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Add：Jiangyin Xuxiake Huangtang Industrial Park
Tel：0510-86800370 86150525
Fax：0510-86150525
Web：ia48mm.cn |
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| ?POLYVINYLPYRROLIDONE |
6.Application in printing and dyeing industry
Due to the lactam structure in PVP, and hydroxyl groups, between the amino and the carboxyl group is a strong binding force, dyes tend to contain these functional groups, PVP and usually has a very strong affinity with organic dyes, sometimes the combination of fiber and dye affinity even force, hence PVP "liquid fiber," said. Using PVP of this a nature can increased some soothing water fiber and dye between of affinity, turn improve this class fiber of can dye sexual, such as, in synthetic process will be moderation PVP mixed with into which, makes synthetic can uniform to dyeing, and improve coloring force and improve dyeing depth, on dyeing comparison difficulties of polypropylene fiber, in which mixed with into 7.5% around of NVP/styrene copolymer real, can makes fiber on acid dye of dyeing depth increased 10 times times around, on dispersion dye can increased 5 times times around. Mixed PVP in the process, makes it uniformly distributed over fiber, can greatly reduce the chromatic aberration of the dyed fabric after, improve the adhesion of the dye on the fabric. Get uniform color, light heat-resistant textile dyeing products not easily fade.
PVP except can improve some fiber of can dye sexual outside, also can improved its moisture sexual, and anti-Sun sexual, performance, greatly improve synthetic of quality and grade, such as synthetic in the of polyamide fiber, and polyester fiber, to high strength, and high fine of, and resistance friction sexual, and hot plasticity and the good of gloss and sharp of dyeing and was welcomes, but moisture sexual is than natural fiber difference, led to its as clothing using often in clothing of surface attached a layer from air in the of steam and effect wearing of comfortable sense, Especially in the summer when high temperatures and humid weather, poor absorption of clothing can easily be sweating or high humidity of the air and keep the skin wet through, or even have a stimulus to the skin. Solution this a problem of method one is in spinning Qian dissolved thaw polyamide in the joined 4%~8% of PVP, and in low oxygen environment in the for melting spinning, joined of PVPK value in 30~70 Zhijian, which residues monomer content needs is less than 0.1%, so are of polyamide fiber-in polyester fiber, synthetic has high moisture sexual, and resistance washing sexual, and hot plasticity, and as Qian by in, PVP of joined also can improve some dyeing performance, control spinning speed can are different fine of of fiber. It is worth mentioning that, if joining PVPK values of less than 30, because of the low-molecular-weight weak PVP and polyamide complex, there will be some in the water treatment process in PVP dissolved in water and is not high-hygroscopic fibers. The other hand, if combined with molecular weight greater than 70 PVP, refining and melting when system viscosity increases, difficulties making spinning spin silk, influencing the efficiency of production, and the molecular weight of PVP is too great, fiber derived from hardness is too big, does not meet the requirements of synthetic fibers, soft and comfortable. PVP-K60 improved polyester fiber moisture absorption rate of up to a maximum weight of the fiber itself 20%
7.Application in materials
In the application of membrane separation is carried out this year to a very important means of separation, such as brominated polyphenylene oxide film (BPPO) membranes by means of performance is the key factor in the success. BPPO is a physical, and chemical performance stability of thermoplastic polymer, into film performance is excellent, in gas separation area has show has good of application prospects, but in actual application in the good some does not ideal, as due to BPPO film polar weaker, on alcohol/are e n-of separation efficiency enough ideal, used polar strong of PVP and BPPO total mixed to improve film material of polar, by regulation PVP/BPPO of ratio, makes film has appropriate of pass volume and selective, research indicates that, PVP content for 10% Total mixed membrane properties are obvious, for 6.4% of methanol solution, in flux by 30 degrees to 1.775g/m2. h and increase selectivity to 88%.
Film separation method sewage processing and the water processing technology has became today this a industry of mainstream technology, which is satisfied that filter, and or Super filter with PVDF film is film industrial in the of important part, its into film to hole agent K30 of using volume currently has has 3000MT/a of consumption, as world water resources of scarce degree of increasingly increased, and water of recovery using of economic value increasingly highlights, and and all main national on environment governance of strengthening, 3-5 PVPK30 in water treatment of environmental protection industry in the future using the possibility of meeting or exceeding 10,000 tons of very large.
PVP for glass, plastic and metal have a good sticky relay, is the main component of manufacturing special-purpose hot melt, use it as a glass, plastic, adhesive, strong adhesive, adhesive strength, glass fiber-reinforced composite material, hot melt adhesives containing PVP can be better bonding of glass fiber and other plastics.
In addition, PVP in conductive materials, various membrane functions have important uses in materials, in drag-reducing materials, fibre optics, laser disk, optical field of solid materials such as resin, photosensitive materials are applied.
九、QUALITY SPECIFICATION OF PHAR. GRADE (CP2005,USP26,EP4.0)
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NAME
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K-VALUE
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Vinylpyrrolidone
%
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Water
%
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Residue on ignition
%
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pH
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Nitrogen Conten
%
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Aldehydes
%
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Lead
%
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Hydrazine
PPM
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Peroxide
PPM
|
|
K15
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12.8~17.2
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≤0.2
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≤5.0
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≤0.1
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3.0~7.0
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11.5~12.8
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≤0.05
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≤0.001
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≤1
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≤400
|
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k30
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27.0~32.4
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≤0.2
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≤5.0
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≤0.1
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3.0~7.0
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11.5~12.8
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≤0.05
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≤0.001
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≤1
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≤400
|
|
k90
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81.0~97.2
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≤0.2
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≤5.0
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≤0.1
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3.0~7.0
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11.5~12.8
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≤0.05
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≤0.001
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≤1
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≤400
|
十、Application of Phar. Grade PVP： Povidone has broad application in pharmaceutical field, as an international advocate for one of the three new accessories for medicinal. Most widely used is tablets, granules of adhesives. It can also be used as a capsule of flow aid, to agent and lubricant eye drops, injections help solvent, liquid preparations distributed agents, enzymes and stabilizer for heat-sensitive medicines. Povidone-iodine and synthesis of povidone-iodine (PvP-I) disinfection and bactericide. Contact lenses, PVP as an element of contact lenses, can increase its hydrophilicity. PVP in medicine can also be used as a preservation agent. |
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