Yuav ua li cas txhim khu kev qha cov kua nplaum pob qij txha?

Teb ntawm daim ntawv thov ntawm cov nplaum yog varied, nws yog siv nyob rau hauv manufacturing, kev tsim kho, kho thiab modeling. Adhesive tebchaw yog siv nyob rau hauv lub rooj sib txoos txheej txheem nyob rau theem ntawm installation ntawm lug thiab cov ntaub ntawv. Feem ntau lo siv nyob rau hauv daim ntawv kev lag luam thiab ntoo ua.

Thoob plaws hauv nws cov keeb kwm, adhesives thiab mixtures hloov. Tsaug rau niaj hnub siv tshuab los tshwm adhesives raws li ntawm cov khoom cua resins muaj peev xwm ntawm cov kua nplaum cov ntaub ntawv thiab tej chaw. Synthetic adhesives muaj siab elasticity, waterproofing thiab sealing tebchaw raws li kom lawv ntev kev pab cuam lub neej. Ib qho piv txwv ntawm kev siv ntawm cov khoom cua adhesives yuav ntshai li assembling PVC yeeb nkab los ntawm nplaum tsevneeg los yog kev siv ntawm cov khoom cua nplaum mixtures rau kho thiab hloov cov cuab yeej (nrog kua nplaum kho yokes seating chaw thiab Certificate).

Lub ntsiab kom zoo dua yog lub siab cia siab rau ntawm nplaum kev twb kev txuas ntawm ntau qhov chaw thiab tej chaw, yog tiav tsis undue ntxim rau cov yam ntxwv hais (drilling, phaj, vuam).

Yuav ua li cas yog cov kua nplaum thiab lo pob qij txha?

Cov nplaum yog ib tug sib tov los yog ib tug multi-tivthaiv muaj pes tsawg leeg siv mus txuas rau ntau yam constructional ntsiab thiab cov ntaub ntawv. Adhesive compound unreleasable, check daim ntawv cog lus yog tsim nrog lub coupling chaw ntawm lub nplaum txheej. Adhesives yog txawv nyob rau hauv muaj pes tsawg leeg. Lub compositions yog muaj li ntawm organic thiab inorganic polymers. Lub hauv paus ntawm lub nplaum muaj pes tsawg leeg yog txwv kom muab zais:

• kub curing polymers;
• txias-curing polymers;
• thaum tshav kub kub resistant polymers;
• thermosetting thiab thermoplastic polymers;
• polymers siv nyob rau hauv lub cev kub ntau.

Cov kev loj hlob ntawm ntau lawm technology thiab polymer Science News for KIDS muab lub peev xwm los tsim compositions uas muab muaj zog nplaum bonds ntaub ntawv uas nws chaw yog tsis tau yielded ib tug khoom coupling ntawm hlau, tej hub los yog iav. Tsis tas li ntawd lub polymer puag nyob rau hauv lub nplaum muaj pes tsawg leeg muaj xws li ntau yam additives impart cov yam thaj chaw ntawm lub nplaum interlayer thiab cov yam ntxwv (thaum tshav kub kub kuj, ya raws kuj, lub dag lub zog, ductility, thiab hais txog. D.). tshwj xeeb lub hom phiaj additives tej zaum yuav: tua kab mob, cov kuab tshuaj, colorants, plasticizers, thiab lwm yam fillers.

Zoo yam ntxwv thiab nplaum thaj chaw ntawm lub tebchaw nyob ntawm seb cov kev xaiv ntawm nplaum thiab nruj mas tsevneeg technology.

Av nplaum: lub tej yam kev mob txiav txim cov kev xaiv

Nyob rau hauv xaiv ib tug nplaum luag hauj lwm loj ua si los ntawm cov khoom thiab cov yam ntxwv ntawm cov khoom npaj rau tsevneeg, tej yam kev mob ntawm hauj lwm (humidity, kub), kwv yees li lub neej ntawm cov nplaum daim ntawv cog lus thiab cov load rau nws. Thaum koj xaiv ib lub nplaum yuav tsum xyuam xim rau cov nqi ntawm kev ntxuav tu cov kev xaiv, flammability. Ib tug feature ntawm tag nrho cov nplaum sib txuas yog lub deterioration ntawm adhesion nrog lub lapse ntawm lub sij hawm, yog li ntawd, thaum lub sij hawm tag nrho lub sij hawm ntawm lub lag luam puas lawm nplaum daim ntawv cog lus.

Cov poob nyob rau hauv interlayer nplaum zog thiab yooj yog vim yog tej yam uas kub thiab txias hloov mus hloov los, humidity, thiab lwm yam tej yam kev mob. Yog li, ua ntej rau tsevneeg ntawm lub tsev qauv, tsab xov xwm los yog cov txheej txheem PVC yeeb nkab, nplaum tsevneeg sib kuaj durability nyob rau hauv tus ntawm lub pob operating tej yam kev mob.

General technology ntawm tsevneeg chaw

Bonding txheej txheem yuav qhov kev npaj ntawm qhov chaw, lub tov ntawm lub nplaum muaj pes tsawg leeg Cheebtsam (yog tias yuav tsum tau), ib tug nyias txheej ntawm nplaum yog thov mus rau qhov chaw thiab tos kom txog thaum tau txais daim ntawv ntawm ib tug nruj heev coupling. Ib tug ntawm cov tseem ceeb tshaj plaws cov kauj ruam no yog los npaj cov hniav yuav tsum tau sib raug zoo, qhov no saib kuas pom coupling. Thaum ua ntawv thov cov kua nplaum rau ntawm qhov chaw yuav tsum xyuam xim rau cov sufficiency ntawm cov zaj duab xis thickness. Cov los ua ke yog ua tiav los ntawm tua nplaum pob qij txha ntawm nplaum, uas yuav tsum tau muab qhov chaw nyob rau hauv lub zoo txheej txheem tej yam kev mob.

Cov kev npaj nto kev kho mob kauj ruam tshem tawm tej kab mob sib kis, tshwj xeeb kev daws teeb meem degreased nto, lawv yog roughened. Qhov zoo tshaj plaws hom rau qhov kev npaj ntawm cov chaw nyob rau hauv uas markedly cohesive tsis ua hauj lwm (kev puas tsuaj ntawm astringent txheej) ntawm nplaum pob qij txha. Rau kho cov tsevneeg chaw siv ob qho tib si tshuaj thiab txhua yam txoj kev ntawm kev txhim kho cov daim ntawv cog lus lub zog.

Cov kev ntawm daim ntawv thov ntawm cov nplaum txheej rau ntawm qhov chaw zoo tshaj ntawm cov nplaum ob leeg nyob. Cov nplaum yuav tsum tau uniformly faib nyob rau hauv lub qhov chaw, cov zaj duab xis thickness yuav tsum niaj hnub zoo li thiab yuav nyob rau hauv lub chav 0.1 rau 0.2 hli. Txoj kev lo daim ntawv thov nyob rau hauv lub viscosity ntawm muaj pes tsawg leeg.

Piv txwv li, xav txog cov kev xaiv ntawm nplaum thiab cov mounting nplaum technology txheej txheem dej system muaj PVC yeeb nkab.

Qhov kev xaiv ntawm cov nplaum rau cov PVC kav

Yeeb Nkab nyob rau hauv lub nplaum tsevneeg ntawm PVC yog siv nyob rau hauv engineering kev pab rau qhov kev siv ntawm cov dej haus systems, yog siv nyob rau hauv cov cua kub systems thiab sewers. Muaj ntau ntau technologies kev twb kev txuas PVC yeeb nkab thiab fittings. Feem ntau cov feem ntau siv diffusion welding, txawm li cas los, yog heev nrov thiab tsevneeg technology yeeb nkab fittings, raws li kuj achieves siab tsevneeg lub zog.

Siv rau tsevneeg PVC kav adhesives comprise ib lub ntsiab tivthaiv polyvinyl tshuaj dawb, uas yog diluted nrog solvent kom muab tau cov kev kawm taub hau. Cov nplaum muaj pes tsawg leeg yuav ntxiv muaj ntau yam additives thiab cam uas txhim khu lub nplaum waterproofing thiab airtight muaj peev xwm. Lub cev adhesion txheej txheem muaj ua ntawv thov cov nplaum muaj pes tsawg leeg rau ntawm qhov chaw ntawm cov khoom yog ua ntau tshaj ntawm nws, lub kuab yog evaporated nrog rau cov zaj uas lub sij hawm, ib tug muaj zog nplaum daim ntawv cog lus yog tsim. Siv PVC nplaum muab muaj zog coupling chaw ntawm lub molecular theem.

Yuav kom xaiv tau qhov zoo nplaum muaj pes tsawg leeg rau PVC kav, xav txog cov nram no:

• kom meej meej paub dab tsi lub hom phiaj lub nplaum no mas yuav kis;
• ib qho tseem ceeb mus ntsib nrog rau cov nplaum npaj technology, polyvinyl tshuaj dawb raws li adhesives tej zaum yuav muaj li ntawm ob lub Cheebtsam, ib tug ncaj qha cawv rau tsevneeg lub zog;
• qhov chaw kawm tus nqi, uas nyob rau hauv feem ntau ntawm cov compositions tsis pub tshaj 1-2 feeb (nyob ntawm seb cov av noo thiab kub);
• adhesives rau PVC kav muaj ib tug txawv xim;
• lub viscosity ntawm cov xim muaj hlau muaj pes tsawg leeg.

PVC Technology mounting hlab nplaum txhais tau tias

Cov nplaum tov yog meej tov. Yog hais tias qhov yooj yim Cheebtsam yuav tsum tau txuas rau lawv tus kheej, nws yog ib qho tseem ceeb mus saib qhov tseeb proportions. Tube rau nplaum tsevneeg yog npaj nyob rau qhov chaw sib nplaum ua tu thiab degreasing qhov chaw. Mounting pib nrog rau daim ntawv thov ntawm nplaum rau lub tsevneeg chaw. Cov nplaum yog thov siv ib tug txhuam hniav nrog ib tug teeb tis dua lub nto ntawm zaj duab xis yog tsis tso cai thiab kev ncua discontinuous ib tug neeg qhov chaw. Thaum kawm tiav ntawm qhov chaw tso zis txheej txheem nplaum tov, yeeb nkab ya yog kawm raws li lub haum.

Tom qab kawm tuab si lug ntawm cov yeeb nkab thiab cov haum, nplaum tsevneeg yuav tsum tau rigidly tsau rau 15-20 vib nas this, tom qab uas lub tsim nplaum coupling thiab thawj zaug nplaum thickens. Nws yog ib qho tseem ceeb kom paub tseeb tias cov qauv yog tsau nyob rau hauv qhov tseeb txoj hauj lwm ua ntej tsevneeg, txij li thaum cranking los yog lwm yam teebmeem yog tsis tau tso cai. Adhesive tsevneeg yuav tsum nyob twj ywm ntawm so rau 15 feeb qhuav lub kuab.

Ib tug successive tsevneeg tag nrho cov kais seem ntawm ib tug system muaj PVC kav thiab fittings. Adhesive tsevneeg tom qab 24 teev los ntawm qhov tus kawm tiav ntawm lub installation yog kuaj rau ceev ceev thiab durability nyob rau hauv ib tug load ntawm dej siab.

Cov ntseeg ntawm nplaum pob qij txha

Cov uas yuav tsum tau hais txog cov kev cia siab rau ntawm nplaum pob qij txha yog hais, nyob ntawm seb cov yam ntxwv ntawm cov sib raug zoo cov ntaub ntawv thiab khiav hauj lwm tej yam kev mob compound. Txawm li cas los, muaj ib co universal tsis, uas yuav tsum tau ua raws li nrog rau tej compound.

Basic yam ntxwv muaj kev cia siab rau tag nrho cov hom ntawm nplaum tebchaw:

• niaj hnub zoo li lub zog adherend nrog lub nplaum compound;
• monolithic glued nrog nplaum hlaws ntsiab;
• kuj nplaum bonds thiab nto zoo indicators, As txiav txim durability thiab kev cia siab.

Lub ntsiab kos npe rau ntawm lub ntseeg ntawm lub nplaum ob leeg yog muab ib tug daim ntawv cog lus lub zog sib npaug zos los yog superior zog monolithic ib feem adherend. Kev ntseeg tau kev nplaum compound raws li nyob rau hauv kev khiav hauj lwm cov yam ntxwv, tej zaum yuav:

• dej kuj: Lub peev xwm ntawm lub nplaum interlayer los kom tiv thaiv puas tsuaj ntawm cov dej;
• Thaum tshav kub kub stability: muaj peev xwm kom lub nplaum daim ntawv cog lus lub zog, ntseeg thiab resilience nyob rau hauv siab kub;
• lom stability: lub peev xwm ntawm lub nplaum txheej thiab tag nrho cov kev sib txuas khaws cia rau lub thawj zog nyob rau hauv tus ntawm puas lom dab.

Qhov zoo ntawm cov pob qij txha nplaum

Kev siv cov nplaum mixtures raws li ntawm cov khoom cua polymers thiab qhuav ho txhab cheeb tsam ntawm qhov kev siv ntawm yas. Synthetic nplaum, uas tov (molten) polymer muaj pes tsawg leeg yog ib yam khoom ntawm ua ntawm yas. Lub ntsiab kom zoo dua ntawm cov khoom cua nplaum tsevneeg - khaws cia rau hauv lub cev thiab aesthetic tsis muaj ntaub ntawv yuav tsum tau sib raug zoo. Txhim khu kev qha kev twb kev txuas cov chaw tshaj loj qhov chaw muab ib tug polymer adhesives. Adhesive compound los ntawm lub polymer compositions ntse siv rau coupling ntawm chaw loj loj thiab rau qhov chaw tsevneeg me me yam ntxwv hais.

9 Yog vim li cas xaiv tsevneeg

1. Adhesives muaj peev xwm ntawm txoj kev muaj zog pob qij txha ntawm cov ntaub ntawv muaj ntau lub zog thiab qhov ntev. Bonding technology yog superior rau ib tug xov tooj ntawm lwm yam technologies, xws li welding, txij thaum lub peev xwm mus cuag lub teeb-gage ntsiab thiab nkig cov ntaub ntawv.
2. Bonding tso cai rau koj mus tusyees faib kev nyuaj siab tshaj tag nrho saum npoo, nws yog ib qhov nyuaj mus cuag siv ib tug welded los yog riveted pob qij txha. Siv welded thiab riveted pob qij txha yus siab concentration ntawm taw tes kev nyuaj siab xwb nyob rau hauv qhov chaw coupler.
3. Adhesive sib txuas muab kev kub ceev los ua ke designs, yog li yus efficiency. Bonding technology yog universal thiab yuav hloov ob peb txoj kev ntawm combining lub ntsiab.
4. Cov tsim ntau lawm technology thiab ib tug ntau yam ntawm nplaum mixtures tso cai lawv siv hauv ntau theem ntawm cov ntau lawm txheej txheem.
5. Tus nqi ntawm lub nplaum daim ntawv cog lus muaj zog thiab feem ntau tshaj cov coj nuj nqis ntawm lwm embodiments compound lug thiab hais. Tebchaw ua siv kua nplaum, muaj tsawg hnyav nyob rau hauv kev sib piv nrog welded los yog riveted sib txuas.
6. Adhesive ntaub ntawv muaj ib tug tshwj xeeb muaj peev xwm mus nqus, tis thiab hloov lwm lub tsev txhawj xeeb thoob plaws lub dav hlau ntawm qhov kev siv cov ntsiab. Elasticity thiab deformation muaj peev xwm ntawm cov nplaum txheej tsub kom lub ntseeg ntawm connectors.
7. Cov nplaum yuav ntse muab cov ntaub ntawv thiab hais tias yog nkag mus ua cua sov, uas muaj peev xwm lov los yog deform nyob rau hauv qhov kev txiav txim ntawm tshav kub.
8. Cov nplaum tau ua raws li ib tug sealing cov ntaub ntawv uas, muab tsis tau tsuas yog ib tug txhim khu kev qha kev twb kev txuas qauv, tab sis lub zoo kuj ntawm lub ua los ntawm dej thiab tshuaj reagents. Adhesive pob qij txha yog cov zoo insulate cua sov thiab lub suab yog kev zoo heev insulators.
9. Muaj ib tug xov tooj ntawm nplaum compositions tsim nyuaj tej yam kev mob, nrog rau lawv cov kev pab tau tshwj xeeb yog txhim khu kev qha cov kua nplaum pob qij txha. Cov kev siv tshwj xeeb lo formulations enables kev tsim kho thiab hais tsis muaj cua sov cov khoom thaum uas tsis muaj kub thiab high av noo.

Tsis zoo ntawm cov pob qij txha nplaum

Lub ntsiab disadvantages ntawm nplaum tebchaw, nyob rau hauv particular tau siv hluavtaws adhesives, nws yog ib lub impossibility ntawm lawv cov kev siv nyob rau hauv yeem thiab tsis tshua muaj neeg hnyav tej kev kawm.

Tebchaw ntawm lug los ntawm txoj kev lo yuav tsum tau siab precision thiab cov theem tswj lawv tua. Cov neeg txawj tsim nyog los saib xyuas lub ciaj ciam thiab hom ntawm tsevneeg ntawm adhering nplaum tua technology thiab tsim so thaum lub sij hawm tsim ntawm lub coupler. Xyuas lub tebchaw tau, cov kws muaj txuj tsis yog ib txwm paub tus tau tsevneeg tsis xws luag.

Rau ntau industrial adhesives technology hardening txheej txheem yuav siv cov cua kub hais. Bonding kub-feem ntau tsis tau ua thaum txuas seem complex lug.

Yuav ua li cas yog ib qho tseem ceeb kom paub, xav tias cov kua nplaum pob qij txha?

1. Tag nrho tsevneeg yees yuav tsum tau ib txhij txhua multistage nto kev kho mob, uas ho complicates tus txheej txheem. Tus txheej txheem ntawm tua cov nplaum daim ntawv cog lus yuav tsum tau muaj nyob rau hauv ib tug tej yam av noo tej yam kev mob, kev tswj qhov siab thiab kub tej yam kev mob. Nyob rau hauv tas li ntawd, kom ruaj khov lub sij hawm yuav ua tau lub sij hawm siv. Rau tej hom uas muaj adhesives tsevneeg yog ua nyob rau hauv kauj ruam cua sov rau cov nplaum kev twb kev txuas.
2. Adhesive compound tsim kom zoo zoo, tus tsom xam ua los ntawm cov kws tshwj xeeb Tensile thiab tshwv loads yog xam voltages sawv vim ib qho txawv nyob rau hauv thermal expansion coefficient thiab cov tsevneeg dav hlau ntawm lub nplaum ob leeg.
3. Adhesive pob qij txha, nyob rau hauv cov kev phem ntawm nws zoo zog, muaj ib tug tseem ceeb drawback - cov neeg pluag thaum tshav kub kub kuj. Kev siv cov adhesives rau los ua ke siv muaj kev txwv rau cov ntaub ntawv ntawm kev khiav hauj lwm cov qauv ntawm tsa kub. Nyob rau hauv tas li ntawd, muaj ntau yam ntawm nplaum pob qij txha yuav tawg nyob rau hauv tus ntawm cov neeg kho tshuab poob siab.
4. Nta ntawm tsevneeg ntsiab ua rau nws tsis yooj yim sua rau siab tswj qhov zoo ntawm cov kev twb kev txuas.
5. Lub tebchaw tau los ntawm tsevneeg, yog non-separable, rau qhov no yog vim li cas, txoj kev siv cov nplaum complicates lub disassembly txheej txheem los yog dismantling Siv. Nyob rau hauv lub tej yam kev mob ntawm intensive kev siv nyob rau hauv hostile ib puag ncig los yog txhav lag luam nws yuav tsis tau los mus laij lub durability ntawm lub nplaum daim ntawv cog lus.