Nnianim asɛm a ɛfa Polyamide Adhesives ho

Epoxy-polyamide adhesives, a wɔde epoxy resins ayɛ no, kura fatty acid carbon nkɔnsɔnkɔnsɔn atenten, na ɛde ade a ɛyɛ den nanso ɛnyɛ-brittle a wɔasa no ba. Wɔwɔ ahwehwɛde a emu yɛ den pii a wɔde frafra, kuku no nkwa nna tenten, na ɛnyɛ den sɛ wɔde bedi dwuma. Wɔda adhesion a emu yɛ den adi, ɛkyerɛ sɛ ɛyɛ adwuma pa wɔ bonding adwumayɛ mu wɔ dade ne dodow no ara a ɛnyɛ -dade ho. Aduru a wɔasa no yare no ntumi twetwe (a ɛba fam anaasɛ ɛnyɛ awuduru mpo), na ɛma ɛyɛ ade a wɔde nkata nneɛma a atwa yɛn ho ahyia ho. Ɔhyew betumi ama aduru no ayɛ ntɛmntɛm na ama ahoɔden a ɛwɔ nkitahodi mu no atu mpɔn; sɛ wɔde simma 30 yɛ no yare wɔ digrii 120 mu a, ɛne nnafua 7 wɔ dan mu hyew mu yɛ pɛ. Nanso, ne hyew a ɛko tia no sua koraa, na ɔhyew a ɛsen biara a ɛyɛ adwuma no yɛ digrii 60 .

Wɔreyɛ polyamide aduru a wɔde sa yare a emu duru sua-molecular-aduru foforo bere nyinaa, a ahorow ahorow a nea ɛka ho ne nea ɛka ho ne nea ɛyɛ mmerɛw-a ɛyɛ mmerɛw, ɛyɛ mmerɛw, ɛyɛ ntɛmntɛm-aduru, nea ɛbata ho kɛse, ne nea egyina nsu so. Ebinom betumi anya ahoɔden a wɔde peel ayɛ a ɛboro 10 kN/m ama epoxy adhesives, a ɛboro aliphatic amine aduru a wɔtaa de sa yare no mmɔho anum.

Ɛwom sɛ epoxy-low molecular weight polyamide adhesives wɔ toughness pa de, nanso nhyehyɛe ahorow a enni toughening agents no nkitahodi ahoɔden nyɛ kɛse. Sɛ nhwɛso no: E-51 epoxy resin afã 100 (sɛnea emu duru te), polyamide 651 afã 50, calcium carbonate a emu yɛ hare afã 50, DMP-30 afã 2, ne KH-550 afã 1. Curing wɔ 80℃nnɔnhwerew 3. Dan mu hyew shear ahoɔden a bonded dade no yɛ 18.2 MPa.