ASTM D2000 a shol¨¢thra¨ªonn bealach caighde¨¢nach do cheannaitheoir¨ª agus sol¨¢thraithe chun cur s¨ªos a dh¨¦anamh ar ¨¢bhair elastomer, ag ¨²s¨¢id ainmni¨² 'l¨ªne-ghlao amach'.
Tr¨ª thuiscint an strucht¨²r ASTM D2000, is f¨¦idir linn na gn¨¦ithe t¨¢bhachtacha den elastomer at¨¢ i gceist a chinneadh. I measc na n-eilimint¨ª seo t¨¢:
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Bliain Athbhreithnithe
Aonaid Beart
³Ò°ù¨¢»å
Cine¨¢l agus Rang
Cruas (Durometer)
Neart Tensile
Riachtanais Breise
Chun sonra¨ªochta¨ª ASTM D2000 a thuiscint, d¨¦anfaimid tagairt don sampla seo a leanas:
ASTM D2000 03 M2 BG 717 B14 EO14 EO34 F17
°ä²¹¾±²µ³ó»å±ð¨¢¾±²Ô:
An caighde¨¢n in ¨²s¨¢id. Agus t¨¢irg¨ª rubair ¨¢ shonr¨², is ¨¦ seo ASTM D2000.
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Bliain Deireanach Athbhreithnithe:
C¨®d dh¨¢ dhigit a shonra¨ªonn an bhliain a rinneadh an caighde¨¢n a athbhreithni¨² go deireanach. I ¨¢r sampla, is ¨¦ an luach seo 03.
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Aonaid Beart:
Na haonaid beart a ¨²s¨¢idtear chun na tortha¨ª t¨¢st¨¢la a thuairisci¨². Is ¨¦ seo an litir M a chuimsi¨² d¡¯aonaid m¨¦adrach, n¨® f¨¢gfar ¨¦ b¨¢n d¡¯aonaid bhearta Shasana. In¨¢r sampla, t¨¢ an M san ¨¢ireamh.
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³Ò°ù¨¢»å:
An gr¨¢d an elastomer, l¨¦ir¨ªonn an leibh¨¦al na riachtanais t¨¢st¨¢la at¨¢ le cur i bhfeidhm. Tugann gr¨¢d 1 le fios nach bhfuil ach riachtanais bhun¨²sacha riachtanacha, agus sainmh¨ªn¨ªonn gr¨¢id 2-9 riachtanais t¨¢st¨¢la breise. In¨¢r sampla, Is ¨¦ an luach seo 2.
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Cine¨¢l agus Aicme: Catag¨®ir¨ª
ASTM D2000 cine¨¢lacha ¨¢bhar elastomer bunaithe ar fhriota¨ªocht teochta, agus ¨¦il¨ªonn siad go gcomhl¨ªonann siad na riachtanais seo a leanas tar ¨¦is 70 uair an chloig, 100DC d¡¯aois teasa ag teochta¨ª ¨¦ags¨²la, Ag brath ar an gcine¨¢l.
Athr¨² i neart teanga: ¡À 30%
Athr¨² ar fhad¨²: -50% max
Athr¨² i cruas: ?s¨¢idtear Aicme
chun ¨¢bhair a dhifre¨¢il ar bhonn a bhfriota¨ªocht a bheith tumtha ar feadh 70 uair an chloig in IRM 903 Ola.
Taispe¨¢nann na t¨¢bla¨ª seo na hainmni¨²ch¨¢in litreacha do chine¨¢l agus rang:
Taispe¨¢nann an t¨¢bla th¨ªos an polaim¨¦ir is coitianta a ¨²s¨¢idtear don chine¨¢l / aicme ar leith:
| ASTM D2000 SAE J200 Ainmni¨² ?bhar (Cine¨¢l agus Aicme) |
Cine¨¢l Polymer is minic a ¨²s¨¢idtear |
| AA | Rubar N¨¢d¨²rtha, R¨²bar SBR, Butyl, EP Polybutadiene, Polyisoprene |
| BA | comhdh¨²ile SBR Ardteocht agus butyl |
| BC | polaim¨¦ir¨ª Chloroprene (neoprene) |
| BE | polaim¨¦ir¨ª Chloroprene (neoprene) |
| BF | polaim¨¦ir¨ª NBR |
| BG | polaim¨¦ir¨ª NBR |
| BK | polaim¨¦ir¨ª dihalide Org¨¢nach (Thickol), NBR |
| CA | propylene eitil¨¦in |
| CE | Cl¨®rosulfonated polaitile¨¢n (Hypalon) |
| CH | Polaim¨¦ir¨ª NBR |
| DF | Polyacrylic (cine¨¢l butyl-acrylate) |
| DH | polaim¨¦ir¨ª Polaicrylic, HNBR |
| EE | AEM, (Vamac) |
| FC | Silicones (neart ard) |
| FE | Silicones |
| FK | sileacain fluorinated |
| GE | Silicones |
| HK | Fluorinat |
| elastomers (Viton)?) | KK |
Perfluroroelastomers
In¨¢r sampla, is ¨¦ an cine¨¢l B agus is ¨¦ an rang G.
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Cruas (Durometer)
An cruas an t-¨¢bhar a l¨¦ir¨ªonn an raon durometer in aonaid Shore A, ¡À 5 durometer. Iolra¨ªtear an luach glaonna amach 10 chun luach iarbh¨ªr an elastomer a fh¨¢il. I ¨¢r sampla, is ¨¦ an cruas 70 ¡À 5 durometer.
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Neart Tensile
An ch¨¦ad d¨¢ eile L¨¦ir¨ªonn digit¨ª neart teannta ¨ªosta an elastomera. D¨¦anfar ¨¦ seo a thomhas i MPa d¡¯aonaid m¨¦adrach, agus i psi d¡¯aonaid B¨¦arla. In¨¢r sampla, is ¨¦ an neart teannta ¨ªosta n¨¢ 17 MPa.
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Ionaid¨ª Riachtanais Breise
An rem is ¨¦ard at¨¢ i gcuid de shonra¨ªocht ASTM D2000 ceanglais iarmh¨ªr, a ¨²s¨¢idtear nuair nach leor na ceanglais bhun¨²sacha do chine¨¢l ¨¢irithe agus aicme ¨¢bhar elastomer chun na hair¨ªonna at¨¢ ag teast¨¢il sa t¨¢irge cr¨ªochnaithe ..
| Aithn¨ªonn an ch¨¦ad litir den iarmh¨ªr an t¨¢st¨¢il riachtanach, mar a thaispe¨¢ntar sa t¨¢bla seo a leanas: | Iarm |
| T¨¢st¨¢il Riachtanach | A |
| Friota¨ªocht teasa | B |
| Comhbhr¨²ite Socraigh | C |
| Oz¨®n n¨® muid Friota¨ªocht | D |
| Friota¨ªocht Chomhbhr¨²ite-Feilimh | EA |
| Friota¨ªocht Uisce | EF |
| Breosl Friota¨ªocht | EO |
| Ola agus Friota¨ªocht Lubricant | F |
| Friota¨ªocht Teocht ?seal | G |
| Friota¨ªocht Tear | H |
| Friota¨ªocht Flex | J |
| Friota¨ªocht Abrasion | K |
| 4 Adhesion | M |
| Friota¨ªocht Flammability | N |
| Friota¨ªocht Tionchair | P |
| Friota¨ªocht Staining |
R
Seasmhacht
I gc¨¢s gach ceann de na iarmh¨ªreanna, leanann na litreach tosaigh / na litreacha Uimhreacha. Sonra¨ªonn an ch¨¦ad uimhir an modh t¨¢st¨¢la at¨¢ le h¨²s¨¢id, agus fad na t¨¢st¨¢la sin. L¨¦ir¨ªonn an dara uimhir an teocht t¨¢st¨¢la.
Ag brath ar do iarratas ar leith, b¡¯fh¨¦idir gur g¨¢ duit a ¨²s¨¢id roinnt de na riachtanais iarmh¨ªr chun an comhdh¨²il cruinn at¨¢ ag teast¨¢il a shol¨¢thar.
