Crastin® LW9320LM BK591 | (PBT+SAN)-I-GF20 THERMOPLASTIC POLYESTER RESIN

Regional Availability

North America, South and Central America

Processing

Injection Moulding

Delivery form

Pellets

Additives

Release agent

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® LW9320LM is a 20% glass fiber reinforced polybutylene terephthalate blend for injection moulding. It has excellent surface aspect, dimensional stability and low warpage and was developed for laser marking applications..

Injection molding

PREPROCESSING

Drying recommended = Yes

Drying temperature = 110-120℃

Drying time, dehumidified dryer = 2-4 h

Processing moisture content = <0.04 %

PROCESSING

Melt temperature optimum = 260℃

Melt temperature range = 240-260℃

Mould temperature optimum = 80℃

Mould temperature range = 30-130℃

PROPERTIES

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℃)

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℃)

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℃)

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

√ 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).