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Ngwongwo nke ihe nke polymer

August 22, 2024
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Ngwongwo nke mebere
1. ike tensile
Na ule oge ule, iru mmiri na ngwa iru mmiri, na ụdị axunder nduzi iji tinye ibu tensile, ruo mgbe mmebi ahụ mebiri. Specimen na-agbagha site na nrụgide tensile kachasị, nke a na-akpọ ike tensile (ike tensile). A na-agbakọ Tenlelile ike (σt) dị ka usoro a:
Tensile strength (σt)
Ebe p bụ ibu kachasị na-emebi emebi, n; b bụ obosara nke ụdị, m; D bụ ọkpụrụkpụ nke ụdị, m. Ibu ihe na-emebi ihe nke ụdị, n, bụ oke mbibi kachasị emebi.
1) Elongation na ezumike mgbe ihe nlereanya dị irè dị n'etiti akara na akara mbụ nke ogo nke pasent, nke a na-akpọ nke ọma dị ka elongation). Elongation na ezumike (εt) gbakọọ dịka usoro a
Elongation at break (εt)
Ebe L0 bụ ogologo mbụ dị mma nke ụdị ahụ, mm; L bụ ogologo oge dị mma nke ụdị na mgbaji.
2) Raisson's's's Race na njedebe nke ihe a na-eme, oke nke ụdị njegharị nke a na-eketa nrụgide ogologo oge na-a na-akpọ oke ikuku dị ogologo. Enwere ike ịgbakọ ọnụego poisson (iji usoro a:
Poisson's ratio (ν )
Ebe εt bụ nje transverse na ε bụ nsogbu ogologo oge.
3) tensile moduc nke na-adịghị ike na njedebe nke Tenteral, oke nrụgide Tenges na akwụkwọ ahụ na-akpọ ngbanye ahụ modelus (tensile modulu modus), nke a makwaara dị ka modulu nke nwatakịrị. A na-agbakọ modul modus (et) dịka usoro usoro a:
Tensile modulus of elasticity (Et )
Ebe σt bụ nrụgide tensile na εt bụ nje tensile.
Ule ule: GB / T 1040 usoro nnwale maka Njirimara Tensics.
2. Ike na-eme ka ike
A na-etinye ibu ndị na-eme ihe ike na nsọtụ abụọ nke ụdị ahụ ruo mgbe anụ ufe nwere ike (ihe na-adịghị edozi (ihe anaghị emebi emebi).
Ma ọ bụ mkpụrụ (ihe ndị na-abụghị nke na-adịghị edozi) mgbe nrụgide kachasị sie ike, nke a maara dị ka ike mkparịta ụka (ike mkpakọ). A na-agbakọ ike mkpakọ (σC) dịka usoro usoro a:
compression strength (σc)
Ebe p ka na-agbasa ma ọ bụ na-ekwenye ibu, n; F bụ mpaghara nke mbụ nke ụdị, m2.
A na-agbakọ usoro mkpakọ (EC)
compression modulus (Ec)
Ebe σC bu nrụgide nke mkpagbu, pa; εc bu nsogbu ndu.
Ule ule: GB / T 1041-2008 rọba na-enyocha usoro nnwale.
3. Ike mgbanwe
Oke nrụgide kachasị mepụta mgbe a na-emegharị ihe eji eme ihe na-emebi ma ọ bụ na-ebute ogo akọwapụtara na-aga n'ihu. A na-agbakọ ike mgbanwe (σF) dị ka usoro a:
flexural strength (σf )
Ebe p bụ ibu dị elu na ụdị, n; L bụ onye ahụ nke ụdị, m; b bụ obosara nke ụdị, m; D bụ ọkpụrụkpụ nke ụdị, m.
A na-akpọ ọgwụ modulus: rọba na njedebe nke nrụgide na-egbochi ya na nnweta ya kwekọrọ modulu (ma ọ bụ naanị modulus modulus nwa).
A na-agbakọ usoro modulu (EF)
flexural modulus (Ef )
Ebe σF bụ nchekasị na-egbochi, Pa; εf bụ nsogbu na-emegharị ahụ.
Ule ule: GB / T 9341-2008 ule maka ịrụ ọrụ nke plastics.
4. Ike mmetụta
Ike Ike (Ike Mmetụta) na-anọchite anya ikike kachasị nke ihe ahụ iji guzogide ibu. Nke ahụ bụ, n'okpuru ike mmetụta ahụ, ihe anụ ahụ mebiri ọrụ a na-eri na oke nke mpaghara obe nke ụdị. E nwere ụzọ nnwale abụọ maka ike mmetụta nke ihe.
1) Naanị usoro nnwale nke SEM na-enweghị isi ike (αn) na-enweghị isi ike (αK) dịka usoro usoro a:
Unnotched impact strength (αn) and notched im na Unnotched impact strength (αn) and notched im
Ebee ka a na-erite ọrụ ahụ nke ule na-enweghị isi, J; Ak bụ ọrụ site na ụdị a na-enweghị atụ, J; b bụ obosara nke ule ahụ, m; d bụ obosara nke ụdị ọdịiche dị na ya, m; DK bụ ụdị a na-enweghị isi na-edebanye na ọkpụrụkpụ fọdụrụnụ, m. 2) usoro nnwale nke conso ọ na-eji usoro a na-ede ihe na-enweghị isi, ike (αK) dị ka ndị a
2) usoro nnwale a na - eji usoro nnwale a na - ejighị ụdị ihe a, na ike ya (αK) dị ka usoro usoro ndị a:
impact strength (αk )
Ebe Ak bụ ọrụ a na-eri mgbe ụdị ahụ gbajiri, J; ΔE bụ ọrụ riri ahụ site n'ịchụpụ njedebe nke ụdị mgbagwoju anya nke Fracumen, J; b bụ obosara nke ụdị dị na notch, m.
Ule ule: GB / T 1043-2018 rọba siri ike na-akwado usoro nnwale
Usoro nnwale GB / T 1843-2008 maka rọba rọba; GB / T 14485 R99 Nnwale nnwale maka plastik na injinịa
14485 usoro ule maka Mmetụta na-emetụta iguzogide plastik plastik plastik na akụkụ rọba siri ike; Usoro ule GB / T 11548-1989 maka nsonaazụ iguzosi ike na plastic plastic
Usoro dakọtara; Usoro nnwale GB / t 13525-1992 maka mmetụta na-akpata plastik.
5. Hard'ssings
Mkpa ike na-ezo aka na nguzogide nke polymer ihe iji banye na ọkọ. Dabere na usoro ule ahụ, e nwere ụkpụrụ anọ ji na-ejikarị.
1) Brinell Hardness HB (Brinell siri ike)
Tinye ụfọdụ dayameta nke ígwè, n'okpuru ọrụ nke ibu akọwapụtara, pịa ụdị ahụ ma debe oge ụfọdụ, na omimi nke intentiation iji gbakọọ mpaghara nke ike, na
Dị ka ihe isi ike. Nkwupụta ha bụ
Brinell hardness1 na
Brinell hardness
Ebe P bụ ibu a etinyere, n; D bụ dayameta nke bọl ígwè, m; d bụ dayameta nke intentation, m; H bụ omimi nke intentation, m.
Ule ule: HG2-168-65 Brinell Usoro Nlere Anya Maka Plastics
2) Shero Ikpe
N'okpuru ime ihe ngosi nke nwere otu akọwapụtara, omimi nke agịga na-aga n'ime ụdị mgbe a na-ewere oge oge niile dị ka ihe atụ dabara adaba. E kewara isi ike na-ekewa n'ime mmiri na mmiri d. nke mbụ ga-emetụta ihe ndị na-adịghị mma; Nke ikpeazụ bara uru na ihe ndị siri ike.
Ule ule: GB / T 2411-2008 usoro nnwale usoro maka plastik
3) Rockwell siri ike
Ihe isi ike Rockwell nwere usoro ngosipụta abụọ. Ozo nke Sckale Bort Scornell na-enwe obere bọl siri ike, na ibu site na ibu mbu, wee laghachi na mbido mbụ Uru, gosipụtara na akara HR. Ofzọ a ga - esi tinye ihe ndị siri ike, kewara n'ime r, m, l.
Ule ule: GB / T 9342-88 RockWell usoro nnwale maka plastik
② rockwell H ihe siri ike na otu bọọlụ nke bọl nke ọma, n'okpuru ihe akọwapụtara nke ọma, pịa n'ime omimi nke ụdị ahụ maka uru siri ike, kwupụtara na H.
Ule ule: GB / T 3398-2008 usoro nnwale siri ike maka rọrọ plastic
4) Barcol siri ike
A na-abanyekwa otu ihe dị ka ọkọlọtọ n'okpuru nrụgide nke oge opupu ihe ubi.
Ntuli mmiri nke nwere ihe ngosi a kapịrị ọnụ na mmiri ọkọlọtọ na ụdị mmiri, omimi nke inwe obi ike nke ihe ndị a. Usoro a dabara adaba maka ikpebi ihe mgbochi nke eriri na ngwaahịa ha, yana ike itinye aka na ike nke plastic ndị ọzọ siri ike.
Ule ule: GB / T 3854-2017 Plastic Plastics Bachmann (Bakel)
Usoro nnwale siri ike.
6. creep
N'okpuru ọnọdụ okpomọkụ na iru mmiri, nrụpụta nke ihe ahụ ga-abawanye n'oge a na-aga n'ihu na-aga n'ihu.
N'okpuru ọnọdụ okpomọkụ na ọnọdụ iru mmiri mgbe niile, ihe a na-aga n'ihu na-aga n'ihu na-aga n'ihu na-aga n'ihu, nrụrụ na-abawanye na oge; Mmebi nke ji nwayọọ nwayọọ gbakere mgbe mwepụ nke mpụga, a na-akpọ ihe a dị egwu creep (creep).
A na-akpọ ihe a dị egwu. N'ihi ọdịdị dị iche iche nke mpụga, a ga-ekewakarị ya na tensile crep, crepday creep, shaar creep ma na-agbada.
Accountlọ Ọrụ Ule: GB / T 11546-2022 Mkpebi nke Plastics
7. ike ọgwụgwụ
Ike ọgwụgwụ (ike ọgwụgwụ) bụ ihe a na-egosi maka nrụgide nke cyclic ma ọ bụ ụdị mgbanwe nke usoro nke mpaghara na ntụpọ n'ime ime na usoro mmepe. Ike ọgwụgwụ bụ usoro nke mgbanwe usoro nhazi nke usoro nke ime ememe mere mgbe a na-edobe ihe na-akpata ọgba aghara na-agbanwe ókè.
8. Ọchịchọ na iyi
Ihe ndị ọzọ na ibe ha, enwere mkpofu dị iche iche n'etiti ibe ha ma ọ bụ ihe dị iche iche na-enweghị isi, ike dị n'etiti ibe ha na-ezo aka na-enweghị mgbagha. Comeffief nke esemokwu ma yie ihe eji mara ihe eji eme ihe.
1) Achịcha efu (Coloffiefs nke esemokwu)
Oke Startic Fress FMAX dị ka usoro a
Maximum static friction Fmax na
Dynamic friction Fmov
ebe μk bu onu ogugu nke igba ugha, ma p bu nrụgide dị mma, N.
2) Abration
Onu ogugu nke ihe mberede mgbe esemokwu maka oge ma obu oge nke oge a na-akpọ.
Onu ogugu nke ihe a ghaghi iju ajuju a oge ụfọdụ ma ọ bụ usoro a na-akpọ nza. Kacha mma iguzogide ihe a na-eme, belata oke nke nza.
Ule Ahịa: GB / T 3960-2016 na-acha uhie uhie na-eyi usoro nnwale maka plastik GB / T 5478-2008 mpịakọta usoro.
Kpọtụrụ anyị

Author:

Ms. Tina

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