ClanSoxhlet extractor is a method of extracting compounds from solid substances, mainly used for the determination of crude fat content, widely used in the extraction of grain, feed, oilseeds, soil, gross fat and other sample fat content, can be used as an indicator to identify its quality, is China's food, grain, oil and soil analysis and other preferred standard method, our company combined with customer requirements, the introduction of dry heating extraction, greatly accelerated the extraction speed, saving experimental time, applicable jt t 533-2020 "Asphalt Pavement Fiber" Granular lignin fiber oil absorption rate, granulant content and rotational viscosity test, this instrument adopts cable extraction technology and integrated metal bath heating method, which can complete the work of heating extraction, leaching and solvent at the same time, and is a fully functional and easy-to-use fiber automatic cable thermal extractor.
Each specimen is weighed first (m. For the asphalt waterproofing membrane with powdery surface isolation material, the specimen first brushes off the surface isolation material with a soft brush, and then weighs the specimen (m;)。The specimen is wrapped in a dry filter paper, tied with a thread, and its mass (m,) is weighed. Put the bandaged specimen into the benzene extractor, the amount of solvent is 1 2 2 3 of the flask capacity, heat it, take it until the refluxed solvent turns light for the first time, carefully take out the paper packet, do not break, and place it in the air for more than 3 min to volatilize the agent. Then let it dry in a blast oven with (105+2)C for 2 h, and then take it out and put it into a dry blaster to cool until it is wet.
Take out the filter paper package from the dryer and weigh (m), then open the filter paper package on the sample sieve, put a container below, and then brush off the powder on the surface of the tire base in the paper bag and weigh the tire base (m, >. Spread the specimen until no material falls, throw away the filter paper and tie the wire, and weigh the mass of the material left on the screen (m;), weigh the mass of material under the sieve (m. For the fetal base with loose surface (such as poly fel, glass fiber felt, etc.), put the weighed fetal base (m) into the ultrasonic cleaning pool for cleaning, take out the (105 ±2) c and bake it for 1 h, and then put it in a dryer to cool to room temperature, and weigh its mass (m;)
Test method for building waterproofing membrane.
Part 26: Soluble content of asphalt waterproofing membrane (dip material content).
1 range. This part of GB T328 specifies the method for determining the soluble content of asphalt surface waterproofing membrane or the total amount of dipping material.
2. Normative references.
The terms in the following documents are incorporated into this section by reference in this section of GB T328 and all subsequent amendments (excluding errata) or revisions of dated documents are not applicable to this part, however, parties to an agreement under this standard are encouraged to investigate the possibility of using the most recent versions of these documents. For undated references, the most recent version of the document is applicable to this Division.
gb/t328.1 Test method for building waterproofing membrane Part 1 Sampling rules for asphalt and polymer waterproofing membrane.
3Terms and Definitions.
The following terms and definitions apply to this section of the GB T328.
Diffuse coating material impregnated and coated asphalt amount
In addition to the surface isolation material and tire base, the material dissolved by the solvent and the quality of the membrane filling can be determined in the waterproofing membrane per unit area.
Soluble content dissolable composite of membrane
A mass tray of materials that can be dissolved by a selected solvent in a waterproofing membrane per unit area.
4 Principle. After the specimen is extracted in the selected solvent until it is complete, take out the solvent to volatilize, and then dry to obtain the soluble substance, and the remaining part after drying passes through the specified sieve for the quality of the filler, and the remainder is the quality of the isolation material, and the quality of the tire base is obtained after removing the powder on the tire base.
5 instrument equipment. 5.1 minute balance weighing range greater than 100 8 accuracy 0001g
5.2 extractors 500ml violet lifter.
5.3. Blower oven degree fluctuation soil 2c
5.4. The sieve hole of the sample is 315pm or other screen with specified pore size.
5.5. Solvent tri-B marriage (chemically pure) or other suitable solvents.
5.6. The diameter of the paper is not less than 150 mmn
6. Sampling. Sampling was carried out according to GB T3281.
7. Preparation of specimens.
For the entire test, 3 specimens should be prepared.
Product features:17-inch large LCD touch screen display control, upgradable program control temperature and remote operating system.
2.The 4-position integrated metal bath heating system ensures that each sample can be operated independently.
3.Aviation aluminum heating module, fast heating rate, fast reflow speed, greatly shorten the extraction time.
4.Imported temperature sensor, high temperature control accuracy, good uniformity.
5.It has the functions of heating extraction and leaching solvent, which greatly saves experimental consumables.
6.Built-in circulating water pipeline, simple and convenient operation (can be upgraded to built-in cooling device).
7.It has multiple protection devices for overvoltage, overheating and leakage, which does not need to be supervised to ensure that the machine is used for a long time.
security. 8.External cryogenic cooling water circulation system. Circulatory system with timing and time control;Fully automatic control of cooling water. Good refrigeration.
Product parameters:
withCryostat circulator
Technical parameters
The air-cooled fully enclosed compressor unit refrigeration and microcomputer intelligent control system of the low-temperature thermostat circulator has the function of providing high and low temperature liquid and high and low temperature water bath to meet the needs of cooling water and high-temperature liquid to cool down or other instruments at constant temperature. It is also possible to carry out low-temperature and constant temperature experiments directly in the tank with various volumes. Cryostat circulatorIt can be equipped with rotary evaporator, low-temperature chemical reactor, freeze-dryer instrument, double-layer glass reactor, ultraviolet spectrophotometer, magnetic stirrer and other instruments for circulating refrigeration to carry out multi-functional chemical reactions, biological reactions, drug reactions, etc. at low temperatures.
Key features:
Fully enclosed imported refrigeration compressor, fluorine-free refrigeration system and with overheating, overcurrent, etcOverpressure and other multiple protection devices.
The low-temperature thermostat circulator has the function of internal and external circulation, and the circulating pump can lead the medium in the tank to the outside to establish a second constant temperature field, which plays the role of cooling or constant temperature of the experimental vessel.
It adopts the latest generation of imported automatic PID temperature setting program and imported temperature sensor, with high temperature control accuracy.
High-precision temperature control technology coupled with U-shaped dual circulation system improves temperature uniformity.
The large screen LCD is displayed in Chinese and English, the data is clear, the appearance is beautiful, and the personalized interface makes the industrial control no longer monotonous.
Cryostat circulatorThe body shell adopts mirror anti-aging electrostatic painting technology, and the inner table top is made of high-quality S304 stainless steel, which is clean and hygienic, beautiful and corrosion-resistant.
There is a drain valve on the side to facilitate the replacement of the medium.
Built-in multiple device protection devices:
1.Over-temperature protection device, buzzer alarm.
2.The whole machine has the function of power-off protection.
3.It has the function of low water level protection and buzzer alarm to prevent the machine from failing due to the drying of the medium in the tank and the explosion-proof function of the heating pipe.