Edemede a na-enyocha mmetụta nke ụdị platinum catalyst na itinye uche na crosslinking kinetics nke mgbakwunye silicone roba. Ụdị ihe na-akpata: Speier catalyst (chloroplatinic acid, Pt⁴⁺) chọrọ mbelata na ụdị ndị dị ala na-arụ ọrụ, na-arụ ọrụ dị ka precatalyst; Karstedt catalyst (Pt⁰ nwere divinyltetramethyldisiloxane) na-abanye ozugbo na okirikiri catalytic. Mmetụta ụdịdị: Speier na-egosi oge nnabata akpọpụtara ya na usoro ọgwụgwọ ụdị S (dị nwayọ ngwa ngwa, emechara ngwa ngwa) yana ike ịgbalite pụtara elu; Karstedt egosighi nnabata, ọnụego mmalite dị elu na exotherm dị nkọ, ike ịgbalite obere.

Isiokwu a na-ekpuchi ohere ngwa ngwa maka akwa Teflon dị elu na ụlọ ọrụ batrị siri ike na-apụta. Mpaghara anọ: Mwapụta electrode akọrọ / electrolyte akọrọ - eriri mgbochi osisi na-ebufe eriri ọkụ dị elu maka ịpị mpịakọta ọkụ (150-250 Celsius) na-eme ka ọ dị nro nke ihe nkiri na-akwado onwe ya; na-ekpo ọkụ rola mkpuchi oyi akwa dị ka ọkara-adịgide adịgide mgbochi osisi oyi akwa; na-eme ka ihu ihe nkiri dị mma, na-ebelata ntụpọ, na-eme ka mkpụrụ dịkwuo mma. Mwepu ihe mkpuchi na akwa mkpuchi maka densification na-ekpo ọkụ - batrị sulfide / polymer chọrọ ọkụ isostatic / flat pressing (100-300 ° C, iri MPa); PTFE ákwà enịm n'etiti batrị tojupụtara na ebu na-egbochi adhesion, na-enyere edo mgbali nkesa site micro-elasticity, na-echebe kpo oku efere.

Edemede a na-ekpuchi akwụkwọ ozi ọnụọgụ n'etiti akụkụ jel na ike jikọrọ ọnụ na nrapado nrụgide silicone maka teepu Teflon. Nkeji gel = oke pasentị nke netwọk njikọ ejikọtaghị ya na toluene ( mmịpụta Soxhlet, 24hr). Ike jikọtara ọnụ nke ejiri ike na-ejide oke okpomọkụ (180 ° C, 1kg). Oke atọ: n'okpuru ebe dị oke egwu (<60%) - enweghị netwọkụ na-eme mkpọtụ, na-ejide ike dị nso efu; dị irè (60-85%) - ike na-ejikọta ọnụ na-eto ngwa ngwa site na mpempe gel, 60% → 70% na-ebuli oge site na nkeji ruo awa, 70% → 80% na-enye mmụba 3-10x; elu crosslinking (> 85%) - enweta ngwa ngwa (85% → 95% naanị 20-50% na-abawanye), tack na-adaba nke ọma,> 95% na-efunahụ ihe PSA.

Edemede a na-enyocha mgbanwe na agbụ molecular PTFE n'okpuru irradiation ultraviolet. Isi yinye isi na mbelata ịdị arọ molecular: UV (254nm, 471 kJ/mol) na-agbaji agbụ CC (347 kJ/mol), na-eme ka homolysis, na-emepụta radicals efu CF₂ kwụsịrị, ọdịda molecular dị nkọ, mfu nke ike na elongation. Ụzọ mmeghachi omume radical free: na oxygen, peroxy radicals na-etolite, na-emezigharị na acyl fluoride (-COF) na carboxylic acid (-COOH) njedebe, na-ahapụ COF₂ na CO₂ (COF₂ hydrolyzes na HF); N'ime ikuku na-adịghị ahụkebe, ndakọrịta/nchịkọta ọnụ na-achị, mana nhịahụ ka a na-akakarị.

Edemede a na-ekpuchi ngwa nke Teflon akwa na-ekpo ọkụ na akwa mkpuchi okpomọkụ nke spacesuit. Ihe kacha mkpa: PTFE mkpuchi fiberglass akwa, mara na mbara igwe dị ka Beta ákwà, na-ejikọta akwa mgbanwe na PTFE oke-gburugburu inertness. Ọrụ: oyi akwa kacha elu nke Thermal Micrometeoroid Garment (TMG) n'ime nkeji agagharị agagharị, chere ihu ihu ozugbo, oke okpomọkụ dị iche iche, na micrometeoroids dị ka ihe mgbochi anụ ahụ / ọkụ nke mbụ maka ihe nkiri alumini dị n'ime. Nchekwa gburugburu ebe obibi dị oke egwu: na-eguzogide -200 ° C ruo + 260 ° C (anyanwụ na-eche ihu> 120 ° C na onyinyo -160 ° C); elu ọcha na-egosipụta radieshon anyanwụ; na-echebe ihe nkiri polyimide na-emebi emebi site na ncha na anya mmiri. Enyemaka ngagharị: obere esemokwu PTFE dị ala na-egbochi tangling oyi akwa n'oge ịgbagọ nkwonkwo, na-eme ka mgbanwe EVA nwee ike.

Isiokwu a na-ekpuchi ngwa ngwa nke Teflon akwa-okpomọkụ ákwà na lithium batrị electrode ihicha. A na-eji ya dị ka eriri ebufe ma ọ bụ ihe mkpuchi oven, na-edozi nsogbu atọ dị mkpa: slurry adhesion, corrosion, and electrode scratching. Anọ uru ebe: Electrode àgwà na mkpụrụ - mgbochi osisi Njirimara gbochie PVDF ihe nkedo adhesion enyere mfe zuru ezu peeling; conductivity thermal n'otu na 100-140 Celsius na-egbochi mgbawa / ọkụ; ezigbo elu na-ewepụ ncha na ntụ ntụ; Ogologo oge na nkwụsi ike arụmọrụ - nguzogide kemịkalụ megide ihe mgbaze NMP na vapors electrolyte na-enweghị ọzịza / ịka nká; ike tensile dị elu na nkwụsi ike akụkụ site na mkpụrụ osisi fiberglass maka nhazi ziri ezi; ihicha dị mfe na obere ihe fọdụrụ ma e jiri ya tụnyere eriri ntupu ígwè.

Isiokwu a na-ekpuchi otu esi ejikọta okpomọkụ decomposition na ọkara ndụ peroxide crosslinking agents (BPO na DCP) na windo usoro ọgwụgwọ maka Teflon teepu. Isi data: BPO - 1-min ọkara ndụ na ~ 131 ° C, 1-hr na ~ 92 ° C, 10-hr na ~ 72 ° C; DCP — 1-min na ~171°C, 1-hr na ~135°C, 10-hr na ~115°C. Echiche dabara adaba: nrapado chọrọ 97-99% crosslinking = 5-7 ọkara ndụ; oge ọgwụgwọ = 5-7 × ọkara ndụ na ọnọdụ okpomọkụ. Back-gbakọọ okpomọkụ site na mmepụta ahịrị obibi oge ma ọ bụ azụ-gbakọọ oge site na kacha ekwe okpomọkụ.

Isiokwu a na-ekpuchi ahụkarị ahịrị ọsọ nso maka PTFE elu-okpomọkụ ákwà impregnation mmepụta akara. Ọsọ ọsọ: 2-15 m / min, oke arụ ọrụ kwụsiri ike 3-8 m / min, akwa dị mkpa / ahịrị ọsọ dị elu ruo 10-15 m / min. Mgbochi si impregnation penetration: ákwà ga-n'ụzọ zuru ezu jupụta na PTFE emulsion n'ime eriri ngwugwu interiors - oke ọsọ na-akpata ezughị ezu impregnation, resin agụụ na akọrọ emep uta eri; emulsion viscosity, ihe siri ike itinye uche, njupụta akwa akwa niile na-ebelata ọnụego ntinye, na-achọ ngwa ngwa ngwa ngwa maka akwa akwa / akwa. Ihe mkpuchi mkpuchi: ọtụtụ ngafe (2-6+) achọrọ maka mkpuchi enweghị ntụpọ ntụpọ; mbụ ngafe ji nwayọọ nwayọọ maka ikwado, ngafe ndị na-esote nwere ike ịbawanye ntakịrị.

Isiokwu a na-atụnyere iche n'etiti infrared radieshon kpo oku na-ekpo ọkụ-ikuku mgbasa kpo oku on crosslinked Ọdịdị uniformity nke silicone nrapado oyi akwa. Usoro mbufe ọkụ: ikuku na-ekpo ọkụ bụ convection-convection, dị nwayọọ ma na-aga n'ihu, na-emepụta gradient okpomọkụ na-agafeghị oke; IR bụ mmịpụta radieshon nwere oke mmịfe elu (micrometers ruo millimeters) na-eke gradient dị elu-ruo n'ime. Mmetụta na nkesa njupụta crosslink: ikuku na-ekpo ọkụ na-enye ohere ka akụkụ nke ime na mpụta banye n'ime oke okpomọkụ nke fọrọ nke nta ka ọ bụrụ n'otu oge, na-emepụta njupụta crosslink otu na oke; IR na-eme ka oyi akwa dị n'elu gwọọ ozugbo na-etolite akpụkpọ anụ nke na-egbochi nnyefe okpomọkụ, na-ebute gradient dị nkọ nke njupụta crosslink na-ebelata site na elu ime.

Edemede a na-ekpuchi ọdịnaya silica yana ihe ngosi ngwa nke akwa akwa iko silica dị elu. Nkọwa ọdịnaya nke silica: isi ihe ngosi bụ SiO₂ ≥96% (ọkọlọtọ 96-98%, akara akara>99% site na leaching acid na sintering, na-abịaru nso eriri quartz dị ọcha). Nrụpụta: akwa E-glass na-enweta mmiri acid na-ekpo ọkụ ka ọ gbazee ihe ndị na-abụghị silica (boron oxide, sodium oxide), na-emepụta ọkpụkpụ silica dị elu, wee sintered maka densification. Uru ndị isi: ọrụ na-aga n'ihu na 900 ° C na ikuku oxidizing, obere oge karịa 1200 Celsius, ebe nro dị nso na 1700 ° C; nkwụsi ike kemịkalụ megide ọtụtụ acid / alkalis ma e wezụga HF na acid phosphoric na-ekpo ọkụ; obere dielectric mgbe niile na mkpuchi kwụsiri ike na oke okpomọkụ.