CN101586259A - Method for preparing polyvinyl alcohol spin dope added with carbon nano-tube - Google Patents
Method for preparing polyvinyl alcohol spin dope added with carbon nano-tube Download PDFInfo
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- CN101586259A CN101586259A CNA2009100536499A CN200910053649A CN101586259A CN 101586259 A CN101586259 A CN 101586259A CN A2009100536499 A CNA2009100536499 A CN A2009100536499A CN 200910053649 A CN200910053649 A CN 200910053649A CN 101586259 A CN101586259 A CN 101586259A
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Abstract
The invention relates to a method for preparing polyvinyl alcohol spin dope added with carbon nano-tube, which includes the steps of (1) dissolving non-ionic surface active agent into deionized water, preparing non-ionic surface active agent aqueous solution at concentration of 0.01-20 wt%, and then mixing with carbon nano-tube for obtaining uniformly dispersed and stable carbon nano-tube pre-dispersed liquid; (2) dissolving polyvinyl alcohol into the carbon nano-tube pre-dispersed liquid according to the step (1), for obtaining polyvinyl alcohol spin dope containing carbon nano-tubes with solid content of 1-60 wt%. The preparation method provided by the invention has the advantages of simple technological operation, low cost, friendly environment, safety production, thereby realizing industrial production, preparing and obtaining uniformly dispersed and stable polyvinyl alcohol spin dope containing carbon nano-tubes.
Description
Technical field
The invention belongs to the preparation field of polyvinyl alcohol spin dope, particularly relate to a kind of preparation method who adds the polyvinyl alcohol spin dope of CNT.
Background technology
Polyvinyl alcohol (PVA) is a kind of purposes high molecular weight water soluble polymer quite widely, and performance is between plastics and rubber.The polyvinyl alcohol resin series of products are white solid, and that external form is divided is cotton-shaped, three kinds of graininess, powdery; Nonpoisonous and tasteless, pollution-free, can in 80～90 ℃ of water, dissolve.Its aqueous solution has good cementability and film forming; Most of organic solvents such as ability oils, lubricant and hydro carbons; Have chemical property such as long-chain polyhydric alcohol esterification, etherificate, acetalation.Be mainly used in textile industry warp size, fabric finishing agent, vinylon fiber raw material; Because PVA has unique powerful cementability, epithelium pliability, flatness, oil resistivity, solvent resistance, protecting colloid, gas barrier performance, ABRASION RESISTANCE and the resistance to water that has through special treatment; therefore except making fibrous raw material; also be used to produce products such as coating, adhesive, paper product processing agent, emulsifying agent, dispersant, film in a large number, range of application spreads all over industries such as weaving, food, medicine, building, Wood Processing, papermaking, printing, agricultural, iron and steel, macromolecule chemical industry.
Basic research laboratory Electronic Speculum expert IiJima checks C under high resolution transmission electron microscopy since Japanese NEC Corporation
60The unexpected carbon pipe of finding, its particular structure, performance and great application prospect have attracted the numerous scientists' in various countries interest, have worldwide started one CNT heat.CNT has special galvanomagnetic-effect, shows stronger wide band absorption performance, and has advantages such as proportion is little, high-temperature oxidation resistant, dielectric properties are adjustable, good stability.Because carbon atom is taked SP2 hydridization in the CNT, compares SP3 hydridization, the S orbital composition is bigger in the SP2 hydridization, makes CNT have high-modulus, high strength.Its particular structure is desirable one-dimensional model material; Huge draw ratio is expected to as tough and tensile carbon fiber it, and its intensity is 100 times of steel, and weight then has only 1/6 of steel; Its elastic modelling quantity can reach 1TPa, and is suitable with adamantine elastic modelling quantity, is about 5 times of steel.CNT is the material with high specific strength that can prepare at present.If will be that matrix and CNT are made composite with the Other Engineering material, can make composite show good intensity, elasticity, fatigue resistance and isotropism, bring great improvement to performance of composites.
As everyone knows, the specific area of nano particle own is big, and agglomeration easily takes place, and influences material property.Prepare the CNT/high polymer composite material of function admirable, improve the agglomeration of CNT, strengthen the active force between CNT and polymer matrix interface, make the even dispersion of CNT become problem demanding prompt solution.
Summary of the invention
Technical problem to be solved by this invention provides a kind of preparation method who adds the polyvinyl alcohol spin dope of CNT, and this preparation method's technological operation is simple, and cost is low, and is environmentally friendly, and production safety realizes suitability for industrialized production; Prepare be uniformly dispersed, the polyvinyl alcohol spin dope of the carbon nanotubes of stable in properties.
A kind of preparation method who adds the polyvinyl alcohol spin dope of CNT of the present invention comprises:
(1) non-ionic surface active agent is dissolved in deionized water, preparing concentration is the nonionic surfactant water-soluble liquid of 0.01～20wt%, mix in the ratio of every liter of solution 0.02g-10g CNT then, be uniformly dispersed, the CNT pre-dispersed liquid of stable in properties;
(2) polyvinyl alcohol is dissolved in step (1) CNT pre-dispersed liquid, obtains the polyvinyl alcohol spin dope that solid content is the carbon nanotubes of 1～60wt%.
The gained spinning solution is by the spinneret orifice spinning moulding of aperture 0.02～2mm.
Non-ionic surface active agent is selected from nonyl support polyoxyethylene ether, polyoxyethylene nonylphenol ether, octyl phenol polyoxy ethene (9-10) ether (Triton X-100), the C of HLB 34.5 in the described step (1)
6-20In aliphatic amine polyoxyethylene ether, polyalcohol polyoxyethylene polyoxypropylene ether, lauryl alcohol polyoxyethylene ether, octyl cresol polyoxyethylene ether, polyoxyethylene carboxylate, ethylene oxide adduct (Scurol C), polyvinyl alcohol, alkaryl polyglycol ether, ethylene glycol, glycerine, butanols, the polyoxyethylene one or more.
CNT in the described step (1) is Single Walled Carbon Nanotube, multi-walled carbon nano-tubes or directed multi-walled carbon nano-tubes, and external diameter is 2～100nm, length 2～30 μ m.
Polyvinyl alcohol molecular weight in the described step (2) is 80000-180000, and alcoholysis degree is 75-99.9%.
Add the polyvinyl alcohol spin dope of CNT in the described step (2), CNT accounts for the 0.001-10wt% of polyvinyl alcohol.
Beneficial effect
The non-ionic surface active agent that the present invention selects for use, even carbon nanotube is disperseed, prepare be uniformly dispersed, the polyvinyl alcohol spin dope of the carbon nanotubes of stable in properties, the polyvinyl alcohol spin dope preparation method technological operation of carbon nanotubes is simple among the present invention simultaneously, cost is low, environmentally friendly, production safety realizes suitability for industrialized production.
The specific embodiment
Below in conjunction with specific embodiment, further set forth the present invention.Should be understood that these embodiment only to be used to the present invention is described and be not used in and limit the scope of the invention.Should be understood that in addition those skilled in the art can make various changes or modifications the present invention after the content of having read the present invention's instruction, these equivalent form of values fall within the application's appended claims institute restricted portion equally.
Embodiment 1
Polyvinyl alcohol 5g, CNT 0.01g are added in the 500ml nonionic surfactant water-soluble liquid, contained the polyvinyl alcohol spin dope of nano particle uniformly.
Embodiment 2
Polyvinyl alcohol 200g, CNT 0.002g are added in the 500ml nonionic surfactant water-soluble liquid, contained the polyvinyl alcohol spin dope of nano particle uniformly.
Embodiment 3
Polyvinyl alcohol 50g, CNT 5g are added in the 500ml nonionic surfactant water-soluble liquid, contained the polyvinyl alcohol spin dope of nano particle uniformly.
Claims (6)
1. preparation method who adds the polyvinyl alcohol spin dope of CNT comprises:
(1) non-ionic surface active agent is dissolved in deionized water, preparing concentration is the nonionic surfactant water-soluble liquid of 0.01～20wt%, mix in the ratio of every liter of solution 0.02g-10g CNT then, be uniformly dispersed, the CNT pre-dispersed liquid of stable in properties;
(2) polyvinyl alcohol is dissolved in step (1) CNT pre-dispersed liquid, obtains the polyvinyl alcohol spin dope that solid content is the carbon nanotubes of 1～60wt%.
2. a kind of preparation method who adds the polyvinyl alcohol spin dope of CNT according to claim 1 is characterized in that: non-ionic surface active agent is selected from nonyl support polyoxyethylene ether, polyoxyethylene nonylphenol ether, octyl phenol polyoxy ethene (9-10) ether Triton X-100, the C of HLB 34.5 in the described step (1)
6-20In aliphatic amine polyoxyethylene ether, polyalcohol polyoxyethylene polyoxypropylene ether, lauryl alcohol polyoxyethylene ether, octyl cresol polyoxyethylene ether, polyoxyethylene carboxylate, ethylene oxide adduct Scurol C, polyvinyl alcohol, alkaryl polyglycol ether, ethylene glycol, glycerine, butanols, the polyoxyethylene one or more.
3. a kind of preparation method who adds the polyvinyl alcohol spin dope of CNT according to claim 1, it is characterized in that: the CNT in the described step (1) is Single Walled Carbon Nanotube, multi-walled carbon nano-tubes or directed multi-walled carbon nano-tubes, external diameter is 2～100nm, length 2～30 μ m.
4. a kind of preparation method who adds the polyvinyl alcohol spin dope of CNT according to claim 1 is characterized in that: the polyvinyl alcohol molecular weight in the described step (2) is 80000-180000, and alcoholysis degree is 75-99.9%.
5. a kind of preparation method who adds the polyvinyl alcohol spin dope of CNT according to claim 1 is characterized in that: add the polyvinyl alcohol spin dope of CNT in the described step (2), CNT accounts for the 0.001-10wt% of polyvinyl alcohol.
6. a kind of preparation method who adds the polyvinyl alcohol spin dope of CNT according to claim 1 is characterized in that: the spinning solution that described step (2) makes is by the spinneret orifice spinning moulding of aperture 0.02～2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100536499A CN101586259B (en) | 2009-06-23 | 2009-06-23 | Method for preparing polyvinyl alcohol spin dope added with carbon nano-tube |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009100536499A CN101586259B (en) | 2009-06-23 | 2009-06-23 | Method for preparing polyvinyl alcohol spin dope added with carbon nano-tube |
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| CN101586259A true CN101586259A (en) | 2009-11-25 |
| CN101586259B CN101586259B (en) | 2011-06-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435948A (en) * | 2013-08-28 | 2013-12-11 | 江苏博特新材料有限公司 | Meltable reinforced polyvinyl alcohol (PVA) composite and preparation method thereof |
| CN106245138A (en) * | 2016-07-27 | 2016-12-21 | 南京工程学院 | A kind of preparation method of high recovery stress shape memory complex fiber material |
| CN113713629A (en) * | 2021-04-19 | 2021-11-30 | 保定源汉升新材料科技有限公司 | Efficient particulate matter adsorption material and preparation method and purification mode thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1569939A (en) * | 2004-04-26 | 2005-01-26 | 东华大学 | Carbon nanotube electrically conductive fibre and method for making same |
| CN100551965C (en) * | 2006-06-30 | 2009-10-21 | 浙江大学 | A kind of carbon nano tube reinforced polyvinyl alcohol composite material and preparation method thereof |
-
2009
- 2009-06-23 CN CN2009100536499A patent/CN101586259B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103435948A (en) * | 2013-08-28 | 2013-12-11 | 江苏博特新材料有限公司 | Meltable reinforced polyvinyl alcohol (PVA) composite and preparation method thereof |
| CN103435948B (en) * | 2013-08-28 | 2016-02-03 | 江苏苏博特新材料股份有限公司 | Enhanced polyethylene alcohol mixture of a kind of melt-processable and preparation method thereof |
| CN106245138A (en) * | 2016-07-27 | 2016-12-21 | 南京工程学院 | A kind of preparation method of high recovery stress shape memory complex fiber material |
| CN106245138B (en) * | 2016-07-27 | 2019-01-22 | 南京工程学院 | A kind of preparation method of high recovery stress shape memory complex fiber material |
| CN113713629A (en) * | 2021-04-19 | 2021-11-30 | 保定源汉升新材料科技有限公司 | Efficient particulate matter adsorption material and preparation method and purification mode thereof |
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| CN101586259B (en) | 2011-06-22 |
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