불화 폴리비닐리덴

한글명:불화 폴리비닐리덴

카스 번호24937-79-9

상품명:Polyvinylidene fluoride

CBNumberCB6313270

분자식C2H2F2

포뮬러 무게64.0340864

MOL 파일24937-79-9.mol

동의어(한글)

불화폴리비닐리덴

폴리불화비닐리덴

불화폴리비닐리덴(POLYVINYLIDENEFLUORIDE)

화학적 성질

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	유기 에스테르 및 아민과 같은 일부 극성 용매: 가용성
물리적 상태	가루
색상	하얀색
수용성	유기 에스테르, 디메틸아세트아미드 및 아민에 용해됩니다. 물에 불용성.
안정성	안정적인. 강한 산화제인 실리카와 혼합할 수 없습니다.
EPA	Ethene, 1,1-difluoro-, homopolymer (24937-79-9)

위험 및 안전 성명

위험품 표기

C,T

안전지침서

22-24/25

WGK 독일

TSCA

Yes

HS 번호

3904698081

유해 물질 데이터

24937-79-9(Hazardous Substances Data)

NFPA 704:

	1
0		0

그림문자(GHS)

불화 폴리비닐리덴 화학적 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
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.
일반 설명
Poly(vinylidene fluoride) PVDF is a semi crystalline non-centrosymmetric polymer which exhibits piezo-, pyro- and ferroelectric properties. It is a linear polymer that shows permanent electric dipoles perpendicular to the direction of the molecular chain. These dipoles result from the difference in electronegativity between the atoms of hydrogen and fluorine with respect to carbon. Depending on the processing conditions, PVDF exhibits several different crystalline phases (α,β,γ,δ). The β phase of PVDF is the phase that exhibits the best ferroelectric and piezoelectric properties.
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.

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