Adhesive kurapa maitiro

Adhesive kurapa maitiro

Nzira yekurapa:

Kurapa kwezvinonamira kunoitwa nemaitiro enyama, senge evaporation yezvinonyungudutsa, emulsion coagulation uye kunyungudika kutonhora, uye nzira dzemakemikari.

• (1) Inonamatira inonyungudika inopisa: Iyo polima inonyunguduka inoomesa nekutonhodza mushure mekunge yanyorovesa pamusoro kuti isungirwe.

(2) Solution adhesive: Sezvo iyo solvent inoputika uye kugadzirisa kugadzirisa kunowedzera, zvishoma nezvishoma inosimba uye ine rimwe simba.

(3) Emulsion adhesive: Sezvo mvura iri mu emulsion inopinda zvishoma nezvishoma mu porous adherend uye inoputika, iyo emulsion concentration inoramba ichiwedzera, uye pakupedzisira nekuda kwekuita kwekunetseka kwepamusoro, iyo polymer colloidal particles inoputika. Kana iyo ambient tembiricha yakakwira, iyo emulsion inonyungudika kuita inoenderera inonamira firimu, nepo kana ambient tembiricha yakadzikira uye tembiricha yekuumba firimu (MFT), firimu chena rinoramba rakanamira rinoumbwa. Emulsion adhesives anonyanya kuve polyvinyl acetate uye copolymers ayo uye acrylic acid copolymers.

(4) Thermosetting adhesives The multifunctional monomers kana prepolymers thermosetting resins vanopinda polymerization reactions. Sezvo huremu hwemamorekuru huchiwedzera, cheni dzemamorekuru dzinoshanduka uye kuyambuka - chinongedzo, ichigadzira gel isingagadzirike kana kusimba kwekutanga. Kurebesa nguva yekurapa uye kuwedzera tembiricha yekurapa mukati mehumwe huwandu hakuna kuenzana, uye kudzikisa tembiricha yekurapa kwakaoma kubhadhara nekurebesa nguva. Nekuti imwe kemikari kuita inoda kuitika pakati pekunamira nepamusoro peiyo adherend, izvi zvinoda tembiricha yakakwira zvakakwana kuti uenderere mberi.

Kurapa pressure:

Inobatsira kuti adhesive ipinde zvakakwana pamusoro; inobatsira pakubvisa low molecular volatiles inogadzirwa neadhesive curing reaction; inobatsira pakubvisa zvinonyungudutsa zvinonyungudutsa zvakasara mumutsetse wekunamatira; inobatsira pakudzora kuwanda kweiyo adhesive layer; zvinonamira zvine high viscosity zvinowanzove zvakakora zvinonamira zvidimbu, uye kugadzirisa kwekurapa kudzvanywa kunodzora ukobvu hwemhando yeadhesive layer.

Mushure mekushandisa glue, regai igare kwechinguva, iyo inonzi pre-curing. Kana iyo viscosity yeglue ichiwedzera, shandisa kudzvanywa kuti uve nechokwadi chekufanana kwehupamhi hweglue layer.

Kurapa tembiricha:

Kana tembiricha yekurapa yakadzikira, muchinjiko - kubatanidza density yeadhesive layer yakadzikira, uye maitiro ekurapa haana kukwana; kana tembiricha yekurapa yakakwira zvakanyanya, zviri nyore kuita kuti glue irasikirwe kana kuita kuti adhesive layer iite brittle, zvichikonzera kuderera kwesimba rekubatanidza. Kupisa kunobatsira kupararira kwemamorekuru pakati pekunamatira uye zvikamu zvakasungwa, izvo zvinogona kubatsira kuumba zvisungo zvemakemikari.

(1) Yakananga kudziyisa nzira muovheni: Shandisa mudziyo unofuridza mweya kuti uve nechokwadi chekufambisa kupisa kwakafanana.

(2) Nzira yekupisa yekunze: Kupisa kunokurumidza kuendeswa mukati meiyo adhesive layer, kupfupisa zvakanyanya nguva yekurapa. Ultrasonic kudziyisa nzira: Inokodzera kupisa kupisa kwe viscoelastic adhesives uye solvent-isina adhesives, asi haina kukodzera thermosetting rigid adhesives.