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고-밀도 폴리에틸렌

고-밀도 폴리에틸렌
고-밀도 폴리에틸렌 구조식 이미지
카스 번호:
9002-88-4
한글명:
고-밀도 폴리에틸렌
동의어(한글):
고-밀도폴리에틸렌;폴리에틸렌;폴리에틸렌(POLYETHYLENE)
상품명:
Polyethylene
동의어(영문):
CPE;fp4;ppe2;Cipe;AC-8;Dynh;FP 4;Grex;hdpe;Irax
CBNumber:
CB5128662
분자식:
C2H4
포뮬러 무게:
28.05316
MOL 파일:
9002-88-4.mol

고-밀도 폴리에틸렌 속성

녹는점
92 °C
끓는 점
48-110 °C(Press: 9 Torr)
밀도
0.962 g/mL at 25 °C
인화점
270 °C
저장 조건
?20°C
물리적 상태
powder
색상
White
Specific Gravity
0.95
수용성
Soluble in acetone and benzene. Insoluble in water.
Merck
14,7567
안정성
Stable, but breaks down slowly in uv light or sunlight. Incompatible with halogens, strong oxidizing agents, benzene, petroleum ether, aromatic and chlorinated hydrocarbons, lubricating oils.
NIST
Polyethylene(9002-88-4)
EPA
Ethene, homopolymer(9002-88-4)

안전

안전지침서 22-24/25
WGK 독일 3
RTECS 번호 TQ3325000
TSCA Yes
HS 번호 39041090
유해 물질 데이터 9002-88-4(Hazardous Substances Data)

고-밀도 폴리에틸렌 MSDS


Poly(ethylene)

고-밀도 폴리에틸렌 C화학적 특성, 용도, 생산

개요

폴리에틸렌(영어: polyethylene)은 열가소성 플라스틱의 하나로 가볍고 유연하며, 왁스와 같은 느낌이 난다.

용도

공업 재료부터 일용 잡화까지, 생활의 구석구석에서 사용되고 있는 범용 플라스틱으로, 병·포장재·전기절연체로 많이 사용된다. 석유화학공업의 인기품으로, 범용 플라스틱의 대표적인 존재로 각광을 받게 되었다.

화학적 성질

solid; appearance depends upon method of forming;

용도

Injection and blow molded toys, housewares and lids.

용도

Injection molded car seats, mower parts and pails.

용도

Hot melt coating for paper, additive in cast moldings, candles, oil-based inks and hot melt adhesives.

용도

Typical applications included specialty injection molded parts.

용도

Additive to unsaturated polyesters, epoxides and other polymers to impart the unique properties of UHMWPE. Used in industrial parts, coatings and wear surfaces at 10-40 wt. %.

용도

Injection molded, thin-walled containers and housewares.

용도

Film applications having good drawdown and toughness.

용도

Mold release additive, lubricant in rubber processing, extrusion and calendering aid for PVC and dispersing aid for color concentrates.

용도

Bearings, gears, bushings and other moving parts.

용도

Laboratory tubing; in making prostheses; electrical insulation; packaging materials; kitchenware; tank and pipe linings; paper coatings; textile stiffeners.

용도

polyethylene is used to regulate viscosity, suspension properties, and general stability in cosmetic formulations. It is derived from petroleum gas or dehydration of alcohol.

용도

Polyethylene (PE) is a thermoplastic polymer consisting of long hydrocarbon chains. PE is used in a number of applications including flexible film packaging produced by the blown film process. Polyethylene is used to regulate viscosity, suspension properties, and general stability in cosmetic formulations.

정의

polyethylene: A flexible waxy translucentpolyalkene thermoplastic made in avariety of ways producing a polymerof varying characteristics. In the ICIprocess, ethene containing a trace of oxygen is subjected to a pressure inexcess of 1500 atmospheres and atemperature of 200°C. Low-densitypolyethene (r.d. 0.92) has a formulaweight between 50 000 and 300 000,softening at a temperature around110°C, while the high-density polythene(r.d. 0.945–0.96) has a formulaweight up to 3 000 000, softeningaround 130°C. The low-density polymeris less crystalline, being more atactic.Polyethene is used as aninsulator; it is acid resistant and iseasily moulded and blown.

정의

ChEBI: A polymer composed of ethane units.

농업용

LDPE is short for low density polyethylene. LDPE sheets are used for lining jute bags in which fertilizers are stored. LDPE acts as a waterproofing material.

공업 용도

Rigidity and tensile strength of the HDPE resins are considerably higher than those properties in the low- and medium-density materials. Impact strength is slightly lower, as is to be expected in a stiffer material, but values are high, especially at low temperatures, compared with those of many other thermoplastics.
HDPE resins are available with broad, intermediate, and narrow molecular-weight distribution, which provides a selection to meet specific performance requirements. As with the other polyethylene grades, very-high-molecular- weight copolymers of HDPE resins are available with improved resistance to stress cracking.
Applications of HDPE range from film products to large, blow-molded industrial containers. The largest market area is in blowmolded containers for packaging milk, fruit juices, water, detergents, and household and industrial liquid products. Other major uses include high-quality, injection-molded housewares, industrial pails, food containers, and tote boxes; extruded water and gas-distribution pipe, and wire insulation; and structural-foam housings.
HDPE resins are also used to rotationally mold large, complex-shaped products such as fuel tanks, trash containers, dump carts, pallets, agricultural tanks, highway barriers, and water and waste tanks for recreational vehicles.

공업 용도

LDPE, the first of the polyethylenes to be developed, has good toughness, flexibility, low-temperature impact resistance, clarity in film form, and relatively low heat resistance. Like the higher-density grades, LDPE has good resistance to chemical attack.
One of the fastest-growing plastics is linear LLDPE, used mainly in film applications but also suitable for injection, rotational, and blow molding. Properties of LLDPE are different from those of conventional LDPE and HDPE in that impact, tear, and heat-seal strengths and environmental stress-crack resistance of LLDPE are significantly higher. Major uses at present are grocery bags, industrial trash bags, liners, and heavy-duty shipping bags for such products as plastic resin pellets.

공업 용도

Polyethylene thermoplastic resins include lowdensity polyethylenes (LDPE), linear low-density polyethylenes (LLDPE), high-density polyethylenes (HDPE), and ethylene copolymers, such as ethylene-vinyl acetate (EVA) and ethylene- ethyl acrylate (EEA), and ultrahighmolecular- weight polyethylenes (UHMWPE). The basic properties of polyethylenes can be modified with a broad range of fillers, reinforcements, and chemical modifiers, such as thermal stabilizers, colorants, flame retardants, and blowing agents. Major application areas for polyethylenes are packaging, industrial containers, automotive, materials handling, consumer products, medical products, wire and cable insulation, furniture, housewares, toys, and novelties.
Polyethylene is a water-repellent, white, tough, leathery, thermoplastic resin very similar in appearance to paraffin wax. Properties vary from a viscous liquid at low molecular weights to a hard waxlike substance at high molecular weights. It is used as a coating for glass bottles and fiberglass fabrics (special treatments for glass are required to obtain good adhesion between polyethylene and glass) and is also used as an injection-molding material for ceramics.
TIn the polymerization process, the double bond connecting the carbon atoms is broken. Under the right conditions, these bonds reform with other ethylene molecules to form long molecular chains. Ethylene copolymers, EVA, and EEA are made by the polymerization of ethylene units with randomly distributed comonomer groups, such as vinyl acetate (VA) and ethyl acrylate (EA).

Safety Profile

Questionable carcinogen with experimental tumorigenic data by implant. Reacts violently with F2. When heated to decomposition it emits acrid smoke and irritating fumes.

Purification Methods

Crystallise it from thiophen-free *benzene and dry it over P2O5 under vacuum.

고-밀도 폴리에틸렌 준비 용품 및 원자재

원자재

준비 용품


고-밀도 폴리에틸렌 공급 업체

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