What are the applications of engineering plastic polyamide in life?

The application of engineering plastic polyamide in daily life permeates multiple fields, and its core value lies in the characteristics of replacing steel with plastic and being lightweight and durable. Specific typical scenarios are as follows:

1. Clothing and luggage
Zipper teeth: replace copper teeth, wear-resistant and rust proof, improve smoothness (such as YKK high-end zippers)
Velcro hook surface: Nylon material with high hook toughness, can be opened and closed ten thousand times without deformation
Backpack load-bearing buckle: The waist buckle of the backpack can withstand the impact of human weight without cracking

2. Household items
Kitchen utensils: Oil resistant cutting board, spatula handle (resistant to 100 ℃ steam disinfection)
Sliding door and window pulley: Silent nylon roller to avoid scraping noise from metal tracks
Bathroom showerhead valve core: resistant to scale corrosion, with a lifespan three times longer than copper valves

3. Transportation
Car door lock mechanism: Fiberglass reinforced nylon gear, non brittle at -30 ℃ low temperature
Bicycle pedal bearing: self-lubricating nylon cage, maintenance free riding
Electric vehicle charging gun head: flame retardant nylon shell, 750 ℃ open flame does not spread

4. Electronic appliances
Router shell: Shielding electromagnetic interference, integrated injection molding of heat dissipation holes
Electric tool gearbox: shock absorption and noise reduction, anti fragmentation under load impact of electric drill
Mobile phone card holder: 0.3mm ultra-thin structure, repeatedly inserted and removed without breaking

5. Sports and leisure activities
Mountaineering buckle lock core: resistant to UV aging, not brittle after 5 years of outdoor exposure
Badminton racket wire hole: high-strength nylon wire protection nail, reducing racket wire wear and breakage
Ski board holder: maintain elasticity at -40 ℃ to avoid the risk of ice cracking

6. Safety protection
Fire helmet buckle: maintain structural integrity for 60 seconds in a high-temperature fire scene at 850 ℃
Explosion proof electrical box knob: static electricity does not accumulate, chemical workshop explosion-proof certification
Child safety seat buckle: resilient deformation and energy absorption during collision, protecting the chest cavity