CN110872432A - Production method of TPU film - Google Patents
Production method of TPU film Download PDFInfo
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- CN110872432A CN110872432A CN201811000425.7A CN201811000425A CN110872432A CN 110872432 A CN110872432 A CN 110872432A CN 201811000425 A CN201811000425 A CN 201811000425A CN 110872432 A CN110872432 A CN 110872432A
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- tpu
- tpu film
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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
- C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
- C08J5/18—Manufacture of films or sheets
-
- 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
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
-
- 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
- C08J2429/00—Characterised by the use 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 alcohol, ether, aldehydo, ketonic, acetal, or ketal radical; Hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acids; Derivatives of such polymer
- C08J2429/02—Homopolymers or copolymers of unsaturated alcohols
- C08J2429/04—Polyvinyl alcohol; Partially hydrolysed homopolymers or copolymers of esters of unsaturated alcohols with saturated carboxylic acids
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a production method of a TPU film, which is characterized in that TPU particles, polyvinyl alcohol, a chain extender and a borate coupling agent are uniformly mixed, and the mixture is subjected to hot air drying, dehumidification drying and extrusion by a casting machine to form a film. The TPU film obtained by the production process has the advantages of uniform thickness, wear resistance, good elasticity and toughness and the like, and effectively solves the problems of the existing TPU film.
Description
Technical Field
The invention belongs to the technical field of TPU film production, and particularly relates to a production method of a TPU film.
Background
Thermoplastic Polyurethane (TPU) is a polymeric material that melts upon heating and is solvent soluble. The high-strength high-elasticity MDI is prepared by extruding and mixing MDI containing NCO functional groups, POLYOL containing OH functional groups and 1.4BG, and is widely applied to the fields of automobile industry, medical treatment and health care, articles for daily use and the like due to the characteristics of high strength, high elasticity, excellent wear resistance, oil resistance and low temperature resistance.
The TPU film is prepared by processes of calendering, tape casting, film blowing, coating and the like on the basis of TPU granules. The traditional production process of the TPU film is mainly casting, the production capacity of the process is low, the thickness of the film is uneven, and all functional modification auxiliary agents need to be granulated and then added for use, so that the production cost is extremely high, and the popularization and application of the TPU film are limited. The existing TPU material generally has the problems of low wear resistance, elasticity and toughness, and can not meet the application requirements of some specific technical fields.
Disclosure of Invention
In view of the above, the present invention provides a method for producing a TPU film, which can effectively solve the above-mentioned problems of the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: a method of producing a TPU film, comprising the steps of:
(1) according to the weight parts, 70-85 parts of TPU particles, 60-80 parts of polyvinyl alcohol, 5-15 parts of chain extender and 20-30 parts of borate coupling agent are uniformly mixed, put into a mixer and stirred and mixed for 15-20 minutes to obtain a uniformly mixed first-grade mixture;
(2) conveying the primary mixture to a hot air dryer through an automatic feeding system for drying for 1-2h, wherein the drying temperature is 90-105 ℃, and obtaining a secondary mixture;
(3) pumping the secondary mixture into a dehumidification dryer for drying for 3-4h, wherein the drying temperature is 100-;
(4) and (3) conveying the three-level mixture into a casting machine through an automatic feeding system, and extruding to form a film.
Further, the temperature of each section of the casting machine is set as follows: the charging barrel temperature is 140-.
Further, the chain extender comprises any one of ethylene glycol, 1, 3-propylene glycol, 1, 4-butanediol or 1, 5-pentanediol or a combination of at least two of the ethylene glycol, the 1, 3-propanediol, the 1, 4-butanediol or the 1, 5-pentanediol.
Further, the chain extender is 1, 4-butanediol.
Further, 80 parts of TPU particles, 75 parts of polyvinyl alcohol, 10 parts of 1, 4-butanediol and 25 parts of borate coupling agent
Compared with the prior art, the invention has the beneficial effects that: the TPU film obtained by the production process has the advantages of uniform thickness, wear resistance, good elasticity and toughness and the like, and effectively solves the problems of the existing TPU film.
Detailed Description
To further illustrate the contents, features and effects of the present invention, the present invention will be further described by way of the following examples. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and modifications may be made without departing from the spirit and scope of the invention.
The present invention is further illustrated in detail by the following examples and comparative groups:
example 1:
a method of producing a TPU film, comprising the steps of:
(1) according to the weight parts, 70 parts of TPU particles, 60 parts of polyvinyl alcohol, 5 parts of 1, 4-butanediol and 20 parts of borate coupling agent are uniformly mixed, put into a mixer and stirred and mixed for 15 minutes to obtain a uniformly mixed primary mixture;
(2) conveying the primary mixture to a hot air dryer through an automatic feeding system for drying for 1h, wherein the drying temperature is 90 ℃, and obtaining a secondary mixture;
(3) pumping the secondary mixture into a dehumidification dryer for drying for 3 hours at the drying temperature of 100 ℃ to obtain a tertiary mixture;
(4) and (3) conveying the three-level mixture into a casting machine through an automatic feeding system, and extruding to form a film.
The temperature of each section of the casting machine is set as follows: the barrel temperature was 155 ℃, the screen temperature 175 ℃, the elbow temperature 175 ℃, the junction temperature 145 ℃ and the die temperature 210 ℃.
Example 2:
a method of producing a TPU film, comprising the steps of:
(1) according to the weight parts, 85 parts of TPU particles, 80 parts of polyvinyl alcohol, 15 parts of 1, 5-pentanediol and 30 parts of borate coupling agent are uniformly mixed, put into a mixer and stirred and mixed for 20 minutes to obtain a uniformly mixed primary mixture;
(2) conveying the primary mixture to a hot air dryer through an automatic feeding system for drying for 2 hours at the drying temperature of 105 ℃ to obtain a secondary mixture;
(3) pumping the second-level mixture into a dehumidification dryer for drying for 4 hours at the drying temperature of 110 ℃ to obtain a third-level mixture;
(4) and (3) conveying the three-level mixture into a casting machine through an automatic feeding system, and extruding to form a film.
The temperature of each section of the casting machine is set as follows: the cylinder temperature was 140 ℃, the screen temperature was 170 ℃, the elbow temperature was 170 ℃, the connection temperature was 140 ℃ and the die head temperature was 200 ℃.
Example 3:
a method of producing a TPU film, comprising the steps of:
(1) uniformly mixing 80 parts by weight of TPU particles, 75 parts by weight of polyvinyl alcohol, 10 parts by weight of 1, 4-butanediol and 25 parts by weight of borate coupling agent, putting into a mixer, and stirring and mixing for 15-20 minutes to obtain a uniformly mixed primary mixture;
(2) conveying the primary mixture to a hot air dryer through an automatic feeding system for drying for 1-2h, wherein the drying temperature is 90-105 ℃, and obtaining a secondary mixture;
(3) pumping the secondary mixture into a dehumidification dryer for drying for 3-4h, wherein the drying temperature is 100-;
(4) and (3) conveying the three-level mixture into a casting machine through an automatic feeding system, and extruding to form a film.
Wherein, the temperature of each section of the casting machine is set as follows: the temperature of the charging barrel is 170 ℃, the temperature of the filter screen is 180 ℃, the temperature of the elbow is 180 ℃, the connection temperature is 150 ℃, and the temperature of the die head is 220 ℃.
The embodiments of the present invention have been described in detail, but the description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention. Any modification, equivalent replacement or improvement made within the scope of the application of the present invention shall be included in the protection scope of the present invention.
Claims (5)
1. A production method of a TPU film is characterized by comprising the following steps: which comprises the following steps:
(1) according to the weight parts, 70-85 parts of TPU particles, 60-80 parts of polyvinyl alcohol, 5-15 parts of chain extender and 20-30 parts of borate coupling agent are uniformly mixed, put into a mixer and stirred and mixed for 15-20 minutes to obtain a uniformly mixed first-grade mixture;
(2) conveying the primary mixture to a hot air dryer through an automatic feeding system for drying for 1-2h, wherein the drying temperature is 90-105 ℃, and obtaining a secondary mixture;
(3) pumping the secondary mixture into a dehumidification dryer for drying for 3-4h, wherein the drying temperature is 100-;
(4) and (3) conveying the three-level mixture into a casting machine through an automatic feeding system, and extruding to form a film.
2. A method of producing a TPU film as set forth in claim 1: the method is characterized in that: the temperature of each section of the casting machine is set as follows: the charging barrel temperature is 140-.
3. The method for producing a TPU film according to claim 1, wherein: the chain extender comprises any one or the combination of at least two of ethylene glycol, 1, 3-propylene glycol, 1, 4-butanediol or 1, 5-pentanediol.
4. A process for producing a TPU film as set forth in claim 3, characterized by: the chain extender is 1, 4-butanediol.
5. A method of producing a TPU film as set forth in claim 1: the method is characterized in that: 80 parts of TPU particles, 75 parts of polyvinyl alcohol, 10 parts of 1, 4-butanediol and 25 parts of borate coupling agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000425.7A CN110872432A (en) | 2018-08-30 | 2018-08-30 | Production method of TPU film |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811000425.7A CN110872432A (en) | 2018-08-30 | 2018-08-30 | Production method of TPU film |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110872432A true CN110872432A (en) | 2020-03-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201811000425.7A Withdrawn CN110872432A (en) | 2018-08-30 | 2018-08-30 | Production method of TPU film |
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| CN (1) | CN110872432A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572074A (en) * | 2020-05-21 | 2020-08-25 | 常熟宏巨新材料科技有限公司 | Preparation method of TPU thermoplastic polyurethane film |
-
2018
- 2018-08-30 CN CN201811000425.7A patent/CN110872432A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111572074A (en) * | 2020-05-21 | 2020-08-25 | 常熟宏巨新材料科技有限公司 | Preparation method of TPU thermoplastic polyurethane film |
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Application publication date: 20200310 |
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