Maitiro ekumashure
Upfu hwerabha hunodzokororwa hupfu hwakasimba huchena hunogadziriswa nekupfapfaidza nekuomesa latex chaiyo. Hunonyanya kushandiswa sechinhu chakakosha che "chiuru chemunyu chakasanganiswa" uye zvimwe zvinhu zvemunyu zvakasanganiswa nemafuta zvekugadzira zvinhu zvekugadzira zvekugadzira madziro. . Upfu hwerabha hunoshandiswa zvakanyanya i copolymer yevinyl acetate, inova upfu huchena hunogona kutsvedza zvakasununguka uye hunogona kuparadzirwa zvakanaka mumvura kuti hugadzire emulsion yakagadzikana ine mashandiro akafanana nelatex yekutanga. Sechinhu chinodiwa muzvigadzirwa zvemunyu zvakasanganiswa nemafuta, upfu hwerabha hunodzokororwa hunoita basa rakakosha musimbi yakasanganiswa nemafuta. Hunogona kuvandudza simba rekubatana uye kubatana kwezvinhu. Kuvandudza simba rekukotama uye simba reflexural rezvinhu. Kuvandudza kuramba kwechando-kunyunguduka kwezvinhu. Kuvandudza kuramba kwemamiriro ekunze, kugara kwenguva refu, kuramba kupfeka kwezvinhu. Kuvandudza hydrophobicity yezvinhu uye kuderedza kunyudzwa kwemvura. Kuvandudza kushanda uye kuderedza kupwanyika kwezvinhu. Inogona kudzivirira zvinobudirira kutsemuka. (I) Kuvandudza simba rekubatanidza uye kubatana
Muzvigadzirwa zvemortar yesimbi yakaoma, zvakakosha zvikuru kuwedzera upfu hwerabha hunozonyungudika. Zviri pachena kuti zvinhu zvinosimbisa kusimba kwekubatana uye kubatana kwezvinhu. Izvi zvinokonzerwa nekupinza kwepolymer particles muma pores uye capillaries e cement matrix, uye mhedzisiro yekusimba kwakanaka kwekubatana mushure mekunyoroveswa nesimende. Nekuda kwekunamatira kwakanaka kwe polymer resin pachayo, inogona kuvandudza kunamira kwezvigadzirwa zvemortar yesimbi kune substrates, kunyanya kubatana kwe inorganic binders dzakadai se cement kune organic substrates dzakadai sehuni, fiber, PWC, uye PS. Kuvandudzwa kwekushanda zvisina kunaka kune mhedzisiro iri pachena.
Kuvandudzwa kwekukotama uye kuramba kusimba
Mumapfupa akaomarara anoumbwa mushure mekunge simende yanyorova, firimu repolymer rinonamira uye rakasimba, uye rinoshanda sechisungo chinofambiswa pakati pezvikamu zvesimende, chinogona kutsungirira mitoro yakakwira uye kuderedza kushushikana. Kudzivirira kusimba nekukotama kwakavandudzwa
Kuvandudza kuramba kukanganiswa
Upfu hwelatex hunonyungudika zvakare ipurasitiki inogadzirwa nethermoplastic resin. Firimu rakapfava rakaputirwa pamusoro pezvidimbu zvemortar rinogona kunyudza simba rekunze uye rozorora pasina kutyoka, nokudaro richivandudza kuramba kwemortar.
Kuvandudza kusava nehanya nemvura uye kuderedza kunyudzwa kwemvura
Kuwedzera upfu hwelatex hunonyungudika kunogona kuvandudza chimiro chemota yesimbi. Polymer yayo inoita network isingadzoreki panguva yekunyoroveswa kwesimbi, inovhara capillary iri mugel yesimbi, inovhara kunyudzwa kwemvura, inodzivirira kupinda kwemvura, uye inovandudza kusapinda kwemvura.
Kuvandudza kuramba kwekupfeka uye kugara kwenguva refu
Kuwedzera upfu hwerabha hunonyungudika hwe 휘 kunogona kuwedzera kuomarara pakati pezvikamu zvesimbi zvesimbi nefirimu repolymer. Kuwedzerwa kwesimba rekubatana kunovandudza kugona kwesimbi kutsungirira kumanikidzwa kwesimbi, kunoderedza mwero wekupfekwa, kunovandudza kuramba kwekupfekwa, uye kunowedzera hupenyu hwesimbi.
Kuvandudza kugadzikana kwechando nekunyunguduka uye kudzivirira zvinobudirira kutsemuka kwezvinhu
Upfu hwelatex hunodzokororwa, hunhu hwepurasitiki hweresin yayo yethermoplastic hunogona kukunda kukuvara kunokonzerwa nekuwedzera kwekupisa uye kupfupika kwechinhu chemota yesimende kunokonzerwa nekuchinja kwemusiyano wekupisa. Kukunda zvikanganiso zvemota yesimende iri nyore, zvakaita sekuoma kukuru uye kutsemuka kuri nyore, zvinogona kuita kuti chinhu chacho chive chinochinjika, nokudaro zvichivandudza kugadzikana kwenguva refu kwechinhu chacho. Zvisinei, kune mamwe matambudziko mukugadzirwa kweupfu hwelatex hunodzokororwa muunyanzvi hwekare, zvichikonzera kuti zvidimbu zvelatex hazvina kufanana uye zvakanaka zvakakwana, uye kusangana kwemasero kunogona kuitika panguva yekugadzira, kutakurwa uye kuchengetwa. Izvi zvinokanganisa kushandiswa kwayo.
Maitiro aya anogona kuitwa kuburikidza nemhinduro dzehunyanzvi dzinotevera: maitiro ekugadzira upfu hwelatex hunonyungudika zvakare, zvinhu zvinotevera zvakagadzirwa zvichienderana nehuremu hwakabatanidzwa hwepolymer emulsion 72-85%; protective colloid 4-9%; release agent 11-15%; functional additives 0-5%; zvinogadzirwa nenzira inotevera.
a, kugadzirira colloid inodzivirira: mukettle ye reaction, upfu hwe colloid inodzivirira yehuwandu hwe batching hausanganiswi nemvura uye hunodziiswa kuti hugadzirwe kuita glue, uye defoamer inowedzerwa, inodziiswa uye inochengetwa ichidziya kuti igadzire colloid inodzivirira yakajeka, kuitira kuti viscosity isvike 2500as, yakasimba. Zviri mukati zvinosvika 19.5-20.5%.
b. Kugadzirira kupararira: isa colloid inodzivirira yakagadzirwa mukettle yekugadzirira, wobva wawedzera polymer emulsion yehuwandu hwebatching, sanganisa zvakaenzana, wobva wawedzera defoamer wowedzera mvura kuti ugadzirise viscosity kusvika 70-200Mas, uye huwandu hwakasimba hunosvika 39%-42%, huchidziya kusvika 50-55°
C, yekushandisa;
C, kuomesa kwemvura kubva mugore: vhura shongwe yekuomesa yemvura kubva mugore, kana tembiricha yenzvimbo yekuomesa yemvura iri pamusoro peshongwe yekuomesa yemvura kubva mugore yapiswa kusvika 140-150 DEG C, kupararira kwakagadzirwa kunoendeswa kunzvimbo yekuomesa yemvura iri pamusoro peshongwe yekuomesa yemvura uchishandisa sikuruu pombi. Munzvimbo yekuomesa, mvura yekuomesa inoiswa muatomical kuita madonhwe madiki ane dhayamita ye10-100 microns kuburikidza nedhisiki re centrifugal atomization rinomhanya riri muchiteshi chekuomesa. Panguva imwe chete, madonhwe madiki anodziya nekukurumidza nemhepo inoyerera zvakanyanya, uye panguva imwe chete, chinhu chinoburitsa mvura chinowedzerwa mumhepo inoyerera zvakanyanya. , kana madonhwe madiki apiswa kuti abudise viscosity, chinhu chinoburitsa mvura chinonamirwa kumadonhwe madiki nenguva, uye ipapo mvura iri mumadonhwe madiki inobviswa nekukurumidza kuti iome nemhepo inoyerera zvakanyanya kuti igadzire musanganiswa wakasimba wegesi;
d, kutonhora nekuparadzanisa: chengetedza tembiricha yemhepo inobuda mugomba rekuomesa rinopfapfaidza pa79°C-81°C, uye musanganiswa wegasi-solid unotumirwa nekukurumidza kubva mugomba rekuomesa riri pasi pegomba rekuomesa rinopfapfaidza, wozopinzwa mufiriji hombe yebhegi mushure mekutonhora. Hupfu huri mumhepo hunoparadzaniswa uye hupfu hwakaparadzaniswa hunopatsanurwa uye hunosefekwa kuti uwane chigadzirwa chakapedzwa chehupfu hwelatex hwakasanganiswazve. Zvimwe Zvakafanana Wedzera huwandu hwakati hwemvura yakachena zvichienderana nereactor yakachena, simudza tembiricha kusvika pa50°C, vhura nzira yekukurunga, wedzera hupfu hwecolloid hunodzivirira zvichienderana ne25% yehuwandu hwemvura inowedzerwa kureactor, uye maitiro ekuwedzera anofanira kunonoka Wedzera kuti hupfu husaungane mumvura. Usahuwedzere pamadziro erutivi rwereactor. Mushure mekunge kuwedzera kwapera, wedzera defoamer yakaenzana ne1% yehuwandu hwese. Zvinokurudzirwa kushandisa defoamer yakavakirwa pasilicone. Vhara gomba rekudyisa uye pisa kusvika pa95°C. Yakavharirwa kweawa imwe chete, mvura iri mureactor inofanira kugadzirwa kuita guruu rinopenya, risina zvidimbu zvichena, kutora sampu, kuyedza viscosity uye huwandu hwakasimba, zvichida kuti viscosity isvike pa2500as, uye huwandu hwakasimba husvike pa19.5 ~ 20.5%. Wedzera colloid yekudzivirira yakagadzirwa mukettle yekusanganisa, wobva wawedzera polymer emulsion zvakaenzana, sanganisa colloid yekudzivirira ne emulsion zvakaenzana, wobva wawedzera defoamer zvakakodzera, kazhinji yakaenzana neinenge 0.1% yehuwandu hwese, uye defoamer inofanira kushandiswa newe pachako Emulsified silicone disinfectant.
Chinhu chinoburitsa furo, wobva wawedzera mvura kuti ugadzirise viscosity kusvika pa70-200pas, uye huwandu hwakasimba husvike pa39%-42%. Simudza tembiricha kusvika pa5055C. Kuyedza kwekuyedza, kwagadzirira kushandiswa.
Mvura iri mumadonhwe ichaomeswa nekukurumidza nemhepo inoyerera tembiricha yepamusoro, uye ipapo musanganiswa wegasi-solid uchakurumidza kutungamirwa kubva mushongwe yekuomesa, zvichichengetedza tembiricha yemhepo inobuda pamhepo yepasi yemidziyo yekuomesa pa79 ° C -81 ° Co. Musanganiswa wegasi-solid unotungamirirwa kubva kumidziyo yekuomesa. Mushure mekubva, wedzera mhepo yakaoma isina hunyoro ye5°C kuti itonhore, uye hupfu hune mhepo hunopinzwa mufiriji hombe yebhegi, uye hupfu huri mumhepo hunoparadzaniswa nenzira mbiri dzekuparadzanisa dutu uye kuparadzanisa kusefa. , Hupfu hwakaparadzaniswa hunopatsanurwa uye hunosefekwa kuti huwane zvitsuwa zve latex powder zvinokwanisa kunyungudikazve.
Takura 1,000 kg yemvura inopararira ine huwandu hwakasimba hwe42% kuenda kunhare yekuomesa padanho rakati, wobva wawedzera 51 kg yechinhu chinoburitsa mvura zvichienderana nenzira iri pamusoro panguva imwe chete, woomesa nekupfapfaidza woparadzanisa chinhu chakasimba negasi, wobva wawana hupfu hunobuda hwe461 kg nehutete hwakakodzera.
Nguva yekutumira: Kukadzi-27-2023