(?) (?)玻(Bo)璃(Li)化(Hua)转(Zhuan)变(Bian)温(Wen)度(Du)((?)GlassTransitionTemperature,Tg)(?)是(Shi)指(Zhi)聚(Ju)合(He)物(Wu)或(Huo)其(Qi)他(Ta)材(Cai)料(Liao)在(Zai)加(Jia)热(Re)过(Guo)程(Cheng)中(Zhong),(?)从(Cong)玻(Bo)璃(Li)态(Tai)转(Zhuan)变(Bian)为(Wei)橡(Xiang)胶(Jiao)态(Tai)的(De)温(Wen)度(Du)。(?)在(Zai)此(Ci)温(Wen)度(Du)下(Xia),(?)材(Cai)料(Liao)的(De)分(Fen)子(Zi)链(Lian)开(Kai)始(Shi)活(Huo)动(Dong),(?)导(Dao)致(Zhi)其(Qi)物(Wu)理(Li)性(Xing)质(Zhi)发(Fa)生(Sheng)显(Xian)著(Zhu)变(Bian)化(Hua)。(?)玻(Bo)璃(Li)化(Hua)转(Zhuan)变(Bian)温(Wen)度(Du)是(Shi)评(Ping)估(Gu)聚(Ju)合(He)物(Wu)性(Xing)能(Neng)的(De)重(Zhong)要(Yao)参(Can)数(Shu),(?)影(Ying)响(Xiang)其(Qi)加(Jia)工(Gong)、(?)使(Shi)用(Yong)和(He)耐(Nai)久(Jiu)性(Xing)。(?)
(?) (?)玻(Bo)璃(Li)化(Hua)转(Zhuan)变(Bian)温(Wen)度(Du)测(Ce)试(Shi)分(Fen)析(Xi)仪(Yi)是(Shi)一(Yi)种(Zhong)用(Yong)于(Yu)测(Ce)量(Liang)材(Cai)料(Liao)玻(Bo)璃(Li)化(Hua)转(Zhuan)变(Bian)温(Wen)度(Du)的(De)专(Zhuan)业(Ye)设(She)备(Bei)。(?)它(Ta)通(Tong)过(Guo)加(Jia)热(Re)样(Yang)品(Pin)并(Bing)监(Jian)测(Ce)其(Qi)物(Wu)理(Li)性(Xing)质(Zhi)的(De)变(Bian)化(Hua),(?)提(Ti)供(Gong)准(Zhun)确(Que)的(De)Tg值(Zhi)。(?)这(Zhe)种(Zhong)仪(Yi)器(Qi)广(Guang)泛(Fan)应(Ying)用(Yong)于(Yu)材(Cai)料(Liao)科(Ke)学(Xue)、(?)聚(Ju)合(He)物(Wu)工(Gong)程(Cheng)、(?)食(Shi)品(Pin)科(Ke)学(Xue)等(Deng)领(Ling)域(Yu)。(?)
(?) (?)工(Gong)作(Zuo)原(Yuan)理(Li):(?)
(?) (?)1.样(Yang)品(Pin)准(Zhun)备(Bei):(?)将(Jiang)待(Dai)测(Ce)材(Cai)料(Liao)制(Zhi)备(Bei)成(Cheng)适(Shi)当(Dang)的(De)样(Yang)品(Pin),(?)通(Tong)常(Chang)为(Wei)薄(Bao)片(Pian)或(Huo)颗(Ke)粒(Li)状(Zhuang)。(?)
(?) (?)2.加(Jia)热(Re)过(Guo)程(Cheng):(?)将(Jiang)样(Yang)品(Pin)放(Fang)置(Zhi)在(Zai)测(Ce)试(Shi)仪(Yi)器(Qi)中(Zhong),(?)逐(Zhu)渐(Jian)加(Jia)热(Re)至(Zhi)预(Yu)定(Ding)温(Wen)度(Du)范(Fan)围(Wei)。(?)
(?) (?)3.数(Shu)据(Ju)采(Cai)集(Ji):(?)在(Zai)加(Jia)热(Re)过(Guo)程(Cheng)中(Zhong),(?)仪(Yi)器(Qi)实(Shi)时(Shi)监(Jian)测(Ce)样(Yang)品(Pin)的(De)物(Wu)理(Li)性(Xing)质(Zhi)变(Bian)化(Hua),(?)如(Ru)热(Re)膨(Peng)胀(Zhang)、(?)热(Re)导(Dao)率(Lu)、(?)比(Bi)热(Re)等(Deng)。(?)
(?) (?)4.数(Shu)据(Ju)分(Fen)析(Xi):(?)通(Tong)过(Guo)分(Fen)析(Xi)采(Cai)集(Ji)到(Dao)的(De)数(Shu)据(Ju),(?)确(Que)定(Ding)样(Yang)品(Pin)的(De)玻(Bo)璃(Li)化(Hua)转(Zhuan)变(Bian)温(Wen)度(Du)。(?)通(Tong)常(Chang),(?)Tg值(Zhi)对(Dui)应(Ying)于(Yu)物(Wu)理(Li)性(Xing)质(Zhi)变(Bian)化(Hua)的(De)拐(Guai)点(Dian)。(?)
(?) (?)5.结(Jie)果(Guo)输(Shu)出(Chu):(?)将(Jiang)测(Ce)试(Shi)结(Jie)果(Guo)以(Yi)图(Tu)表(Biao)或(Huo)数(Shu)值(Zhi)形(Xing)式(Shi)输(Shu)出(Chu),(?)便(Bian)于(Yu)用(Yong)户(Hu)分(Fen)析(Xi)和(He)记(Ji)录(Lu)。(?)
(?) (?)应(Ying)用(Yong)领(Ling)域(Yu):(?)
(?) (?)1.材(Cai)料(Liao)科(Ke)学(Xue):(?)用(Yong)于(Yu)研(Yan)究(Jiu)聚(Ju)合(He)物(Wu)、(?)复(Fu)合(He)材(Cai)料(Liao)和(He)其(Qi)他(Ta)材(Cai)料(Liao)的(De)热(Re)性(Xing)能(Neng),(?)帮(Bang)助(Zhu)开(Kai)发(Fa)新(Xin)材(Cai)料(Liao)。(?)
(?) (?)2.聚(Ju)合(He)物(Wu)工(Gong)程(Cheng):(?)用(Yong)于(Yu)评(Ping)估(Gu)聚(Ju)合(He)物(Wu)的(De)加(Jia)工(Gong)性(Xing)能(Neng)和(He)使(Shi)用(Yong)性(Xing)能(Neng),(?)指(Zhi)导(Dao)生(Sheng)产(Chan)工(Gong)艺(Yi)的(De)优(You)化(Hua)。(?)
(?) (?)3.食(Shi)品(Pin)科(Ke)学(Xue):(?)用(Yong)于(Yu)研(Yan)究(Jiu)食(Shi)品(Pin)的(De)物(Wu)理(Li)性(Xing)质(Zhi)变(Bian)化(Hua),(?)帮(Bang)助(Zhu)改(Gai)善(Shan)食(Shi)品(Pin)的(De)质(Zhi)量(Liang)和(He)保(Bao)鲜(Xian)性(Xing)能(Neng)。(?)
(?) (?)4.制(Zhi)药(Yao)行(Xing)业(Ye):(?)用(Yong)于(Yu)评(Ping)估(Gu)药(Yao)物(Wu)和(He)药(Yao)物(Wu)载(Zai)体(Ti)的(De)热(Re)特(Te)性(Xing),(?)确(Que)保(Bao)药(Yao)物(Wu)的(De)稳(Wen)定(Ding)性(Xing)和(He)有(You)效(Xiao)性(Xing)。(?)
(?) (?)5.电(Dian)子(Zi)行(Xing)业(Ye):(?)用(Yong)于(Yu)测(Ce)试(Shi)电(Dian)子(Zi)元(Yuan)件(Jian)材(Cai)料(Liao)的(De)热(Re)性(Xing)能(Neng),(?)确(Que)保(Bao)其(Qi)在(Zai)工(Gong)作(Zuo)环(Huan)境(Jing)中(Zhong)的(De)可(Ke)靠(Kao)性(Xing)。(?)
(?) (?)玻(Bo)璃(Li)化(Hua)转(Zhuan)变(Bian)温(Wen)度(Du)测(Ce)试(Shi)分(Fen)析(Xi)仪(Yi)的(De)测(Ce)试(Shi)方(Fang)法(Fa):(?)
(?) (?)1.差(Cha)示(Shi)扫(Sao)描(Miao)量(Liang)热(Re)法(Fa)((?)DSC)(?):(?)通(Tong)过(Guo)测(Ce)量(Liang)样(Yang)品(Pin)在(Zai)加(Jia)热(Re)过(Guo)程(Cheng)中(Zhong)吸(Xi)收(Shou)或(Huo)释(Shi)放(Fang)的(De)热(Re)量(Liang),(?)确(Que)定(Ding)Tg值(Zhi)。(?)DSC是(Shi)常(Chang)用(Yong)的(De)测(Ce)试(Shi)方(Fang)法(Fa)之(Zhi)一(Yi)。(?)
(?) (?)2.动(Dong)态(Tai)机(Ji)械(Xie)分(Fen)析(Xi)((?)DMA)(?):(?)通(Tong)过(Guo)施(Shi)加(Jia)周(Zhou)期(Qi)性(Xing)应(Ying)力(Li),(?)测(Ce)量(Liang)材(Cai)料(Liao)的(De)储(Chu)能(Neng)模(Mo)量(Liang)和(He)损(Sun)耗(Hao)模(Mo)量(Liang),(?)确(Que)定(Ding)Tg值(Zhi)。(?)DMA能(Neng)够(Gou)提(Ti)供(Gong)更(Geng)详(Xiang)细(Xi)的(De)材(Cai)料(Liao)性(Xing)能(Neng)信(Xin)息(Xi)。(?)
(?) (?)3.热(Re)重(Zhong)分(Fen)析(Xi)((?)TGA)(?):(?)通(Tong)过(Guo)测(Ce)量(Liang)样(Yang)品(Pin)在(Zai)加(Jia)热(Re)过(Guo)程(Cheng)中(Zhong)的(De)质(Zhi)量(Liang)变(Bian)化(Hua),(?)间(Jian)接(Jie)推(Tui)测(Ce)Tg值(Zhi)。(?)TGA通(Tong)常(Chang)用(Yong)于(Yu)评(Ping)估(Gu)材(Cai)料(Liao)的(De)热(Re)稳(Wen)定(Ding)性(Xing)。(?)
(?) (?)4.红(Hong)外(Wai)光(Guang)谱(Pu)法(Fa)((?)FTIR)(?):(?)通(Tong)过(Guo)分(Fen)析(Xi)材(Cai)料(Liao)的(De)红(Hong)外(Wai)光(Guang)谱(Pu)变(Bian)化(Hua),(?)研(Yan)究(Jiu)其(Qi)分(Fen)子(Zi)结(Jie)构(Gou)变(Bian)化(Hua),(?)从(Cong)而(?)推(Tui)测(Ce)Tg值(Zhi)。(?)