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
Other Products
YJ-8143A Lac Heat Hardening Time Tester is designed and manufactured in accordance with the requirements specified in the determination of heat hardening time in the standard GB/T 8143 "Methods for Inspection of Lac Products", and is applicable to the determination of the heat hardening time of lac by the method specified in the standard. Test Principle: Lac undergoes dehydration and polymerization when heated. The heat hardening time refers to the time required for the polymerization of lac under specified conditions.
I. Main Technical Features of YJ-8143A Lac Heat 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, long service life and beautiful overall design.
3. The temperature control uses an adjustable LCD digital display controller, with small temperature overshoot and stable and accurate temperature control.
4. Test procedure: Weigh 0.05g ± 0.001g of the sample passing through a sieve with a pore size of about 0.4mm (equivalent to 40 mesh), and evenly place it in the copper block recess of the heat hardening tester at a temperature of 170℃ ± 0.5℃. Start the stopwatch immediately when the sample is completely melted. The test needle is at an angle of about 30° to the horizontal plane, and stir with the needle tip at a speed of 60r/min. When approaching the end point, use the needle tip to pick the sample. When the test needle can pick the sample away, it is the end point. Stop the stopwatch immediately, and the time recorded by the stopwatch is the heat 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 of YJ-8143A Lac Heat Hardening Time Tester
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 liquid crystal 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 |
