I-Epoxy Resin

1、Intshayelelo

I-epoxy resin idla ngokusetyenziswa kunye nezongezo. Izongezo zingakhethwa ngokweendlela ezahlukeneyo zokusetyenziswa. Izongezo eziqhelekileyo ziquka i-Curing Agent, i-Modifier, i-Filler, i-Diluent, njl.

I-ejenti yokunyanga yinto efunekayo. Nokuba i-epoxy resin isetyenziswa njenge-adhesive, i-coating, i-castable, okanye i-curing agent kufuneka yongezwe, kungenjalo ayinakunyangwa. Ngenxa yeemfuno ezahlukeneyo zokusetyenziswa kunye nokusebenza, kukho iimfuno ezahlukeneyo ze-epoxy resin, i-curing agent, i-modifier, i-filler, i-diluent kunye nezinye izongezo.

2,Ukukhethwa kwe-Epoxy Resin

(1) Khetha ngokwe-Application

① Xa isetyenziswa njenge-adhesive, kungcono ukhethe i-resin enexabiso eliphakathi le-epoxy (0.25-0.45);

② Xa isetyenziswa njengento enokuphoswa, kungcono ukhethe i-resin enexabiso eliphezulu le-epoxy (0.40);

③ Xa isetyenziswa njengengubo, i-resin enexabiso eliphantsi le-epoxy (< 0.25) ikhethwa ngokubanzi.

(2) Khetha ngokweMishini yamandla

Amandla anxulumene nenqanaba lokudibanisa. Ixabiso le-epoxy liphezulu, kwaye inqanaba lokudibanisa liphezulu emva kokuqina. Ixabiso le-epoxy liphantsi kwaye inqanaba lokudibanisa liphantsi emva kokuqina. Ixabiso le-epoxy elahlukileyo liya kubangela amandla ahlukeneyo.

① I-resin enexabiso eliphezulu le-epoxy inamandla aphezulu kodwa iyaqhekeka;

② I-resin enexabiso eliphakathi le-epoxy inamandla amahle kubushushu obuphezulu nobuphantsi;

③ I-resin enexabiso eliphantsi le-epoxy ayinamandla kakhulu xa ishushu kakhulu.

(3) Khetha ngokweeMfuno zokuSebenza

① Abo bangafuni ukumelana nobushushu obuphezulu namandla, banokukhetha i-resin enexabiso eliphantsi le-epoxy enokoma ngokukhawuleza kwaye kulula ukuyilahla.

② Abo bafuna ukuvuleka kakuhle kunye namandla, banokukhetha i-resin enexabiso eliphezulu le-epoxy.

3,Ukukhethwa kweArhente yokuPhilisa

(1) Uhlobo lweArhente yokuPhilisa:

Iiarhente zokuphilisa eziqhelekileyo ze-epoxy resin ziquka i-aliphatic amine, i-alicyclic amine, i-aromatic amine, i-polyamide, i-anhydride, i-resin kunye ne-tertiary amine. Ukongeza, phantsi kwefuthe le-photoinitiator, i-UV okanye ukukhanya kunokwenza i-epoxy resin curing. Iarhente yokuphilisa i-amine isetyenziswa ngokubanzi kubushushu begumbi okanye kubushushu obuphantsi, ngelixa i-anhydride kunye ne-aromatic curing agent zisetyenziswa rhoqo ekufudumaleni.

(2) Umlinganiselo we-Agent yokunyanga

① Xa i-amine isetyenziswa njenge-arhente yokudibanisa, ibalwa ngolu hlobo lulandelayo:

Idosi ye-amine = MG / HN

M = ubunzima be-molecular ye-amine;

I-HN = inani le-hydrogen esebenzayo;

G = ixabiso le-epoxy (elilingana ne-epoxy kwi-100 g ye-epoxy resin)

Uluhlu lotshintsho aludluli kwi-10-20%. Ukuba inyangiwe nge-amine eninzi, i-resin iya kuba buthathaka. Ukuba umthamo umncinci kakhulu, ukunyibilika kwayo akugqibelelanga.

② Xa i-anhydride isetyenziswa njenge-arhente yokudibanisa, ibalwa ngolu hlobo lulandelayo:

Idosi ye-Anhydride = MG (0.6 ~ 1) / 100

M = ubunzima be-anhydride yemolekyuli;

I-G = ixabiso le-epoxy (0.6 ~ 1) yi-coefficient yovavanyo.

(3) Umgaqo Wokukhetha Iarhente Yokunyanga

① Iimfuneko Zokusebenza.

Ezinye zifuna ukumelana nobushushu obuphezulu, ezinye zifuna ukuguquguquka, kwaye ezinye zifuna ukumelana nokugqwala okuhle. Iarhente yokunyanga efanelekileyo ikhethwa ngokweemfuno ezahlukeneyo.

② Indlela Yokunyanga.

Ezinye iimveliso azinakufudumala, ngoko ke iarhente yokunyanga yokuphelisa ubushushu ayinakukhethwa.

③ Ixesha lokufaka isicelo.

Ixesha elibizwa ngokuba lixesha lokusetyenziswa libhekisa kwixesha elisusela kwixesha apho i-epoxy resin yongezwa kunye ne-ejenti yokuphilisa ukuya kwixesha apho ingasetyenziswa. Xa kusetyenziswa ixesha elide, kusetyenziswa ii-anhydrides okanye ii-ejenti zokuphilisa ezifihlakeleyo.

④ Ukhuseleko.

Ngokubanzi, into yokunyanga engenatyhefu ingako ingcono kwaye ikhuselekile kwimveliso.

⑤ Ixabiso.

4、Ukukhethwa kweModifier

Isiphumo se-modifier kukuphucula ukurhawuzelelwa kwesikhumba, ukumelana nokucheba, ukumelana nokugoba, ukumelana neempembelelo kunye nokusebenza kobushushu be-epoxy resin.

(1) Iziguquli eziqhelekileyo kunye neempawu

① Irabha yePolysulfide: iphucula amandla okuchasana kunye nokumelana nokuxobuka;

② I-polyamide resin: iphucula ubuqhophololo kunye nokunamathela;

③ I-Polyvinyl alcohol TERT butyraldehyde: iphucula ukumelana nefuthe lokutshiswa kwesikhumba;

④ NBR: kuphucula ukumelana nokutshiswa kwesikhumba;

⑤ I-resin ye-phenolic: iphucula ukumelana nobushushu kunye nokumelana nokugqwala;

⑥ I-resin ye-polyester: iphucula ukumelana nokutshiswa kwesikhumba;

⑦ I-urea formaldehyde melamine resin: yonyusa ukumelana neekhemikhali kunye namandla;

⑧ I-resin ye-Furfural: iphucula ukusebenza kokugoba okungashukumiyo, iphucula ukumelana ne-asidi;

⑨ I-vinyl resin: iphucula ukumelana nokuxobuka kunye namandla okuchaphaza;

⑩ Isocyanate: inciphisa ukungena kwamanzi kwaye yonyusa ukumelana namanzi;

11 I-Silicone: iphucula ukumelana nobushushu.

(2) Idosi

① Irabha yePolysulfide: 50-300% (ene-arhente yokunyanga);

② I-polyamide resin kunye ne-phenolic resin: 50-100%;

③ I-resin ye-polyester: 20-30% (ngaphandle kwe-ejenti yokunyanga, okanye inani elincinci le-ejenti yokunyanga ukukhawulezisa ukusabela.

Ngokubanzi, xa kusetyenziswa i-modifier eninzi, kokukhona kuguquguquka okukhulu, kodwa ubushushu bokuguqulwa kobushushu beemveliso ze-resin buyehla ngokufanelekileyo. Ukuze kuphuculwe ukuguquguquka kwe-resin, kusetyenziswa izinto zokuqinisa ezifana ne-dibutyl phthalate okanye i-dioctyl phthalate.

5、Ukukhethwa kweeFillers

Umsebenzi wezizalisi kukuphucula ezinye iipropati zeemveliso kunye neemeko zokusasaza ubushushu xa kucutshungulwa i-resin. Inganciphisa nobungakanani be-epoxy resin kwaye inciphise iindleko. Izizalisi ezahlukeneyo zingasetyenziselwa iinjongo ezahlukeneyo. Kufuneka zibe ngaphantsi kwe-100 mesh, kwaye umthamo uxhomekeke ekusetyenzisweni kwayo. Izizalisi eziqhelekileyo zezi zilandelayo:

(1) Ifayibha ye-asbestos kunye nefayibha yeglasi: yonyusa ukuqina kunye nokumelana nempembelelo;

(2) Umgubo weQuartz, umgubo weporcelain, umgubo wesinyithi, isamente, i-emery: yonyusa ubulukhuni;

(3) Umgubo we-Alumina kunye ne-porcelain: ukwandisa amandla okuncamathelisa kunye namandla oomatshini;

(4) Umgubo we-asbestos, umgubo wejeli ye-silica kunye nesamente enobushushu obuphezulu: kuphucula ukumelana nobushushu;

(5) Umgubo we-asbestos, umgubo we-quartz kunye nomgubo wamatye: kunciphisa izinga lokuncipha;

(6) Umgubo we-aluminiyam, umgubo wekopolo, umgubo wesinyithi kunye neminye imigubo yesinyithi: ukwandisa ukuhanjiswa kobushushu kunye nokuhanjiswa kombane;

(7) Umgubo weGraphite, umgubo wetalc kunye nomgubo wequartz: ukuphucula ukusebenza kokungagugi kunye nokusebenza kokuthambisa;

(8) I-Emery kunye nezinye izinto zokubrasha: ziphucula ukusebenza kokungagugi;

(9) Umgubo weMica, umgubo weporcelain kunye nomgubo we-quartz: ukwandisa ukusebenza kobushushu;

(10) Zonke iintlobo zeepigment kunye negrafiti: ngombala;

Ukongeza, ngokwedatha, isixa esifanelekileyo (27-35%) se-P, As, Sb, Bi, Ge, Sn kunye ne-Pb oxides ezongezwe kwi-resin zinokugcina ukunamathela phantsi kobushushu obuphezulu kunye noxinzelelo.

6、Ukukhethwa kweDiluent

Umsebenzi we-diluent kukunciphisa i-viscosity kunye nokuphucula ukuvuleka kwe-resin. Ingahlulwahlulwa ibe ziindidi ezimbini ezingasebenziyo nezingasebenziyo, kwaye ubungakanani ngokubanzi abudluli kwi-30%. Ii-diluents eziqhelekileyo ziquka i-diglycidyl ether, i-polyglycidyl ether, i-propylene oxide butyl ether, i-propylene oxide phenyl ether, i-dicyclopropane ethyl ether, i-triethoxypropane propyl ether, i-inert diluent, i-xylene, i-toluene, i-acetone, njl.

7、Iimfuno zezinto eziphathekayo

Ngaphambi kokongeza i-ejenti yokunyanga, zonke izinto ezisetyenzisiweyo, ezifana ne-resin, i-ejenti yokunyanga, i-filler, i-modifier, i-diluent, njl.njl., kufuneka zihlolwe, eziya kuhlangabezana neemfuno ezilandelayo:

(1) Akukho manzi: izinto ezinamanzi maziqale zomiswe, kwaye izinyibilikisi ezinamanzi amancinci mazisetyenziswe kancinci kangangoko.

(2) Ubumsulwa: umxholo wokungcola ngaphandle kwamanzi kufuneka ube ngaphantsi kwe-1%. Nangona ingasetyenziswa kunye nokungcola okuphakathi kwe-5%-25%, ipesenti yezinye izinto kwifomyula kufuneka inyuswe. Kungcono ukusebenzisa udidi lwe-reagent ngobuninzi obuncinci.

(3) Ixesha Lokusebenza: Kubalulekile ukwazi ukuba ezi zinto azisebenzi na.