure prepared by comparative example 1.
Embodiment
Be clearly and completely described to the technical scheme in embodiment of the present invention below, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention provides a kind of preparation method of the foam materials containing bimodal cell structure, it comprises the steps:
A takes polymer A 50 ~ 90 weight part, polymer B 10 ~ 50 weight part, mono-glycerides 0.1 ~ 3 weight part, and wherein said polymer A is polypropylene, and described polymer B is at least one in polyethylene, polystyrene, polyolefin elastomer;
Described polymer A, polymer B and mono-glycerides are mixed to get a mixture by b, are then added in the first forcing machine by this mixture, melt extrude and obtain pre-composition;
Described pre-composition adds in the second forcing machine by c, and passes into the carbonic acid gas of above-critical state at 1/5 ~ 1/3 place of the screw rod of the second forcing machine, and extrusion foaming obtains the foam materials containing bimodal cell structure.
In step (a), can according to the carbonic acid gas of above-critical state solubleness in different polymkeric substance, and select the kind of this polymer A and polymer B, as long as ensure under the carbon dioxide content of certain above-critical state, the difference in solubility of carbonic acid gas in this polymer A and polymer B more greatly.The polyacrylic melting index of described polymer A is 0.1g/10min ~ 50g/10min (now test condition is 2.16kg/190 DEG C).Described mono-glycerides act as suppression cell contraction.
Preferably, polymer A 60 ~ 90 weight part, polymer B 10 ~ 40 weight part, mono-glycerides 0.5 ~ 2 weight part, each component of this preferred weight part can realize the bulla that obtains and vesicle is evenly distributed and ratio is suitable.
In step (b), first by high-speed mixer, described polymer A, polymer B and mono-glycerides can be mixed to get described mixture, and then it is more even by the first forcing machine, the polymer A in described mixture and polymer B to be mixed to make it mix under molten state.Described mixture adds in the first forcing machine from the opening for feed of the first forcing machine.Described first forcing machine specifically can be twin screw extruder.The temperature of described first forcing machine is 180 DEG C ~ 220 DEG C.
In step (c), by process regulation (changing the carbon dioxide content etc. of temperature, pressure, above-critical state), guarantee the different solubility of the carbonic acid gas of above-critical state in two kinds of polymkeric substance, make the nucleation capability of polymer A and polymer B variant, and obtain the different bulla of multiple size and vesicle, thus prepare the foam materials containing bimodal cell structure.This bulla and vesicle are unicellular structure.
The quality of the carbonic acid gas of described above-critical state accounts for 1% ~ 20% of the total mass of described mixture.The injection pressure of the carbonic acid gas of described above-critical state is 7MPa ~ 30MPa.Described second forcing machine is the extrusion foaming forcing machine independently built.The temperature in the first half district of the screw rod of described second forcing machine is 180 DEG C ~ 220 DEG C, and the temperature in the later half district of screw rod is 145 DEG C ~ 180 DEG C.Pressure in described second forcing machine is 7MPa ~ 25MPa.
In order to ensure that carbon dioxide and polymkeric substance have good mixed effect, and in the foam materials obtained, have blebbing effect and the ratio of better bulla and vesicle, preferably, the carbonic acid gas of above-critical state is passed at 1/4 place of the screw rod of the second forcing machine, the quality of the carbonic acid gas of described above-critical state accounts for 5% ~ 15% of the total mass of described mixture, the injection pressure of the carbonic acid gas of described above-critical state is 10MPa ~ 20Mpa, the temperature in the first half district of the screw rod of described second forcing machine is 190 DEG C ~ 210 DEG C, the temperature in the later half district of screw rod is 150 DEG C ~ 170 DEG C, pressure in described second forcing machine is 8MPa ~ 18MPa.
The present invention also provides a kind of foam materials containing bimodal cell structure adopting above-mentioned preparation method to obtain.The described foam materials containing bimodal cell structure comprises multiple bulla and multiple vesicle.The mean pore size of described bulla is 200 μm ~ 500 μm, and the mean pore size of vesicle is 30 μm ~ 100 μm.This bulla and vesicle are unicellular structure.Be appreciated that this contains bulla in the foam materials of bimodal cell structure and the vesicle overwhelming majority is unicellular structure, but the part not getting rid of only a few is the situation of perforate.Because this bulla and vesicle are unicellular structure, therefore good thermal insulation properties should be had containing the foam materials of bimodal cell structure.It should be 5 times ~ 50 times containing the expansion multiplying power of the foam materials of bimodal cell structure.
Compared to prior art, present method adopts the carbonic acid gas of the above-critical state of environmental protection as whipping agent, by process regulation, carries out continuous extrusion foaming to blend polymer, obtains the foam materials containing bimodal cell structure.Concrete, in extrusion and foaming process, because polymer A and polymer B are to the different solubility of the carbonic acid gas of above-critical state, so the nucleation capability of two kinds of polymkeric substance has larger difference; Wherein, polymer A is comparatively large to the solubleness of the carbonic acid gas of above-critical state, and therefore the nucleation capability of polymer A is comparatively strong, and cell density is higher, and abscess-size is less; And the solubleness of polymer B to the carbonic acid gas of above-critical state is less, the nucleation capability of polymer B is more weak, and cell density is less, and abscess-size is larger; So the difference of the abscess-size formed in two kinds of polymkeric substance makes the foam structure of blend foam material be bimodal distribution.
Simultaneously, when melt extrusion mouth place's pressure release of the second forcing machine, because pressure in polymer A of the carbonic acid gas of above-critical state is higher than the pressure in polymer B, carbonic acid gas can be spread to polymer B by polymer A, the bulla formed in polymer B is caused to become larger like this, and the vesicle formed in polymer A becomes less, thus increase the trend that foam structure is bimodal distribution.The method production efficiency is higher, and operating process is simple, safety, and the foam materials containing bimodal cell structure of gained shows good characteristic in thermal insulation properties etc.
Below in conjunction with specific embodiment, the preparation method to the foam materials containing bimodal cell structure of the present invention is described:
Embodiment 1:
Take about 80 parts by weight of polypropylene, 20 weight part polystyrene and 0.5 weight part mono-glycerides.
Above-mentioned each raw material is added in the first forcing machine after high-speed mixer is mixed, melt extrudes and obtain pre-composition.
Pre-composition is added in the second forcing machine; Wherein, the first half district temperature of screw rod is set to 190 DEG C, and the later half district temperature of screw rod is set to 160 DEG C; Inject the carbonic acid gas of about 7 weight part above-critical states at 1/4 place of screw rod, injection pressure is set to 15MPa; Pressure in second forcing machine maintains 9MPa, and extrusion foaming obtains foam materials.
Embodiment 2:
Take about 70 parts by weight of polypropylene, 30 weight part polystyrene and 1 weight part mono-glycerides.
Above-mentioned each raw material is added in the first forcing machine after high-speed mixer is mixed, melt extrudes and obtain pre-composition.
Pre-composition is added in the second forcing machine; Wherein, the first half district temperature of screw rod is set to 200 DEG C, and the later half district temperature of screw rod is set to 165 DEG C; Inject the carbonic acid gas of about 5 weight part above-critical states at 1/4 place of screw rod, injection pressure is set to 18MPa; Pressure in second forcing machine maintains 10MPa, and extrusion foaming obtains foam materials.
Embodiment 3:
Take about 90 parts by weight of polypropylene, 10 weight account polyethylenes and 1.5 weight part mono-glyceridess.
Above-mentioned each raw material is added in the first forcing machine after high-speed mixer is mixed, melt extrudes and obtain pre-composition.
Pre-composition is added in the second forcing machine; Wherein, the first half district temperature of screw rod is set to 195 DEG C, and the later half district temperature of screw rod is set to 155 DEG C; Inject the carbonic acid gas of about 9 weight part above-critical states at 1/4 place of screw rod, injection pressure is set to 16MPa; Pressure in second forcing machine maintains 12MPa, and extrusion foaming obtains foam materials.
Embodiment 4:
Take about 60 parts by weight of polypropylene, 40 weight part polyolefin elastomers and 0.5 weight part mono-glycerides.
Above-mentioned each raw material is added in the first forcing machine after high-speed mixer is mixed, melt extrudes and obtain pre-composition.
Pre-composition is added in the second forcing machine; Wherein, the first half district temperature of screw rod is set to 210 DEG C, and the later half district temperature of screw rod is set to 160 DEG C; Inject the carbonic acid gas of about 7 weight part above-critical states at 1/4 place of screw rod, injection pressure is set to 20MPa; Pressure in second forcing machine maintains 8MPa, and extrusion foaming obtains foam materials.
Comparative example 1:
Take about 100 parts by weight of polypropylene and 1 weight part mono-glycerides.
Above-mentioned each raw material is added in the first forcing machine after high-speed mixer is mixed, melt extrudes and obtain pre-composition.
Pre-composition is added in the second forcing machine; Wherein, the first half district temperature of screw rod is set to 190 DEG C, and the later half district temperature of screw rod is set to 160 DEG C; Inject the carbonic acid gas of about 7 weight part above-critical states at 1/4 place of screw rod, injection pressure is set to 15MPa; Pressure in second forcing machine maintains 9MPa, and extrusion foaming obtains foam materials.
Comparative example 2:
Take about 80 parts by weight of polypropylene, 20 weight part polystyrene and 0.5 weight part mono-glycerides.
Above-mentioned each raw material is added in the first forcing machine after high-speed mixer is mixed, melt extrudes and obtain pre-composition.
Pre-composition is added in the second forcing machine; Wherein, the first half district temperature of screw rod is set to 200 DEG C, and the later half district temperature of screw rod is set to 165 DEG C; Inject the carbonic acid gas of about 3 weight part above-critical states at 1/4 place of screw rod, injection pressure is set to 15MPa; Pressure in second forcing machine maintains 18MPa, and extrusion foaming obtains foam materials.
Abscess-size, expansion multiplying power and thermal characteristics sign is carried out to the product that embodiment 1 to 4, comparative example 1 and 2 obtain, the results are shown in Table 1.Wherein, abscess-size characterizes: adopt TM-1000 scanning electronic microscope; Expansion multiplying power characterizes: adopt GH-300A foam density instrument; Thermal characteristics characterizes: adopt LFA-457 laser conductometer.
Table 1
From table 1, relative to comparative example 1 and 2, the abscess of the foam materials that embodiment 1 to 4 obtains is bimodal distribution, and thermal conductivity is lower.This illustrates that the foam materials containing bimodal cell structure that this preparation method obtains has lower density and excellent thermal insulation properties, is beneficial to commercial application.
From Fig. 1 and Fig. 2, in comparative example 1, abscess is unimodal distribution, and the abscess that the present embodiment 1 obtains foam materials is bimodal distribution, and wherein the size difference of macropore and aperture is larger.
The explanation of above embodiment just understands method of the present invention and core concept thereof for helping.It should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention, can also carry out some improvement and modification to the present invention, these improve and modify and also fall in the protection domain of the claims in the present invention.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (8)
1., containing a preparation method for the foam materials of bimodal cell structure, it comprises the steps:
A () takes polymer A 50 ~ 90 weight part, polymer B 10 ~ 50 weight part, mono-glycerides 0.1 ~ 3 weight part, and wherein said polymer A is polypropylene, and described polymer B is at least one in polyethylene, polystyrene, polyolefin elastomer;
B described polymer A, polymer B and mono-glycerides are mixed to get a mixture by (), then added in the first forcing machine by this mixture, melt extrude and obtain pre-composition;
C described pre-composition adds in the second forcing machine by (), and pass into the carbonic acid gas of above-critical state at 1/5 ~ 1/3 place of the screw rod of the second forcing machine, and extrusion foaming obtains the foam materials containing bimodal cell structure.
2. a preparation method for the foam materials containing bimodal cell structure as claimed in claim 1, it is characterized in that, described in step (a), polyacrylic melting index is 0.1g/10min ~ 50g/10min.
3. a preparation method for the foam materials containing bimodal cell structure as claimed in claim 1, it is characterized in that, the quality of the carbonic acid gas of above-critical state described in step (c) accounts for 1% ~ 20% of the total mass of described mixture.
4. a preparation method for the foam materials containing bimodal cell structure as claimed in claim 1, is characterized in that, pass into the carbonic acid gas of above-critical state in step (c) at 1/4 place of the screw rod of the second forcing machine.
5. one kind contains the preparation method of the foam materials of bimodal cell structure as claimed in claim 1, it is characterized in that, the temperature in the first half district of the screw rod of the second forcing machine described in step (c) is 180 DEG C ~ 220 DEG C, and the temperature in the later half district of screw rod is 145 DEG C ~ 180 DEG C.
6. a preparation method for the foam materials containing bimodal cell structure as claimed in claim 1, it is characterized in that, the injection pressure of the carbonic acid gas of above-critical state described in step (c) is 7MPa ~ 30MPa.
7. a preparation method for the foam materials containing bimodal cell structure as claimed in claim 1, it is characterized in that, the pressure in the second forcing machine described in step (c) is 7MPa ~ 25MPa.
8. one kind adopts the foam materials containing bimodal cell structure as any one of claim 1 to 7 preparation method obtains, it is characterized in that, the described foam materials containing bimodal cell structure comprises multiple bulla and multiple vesicle, the mean pore size of described bulla is 200 μm ~ 500 μm, and the mean pore size of described vesicle is 30 μm ~ 100 μm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110128741A (en) * | 2018-02-09 | 2019-08-16 | 中国科学院宁波材料技术与工程研究所 | Foam polyolefin material and preparation method thereof |
| CN113896936A (en) * | 2021-10-20 | 2022-01-07 | 浙江碳景科技有限公司 | Foaming light diffusion plate and preparation method and application thereof |
| CN116855183A (en) * | 2023-07-12 | 2023-10-10 | 湖北祥源高新科技有限公司 | Polyolefin-based cushioning foam sheet, adhesive tape, display module, and electronic product |
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| CN103937091A (en) * | 2014-03-12 | 2014-07-23 | 金发科技股份有限公司 | Flame retardation enhanced polypropylene composition and preparation method thereof |
| CN104974424A (en) * | 2015-07-01 | 2015-10-14 | 中国科学院宁波材料技术与工程研究所 | Open-hole polymer foamed material and preparation method thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110128741A (en) * | 2018-02-09 | 2019-08-16 | 中国科学院宁波材料技术与工程研究所 | Foam polyolefin material and preparation method thereof |
| CN113896936A (en) * | 2021-10-20 | 2022-01-07 | 浙江碳景科技有限公司 | Foaming light diffusion plate and preparation method and application thereof |
| CN113896936B (en) * | 2021-10-20 | 2023-08-15 | 浙江碳景科技有限公司 | Foaming light diffusion plate and preparation method and application thereof |
| CN116855183A (en) * | 2023-07-12 | 2023-10-10 | 湖北祥源高新科技有限公司 | Polyolefin-based cushioning foam sheet, adhesive tape, display module, and electronic product |
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| CN105419093B (en) | 2018-12-18 |
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