Crastin® CE2255 BK580 | PBT THERMOPLASTIC POLYESTER RESIN

 

Regional Availability

North America, Europe, Asia Pacific, South and Central America, Near East/Africa, Global

 

Processing

Injection Moulding

 

Delivery form

Pellets

 

Product Text

Common features of Crastin® thermoplastic polyester resin include mechanical and physical properties such as stiffness and toughness, heat resistance, friction and wear resistance, excellent surface finishes and good colourability. Crastin® thermoplastic polyester resin has excellent electrical insulation characteristics and high arc-resistant grades are available. Many flame retardant grades have UL recognition (class V-0). Crastin® thermoplastic polyester resin typically has high chemical and heat ageing resistance.

 

The good melt stability of Crastin® thermoplastic polyester resin normally enables the recycling of properly handled production waste.

If recycling is not possible, DuPont recommends, as the preferred option, incineration with energy recovery (-24 kJ/g of base polymer) in appropriately equipped installations. For disposal, local regulations have to be observed.

 

Crastin® thermoplastic polyester resin typically is used in demanding applications in the electronics, electrical, automotive, mechanical engineering, chemical, domestic appliances and sporting goods industry.

 

Crastin® CE2255 is an unreinforced, low viscosity polybutylene terephthalate resin for injection moulding.

 

Injection molding

PREPROCESSING

Drying recommended = Yes

Drying temperature = 110-130℃

Drying time, dehumidified dryer = 2-4 h

Processing moisture content = <0.04 %

 

PROCESSING

Melt temperature optimum = 250℃

Melt temperature range = 240-260℃

Mould temperature optimum = 80℃

Mould temperature range = 30-130℃

 

PROPERTIES

Rheological properties	Value	Unit	Test Standard
Temperature	250	℃	ISO 1133
Load	2.16	kg	ISO 1133
Moulding shrinkage,parallel	1.9	%	ISO 294-4,2577
Moulding shrinkage,normal	1.9	%	ISO 294-4,2577
Mechanical properties	Value	Unit	Test Standard
Tensile Modulus	2700	MPa	ISO 527-1/-2
Yield stress	59	MPa	ISO 527-1/-2
Yield strain	10	%	ISO 527-1/-2
Nominal strain at break	12	%	ISO 527-1/-2
Charpy notched impact strength,23℃	3.5	kJ/m²	ISO 179/1eA
Thermal properties	Value	Unit	Test Standard
Melting temperature,10℃/min	225	℃	ISO 11357-1/-3
Temp. of deflection under load,1.8 MPa	55	℃	ISO 75-1/-2
Vicat softening temperature,50℃/h,50N	175	℃	ISO 306
Flammability	Value	Unit	Test Standard
Burning Behav. at 1.5 mm nom. thickn.	HB	class	IEC 60695-11-10
Thickness tested	1.5	mm	IEC 60695-11-10
Other properties	Value	Unit	Test Standard
Density	1310	kg/m³	ISO 1183
Rheological calc. properties	Value	Unit	Test Standard
Min. mould temperature	30	℃	-
Max. mould temperature	130	℃	-
Min. melt temperature	240	℃	-
Max. melt temperature	260	℃	-

 

Chemical Media Resistance

Acids

√ Acetic Acid (5% by mass) (23℃)

√ Citric Acid solution (10% by mass) (23℃)

√ Lactic Acid (10% by mass) (23℃)

× Hydrochloric Acid (36% by mass) (23℃)

× Nitric Acid (40% by mass) (23℃)

× Sulfuric Acid (38% by mass) (23℃)

× Sulfuric Acid (5% by mass) (23℃)

× Chromic Acid solution (40% by mass) (23℃)

Bases

× Sodium Hydroxide solution (35% by mass) (23℃)

√ Sodium Hydroxide solution (1% by mass) (23℃)

√ Ammonium Hydroxide solution (10% by mass) (23℃)

Alcohols

√ Isopropyl alcohol (23℃)

√ Methanol (23℃)

√ Ethanol (23℃)

Hydrocarbons

√ n-Hexane (23℃)

√ Toluene (23℃)

√ iso-Octane (23℃)

Ketones

√ Acetone (23℃)

Ethers

√ Diethyl ether (23℃)

Mineral oils

√ SAE 10W40 multigrade motor oil (23℃)

× SAE 10W40 multigrade motor oil (130℃)

× SAE 80/90 hypoid-gear oil (130℃)

√ Insulating Oil (23℃)

× Motor oil OS206 304 Ref.Eng.Oil, ISP (140℃)

× Automatic hypoid-gear oil Shell Donax TX (140℃)

× Hydraulic oil Pentosin CHF 202 (125℃)

Standard Fuels

× ISO 1817 Liquid 1 (60℃)

× ISO 1817 Liquid 2 (60℃)

× ISO 1817 Liquid 3 (60℃)

× ISO 1817 Liquid 4 (60℃)

√ Standard fuel without alcohol (pref. ISO 1817 Liquid C) (23℃)

√ Standard fuel with alcohol (pref. ISO 1817 Liquid 4) (23℃)

√ Diesel fuel (pref. ISO 1817 Liquid F) (23℃)

√ Diesel fuel (pref. ISO 1817 Liquid F) (90℃)

× Diesel fuel (pref. ISO 1817 Liquid F) (>90℃)

× ISO 1817 Liquid 2 (85℃)

√ Diesel EN 590 (85℃)

Salt solutions

√ Sodium Chloride solution (10% by mass) (23℃)

√ Sodium Hypochlorite solution (10% by mass) (23℃)

√ Sodium Carbonate solution (20% by mass) (23℃)

√ Sodium Carbonate solution (2% by mass) (23℃)

√ Zinc Chloride solution (50% by mass) (23℃)

Other

√ Ethyl Acetate (23℃)

× Hydrogen peroxide (23℃)

× DOT No. 4 Brake fluid (130℃)

× DOT No. 4 Brake fluid (120℃)

× Ethylene Glycol (50% by mass) in water (108℃)

× Coolant Glysantin G48, 1:1 in water (130℃)

√ 1% nonylphenoxy-polyethyleneoxy ethanol in water (23℃)

√ 50% Oleic acid + 50% Olive Oil (23℃)

√ Water (23℃)

× Water (90℃)

√ Phenol solution (5% by mass) (23℃)

 

Symbols used:

√ possibly resistant

Defined as: Supplier has sufficient indication that contact with chemical can be potentially accepted under the intended use conditions and expected service life. Criteria for assessment have to be indicated (e.g. surface aspect, volume change, property change).

 

× not recommended - see explanation

Defined as: Not recommended for general use. However, short-term exposure under certain restricted conditions could be acceptable (e.g. fast cleaning with thorough rinsing, spills, wiping, vapor exposure).