akụkọ

N'ime atụmatụ nchekwa okpomọkụ nke ngwaahịa ikuku, maka ihe ndị chọrọ ọkpụrụkpụ dị ukwuu, nwere geometry dị mgbagwoju anya, ma ọ bụ ndị nwere ike ịgbawa nrụgide, a na-ejikarị ihe ndị mejupụtara eme ihe dị ka ihe nnọchi anya mkpuchi nchekwa okpomọkụ ọdịnala. Ọzọkwa, usoro nchekwa okpomọkụ mejupụtara na-enye nhọrọ mmepụta dị iche iche: enwere ike ịmepụta ha ngwa ngwa ozugbo na ebe nchekwa okpomọkụ akọwapụtara, ma ọ bụ enwere ike ijikọ ha na ebe site na iji aka uwe nchekwa okpomọkụ ejikọtara emebere, si otú a na-enye uru pụrụ iche nke usoro nkwadebe dị irè ma dị mfe. Ugbu a, a na-eji ngwakọta eriri iko phenolic eme ihe nke ukwuu na usoro nchekwa okpomọkụ n'ihi ọtụtụ uru ha, gụnyere nkwụsi ike nhazi, iguzogide okpomọkụ dị elu, mmepụta ike dị elu, obere ọnụego ablation, ike igwe dị elu, na ike mmetụta dị mma.

Ngwakọta eriri iko phenolicnwere nnukwu ike maka ojiji zuru oke n'ime ngalaba ikuku. Usoro nchekwa okpomọkụ ha gụnyere njikọ aka nke ọtụtụ usoro nchekwa, gụnyere igbochi mbugharị okpomọkụ, pyrolysis endothermic, mkpuchi okpomọkụ nke oyi akwa char na-enye, na nkwado nhazi. Akwụkwọ a ga-enyocha usoro nchekwa okpomọkụ site na echiche nke mgbochi mbugharị okpomọkụ, pyrolysis endothermic, na mkpuchi okpomọkụ nke oyi akwa char na-enye.

1. Mgbochi nke Okpomọkụ

N'ime ihe mejupụtara eriri iko phenolic, matrix resin phenolic n'onwe ya nwere obere ike okpomọkụ, nke na-egbochi mbugharị nke okpomọkụ mpụga nke ukwuu. Mgbe ihe mejupụtara ya nọ n'okpuru gburugburu okpomọkụ dị elu nke a na-ahụ n'oge ụgbọ elu, okpomọkụ na-agbasa na mbụ site na elu mpụta. Agbanyeghị, nhazi nke macromolecular yinye nke dị na matrix resin phenolic na-egbochi ụzọ mbugharị okpomọkụ, si otú a na-ebelata oke ọnụego mbufe okpomọkụ. N'otu oge ahụ, ọnụnọ nke eriri iko n'ime ihe mejupụtara ahụ na-agbanwe ụzọ mbugharị okpomọkụ dị n'ime. Ọzọkwa, njikọ dị n'etiti eriri iko na resin phenolic na-egosipụta oke ike okpomọkụ; n'ihi ya, okpomọkụ na-ezute mgbochi ọzọ ka ọ na-agafe interface a, na-egbochikwa usoro mbugharị okpomọkụ ma na-ebelata ọnụego mmụba okpomọkụ n'ime ihe mejupụtara ahụ nke ọma.

2. Endothermic Pyrolysis

Mgbe a na-ekpughere ya na gburugburu ebe okpomọkụ dị elu, resin phenolic na-enweta mmeghachi omume pyrolysis na-aga n'ihu. Usoro pyrolysis a bụ mmeghachi omume endothermic: mgbe ọ na-amịkọrọ ike okpomọkụ, njikọ kemịkalụ dị n'ime molekul resin phenolic na-agbawa, na-eme ka ihe ahụ gbawaa ghọọ obere gas molekul na ihe fọdụrụ na carbonaceous. Usoro a na-eri ike okpomọkụ nke e si na gburugburu ebe obibi pụta gaa na elu nke ihe mejupụtara ahụ nke ọma, si otú a na-ebelata okpomọkụ elu nke ihe mejupụtara ahụ n'otu oge. 3. Mkpuchi okpomọkụ site na Char Layer

Ka mmeghachi omume pyrolysis na-aga n'ihu, oyi akwa char na-etolite nwayọ nwayọ n'eluihe mejupụtara resin phenolic. . N'ime oghere char a, oghere ya jupụtara na gas na-egosipụta obere ike okpomọkụ; njirimara a na-eme ka ikike mkpuchi okpomọkụ nke ihe mejupụtara ahụ dịkwuo mma. N'otu oge ahụ, oyi akwa char na-egosi udidi elu siri ike nke nwere ike iguzogide nrụgide aerodynamic na ibu igwe, si otú a na-echebe ihe dị n'okpuru na-enweghị ọkụ site na mmetụta nchacha na mbuze nke mmiri gas dị elu. N'ime oghere char a na-emepụta n'elu ihe mejupụtara ọ bụghị naanị na ọ na-arụ ọrụ mkpuchi kamakwa, ruo n'ókè ụfọdụ, na-ebelata mfu oke na ihe mejupụtara ahụ, si otú a na-agbatị ndụ ọrụ nke ihe owuwu nchekwa okpomọkụ.