A3HG7 BK 35玻纖增強 低溫韌性PA66 Ultramid 齒輪 缸蓋 

Ultramid A3HG7是一種聚酰胺66增強材料，含有的填充物為35% 玻璃纖維增強材料。它在低溫下具有良好的韌性、硬度、高剛性、高機械強度、剛度、熱穩(wěn)定性、良好的沖擊強度和良好的加工性能。該牌號對化學(xué)品、熱潤滑劑和熱水、燃料、液壓油和冷卻劑、制冷劑、染料、油漆、清潔劑、脫脂劑、脂肪族和芳烴以及許多其他溶劑具有出色的耐受性。與許多無定形塑料相比，它耐腐蝕、耐鹽和堿的水溶液以及應(yīng)力裂紋的形成。它具有良好的彈性和介電性能，高耐熱老化性，高尺寸穩(wěn)定性，高蠕變強度和良好的滑動摩擦性能。Ultramid A3HG7采用注塑成型加工。它用于齒輪、電磁閥外殼、電纜附件、汽車歧管和氣缸蓋蓋以及電氣絕緣部件。

Ultramid A3HG7 is a polyamide 66 reinforced with 35% glass fiber. It provides good toughness at low temperatures, hardness, high rigidity, high mechanical strength, stiffness, thermal stability, very good impact strength and good processability. This grade exhibits outstanding resistance to chemicals, hot lubricants and hot water, fuels, hydraulic fluids and coolants, refrigerants, dyes, paints, cleaners, degreasing agents, aliphatic and aromatic hydrocarbons and many other solvents. It is resistant to corrosion, to aqueous solutions of salts and alkalis and to stress-crack formation compared to many amorphous plastics. It possesses good elastic & dielectric properties, high heat-aging resistance, high dimensional stability, high creep strength and excellent sliding friction properties. Ultramid A3HG7 is processed by injection molding. It is used for gear-wheels, solenoid valve housings, cable attachments, automobile manifolds and cylinder head covers as well as for electrical insulating parts.