Sezvo mitemo yeEU REACH pamwe nemitemo yepasi rose yezvakatipoteredza zvichiwedzera kusimba, vagadziri vemachira anodzivirira moto vanotarisana nematambudziko makuru ekutevedzera mitemo. Mitemo yema halogen, simbi dzinorema uye PBDEs inoita kuti mishonga yechinyakare isatengeseke, nepo kudiwa kwemafuta anodzivirira moto mumaindasitiri neveruzhinji kuchiramba kwakasimba. Ammonium polyphosphate (APP) ndiyo mhinduro huru yekuenzanisa kutevedzera mitemo uye mashandiro, nekuda kwehunhu hwayo hwakagadzikana uye husina halogen.
REACH inoderedza makemikari anokuvadza anopfuura 2000, kusanganisira halogenated flame retardants muzvipfeko zvechinyakare. PBBs nePBDEs zvinorambidzwa nekuda kwekugara kwenguva refu uye chepfu, uye vagadziri vasingateereri mitemo vanotarisana nekusungwa, faindi kana kuregererwa pamusika.
Kunze kwekutevedzera mitemo, halogenated flame retardants dzinoburitsa magasi ane chepfu kana dzapiswa uye dzisingabatanidzi zvakanaka ne epoxy/acrylic resins, zvichikonzera kucheka kwesimba uye kudzikira kwekunamatira—zvichikonzera kudiwa kwezvimwe zvinoshandiswa pakugadzira green.
Semushonga unodzivirira moto usingabvisi halogen, APP inosangana nezvinodiwa neREACH. Chinhu chikuru (NH4)n+2PnO3n+1 hachina zvinhu zvinorambidzwa uye yakanyoreswa neREACH. Iine chimiro chekristalline chena (nzvimbo yekunyunguduka 240-280℃, tembiricha yekuora >300℃), inoramba yakasimba panguva yekupeta.
APP inoita kuti moto usarambe uchibvira kuburikidza nekuumbwa kwekabhoni inobuda mudumbu: kupisa kwakanyanya kunokonzera kuburitswa kweammonia nepolyphosphoric acid, zvichikurudzira kugadzirwa kwekabhoni muvhu kuti igadzire oxygen-insulating layer. Kusiyana ne halogenated options, haiburitse magasi ane chepfu, zvichienderana nemaitiro egirini.
Kugadzirisa magadzirirwo emusanganiswa we ...
APP inoenderana zvakanaka nemelamine nepentaerythritol kuti ive nesystem inopinza mukati memuviri. Kuongororwa kwemaindasitiri kunosimbisa kuti machira ane 25-30% APP (chikamu chikuru) anosangana neGB/T 8624-2012 B1 flame retardant level uye grade 1 adhesion, zvichigutsa mashandisirwo mazhinji.
Pakati pekuvandudzwa kwezvakatipoteredza, APP inosimudzira shanduko muindasitiri yependi inodzima moto. Hunhu hwayo husina halogen, hunoenderana nezvinodiwa uye hwakagadzikana hunogadzirisa REACH pakurwadziwa uye hunotsigira kuchengetedzeka kwemoto—kuziva mashandisirwo eAPP ndiko kwakakosha kune vagadziri kuti vakwikwidzane.
Nguva yekutumira: Kubvumbi-27-2026
