Introduction
Melt-blown cloth has the characteristics of small pore size, high porosity and high filtration efficiency, and is the core material of mask production. This instrument refers to GB/T 30923-2014 plastic Polypropylene (PP) Melt-blown Special Material, suitable for polypropylene as the main raw material, with di-tert-butyl peroxide (DTBP) as the reducing agent, modified polypropylene melt-blown special material.
Methods the principle
The sample is dissolved or swollen in toluene solvent containing a known amount of n-hexane as internal standard. An appropriate amount of solution was absorbed by microsampler and directly injected into gas chromatograph. Under certain conditions, gas chromatographic analysis was carried out. DTBP residue was determined by internal standard method.
Instrument use:
Particle tightness (suitability) test for determining masks;
Standards compliant:
GB19083-2010 technical requirements for medical protective masks Appendix B and other standards;
Adopt the parallel lighting, hemispherical scattering, and integral ball photoelectric receiving mode. The microcomputer automatic controls test system and data processing system, convenient operation, no knob, and a standard print output pull, automatically display the average value of transmittance /haze repeatedly measured. The transmittance results is up to 0.1﹪and the haze degree is up to 0.01﹪.
Adopt the parallel lighting, hemispherical scattering, and integral ball photoelectric receiving mode. The microcomputer automatic controls test system and data processing system, convenient operation, no knob, and a standard print output pull, automatically display the average value of transmittance /haze repeatedly measured. The transmittance results is up to 0.1﹪and the haze degree is up to 0.01﹪.
Used for testing the thermal resistance of all kinds of fabrics under normal conditions and physiological comfort.
LH-B Rheometer is controlled by computer. Imported temperature controller controls temperature accurately. The computer can process data in time and carry out statistics, analysis, storage and comparison. It is humanized design, easy to operate and accurate data. It provides the most accurate data for optimum formulation of rubber.The mouse button on the computer of this vulcanizer has the same function as the button on the main panel, so that users can operate it easily.
Our this hand sheet former is applicable to research and experiments in papermaking research institutes and paper mills.
It forms pulp into a sample sheet, then puts the sample sheet on the water extractor for drying and then carries out the inspection of the physical intensity of the sample sheet to appraise the performance of the raw material of pulp and beating process specifications. Its technical indicators conform to the international & China specified standard for papermaking physical inspection equipment.
This former combines vacuum-sucking & forming, pressing, vacuum-drying into one machine, and all-electric control.
Our this hand sheet former is applicable to research and experiments in papermaking research institutes and paper mills.
It forms pulp into a sample sheet, then puts the sample sheet on the water extractor for drying and then carries out the inspection of the physical intensity of the sample sheet to appraise the performance of the raw material of pulp and beating process specifications. Its technical indicators conform to the international & China specified standard for papermaking physical inspection equipment.
This former combines vacuum-sucking & forming, pressing, vacuum-drying into one machine, and all-electric control.
The HDT VICAT TESTER is used to determine Heating deflection and Vicat softening temperature of the plastic, rubber etc. thermoplastic , It is widely used in the production, research and teaching of plastic raw materials and products. The series of instruments are compact in structure, beautiful in shape, stable in quality, and have the functions of discharging odor pollution and cooling. Using advanced MCU (multi-point micro-control unit) control system, automatic measurement and control of temperature and deformation, automatic calculation of test results, can be recycled to store 10 sets of test data. This series of instruments have a variety of models to choose from: automatic LCD display, automatic measurement; micro-control can connect computers, printers, controlled by computers, test software WINDOWS Chinese (English) interface, with automatic measurement, real-time curve, data storage, printing and other functions.
The HDT VICAT TESTER is used to determine Heating deflection and Vicat softening temperature of the plastic, rubber etc. thermoplastic , It is widely used in the production, research and teaching of plastic raw materials and products. The series of instruments are compact in structure, beautiful in shape, stable in quality, and have the functions of discharging odor pollution and cooling. Using advanced MCU (multi-point micro-control unit) control system, automatic measurement and control of temperature and deformation, automatic calculation of test results, can be recycled to store 10 sets of test data. This series of instruments have a variety of models to choose from: automatic LCD display, automatic measurement; micro-control can connect computers, printers, controlled by computers, test software WINDOWS Chinese (English) interface, with automatic measurement, real-time curve, data storage, printing and other functions.
The HDT VICAT TESTER is used to determine Heating deflection and Vicat softening temperature of the plastic, rubber etc. thermoplastic , It is widely used in the production, research and teaching of plastic raw materials and products. The series of instruments are compact in structure, beautiful in shape, stable in quality, and have the functions of discharging odor pollution and cooling. Using advanced MCU (multi-point micro-control unit) control system, automatic measurement and control of temperature and deformation, automatic calculation of test results, can be recycled to store 10 sets of test data. This series of instruments have a variety of models to choose from: automatic LCD display, automatic measurement; micro-control can connect computers, printers, controlled by computers, test software WINDOWS Chinese (English) interface, with automatic measurement, real-time curve, data storage, printing and other functions.
Used for testing the thermal resistance of all kinds of fabrics under normal conditions and physiological comfort.