폴리프로필렌

폴리프로필렌 속성

폴리프로필렌 MSDS

Polypropylene

폴리프로필렌 C화학적 특성, 용도, 생산

용도

폴리프로필렌은 폴리에틸렌분자 사슬의 탄소에 하나씩 걸러 메틸기(CH3)가 붙은 것이며, 규칙적으로 짧은 가지가 달린 형태를 하고 있다. 폴리프로필렌 필름은 폴리에틸렌 필름보다 투명도가 높고 약간 경질이다.또 성형용으로도 많이 사용되며 병 용기 등이 만들어진다.

준비

폴리프로필렌(polypropylene)은 폴리에틸렌과 같이 석유에서 얻어진 프로필렌을 치글러-나타 촉매로 중합시킨 것으로, 저압법 폴리에틸렌과 같은 방법으로 만들어진다.

화학적 성질

Polypropylene is a low-density resin that offers a good balance of thermal, chemical, and electrical properties, along with moderate strength. Strength can be significantly increased by using reinforcing agents such as glass fiber. Polypropylene has limited heat resistance, but it can be used in applications that must withstand boiling water or steam sterilization.
Polypropylenes can resist chemical attack and are unaffected by aqueous solutions of inorganic salts or mineral acids and bases, even at high temperatures. They are not attacked by most organic chemicals, and there is no solvent for these resins at room temperature. The resins are attacked, however, by halogens, fuming nitric acid, other active oxidizing agents, and by aromatic and chlorinated hydrocarbons at high temperatures .
Polypropylene is translucent and autoclavable. Properties can be improved by compounding with fillers, by blending with synthetic elastomers, and by copolymerizing with small amounts of other monomers.

용도

Modifier for waxes to reduce blocking, scuffing and abrasion. Improves pigment dispersion in polypropylene films and fibers.

정의

polypropylene: Anisotactic polymer existing in bothlow and high formula-weight forms.The lower-formula-weight polymer ismade by passing propene at moderatepressure over a heated phosphoricacid catalyst spread on aninert material at 200°C. The reactionyields the trimer and tetramer. Thehigher-formula-weight polymer isproduced by passing propene into aninert solvent, heptane, which containsa trialkyl aluminium and a titaniumcompound. The product is amixture of isotactic and atacticpolypropene, the former being themajor constituent. Polypropene isused as a thermoplastic mouldingmaterial.

생산 방법

In PP production, propylene monomer is polymerized to make the homopolymer by using a Ziegler–Natta type coordination catalyst. This catalyst results from the reaction and interaction of a transition metal compound and an organometallic compound, usually an alkylaluminum compound. Halide atoms are involved in most such catalyst systems .
Polypropylene can be made by solution, slurry (or solvent), bulk (or liquid propylene), or gas-phase polymerization, or a combination of these processes . The most widely used is the slurry process; however, the current trend is toward the gas-phase process. In the solution, slurry, and bulk processes, the catalyst system is mixed with propylene and a hydrocarbon diluent (usually hexane, heptane, or liquid propylene) in a reactor. After polymerization, the reaction mixture enters a flash tank where unreacted propylene is removed and recycled. Propylene–ethylene copolymers [9010-79-1] can be manufactured when ethylene is fed along with propylene to the polymerization reactor or by adding ethylene and propylene to a postpolymerization reactor that contains PP. This mixture may then be purified to remove lowmolecular weight and atactic fractions and washed to remove catalyst residues. The polypropylene resin is then dried and pelletized. During this time, additivesmay be incorporated in the gas-phase process; no liquid diluent is used .

일반 설명

Tan to white odorless solid. Less dense than water and insoluble in water. Hence floats on water.

공기와 물의 반응

Insoluble in water.

반응 프로필

Polypropylene reacts with chlorine, fuming nitric acid and other strong oxidizing agents.

위험도

Questionable carcinogen.

건강위험

No apparent toxicity

공업 용도

Polypropylene is similar in structure to polyethylene,but every other carbon atom has oneof its H2 atoms replaced by a CH2group.Although electrically similar to polyethylene,polypropylene can be made in thinner films, say 5μm as against about 25 μm for polyethylene.These films replace paper for impregnatedcapacitors, with reduced loss.

Safety Profile

Moderately toxic by ingestion and intraperitoneal routes. Questionable carcinogen. When heated to decomposition it emits acrid smoke and irritating fumes. Used in injection molding for auto parts, in bottle caps, and in container closures.

Carcinogenicity

No data on the carcinogenicity and mutagenicity of propylene are available for evaluation by the working group.

폴리프로필렌 준비 용품 및 원자재

원자재

준비 용품

폴리프로필렌 공급 업체

공급자	전화	이메일	국가	제품 수	이점
Dongguan Zhenge New Material Technology Co., Ltd.	13650015200 13650015200	184807813@qq.com	China	25	58
Alfa Aesar	400-6106006	saleschina@alfa-asia.com	China	30103	84
Beijing HwrkChemical Technology Co., Ltd	89508211 18501085097	sales.bj@hwrkchemical.com	China	9409	55
Winchem Industrial Co. Ltd	0574-83851061	info@win-chemical.com	China	500	55
Tianjin heowns Biochemical Technology Co., Ltd.	400 638 7771	sales@heowns.com	China	14412	57
Sinopharm Chemical Reagent Co,Ltd.	86-21-63210123	sj_scrc@sinopharm.com	China	9791	79
ShangHai YuanYe Biotechnology Co., Ltd.	15026964105	shyysw007@163.com	China	4993	60
Beijing HuaMeiHuLiBiological Chemical	010-56205725	waley188@sohu.com	China	12323	58
9ding chemical ( Shanghai) Limited	4009209199	sales@9dingchem.com	China	22497	55
Shanghai Aladdin Bio-Chem Technology Co.,LTD	400-6206333 13167063860	anhua.mao@aladdin-e.com	China	29977	65

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