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最低成膜温度测定仪

该仪器是目前国内好的一款低成膜温度测定仪能够简单、直观、准确地测定聚合物乳液低成膜温度。

  • 型号:DM-II

  • 产品参数
  • 型号:DM-II

 

一,产品简介:
该仪器是目前国内好的一款低成膜温度测定仪能够简单、直观、准确地测定聚合物乳液低成膜温度。
执行标准:GB/T9267-2008以及ISO2115-76标准。用于测定聚合物乳液和界面处理剂的低成膜温度,采用多路巡检数显显示器,控温数据准确,校准方便。
irst, the product introduction:
The instrument is currently the best minimum film forming temperature measuring instrument in China, which can determine the minimum film forming temperature of polymer emulsion simply, intuitively and accurately.
Implementation standards: GB/T9267-2008 and ISO2115-76 standards. It is used to determine the minimum film forming temperature of polymer emulsion and interface treatment agent. It adopts multi-channel patrol digital display, accurate temperature control data and convenient calibration.

二,技术参数:
梯度板温度范围:-10℃~50℃之间任意调节
梯度间隔:20 mm
梯度板检测点:13点
试验涂料槽:6条(长度 240mm,宽度 22mm,深度 0.25mm)
巡检表显示:16点,其中1~13点为工作梯度温度,14点为仪器环境温度,15、16点为冷却水进出口温度
外形尺寸:518X518X375mm
    重量:31kg
Second, technical parameters:
 Gradient plate temperature range: arbitrarily adjusted between -10 °C and 50 °C
 Gradient spacing: 20 mm
 Gradient board detection point: 13 points
 Test paint tank: 6 strips (length 240mm, width 22mm, depth 0.25mm)
 Patrol meter display: 16 points, of which 1 to 13 points are the working gradient temperature, 14 points is the instrument ambient temperature, and 15 and 16 points are the cooling water inlet and outlet temperature.
 Dimensions: 518X518X375mm
 Weight: 31kg

三,工作原理:
在一块适宜的金属板上分别设置制冷源和加热源,并且保持在其设定温度的恒温点上,通过金属热传导原理,在金属板上产生不同的温度梯度。在该温度梯度板上涂布均匀厚度的样品,样品受梯度板上温度蒸发水分而成膜。由于梯度板上的温度不同而导致样品成膜的现象也不同。找到分界线部分即是该样品的MFT温度。
聚合物乳液用作涂料、粘合剂、化纤织物、皮革和纸张等表面处理剂时,它的成膜性是重要的性质之一。将聚合物乳液或乳胶漆涂布在金属板上,水份蒸发后,聚合物粒子相互作用,在适宜的温度下形成连续的透明的薄膜。临界成膜时的极限温度即被称之为该聚合物乳液的低成膜温度,简称MFT温度。
用于测定聚合物乳液的低成膜温度,聚合物乳液用作涂料、粘合剂、化纤织物、皮革和纸张等表面处理剂时,它的成膜性是重要的性质之一。将聚合物乳液或乳胶漆涂布在金属板上,水份蒸发后,聚合物粒子相互作用,在适宜的温度下形成连续的透明的薄膜。临界成膜时的极限温度即被称之为该聚合物乳液的低成膜温度,简称MFT温度。
Set a cooling source and a heating source on a suitable metal plate, and keep it at a constant temperature point of its set temperature. Through the metal heat conduction principle, different temperature gradients are generated on the metal plate. A sample of uniform thickness is applied to the temperature gradient plate, and the sample is formed by evaporation of moisture from the gradient plate. The phenomenon of film formation of the sample is also different due to the difference in temperature on the gradient plate. The portion of the boundary line is found to be the MFT temperature of the sample.
When a polymer emulsion is used as a surface treatment agent for paints, adhesives, chemical fiber fabrics, leather, and paper, its film formability is one of the most important properties. The polymer emulsion or latex paint is coated on a metal plate, and after evaporation of the water, the polymer particles interact to form a continuous transparent film at a suitable temperature. The ultimate temperature at the time of critical film formation is called the minimum film forming temperature of the polymer emulsion, abbreviated as MFT temperature.
 It is used to determine the minimum film forming temperature of polymer emulsion. When polymer emulsion is used as surface treatment agent for coatings, adhesives, chemical fiber fabrics, leather and paper, its film forming property is one of the most important properties. The polymer emulsion or latex paint is coated on a metal plate, and after evaporation of the water, the polymer particles interact to form a continuous transparent film at a suitable temperature. The ultimate temperature at the time of critical film formation is called the minimum film forming temperature of the polymer emulsion, abbreviated as MFT temperature.

四,使用方法:
打开包装箱,(包装箱可以反复利用,请妥善保管,以便以后维修运输之用)检查一下有无破损短缺现象。核实后,将仪器安放在试验室靠近上下水之处,先做一下清洁工作。然后查看电源输入,进出水口接牢无误。
使用前的准备工作:
开机:
将电源线接入电源插座(220 伏,50Hz 三孔插座,必须接地良好),接通冷却水,依次接通总电源开关、加热、巡检、制冷开关,仪器面板立即显示出相应动作(指示灯亮,数显表显示数字)。
调试仪表:
根据所测试漆膜条件不同,需设置不同测试条件。主要是制冷和加热预置(设置方法见 LU-906M 智能调节器使用说明书),巡检表在出厂前已调好,一般情况下不需调整。
热平衡:
时间约在 120 分钟左右(视设定温度而定,若发现巡检表在一定时间内 1 13 各点显示稳定或变化极小即为预热完成)方可加入试样。平衡时间取决于低温度设定,温度设定越低,平衡时间则越长。干燥剂同时放入盒中,可以较大限度避免水蒸气以及冷端结冰。
样品准备:
取下玻璃罩用小勺或滴管将待测和已知乳液注入梯度板槽内,再用涂布器涂平,盖好玻璃罩。(玻璃制品,请轻拿轻放)
样品成膜:
大约经过 60 90 分钟,梯度板上的涂层发生一系列的变化,乳胶漆用乳液水分蒸发后,聚合物分子相互作用,在适当温度下形成连续薄膜,高于该乳液 MFT 的部分成膜透明,低于 MFT 的部分发生龟裂或产生白垩现象。这个明显的分界线即为该乳液的低成膜温度(MFT)确定成膜线后,根据其位置,用标尺的细分刻度计算出准确温度。
Fourth, the method of use:
Open the packing box. (The packing box can be reused. Please keep it in a safe place for future maintenance and transportation.) Check for any shortage of damage. After verification, place the instrument in the test room near the water and discharge, and do the cleaning work first. Then check the power input and the inlet and outlet are secure.
Preparation before use:
Boot:
Connect the power cord to the power socket (220 volt, 50Hz three-hole socket, it must be well grounded), turn on the cooling water, turn on the main power switch, heating, inspection, and cooling switch in turn, and the instrument panel will display the corresponding action immediately. The light is on and the digital display shows the number).
Commissioning instrument:
Different test conditions are required depending on the conditions of the paint film being tested. Mainly for cooling and heating presets (see the LU-906M Smart Regulator Instruction Manual for the setting method), the inspection table has been adjusted before leaving the factory, and generally does not need to be adjusted.
Thermal equilibrium:
The time is about 120 minutes (depending on the set temperature, if the patrol table is found to be stable or the change is very small at a certain time within 1 to 13), the sample can be added. The equilibration time depends on the lowest temperature setting, and the lower the temperature setting, the longer the equilibration time. The desiccant is placed in the box at the same time, which can largely avoid water vapor and cold end icing.
ample preparation:
Remove the glass cover and use a small spoon or a dropper to inject the known and known emulsion into the gradient plate, and then flatten it with a coater to cover the glass cover. (Glass products, please take it lightly)
Sample film formation:
After about 60 to 90 minutes, the coating on the gradient plate undergoes a series of changes. After the emulsion paint evaporates with water, the polymer molecules interact to form a continuous film at a suitable temperature, which is higher than the partial film formation of the emulsion MFT. Transparent, cracking or chalkiness in parts below the MFT. The obvious dividing line is the minimum film forming temperature (MFT) of the emulsion. After determining the film forming line, the accurate temperature is calculated by the subdivision scale of the scale according to its position.

五,详细配置清单
主机:一台
有机玻璃罩:一个
电源线:一根(已装好)
梯度板:一个(已装好)
制冷源:一套(已装好)
加热管:一套(已装好)
风机:一个(已装好)
温控表:两个(已装好)
巡检表:一个(已装好)
温度探头:十八个(已装好)
导管:两根(已装好)
保险管:四个
说明书:一份
合格证:一份
Five, detailed configuration list
Host: one
Plexiglass cover: one
Power cord: one (already installed)
Gradient plate: one (already installed)
Cooling source: one set (already installed)
Heating tube: one set (already installed)
Fan: one (already installed)
Temperature control table: two (already installed)
Patrol form: one (already installed)
Temperature probe: 18 (already installed)
Catheter: two (already installed)
Insurance tube: four
Manual: one
Certificate of Compliance: One


 


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上海荣计达仪器科技有限公司

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地址:上海市闵行区浦江镇联胜路189号 

邮编:201112 

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