CN103923454A - Chitin film and preparation method thereof - Google Patents
Chitin film and preparation method thereof Download PDFInfo
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- CN103923454A CN103923454A CN201410156349.4A CN201410156349A CN103923454A CN 103923454 A CN103923454 A CN 103923454A CN 201410156349 A CN201410156349 A CN 201410156349A CN 103923454 A CN103923454 A CN 103923454A
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- chitin
- polyurethane resin
- flame retardant
- retardant polyurethane
- film
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Abstract
The invention discloses a chitin film and a preparation method thereof. The chitin film comprises flame retardant polyurethane resin as well as 8%-12% of soluble chitin, 1%-2% of extinction powder, 0.4%-0.6% of a stripping aid, 1%-2% of a flatting agent and 25%-65% of a solvent by mass percent of the flame retardant polyurethane resin. The chitin film is good in breathability, waterproofness, fireproofness and flame retardancy and has the effects of killing bacteria, preventing mildew, repairing, and adsorbing and decomposing harmful organic gas by optimizing the contents of the raw material components.
Description
Technical field
The present invention relates to chitin technical field, relate in particular to a kind of chitin film and preparation method.
Background technology
Chitin is the positive foodstuff fibre of the rare positively charged of nature, is a kind of very abundant natural resource, and output is only second to Mierocrystalline cellulose, estimates 10,000,000,000 tons of the annual biosynthetic chitins of nature nearly.The ethanoyl that chitin is sloughed wherein through concentrated base processing just becomes soluble chitin, claims again chitosan or chitosan.This chitosan is a large amount of amino owing to existing in its macromolecular structure, thereby has greatly improved solvability and the chemically reactive of chitin, therefore makes it be with a wide range of applications in medical treatment, nutrition and health care field.Due in its molecular structure with undersaturated cation group, thereby electronegative all kinds of objectionable impuritiess are had to powerful adsorption.It also can remove " rubbish " in human body, the object of reach preventing disease, promoting longevity equally.Because chitin has this unique function, it is described as and protein, fat, carbohydrate, VITAMIN, mineral substance human body the 6th vital principle of equal importance by American-European scientist.
Urethane resin, as a kind of macromolecular material with high strength, anti tear, antiwear characteristic, has the premium propertiess such as nontoxic, pollution-free.In field widespread uses such as daily life, industrial and agricultural production, medical science.In flame retardant polyurethane resin, be added with fire retardant, realize fire retardant effect not affecting under urethane performance.
Can be applied in flame retardant polyurethane resin by chitin, performance advantage separately, so as to improving overall performance.
Summary of the invention
The object of the invention is to propose on the one hand a kind of chitin film, this chitin film has good air permeable waterproof, fire-retardant fireproof and has effect of the harmful organic gas of fungus and mildew resistance, repairing and adsorption-decomposition function.
For reaching this object, the present invention by the following technical solutions:
A kind of chitin film, comprises flame retardant polyurethane resin, and in the quality of flame retardant polyurethane resin, 8%～12% soluble chitin, 1～2% flatting silica, 0.4～0.6% help stripping agent, 1～2% flow agent, 25～65% solvent.
Preferably, chitin film comprises flame retardant polyurethane resin, and in the quality of fire-retardant polyurethane resin, 12% soluble chitin, 1.5% flatting silica, 0.5% help stripping agent, 1.5% flow agent, 0.1～2% catalyzer, 40% solvent.
Preferably, solvent is compositions a kind of in butanone, toluene, dimethyl formamide or at least two kinds.
Preferably, catalyzer is compositions a kind of in dibutyl tin laurate, stannous octoate, dibutyltin diacetate or at least 2 kinds.
Preferably, flatting silica is OK-412 flatting silica, and flow agent is C
1～10alkyl-modified organopolysiloxane, helping stripping agent is polyether-modified polydimethylsiloxane.
Chitin is cationic natural polymer, has the good effect of controlling bacterium, mould, repairing, and pure natural has no side effect.In chitin, be rich in amino, need to become soluble chitin through de-acetyl and just present, its amino presents powerful effect adsorption-decomposition function organic obnoxious flavour.Chitin is high molecular weight material, and its molecular weight can reach more than 1,000,000.Molecular weight more high absorption capacity is stronger, is applicable to industry and field of Environment Protection.
The present invention provides a kind of method of preparing above-mentioned chitin film on the other hand, and the chitin film that the method obtains has good air permeable waterproof, fire-retardant fireproof and has effect of fungus and mildew resistance, repairing, the harmful organic gas of adsorption-decomposition function.
A method of preparing above-mentioned chitin film, is characterized in that, comprises the following steps:
(1) by flame retardant polyurethane resin, and in the quality of flame retardant polyurethane resin, 8%～12% chitin, 1～2% flatting silica, 0.4～0.6% help stripping agent, 1～2% flow agent, 25～65% solvent are thoroughly mixed to form glue;
(2) by glue application on the base material of coating board;
(3) dry to coated substrate, solvent evaporates, obtains film.
Preferably, the middle mixing process of step (1) for to be fully uniformly mixed in 45～55 DEG C of water-baths.
Preferably, the glue spread of coating is 160～250g/m
2, base material is separate-type paper.
Preferably, the described drying process of step (3) is that coated substrate is passed through to 60～150 DEG C of baking ovens with the speed of 10～20m/min, and step (3) film thickness is 25～45 μ m.
Preferably, step (3) afterwards, also comprises that step (4) utilizes central coiling machine that film is separated with separate-type paper, batches rolling.
Chitin film of the present invention comprises flame retardant polyurethane resin, soluble chitin, flatting silica, helps stripping agent, flow agent.And by the content optimization to each feed composition, this chitin film has air permeable waterproof, fire protection flame retarding and has effect of fungus and mildew resistance, repairing, the harmful organic gas of absorption.
Embodiment
Further illustrate technical scheme of the present invention below by embodiment.
Following raw material is commercially available.
Embodiment 1: this routine chitin film comprises flame retardant polyurethane resin, and in the following component of the quality of flame retardant polyurethane resin:
This chitin film adopts following methods to make:
Under 50 DEG C of water bath with thermostatic control conditions, by flame retardant polyurethane resin, and in the quality of flame retardant polyurethane resin, 8% soluble chitin, 1.5% flatting silica, 0.5% help stripping agent, 1.5% flow agent, 0.5% catalyzer add in 40% solvent, under the stirrer of rotating speed 1200rpm stirs, fully mix, form glue.By glue according to 200g/m
2glue spread is coated in the separate-type paper of coating board.The separate-type paper that scribbles glue is placed in to 60～120 DEG C of baking ovens and passes through baking oven with the speed of 15m/min, and solvent evaporates, finally utilizes central coiling machine that film is separated with separate-type paper, batches rolling, obtains dry chitin film, and film thickness is 35 μ m.
Embodiment 2: this routine chitin film comprises flame retardant polyurethane resin, and in the following component of the quality of flame retardant polyurethane resin:
This chitin film adopts following methods to make:
Under 50 DEG C of water bath with thermostatic control conditions, by flame retardant polyurethane resin, and in the quality of flame retardant polyurethane resin, 10% soluble chitin, 1.5% flatting silica, 0.5% help stripping agent, 1.5% flow agent, 0.5% catalyzer add in 40% solvent, under the stirrer of rotating speed 1200rpm stirs, fully mix, form glue.By glue according to 200g/m
2glue spread is coated in the separate-type paper of coating board.The separate-type paper that scribbles glue is placed in to 60～120 DEG C of baking ovens and passes through baking oven with the speed of 15m/min, and solvent evaporates, finally utilizes central coiling machine that film is separated with separate-type paper, batches rolling, obtains dry chitin film, and film thickness is 32 μ m.
Embodiment 3: this routine chitin film comprises flame retardant polyurethane resin, and in the following component of the quality of flame retardant polyurethane resin:
This chitin film adopts following methods to make:
Under 50 DEG C of water bath with thermostatic control conditions, by flame retardant polyurethane resin, and in the quality of flame retardant polyurethane resin, 12% soluble chitin, 1.5% flatting silica, 0.5% help stripping agent, 1.5% flow agent, 0.5% catalyzer add in 40% solvent, under the stirrer of rotating speed 1200rpm stirs, fully mix, form glue.By glue according to 200g/m
2glue spread is coated in the separate-type paper of coating board.The separate-type paper that scribbles glue is placed in to 60～120 DEG C of baking ovens and passes through baking oven with the speed of 15m/min, and solvent evaporates, finally utilizes central coiling machine that film is separated with separate-type paper, batches rolling, obtains dry chitin film, and film thickness is 37 μ m.
By the performance of experiment test chitin film of the present invention below.
According to ASTM D737 standard, ventilation property (taking vapor transfer rate as index) is tested.According to JISL1099B standard to water-repellancy (taking resistance to hydrostatic pressure as index).Carry out oxygen index test according to GB/T2408-1996 Plastics Combustion performance test method-Using Horizontal Bridgman Method and normal beam technique.
Test result is as following table:
As can be seen from the above table, chitin film prepared by the present invention is compared with common flame retardant polyurethane film, there is better ventilative, waterproof and flame retardant properties, in chitin film, added that N,O-CMC makes it also have fungus and mildew resistance, effect of deodorization, repairing, the harmful organic gas of adsorption-decomposition function simultaneously.
Should be noted that and understand, in the case of not departing from the spirit and scope of accompanying claim the present invention for required protection, can make various amendments and improvement to the present invention of foregoing detailed description.Therefore, the scope of claimed technical scheme is not subject to the restriction of given any specific exemplary teachings.
Applicant's statement, the present invention illustrates detailed process equipment and process flow process of the present invention by above-described embodiment, but the present invention is not limited to above-mentioned detailed process equipment and process flow process, do not mean that the present invention must rely on above-mentioned detailed process equipment and process flow process and could implement.Person of ordinary skill in the field should understand, any improvement in the present invention, and the selections of the equivalence replacement to the each raw material of product of the present invention and the interpolation of ancillary component, concrete mode etc., within all dropping on protection scope of the present invention and open scope.
Claims (9)
1. a chitin film, it is characterized in that, comprise flame retardant polyurethane resin, and in the quality of flame retardant polyurethane resin, 8%～12% soluble chitin, 1～2% flatting silica, 0.4～0.6% help stripping agent, 1～2% flow agent, 25%～65% solvent.
2. chitin film according to claim 1, it is characterized in that, comprise flame retardant polyurethane resin, and in the quality of fire-retardant polyurethane resin, 10% soluble chitin, 1.5% flatting silica, 0.5% help stripping agent, 1.5% flow agent, 0.1～2% catalyzer, 40% solvent.
3. chitin film according to claim 1, it is characterized in that, described solvent is compositions a kind of in butanone, toluene, dimethyl formamide or at least two kinds, and described catalyzer is compositions a kind of in dibutyl tin laurate, stannous octoate, dibutyltin diacetate or at least 2 kinds.
4. chitin film according to claim 1, is characterized in that, described flatting silica is OK-412 flatting silica, and described flow agent is C
1～10alkyl-modified organopolysiloxane, described in help stripping agent be polyether-modified polydimethylsiloxane.
5. a method of preparing chitin film as claimed in claim 1, is characterized in that, comprises the following steps:
(1) by flame retardant polyurethane resin, and in the quality of flame retardant polyurethane resin, 8%～12% chitin, 1～2% flatting silica, 0.4～0.6% help stripping agent, 1～2% flow agent, 25～65% solvent are thoroughly mixed to form glue;
(2) by glue application on the base material of coating board;
(3) dry to coated substrate, solvent evaporates, obtains film.
6. the method for preparing chitin film according to claim 5, is characterized in that, described in step (1), mixing process for fully to stir with stirrer in 45～55 DEG C of water-baths.
7. the method for preparing chitin film according to claim 5, is characterized in that, the glue spread of the described coating of step (2) is 160～250g/m
2, described base material is separate-type paper.
8. the method for preparing chitin film according to claim 5, is characterized in that, the described drying process of step (3) is that coated substrate is passed through to 60～120 DEG C of baking ovens with the speed of 10～20m/min, and the described film thickness of step (3) is 25～45 μ m.
9. the method for preparing chitin film according to claim 5, is characterized in that, step (3) afterwards, also comprises that step (4) utilizes central coiling machine that film is separated with separate-type paper, batches rolling.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410156349.4A CN103923454A (en) | 2014-04-18 | 2014-04-18 | Chitin film and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410156349.4A CN103923454A (en) | 2014-04-18 | 2014-04-18 | Chitin film and preparation method thereof |
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| CN201410156349.4A Pending CN103923454A (en) | 2014-04-18 | 2014-04-18 | Chitin film and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278362A (en) * | 2014-10-20 | 2015-01-14 | 湖州市菱湖石淙永盛丝织厂 | Preparation method of flame-retardant fiber material |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068842A (en) * | 2004-12-10 | 2007-11-07 | 三井化学聚氨酯株式会社 | Aqueous polyurethane resin, method for producing aqueous polyurethane resin and film |
-
2014
- 2014-04-18 CN CN201410156349.4A patent/CN103923454A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101068842A (en) * | 2004-12-10 | 2007-11-07 | 三井化学聚氨酯株式会社 | Aqueous polyurethane resin, method for producing aqueous polyurethane resin and film |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104278362A (en) * | 2014-10-20 | 2015-01-14 | 湖州市菱湖石淙永盛丝织厂 | Preparation method of flame-retardant fiber material |
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