How to select the plastics raw materials for connectors

Using actual cases, we,FOREVER, will provide you with the best solution for selecting plastic raw materials.

1. Strength requirements: tensile strength ≈ 150MPa

Common unreinforced engineering plastics are basically excluded, and the matching scope is special engineering plastics or glass fiber reinforced engineering plastics.

Suitable material strength from low to high:

PBT glassfiber

PA6 glassfiber

PPS glassfiber

High temperature nylon: PA46, PA6T

PSU/PEI: The specifications without glass fiber filling are 110mpa, and the specifications with glass fiber filling meet

PCT

PPS

LCP

…

2. Temperature resistance requirements: The operating ambient temperature is 80°C, but RTI 150°C is required

We first considered the high-performance standard - long-term use temperature 150°C (>20,000 hrs). Some materials that meet the requirements include: PEI&TPI, PPS, PEEK, PET, LCP, PPA, etc.

3. CTI>2：

If it is required to meet the condition of CTI level 0 electrical performance at the same time, you can see that LCP, PEI, PPS and other specifications do not meet the requirements.

Considering that the long-term use temperature of the product is 80°C, the 150°C evaluation time is shortened (less than 10,000hrs), and high heat-resistant aliphatic PA reinforcement materials can also be considered at low cost.

Opening the physical property table, you can see that the tensile strength of 150Mpa and CTI 600V meet the requirements; in terms of heat resistance, you can see that at 170°C & 5000 hours, the material performance has almost no decrease, and it can be used as a low-cost solution.

4. Flame retardant V0