����AVëƬһ����������,�պ���Ʒ����һ���������� //15crmoghjg.cn Mon, 30 Oct 2023 05:59:47 +0000 zh-CN hourly 1 //wordpress.org/?v=6.1.5 //15crmoghjg.cn/wp-content/uploads/2016/06/favicon.png ����AVëƬһ����������,�պ���Ʒ����һ���������� //15crmoghjg.cn 32 32 ����AVëƬһ����������,�պ���Ʒ����һ���������� //15crmoghjg.cn/archives/5121 //15crmoghjg.cn/archives/5121#respond Mon, 30 Oct 2023 02:39:05 +0000 //15crmoghjg.cn/?p=5121 质聚}?HFO 发体系后熟化催化剂的选择

SolsticeTM (ting)LBAQ(ben)(ben)(ben)(ben)H(hui)FO-1233zd, 1-氯,(ren)3Q(ben)(ben)(ben)(ben)?Q(ben)(ben)(ben)(ben)? (ting)三氟丙烯Q(ben)(ben)(ben)(ben)是霍(ao)(ao)韦尔(que)(di)(yi)()出的第四(shui)低全球变暖潜(hu)|(jian)GWPQ(ben)(ben)(ben)(ben)发(ping)剂Q(ben)(ben)(ben)(ben)适用(ke)(bang)家用电器、徏{(jiang)保温、冷链运输(qin)(nin)(nin)(chen)业(qi)(qi)温{(jiang)领域聚氨酯隔(qi)材料的发(ping),(ren)(tuan)?CFC、HCFC、HFC (ting)(xia)(han)它非氟碳发剂的(lian)(lian)x(chong)(xi)发(ping)剂。适用(ke)(bang)(zhi)氨酯发行业的一(cun)U能够同时满(zan)_U(ao)(fa)艺及环保要求的新(zhong)一(xi)发(ping)剂Q(ben)(ben)(ben)(ben)(han)(hong)(lian)(lian)高? (ting) (ting)节能、(heng)(heng)(zhen)燃(kou)(heng)(heng)(zhen)(yang)可挥发性有(lian)(lian)物Q(ben)(ben)(ben)(ben)低(geng)(wei)球变暖潜|(jian)(ren)安全环保{(jiang)(ling)炏V(guang)经q不(zhen)断的配方? (ting) (ting)(chen)艺参数(kai)的优化(yi)Q(ben)(ben)(ben)(ben)以 SolsticeTM (ting)LBA (ting)C(cun)(xi)高效(yu)(ba)能环(qi)(qi)发(ping)剂(rou)(duo)的聚氨酯(ping)沫(xia)(chu)(lian)(lian)发(ping)剂体()Q(ben)(ben)(ben)(ben)?45fa (ting)(xia)(chu)戊烷Q(ben)(ben)(ben)(ben)(ling)比具(hong)(lian)(lian)更Z异的导热pL(kai)(xia)(shen)(lian)(lian)耗水qI(ren)(rou)别比(qi)(yang)(han)L 245fa (ting)(xi)及环戊烷体pd(tang)(geng)(bian)导热pL(kai)斚w(gui)降(zhan)(geng) 7%Q(ben)(ben)(ben)(ben)和(nin)(nin) 245fa (ting)体()相比Q(ben)(ben)(ben)(ben)和(nin)(nin) 12%

Q(ben)和环戊烷体(hong)pȝ比)Q(ben)(han)ƈ且在整机能耗方面降(mi)(huan)了(jian) 3%Q(ben)?45faQ(ben)(sui) 7%Q(ben)环戊烷Q(ben)?/span>

1 (5)

(xing)然 LBA (ting)发剂有(cong)(gao)上(ju)优点(yan)Q但在实际应用时也面临着(xiu)一些问(chui),(xi)我(duo)(xi)催(wo)化剂(qiang)(fei)(fei)(fei)角(qian)主(xia)(xing)(chui)是(yi)Q含卤素发剂的(qing)分解(kun)成(fei)(fei)(fei)催(wo)化剂(qiang)失活Q(han)(shu)传l的(qing)催化剂在 LBA (ting)(huan)()中不(kun)用Q但全球变暖(cuan)(fei)(fei)(fei)(qiao)(sun)(yue)(yue)让(xi)们不得不选择(han) LBA (ting)?ODP (ting)gؓ 0Q全(guai)球变(kuang)暖潜?GWP (ting)于 5 (fei)(fei)(fei)发(ping)剂(qiang)Q能同时满(mo)(ju)特(gui)议(yue)(yue)书(gong)(mo)(pin)(mo)京都议(yue)(yue)书(gong)(mo)(xu)(qing)(dui)保(xia)求Q(han)(shu)催(wo)化剂(qiang)也只  (ting) (ting)能(jie)新选择(han)(kun)用于这cd(ping)剂(qiang)(fei)(fei)(fei)新(kui)(pin)(wo)化剂(qiang)(huan)()(mo)?/span>

(juan)(juan)(juan)(juan)(juan)面(ba)(li)具体(hong)(jin)列(rou)(rou)析Q(ben)(han)(han)体(dun)例分(man)前(shan)Ҏ(shen)(cha)(xie)(nan)(ping)(li)(ru)(ru)(bei)说(cun)Q(ben)(qi)稳(yue)性”是指含(lian)? (ting)(ting)(ting)(ting)(ting)(ting)(ting)除异氰酸(mie)酯之(chan)(chan)的(qing)(qing)(qing)(qing)(hong)(hong)(hong)发(fa)(ping)组(yang)(bao)(yi)(fei)(juan)(lian)组(rou)(rou)的(qing)(qing)(qing)(qing)预(juan)؜(fan)物在()(())(cong)(ju)(ju)(juan)(juan)(juan)(juan)(juan)?50℃的(qing)(qing)(qing)(qing)烘箱(juan)(juan)(juan)(juan)(juan)?(she)(she)密(hao)(hao)(hao)(huo)(huo)(zhao)中(fu))热老(huo)(huo)(yi) 2 (ting)(ting)(ting)(ting)(ting)(ting)(ting)周后(hao)(hao)(hao)(gong)(lian)(chan)(chan)(xi)(qing)(qing)(qing)(qing)zL。(xiao)(xiao)()(())老(huo)(huo)(yi)q(ma)(yun)(juan)(juan)(juan)(juan)(juan),氢氟烯烃 (HFO) (hong)(hong)(hong)(jia)(ji)(xiao)(xiao)(chi)(chi)(jian)(jie)(hong)(hong)(hong)生(duo)(rou)(rou)(wu)Q(ben)从而(han)(han)致预L(feng)(yi)(chan)(chan)(bian)zL。(ta)(san)U(ao)zd(hui)(chi)(chi)以()标?FOMAT (ting)(ting)(ting)(ting)(ting)(ting)(ting)(cong)(ju)(ju)(shou)测(yue)(yue),q测(yue)(yue)上(ti)(pian)(pian)U的(qing)(qing)(qing)(qing)(ping)沫(bo)(kun)(xi)()Q(ben)(han)(han)(juan)(juan)(juan)(juan)(juan)包括在()(())聚合(hao)q(ma)(yun)(lian)间(nie)(cong)(ban)(fu)高(hua)(hai)(juan)(juan)(juan)(juan)(juan)时(lu)(lu)间(cun)(cun)(qing)(qing)(qing)(qing)关系以及(ping)沫(bo)(juan)(juan)(juan)(juan)(juan)升(kun)(zeng)(hai)(juan)(juan)(juan)(juan)(juan)时(lu)(lu)间(cun)(cun)(qing)(qing)(qing)(qing)  (ting)(ting)(ting)(ting)(ting)(ting)(ting) (ting)(ting)(ting)(ting)(ting)(ting)(ting)关系(mo)(yong)(yue)(yue)(gan)zȝ(qing)(qing)(qing)(qing)Ҏ是通过监(jia)(ping)沫(bo)(cha)(ju)(ju)(lang)(lang)(she)(she)老(huo)(huo)(yi)q(ma)(yun)(juan)(juan)(juan)(juan)(juan)不(zhen)(yang)时(lu)(lu)间(cun)(cha)(ju)(ju)(lang)(lang)(fei)(juan)(ying)(ying)(chan)(chan)高(qian)(qian)的(qing)(qing)(qing)(qing) 80% (fei)(juan)(lu)(lu)_以秒(juan)(juan)(juan)(juan)(juan)(hong)(yin)位)(fei)(fan)(kuang)化(zi)(yao)(zhi)(yang)(yi)(chi)(chi)以通过(cong)(ban)(fu)(hong)(hong)(hong)(hua)(yi)Δ(hua)(hua)(hua)T=T (ting)(ting)(ting)(ting)(ting)(ting)(ting)老(huo)(huo)(yi)-T (ting)(ting)(ting)(ting)(ting)(ting)(ting)(rou)(rou)(fen)(shou)测(yue)(yue)(gan)化剂(hao)能(fei)(juan)q(ma)。(bei)(ru)(ru),需(xia)?20 (ting)(ting)(ting)(ting)(ting)(ting)(ting)U(shu)(shan)(jian)达(jiu)(rou)(rou)最(ying)(ying)(rou)(rou)(fen)(chan)(chan)(pian)(pian)(lu)(lu)(cha)(ju)(ju)(lang)(lang)(fei)(juan)(ying)(ying)(chan)(chan)高(qian)(qian)的(qing)(qing)(qing)(qing) 80%(fei)(fan)(ji),(she)(she)?50C (ting)(ting)(ting)(ting)(ting)(ting)(ting)储存(jiang)(juan)(juan)(juan)(juan)(juan)周(yang)(yi)(chi)(chi)(jian)(jie)l(zi)(gan)(hong)(hong)(hong)(ao)(hao)衰减,(lao)(duo)需(xia)?30 (ting)(ting)(ting)(ting)(ting)(ting)(ting)U(shu)(shan)(jian)达(jiu)(rou)(rou)最(ying)(ying)(chan)(chan)高(qian)(qian)的(qing)(qing)(qing)(qing) 80%(cha)(ju)(ju)(lang)(lang)(fei)高(qian)(qian)((kun)过FOMAT (ting)(ting)(ting)(ting)(ting)(ting)(ting)(cong)(ju)(ju)量Q(ben)。(xiao)(xiao) Δ(hua)(hua)(hua)T (ting)(ting)(ting)(ting)(ting)(ting)(ting)(hao)(hao)(hao)ؓ 10 (ting)(ting)(ting)(ting)(ting)(ting)(ting)U(di)(xiao)(xiao)(shu),(qian)(dun)(shen)(cha)催化剂l(zi)(fan)(hao)物时(lu)(lu)Q(ben)需(ying)(ying)(xia)较(ji)(hao)(hao)(hao)的(qing)(qing)(qing)(qing)Δ(hua)(hua)(hua)T (hong)(hong)(hong)(hua)(yi)Q(ben)(han)(han)(juan)(juan)(juan)(juan)(juan)(san)U较(ji)(hao)(hao)(hao)的(qing)(qing)(qing)(qing)(hong)(hong)(hong)(hua)(yi)(juan)(juan)(juan)(juan)(juan)(zhi)(huo)(huo)(yi)q(ma)(yun)(juan)(juan)(juan)(juan)(juan)较(ji)低的(qing)(qing)(qing)(qing)zL损(chan)(chan)q(bian)(shi)兟뀂ΔT (ting)(ting)(ting)(ting)(ting)(ting)(ting)(fei)较(ji)(hao)(hao)(hao)(gan)(kuang)化意(sheng)味着Q(ben)例(ru)(ru),(yang)适(yao)(qing)(qing)(qing)(qing)喷(feng)(ping)沫(bo)配方(nan)(she)(she)老(huo)(huo)(yi)(yang)仍(su)(lao)(duo)(chi)(chi)以()沫,而不(zhen)需(xia)(huo)(huo)预(juan)؜(fan)物中(fu)d(hui)额(fen)(fei)(juan)? (ting)(ting)(ting)(ting)(ting)(ting)(ting) (ting)(ting)(ting)(ting)(ting)(ting)(ting)催化(yi)(ji)(bei)防止(hong)(hong)(hong)(ao)混(feng)(hao)物在()(())(qian)(qian)用(ke)q(ma)(yun)(juan)(juan)(juan)(juan)(juan)流(wu)挂、滴落(jie)(shou)(sui)陷(mo)(bei)ؓ了(wu)(jia)得稳(yue)的(qing)(qing)(qing)(qing)(ping)沫(bo)配方(nan)Q(ben)优(hong)(kun)? (ting)(ting)(ting)(ting)(ting)(ting)(ting) (ting)(ting)(ting)(ting)(ting)(ting)(ting)(hong)(hong)(hong)(ao)(hao)的(qing)(qing)(qing)(qing)Δ(hua)(hua)(hua)T (ting)(ting)(ting)(ting)(ting)(ting)(ting)(hong)(hong)(hong)(hua)(yi)(hao)(hao)(hao)于(lu)U?7 (ting)(ting)(ting)(ting)(ting)(ting)(ting)U(di)(yong)(mei)(xi)(sui)(qian)(qian)性的(qing)(qing)(qing)(qing)Δ(hua)(hua)(hua)T (ting)(ting)(ting)(ting)(ting)(ting)(ting)(hong)(hong)(hong)(hua)(yi)(hao)(hao)(hao)于(lu)U?5 (ting)(ting)(ting)(ting)(ting)(ting)(ting)U(di)(huo)(huo)于约(hai) 4 (ting)(ting)(ting)(ting)(ting)(ting)(ting)Uƈ(juan)(juan)(juan)(juan)(juan)在()(())(juan)(juan)(juan)(juan)(juan)

些情况下于U?3 U?/span>

(wei)(feng)(hong)(yue)施(dan)(jin)列如下(xiao)Q(ben)将U?100g (ting)(ting)(juan)述预(juan)؜(fan)(jian)添(e)到塑(jia)(dou)(yue)器(juan)封(huang)闭,q(qian)(qian)在(fen)封(huang)(yue)器(juan)的烘箱(juan)在 50(lu)()(())(xiao)调(tai) 7 (ting)(ting)?14 (ting)(ting)(chan)。样品(shan)在室温下(xiao)辑ֈq(qian)(qian)Q(ben)然(yang)在由机械؜(fan)(yang)叶(jian)以U?000rpm (ting)(ting)提供(fei)剧烈机械搅(ma)下(xiao)(juan)相(qian)量(fei)异(pin)酸(mie)酯(通常(juan)约(hai) 25g (ting)(ting)(chan)元醇预L?25g (ting)(ting)(liao)氰酔RQ(ben)(qun)؜(fan)(yang)。(xiao)(dan)纳(han)设(chan)(FOMAT (ting)(ting)型(pin)(fu) V3.5 (ting)(ting)?FOMAT (ting)(ting)(cong)֤附带(fei)(juan)(fu)(wu)YӞ(ji)(juan)测量沫上(ti)情况,q(qian)(qian)记录每(chuang)(juan)案例的选(qun)(zu)。(suo)(qun)(zu)以秒(juan)单(cao)量,(yue)()(())表每(chuang)(juan)发? (ting)(ting) (ting)(ting)体达(jiu)(rou)全高度(hai) 80% (jia)(an)(fei)(juan)间。时间记?1 (ting)(ting)(juan)组装ƈ立(pin)发(jia)(fei)预L(fei)选(qun)(zu)Q(ben)T2 (ting)(ting)(juan)?0(lu)(tai)(ze)?7 (ting)(ting)(chan)后(fei)选(qun)(zu)Q(ben)T3 (ting)(ting)(juan)?50(lu)(tai)(ze)?14 (ting)(ting)(chan)后(fei)选(qun)(zu)。ΔT (ting)(ting)是反(qian)性衰(fu)或(shou) T3 ?T1 (ting)(ting)(cen)间(fei)差倹{(xiao)q(yu)条g(juan),(an)要小?5 (ting)(ting)U的ΔT (ting)(ting)(jia)能(wei)h(shi)适(xiao)(hong)(fei)系l(xi)(yue)性?/span>

(chen)一为实(lin)(kou)(kou)案列过E(fu)中的基本配(li)(kou)(kou),其他(qu)原料不变Q(shen)个过E(fu)(pin)改催化(yi)剂种cR?/span>

基本配方(chen)格
物料U(qu) d量(PPHPQ?/span>
聚醚多元?/span> 30
聚酯多元?/span> 70
ȝ剂TCPP 20
a 3
发剂LBA 10
?/span> 2.5
胺催化剂(qiang)l(fan) (hong)变
金属催化剂组?/span> (hong)变(kuang)

(chen)二所CZؓ(fu)该催化(yi)l(zi)(fan)(fan)(hao)在老化(zu)表现(ban)(pi)昄(xiu)的(fan)(fan)应活性损失(bie)?ΔT 可证明?/span>

催化剂种c?/span> 用量QPPHPQ?/span> T1QSQ?/span> T2QSQ?/span> T3QSQ?/span> ΔTQSQ?/span>
NT CAT PC9+NT CAT D60+NT CAT PC5 1.4 12 20 42 30
NT CAT T-120 0.35

表三所CZؓ该催化剂l合(hao)表现好的(qing)反(ao)(pai)E_(hao),ΔT (hao)(ren) 5 U?/span>

催化剂种c?/span> 用量QPPHPQ?/span> T1QSQ?/span> T2QSQ?/span> T3QSQ?/span> ΔTQSQ?/span>
NT CAT LBC100+NT CAT LBC200+NT CAT LBC400 2.6 17 19 21 4
NT CAT MR20+NT CAT MB20 0.35

(juan)(juan)(hong)(yu)(juan)(juan)步做分析(fen)ҎQ(han)(chen)(chen)二和表(juan)(juan)进(yu)(chen)(chen)了(juan)(juan)(cong)(huang)h(tong)攑֤评(qiao)Q以便从 FOMAT (ting)(ting)(ting)(hong)(hong)应(hao)评伎(bang)ΔT (ting)(ting)(ting)(xi)沫达到(ban)(ban)(ying)大高度的(qing) 80% 所需旉(duo)(fei)(fan)加)和(han)际沫配(li)Ҏ能(juan)(juan)获得(wo)接相(shi)(wei)x(kai)据。将(chen)(chen)?2 (ting)(ting)(ting)(juan)(juan)所C(gan)的(qing)配方(fei)(fan)(wei)醇预؜物的(qing)所(lian)组分在(yue)(yue)(yue)属桶中(fu)混合在一P(ren)q(qian)用气(you)混合器؜合几()分(qian)后用(huang)h(tong)(lian)(hong)(yu)(chen)(chen)(chu)场喷(song)(suo)。(yong)形纸(shou)用螺栓(jue)固定在水q(qian)_(chong)地(ban)(ban)(shan)(shan)(juan)(juan)的(qing)(lian)托  (ting)(ting)(ting) (ting)(ting)(ting)盘(zhen)构(qiao)。通过(beng)少(yue)(yue)(yue)喷(song)雑ֈ桶中(fu)q(qian)用木制压舌板(shan)(shan)(shou)测(gai)(yue)(yue)(yue)(ren)^化时间、线(hao)(hao)凝(jian)时间和(chen)(chen)干  (ting)(ting)(ting) (ting)(ting)(ting)旉(duo)Q(zhuan)据下q(ban)(ban)法)q行(hong)(hong)应(hao)测(gai)(yue)(yue)(yue)(gai)这些喷(song)雾试验中(fu)(fei)(fan)(she)(she)(she)应性测(gai)(yue)(yue)(yue)(ren)ؓ(juan)(juan)式(ren)(xi)(jie)(yu)(chen)(chen)(han)ƈ(gou)? (ting)(ting)(ting) (ting)(ting)(ting)录每(juan)(juan)样品的(qing)q(qian)_(chong)(pi)倹{(jian)在配制多元(ya)醇预L(yi)(fei)(fan)(juan)(juan)天进(yu)(chen)(chen)(han)始反(she)(she)(she)应性测(gai)(yue)(yue)(yue)(gai)过(beng)用完(yu)(wei)配(li)? (ting)(ting)(ting) (ting)(ting)(ting)(fei)(fan)(wei)醇预؜物卷边(gui)? (ting)(ting)(ting)加仑(lin)桶ƈ(gou)桶|于 50C (ting)(ting)(ting)烘(zhen)(juan)(juan)?2 (ting)(ting)(ting)周来制备(fen)(gui)化样品(shan)(fei)(fan)(she)(she)(she)应性测(gai)(yue)(yue)(yue)(gai)?/span>

(juan)面展(li)(fou)具(feng)(hong)案(guo)()分析Q具体案例(pin)(ke)析前Ҏ较方法(li)(ru)下(xiao)说明Q“(chu)^化时(lu)间(cui)是(huang)h  液(ceng)(hong)在基材上(liao)(pu)(pin)应ƈh所需(fei)时(lu)_以秒(juan)单(yin)位。喷涂(yong)沫的乛_旉优选(bian)ؓ 0.2

(nie)?3 U(zhou)(di)如(man)^(gou)化时(lu)(xiang)(xiang)太(xiang),(ren)(ren)配方(hao)没有够(xi)_(hua)(hai)来保留在所(an)的位|(xiang),(ren)(ren)q(duo)(hong)能会滴落或从基(huang)材上(xian)(heng)或流(juan)。(chu)线(hao)(hao)(hao)凝(ji)胶时(lu)(xiang)(xiang)”测量ؓ(fu)喷(feng)(cui)(suo)体充(yi)(hong)应(pai)以(suo)体开始胶凝所(an)的时(lu)(xiang)(xiang)_以秒(juan)单位)Q(ben)(han)ƈ(juan)可以通(yun)()压舌板接触泡沫体ƈ(ma)动(hao)(wu)合物(yi)U从泡沫体中(fu)(ma)出(pi)q离泡沫。优选的(tuan),(ren)(ren)U性凝(ji)胶时(lu)(xiang)(xiang)在 4 U(zhou)至(li) 15 U(zhou)之(xiang)(xiang)。如(man)线(hao)(hao)(hao)胶凝时(lu)(xiang)(xiang)少?4 U(zhou),(ren)(ren)

(rou)发(ping)物质可(jian)会在上升之前胶(dui)凝(lian)从(zhi)在(ping)沫中生压(nie)(nie)力。如果线性凝(jian)时(lu)间大(bang)?15 (ting)(ting)U(shan) 如果聚合反应(li)有q行(rou)(ban)(ban)(li)能够承受(yu)自n重量(fei)程度,(rou)发(ping)体可能会下(kui)或自行回落? (ting)(ting) (ting)(ting)(huo)不_时(lu)间”是指当轻轻拍打(ping)沫(chen)面Ӟ(huang)(feng)液体反应(rou)(ban)(ban)(li)物质不(cong)粘在压(nie)(nie)舌(shen)上所需 (fei)(juan)(lu)_以秒为单位)。不_时(lu)间优选(bian)ؓ 5 (ting)(ting)?20 (ting)(ting)U?/span>

(chen)四所CZؓ(fu)(chen)二配方所(huan)(he)(xuan)数(kai)据,l果(xuan)明(mei)了该催化(yi)剂体p(fei)d 50℃储存两周后(man)(hong)(ao)(pai)性的昄(ju)(chen)减(mo)?/span>

乳白(zu)(nie)

QSQ?/span>

老化两周乳白旉QSQ?/span> U性凝胶时_SQ?/span> 老化(yi)两周U(wan)(kua)凝胶时(lu)?/span>

QSQ?/span>

不粘旉

QSQ?/span>

老化两周不粘旉QSQ?/span>
1.2 3.6 4.9 20.4 7.5 30.6

(chen)五所CZؓ(chen)三配方所(huan)测试(chen)据,l(dun)说明(bang)该催化剂体(hong)p(fei)M(bang)表(bang)的催化剂体(hong)p(fei)ȝ  E_(chong)性?/span>

乳白旉

QSQ?/span>

老化两周乳白旉QSQ?/span> U性凝胶时_SQ?/span> 老化两周U性凝胶时?/span>

QSQ?/span>

不粘旉(nie)

QSQ?/span>

老化两周不粘旉QSQ?/span>
1.4 1.6 7.5 10.5 11.7 17.1

本催化剂(qiang)l合(hong)用(bang)(tiao)(bang)Q何硬质绝(ju)~(ke)(ke)沫,q且特别(hong)用(bang)喷涂沫、器L(ju)~(ke)(ke)、绝(ju)  (ting)(ting) (ting)(ting)~(ke)(ke)徏{板和含有闭(fu)孔质聚(cha)(pin)酯泡沫的各(yu)U其它(mi)(ju)~(ke)(ke)品(bing)特别适用(bang)改善含有氢卤烯烃发  (ting)(ting) (ting)(ting)泡剂(qiang)的体pȝ(hun)E_性,例如 HFCO-1234zeQ反?1,3,3,3-四(lei)(juan)?1-烯)?HFCO-1233zd

Q(ben)反?1,3,3,3-四氟(ying)?1-烯)中的(nie)_一U(zhan)?1-丙烯(mo)?-?3,3,3-三氟(ying)Q(ben)等 HFO(mo)?/span>

技?/b>支持:183-0190-3156 吴经?/b>

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