In fields such as industrial automation, automotive electronics, and new energy, sensors serve as the “nerve endings” for data acquisition and system control, and their reliability directly determines the operational efficiency and safety of equipment. As the core carrier of signal transmission, the sensor probe harness is exposed to complex environments such as vibration, temperature difference, humidity, and chemical corrosion for a long time. How to achieve long-term sealing protection of the harness through encapsulation technology has become a key focus of industry technological research.
1、 Industry pain point: The rigorous challenge of PVC wire harness encapsulation
Polyvinyl chloride (PVC) is widely used as an insulation layer for industrial sensor wiring harnesses due to its low cost, good flexibility, and corrosion resistance. However, traditional potting materials often face the following challenges when bonding PVC substrates:
Insufficient adhesion: Long term vibration or bending of the wire harness can easily cause delamination between the adhesive and PVC, leading to sealing failure;
Poor temperature adaptability: Colloids become brittle and crack at extreme low temperatures, and soften and deform at high temperatures, making it difficult to meet the industrial requirements of -40 ℃~85 ℃;
Weak impact resistance: The thermal expansion and contraction stress caused by equipment start stop or sudden environmental changes accelerates the cracking of the sealing layer.
These issues not only affect the stability of sensor signal transmission, but may also cause equipment failures or even safety accidents. Therefore, a sealing adhesive that combines strong adhesion, wide temperature range stability, and impact resistance has become an urgent need in the industry.
Why do we need high-quality potting materials?
In industrial applications, sensor probe harnesses are typically exposed to various harsh environments, including high and low temperatures, humidity, vibration, and chemical corrosion. These external factors can easily cause the wiring harness to age, crack, or detach, thereby affecting the normal operation of the sensor. Therefore, choosing a suitable potting material is crucial, as it not only provides physical protection but also enhances the stability and reliability of the overall structure.
The commonly used potting materials on the market currently include epoxy resin, silicone, and polyurethane. Among them, polyurethane is widely used in the packaging and protection of electronic components due to its good flexibility, strong weather resistance, and moderate cost. PUR 1670 is one of the best polyurethane sealing materials, and its unique formula design makes it perform well in multiple aspects.
PUR 1670： Innovative material designed specifically for PVC wire harness encapsulation
PUR 1670 is a single component moisture curing polyurethane sealant specially developed to solve the sealing and protection problems of PVC wire harnesses in high and low temperature, vibration environments. Its core advantages are reflected in:
Low viscosity, long operating time
Excellent mechanical performance and excellent toughness
Excellent low-temperature characteristics and outstanding weather resistance
Excellent electrical insulation and stability stability
Good waterproof and moisture-proof properties, with extremely low water absorption rate
Has good adhesion to most metals and plastics
In summary, PUR 1670, as a high-performance polyurethane material designed specifically for industrial sensor probe wire harness encapsulation, has gained widespread recognition in the market due to its excellent bonding performance, stable high and low temperature impact performance, and environmental safety characteristics. Whether in the fields of automotive electronics, household appliances, or new energy, PUR 1670 can provide comprehensive protection and support for your products.
label: Pur 1670 · Sensor probe wire harness encapsulation · Wire harness encapsulation
