CN109624284B - Large-scale production of SiO by film blowing machine2Method for radiating cooling film - Google Patents
Large-scale production of SiO by film blowing machine2Method for radiating cooling film Download PDFInfo
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- CN109624284B CN109624284B CN201910050583.1A CN201910050583A CN109624284B CN 109624284 B CN109624284 B CN 109624284B CN 201910050583 A CN201910050583 A CN 201910050583A CN 109624284 B CN109624284 B CN 109624284B
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- film
- density polyethylene
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- powder
- sio
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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
- B29C55/00—Shaping by stretching, e.g. drawing through a die; Apparatus therefor
- B29C55/28—Shaping by stretching, e.g. drawing through a die; Apparatus therefor of blown tubular films, e.g. by inflation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Shaping By String And By Release Of Stress In Plastics And The Like (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a large-scale production method of SiO by using a film blowing machine2Method of radiation cooling of the film: mixing low density polyethylene particlesPolyethylene powder, SiO2Fully mixing and stirring the powder outside a film blowing machine; opening a film blowing machine, adjusting the heating temperature to 220 ℃, and adjusting the film thickness to 50 microns; adding the mixture stirred in the first step into a lower hopper of a film blowing machine, feeding the mixture into a screw from the hopper by the weight of particles, and gradually heating; SiO-carried fused low-density polyethylene particles and low-density polyethylene powder2The powder is removed with impurities by a filter screen of a machine head of a film blowing machine and comes out from a die head die orifice, and after being blown and cooled, the powder is pressed by a herringbone plate and is rolled by a traction roller to roll the finished film into a tube. The invention can be SiO2The use of a radiation cooled film provides a low cost, scalable production process.
Description
Technical Field
The invention relates to the field of cooling, in particular to a method for producing SiO in a large scale by utilizing a film blowing machine2A method of radiation cooling a film.
Background
At present, there are various methods for film preparation, and passive radiation cooling is in research phase and will soon reach large-scale application phase. The radiation cooling has various forms, can be produced on a large scale and has lower cost2The preparation of the radiation cooling film is still in a laboratory stage, and further research and exploration are needed when the radiation cooling film is applied to large-scale production.
Disclosure of Invention
The invention aims to solve the problem of SiO-based2The problem of large-scale production of the composite cooling film, and provides a method for producing SiO on a large scale by using a film blowing machine2Method of radiation cooling film, can be SiO2The use of a radiation cooled film provides a low cost, scalable production process.
The purpose of the invention is realized by the following technical scheme.
The invention utilizes the film blowing machine to produce SiO in large scale2A method of radiation cooling a film comprising the steps of:
the first step is as follows: mixing low density polyethylene particles, low density polyethylene powder and SiO2Powder is prepared from the following components in percentage by mass of 70: 30: 6, fully mixing and stirring outside a film blowing machine;
the second step is that: opening a film blowing machine, adjusting the heating temperature to 220 ℃, and adjusting the film thickness to 50 microns;
the third step: adding the mixture stirred in the first step into a lower hopper of a film blowing machine, feeding the mixture into a screw from the hopper by the weight of particles, and gradually heating;
the fourth step: SiO-carried fused low-density polyethylene particles and low-density polyethylene powder2Removing impurities from the powder by a filter screen of a head of a film blowing machine, discharging from a die head die orifice, blowing, cooling, and then performingPressing with a herringbone plate, and coiling by a traction roller to roll the finished film into a tube.
The low-density polyethylene particles and the low-density polyethylene powder both adopt common low-density polyethylene and are used for light transmission of a cooling film emission layer, the melting point is 107-112 ℃, the melt flow rate is 3.0-5.0g/10min, the particle size of the low-density polyethylene particles is 4-5mm, and the particle size of the low-density polyethylene powder is 100 meshes.
The SiO2The powder is used for emitting infrared rays, and is nanoscale round spherical powder with the particle size of 8 microns.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
(1) low-density polyethylene particles, low-density polyethylene powder and SiO in the invention2The mass ratio of the powder is 70: 30: 6 fully mixing and stirring outside the film blowing machine, and solving the problem of SiO caused by the particle size of low-density polyethylene by the proportion of the particle size of the low-density polyethylene2Uneven distribution and continuous film formation.
(2) The low-density polyethylene particles and the low-density polyethylene powder both adopt common low-density polyethylene and are used for ensuring the high permeability of the film, the low-density polyethylene particles are used for the normal production of a film blowing machine, and the low-density polyethylene powder is used for SiO2Powder entrainment, SiO2The powder is used to emit infrared light.
(3) The invention can be produced in large scale by adopting a common film blowing machine and is used for preparing low-density polyethylene materials and nano SiO2The powder is fused together and blown into a film, thus solving the problem that the laboratory process cannot realize large-scale production.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in further detail below.
The invention utilizes the film blowing machine to produce SiO in large scale2A method of radiation cooling a film comprising the steps of:
the first step is as follows: mixing low density polyethylene particles, low density polyethylene powder and SiO2The powder is fully stirred and mixed evenly outside the film blowing machine to prevent SiO2The powder has small particle size and large density and sinks to the bottom, and the proportion is not balanced when the powder is added into a blanking hopper of a film blowing machine.
Wherein, the low density polyethylene particles, the low density polyethylene powder and the SiO2The mass ratio of the powder is 60: 40: 6, mixing to produce the radiation cooling film. The low-density polyethylene particles and the low-density polyethylene powder are used for the light transmission of the emission layer of the cooling film and bear SiO2And the low-density polyethylene particles and the low-density polyethylene powder are both made of common low-density polyethylene and are used for ensuring the high permeability of the film, the melting point is 107-112 ℃, and the melt flow rate is 3.0-5.0g/10 min. The particle size of the low-density polyethylene particles is 4-5mm, and the low-density polyethylene particles are used for normal production of a film blowing machine. The low density polyethylene powder has a particle size of about 100 mesh and is used in SiO2Powder entrainment. The SiO2The powder is used for emitting infrared rays, and micron-sized round spherical powder with the particle size of about 8 microns is adopted.
The second step is that: the film blowing machine is opened, the heating temperature is adjusted to about 220 ℃, and the film thickness is adjusted to 50 microns. Wherein the film blowing machine is used for mixing low-density polyethylene particles, low-density polyethylene powder and nano SiO2The powders were fused together and blown into a film.
The third step: and (3) adding the mixture which is uniformly stirred and mixed in the first step into a lower hopper of a film blowing machine, entering a screw from the hopper by the weight of the particles, and gradually heating.
The fourth step: SiO-carried fused low-density polyethylene particles and low-density polyethylene powder2The powder is removed with impurities by a filter screen of a machine head of a film blowing machine and comes out from a die head die orifice, and after being blown and cooled, the powder is pressed by a herringbone plate and is rolled by a traction roller to roll the finished film into a tube.
Although the invention has been described above with reference to features and materials, the invention is not limited to the specific features and materials set forth above, the above-described embodiments are intended to be illustrative, rather than limiting, and it will be apparent to those of ordinary skill in the art in light of the teachings of the invention that many more modifications can be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (2)
1. Large-scale production of SiO by using film blowing machine2A method of radiation cooling a film, comprising the steps of:
the first step is as follows: mixing low density polyethylene particles, low density polyethylene powder and SiO2Powder is prepared from the following components in percentage by mass of 70: 30: 6, fully mixing and stirring outside a film blowing machine;
the second step is that: opening a film blowing machine, adjusting the heating temperature to 220 ℃, and adjusting the film thickness to 50 microns;
the third step: adding the mixture stirred in the first step into a lower hopper of a film blowing machine, feeding the mixture into a screw from the hopper by the weight of particles, and gradually heating;
the fourth step: SiO-carried fused low-density polyethylene particles and low-density polyethylene powder2The powder is removed with impurities by a filter screen of a machine head of a film blowing machine and comes out from a die head die orifice, and after being blown and cooled, the powder is pressed by a herringbone plate and is rolled by a traction roller to roll the finished film into a tube.
2. The mass production of SiO using film blowing machine as claimed in claim 12The method for radiating the cooling film is characterized in that common low-density polyethylene is adopted as the low-density polyethylene particles and the low-density polyethylene powder, the common low-density polyethylene is used for light transmission of the emitting layer of the cooling film, the melting point is 107-112 ℃, the melt flow rate is 3.0-5.0g/10min, the particle size of the low-density polyethylene particles is 4-5mm, and the particle size of the low-density polyethylene powder is 100 meshes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910050583.1A CN109624284B (en) | 2019-01-19 | 2019-01-19 | Large-scale production of SiO by film blowing machine2Method for radiating cooling film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910050583.1A CN109624284B (en) | 2019-01-19 | 2019-01-19 | Large-scale production of SiO by film blowing machine2Method for radiating cooling film |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109624284A CN109624284A (en) | 2019-04-16 |
| CN109624284B true CN109624284B (en) | 2021-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910050583.1A Expired - Fee Related CN109624284B (en) | 2019-01-19 | 2019-01-19 | Large-scale production of SiO by film blowing machine2Method for radiating cooling film |
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| JPWO2020262247A1 (en) * | 2019-06-27 | 2020-12-30 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008030461A (en) * | 2006-06-27 | 2008-02-14 | Sumitomo Chemical Co Ltd | Manufacturing process of polyolefin resin film |
| CN101228232A (en) * | 2005-07-28 | 2008-07-23 | 株式会社吴羽 | Polyvinylidene chloride resin composition, biaxially stretched film, and method for producing such biaxially stretched film |
| CN103042796A (en) * | 2013-01-07 | 2013-04-17 | 惠州宝柏包装有限公司 | Antistatic polyethylene film and preparation method thereof |
| WO2017151514A1 (en) * | 2016-02-29 | 2017-09-08 | The Regents Of The University Of Colorado, A Body Corporate | Radiative cooling structures and systems |
-
2019
- 2019-01-19 CN CN201910050583.1A patent/CN109624284B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101228232A (en) * | 2005-07-28 | 2008-07-23 | 株式会社吴羽 | Polyvinylidene chloride resin composition, biaxially stretched film, and method for producing such biaxially stretched film |
| JP2008030461A (en) * | 2006-06-27 | 2008-02-14 | Sumitomo Chemical Co Ltd | Manufacturing process of polyolefin resin film |
| CN103042796A (en) * | 2013-01-07 | 2013-04-17 | 惠州宝柏包装有限公司 | Antistatic polyethylene film and preparation method thereof |
| WO2017151514A1 (en) * | 2016-02-29 | 2017-09-08 | The Regents Of The University Of Colorado, A Body Corporate | Radiative cooling structures and systems |
| CN109070695A (en) * | 2016-02-29 | 2018-12-21 | 科罗拉多大学董事会 | Radiation-cooled structure and system |
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| CN109624284A (en) | 2019-04-16 |
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