Pehea e hoʻomaikaʻi ai i ka pale wela o ka lāʻau?

ʻO ka pale ʻana i ka ʻelemakule wela a i ʻole ka wela wela ke lilo i mea nui, ʻoi aku hoʻi i nā noi kaʻa kahi e hoʻohana nui ʻia ai nā ʻāpana lāʻau i nā wahi i uhi ʻia me nā wela ambient kiʻekiʻe. Ua manaʻo nā mea hana kaʻa i ka hoʻonui ʻana i ke kaomi e hana i nā ola lawelawe lōʻihi no kā lākou mau ʻāpana. ʻOkoʻa nā waiwai ʻelemakule anaerobic a me nā mea wela a me ka ea. ʻOi aku ka maikaʻi o ka pale ʻana i ka wela, akā ʻaʻole hiki ke kū i ka hoʻouka ʻana o ka oxygen.

'Ōlelo Aʻo: ʻAʻole pili kēia mau kaʻina hoʻāʻo maʻamau i kēlā me kēia hihia kikoʻī. ʻO kēlā me kēia o nā mea hoʻololi e hiki ke hoʻomaikaʻi i ka pale ʻana i ka ea a i ʻole ke kūpaʻa wela wela e pili pono i nā waiwai ʻē aʻe, no ka maikaʻi a i ʻole ka hewa.

1. Perfluoroelastomer

Inā makemake ʻia ka lāʻau lapaʻau e loaʻa i ka pale wela maikaʻi loa, pono ʻoe e koho i ka lāʻau perfluorinated. Ua hōʻike ʻia ʻo ka wela hoʻohana o ka perfluoroelastomer a hiki i 316 ℃.

2、 ʻO ka lāʻau fluorine

Hiki ke hoʻohana ʻia i nā mahana wela a hiki i 260 ℃. I mea e hoʻoikaika hou ai i ka pale wela kiʻekiʻe o ka fluorine rubber, pono ʻoe e koho i ka mea ʻae kūpono (acid absorbent), e like me ka haʻahaʻa haʻahaʻa magnesium oxide, kiʻekiʻe ka hana magnesium oxide, calcium oxide, calcium hydroxide, zinc oxide, etc. ʻO ka fluoroelastomer's heat resistant air aging performance he mea maikaʻi loa, a hiki i ka mahana hoʻohana ke kiʻekiʻe e like me 200 ℃. Ma ke koho ʻana i ka bisphenol AF ma ke ʻano he ʻōnaehana vulcanization, ʻoi aku ka maikaʻi o ka pale ʻana i ka wela o ka lāʻau. Hoʻohana ʻia i loko o ke kaiapuni ʻaila ʻenekini paʻakikī, ʻoi aku ka maikaʻi o ke kūpaʻa wela o ka ternary fluoroelastomer i hana ʻia mai ka vinylidene fluoride, tetrafluoroethylene a me propylene ma mua o ka fluoroelastomer maʻamau. ʻO kēia ma muli o ka hoʻololi ʻana o ka hexafluoropropylene e propylene i ka hana polymerization.

3、 HNBR

ʻOi aku ke kiʻekiʻe o ka hydrogenation, ʻoi aku ka maikaʻi o ka wela o ka HNBR, no ka mea, ʻaʻohe mea paʻa paʻa ʻole unsaturated ma ke kaulahao nui i paʻa ʻole. Hiki i kekahi mau HNBR ke vulcanized me ka sulfur no ka mea, aia nō kekahi mau paʻa paʻa paʻa ʻole. Eia naʻe, inā vulcanized me ka peroxide, e hoʻomaikaʻi ʻia ka pale wela o ka pūhui. No ka HNBR rubber, hiki i ka TOTM ke hāʻawi i ka pale wela ʻoi aku ka maikaʻi ma mua o ka DOP ma muli o ka haʻahaʻa haʻahaʻa a me ke kaumaha molekala kiʻekiʻe o kēia mau trioctyl plasticizers.

4. Neoprene

ʻOi aku ka maikaʻi o ka neoprene ʻano W-type ma mua o ka neoprene G-type. ʻO ka diphenylamine octanoate kahi antioxidant maikaʻi loa no ka neoprene, hiki ke hoʻomaikaʻi maikaʻi i ka pale wela.

5、 EPDM

Loaʻa ka EPDM i ka wela maikaʻi ma 125 ℃ ma hope o ke kūpono kūpono. ʻO ka hoʻohana ʻana i ka peroxide vulcanized EPDM, hiki ke hana i ka lāʻau i ʻoi aku ka maikaʻi o ka wela.

6、 Haʻahaʻa viscosity vapor phase ala EPDM

Hiki ke hoʻopiha ʻia me ka nui o ka ethylene content a me ka ultra-low viscosity vapor phase EPDM, no ka nui o ka ethylene content, ʻaʻole pono ka hana ʻana e hui pū me ka hana ʻana o ka ea wela wela a maikaʻi ʻole, hiki ke hana i ka lāʻau me nā waiwai hana maikaʻi, no laila e hoʻomaikaʻi ʻia ke kūpaʻa wela maoli o ka lāʻau.

7、 Hōʻalo i ka hoʻohana ʻana i ka resin styrene kiʻekiʻe

Hōʻalo i ka hoʻohui ʻana i ka resin styrene kiʻekiʻe i ka lāʻau i hoʻohana ʻia i ka wela kiʻekiʻe.

8、 Ka pauka pā

I loko o ka EPDM hose rubber, hoʻololi i ka 40% o ke kalapona ʻeleʻele me ka talcum pauka, hiki ke hoʻomaikaʻi i ka pale ʻana o ka wela o ka lāʻau. ʻOi aku ka maikaʻi o kekahi mau ʻano o ka pauda talcum ma mua o ka pālolo i mālama ʻia a mālama ʻole ʻia ma kēia ʻano.

9、 High viscosity plasticizer

Ma waena o nā plasticizers, hiki i nā plasticizers viscosity kiʻekiʻe ke hāʻawi i ke kūpaʻa ʻoi aku ka wela ma mua o nā plasticizer viscosity haʻahaʻa. No ka mea, ʻo ka plasticizer viscosity kiʻekiʻe ka nui o ke kaumaha molecular, ʻaʻole maʻalahi e volatilize, no laila ke kūpaʻa maikaʻi a me ke kūpaʻa wela maikaʻi.

10、Rape hua aila no ka neoprene

I mea e hana ai i ka neoprene i ʻoi aku ka maikaʻi, pono ka ʻaila canola no ka mea he haʻahaʻa ka viscosity, kahi e loaʻa ai ka hysteresis haʻahaʻa a me ka volatility haʻahaʻa, hiki ke hana i ka lāʻau i ke kūpaʻa ʻelemakule maikaʻi.

11、EV / semi-effective SEV vulcanization ʻōnaehana

Ma ka 'ōnaehana vulcanization maika'i a semi-effective paha, ua ki'eki'e ka lakio o ka accelerator a me ka sulfur, 'o ia ho'i, 'ki'eki'e ho'oki'eki'e a me ka ha'aha'a sulfur', me ka 'sulfur i ke kino' ma kahi o ka sulfur ho'okahi, i loko o kēia vulcanization'ōnaehana, ka hapa o ka sulfur pa'a ho'okahi a me ka lua sulfur pa'a i loko o ka vulcanized sulfur ho'opa'a 'ia ke ki'eki'e, no ka mea, o kona vulcanized lākiō o ke kūpa'a o ka sulfur. a ʻoi aku ka kiʻekiʻe o ka paʻa sulfur pālua ma mua o ka paʻa multi-sulfur, no laila, ua hoʻomaikaʻi ʻia ke kūpaʻa kūpaʻa wela o ka lāʻau a ua hoʻomaikaʻi ʻia ke kūʻē ʻana o ka wela.

12、Zinc oxide

ʻO ka vulcanization / sub-sulfuramide vulcanization system o ka rubber, i hoʻopiha ʻia me ka zinc oxide, hiki ke hāʻawi i ka ʻōpala i nā waiwai ʻelemakule wela a ʻoi aku ka maikaʻi o ka pale ʻana i ka post-sulfur.

13、Peroxide vulcanized EPDM rubber

I loko o ka hui EPDM vulcanized peroxide, koho ʻia ʻo ZMTI ma ke ʻano he antioxidant, hiki iā ia ke hāʻawi i ka modulus kiʻekiʻe aʻe a me ka pale ʻana o ka wela.