Epoxy Resin

1,Nhanganyaya

Epoxy resin inowanzoshandiswa pamwe chete nekuwedzera. Additives inogona kusarudzwa maererano nekushandiswa kwakasiyana. Zvakajairika zvinowedzera zvinosanganisira Kurapa Agent, Modifier, Filler, Diluent, nezvimwe.

Kurapa mumiririri chinhu chinodiwa chekuwedzera. Kunyangwe iyo epoxy resin inoshandiswa sekunamira, kupeta, kukandwa, kurapa mumiririri kunofanirwa kuwedzerwa, zvikasadaro haigone kurapwa. Nekuda kwezvakasiyana zvinodiwa zvekushandisa uye kuita, kune zvakasiyana zvinodiwa zveepoxy resin, kurapa mumiririri, modhifita, kuzadza, diluent uye zvimwe zvinowedzera.

2,Kusarudzwa kweEpoxy Resin

(1) Sarudza zvinoenderana neAplication

① Kana yakashandiswa seyakanamatira, zviri nani kusarudza resin ine yepakati epoxy kukosha (0.25-0.45);

② Kana yakashandiswa seyakakandwa, zviri nani kusarudza resin ine yakakwira epoxy kukosha (0.40);

③ Kana ichishandiswa sekuvhara, resin ine yakaderera epoxy kukosha (<0.25) inowanzosarudzwa.

(2) Sarudza maererano neMechanical Strength

Simba racho rine hukama nechiyero chekuyambuka. Iyo epoxy kukosha kwakakwira, uye iyo crosslinking degree zvakare yakakwira mushure mekurapa. Iyo epoxy kukosha yakaderera uye iyo crosslinking degree yakaderera mushure mekurapa. Yakasiyana epoxy kukosha ichakonzerawo simba rakasiyana.

① Iyo resin ine yakakwira epoxy kukosha ine simba repamusoro asi ine brittle;

② Resin ine yepakati epoxy kukosha ine simba rakanaka pakupisa uye kwakadzika;

③ Iyo resin ine yakaderera epoxy kukosha ine simba rakashata pakupisa kwakanyanya.

(3) Sarudza maererano neKushanda Zvinodiwa

① Kune avo vasingade kupisa kwakanyanya uye simba, vanogona kusarudza resin ine yakaderera epoxy kukosha iyo inogona kuoma nekukurumidza uye isiri nyore kurasika.

② Kune avo vanoda kupenya kwakanaka uye simba, ivo vanogona kusarudza resin ine yakakwirira epoxy kukosha.

3,Kusarudzwa kweKurapa Agent

(1) Rudzi rweKurapa Mumiririri:

Zvinowanzo kurapa epoxy resin zvinosanganisira aliphatic amine, alicyclic amine, anonhuwirira amine, polyamide, anhydride, resin uye tertiary amine. Uye zvakare, pasi pekukanganisa kwephotoinitiator, UV kana mwenje inogona zvakare kugadzira epoxy resin kurapa. Amine kurapa mumiririri inowanzo shandiswa tembiricha yekamuri kana yakaderera tembiricha kurapa, nepo anhydride uye inonhuhwirira kurapa mumiririri inowanzo shandiswa kupisa kurapa.

(2) Dosage yeKurapa Agent

① Kana amine ichishandiswa semuchinjika mumiririri, inoverengerwa seizvi:

Amine dosage = MG/HN

M = molecular uremu hweamine;

HN = nhamba yehydrogen inoshanda;

G = epoxy kukosha (epoxy yakaenzana pa100 g ye epoxy resin)

Shanduko yekuchinja haisi kupfuura 10-20%. Kana ikarapwa neamine yakawandisa, iyo resin ichava brittle. Kana iyo dosi iri diki zvakanyanya, kurapwa hakuna kukwana.

② Kana anhydride ichishandiswa seye crosslinking agent, inoverengerwa seizvi:

Anhydride dosage = MG (0.6 ~ 1) / 100

M = molecular uremu weanhydride;

G = epoxy value (0.6 ~ 1) ndiyo coefficient yekuedza.

(3) Nheyo yeKusarudza Mumiririri Anorapa

① Zvinodiwa Zvekuita.

Zvimwe zvinoda kupikisa tembiricha yakakwira, zvimwe zvinoda kuchinjika, uye zvimwe zvinoda kumira zvakanaka kwekuora. Yakakodzera kurapa mumiriri inosarudzwa zvinoenderana nezvinodiwa zvakasiyana.

② Kurapa Nzira.

Zvimwe zvigadzirwa hazvigone kupisa, ipapo mumiriri wekurapa wekupisa kupisa haagone kusarudzwa.

③ Nguva yekushandisa.

Iyo inonzi nguva yekushandisa inoreva nguva kubva panguva iyo epoxy resin inowedzerwa nemumiririri wekurapa kusvika panguva iyo isingagone kushandiswa. Kwekushandisa kwenguva refu, anhydrides kana latent kurapa maajenti anowanzo shandiswa.

④ Kuchengetedza.

Kazhinji, mushonga unorapa une muchetura ushoma uri nani uye wakachengeteka pakugadzirwa.

⑤ Mutengo.

4,Sarudzo yeModifier

Mhedzisiro yemodhifita ndeye kuvandudza kutsvuka, kugera kuramba, kukotama kuramba, kukanganisa kupikisa uye kuita kwekudzivirira kwe epoxy resin.

(1) Zvakajairwa Modifiers uye Hunhu

① Polysulfide rabha: kuvandudza simba rekuita uye kupenengura kuramba;

② Polyamide resin: kunatsiridza brittleness uye kunamatira;

③ Polyvinyl doro TERT butyraldehyde: kunatsiridza maitiro ekupisa kupikisa;

④ NBR: kunatsiridza kukanganiswa kwekupisa;

⑤ Phenolic resin: kunatsiridza tembiricha kuramba uye ngura kuramba;

⑥ Polyester resin: kunatsiridza maitiro ekupisa kuramba;

⑦ Urea formaldehyde melamine resin: kuwedzera kupikisa kwemakemikari uye simba;

⑧ Furfural resin: kunatsiridza iyo static beng performance, kunatsiridza iyo acid kuramba;

⑨ Vinyl resin: kunatsiridza peeling kuramba uye kukanganisa simba;

⑩ Isocyanate: kuderedza kunyorova kwemvura uye kuwedzera kudzivirira kwemvura;

11 Silicone: kunatsiridza kupisa kupisa.

(2) Dose

① Polysulfide rubber: 50-300% (ine kurapa mumiririri);

② Polyamide resin uye phenolic resin: 50-100%;

③ Polyester resin: 20-30% (isina kurapa mumiriri, kana chidimbu chidiki chekurapa mumiriri kuti ikurumidze kuita.

Kazhinji kutaura, iyo yakawanda modifier inoshandiswa, iyo yakakura kuchinjika kuri, asi tembiricha ye deformation yezvigadzirwa zve resin inodzikira zvinoenderana. Kuti uvandudze kuchinjika kweresin, toughening agents senge dibutyl phthalate kana dioctyl phthalate inowanzoshandiswa.

5,Kusarudzwa kweFillers

Basa remafirita nderekuvandudza zvimwe zvivakwa zvezvigadzirwa uye mamiriro ekupisa ekupisa ekurapa resin. Inogona zvakare kuderedza huwandu hweepoxy resin uye kuderedza mutengo. Mafirita akasiyana anogona kushandiswa kune zvakasiyana zvinangwa. Inofanira kunge iri pasi pe100 mesh, uye chiyero chinoenderana nekushandiswa kwayo. Iwo akajairika fillers ndeaya anotevera:

(1) Asbestos faibha uye girazi faibha: kuwedzera kuomarara uye kukanganisa kuramba;

(2) Quartz powder, porcelain powder, iron powder, simende, emery: kuwedzera kuoma;

(3) Alumina uye porcelain powder: kuwedzera simba rekunamatira uye simba remagetsi;

(4) Asbestos poda, silica gel poda uye yakakwirira tembiricha simende: kunatsiridza kupisa kupisa;

(5) Asbestos powder, quartz powder uye dombo rebwe: kuderedza shrinkage rate;

(6) Aluminium poda, hupfu hwemhangura, hupfu hwesimbi uye humwe hupfu hwesimbi: kuwedzera kupisa conductivity uye conductivity;

(7) Graphite poda, talc poda uye quartz poda: kuvandudza maitiro ekurwisa-kupfeka uye kuita kwemafuta;

(8) Emery uye mamwe mabrasives: kunatsiridza iyo anti-kupfeka kuita;

(9) Mica poda, porcelain poda uye quartz powder: kuwedzera kushandiswa kwekudzivirira;

(10) Mhando dzose dzepigment uye graphite: ine ruvara;

Mukuwedzera, maererano nemashoko, chiyero chakakodzera (27-35%) cheP, As, Sb, Bi, Ge, Sn uye Pb oxides yakawedzerwa mu resin inogona kuchengetedza kusungirirwa pasi pekupisa kukuru uye kudzvinyirira.

6,Kusarudzwa kweDiluent

Basa re diluent ndere kuderedza viscosity uye kuvandudza permeability ye resin. Inogona kukamurwa kuita inert uye inoshanda mapoka maviri, uye iyo mari kazhinji haisi kupfuura 30%. Kazhinji diluents zvinosanganisira diglycidyl ether, polyglycidyl ether, propylene oxide butyl ether, propylene oxide phenyl ether, dicyclopropane ethyl ether, triethoxypropane propyl ether, inert diluent, xylene, toluene, acetone, nezvimwewo.

7,Zvinhu Zvinodiwa

Usati wawedzera kurapa mumiririri, zvese zvinoshandiswa, senge resin, kurapa mumiriri, filler, modifier, diluent, nezvimwe, zvinofanirwa kuongororwa, izvo zvinozadzisa zvinotevera zvinodiwa:

(1) Hapana mvura: zvinhu zvine mvura zvinofanira kutanga zvaomeswa, uye zvinonyungudutsa zvine mvura shoma zvinofanira kushandiswa zvishoma sezvinobvira.

(2) Kuchena: zviri mukati metsvina kunze kwemvura zvinofanirwa kunge zvisingasviki 1%. Kunyangwe ichigona zvakare kushandiswa ne5% -25% tsvina, zvimwe zvezvinhu 'muzana mufomula zvinofanira kuwedzerwa. Zviri nani kushandisa reagent giredhi mune shoma shoma.

(3) Nguva yeKushanda: Izvo zvinodiwa kuti uzive kana zvinhu zvacho zvisiri izvo.