CN1267495C - Water-soluble nano composite plastic film and its preparation method - Google Patents
Water-soluble nano composite plastic film and its preparation method Download PDFInfo
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- CN1267495C CN1267495C CN 200410000763 CN200410000763A CN1267495C CN 1267495 C CN1267495 C CN 1267495C CN 200410000763 CN200410000763 CN 200410000763 CN 200410000763 A CN200410000763 A CN 200410000763A CN 1267495 C CN1267495 C CN 1267495C
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- polyvinyl alcohol
- plastic film
- montmorillonite
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Abstract
The present invention relates to a water-soluble nanometer composite plastic film and a preparation method thereof. The plastic film comprises raw materials of the following portions by weight: 100 portions by weight of polyvinyl alcohol, 1 to 7 portions by weight of nickel base montmorillonite, 0.2 to 2 portions by weight of defoaming agent, 0.2 to 2 portions by weight of flatting agent, 1000 to 3000 portions by weight of water and a little plasticizing agent, wherein the polymerization degree of the polyvinyl alcohol is from 2400 to 2500. The plastic film has the following preparation method: the nickel base montmorillonite, the polyvinyl alcohol and the water are mixed according to a proportion to react under the condition of the temperature of 80 DEG C to 95 DEG C until hydroxyl groups in the polyvinyl alcohol and Ni<2+> ions in the nickel base montmorillonite are completely compounded; after reaction is cooled to room temperature, the defoaming agent and the flatting agent are added, and a little plasticizing agent such as sorbitol, glycerol, and the like can also be added; the plastic film is prepared after homogenization. The plastic film has the advantages of high tensile strength, good water solubility, and stability when the plastic film is in a solid state. Once the plastic film is dissolved, the plastic film can be biodegraded. The price of raw materials is low, and the preparation method is simple.
Description
Technical field
The present invention relates to a kind of water-soluble nano composite plastic film and preparation method thereof.
Background technology
Along with the widespread use of plastics in human daily life, the consequent is that plastic refuse is also more and more, because most of plastic refuse is difficult to natural degradation, thereby has caused a large amount of nonvolatil rubbish to the earth, for environment has brought serious white pollution problems.Along with the development and progress of society, human more and more note our environment of depending on for existence of protection, therefore, be that the water-soluble pollution-free green environmentally-friendly plastic of raw material becomes the object that countries in the world fall over each other to study with the polyvinyl alcohol.WO03060007 has reported the heat insulation water-solubility membrane that carboxylic polyvinyl alcohol resin forms; JP2002037967 and JP2002020507 have reported a kind of polyvinyl alcohol water-solubility membrane, contain polyvinyl alcohol, tensio-active agent and softening agent; JP2002020506 provides a kind of high impact properties polyvinyl alcohol water-solubility membrane that has; GB2090603 provides a kind of water-solubility membrane of being made up of polyvinyl alcohol and polyacrylic acid, is dissolved in cold water and the hot water transparent, easy processing, good mechanical property easily; EP0236011 and JP62275145 provide a kind of water-solubility membrane of being made up of polyvinyl alcohol and tetramethylolmethane; JP1029408 provides a kind of cold water and long-term stability of being soluble in, and the film of acid and alkali-resistance is by acetylizad polyvinyl alcohol preparation; JP53024351, US4119604 provide a kind of water soluble package film that is used for the automobile packaging facilities, are made up of polyvinyl alcohol, ethene unsaturated ester and polyoxyethylene glycol softening agent.University Of Suzhou's journal has been reported the method [University Of Suzhou's journal (natural science edition) 18 (2) 96-100] for preparing the water-quick-soluble PVA (PVOH) FILM with polyvinyl alcohol and acrylamide.The common drawback of the described plastics film of above-mentioned document is to possess the tensile strength height simultaneously, good water solubility, and characteristics such as cost of material is cheap, and preparation technology is simple.
Summary of the invention
The objective of the invention is to improve the shortcoming of prior art and provide a kind of tensile strength height, good water solubility, cheap, preparation technology is simple, and is and stable when solid-state, in case dissolving just can biodegradable water-soluble nano plastics.
Another object of the present invention is to provide a kind of preparation method of water-soluble nano plastics.
Purpose of the present invention can be achieved through the following technical solutions: described water-soluble nano plastics are made up of following materials based on weight:
Polyvinyl alcohol 100 ni montmorillonite 1-7
Defoamer 0.2-2 flow agent 0.2-2
Water 1000-3000 softening agent a little
The described polyvinyl alcohol polymerization degree is 2400-2500;
Described polyvinyl alcohol/ni montmorillonite water-soluble nano preparation method of composite film is as follows: ni montmorillonite, polyvinyl alcohol, water are mixed in proportion, react hydroxyl to the polyvinyl alcohol and the Ni in the polynite under 80 ℃-95 ℃ temperature condition
2+Till the complete complexing of ion, after question response is cooled to room temperature, add defoamer and flow agent again, also can add a little softening agent again,, stir evenly back system film as sorbyl alcohol, glycerine etc.Described defoamer is Byk028; Described flow agent is Byk346;
Another preparation method of described polyvinyl alcohol/ni montmorillonite water-soluble nano laminated film is as follows: with ni montmorillonite be warming up to 80 ℃-95 ℃ while stirring after water mixes, add polyvinyl alcohol, under 80 ℃ of-95 ℃ of conditions, react hydroxyl to the polyvinyl alcohol and the Ni in the polynite
2+Till the complete complexing of ion, after question response is cooled to room temperature, add defoamer and flow agent again, also can add a little softening agent again,, stir evenly back system film as sorbyl alcohol, glycerine etc.
The third preparation method of described polyvinyl alcohol/ni montmorillonite water-soluble nano laminated film is as follows: polyvinyl alcohol be warming up to 80 ℃-95 ℃ while stirring after water mixes, add ni montmorillonite, under 80 ℃ of-95 ℃ of conditions, react hydroxyl to the polyvinyl alcohol and the Ni in the polynite
2+Till the complete complexing of ion, after question response is cooled to room temperature, add defoamer and flow agent again, also can add a little softening agent again,, stir evenly back system film as sorbyl alcohol, glycerine etc.
The present invention compared with prior art has following advantage:
1, utilizes hydroxyl in the polyvinyl alcohol and the Ni in the polynite
2+Ion complexation forms high-molecule chelated thing, because the direct embedding of polyvinyl alcohol causes cheating engaging layer to be strutted, makes it to peel off in the polymeric matrix that the nanometer lamella is dispersed in external phase the polymer nanocomposites of formation.Therefore this film has high tensile strength, and is as shown in table 1.
The relation of table 1 ni montmorillonite content and film mechanical property:
| Ni montmorillonite content | Tensile strength (MPa) | Elongation at break (%) |
| 0％ | 94.990 | 11.370 |
| 1％ | 108.589 | 3.249 |
| 3％ | 114.438 | 2.166 |
| 5％ | 127.737 | 2.155 |
| 7％ | 114.007 | 2.708 |
2. the present invention has the good characteristics of solvability, within 5 minutes, more than 30 ℃ in the tap water of temperature
Can dissolve fully, can recycle, thereby reduce white pollution and the harm of environment, as shown in table 2.
Table 2 under certain thickness prerequisite, the relation of ni montmorillonite content and solvent temperature:
| Ni montmorillonite content | The temperature of tap water | Solvability | Film thickness |
| 0％ | More than 60 ℃ | Dissolving | 0.020mm |
| 1％ | More than 53 ℃ | Dissolving | 0.020mm |
| 3％ | More than 47 ℃ | Dissolving | 0.020mm |
| 5％ | More than 40 ℃ | Dissolving | 0.020mm |
| 7％ | More than 30 ℃ | Dissolving | 0.015mm |
3 the present invention are dissolved in diluted acid, but are insoluble to diluted alkaline and grease.
4 transparencies of the present invention are good.
5 production processes of the present invention adopt one kettle way, and preparation technology is simple.
6 raw materials of the present invention adopt cheap polynite, and cost is low.
Embodiment 1:
Described water-soluble nano plastics are made up of following materials based on weight:
Polyvinyl alcohol 100 ni montmorillonites 1
Defoamer 0.2 flow agent 0.2
Water 1500 softening agent a little
The described polyvinyl alcohol polymerization degree is 2400-2500;
Described polyvinyl alcohol/ni montmorillonite water-soluble nano preparation method of composite film is as follows: ni montmorillonite, polyvinyl alcohol, water are mixed according to the above ratio, react hydroxyl to the polyvinyl alcohol and the Ni in the polynite under 80 ℃ temperature condition
2+Till the complete complexing of ion, after question response is cooled to room temperature, add defoamer Byk028 again, flow agent Byk346 can add a little sorbyl alcohol again, stirs evenly back system film, promptly gets polyvinyl alcohol/ni montmorillonite water-soluble nano laminated film after the drying.
Embodiment 2:
Described water-soluble nano plastics are made up of following materials based on weight:
Polyvinyl alcohol 100 ni montmorillonites 7
Defoamer 2 flow agents 2
Water 3000 softening agent a little
The described polyvinyl alcohol polymerization degree is 2400-2500;
The preparation method of described polyvinyl alcohol/ni montmorillonite water-soluble nano laminated film is as follows: be warming up to 90 ℃ while stirring after ni montmorillonite and water are mixed in proportion, add polyvinyl alcohol, under 90 ℃ of conditions, react hydroxyl to the polyvinyl alcohol and the Ni in the polynite
2+Till the complete complexing of ion, after question response is cooled to room temperature, add defoamer and flow agent again, can add a little softening agent glycerine again, stir evenly back system film, promptly get polyvinyl alcohol/ni montmorillonite water-soluble nano laminated film after the drying.
Embodiment 3:
Described water-soluble nano plastics are made up of following materials based on weight:
Polyvinyl alcohol 100 ni montmorillonites 4
Defoamer 0.5 flow agent 0.5
Water 1000 softening agent a little
The described polyvinyl alcohol polymerization degree is 2400-2500;
Be warming up to 95 ℃ while stirring after polyvinyl alcohol and water is mixed in proportion, add ni montmorillonite, under 95 ℃ of conditions, react hydroxyl to the polyvinyl alcohol and the Ni in the polynite
2+Till the complete complexing of ion, after question response is cooled to room temperature, add defoamer and flow agent again, can add a little softening agent glycerine again, stir evenly back system film, promptly get polyvinyl alcohol/ni montmorillonite water-soluble nano laminated film after the drying.
Claims (7)
1, a kind of water-soluble nano composite plastic film is characterized in that: described water-soluble nano plastics film is made up of following materials based on weight:
Polyvinyl alcohol 100 ni montmorillonite 1-7
Defoamer 0.2-2 flow agent 0.2-2
Water 1000-3000
The described polyvinyl alcohol polymerization degree is 2400-2500.
2, a kind of water-soluble nano composite plastic film according to claim 1 is characterized in that: described water-soluble nano plastics film raw material also has a little softening agent sorbyl alcohol or glycerine.
3, a kind of water-soluble nano composite plastic film according to claim 1, it is characterized in that: described defoamer is Byk028.
4, a kind of water-soluble nano composite plastic film according to claim 1, it is characterized in that: described flow agent is Byk346.
5, the preparation method of a kind of polyvinyl alcohol as claimed in claim 1/ni montmorillonite water-soluble nano laminated film, it is characterized in that: ni montmorillonite, polyvinyl alcohol, water are mixed in proportion, under 80 ℃-95 ℃ temperature condition, react hydroxyl to the polyvinyl alcohol and the Ni in the polynite
2+Till the complete complexing of ion, after question response is cooled to room temperature, add defoamer and flow agent, can add a little softening agent again, stir evenly back system film.
6, the preparation method of a kind of polyvinyl alcohol as claimed in claim 1/ni montmorillonite water-soluble nano laminated film, it is characterized in that: with ni montmorillonite be warming up to 80 ℃-95 ℃ while stirring after water mixes, add polyvinyl alcohol, under 80 ℃ of-95 ℃ of conditions, react hydroxyl to the polyvinyl alcohol and the Ni in the polynite
2+Till the complete complexing of ion, after question response is cooled to room temperature, add defoamer and flow agent, can add a little softening agent again, stir evenly back system film.
7, the preparation method of a kind of polyvinyl alcohol as claimed in claim 1/ni montmorillonite water-soluble nano laminated film, it is characterized in that: polyvinyl alcohol be warming up to 80 ℃-95 ℃ while stirring after water mixes, add ni montmorillonite, under 80 ℃ of-95 ℃ of conditions, react hydroxyl to the polyvinyl alcohol and the Ni in the polynite
2+Till the complete complexing of ion, after question response is cooled to room temperature, add defoamer and flow agent, can add a little softening agent again, stir evenly back system film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410000763 CN1267495C (en) | 2004-01-18 | 2004-01-18 | Water-soluble nano composite plastic film and its preparation method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410000763 CN1267495C (en) | 2004-01-18 | 2004-01-18 | Water-soluble nano composite plastic film and its preparation method |
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| CN1557871A CN1557871A (en) | 2004-12-29 |
| CN1267495C true CN1267495C (en) | 2006-08-02 |
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| CN 200410000763 Expired - Fee Related CN1267495C (en) | 2004-01-18 | 2004-01-18 | Water-soluble nano composite plastic film and its preparation method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008539320A (en) * | 2005-04-28 | 2008-11-13 | モノソル エルエルシー | Water-soluble composition and structure, and method for producing and using the same |
| CN102898668B (en) * | 2012-10-13 | 2014-12-31 | 华南理工大学 | Water soluble preservative film for fruits and vegetables and preparation method of preservative film |
| CN104558993B (en) * | 2014-12-24 | 2017-11-14 | 武汉工程大学 | A kind of modified polyvinylalcohol film and preparation method thereof |
| CN110628154A (en) * | 2019-09-27 | 2019-12-31 | 淄博泰德环保科技有限公司 | Environment-friendly polyvinyl alcohol gloves and preparation method thereof |
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