CN114714556A - Preparation method for producing open-cell polyethylene foam material - Google Patents
Preparation method for producing open-cell polyethylene foam material Download PDFInfo
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- CN114714556A CN114714556A CN202210347906.5A CN202210347906A CN114714556A CN 114714556 A CN114714556 A CN 114714556A CN 202210347906 A CN202210347906 A CN 202210347906A CN 114714556 A CN114714556 A CN 114714556A
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- -1 polyethylene Polymers 0.000 title claims abstract description 30
- 239000004698 Polyethylene Substances 0.000 title claims abstract description 29
- 239000006261 foam material Substances 0.000 title claims abstract description 29
- 229920000573 polyethylene Polymers 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 30
- 238000001125 extrusion Methods 0.000 claims abstract description 26
- 239000004594 Masterbatch (MB) Substances 0.000 claims abstract description 21
- 238000005187 foaming Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 17
- 238000005096 rolling process Methods 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 16
- 238000005469 granulation Methods 0.000 claims abstract description 9
- 230000003179 granulation Effects 0.000 claims abstract description 9
- 238000004519 manufacturing process Methods 0.000 claims abstract description 8
- 238000002156 mixing Methods 0.000 claims abstract description 4
- 238000001035 drying Methods 0.000 claims description 9
- 238000002844 melting Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 239000003963 antioxidant agent Substances 0.000 claims description 3
- 230000003078 antioxidant effect Effects 0.000 claims description 3
- 239000000498 cooling water Substances 0.000 claims description 3
- 239000004088 foaming agent Substances 0.000 claims description 3
- 230000000704 physical effect Effects 0.000 claims description 3
- 238000007599 discharging Methods 0.000 claims description 2
- 230000036760 body temperature Effects 0.000 claims 1
- 238000005520 cutting process Methods 0.000 claims 1
- 238000004132 cross linking Methods 0.000 abstract description 7
- 239000006260 foam Substances 0.000 abstract description 4
- 230000005855 radiation Effects 0.000 description 3
- 229920002943 EPDM rubber Polymers 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 150000001993 dienes Chemical class 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 229920001897 terpolymer Polymers 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
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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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/20—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of indefinite length
- B29C44/206—Using expandable particles or beads as starting material
-
- 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
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/56—After-treatment of articles, e.g. for altering the shape
- B29C44/5627—After-treatment of articles, e.g. for altering the shape by mechanical deformation, e.g. crushing, embossing, stretching
-
- 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
-
- 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
- C08J2205/00—Foams characterised by their properties
- C08J2205/04—Foams characterised by their properties characterised by the foam pores
- C08J2205/05—Open cells, i.e. more than 50% of the pores are open
-
- 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
- C08J2323/04—Homopolymers or copolymers of ethene
- C08J2323/06—Polyethene
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a preparation method for producing an open-cell polyethylene foam material, which comprises the following preparation steps: s1, master batch granulation: placing the raw materials into an internal mixer according to the formula requirements, and setting corresponding internal mixing extrusion processes according to different master batches to realize master batch granulation; s2, single-screw extrusion; s3, electron irradiation: determining corresponding irradiation dose according to production specification, and extruding out electronic irradiation of the master slice; s4, horizontal foaming: determining a corresponding foaming process for the irradiation master slice according to different specifications, and horizontally foaming the irradiation master slice; s5, mechanically rolling: and (4) determining the rolling times according to the opening requirements, and rolling the foamed coiled material by using double rollers to produce the open-cell polyethylene foamed materials with different specifications. The invention reduces the integral crosslinking degree of polyethylene by adding auxiliary materials, reduces the foam wall strength of the foam material, improves the mechanical rolling and crushing rate of the foam material, and realizes the production of the open-cell polyethylene foam material.
Description
Technical Field
The invention relates to the technical field of manufacturing processes of polyethylene foam materials, in particular to a preparation method for producing an open-cell polyethylene foam material.
Background
The high molecular foaming material is an aggregate formed by dispersing gas in a solid polymer, has the advantages of small density, good mechanical property, friction resistance, easy processing and forming and the like, and is widely applied to the aspects of sound absorption and noise reduction.
The existing open-cell foam materials mainly comprise polyether sponge and EPDM open-cell materials, the terpolymer of ethylene, propylene and non-conjugated diene is adopted, in the foaming process, the integral crosslinking degree of a high polymer is high, so that the strength of a foam wall of the foam material is high, the void ratio is low finally when mechanical rolling is carried out, and the produced product has limited absorption effect on sound waves due to insufficient open-cell ratio. Accordingly, the present document proposes a preparation method for producing an open-cell polyethylene foam material.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a preparation method for producing an open-cell polyethylene foam material.
In order to achieve the purpose, the invention adopts the following technical scheme:
a preparation method for producing an open-cell polyethylene foam material comprises the following preparation steps:
s1, master batch granulation: putting the raw materials into an internal mixer according to the formula requirements, and setting corresponding internal mixing extrusion processes according to different master batches to realize granulation of the master batches;
s2, single-screw extrusion: drying the granulated master batch, feeding the dried granulated master batch into a single-screw extruder, setting an extrusion process according to the physical properties of the raw materials, and realizing normal extrusion of the master slice of the open-cell polyethylene foam material while ensuring full melting of the raw materials;
s3, electron irradiation: determining corresponding irradiation dose according to production specification, and extruding out electronic irradiation of the master slice;
s4, horizontal foaming: determining a corresponding foaming process for the irradiation master slice according to different specifications, and horizontally foaming the irradiation master slice;
s5, mechanically rolling: and (4) determining the rolling times according to the opening requirements, and rolling the foamed coiled material by using double rollers to produce the open-cell polyethylene foamed materials with different specifications.
Preferably, the masterbatch in the step S1 includes the following components in parts by weight: 62.6 parts of polyethylene, 20 parts of auxiliary materials, 17 parts of foaming agent and 0.4 part of antioxidant.
Preferably, in step S2, before the masterbatch enters the single-screw extruder, a drying process is performed, and the drying temperature and time are set according to the drying raw material to ensure that the raw material is dry and moisture-free.
Preferably, in step S1, the setting of the extrusion process of the internal mixer includes setting of a feeding rotation speed, setting of a discharge temperature, setting of an extrusion rotation speed, setting of a dicing rotation speed, and setting of a temperature of the internal mixer extruder.
Preferably, in step S2, the extrusion process setting of the single-screw extruder includes setting of the temperature of the extruder body, setting of the screw rotation speed, and setting of the size of the screw cooling water.
The invention has the following beneficial effects:
the overall crosslinking degree of the polyethylene is reduced by adding the auxiliary materials, the foam wall strength of the foam material is reduced, the mechanical rolling and crushing rate of the foam material is improved, and the production of the open-cell polyethylene foam material is realized.
Drawings
Fig. 1 is a process flow chart of a preparation method for producing an open-cell polyethylene foam material according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1, a preparation method for producing an open-cell polyethylene foam material comprises the following preparation steps:
s1, master batch granulation: putting the raw materials into an internal mixer according to the formula requirements, and setting corresponding internal mixing extrusion processes according to different master batches to realize master batch granulation;
the master batch in the step S1 comprises the following components in parts by weight: 62.6 parts of polyethylene, 20 parts of auxiliary materials, 17 parts of foaming agent and 0.4 part of antioxidant. In step S1, the extrusion process setting of the internal mixer includes setting of feeding rotation speed, setting of discharging temperature, setting of extrusion rotation speed, setting of granulation rotation speed, and setting of temperature of the internal mixer. The specific banburying process parameters can be seen in the following table:
s2, single-screw extrusion: drying the granulated master batch, feeding the dried granulated master batch into a single-screw extruder, setting an extrusion process according to the physical properties of the raw materials, and realizing normal extrusion of the master slice of the open-cell polyethylene foam material while ensuring full melting of the raw materials;
in step S2, before the masterbatch enters the single-screw extruder, drying is performed, and the drying temperature and time are set according to the raw material to be dried, so as to ensure that the raw material is dry and free of moisture, specifically, a heating mixer is used to stir and dry the masterbatch at 100 ℃ for 90 minutes.
Further, the extrusion process setting of the single-screw extruder comprises setting of the temperature of the extruder body, setting of the rotating speed of the screw and setting of the size of the cooling water of the screw. In addition, in the single screw extrusion process, due to the low melting temperature of EPDM and the easy crosslinking, the extrusion process should be strictly controlled to ensure the normal production of the open-cell polyethylene mother plate. The specific process parameters in single screw extrusion can be seen in the following table:
s3, electron irradiation: determining corresponding irradiation dose according to production specification, and extruding out electronic irradiation of the master slice; specifically, the dose of the venetian irradiation was 2.0M, 2 layers, and 2 times.
S4, horizontal foaming: determining a corresponding foaming process for the irradiation master slice according to different specifications, and horizontally foaming the irradiation master slice; specifically, the irradiation mother board is horizontally foamed by a three-stage horizontal furnace with furnace temperature of 135-. The specific foaming process parameters can be seen in the following table:
s5, mechanically rolling: and (4) determining the rolling times according to the opening requirements, and rolling the foamed coiled material by using double rollers to produce the open-cell polyethylene foamed materials with different specifications. Specifically, the rolling times can be determined according to the requirements of customers so as to produce the foaming material with corresponding required specifications.
In addition, by changing the components, the proportion and the process parameters of the master batch, 30 times of 10mm radiation crosslinking open-cell polyethylene foam material (specification name: KA3010W), 30 times of 5mm radiation crosslinking open-cell polyethylene foam material (specification name: KA3005W) and 30 times of 7mm radiation crosslinking open-cell polyethylene foam material (specification name: KA3007B) can be prepared according to the preparation process steps, 100 parts of samples of various specifications are selected immediately, the open cell ratio and the acoustic wave ratio of the samples are measured, and the master batch components, the process parameters and the test results of the specifications are shown in the following table:
and it should be noted that, the temperature of the single screw extruder body is 105 ℃ when the three specifications of foaming materials are prepared. According to the test results, the preparation process of the foam material effectively reduces the foam wall strength of the foam material, greatly improves the mechanical rolling and crushing rate of the foam material, increases the aperture ratio of the foam material, and can effectively absorb sound waves.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (5)
1. The preparation method for producing the open-cell polyethylene foam material is characterized by comprising the following preparation steps of:
s1, master batch granulation: putting the raw materials into an internal mixer according to the formula requirements, and setting corresponding internal mixing extrusion processes according to different master batches to realize granulation of the master batches;
s2, single-screw extrusion: drying the granulated master batch, feeding the dried granulated master batch into a single-screw extruder, setting an extrusion process according to the physical properties of the raw materials, and realizing normal extrusion of the master slice of the open-cell polyethylene foam material while ensuring full melting of the raw materials;
s3, electron irradiation: determining corresponding irradiation dose according to production specification, and extruding out electronic irradiation of the master slice;
s4, horizontal foaming: determining a corresponding foaming process for the irradiation master slice according to different specifications, and horizontally foaming the irradiation master slice;
s5, mechanically rolling: and (4) determining the rolling times according to the opening requirements, and rolling the foamed coiled material by using double rollers to produce the open-cell polyethylene foamed materials with different specifications.
2. The method as claimed in claim 1, wherein the masterbatch of step S1 comprises the following components in parts by weight: 62.6 parts of polyethylene, 20 parts of auxiliary materials, 17 parts of foaming agent and 0.4 part of antioxidant.
3. The method of claim 1, wherein in step S2, the masterbatch is dried before entering the single-screw extruder, and the drying temperature and time are set according to the raw material to be dried, so as to ensure the raw material to be dried without moisture.
4. The method as claimed in claim 1, wherein the extrusion process settings of the internal mixer in step S1 include feeding speed setting, discharging temperature setting, extrusion speed setting, cutting speed setting and internal mixer-extruder temperature setting.
5. The method as claimed in claim 1, wherein the extrusion process settings of the single screw extruder in step S2 include extruder body temperature setting, screw rotation speed setting and screw cooling water size setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210347906.5A CN114714556A (en) | 2022-04-01 | 2022-04-01 | Preparation method for producing open-cell polyethylene foam material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210347906.5A CN114714556A (en) | 2022-04-01 | 2022-04-01 | Preparation method for producing open-cell polyethylene foam material |
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| CN202210347906.5A Pending CN114714556A (en) | 2022-04-01 | 2022-04-01 | Preparation method for producing open-cell polyethylene foam material |
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Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002154165A (en) * | 2000-11-17 | 2002-05-28 | Sanwa Kako Co Ltd | Method for manufacturing crosslinked polyethylene open-cell body |
| US20080003421A1 (en) * | 2004-10-18 | 2008-01-03 | Michio Matsumura | Method for Producing Polyolefin-Based Resin Crosslinked Foamed Sheet and Polyolefin-Based Resin Crosslinked Foamed Sheet |
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| CN105218851A (en) * | 2015-09-08 | 2016-01-06 | 宁波大学 | A kind of method preparing polymkeric substance hole-opening foaming material |
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| CN111574766A (en) * | 2020-05-29 | 2020-08-25 | 深圳市长园特发科技有限公司 | Radiation cross-linked polyethylene foam with high heat dissipation performance and preparation method and application thereof |
| CN111592706A (en) * | 2020-05-29 | 2020-08-28 | 深圳市长园特发科技有限公司 | Radiation crosslinking polyethylene foam and preparation method and application thereof |
| CN113444312A (en) * | 2021-06-07 | 2021-09-28 | 深圳市长园特发科技有限公司 | Polyolefin foam material and preparation method thereof |
| CN113527790A (en) * | 2021-07-19 | 2021-10-22 | 中广核高新核材科技（苏州）有限公司 | Anti-static irradiation crosslinked polyethylene foam material and preparation method thereof |
-
2022
- 2022-04-01 CN CN202210347906.5A patent/CN114714556A/en active Pending
Patent Citations (14)
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| JP2002154165A (en) * | 2000-11-17 | 2002-05-28 | Sanwa Kako Co Ltd | Method for manufacturing crosslinked polyethylene open-cell body |
| US20080003421A1 (en) * | 2004-10-18 | 2008-01-03 | Michio Matsumura | Method for Producing Polyolefin-Based Resin Crosslinked Foamed Sheet and Polyolefin-Based Resin Crosslinked Foamed Sheet |
| CN101665579A (en) * | 2008-09-03 | 2010-03-10 | 良澔科技企业股份有限公司 | Method for manufacturing opening foaming material and compositions thereof |
| CN105218851A (en) * | 2015-09-08 | 2016-01-06 | 宁波大学 | A kind of method preparing polymkeric substance hole-opening foaming material |
| CN107266765A (en) * | 2017-06-07 | 2017-10-20 | 深圳市长园特发科技有限公司 | A kind of inorganic foamed IXPE foams and preparation method thereof |
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| CN111574766A (en) * | 2020-05-29 | 2020-08-25 | 深圳市长园特发科技有限公司 | Radiation cross-linked polyethylene foam with high heat dissipation performance and preparation method and application thereof |
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