一种油基钻井液封堵用油溶胀微凝胶的制备及性能评价【1、西南石油大学化学化工学院中2、石化中原石油工程有限公司西南钻井分公司3、中国石油集团川庆钻探工程有限公司钻井液技术服务公司 赵 艳 张太亮 刘杨康 胡 静】
关键词: DSC 差示扫描量热仪 导热 液态金属导热液
液态金属导热膏或液态金属导热液是低熔点金属合金,熔点约10℃,常温下为膏状或液态,是一款新型的超高导热的界面材料,常用于解决高功率器件的导热散热问题。液态金属做为导热材料相对于传统导热硅脂类材料的优势:
1、液态金属具有高导热率,接触热阻低。
2、由于金属是由原子构成,原子共价半径极小,液态金属作为导热材料时能够更好地渗透到CPU和散热模组之间的缝隙中,达到更好的填充效果。
3、液态金属沸点高,是一款无挥发,无污染的导热材料。而传统硅脂通常具有一定挥发性,使用一段时间后会固化。故相对于硅脂而言液态金属作为导热材料在长期可靠性方面具有明显的优势。
仪器 HS-DSC-101 差示扫描量热仪
仪器参数
灵敏度:0.001mW 温度范围:RT~600℃
温度精度:±0.1℃ 温度波动: ±0.1℃
升温速率:0.1~80℃/min 升温速率:0.1~40℃/min
l从样品中取1~3mg作为试样
2、Electro-Thermochromic Luminescent Fibers Controlled by Self-Crystallinity Phase Change for Advanced Smart Textiles
3、Carbon fiber/polyetherketoneketone composites. Part I: An ideal and uniform composition via solution‐based processing
4、Isolation and characterization of acid-soluble collagen and pepsin-soluble collagen from the skin of hybrid sturgeon
5、Physicochemical properties of soybean-based diacylglycerol before and after dry fractionation.
6、Water-in-oil emulsions enriched with alpha-linolenic acid in diacylglycerol form: Stability, formation mechanism and in vitro digestion analysis
7、Effects of treatment methods on the formation of resistant starch in purple sweet potato
8、High Lithium Ion Flux of Integrated Organic Electrode/Solid Polymer Electrolyte from In Situ Polymerization
9、Preheat Compression Molding for Polyetherketoneketone: Effect of Molecular Mobility
10、Characterization and experimental investigation of aluminum nitride-based composite phase change materials for battery thermal management
11、Experimental investigation of the flame retardant and form-stable composite phase change materials for a power battery thermal management system
12、Experimental investigation on immersion liquid cooled battery thermal management system with phase change epoxy sealant
13、Experimental Investigation on Thermal Management of Electric Vehicle Battery Module with Paraffin/Expanded Graphite Composite Phase Change Material
1、Influence of the Annealing Process on Magnetic Performance of Iron based Soft Magnetic Composites
2、Thermal activation significantly improves the organic pollutant removal rate of low-grade manganese ore in a peroxymonosulfate system
3、Rheological and self-healing properties of asphalt binder containing microcapsules
4、Self-healing property and road performance of asphalt binder and asphalt mixture containing urea-formaldehyde microcapsule
5、Experimental study on salt–metal organic framework composites for water absorption
6、Microwave pretreatment enhanced the properties of ovalbumin-inulin-oil emulsion gels and improved the storage stability of pomegranate seed oil
7、Electro-Thermochromic Luminescent Fibers Controlled by Self-Crystallinity Phase Change for Advanced Smart Textiles
1、Hydrogel beads derived from chrome leather scraps for the preparation of lightweight gypsum
2、Size-controlled graphite nanoplatelets_ thermal conductivity enhancers for epoxy resin
3、Thermal, morphological, and mechanical characteristics of sustainable tannin bio-based foams reinforced with wood cellulosic fibers
4、Improved thermal conductivity of epoxy resin by graphene–nickel three-dimensional filler
5、A synergistic strategy for fabricating an ultralight and thermal insulating aramid nanofiber/polyimide aerogel
6、Fabrication of Graphene/TiO 2 /Paraffin Composite Phase Change Materials for Enhancement of Solar Energy Efficiency in Photocatalysis and Latent Heat Storage
7、Improved thermal conductivity of styrene acrylic resin with carbon nanotubes, graphene and boron nitride hybrid fillers
8、Preparation and characterization of paraffin/expanded graphite composite phase change materials with high thermal conductivity
9、Tailoring of bifunctional microencapsulated phase change materials with CdS/SiO2 double-layered shell for solar photocatalysis and solar thermal energy storage
10、Functional aerogels with sound absorption and thermal insulation derived from semi-liquefied waste bamboo and gelatin
11、Lamellar-structured phase change composites based on biomass-derived carbonaceous
sheets and sodium acetate trihydrate for high-efficient solar photothermal energy harvest
12、Construction of double cross-linking PEG/h-BN@GO polymeric energy-storage composites with high structural stability and excellent thermal performances
13、Gelatin as green adhesive for the preparation of a multifunctional biobased cryogel derived from bamboo industrial waste
14、A novel self-thermoregulatory electrode material based on phosphorene-decorated phase-change microcapsules for supercapacitors
15、Development of poly(ethylene glycol)/silica phase-change microcapsules with well-defined core-shell structure for reliable and durable heat energy storage
16、Experimental and numerical study on heat emission characteristics of ventilated air annular in tunneling roadway
17、Construction of polyaniline/carbon nanotubes-functionalized phase-change microcapsules for thermal management application of supercapacitors
18、Mechanical, thermal and acoustical characteristics of composite board kneaded by leather fiber and semi-liquefied bamboo
19、Tuning the oxidation degree of graphite toward highly thermally conductive graphite/epoxy composites
20、Thermal self-regulatory smart biosensor based on horseradish peroxidase-immobilized phase-change microcapsules for enhancing detection of hazardous substances
21、Morphology-controlled synthesis of microencapsulated phase change materials with TiO2 shell for thermal energy harvesting and temperature regulation
22、Size-tunable CaCO3@n-eicosane phase-change microcapsules for thermal energy storage
23、High-Efficiency Preparation of Reduced Graphene Oxide by a Two-Step Reduction Method and Its Synergistic Enhancement of Thermally Conductive and Anticorrosive Performance for Epoxy Coatings
24、Temperature and pH dual-stimuli-responsive phase-change microcapsules for multipurpose applications in smart drug delivery
25、Development of Renewable Biomass-Derived Carbonaceous Aerogel/Mannitol Phase-Change Composites for High Thermal-Energy-Release Efficiency and Shape Stabilization
26、Immobilization of laccase on phase-change microcapsules as self-thermoregulatory enzyme carrier for biocatalytic enhancement
27、Microencapsulating n-docosane phase change material into CaCO3/Fe3O4 composites for high-efficient utilization of solar photothermal energy
28、Integration of Magnetic Phase-Change Microcapsules with Black Phosphorus Nanosheets for Efficient Harvest of Solar Photothermal Energy
29、Surface construction of Ni(OH)2 nanoflowers on phase-change microcapsules for enhancement of heat transfer and thermal response
30、Design and fabrication of bifunctional microcapsules for solar thermal energy storage and solar photocatalysis by encapsulating paraffin phase change material into cuprous oxide
31、Design and construction of mesoporous silica/n-eicosane phase-change nanocomposites for supercooling depression and heat transfer enhancement
32、Development of reversible and durable thermochromic phase-change microcapsules for real-time indication of thermal energy storage and management
33、Nanoflaky nickel-hydroxide-decorated phase-change microcapsules as smart electrode materials with thermal self-regulation function for supercapacitor application
34、Biodegradable wood plastic composites with phase change microcapsules of honeycomb-BN-layer for photothermal energy conversion and storage
35、Hierarchical microencapsulation of phase change material with carbon-nanotubes/polydopamine/silica shell for synergistic enhancement of solar photothermal conversion and storage
36、Molecularly Imprinted Phase-Change Microcapsule System for Bifunctional Applications in Waste Heat Recovery and Targeted Pollutant Removal
37、Pomegranate-like phase-change microcapsules based on multichambered TiO2 shell engulfing multiple n-docosane cores for enhancing heat transfer and leakage prevention
38、Innovative Integration of Phase-Change Microcapsules with Metal–Organic Frameworks into an Intelligent Biosensing System for Enhancing Dopamine Detection
39、Morphology-controlled fabrication of magnetic phase-change microcapsules for synchronous efficient recovery of wastewater and waste heat
40、Polyimide/phosphorene hybrid aerogel-based composite phase change materials for high-efficient solar energy capture and photothermal conversion
上海和晟仪器科技有限公司受邀参展,展台号A21.
海绵大多为聚氨酯(PU)
聚氨酯分类:
软泡
硬泡
弹性体
胶粘剂(含密封剂)
涂料
这次的试验是以软泡为样品
物理性质:
压陷硬度指数
25%压陷硬度/N
65%/25%压陷比
75%压缩永久变形
回弹率
拉伸长度
伸长率
海绵压陷硬度试验机又称之为海绵压缩试验机、泡沫压陷硬度试验机,“海绵疲劳测试仪”、可进行金属与非金属、高分子材料等的拉伸、压缩、弯曲、低周疲劳等项目的检测,可根据客户产品要求按GB、ISO、ASTM、JIS、EN等标准编制,能自动求取最大试验力,断裂力,屈服力,抗拉强度,抗压强度,弯曲强度,弹性模量,伸长率,定伸长应力,定应力伸长等参数。由试验主机和控制系统两部分组成,仪器采用计算机控制,能够全程按照标准测试数据,所有的操作在软件里操作,试验方便,操作简单。可对试验过程中的各种数据进行快速、准确的采集、处理,并可保存历史数据、生成自定义报表、打印.
测试仪器符合GB/T10807-89,ISO 2439-1980标准
l GB/T 10802软质聚氨醋泡沫塑料
l GB/T 10807-2006 软质泡沫聚合材料 硬度的测定(压陷法)
l GB/T 12825-2003 高聚物多孔弹性材料 凹入度法硬度测定
l GB/T 18942.1-2003 高聚物多孔弹性材料 压缩应力应变特性的测定 第1部分 低密度材料
l ASTM D3574 软质多孔材料--板、粘合及模制聚氨酯泡沫试验方法
l GBT 26392-2011 慢回弹泡沫 复原时间的测定
1、样品边长380+200mm,厚度为(50±2)mm,小于测试厚度应叠加到测试厚度;
2、如果试样的泡孔结构具有方向性,则压陷力所施加的方向应由供需双方商定。通常,试验时的压陷方向
应与产品实际使用时的受力方向一;
3、材料在生产后放置72h后方可进行试验,可以证明经放置16h或48h与72h的试验结果之差不大于士10%,试验可以在放置16h 或 48h后进行;
4、试验前将试样放在不受弯曲变形和破坏的条件下,选择GB/T2941-1991给定的下列其中一种环境条件,进行不少于16h的状态调节;
l 温度∶(23士2)℃,相对湿度∶(50士5)%;
l 温度∶(27士2)℃,相对湿度∶(65士5)%;
根据GBT 10807-2006 软质泡沫聚合材料 硬度的测定(压陷法)A法、B法、C法进行测试;
设置参数:
1. 测试速度:100min/mm
2. 试样厚度:50mm
预压:
对试样施加5N的力量,记录其厚度,以100min/mm的速度压入试样70%,以同样的速度卸载,执行三次;
无论是A法、B法、C法都要执行该步骤;
A法:
预压结束后,立马开始开始压陷试样厚度40%,保持变形,等待30s,记录相应的力值;
B法:
1. 预压结束后,立马开始压入试样厚度25%,保持变形,等待30s,测量力值;
2. 增加压力,压入试样40%,保持变形,等待30s,测量力值;
3. 继续增加压力,压入试样65%,保持变形,等待30s,测量力值;
C法:
预压结束后,立马开始压陷试样厚度40%,记录瞬时最大力值,然后卸载;
注意:此方法是校验压陷硬度;
根据GB/T10802-2006标准
1、产品按25%压陷硬度分8个等级,为245N,196N,151N,120N,93N,67N,40N,22N。
2、产品按恒定复合反复压陷疲劳性能分为AP,BP,CO,DP四种(此类不做介绍)
关键词:光伏 EVA TGA VA 含量 热重分析仪
热重分析法是在程序测温下,测量物质的质量 随温度变化的关系。可用于表征物质的质量随温 度 的变化特性,分析物质由于分解、氧化或脱水等 而引起的质量变化。EVA 在 250℃以上时发生热 分解, 首先 EVA 中的醋酸基团脱落而分解出醋 酸,分解出的醋酸的量与 EVA 中的 VA 含量成 正比。本方法 利用 EVA 热分解时质量随温度变 化的关系测定 EVA 中的 VA 含量。
炭黑是橡胶工业不可缺少的原料其用量仅次于生胶是一种最有效的、被广泛应用的补强剂.炭黑能改进硫化胶的性能提高胶料的硬度、模量、断裂能量、抗张强度、抗撕裂、耐疲劳和耐磨耗性能。
适用以下橡胶测试
l 天然橡胶或异戊橡胶;
l 顺于橡胶;
l 丁苯橡胶;
l 丁基橡胶;
l 丙烯酸酯橡胶;
l 乙丙橡胶;
l 聚醚;
l 衍生的聚乙烯化合物;
l 硅橡胶;
l 氟硅橡胶;
l 氯磺化聚乙烯(氯的质量分数小于30%)。
GBT 3515-2005 橡胶 炭黑含量的测定 热解法
1、从样品中取至少1.5g样品,最好从多个部位取样,具有代表性。
2、橡胶通过辊距不超过0.5mm的开炼机6次,从压出胶片上剪下约0.1g~0.5g试样,样品如果不能均匀的通过开炼机,那么将样品切成每边不超过1mm的小块。
3、称取试样精确至0.1mg,并记录这个质量m0。
4、用滤纸包好试样,用丙酮(4.4)抽提4h或直到与试样接触的抽提液无色为止。如果胶料中含有沥青,则用二氯甲烷抽提4h或直到与试样接触的抽提液无色为止。未硫化的胶料不能用二氯甲烷抽提,可以采用ETA(4.5)代替丙酮和二氯甲烷。
注∶如果胶料含有丙酮中不能完全溶解的材料如沥青,才需要用二氯甲烷抽提。称样前将试样剪碎有利于抽提,为此可以让试样在最小银矩下通过开炼机。
7.3 从滤纸中取出已抽提过的试样放在100℃±3℃烘箱中烘干,至溶剂挥发尽。
1、定量地将干燥后的试样放入石英舟内,再放入燃烧管靠近氮气入口处。
2、设备加热至850℃±25℃,但让石英舟处在燃烧管冷端,管子的另一端与气体吸收装置相连。
3、将氮气以200 cm²/min 流量通入燃烧管,通氮5min 以上,以便清除燃烧管内的空气。
3、降低氮气流至约100cm3/min,在5min之内慢慢将石英舟移到燃烧管加热区。
4、让石英舟放在加热区保持5 min,使试样完全裂解。
5、石英舟移到燃烧管的冷端冷却10min,并保持燃烧管继续通氮气。
将石英舟放入干燥器内,待完全冷却后,称量(精确至0.1mg),记录此数据m1。
6、再将石英舟放到燃烧管内用入口连接器关上燃烧管,并将进气系统侧管与氧气或空气源相连,让通过的气体流量达到100cm³/min,将石英舟移至加热区,直到所有炭黑被完全燃尽。
7、把石英舟移入干燥器内,冷却至室温,称石英舟精确至0.1 mg,记录此数据 m2。
炭黑含量以炭黑的质量分数X计,数值以百分数表示,按下式计算∶
式中∶
m——试样的质量,单位为克(g);
m———氮气中加热后石英舟和内容物的质量,单位为克(g);
m——在氧或空气中炭黑燃烧后石英舟和残留物的质量,单位为克(g)。
注1∶试样可以从预先已抽提过的胶料中得到,此时由溶剂抽出量的修正可以获得试样质量mo。
注2∶若市场购买炭黑中含有任何在850℃下可挥发物质,它在氮气中裂解时亦会失去。因此,所求炭黑含量最终结果亦会少于这个量,此时若炭黑类型和厂家是已知的,则可以进行适当修正。
]]>氧化诱导期OIT是指稳定化材料耐氧化分解的一种相对度量。是由量热测量材料在某一特定温度常压氧气气氛下起始氧化放热的时间间隔来确定的。
加油抗氧化稳定剂体系的试样处于某一种特定恒温的氧气流下,测量其抑制氧化时间。OIT是对所试材料稳定化水平(等级)的一种评价,它与试样可氧化的表面积有关。