PA6 / PA66
Chemistry尼龙 is specified as PA6 / PA66. Density band ~1.14 g/cm³.
What holds 尼龙 together is not the nickname. Formula PA6 / PA66, density ~1.14 g/cm³.
Meters are atlas-relative. Grades are the SKUs buyers write.
阶段
Microstructure
OrderProcessing sets grain, crystallinity or fibre orientation — the reason two lots of 尼龙 can test differently.
Interfaces
SurfacesCoatings, oxide films, sizings or paper faces often decide weather and fire behaviour more than the bulk brochure.
Defects
FlawsInclusions, voids, knots, pinholes or residual stress start the failures that mill certificates do not list.
Grades
Variants尼龙 is a family. Grade names below are the ones buyers actually write on RFQs.
Ageing
TimeMoisture, UV, creep, hydrogen or carbonation shift properties in service. Design to the aged state.
相对标尺
Strength70
Strength is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Heat envelope46
Heat envelope is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Fire behaviour26
Fire behaviour is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Insulation30
Insulation is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Workability84
Workability is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Circularity32
Circularity is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
牌号
PA6 apparel
Textured filament.Textured filament.
PA66 HT
Airbags, cord.Airbags, cord.
BCF carpet
Bulked continuous filament.Bulked continuous filament.
Regenerated PA6
Net-to-yarn.Net-to-yarn.
Glass-filled PA
Engineering resin, not fibre.Engineering resin, not fibre.
键合
Primary bonding
尼龙 holds together by covalent chain chemistry.
Secondary forces
Hydrogen bonds, van der Waals stacks or grain-boundary cohesion set toughness and moisture uptake.
Composites & fills
Fillers, fibres, plasticisers or aggregates are part of the real product, not impurities.
Environment film
Oxides, chars, sizings or paints are the layer the world actually meets.
Change the grade, the coating or the moisture and you have a different material with the same English name.