三级片视频播放,精品三级片在线观看,A级性爱视频,欧美+日韩+国产+无码+小说,亲子伦XX XX熟女,秋霞最新午夜伦伦A片黑狐,韩国理伦片漂亮的保拇,一边吃奶一边做边爱完整版,欧美放荡性护士videos

您好, 歡迎來(lái)到化工儀器網(wǎng)

| 注冊(cè)| 產(chǎn)品展廳| 收藏該商鋪

18303590088

Download

首頁(yè)   >>   資料下載   >>   運(yùn)用熱分析分析熱塑性材料的物理性質(zhì)

TA儀器

立即詢價(jià)

您提交后,專屬客服將第一時(shí)間為您服務(wù)

運(yùn)用熱分析分析熱塑性材料的物理性質(zhì)

閱讀:1603      發(fā)布時(shí)間:2016-04-05
分享:

Thermal Analysis is the generic name for a series of measurement techniques traditionally used to determine changes in material properties with temperature. Common thermal analysis techniques include:

- Differential Scanning Calorimetry (DSC) - is the most widely used thermal analysis technique. DSC measures the heat flow in materials and provides information about phase changes (amorphous and crystalline transitions) as well as chemical changes (degradation and reactions).

- Thermogravimetric Analysis (TGA) - measures weight changes associated with thermal events. While TGA is most commonly used to determine compositional analysis, it is also valuable for determining thermal stability. Furthermore, by analyzing multiple TGA curves obtained under different heating rates, it is possible to predict long-term as well as short-term thermal stability.

- Dynamic Mechanical Analysis (DMA) - measures the storage or elastic modulus and the loss or viscous modulus of materials subjected to sinusoidal or static stresses.

- Dielectric Analysis (DEA) - is the electrical analog of DMA in which the current (phase and magnitude) resulting from a sinusoidally imposed voltage are measured. Because mechanical and electrical properties are highly sensitive to small changes in material internal structures, DMA and DEA are more sensitive to low energy transitions, such as the glass transitions of filled epoxy systems, than are other thermal analysis methods. The static stress modes of the DMA further allow long term strength forecasts to be made using the creep or stress relaxation methods at elevated temperatures.

In this paper, the short-term and long-term physical properties of two engineering thermoplastics are explored. The results illustrate the value of thermal analysis for characterizing thermoplastic materials.

提供商

TA儀器

下載次數(shù)

264次

資料大小

336.2KB

資料類型

PDF 文件

資料圖片

--

瀏覽次數(shù)

1603次

產(chǎn)品展示

會(huì)員登錄

請(qǐng)輸入賬號(hào)

請(qǐng)輸入密碼

=

請(qǐng)輸驗(yàn)證碼

收藏該商鋪

標(biāo)簽:
保存成功

(空格分隔,最多3個(gè),單個(gè)標(biāo)簽最多10個(gè)字符)

常用:

提示

您的留言已提交成功!我們將在第一時(shí)間回復(fù)您~
在線留言
主站蜘蛛池模板: 瓮安县| 洪雅县| 连州市| 大田县| 布拖县| 隆昌县| 白朗县| 苗栗县| 洛阳市| 江孜县| 鄄城县| 隆回县| 鄢陵县| 三原县| 廊坊市| 塔河县| 安平县| 南川市| 吉林省| 息烽县| 凉城县| 会宁县| 乌海市| 札达县| 应城市| 田林县| 罗平县| 台江县| 疏勒县| 曲阳县| 金塔县| 苏尼特左旗| 梁山县| 永定县| 柘荣县| 天峨县| 湛江市| 汝州市| 玉溪市| 三门县| 朔州市|