CN115636970B - Hydrolysable medicinal packaging material - Google Patents
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- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
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Abstract
The invention discloses a hydrolysable medicinal packaging material, which belongs to the technical field of medicinal packaging and comprises the following components in parts by weight: material A, film base material: 50-90 parts of polyvinyl alcohol, 10-20 parts of polyethylene glycol, 5-10 parts of modified fiber particles, 5-10 parts of glycerol, 5-10 parts of polyether sulfone, 0.8-1.5 parts of ethyl p-hydroxybenzoate, 0.1-0.5 part of nano silver particles and 0.5-1 part of sodium sulfate; b, curing liquid: 10-15 parts of acidic silica sol, 5-10 parts of silane coupling agent and nano TiO 2 0.1-0.5 part, 5-10 parts of hydroxypropyl acrylate and 0.5-1 part of ethylene glycol diacrylate. According to the invention, when the film is used as a substrate to package the medicine, the package can be boiled and hydrolyzed, the packaging recovery difficulty is reduced, the biological environment-friendly effect is improved, the antibacterial capability and the tensile strength of the outer part of the film can be improved after ultraviolet curing is carried out on the modified curing liquid after the base layer is prepared, and the adhesive strength and the treatment effect of the curing liquid layer can be improved by adding filler particles into the curing liquid.
Description
Technical Field
The invention belongs to the technical field of medicinal packaging, and particularly relates to a hydrolysable medicinal packaging material.
Background
The water-soluble plastic film is a water-soluble degradable novel green packaging material, the existing water-soluble plastic film is mostly made of polyvinyl alcohol PVA composite material, the polyvinyl alcohol is a commercial and industrial combination product, and the film-forming property, the low toxicity, the excellent mechanical property, the solubility and the biodegradability are typical characteristics of the high molecular polymer.
In the related technology, the stronger degradability of a water-soluble plastic film is utilized and applied to a packaging material, and the Chinese patent CN109098041B discloses an antibacterial hydrolysis paper-based packaging material and a preparation method thereof, wherein the antibacterial hydrolysis paper-based packaging material comprises base paper and is characterized in that: the surface of the base paper is coated with a layer of antibacterial hydrolysis film, and the antibacterial hydrolysis film is prepared from the following raw materials in parts by weight: 30-35 parts of onion, 3-6 parts of salt, 60-70 parts of water and 10-13 parts of polyvinyl alcohol; the obtained packaging material has antibacterial and hydrolyzing effects; belongs to food-grade protective functional paper packaging materials with antibacterial and dampproof requirements, and can be widely applied to packaging of baked foods and related products which are easy to mildew; however, in actual use, the hydrolysis membrane in the scheme realizes an antibacterial effect through coating of the antibacterial coating liquid, but the coating treatment process is difficult, the adhesion bonding degree is low, the coating layer can fall off due to physical impact in the transportation process, the requirement of large-scale processing is influenced, the durable service life of the package is influenced, and the requirement of long-time storage treatment cannot be met.
Disclosure of Invention
The invention aims to: the hydrolysable medicinal packaging material is provided in order to solve the problems that the hydrolytic film achieves an antibacterial effect through coating of an antibacterial coating liquid, but the coating treatment process is difficult, the bonding degree is low, and a coating layer can fall off due to physical impact in the transportation process, so that the packaging durability is influenced while large-scale processing is influenced.
In order to achieve the purpose, the invention adopts the following technical scheme:
a hydrolysable medicinal packaging material comprises the following components in parts by weight: material A, film base material: 50-90 parts of polyvinyl alcohol, 10-20 parts of polyethylene glycol, 5-10 parts of modified fiber particles, 5-10 parts of glycerol, 5-10 parts of polyether sulfone, 0.8-1.5 parts of ethyl p-hydroxybenzoate, 0.1-0.5 part of nano silver particles and 0.5-1 part of sodium sulfate;
b, curing liquid: 10-15 parts of acidic silica sol, 5-10 parts of silane coupling agent and nano TiO 2 0.1-0.5 part, 5-10 parts of hydroxypropyl acrylate and 0.5-1 part of ethylene glycol diacrylate.
As a further description of the above technical solution:
the modified fiber particles are modified konjac glucomannan fibers.
As a further description of the above technical solution:
the modified konjac glucomannan fiber is modified by blending cationic chitosan.
As a further description of the above technical solution:
the silane coupling agent is methyl trimethoxy silane, propyl trimethoxy silane and vinyl triethoxy silane, and the ratio of methyl trimethoxy silane to propyl trimethoxy silane to vinyl triethoxy silane is 1.
As a further description of the above technical solution:
the processing method of the medicinal packaging material comprises the following steps:
s1, pretreating raw materials, namely adding polyvinyl alcohol, sodium sulfate and polyethylene glycol particles with the formula amount into a drying kettle, fully drying for 6-8 hours at 50-60 ℃, fully crushing nano silver particles with the formula amount, sieving the crushed nano silver particles, and standing for later use;
s2, blending, namely fully mixing polyvinyl alcohol, sodium sulfate and polyethylene glycol particles, sequentially adding modified fiber particles, glycerol, polyether sulfone and ethyl p-hydroxybenzoate, heating, blending and stirring for 20-40 min;
s3, extruding the material A, granulating and extruding the material A by a double-screw extruder, and extruding the material A into a film by the extruder;
s4, cooling, namely moving a subsequent spraying platform after the extruded film is wound by a tail end winding machine under the cooling of non-contact wind power cooling equipment;
s5, atomizing and spraying a curing liquid on the surface of the film, pre-configuring the curing liquid, then sending the curing liquid into an atomizing tank, and when the film moves to an atomizing nozzle on one side of the atomizing tank, atomizing the curing liquid by the atomizing nozzle, and then uniformly spraying the atomized curing liquid to the top of the extruded and cooled film;
s6, curing through ultraviolet irradiation, moving the film with the curing agent sprayed on the top into a through type ultraviolet curing device, and curing through ultraviolet lamp irradiation to finish film coating curing;
s7, winding into a film, and winding the modified coating film material by subsequent winding equipment through mechanical energy to obtain the packaging material.
As a further description of the above technical solution:
the temperature of each section of the cylinder is 120, 150, 155, 160, 155 ℃ and 155 ℃ respectively, the die head temperature is 150 ℃, and the rotating speed is 25r/min during granulation by the extruder.
As a further description of the above technical solution:
the temperatures of all sections of the charging barrel during extrusion of the extruder are 125, 150 and 155 ℃, the die head temperature is 140 ℃, the rotating speed is 15r/min, and the traction speed is 9mm/min.
As a further description of the above technical solution:
the preparation method of the curing liquid comprises the following steps: mixing organosilane coupling agent, water and ethanol according to the formula ratio, stirring, hydrolyzing, heating to 40-60 ℃, adding acidic silica sol, reacting fully, slowly adding 5-10 parts of hydroxypropyl acrylate, distilling under reduced pressure to obtain hybrid sol, adding 5-10 parts of ethylene glycol diacrylate, stirring uniformly, adding nano TiO 2 Dispersing with distilled water and methanol solvent under ultrasonic wave for 20-30min, adding into rotary evaporator, and removing excessive water to obtain coating solution.
As a further description of the above technical solution:
the power of the ultraviolet lamp is 800-1000w, the wavelength of the ultraviolet is 365nm, and the irradiation time is 2-3min.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. according to the invention, through blending extrusion of the modified konjac glucomannan fiber and polyvinyl alcohol, the biocompatibility and the degradability of the film can be improved, when the film is used as a substrate for medicinal packaging, the packaging can be boiled and hydrolyzed, the packaging recovery difficulty is reduced, and the biological environment-friendly property is improved, and after the substrate is prepared and is subjected to ultraviolet curing through the modified curing liquid, the antibacterial ability and the tensile strength of the outer part of the film can be improved, and through adding filler particles into the curing liquid, the adhesive strength and the treatment effect of the cured liquid layer can be improved.
2. According to the invention, the modified konjac glucomannan fiber is added into the raw material, the cationic chitosan blended modified konjac glucomannan fiber can improve the bonding strength with a solidified layer of a solidified liquid, the medicinal packaging effect of the medicinal packaging material integrated by a film is improved, the intermolecular force can be weakened through the amino group of the cationic chitosan, and the bonding effect between the solidified layer and the base layer is further improved.
Detailed description of the preferred embodiments
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention provides a technical scheme that: a hydrolysable medicinal packaging material comprises the following components in parts by weight: material A, film base material: 50 parts of polyvinyl alcohol, 10 parts of polyethylene glycol, 5 parts of modified fiber particles, 5 parts of glycerol, 5 parts of polyether sulfone, 0.8 part of ethyl p-hydroxybenzoate, 0.1 part of nano-silver particles and 0.5 part of sodium sulfate;
b, curing liquid: 10 parts of acidic silica sol, 5 parts of silane coupling agent and nano TiO 2 0.1 part of modified konjac glucomannan fiber, 5 parts of hydroxypropyl acrylate and 0.5 part of ethylene glycol diacrylate, wherein the modified konjac glucomannan fiber is modified by blending cationic chitosan, the silane coupling agent is methyltrimethoxysilane, propyltrimethoxysilane and vinyltriethoxysilane, and the ratio of the methyltrimethoxysilane, the propyltrimethoxysilane and the vinyltriethoxysilane is 1;
the processing method of the medicinal packaging material comprises the following steps:
s1, pretreating raw materials, namely adding polyvinyl alcohol, sodium sulfate and polyethylene glycol particles with the formula amount into a drying kettle, fully drying for 6 hours at 50 ℃, fully crushing nano silver particles with the formula amount, sieving and standing for later use;
s2, blending, namely fully mixing polyvinyl alcohol, sodium sulfate and polyethylene glycol particles, sequentially adding modified fiber particles, glycerol, polyether sulfone and ethyl p-hydroxybenzoate, heating, blending and stirring for 20min;
s3, extruding the material A, granulating and extruding the material A by a double-screw extruder, and extruding the material A into a film by the extruder;
s4, cooling, namely moving a subsequent spraying platform after the extruded film is wound by a tail end winding machine under the cooling of the non-contact wind power cooling equipment;
s5, atomizing and spraying a curing liquid on the surface of the film, pre-configuring the curing liquid, then sending the curing liquid into an atomizing tank, and when the film moves to an atomizing nozzle on one side of the atomizing tank, atomizing the curing liquid by the atomizing nozzle, and then uniformly spraying the atomized curing liquid to the top of the extruded and cooled film;
s6, curing through ultraviolet irradiation, moving the film with the curing agent sprayed on the top into a through type ultraviolet curing device, and curing through ultraviolet lamp irradiation to finish film coating curing;
s7, winding into a film, and winding the modified coating film material by subsequent winding equipment through mechanical energy to obtain a packaging material;
the preparation method of the curing liquid comprises the following steps of (1) respectively controlling the temperatures of all sections of a cylinder during granulation by an extruder to be 120, 150, 155, 160, 155 and 155 ℃, controlling the die head temperature to be 150 ℃ and the rotating speed to be 25r/min, controlling the temperatures of all sections of the cylinder during extrusion by the extruder to be 125, 150 and 155 ℃, controlling the die head temperature to be 140 ℃, controlling the rotating speed to be 15r/min and controlling the traction speed to be 9mm/min, wherein the preparation method of the curing liquid comprises the following steps: mixing organosilane coupling agent, water and ethanol according to the formula ratio, stirring, hydrolyzing, heating to 40 ℃, adding acidic silica sol, fully reacting, slowly adding 5 parts of hydroxypropyl acrylate, carrying out reduced pressure distillation to obtain hybrid sol, adding 5 parts of ethylene glycol diacrylate, uniformly stirring, adding nano TiO 2 Dispersing the mixture in distilled water and methanol solvent by ultrasonic waves for 20-30min, adding a rotary evaporator, and removing excessive water to obtain a coating liquid, wherein the power of an ultraviolet lamp is 800w, the wavelength of ultraviolet rays is 365nm, and the irradiation time is 2min.
Example 2
The invention provides a technical scheme that: a hydrolysable medicinal packaging material comprises the following components in parts by weight: material A, film base material: 75 parts of polyvinyl alcohol, 15 parts of polyethylene glycol, 8 parts of modified fiber particles, 7 parts of glycerol, 7 parts of polyether sulfone, 1.2 parts of ethyl p-hydroxybenzoate, 0.3 part of nano-silver particles and 0.8 part of sodium sulfate;
b material curing liquid: 12 parts of acidic silica sol, 8 parts of silane coupling agent and nano TiO 2 0.3 parts of hydroxypropyl acrylate and 0.8 parts of ethylene glycol diacrylate, wherein the modified fiber particles are modified konjac glucomannan fibers, the modified konjac glucomannan fibers are modified by blending cationic chitosan, the silane coupling agents are methyltrimethoxysilane, propyltrimethoxysilane and vinyltriethoxysilane, and the ratio of the methyltrimethoxysilane, the propyltrimethoxysilane and the vinyltriethoxysilane is 1;
the processing method of the medicinal packaging material comprises the following steps:
s1, pretreating raw materials, namely adding polyvinyl alcohol, sodium sulfate and polyethylene glycol particles with the formula amount into a drying kettle, fully drying for 7 hours at 55 ℃, fully crushing nano silver particles with the formula amount, sieving and standing for later use;
s2, blending, namely fully mixing polyvinyl alcohol, sodium sulfate and polyethylene glycol particles, sequentially adding modified fiber particles, glycerol, polyether sulfone and ethyl p-hydroxybenzoate, heating, blending and stirring for 30min;
s3, extruding the material A, granulating and extruding the material A by a double-screw extruder, and extruding the material A into a film by the extruder;
s4, cooling, namely moving a subsequent spraying platform after the extruded film is wound by a tail end winding machine under the cooling of non-contact wind power cooling equipment;
s5, atomizing and spraying a curing liquid on the surface of the film, pre-configuring the curing liquid, then sending the curing liquid into an atomizing tank, and when the film moves to an atomizing nozzle on one side of the atomizing tank, atomizing the curing liquid by the atomizing nozzle, and then uniformly spraying the atomized curing liquid to the top of the extruded and cooled film;
s6, curing through ultraviolet irradiation, moving the film with the top sprayed with the curing agent into a pass-through ultraviolet curing device, and curing through ultraviolet lamp irradiation to finish film coating curing;
s7, winding into a film, and winding the modified coating film material by subsequent winding equipment through mechanical energy to obtain a packaging material;
the temperature of each section of the cylinder is 120, 150, 155, 160, 155 ℃, the die head temperature is 150 ℃, the rotating speed is 25r/min, the temperature of each section of the cylinder is 125, 150, 155 ℃, the die head temperature is 140 ℃, the rotating speed is 15r/min, the traction speed is 9mm/min, and the preparation method of the curing liquid comprises the following steps: mixing organosilane coupling agent, water and ethanol according to the formula ratio, stirring, hydrolyzing, heating to 50 ℃, adding acidic silica sol, fully reacting, slowly adding 8 parts of hydroxypropyl acrylate, carrying out reduced pressure distillation to obtain hybrid sol, adding 8 parts of ethylene glycol diacrylate, uniformly stirring, adding nano TiO 2 Dispersing the mixture in distilled water and a methanol solvent by ultrasonic waves for 25min, adding a rotary evaporator, and removing excessive water to obtain a coating liquid, wherein the power of an ultraviolet lamp is 900w, the wavelength of ultraviolet rays is 365nm, and the irradiation time is 2.5min.
Example 3
The invention provides a technical scheme that: a hydrolysable medicinal packaging material comprises the following components in parts by weight: material A, film base material: 90 parts of polyvinyl alcohol, 20 parts of polyethylene glycol, 10 parts of modified fiber particles, 10 parts of glycerol, 10 parts of polyether sulfone, 1.5 parts of ethyl p-hydroxybenzoate, 0.5 part of nano-silver particles and 1 part of sodium sulfate;
b material curing liquid: 15 parts of acidic silica sol, 10 parts of silane coupling agent and nano TiO 2 0.5 part of modified konjac glucomannan fiber, 10 parts of hydroxypropyl acrylate and 1 part of ethylene glycol diacrylate, wherein the modified fiber particles are modified konjac glucomannan fiber, the modified konjac glucomannan fiber is modified by blending cationic chitosan, the silane coupling agent is methyltrimethoxysilane, propyltrimethoxysilane and vinyltriethoxysilane, and the ratio of the methyltrimethoxysilane, the propyltrimethoxysilane and the vinyltriethoxysilane is 1;
the processing method of the medicinal packaging material comprises the following steps:
s1, pretreating raw materials, namely adding polyvinyl alcohol, sodium sulfate and polyethylene glycol particles with the formula amount into a drying kettle, fully drying for 8 hours at the temperature of 60 ℃, fully crushing nano silver particles with the formula amount, sieving and standing for later use;
s2, blending, namely fully mixing polyvinyl alcohol, sodium sulfate and polyethylene glycol particles, sequentially adding modified fiber particles, glycerol, polyether sulfone and ethyl p-hydroxybenzoate, heating, blending and stirring for 40min;
s3, extruding the material A, granulating and extruding the material A by a double-screw extruder, and extruding the material A into a film by the extruder;
s4, cooling, namely moving a subsequent spraying platform after the extruded film is wound by a tail end winding machine under the cooling of non-contact wind power cooling equipment;
s5, atomizing and spraying a curing liquid on the surface of the film, pre-configuring the curing liquid, then sending the curing liquid into an atomizing tank, and when the film moves to an atomizing nozzle on one side of the atomizing tank, atomizing the curing liquid by the atomizing nozzle, and then uniformly spraying the atomized curing liquid to the top of the extruded and cooled film;
s6, curing through ultraviolet irradiation, moving the film with the curing agent sprayed on the top into a through type ultraviolet curing device, and curing through ultraviolet lamp irradiation to finish film coating curing;
s7, winding into a film, and winding the modified coating film material by subsequent winding equipment through mechanical energy to obtain a packaging material;
the temperature of each section of the cylinder is 120, 150, 155, 160, 155 ℃, the die head temperature is 150 ℃, the rotating speed is 25r/min, the temperature of each section of the cylinder is 125, 150, 155 ℃, the die head temperature is 140 ℃, the rotating speed is 15r/min, the traction speed is 9mm/min, and the preparation method of the curing liquid comprises the following steps: mixing organosilane coupling agent, water and ethanol according to the formula ratio, stirring, hydrolyzing, heating to 60 ℃, adding acidic silica sol, slowly adding hydroxypropyl acrylate 10 parts after full reaction, carrying out reduced pressure distillation to obtain hybrid sol, adding ethylene glycol diacrylate 10 parts, uniformly stirring, and adding nano TiO 2 Dispersing distilled water and methanol solvent for 30min by ultrasonic wave, adding into a rotary evaporator, removing excessive water to obtain coating solution, and regulating power of the ultraviolet lamp1000w, ultraviolet wavelength 365nm, and irradiation time of 3min.
The films prepared in examples 1-3 are mixed according to the formula: 5000 portions of polyvinyl alcohol, 1500 portions of starch, 5 portions of surfactant, 35 portions of plasticizer and 1 portion of anti-sticking agent are taken as comparative examples, a performance tensile test is carried out, a poaching and heating decomposition test is carried out, the tensile performance, the tearing resistance and the water solubility of the film are obtained by testing, as shown in the following table,
as can be seen from the above table, the physical properties and hydrolysis efficiency of the product prepared in example 2 are high, and the product is a preferred embodiment of the present invention.
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 to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (4)
1. A hydrolysable medicinal packaging material is characterized by comprising the following components in parts by weight: material A, film base material: 50-90 parts of polyvinyl alcohol, 10-20 parts of polyethylene glycol, 5-10 parts of modified fiber particles, 5-10 parts of glycerol, 5-10 parts of polyether sulfone, 0.8-1.5 parts of ethyl p-hydroxybenzoate, 0.1-0.5 part of nano silver particles and 0.5-1 part of sodium sulfate;
b, curing liquid: 10-15 parts of acidic silica sol, 5-10 parts of silane coupling agent and nano TiO 2 0.1-0.5 part, 5-10 parts of hydroxypropyl acrylate and 0.5-1 part of ethylene glycol diacrylate;
the modified fiber particles are modified konjac glucomannan fibers, and the modified konjac glucomannan fibers are modified by blending cationic chitosan;
the silane coupling agent is methyl trimethoxy silane, propyl trimethoxy silane and vinyl triethoxy silane, and the ratio of methyl trimethoxy silane to propyl trimethoxy silane to vinyl triethoxy silane is 1;
the processing method of the medicinal packaging material comprises the following steps:
s1, pretreating raw materials, namely adding polyvinyl alcohol, sodium sulfate and polyethylene glycol particles with the formula amount into a drying kettle, fully drying for 6-8 hours at 50-60 ℃, fully crushing nano silver particles with the formula amount, sieving and standing for later use;
s2, blending, namely fully mixing polyvinyl alcohol, sodium sulfate and polyethylene glycol particles, sequentially adding modified fiber particles, glycerol, polyether sulfone and ethyl p-hydroxybenzoate, heating, blending and stirring for 20-40 min;
s3, extruding the material A, granulating and extruding the material A by a double-screw extruder, and extruding the material A into a film by the extruder;
s4, cooling, namely moving a subsequent spraying platform after the extruded film is wound by a tail end winding machine under the cooling of non-contact wind power cooling equipment;
s5, atomizing and spraying a curing liquid on the surface of the film, pre-configuring the curing liquid, then sending the curing liquid into an atomizing tank, and when the film moves to an atomizing nozzle on one side of the atomizing tank, atomizing the curing liquid by the atomizing nozzle, and then uniformly spraying the atomized curing liquid to the top of the extruded and cooled film;
s6, curing through ultraviolet irradiation, moving the film with the curing agent sprayed on the top into a through type ultraviolet curing device, and curing through ultraviolet lamp irradiation to finish film coating curing;
s7, winding into a film, and mechanically winding the modified coating film material by subsequent winding equipment to obtain a packaging material;
the preparation method of the curing liquid comprises the following steps: mixing an organosilane coupling agent, water and ethanol according to a formula ratio, stirring, hydrolyzing, heating to 40-60 ℃, adding acidic silica sol, slowly adding 5-10 parts of hydroxypropyl acrylate after full reaction, carrying out reduced pressure distillation to obtain hybrid sol, adding 0.5-1 part of ethylene glycol diacrylate, uniformly stirring, adding nano TiO2, distilled water and a methanol solvent, carrying out ultrasonic dispersion for 20-30min, adding a rotary evaporator, and removing excessive water to obtain a coating liquid.
2. A hydrolysable pharmaceutical packaging material according to claim 1, wherein the extruder is pelletised at barrel temperatures of 120, 150, 155, 160, 155 and 155 ℃, die temperature 150 ℃ and rotational speed 25r/min.
3. A hydrolysable pharmaceutical packaging material according to claim 1, wherein the extruder is adapted to extrude at barrel temperatures of 125, 150 and 155 ℃, die temperature of 140 ℃, rotational speed of 15r/min, and haul-off speed of 9mm/min.
4. A hydrolysable pharmaceutical packaging material according to claim 1, wherein the uv lamp power is 800-1000w, the uv wavelength is 365nm, and the irradiation time is 2-3min.
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| AU2004325362B2 (en) * | 2004-12-03 | 2012-09-06 | Council Of Scientific And Industrial Research | Process of preparation of biodegradable films from semi refined kappa carrageenan |
| CN101935457A (en) * | 2009-06-30 | 2011-01-05 | 深圳大学 | Method for manufacturing high-refractive index TiO2/organic silicon hybrid coating |
| CN103172957B (en) * | 2013-03-22 | 2015-11-25 | 南通三信塑胶装备科技股份有限公司 | The adjustable hydrolysis plastics film of a kind of temperature |
| CN103171073B (en) * | 2013-03-22 | 2016-01-20 | 南通三信塑胶装备科技股份有限公司 | The adjustable hydrolysis plastic film production process of a kind of temperature |
| CN103331108B (en) * | 2013-07-12 | 2015-07-15 | 中国能源建设集团安徽省电力设计院有限公司 | Polymer pervaporation membrane prepared by dialysis method after membrane formation and preparation method of polymer pervaporation membrane |
| CN104387958A (en) * | 2014-12-03 | 2015-03-04 | 四川优特光电科技有限公司 | Ultraviolet-curing insulating paint with high heat resistance grade and preparation method of ultraviolet-curing insulating paint with high heat resistance grade |
| CN105542365A (en) * | 2016-01-20 | 2016-05-04 | 中山北化高分子材料有限公司 | Modified PVA composite packaging film and preparation method thereof |
| CN106832708A (en) * | 2017-03-07 | 2017-06-13 | 钟浪雅 | A kind of hemostasis film formulation hydrolyzed under high temperature |
| DE102019210040A1 (en) * | 2019-07-08 | 2021-01-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Use of phenolically substituted sugar derivatives as stabilizers, plastics composition, processes for stabilizing plastics and phenolically substituted sugar derivatives |
| CN112961451A (en) * | 2020-10-30 | 2021-06-15 | 北京一撕得物流技术有限公司 | Cross-linked modified blow-molded PVA high-temperature water-soluble film and preparation method thereof |
| CN112760035B (en) * | 2020-12-30 | 2022-04-08 | 中国科学院宁波材料技术与工程研究所 | Photocuring composite flexible anti-reflection coating and preparation method and application thereof |
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