Polyphthalamide -- PPA custom plastic injection molding and mold maker for you, it is PPA +45GF reinforced engineering plastic molded compound which used for automotive industry. Higher temperature and very good abrasive resistance.
Project details as below :
custom plastic injection molding
Core surface finish:
Cavity surface finish:
No of Cavities:
2 drops Hot runner
Type of gating:
6 sliders, 1.2343
Lead time for FOT:
Mold base steel:
Mold Price Totally:
1） Special engineering plastic injection molding material
2) Special formulated for connector applications requiring compatibility with both infrared and vapor phase soldering operations
3) High loaded temperature at 250 degree Celsius
4) Water contact ability
5) V0 grade flame retardant
Asia Billion is a high quality engineering plastic injection mold manufacture in Shenzhen south of China, half of our production are special engineering plastic molding project , such as PPA, PEI, LCP, PPS, PPSU and so on, we are ISO 9001 certified and accord to the TS 16949 standard to control our manufacturing process. If you have any injection molding project , no matter what kind of material , Please contact us freely for you project.
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Advantages of PPA injection molded parts
PPA ( full name as polyphthalamide) Plastics: High temperature resistant nylon PPa has a heat distortion temperature of over 300 °C and a continuous use temperature of 170 °C to meet your short-term and long-term thermal performance.
Also known as high temperature resistant nylon heat distortion temperature above 300 °C Features Superior mechanical properties Continuous use temperature up to 170 ° C
Introduction to PPA
Maintains superior mechanical properties - strength, hardness, fatigue resistance and creep resistance - over a wide temperature range and in high humidity environments. Toughened grade PPA combines superior toughness with a range of hardness and flexibility, and requires a one-time rigidity in fasteners and a good choice for flexibility in repetitive use.
Polyphthalamide (PPA) resin is a semi-aromatic polyamide based on terephthalic acid or phthalic acid. Both semi-crystalline and non-crystalline, the glass transition temperature is around 255 °F. Amorphous PPA is mainly used in applications where barrier properties are required; semi-crystalline PPA resins are mainly used for injection molding, and are also used in other melt processing processes. The latter mainly introduces the latter - semi-crystalline PPA resin, specifically noted except. The semi-crystalline PPAS has a melting point of about 590 °F and is supplied in the form of opaque rectangular slices.
☆ PPA strength, toughness and hardness superior performance, as well as its good heat-resistant parts, chemical resistance and crack resistance
☆PPA can maintain strength and hardness due to high temperature and high humidity environment, and can replace metal in the traditional nylon and polyester.
☆ PPA plastic also has superior surface gloss. It can be colored to avoid surface spray, which helps to reduce the apparent extent of surface scratches and scratches.
☆ PPA plastic also has good processability and allows short injection cycle time
Compared with PA46:
√PPA has higher thermal stability than PA46;
√PPA has better CTI/Arc resistance and infrared cocurrent flow capability than PA46;
√PPA has better chemical resistance than PA46; ☆ Auto parts, including fuel, transmission and engine systems, reduce weight, reduce costs and provide long service life;
☆ Chipset and socket, cup body soldering support;
☆ Chip capacitors, switches and micro-horns, making high-density printed circuit board connectors;
☆ For applications where high wear resistance is required, such as un-lubricated bearings, seals, bearing spacers and reciprocating compressor parts;
☆ Connectors, controllers, sensors, motors and other key electronic components
All polyphenolamines absorb certain moisture, causing plasticization and dimensional changes. For example, nylon 6,6, at 23 °F, with a relative humidity of 100%, can absorb 8.9% of water, which reduces its glass transition temperature from 6.5 ° C to 20 ° C, and increases the size by 2. 3%. Under the same conditions, the PPA resin can absorb about 6% of water, but its glass transition temperature Tg is not lower than 40 ° C, and the accompanying dimensional growth does not exceed 1.0%.
As mentioned earlier, glass-reinforced PPA resins have high HDT values and can withstand short-term effects at very high temperatures, such as in a furnace or in a vapor phase and in an infrared countercurrent solidification process. The thermal oxidative stability of PPA resin makes it resistant to long-term high temperature. Glass reinforced grade PPA can be used continuously for up to 330 °F in 20,000 hours.
Under normal environmental conditions, PPA resins generally exhibit excellent resistance to aliphatic hydrocarbons, aromatic hydrocarbons, chlorinated hydrocarbons, esters, ketones, alcohols, and most aqueous solutions. Such resins are not able to withstand the action of very strong acids and strong oxidizing agents. Soluble in phenol and cresol. PPA is not inherently flame retardant. According to the UL94 standard, flame retardant grade resins are rated VO up to 0.031 inch thickness.
Although other melting processes can be used, most PPA resins are processed by conventional injection molding. The PPA material is pre-dried to a moisture level of less than 0.1% and then placed in a heat-sealed metal village bag or box that ensures that the PPA material does not need to be dried before processing. The acceptable humidity level for the process is 0.15% or less. The processing of wet resins results in a reduction in molecular weight, resulting in a corresponding loss of mechanical properties. Using a desiccant bucket dryer, it is easy to dry the resin to a dew point humidity of 175 °F or even lower at 175 °F. The drying time depends on the amount of water absorbed, usually in the range of 4-16 hours.
When the injection temperature is in the range of 615-650 °F, the residence time of the material in the barrel does not exceed 10 minutes, so that the mechanical properties of the injection molded product are the best. The mold temperature is required to be at least 275 °F in order to obtain a product with the best crystallization and dimensional stability. Partially thick-walled parts can be injection molded at lower mold temperatures due to slower cooling rates. The mold temperature is critical to optimize the surface feel of the finished part. The mineral filler grade PPA resin used for vacuum metallization into electroplated metal requires a mold surface temperature of 350 °F.
Due to the outstanding physical, thermal and electrical properties of PPA resins, especially the moderate cost, it has a wide range of applications. Together with these excellent chemical resistance, PPA has become a candidate for many uses in the automotive industry. A better aerodynamic body design, along with a higher performance motor, will increase the temperature of the engine compartment, making traditional thermoplastics seem inadequate. These new requirements make PPA one of the candidates for the following components: automotive headlamp reflectors, housings, pulleys, sensor housings, fuel line components, and electrical components.
The development direction of electrical components is miniaturization and high-temperature solidarity, such as infrared consolidation and vapor phase solidarity, which requires the superior performance of PPA. Flame-retardant PPA has excellent electrical properties, high HDT value, high high-temperature flexural modulus, and thin-walled parts that can be grown with minimal flash processing, making it suitable for switchgear. Connector, brush holder and motor bracket.
Mineral filler grade PPA is used for reflective surfaces and metallization applications, including automotive headlights, decorative fittings and hardware. The unreinforced impact modified grade PPA has excellent balance mechanical and high temperature properties. Extraordinary toughness and these properties are minimally affected by humidity, including oilfield components, military supplies, sporting goods, fan impellers and gears, and personal safety products.
Contact us freely for your PPA Custom Plastic Injection Molding or other material at:
Asia Billion Innovational Technology Ltd
ADD: Building 9 , Wantou Industrial Park, Hongxing Village,SongGang Town, Shenzhen City, China 518105
E-mail: firstname.lastname@example.org ; email@example.com
Phone: 0086-134 8063 8827
Website: www.ab-industry.com www.ab-industry.net