Sanadihii ugu dambeeyay, adeegsiga balaastigga injineernimada khaaska ah ayaa si tartiib tartiib ah uga dheereeyay millatariga militariga iyo aerospace ee beero badan oo rayid ah, sida gawaarida rakaabka, sida wax soo saarka qalabka, iyo badeecadaha macaamiisha ee dhamaadka. Waxaa ka mid ah, prolyphenylene sulfide (PPS) iyo pps) iyo prorytheitone (peek) waa labo nooc oo ah balaastigga injineernimada khaaska ah oo leh noocyo deg deg ah oo arji ah oo ballaaran.
Peek waa ka sarreeyaa PPS marka loo eego xoogga, adkaanta, iyo heerkulka ugu badan ee shaqeeya. Marka laga hadlayo caabbinta heerkulka sare, iska caabinta heerkulka heerkulka ee 'Peek' waa 50 ° C ka sarreysa kan PPS. Dhanka kale, faa'iidada qiimaha muuqda iyo waxqabadka ka wanaagsan ee wax ka qabashada PPS ayaa si aad ah loo adeegsadaa.
PPS waxay leedahay faa'iidooyinka waxqabadka soo socda:
(1) dib u dhac ku dhaca ololka
Different from PC and PA, PPS pure resin and its glass fiber/mineral powder filled composites can easily achieve V-0 @ 0.8mm or even thinner thickness V-0 flame retardant without adding any flame retardant level. Although PC and PA have cheaper prices and better mechanical strength (especially impact strength) than PPS, the cost of PC and PA composites with halogen-free flame retardant formulations (V-0@0.8mm level) is higher than that of PPS. It will rise sharply, and in many cases even higher than PPS materials with the same mechanical strength.
(2) dareeraha sareeya
Marka laga hadlayo arjiga daboolka buugga xusuus qorka ah, faa'iidadaas ayaa aad uga cadahay ka badan kan PC-ga. Qaddarka dheeriga ah ee sareeya uma saameynayso dareeraha waxyaabaha iyo sababi kara howsha dhibaatooyinka, laakiin sidoo kale sababa dhibaatooyinka sida dusha sare ee saboolka, basaasnimada saboolka, iyo guryaha farsamada liita. Loogu talagalay PPS-ka-scri-crsstalline ee PPS, oo ah mid aad u sarreeya ayaa u muuqda dheecaanka dhalada oo buuxinaya si sahlan 50%. Isla mar ahaantaana, inta lagu gudajiro heerkul heer sare ah oo dhalaalaya oo dhalaalaya iyo ka-fiirsasho hoose oo PP-ga marka la barbar dhigo fiber-ka muraayadaha indhaha iyo ka-saaridda mudista dheer ee mudista mudista ee ugu dambeysay, taas oo ah Waxay sii kordhisaa modulus.
(3) nuugista biyaha ee hooseeya
Faa'iidadaas waxaa inta badan loogu talagalay pA. Marka laga hadlayo dareeraha, PPS aad u buuxay oo PPS waa la isbarbar dhigi karaa; iyo guryaha farsamada, composyada pa oo leh isku mid oo isku buuxiya ayaa xitaa ka badan. Natiijadu waxay tahay in heerka cillada ee alaabada PPS ay sabab u tahay casaan la'aanta biyo-la'aanta ay aad uga yar tahay tan badeecada la mid ah ee xaaladahaas.
(4) Qoraal qaas ah oo bir ah iyo dusha sare ee dusha sare
Iyada oo loo marayo isku-darka caaryada gaarka ah iyo heerkulka cagaha ee macquulka ah, qaybaha caqabadda cagaha ee macquulka ah ayaa waliba soo celin doona dhawaqa la mid ah garaacista birta hoostiisa, oo dusha sare waxay noqon doontaa sidii muraayad oo kale, oo leh muraayad macdan ah.
Peek wuxuu leeyahay guryaha soo socda ee soo socda:
(1) iska caabin kuleyl aad u sarreeya.
Waxaa loo isticmaali karaa muddo dheer 250 ° C, heerkulku wuxuu gaari karaa 300 ° C isla markiiba, oo si dhib yar ayey u dhimaysaa muddo gaaban gudaheeda 400 ° C.
(2) Guryaha farsamada ee aad u fiican iyo xasilloonida cabbir ahaan.
Peek waxay ku ilaalin kartaa xoog sare heerkulka sare. Xoogga foosha ee 200 ° C wali wuu gaari karaa 24 MPA, iyo xoogga foosha iyo xoogga isku-dhafka ah ee 250 ° C ayaa gaari kara 12-13 MPA. Waxay si gaar ah ugu habboon tahay soosaarka alaabada joogtada ah ee heerkulka sare. qaybaha shaqada. Peek waxay leedahay feejignaan sare, xasillooni yar oo jajab ah iyo mid tabar yar oo ballaarinta toosan, oo aad ugu dhow aluminium birta. Intaas waxaa sii dheer, Peek sidoo kale waxay leedahay iska caabbinta wanaagsan, wuxuu u adkeysan karaa walaac weyn inta lagu jiro mudada adeegga, mana u horseedi doonto kordhin weyn kordhinta waqtigaas.
(3) iska caabbinta kiimikada ee wanaagsan.
Peek waxay ka hortagtaa kiimikada intooda badan si fiican, xitaa heerkulka sare, oo leh iska caabbinta jiifka oo la mid ah birta nickel. Xaaladaha caadiga ah, waxa kaliya ee ay kala diri kartaan peet waxay ku urursan tahay sulfuric acid.
(4) Isu-caabbic hydrolysis wanaagsan.
U adkaysata waxyeelada kiimikada ee biyaha ama uumi baxa biyaha sare. Xaaladda heerkulka sare iyo cadaadiska sare, waxyaabaha ka kooban PATK ayaa si isdaba joog ah uga shaqeyn kara jawiga biyaha oo wali hagaya in la ilaaliyo guryaha farsamada wanaagsan. Sida bilowga joogtada ah ee biyaha ku jira 100 ° C 200 maalmood, xoog ayaa weli is beddelin.
(5) Waxqabadka dib-u-eega ololka wanaagsan.
Waxay gaari kartaa qiimeynta UL-94 V-0 waa is-dabbaaldeg, waxayna ku soo kortaa qiiqa ka yar iyo gaasaska sunta ah ee ku hoos jira xaaladaha ololka.
(6) Waxqabadka korantada wanaagsan.
Peek waxay ku jiheysaa guryaha korantada inta badan inta jeer ee heerkulka ah.
(7) iska caabin shucaac adag.
Peek waxay leedahay qaab-dhismeedka kiimikada aad u deggan oo xasilloon, iyo qaybaha 'Peek' waxay si fiican ugu shaqeyn karaan hoos u dhac ku saabsan shucaaca imacizing.
(8) adag.
Caabbitaanka caabbinta ee walbahaarka ayaa ugu fiican dhammaan balaastigga oo dhan waxayna u dhigantaa aloys.
(9) kala go 'aad u fiican oo caabbinta xir.
Iidda sare ee iska caabbinta iyo kuwa tabiyeynta hooseeya ee kala goynta ayaa lagu hayaa 250 ° C.
(10) Waxqabadka wanaagsan ee socodsiinta.
Ka-soo-saarista fudud iyo gogosha duritaanka, iyo hufnaanta caaryada sare.
Waqtiga Post: 01-09-22