Dongguan Daqian engineering plastic The limited company supplies MAPEX A0520FN plastic raw materials from stock! Technical support: * * *, pin Sales Tel.: Miss Chen * * *. Corresponding valid report certificates, quality assurance and relevant performance test reports can be provided, such as: LCP E6807LHF Material Safety Data Sheet（ MS DS), MAPEX A0520FN UL yellow card MAPEX A0520FNROHS (SGS) report. Welcome new and old customers to negotiate!
PA66
Typical application range:
Compared with PA6, PA66 is more widely used in the automotive industry, instrument housings and other products requiring impact resistance and height.
Injection mold process conditions:
Drying: If the material is sealed before processing, drying is not necessary. However, if the storage container is opened, it is recommended to dry it in hot air at 85 ℃. If the humidity is greater than 0.2%, vacuum drying at 105 ℃ for 12 hours is also required.
Melting temperature: 260~290 ℃. The temperature of glass additive is 275~280 ℃. The melting temperature should not be higher than 300 ℃.
Mold temperature: 80 ℃ is recommended. The mold temperature will affect the crystallinity, which will affect the physical properties of the product. For thin-walled plastic parts, if the mold temperature is lower than 40 ℃, the crystallinity of plastic parts will change with time. In order to maintain the geometric stability of plastic parts, annealing treatment is required.
Injection pressure: usually 750~1250bar, depending on the material and product design.
Injection speed: high speed (lower for reinforced materials).
Runner and gate: Since the solidification time of PA66 is very short, the position of the gate is very important. The gate aperture shall not be less than 0.5 * t (where t is the thickness of the plastic part). If hot runners are used, the gate size should be smaller than that of conventional runners, because hot runners can help prevent premature solidification of the material. If a submerged gate is used, the smaller diameter of the gate should be 0.75 mm.
Chemical and physical properties:
PA66 has a high melting point in polyamide materials. It is a semi crystalline crystalline material. PA66 can also maintain strong strength and stiffness at higher temperatures. PA66 still has hygroscopicity after molding, and its degree mainly depends on material composition, wall thickness and environmental conditions. In product design, the influence of moisture absorption on geometric stability must be considered. In order to improve the mechanical properties of PA66, various modifiers are often added. Glass is a common additive. Sometimes synthetic rubber, such as EPDM and SBR, is added to improve impact resistance. The viscosity of PA66 is low, so its liquidity is very good (but not as good as PA6). This property can be used to process very thin components. Its viscosity is very sensitive to temperature changes. The shrinkage of PA66 is between 1% and 2%, and the addition of glass fiber additive can reduce the shrinkage to 0.2%~1%. The shrinkage rate differs greatly in the flow direction and the direction perpendicular to the flow direction. PA66 is resistant to many solvents, but weak to acids and other chlorinating agents.
Product parameter table:
Performance items | Test conditions [status] | test method | test data | Data unit |
Basic performance | Water absorption | 24hr | ASTM D-570 | zero point six zero | % |
physical property | proportion | | ASTM D-792 | one point five zero | g/cm three |
Mold shrinkage | Flow | ASTM D-955 | zero point three zero | % |
Mechanical properties | Rockwell hardness | | ASTM D-785 | one hundred and twenty-one | R-Scale |
Tensile strain at break | | ASTM D-638 | two | % |
Bending modulus | | ASTM D-790 | eight thousand two hundred and seventy | MPa |
bending strength | | ASTM D-790 | two hundred and twenty-one | MPa |
IZOD notch impact strength | | ASTM D-256 | ninety-six point one | J/m |
Thermal performance | Hot deformation temperature | 1.80MPa, not annealed | ASTM D-648 | two hundred and forty-five | ℃ |
Flame retardancy | 0.794mm | UL 94 | V-0 | |
Product description:
Purpose: connector, electrical/electronic application
Remarks: Flame retardant, good formability, good toughness and high rigidity
Our company has sufficient supplies, complete varieties and reasonable prices. Other raw material brands cannot be described in detail. Please write or call us for specific matters (physical properties, quotation, UL report, RoSH standard, SGS test report, etc.)!
