In order to provide intelligent technology and lightweight plastic parts for power electronic equipment, BASF has introduced a kind of polyphenyldicarbonamide (PPA), which is especially suitable for manufacturing the case of insulated gate bipolar transistor (IGBT). Ultraram ID Advanced N3U41G6LS, which can be marked by laser, is a halogen-free flame retardant compound with excellent thermal stability, low water absorption and excellent electrical properties. Its characteristic is that the relative leakage tracking index (CTI) exceeds 600V V. Compared with the materials used for IGBT up to now, Ultraram ID Advanced N3U41G6LS has lower creepage distance and better insulation performance, thus contributing to the lightweight and miniaturization of IGBT.
Due to its excellent chemical resistance and dimensional stability, Ultramid® Advanced N products can improve the strength, long-term performance and reliability of IGBT in the fields of electric vehicles, high-speed railways, solar energy and wind energy, and intelligent manufacturing, and meet the growing needs of customers for energy saving, weight reduction and portability.
Insulated gate bipolar transistor plays the role of fast and efficient switching in high power circuits. IGBT can be assembled into modules to realize higher voltage, higher current and more compact electrical applications. Under severe conditions, materials must have excellent electrical insulation, flame retardancy, dimensional stability and long-term heat and moisture resistance: Ultramid® Advanced N is optimized to withstand higher temperatures and greater currents while maintaining its mechanical strength, so it is sufficient to meet these challenges. It can protect semiconductors from mechanical and environmental influences, such as moisture, dust and dirt.
UL certified Ultramid® Advanced N has excellent electrical RTI (relative thermal index) value up to 150 C. In addition, it does not contain corrosive components such as halogen, so the risk of contact corrosion can be avoided. In the production process of IGBT, BASF PPA can be injection molded with metal components and has good compatibility with semiconductor packaging materials.
Description of physical properties of PPA raw materials
Polyphthalamide, under high temperature and high humidity, the tensile strength of PPA is 20% higher than that of nylon 6, and higher than that of nylon 66; The bending modulus of PPA material is 20% higher than that of nylon, and it has greater hardness and can resist long-term tensile creep. And PPA has stronger resistance to gasoline, grease and coolant than PA. PPA is a kind of high temperature resistant nylon, which can withstand the continuous high temperature of 200℃ and maintain good dimensional stability. Polyphthalamide (PPA) resin is a semi-aromatic polyamide with terephthalic acid or phthalic acid as raw material. There are both semi-crystalline and amorphous States, and their glass transition temperature is about 255 F. Non-crystalline PPA is mainly used in occasions where barrier properties are required; Semi-crystalline PPA resin is mainly used in injection molding and other melting processes. The latter, semi-crystalline PPA resin, is mainly introduced below, unless otherwise specified. Semi-crystalline PPAS has a melting point of about 590°F and is supplied in the form of opaque rectangular slices. Application scope of PPA resin: PPA resin has a wide range of applications because of its outstanding physical, thermal and electrical properties, especially its moderate cost. Together with excellent chemical resistance, these properties make PPA a candidate for many applications in the automobile industry. The trend of better aerodynamic body design and higher performance motor will increase the temperature of engine box, making traditional thermoplastics not suitable. These new requirements make PPA one of the candidate materials for manufacturing the following components: automobile headlight reflector, bearing seat, pulley, sensor housing, fuel line components and electrical components.
Typical application scope of PPA
1. Automobile parts, including fuel, transmission and engine system, can reduce weight, reduce cost and provide long-term service.
Service life;
2. The chipset, the socket and the cup are welded with the support;
3. Chip capacitors, switches and micro-speakers, and high-density printed circuit board connectors;
4. Used in occasions with extremely high wear resistance requirements, such as non-lubricated bearings, seals, bearing isolation rings and reciprocating compressor parts;
5. Connectors, controllers, sensors, motors and other key electronic components;
Main features:
PPA has excellent properties of strength, toughness and hardness, as well as its good heat-resistant parts, chemical resistance and cracking resistance. PPA can still maintain its strength and hardness in high temperature and high humidity environment, and can replace metal PPA plastics in situations where traditional nylon and polyester cannot be used immediately. It also has excellent surface gloss. It can be colored to avoid surface spraying, thus helping to reduce the obvious degree of surface scratches and scratches. PPA plastics also have good processability and allow short injection cycle time.
PPA uses:
1. Automobile headlight reflector, bearing seat, pulley, sensor housing, fuel pipeline components and electrical components.
2. The development direction of electrical components is miniaturization and high temperature bonding, such as infrared bonding and vapor phase bonding, which requires the superior performance of PPA. Flame retardant PPA has excellent electrical properties, high HDT value and high bending modulus. It can process long thin-walled parts with minimum flash, so it is suitable for making switchgear. Connecting piece, brush holder and motor bracket.
3. Mineral filler grade PPA is used for reflective surface and metal plating, including automobile headlights, decorative fittings and hardware. Unreinforced impact modified PPA has excellent balanced mechanical and high temperature properties. Extraordinary toughness and these properties are rarely affected by humidity, and their uses include oilfield parts and military supplies. Sporting goods, fan impeller and gear and personal safety products.
Characteristics of PPA high temperature nylon
Description of PPA performance: The thermal deformation temperature of the modified poly (p-phenylene terephthalamide) plastic is over 300℃, and the continuous use temperature can reach 170℃, which can meet your short-term and long-term thermal performance. It can be used in a wide temperature range and
Maintain its superior mechanical properties-strength, hardness, fatigue resistance and creep resistance in high humidity environment. Toughened LV PPA combines superior toughness with a certain range of hardness and flexibility, which requires one-time rigidity and repeatability in fasteners.
A good choice of flexibility in use. At the same time, we provide special grade products for spraying and electroplating surfaces, fire resistance, ethylene glycol resistance and reflexivity requirements.
Main features:
PPA has excellent strength, toughness and hardness, as well as good heat resistance, chemical resistance and cracking resistance.
PPA can still maintain its strength and hardness in high temperature and high humidity environment, and can replace metals when traditional nylon and polyester can’t be used immediately.
PPA plastics also have excellent surface gloss. It can be colored to avoid surface spraying, thus helping to reduce the obvious degree of surface scratches and scratches.
PPA plastics also have good processability and allow short injection cycle time.
Our Carbide Bedknife can solve the problem of efficient granulation of PPA with glass fiber content above 50%, with long service life, sharp incision and beautiful particles.
