<\/p>\n
Examid\u00ae PPA GF40 is a polyphthalamide reinforced with 40% glass fiber. The semi-aromatic matrix places the material in the high-temperature class: melting point of 310 \u00b0C, HDT of 275 \u00b0C at 1.80 MPa \u2014 a range inaccessible to aliphatic PA66 GF.<\/p>\n
PPA’s second advantage is moisture uptake of 0.9% (23 \u00b0C, 50% RH), 2.5\u20133\u00d7 lower than PA66: mechanics and dimensions stay stable in humid environments. Tensile modulus of 13,500 MPa, strength of 155 MPa, Charpy unnotched impact of 100 kJ\/m\u00b2. Dielectric strength of 27 kV\/mm supports E&E service.<\/p>\n
The niche: connectors and power-electronics housings, engine-zone parts, metal and PPS replacement in hot humid assemblies. Class analogs \u2014 Ultramid\u00ae Advanced N GF, Grivory\u00ae HTV. Processing: melt 320\u2013335 \u00b0C, mold 135\u2013165 \u00b0C \u2014 hot mold temperature control required.<\/p>\n
<\/p>","protected":false},"excerpt":{"rendered":"
Description Examid\u00ae PPA GF40 is a polyphthalamide reinforced with 40% glass fiber. The semi-aromatic matrix places the material in the high-temperature class: melting point of 310 \u00b0C, HDT of 275 \u00b0C at 1.80 MPa \u2014 a range inaccessible to aliphatic PA66 GF. PPA’s second advantage is moisture uptake of 0.9% (23 \u00b0C, 50% RH), 2.5\u20133\u00d7 […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,21],"tags":[],"class_list":["post-5691","post","type-post","status-publish","format-standard","hentry","category-polyamides","category-ppa"],"yoast_head":"\n