Shellac heat hardening time tester
Contact Info
- Add:No. 1, Yuanjiang Road 5500, Minhang District, Shanghai, Zip:
- Contact: 高洁
- Tel:13761436048
- Email:3982822529@qq.com
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The YJ-8143A Shellac Thermal Hardening Time Tester is designed and manufactured in accordance with the requirements specified in the determination of thermal hardening time in the standard GB/T 8143 "Methods for Inspection of Shellac Products", and is suitable for determining the thermal hardening time of shellac by the method specified in the standard. Test Principle: Shellac undergoes dehydration and polymerization when heated. The thermal hardening time refers to the time required for shellac to polymerize under specified conditions.
I. Main Technical Features of the YJ-8143A Shellac Thermal Hardening Time Tester
1. This instrument consists of a closed electric furnace, a test plate, a picking needle, etc. It has a small volume and occupies little space.
2. The closed electric furnace adopts an integrated structure with a magnesium-aluminum alloy heating plate, which has a short heating time, a long service life, and the whole instrument has an elegant design.
3. The temperature control uses an adjustable LCD digital display controller, which has small temperature overshoot and stable and accurate temperature control.
4. Test Procedure: Weigh 0.05g±0.001g of the sample that has passed through a sieve with an aperture of about 0.4mm (equivalent to 40 mesh), and evenly place it in the concave part of the copper block of the thermal hardening tester at a temperature of 170℃±0.5℃. When the sample is completely melted, start the stopwatch immediately. The test needle forms an angle of about 30° with the horizontal plane, and stirs at a speed of 60r/min with the needle tip. When approaching the end point, use the needle tip to pick the sample. When the test needle can pick the sample off, that is the end point. Stop the stopwatch immediately, and the time recorded by the stopwatch is the thermal hardening time. Test each sample 2 to 3 times, and take the shorter time among the two times with a difference within 5s as the standard. If the difference exceeds 5s, retest until it meets the requirements.
II. Main Technical Indicators and Parameters
1. Rated Power: 1200W;
2. Rated Voltage: AC(220±10%)V, 50Hz;
3. Maximum Temperature: 300℃;
4. Plate Material: Magnesium-aluminum alloy with polytetrafluoroethylene coating;
5. Temperature Control Accuracy: 0.5℃;
6. Temperature Control: LCD temperature controller;
7. Heat Conduction Module: Q235 carbon steel, formed by one-time processing;
8. Sample Heating: H62 brass;
9. Sample Picking Needle: 304 stainless steel;
10. Mercury Thermometer: 150-200℃, with each scale being 0.1℃;
11. Timing Stopwatch: With an accuracy of 0.2s;
| Industry Category | Instruments & Meters/Laboratory Instrument Devices/Other Lab Instruments |
|---|---|
| Product Category | |
| Brand: | 仪訮 |
| Spec: | YJ-8143A |
| Manufacturer: | 仪研智造（上海）药检仪器有限公司 |
| Origin: | 113112 |
