Connectors are made from various materials, each offering different strengths and performance features. Among them, plastic is one of the most important — providing insulation, mechanical protection, and resistance to heat and chemicals. Below is an overview of the most common plastic materials used in connectors and their characteristics.
1. PBT (Polybutylene Terephthalate)
PBT is a widely used engineering plastic offering good strength, rigidity, and resistance to heat, chemicals, and UV light. It also provides excellent electrical insulation and stable dimensions, making it reliable and cost-effective.
Applications: automotive connectors, sensors, and electronic housings.
2. Nylon (PA66)
Nylon, especially PA66, is known for its toughness, flexibility, and impact strength. It performs well in demanding environments but tends to absorb moisture, which can affect precision.
Applications: automotive wiring connectors, plugs, and sockets.
3. 6T Plastic (Polyamide 6T)
6T is a high-performance nylon with better heat resistance and lower moisture absorption than PA66. It maintains strength and shape even under continuous high temperatures.
Applications: under-hood automotive connectors and engine-related parts.
4. 9T Plastic (Polyamide 9T)
9T plastic offers excellent dimensional stability, chemical resistance, and minimal water absorption. It can endure harsh conditions while maintaining accuracy and strength.
Applications: high-end automotive and industrial connectors.
5. LCP (Liquid Crystal Polymer)
LCP is a premium plastic known for superior heat resistance, precision molding, and ultra-low moisture absorption. It supports thin-wall designs and miniaturization, ideal for modern electronics.
Applications: micro connectors, high-frequency connectors, and compact electronic components.
Summary Table
|
Material
|
Heat Resistance
|
Moisture Absorption
|
Mechanical Strength
|
Key Features
|
Typical Applications
|
|
PBT
|
Medium
|
Low
|
High
|
Cost-effective, good insulation, chemical resistance
|
Automotive and electrical connectors
|
|
Nylon (PA66)
|
Medium
-High
|
High
|
Very High
|
Tough, flexible, durable
|
Automotive wiring connectors
|
|
6T Plastic
|
High
|
Low
|
High
|
Excellent thermal stability
|
Engine and high-temp environments
|
|
9T Plastic
|
Very High
|
Very Low
|
High
|
Dimensional stability, chemical resistance
|
High-end automotive & industrial connectors
|
|
LCP
|
Ultra High
|
Very Low
|
Medium-High
|
Precision molding, miniaturization
|
Micro & high-frequency connectors
|
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