What are the common insulating materials for electronic connectors?

Thermoplastics: polyamide, polycarbonate, PVC, ABS, polyurethane, polysulfone, PTFE, polyethylene, polypropylene, polyphenylene ether, polyester, PPS - Thermosets: phenolic resins, urea-formaldehyde, DAP, epoxy resins. - Nylon (PA): milky white, very good toughness, abrasion resistance, odorless, can be drilled,, cut, planed, injection molding, good creep resistance (KB600), hygroscopic, heat resistance 105 ℃. - Polycarbonate (PC): good abrasion resistance, good mold plasticity, good insulation properties, dimensional stability, poor solvent resistance, low water absorption, often used for multi-bit connectors, medium creep resistance (KB125) heat resistance of 130 ℃. - Polyvinyl Chloride (PVC): used for cables, sheathing, heat shrink tubing, it has good physical properties, weather resistant, low moisture absorption, good extrusion molding, unsuitable for housings it is viscous, heat resistance 60°C. - Acrylic/butadiene/styrene copolymer (ABS): this plastic is used for nylon shell replacements, good mechanical properties, heat and chemical resistant, easy to process, cheaper than nylon, creep resistant (KB300), heat resistant 60 ° C. - Polyurethane (PUR): easy to bend and fatigue resistance, excellent tear strength, good chemical and solvent resistance, used for ultra-small connectors and rotary switches, heat resistance 85 ℃. - Polysulfone (PSO): used for jack holder shell material, very good electrical properties, excellent temperature resistance, good engineering properties, not too expensive, good chemical resistance, heat resistance 150 ℃. - Polytetrafluoroethylene (PTFE): excellent temperature resistance, very good chemical and solvent resistance, weather resistance, excellent insulating properties, very difficult to absorb water, very expensive, resistant to radiation. Heat resistance 250°C. - Polyethylene (PE): excellent chemical resistance, good insulating properties, cheaper, made of low-density polyethylene, heat resistance 80 ℃. - Polypropylene (PP): lightweight, cheaper, abrasion resistance, good engineering properties, not water resistant, for small and ultra-small coaxial connectors, heat resistance 90 ℃. - Polyphenylene ether (PPO): excellent engineering properties, good mechanical and electrical properties, poor solvent resistance, creep resistance (KB300), heat resistance 105 ℃. - Polyester (PBT): the thermoplastic is increasingly used, excellent chemical and electrical properties, dimensional stability, good plasticity, creep resistance (KB250), heat resistance 120 ℃. - Phenolic Resin (PE): Phenolic resin is composed of phenol and formaldehyde condensate, outstanding resistance to load deflection, dimensional stability over a wide temperature range, resistance to chemicals, common solvents and weak acids, tolerable insulating properties, heat resistance 150 ℃. - Urea-formaldehyde (MF): Urea-formaldehyde is composed of melamine and formaldehyde polycondensates, high mechanical resistance, very low price, very high creep resistance (KB600), available in many colors, heat resistance 70 ℃. - DAP: excellent dimensional stability, temperature resistance, excellent humidity resistance, strong and weak acids, alkalis, solvents, creep resistance (KB600), is a higher quality plastic, usually blue in color, used for more military connectors, very high price, heat resistance 180 ℃. - Epoxy resins (EP): epoxy resins are usually used for high quality printed circuit boards for LGH and ARINC, excellent strength and toughness, excellent adhesion to other materials, low dielectric constant and high voltage resistance, good mechanical stability, corresponding losses, heat resistance 110 ℃.

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