Chinangwa chezvino kugadzirwa ndechekupa nzira yekuvandudza mashandiro ekugadzirisa uye hupenyu hwechigadzirwa chemelamine molding powderzvigadzirwa, kuchengetedza zviwanikwa, kuwedzera ruvara rwezvigadzirwa zvakaumbwa, nekuvandudza kusiyana kwezvigadzirwa zvakaumbwa.
Nzira yekugadzirira inosanganisira A chikamu chekugadzirira, B chikamu chekugadzirira uye kupedza chigadzirwa chekugadzirira.
Chikamu chekugadzirira matanho
1. Kuita: Muchigadziro, iyo formaldehyde resin inogadzirwa mu 38% formaldehyde solution muhuwandu, uye pH inokosha inogadziriswa kusvika 8.5 mu reactor, uye ipapo melamine inowedzerwa muchiyero chekuita.Kupisa kusvika 90 ° C kusvika pakuguma;
2. Kukanya: Mushure mekutonhora kusvika ku70 ° C, isa reactant mukneader, uye wobva wawedzera huni pulp fiber uye pigment A maererano nehuwandu hwekukanya.
3. Kuomesa: Mushure mekukanya, pinda muovheni kuti uome.Ovheni inotora mesh bhandi inopisa air oven, iyo yakaomeswa mumhepo inopisa pa85 ° C, uye unyoro hunodzorwa pasi pe3.5% kuti uwane zvinhu zvakaoma.
4. Kugaya bhora: tumira zvinhu zvakaomeswa kuguyo rebhora, wedzera lubricant, kurapa agent, titanium dioxide uye pigment A additives muhumwe, uye kupedzisa densification uye ruvara runofananidzwa nebhora kugaya mumaawa 9;
Kugadzirira matanho echikamu B
Rudzi rwechikamu B rwakasiyana nechikamu A, asi matanho ekugadzirira akafanana.
Yakapedzwa kugadzirira chigadzirwa: zvakaenzana sanganisa chikamu A uye chikamu Bmelamine powders, uye wozoatakura mubhegi repepa rakagadzirwa nefirimu.Hupfu hwakapedzwa hunofanira kuchengetwa munzvimbo iri pasi pe25°C.
Nguva yekutumira: Nov-25-2020