CN116003860B - Preparation method of high-toughness light-transmitting environment-friendly plastic packaging film - Google Patents
Preparation method of high-toughness light-transmitting environment-friendly plastic packaging film Download PDFInfo
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- CN116003860B CN116003860B CN202211705201.2A CN202211705201A CN116003860B CN 116003860 B CN116003860 B CN 116003860B CN 202211705201 A CN202211705201 A CN 202211705201A CN 116003860 B CN116003860 B CN 116003860B
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- plastic packaging
- packaging film
- epoxy resin
- friendly plastic
- toughness
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- 229920003023 plastic Polymers 0.000 title claims abstract description 61
- 239000004033 plastic Substances 0.000 title claims abstract description 61
- 239000012785 packaging film Substances 0.000 title claims abstract description 41
- 229920006280 packaging film Polymers 0.000 title claims abstract description 41
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- 239000003822 epoxy resin Substances 0.000 claims abstract description 31
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 31
- 239000000758 substrate Substances 0.000 claims abstract description 25
- 239000003292 glue Substances 0.000 claims abstract description 24
- 239000006185 dispersion Substances 0.000 claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 239000011248 coating agent Substances 0.000 claims abstract description 16
- 238000000576 coating method Methods 0.000 claims abstract description 16
- 239000012783 reinforcing fiber Substances 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 76
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 42
- 239000004642 Polyimide Substances 0.000 claims description 33
- 229920001721 polyimide Polymers 0.000 claims description 33
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 30
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 30
- 238000010438 heat treatment Methods 0.000 claims description 14
- 229920002799 BoPET Polymers 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 10
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 9
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000003085 diluting agent Substances 0.000 claims description 9
- MQJKPEGWNLWLTK-UHFFFAOYSA-N Dapsone Chemical group C1=CC(N)=CC=C1S(=O)(=O)C1=CC=C(N)C=C1 MQJKPEGWNLWLTK-UHFFFAOYSA-N 0.000 claims description 7
- FQYUMYWMJTYZTK-UHFFFAOYSA-N Phenyl glycidyl ether Chemical compound C1OC1COC1=CC=CC=C1 FQYUMYWMJTYZTK-UHFFFAOYSA-N 0.000 claims description 7
- 238000005520 cutting process Methods 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 7
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 7
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 claims description 6
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 6
- 238000001132 ultrasonic dispersion Methods 0.000 claims description 6
- YSUQLAYJZDEMOT-UHFFFAOYSA-N 2-(butoxymethyl)oxirane Chemical group CCCCOCC1CO1 YSUQLAYJZDEMOT-UHFFFAOYSA-N 0.000 claims description 5
- ZZTCPWRAHWXWCH-UHFFFAOYSA-N diphenylmethanediamine Chemical compound C=1C=CC=CC=1C(N)(N)C1=CC=CC=C1 ZZTCPWRAHWXWCH-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- XRBXGZZMKCBTFP-UHFFFAOYSA-N 4-(2,2-dihydroxyethoxycarbonyl)benzoic acid Chemical compound OC(O)COC(=O)C1=CC=C(C(O)=O)C=C1 XRBXGZZMKCBTFP-UHFFFAOYSA-N 0.000 claims description 3
- 230000032050 esterification Effects 0.000 claims description 3
- 238000005886 esterification reaction Methods 0.000 claims description 3
- 238000006068 polycondensation reaction Methods 0.000 claims description 3
- 229920000139 polyethylene terephthalate Polymers 0.000 claims description 3
- -1 polyethylene terephthalate Polymers 0.000 claims description 3
- 239000005020 polyethylene terephthalate Substances 0.000 claims description 3
- 230000002194 synthesizing effect Effects 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 2
- 239000006227 byproduct Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 11
- 239000004841 bisphenol A epoxy resin Substances 0.000 description 8
- 238000004806 packaging method and process Methods 0.000 description 6
- 125000003277 amino group Chemical group 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 3
- 238000007792 addition Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 239000013306 transparent fiber Substances 0.000 description 1
Classifications
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Coating Of Shaped Articles Made Of Macromolecular Substances (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses a preparation method of a high-toughness light-transmitting environment-friendly plastic packaging film, which comprises the following steps of (1) uniformly coating epoxy resin glue solution on the surface of a transparent base film, standing and solidifying to obtain the transparent base; (2) Uniformly coating the reinforcing fiber dispersion liquid on the surface of the transparent substrate in the step (1), standing and drying to obtain the high-toughness light-transmitting environment-friendly plastic packaging film. The preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film has the advantages of simplicity in operation, safety, environment friendliness and no byproducts, meets the environment-friendly requirement, has the characteristics of high toughness and high transparency, and can effectively improve the experience of users.
Description
Technical Field
The invention relates to the technical field of plastic packaging films, in particular to a preparation method of a high-toughness light-transmitting environment-friendly plastic packaging film.
Background
The plastic packaging film, also called as thermal mounting film, protective card film, laminating film and overmoulding film, is a good helper for life photo and file plastic packaging film, the plastic packaging film needs to be matched with a plastic packaging machine for heating, different thickness needs to refer to different plastic packaging temperatures, and has the relation with the pressure and speed of the plastic packaging machine and the thickness of the plastic packaging film, and the plastic packaging film has the advantages that: dampproof, dustproof and fading-proof, protects files and photos and is used for a long time. Before using, cutting out the plastic package paper with proper size according to the size of the paper to be plastic-packaged, generally, the area of the plastic package paper needs to be larger than that of the paper to be plastic-packaged, flatly clamping the paper to be plastic-packaged between two layers of the plastic package paper, heating the paper to be plastic-packaged by a plastic package machine, sealing and wrapping the paper to be plastic-packaged by the plastic package paper after heating, and adhering the two opposite surfaces of the plastic package paper due to colloid, so that the paper can be waterproof to a certain extent, prolonging the service life, and when plastic packaging a data page, firstly separating the plastic package film, clamping the data page in the middle, enabling the gluing surface of the plastic package film to face the data page, then closing the plastic package film, heating the plastic package film from front to back, and pressing the plastic package film by front and back rubber rollers, and discharging the plastic package paper from a back discharging port, thereby achieving the purpose of plastic package. At present, the toughness of plastic packaging films in the market is poor, the plastic packaging films are difficult to bend during plastic packaging, and meanwhile, the transparency of the plastic packaging films is low, so that file data after plastic packaging cannot be seen clearly through the plastic packaging films, and the user experience is affected.
Disclosure of Invention
In view of the above, the present invention provides a method for preparing a high-toughness light-transmitting environment-friendly plastic packaging film to solve the above-mentioned problems.
The technical scheme adopted for solving the technical problems is as follows:
the preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film comprises the following steps:
(1) Uniformly coating epoxy resin glue solution on the surface of a transparent base film, standing and solidifying to obtain a transparent base;
(2) Uniformly coating the reinforcing fiber dispersion liquid on the surface of the transparent substrate in the step (1), standing and drying to obtain the high-toughness light-transmitting environment-friendly plastic packaging film.
Further, the transparent base film in the step (1) is a PET film, and the base material of the PET film is polyethylene terephthalate.
Further, the PET film is prepared by synthesizing dihydroxyethyl terephthalate by esterification of terephthalic acid and ethylene glycol and then performing polycondensation reaction.
Further, the epoxy resin glue solution in the step (1) is bisphenol A type epoxy resin glue solution or phenolic epoxy resin glue solution.
Further, the epoxy resin glue solution in the step (1) further comprises a curing agent and a reactive diluent, and the mass ratio of the epoxy resin to the curing agent to the reactive diluent is 10:2:3.
Further, the curing agent is diamino diphenyl sulfone or diamino diphenyl methane.
Further, the reactive diluent is n-butyl glycidyl ether or phenyl glycidyl ether.
Further, the reinforcing fiber dispersion liquid in the step (2) comprises polyimide fibers and polyvinyl alcohol fibers.
Further, the solvent of the reinforcing fiber dispersion liquid is N, N-dimethylformamide, and the mass ratio of the polyimide fibers to the polyvinyl alcohol fibers to the N, N-dimethylformamide is 1:1:4 to 6.
Further, the preparation method of the reinforcing fiber dispersion liquid comprises the following steps: and (3) cutting polyimide fibers and polyvinyl alcohol fibers, adding the cut polyimide fibers and the cut polyvinyl alcohol fibers into N, N-dimethylformamide, uniformly stirring, and performing ultrasonic dispersion to obtain the reinforced fiber dispersion liquid.
The beneficial effects of the invention are as follows:
(1) The high-toughness light-transmitting environment-friendly plastic packaging film takes the transparent PET film as a base material, and the transparent substrate is obtained by coating the epoxy resin glue solution on the transparent PET film, and the substrate is effectively combined with the epoxy resin, so that the obtained substrate not only has good light-transmitting performance, but also has hydroxyl groups, amino groups and other groups in epoxy resin molecular chains on the surface of the substrate, and the latter can form good binding force with the molecular chains of polyimide fibers and polyvinyl alcohol fibers, thereby improving the film forming property of the polyimide fibers and the polyvinyl alcohol fibers on the substrate, and further improving the toughness of the plastic packaging film.
(2) The polyimide fiber and the polyvinyl alcohol fiber selected by the invention are transparent fibers, and meanwhile, the molecular chain of the polyimide fiber contains-NR groups, and as the-NR groups are used as polar groups, the-NR groups can be compatible with hydroxyl groups, amino groups and other polar groups in the epoxy resin molecular chain on the surface of the substrate, and meanwhile, the polyimide fiber and the molecular chain of the polyvinyl alcohol fiber are entangled together, so that the polyimide fiber and the polyvinyl alcohol fiber can be effectively combined on the surface of the substrate, the bonding force of the fiber and the substrate is enhanced, and the transparency and toughness of the obtained substrate can be improved.
Detailed Description
The preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film comprises the following steps:
(1) The mass ratio of polyimide fiber to polyvinyl alcohol fiber to N, N-dimethylformamide is 1:1: 4-6, cutting polyimide fibers and polyvinyl alcohol fibers, adding the cut polyimide fibers and the polyvinyl alcohol fibers into N, N-dimethylformamide, uniformly stirring, and performing ultrasonic dispersion to obtain the reinforced fiber dispersion liquid.
(2) The mass ratio of the epoxy resin to the curing agent to the reactive diluent is 10:2: and 3, adding the curing agent and the reactive diluent into the epoxy resin, uniformly stirring to obtain epoxy resin glue solution, uniformly coating the epoxy resin glue solution on the surface of the transparent base film, and heating and curing to obtain the transparent base.
(3) Uniformly coating the reinforced fiber dispersion liquid in the step (1) on the surface of the transparent substrate in the step (2), and heating and drying to obtain the high-toughness light-transmitting environment-friendly plastic packaging film.
The transparent base film in the step (1) is a PET film, the base material of the PET film is polyethylene terephthalate, and the PET film is prepared by synthesizing dihydroxyethyl terephthalate by terephthalic acid and ethylene glycol esterification and then performing polycondensation reaction.
The epoxy resin glue solution in the step (1) is bisphenol A type epoxy resin glue solution or phenolic epoxy resin glue solution, the curing agent is diamino diphenyl sulfone or diamino diphenyl methane, and the active diluent is n-butyl glycidyl ether or phenyl glycidyl ether.
Example 1
The preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film comprises the following steps:
(1) The mass ratio of polyimide fiber to polyvinyl alcohol fiber to N, N-dimethylformamide is 1:1: and 4, cutting polyimide fibers and polyvinyl alcohol fibers, adding the cut polyimide fibers and the polyvinyl alcohol fibers into N, N-dimethylformamide, uniformly stirring, and performing ultrasonic dispersion to obtain the reinforced fiber dispersion liquid.
(2) The mass ratio of bisphenol A epoxy resin, diamino diphenyl sulfone and n-butyl glycidyl ether is 10:2: and 3, adding diamino diphenyl sulfone and n-butyl glycidyl ether into bisphenol A epoxy resin, uniformly stirring to obtain bisphenol A epoxy resin glue solution, uniformly coating the bisphenol A epoxy resin glue solution on the surface of a transparent base film, and heating and curing to obtain the transparent base.
(3) Uniformly coating the reinforced fiber dispersion liquid in the step (1) on the surface of the transparent substrate in the step (2), and heating and drying to obtain the high-toughness light-transmitting environment-friendly plastic packaging film.
Example 2
The preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film comprises the following steps:
(1) The mass ratio of polyimide fiber to polyvinyl alcohol fiber to N, N-dimethylformamide is 1:1: and 5, cutting polyimide fibers and polyvinyl alcohol fibers, adding the cut polyimide fibers and the polyvinyl alcohol fibers into N, N-dimethylformamide, uniformly stirring, and performing ultrasonic dispersion to obtain the reinforced fiber dispersion liquid.
(2) The mass ratio of the phenolic epoxy resin to the diaminodiphenyl methane to the phenyl glycidyl ether is 10:2: and 3, adding the diaminodiphenyl methane and the phenyl glycidyl ether into the phenolic epoxy resin, uniformly stirring to obtain phenolic epoxy resin glue solution, uniformly coating the phenolic epoxy resin glue solution on the surface of the transparent base film, and heating and curing to obtain the transparent base.
(3) Uniformly coating the reinforced fiber dispersion liquid in the step (1) on the surface of the transparent substrate in the step (2), and heating and drying to obtain the high-toughness light-transmitting environment-friendly plastic packaging film.
Example 3
The preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film comprises the following steps:
(1) The mass ratio of polyimide fiber to polyvinyl alcohol fiber to N, N-dimethylformamide is 1:1: and 6, cutting polyimide fibers and polyvinyl alcohol fibers, adding the cut polyimide fibers and the polyvinyl alcohol fibers into N, N-dimethylformamide, uniformly stirring, and performing ultrasonic dispersion to obtain the reinforced fiber dispersion liquid.
(2) The mass ratio of bisphenol A epoxy resin, diamino diphenyl sulfone and phenyl glycidyl ether is 10:2: and 3, adding diamino diphenyl sulfone and phenyl glycidyl ether into bisphenol A epoxy resin, uniformly stirring to obtain bisphenol A epoxy resin glue solution, uniformly coating the bisphenol A epoxy resin glue solution on the surface of a transparent base film, and heating and curing to obtain the transparent base.
(3) Uniformly coating the reinforced fiber dispersion liquid in the step (1) on the surface of the transparent substrate in the step (2), and heating and drying to obtain the high-toughness light-transmitting environment-friendly plastic packaging film.
Comparative example 1
The preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film of the comparative example is approximately the same as that of example 1, except that the polyvinyl alcohol fiber is not added to the reinforcing fiber dispersion liquid of the comparative example.
Comparative example 2
The preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film of the comparative example is approximately the same as that of example 1, except that polyimide fibers are not added to the reinforcing fiber dispersion liquid of the comparative example.
Comparative example 3
The preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film of the comparative example is approximately the same as that of the example 1, except that the transparent substrate is not coated with the reinforcing fiber dispersion liquid in the comparative example.
Experimental example
The high-toughness light-transmitting environment-friendly plastic packaging films prepared in examples 1 to 3 and comparative examples 1 to 3 were subjected to performance measurement such as viscosity, monomer content and color number, and specific results are shown in table 1:
table 1 high toughness light-transmitting environment protection plastic package film performance measuring table
As can be seen from the comparison of examples 1-3 and comparative examples 1-3 in Table 1, according to the preparation method of the present invention, the transparent substrate is obtained by coating the epoxy resin glue solution on the transparent PET film, and since the substrate is effectively combined with the epoxy resin, the obtained substrate not only has good light transmittance, but also has hydroxyl groups, amino groups and other groups in the epoxy resin molecular chain on the surface of the substrate, and the latter can form good binding force with the molecular chains of the polyimide fiber and the polyvinyl alcohol fiber, thereby improving the film forming property of the polyimide fiber and the polyvinyl alcohol fiber on the substrate, so as to improve the toughness of the plastic packaging film, and meanwhile, the molecular chain of the polyimide fiber contains-NR groups, and as-NR is a polar group, the polyimide fiber and the molecular chain of the polyvinyl alcohol fiber are entangled together, so that the polyimide fiber and the polyvinyl alcohol fiber can be effectively combined on the surface of the substrate, and the binding force of the polyimide fiber and the substrate is enhanced, and the obtained substrate can be improved, and the preparation method has the advantages of simple operation, environmental protection, high transparency, environmental protection, and high quality, and environmental protection.
The foregoing is merely a preferred embodiment of the present invention, and it should be noted that modifications and additions may be made to those skilled in the art without departing from the method of the present invention, which modifications and additions are also to be considered as within the scope of the present invention.
Claims (6)
1. The preparation method of the high-toughness light-transmitting environment-friendly plastic packaging film is characterized by comprising the following steps of:
(1) Uniformly coating epoxy resin glue solution on the surface of a transparent base film, and heating and curing to obtain a transparent base;
(2) Uniformly coating the reinforcing fiber dispersion liquid on the surface of the transparent substrate in the step (1), and heating and drying to obtain a high-toughness light-transmitting environment-friendly plastic packaging film;
The epoxy resin glue solution in the step (1) is bisphenol A type epoxy resin glue solution or phenolic epoxy resin glue solution, the reinforced fiber dispersion liquid in the step (2) comprises polyimide fibers and polyvinyl alcohol fibers, the solvent of the reinforced fiber dispersion liquid is N, N-dimethylformamide, and the mass ratio of the polyimide fibers to the polyvinyl alcohol fibers to the N, N-dimethylformamide is 1:1: 4-6, the preparation method of the reinforcing fiber dispersion liquid comprises the following steps: and (3) cutting polyimide fibers and polyvinyl alcohol fibers, adding the cut polyimide fibers and the cut polyvinyl alcohol fibers into N, N-dimethylformamide, uniformly stirring, and performing ultrasonic dispersion to obtain the reinforced fiber dispersion liquid.
2. The method for preparing the high-toughness light-transmitting environment-friendly plastic packaging film according to claim 1, wherein the transparent base film in the step (1) is a PET film, and the base material of the PET film is polyethylene terephthalate.
3. The method for preparing the high-toughness light-transmitting environment-friendly plastic packaging film according to claim 2, wherein the PET film is prepared by synthesizing dihydroxyethyl terephthalate by esterification of terephthalic acid and ethylene glycol and then performing polycondensation reaction.
4. The method for preparing the high-toughness light-transmitting environment-friendly plastic packaging film according to claim 1, wherein the epoxy resin glue solution in the step (1) further comprises a curing agent and a reactive diluent, and the mass ratio of the epoxy resin to the curing agent to the reactive diluent is 10:2:3.
5. The method for preparing the high-toughness light-transmitting environment-friendly plastic packaging film according to claim 4, wherein the curing agent is diamino diphenyl sulfone or diamino diphenyl methane.
6. The method for preparing the high-toughness light-transmitting environment-friendly plastic packaging film according to claim 4, wherein the reactive diluent is n-butyl glycidyl ether or phenyl glycidyl ether.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211705201.2A CN116003860B (en) | 2022-12-29 | 2022-12-29 | Preparation method of high-toughness light-transmitting environment-friendly plastic packaging film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202211705201.2A CN116003860B (en) | 2022-12-29 | 2022-12-29 | Preparation method of high-toughness light-transmitting environment-friendly plastic packaging film |
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| CN116003860A CN116003860A (en) | 2023-04-25 |
| CN116003860B true CN116003860B (en) | 2024-06-18 |
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Citations (4)
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|---|---|---|---|---|
| CN103408772A (en) * | 2013-07-17 | 2013-11-27 | 北京化工大学 | High-performance polyimide fiber reinforced epoxy resin composite material and preparation method thereof |
| CN113284646A (en) * | 2021-03-31 | 2021-08-20 | 浙江中科玖源新材料有限公司 | Flexible transparent conductive film and preparation method thereof |
| CN113908694A (en) * | 2021-09-18 | 2022-01-11 | 中国科学院重庆绿色智能技术研究院 | Enhanced nano composite forward osmosis membrane and preparation method and application thereof |
| CN114940773A (en) * | 2022-06-21 | 2022-08-26 | 拓迪化学(上海)有限公司 | PET/epoxy resin ultrathin composite film and preparation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009203312A (en) * | 2008-02-27 | 2009-09-10 | Toyobo Co Ltd | Polyimide fiber-reinforced epoxy resin platelet and method for producing the same |
| CN115197631A (en) * | 2021-03-26 | 2022-10-18 | 宁波激智科技股份有限公司 | Hardening and toughening coating composition, preparation method thereof and PET (polyethylene terephthalate) film |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103408772A (en) * | 2013-07-17 | 2013-11-27 | 北京化工大学 | High-performance polyimide fiber reinforced epoxy resin composite material and preparation method thereof |
| CN113284646A (en) * | 2021-03-31 | 2021-08-20 | 浙江中科玖源新材料有限公司 | Flexible transparent conductive film and preparation method thereof |
| CN113908694A (en) * | 2021-09-18 | 2022-01-11 | 中国科学院重庆绿色智能技术研究院 | Enhanced nano composite forward osmosis membrane and preparation method and application thereof |
| CN114940773A (en) * | 2022-06-21 | 2022-08-26 | 拓迪化学(上海)有限公司 | PET/epoxy resin ultrathin composite film and preparation method thereof |
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