Nhau dzekambani

1. Relative density/proportion

Hukama density inoreva huwandu hwekambani yemakemikari zvinhu.

Chirevo (reshiyo) inoreva mwero wehuwandu hwehuwandu hwechinhu chemakemikari kune density yemvura.

2. Kupisa kwe vaporization uye coefficient of compression

Kupisa kwe vaporization ivhoriyamu inogarwa negiramu rega rega repurasitiki (cm³/g), uyecompressibilitychiyero chevhoriyamu kana kupisa kwekupisa pakati pe electrostatic poda uye chikamu chepurasitiki (kukosha kwayo kunogara kuchipfuura 1).Zvose zvinogona kushandiswa kujekesa saizi yekamuri yekuburitsa firimu.Iko kukosha kukuru kwehuwandu hwehuwandu hunoti huwandu hwekamuri yekubuda hunofanira kuva huru.Panguva imwecheteyo, inoratidzawo kuti iyo electrostatic poda ine yakawanda yekupomba kwemhepo, iyo pombi yekuburitsa yakaoma, nguva yekuumba yakareba, uye kugadzirwa kwakanaka kwakaderera.Zvakapesana ndezvechokwadi kana kupisa kwe vaporization kuri kudiki, uye kwakanakira kudzvanya nekumisa.

3.Kutorwa kwemvura

Kunyura kwemvura (water absorption) zvinoreva mwero wekugayiwa kwepurasitiki nekutorwa kwemvura.Nzira yekuyera ndeyekutanga kuomesa sampuli uye kuiyera.Mushure mekunyura mumvura kwemazuva makumi maviri nemana kana maviri, bvisa uye uiyera zvakare, uye uverenge chikamu chakawedzerwa kuhuwandu, iyo inotorwa nemvura.sex.

4. Kushanda

Kugona kwepurasitiki kuzadza gomba pasi petembiricha uye kushanda nesimba kunonzi chiitiko.Ndiyo huru parameter yekiyi yekugadzirisa tekinoroji inotariswa kana chitambi chinofa.Inoshanda nyowani iri nyore kuumba yakawandisa kupenya, kuzadza mhango haina dense, zvikamu zvepurasitiki zvakagovaniswa zvakasununguka, epoxy resin uye mafirita anounganidzwa zvakasiyana, zviri nyore kunamatira kune mold, mold ejection uye kupedzisa kwakaoma, hard bottoming inokurumidza uye zvimwe. zvakaipa.Zvisinei, kana chiitiko chacho chiri chiduku, kuzadza kwacho kupfupi, hazvisi nyore kuumba, uye kuumbwa kwekumanikidza kwakakura zvikuru.Nokudaro, basa rekushandisa mapurasitiki rinoenderana nemitemo yezvikamu zvepurasitiki, kuumba maitiro uye kuumba zviyero.

5. Hard bottoming maitiro

Iyo polyurethane elastomer inoshandurwa kuita ductile viscous state pasi pekudziya uye kushushikana panguva yese yekuumba maitiro.Sezvo basa racho richiwedzera, gomba rinozadzwa, uye panguva imwecheteyo, aldol condensation inoitika.Iyo crosslinking density inoramba ichiwedzera, uye chiitiko chacho chinoshanduka.Iwo akazara otomatiki kugadzira muchina unodzikisira uye zvishoma nezvishoma unoomesa zvinhu zvakanyunguduka.Kana kudzvanya molds, kumhanya kwekudzika kwakasimba kunokurumidza, uye zvinhu zvine zvipfupi zvinoramba zvichiitwa zviitwa zvinofanirwa kungwarira kufambisa kudyisa, kurodha uye kurodha zvekuisa, uye kusarudza anobudirira ekugadzira zviyero uye mashandisirwo chaiwo kudzivirira kutanga zvakanyanya kuomarara kana kuoma. bottoming Kushomeka, zvichikonzera kuumbwa kwakashata kwezvikamu zvepurasitiki.

6.Unyoro uye Volatile Organic Compounds

Ese marudzi emapurasitiki ane mazinga akasiyana ehunyoro uye anoputika organic komisheni.Kana yakawandisa, basa racho rinowedzera, zviri nyore kupfachukira, nguva yekutsungirira yakareba, inoderedza kuwedzera, uye zviri nyore kubudisa maitiro emafungu, kuwedzera uye kuputika uye zvimwe zvisingabatsiri uye zvinokuvadza.Mechanical uye magetsi engineering mabasa ezvikamu zvepurasitiki.Nekudaro, kana ipurasitiki iri nyore kwazvo, inokonzeresa kuita kwakashata uye kuoma kuumbwa.Nokudaro, mapurasitiki akasiyana anofanira kupiswa sezvinodiwa.Zviri nyore kupisa zvigadzirwa nekunyura kwakasimba kwemvura, kunyanya mumwaka wekunyorova, kunyangwe kanazvinhu zvinopisainofanira kudziviswa.Kutora unyoro

7.Kunzwa kupisa

Plastiki inotonhora-inopisa inoreva mamwe mapurasitiki anochinjika zvakanyanya pakupisa.Pavanosangana nekupisa pakupisa kwakanyanya, nguva yakarebesa kana kuti chikamu chemuchinjiko chekuvhura kwemafuro idiki.Kana iyo chaiyo mhedzisiro yekucheka yakakura, kuwedzera kwekushisa kwe mold kunogona kukonzera discoloration, depolymerization, uye kupatsanuka.Mapurasitiki ane rudzi urwu rwemaitiro anonzi mapurasitiki anopisa.

8. Kunzwa kwemvura

Mamwe mapurasitiki (akadai sepolycarbonate) anotova nemvura shoma, asi anotsemuka pasi pekushisa kwakanyanya uye kudzvanywa.Iri rudzi rwebasa rinonzi senitivity yemvura, uye iri nyore kuipisa pachine nguva.

9.Kutorwa kwemvura

Plastiki inofungidzira kuti nekuda kwekuti kune zvakasiyana-siyana zvekuwedzera izvo zvinoita kuti zvive nemazinga akasiyana ehukama hwemvura, mapurasitiki anogona kukamurwa kuita mhando mbiri: kunyudza hunyoro, kunamatira kwehunyoro, uye isiri-hygroscopicity uye yakaoma kunamatira kumvura.Zvinofungidzirwa kuti mwando wemukati unodzorwa mukati meiyo inobvumidzwa renji, zvikasadaro mwando unova mhute pasi pekupisa kwakanyanya uye kudzvanywa kwakanyanya kana iyo chaiyo mhedzisiro ye hydrolysis reaction inoitika, izvo zvinozoita kuti epoxy resin ipupume, ideredze basa rayo, uye kushaya chitarisiko uye mechanical uye magetsi engineering mabasa.kugona.Naizvozvo, mapurasitiki anopinza mvura anodziyirwa nenzira dzakakodzera dzekudziya uye zviyero sezvinodiwa, uye yakananga infrared induction inoshandiswa kudzivirira kutorwazve kwehunyoro panguva yekushandiswa.

10.Kufema mweya

Kufema kunoreva basa rekufambisa mhute repurasitiki firimu kana bhodhi repurasitiki

11.Melt index kukosha

Iyo Melt Index (MI) ndiyo yakajairwa kukosha inoratidza chiitiko chepurasitiki zvinhu panguva yekugadzira uye kugadzirisa.

12.Kusimba kwesimba/kutsemuka kurebesa

Kusimba kwesimba zvinoreva huwandu hwesimba rinodiwa kutambanudza zvinhu zvepurasitiki kune imwe nhanho (senge goho rinogumira kana kutsemuka).Iyo inowanzo cherechedzwa nenzvimbo yakazara yebhizinesi rega rega.Uye chikamu chehurefu mushure mekukwevera kureba kune kureba kwepakutanga ndiko kureba kwekutsemuka.

13.Bumpy compressive simba

Simba rekumanikidza remapundu ndiko kugona kwemapurasitiki kuramba mabumps.

14.Impact compressive simba

Impact compressive simba inoreva simba rekinetic iro plastiki inogona kutakura kana yabatwa nekunze kwesimba.

15.Simba

Simba remapurasitiki akajairwa anowanzo kuratidzwa nenzira mbiri dzekuongorora, Rockwell kuomarara uye kuomarara kwaSomo.Munguva iyi, Shao's A yaiwanzoshandiswa kuyera mapurasitiki akapfava, akadai seTPE uye mamwe polyurethane elastomers kana vulcanized rubber, nezvimwewo;Shao's D yaishandiswa kuyera mapurasitiki akaoma, akadai semapurasitiki akazara-chinangwa uye mamwe mapurasitiki einjiniya, uye mazhinji emhando yepamusoro-injiniya Mapurojekiti epurojekiti kana mapurasitiki akaomarara eprojekiti anofanirwa kuyerwa neRockwell.

16.Kupisa kunokanganisa tembiricha

Iyo tembiricha yekukanganisa kupisa ndiyo tembiricha iyo iyo yepurasitiki bvunzo chidimbu inoputika kusvika pamwero pasi pesimba rekushanda uye tembiricha.

17.Kureba kwenguva refu kupisa kwekushisa

Kureba kwenguva refu kwekushisa kwekushisa kunoreva kupikisa kwekushisa kwezvinhu zvepurasitiki mukushandiswa kwenguva refu.

18.Solvent-resistant character

Hunhu hwemushonga unodzivirira kunyungudika hunoreva kushandurwa kwehuremu, vhoriyamu, kusimba kwesimba uye kurebesa kwepurasitiki zvinhu mushure mekunyudzwa muorganic solvent patembiricha kwenguva yakati.Idiki genetic musiyano inoratidza yakanakisa yakaderera Dielectric shanduko.

19.Kuramba kukwegura

Kuramba kuchembera kunoreva kushorwa kwezvinhu zvepurasitiki kune njodzi dzechiedza chezuva, kupisa, mhepo, mhepo uye mvura munzvimbo yekunze yekunze, izvo zvinokonzeresa shanduko huru uye kuparara.

20.Kujeka

Kujeka kunoreva kufambiswa kwechiedza kwemapurasitiki munzvimbo inooneka mwenje.Plastics inogona kupatsanurwa kuita mwenje transmittance, pachena uye opacity zvichienderana nechiyero chekupfuura kwechiedza.

21.kutsetseka

Kupfava (smoothness) zvinoreva mwero wegirazi regirazi rakafanana neicho chemakemikari anogona kudzora chiedza.Kutsvedzerera kwakanaka kunoreva kupenya kwepamusoro pezvinhu zvemakemikari.

22.Iyo insulating layer inoparadza iyo inoshanda voltage

Iri kushanda voltage ye insulating layer kuparadzwa ndiyo magetsi ekushanda ayo anowedzera mutsauko wepamusoro kune chidimbu chekuyedza kusvika pakuparadzwa kwesimba re dielectric, rakakamurwa nekukosha (Kv/mm) kwechinhambwe pakati pema electrode maviri (ukobvu hweiyo dielectric). test piece).

23.kupisa kwekusanganiswa

Kupisa kwekusanganiswa kunonziwo kupisa kwekunyunguduka uye vaporization, iyo kinetic simba rinodiwa pakuumbwa kana kunyunguduka uye crystallization yecrystalline polymer.Ichi chikamu chesimba rekinetic chinoshandiswa kunyungudutsa chimiro checrystalline chepolymer material.Naizvozvo, kana iyo crystalline polymer ichigadziriswa nekuumbwa kwejekiseni, inoda simba rakawanda rekinetic kuti isvike kune chaiyo yekunyungudika tembiricha pane iyo amorphous polymer inogadziriswa nekuumbwa kwejekiseni.Hapana chikonzero chekupisa kwekunyunguduka uye vaporization.

24.kupisa chaiko

Kupisa chaiko ndiko kuwanda kwekupisa kunodiwa kana tembiricha yezvigadzirwa zvebhizinesi ichikwira ne1 degree [J/kg.k].

25.thermal diffusivity

Thermal diffusivity (Thermal diffusivity) zvinoreva mwero wekufungidzirwa kuti tembiricha ichaendeswa mumudziyo.Inonziwo kupisa kwekufambisa coefficient.Kukosha kwayo huwandu hwekupisa (chaiyo kupisa) uye kugayiwa kwezvinhu uye kunyudzwa kunodiwa kana tembiricha yebhizinesi-yemhando yezvigadzirwa zvemhando inokwira ne1 degree.Chiyero chekupisa (kupisa kupisa coefficient) inosarudzwa.Kumanikidza kushanda haina kukuvadza kune thermal diffusion coefficient, asi tembiricha inokuvadza zvakanyanya.