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불화 폴리비닐리덴

불화 폴리비닐리덴
불화 폴리비닐리덴 구조식 이미지
카스 번호:
24937-79-9
한글명:
불화 폴리비닐리덴
동의어(한글):
불화폴리비닐리덴;폴리불화비닐리덴;불화폴리비닐리덴(POLYVINYLIDENEFLUORIDE);폴리비닐리덴다이플루오라이드
상품명:
Polyvinylidene fluoride
동의어(영문):
PVF2;PVDF;MW~180000;MW~534000;MW~530000;PVDF/PVF2;P(VDF-co-TrFE);Polyvinylidene fluor;poly(vinylene fluoride);POLY(VINYLIDENE FLUORIDE)
CBNumber:
CB6313270
분자식:
C2H2F2
포뮬러 무게:
64.0340864
MOL 파일:
24937-79-9.mol

불화 폴리비닐리덴 속성

녹는점
166-170°C
밀도
1.78 g/mL at 25 °C
증기압
15 mm Hg ( 32 °C)
굴절률
n20/D 1.42
저장 조건
Sealed in dry,Room Temperature
용해도
some polar solvents such as organic esters and amines: soluble
물리적 상태
powder
색상
White
수용성
Soluble in organic esters, dimethylacetamide and amines. Insoluble in water.
안정성
Stable. Incompatible with strong oxidizing agents, silica.
EPA
Ethene, 1,1-difluoro-, homopolymer (24937-79-9)

안전

위험품 표기 C,T
안전지침서 22-24/25
WGK 독일 3
TSCA Yes
유해 물질 데이터 24937-79-9(Hazardous Substances Data)
기존화학 물질 KE-10546

불화 폴리비닐리덴 C화학적 특성, 용도, 생산

화학적 성질

Polyvinylidene fluoride (PVDF) is one of the most rigid and abrasion resistant of the melt-processible fluoropolymers. It has good chemical resistance, though hot sulfuric acid and hot amines can attack it. Like most fluoropolymers, PVDF is inherently flame retardant. It retains useful mechanical properties until 300 degrees F (149 degrees C).

용도

Poly(vinylidene fluoride) is resistant to most acids and alkalies but it is attacked by fuming sulfuric acid. It is soluble in dimethylacetamide but is insoluble in less polar solvents. Copolymers have been produced with ethylene, tetrafluoroethylene, chlorotrifluoroethylene and hexafluoroethylene. The latter is an elastomer called Viton or Fluorel.
The homopolymer is used as a chemical resistant coating for steel, for tank linings, hose, and pump impellors. The elastomeric copolymer with hexafluoroethylene when cured with hexamethylenediamine is used as a seal, gasket, 0-ring, tubing, coating and lining.

용도

Coatings, film, filter cloth, instrument linings, filtration membranes, pump parts and linings and valves.

정의

ChEBI: A polymer composed of repeating 1,1-difluoroethyl units.

생산 방법

PVDF, the addition polymer of 1,1,difluoroethene, is prepared by high-pressure free-radical polymerization in aqueous systems. It has applications in electric and electronic devices, as weather-resistant binders for exterior architectural finishes, and in a number of areas of the chemicalprocessing industry. The lack of additives and thus the exceedingly low contamination levels make the polymer useful in ultrapure water systems, for example, where high purity is necessary for construction materials.

생산 방법

This product is made by the free-radical chain polymerization of vinylidene fluoride (H2C=F2). This odorless gas which has a boiling point of ?82 °C is produced by the thermal dehydrochlorination of 1,1,1-chlorodifluoroethane or by the dechlorination of 1,2-dichloro-1,1-difluoro-ethane.

공업 용도

The fluorohydrocarbons are of two kinds: polyvinylidenefluoride (PVF2) and polyvinyl fluoride(PVF). Although similar to the other fluoroplastics,they have somewhat lower heatresistance and considerably higher tensile andcompressive strength.
PVF2, the toughest of the fluoroplastic resins,is available as pellets for extrusion andmolding and as powders and dispersions forcorrosion-resistant coatings. This high-molecular-weight homopolymer has excellent resistanceto stress fatigue, abrasion, and to coldflow. Although insulating properties and chemicalinertness of PVDF are not as good as thoseof the fully fluorinated polymers, PTFE andFEP, the balance of properties available inPVDF qualifies this resin for many engineeringapplications. It can be used over the temperaturerange from –73 to 149°C and has excellentresistance to abrasion.

공업 용도

The properties are generally similar to those ofthe other fluorinated resins: relative inertness,low dielectric constant, and thermal stability(up to about 150°C). The resins (PVF2 resins)are, however, stronger and less susceptible tocreep and abrasion than TFE and CTFE resins.
Applications of polyvinylidene fluoride aremainly as electrical insulation, piping, processequipment, and as a protective coating in theform of a liquid dispersion.

공업 용도

PVDF can be used with halogens, acids, bases, and strong oxidizing agents, but it is not recommended for use in contact with ketones, esters, amines, and some organic acids.
Although electrical properties of PVDF are not as good as those of other fluoroplastics, it is widely used to insulate wire and cable in computer and other electrical and electronic equipment. Heat-shrinkable tubing of PVDF is used as a protective cover on resistors and diodes, as an encapsulant over soldered joints.
Valves, piping, and other solid and lined components are typical applications of PVDF in chemical-processing equipment. It is the only fluoroplastic available in rigid pipe form.
Woven cloth made from PVDF monofilament is used for chemical filtration applications. A significant application area for PVDF materials is as a protective coating for metal panels used in outdoor service.
A recently developed capability of PVDF film is based on the unique piezoelectric characteristics of the film in its so-called beta phase.
When compressed or stretched, polarized PVDF generates a voltage from one metallized surface to the other, proportional to the induced strain.

불화 폴리비닐리덴 준비 용품 및 원자재

원자재

준비 용품


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