40% Glass Bead PA66 Basic Innovative Plastic; United States&# 41; RB008
Category:
Rubber and plastic/engineering plastic/PA66
Model:
Brand:
Basic innovative plastics
Retail Price
32.00USD
重量
kg
- Product Description
-
Description :
40% Glass Bead PA66 Basic Innovative Plastic (USA) RB008
Our company supplies raw materials such as PC, ABS, PEI, PBT, PA6, PA66, PPO, etc. for SABIC at favorable prices. You can directly contact Ms. He.
Nylon 66 drying temperature
Crystallinity
Except for transparent nylon, nylon is mostly a crystalline polymer with high crystallinity. Its properties such as tensile strength, wear resistance, hardness, and lubricity have been improved, while its thermal expansion coefficient and water absorption tend to decrease. However, it is not conducive to transparency and impact resistance.
The mold temperature has a significant impact on crystallization, with higher mold temperature resulting in higher crystallinity and lower mold temperature resulting in lower crystallinity.
shrinkage rate
Similar to other crystalline plastics, nylon resin has a problem of high shrinkage rate. Generally, the shrinkage of nylon is closely related to crystallization. When the crystallinity of the product is high, the shrinkage of the product will also increase. During the molding process, reducing the mold temperature, increasing the injection pressure, and reducing the material temperature can all reduce shrinkage, but increasing the internal stress of the product can easily cause deformation For example, the shrinkage rate of PA66 is 1.5-2%. For products without additives, the shrinkage rate of PA6 is between 1% and 1.5%. Adding glass fiber additives can reduce the shrinkage rate to 0.3% (but slightly higher in the direction perpendicular to the process).
forming equipment
When molding nylon, the main attention should be paid to preventing the phenomenon of "nozzle drooling", so self-locking nozzles are generally used for processing nylon materials. Additionally, choose an injection molding machine with a slightly larger plasticizing capacity.
Products and molds
1. Wall thickness of the product
The flow length ratio of nylon is between 150-200, and the wall thickness of nylon products should not be less than 0.8mm, generally ranging from 1-3.2mm. Moreover, the shrinkage of the product is related to its wall thickness, and the thicker the wall thickness, the greater the shrinkage.
2. Exhaust gas
The overflow value of nylon resin is about 0.03mm, so the exhaust hole groove should be controlled below 0.025.
3. Mold temperature
For molds with thin walls that are difficult to form or require high crystallinity, cold water temperature control is generally used for molds that require a certain degree of flexibility.
4. The diameter of the runner and sprue should not be less than 0.5 * t (where t is the thickness of the plastic part). Using a submerged gate, the minimum diameter of the gate should be 0.75mm
AfterSalesService :
Key words:- Glass bead PA66
