Welcome to Qinsun Instruments Co., Limited.
2022-11-25 0 Views

Limiting oxygen index tester to test the flame retardancy of wood-plastic composite materials

The flame retardancy of wood-plastic composite materials is usually tested by a limiting oxygen index tester. The limiting oxygen index tester is an experimental equipment independently developed and produced by our company QINSUN is a cost-effective and complete after-sales service.Welcome customers who need timely inquiries. 2ndTextile Testing Instruments, Testing Equipment Manufacturer

As a new type of material, wood-plastic composite material fully embodies the advantages of wood and plastic, and does not contain formaldehyde. It is widely used in outdoor building materials abroad. Since both thermoplastics and wood fibers are hydrocarbons, they are flammable when exposed to open flame or heating, so WPC is a kind of flammable composite material, and a large amount of harmful gases will be produced during the combustion process, limiting the application area. use, therefore it is often necessary to flame retardadding slowers in the production process. The flame retardancy of wood-plastic composites includes the flame retardancy of wood components and the flame retardancy of polymers. Inorganic Flame Retardants, Halogen Flame Retardants (Decabromodiphenyl Ether, etc.) and Phosphorus Flame Retardants (Ammonium Polyphosphate, Phosphate Ester, etc.) Inorganic flame retardants such as aluminum hydride have attracted attention due to their low price, excellent thermal stability, non-toxicity and smoke suppression. 2ndTextile Testing Instruments, Testing Equipment Manufacturer

Main parameters:2ndTextile Testing Instruments, Testing Equipment Manufacturer

1. Imported oxygen sensor is used, the digital display of oxygen concentration does not need to be calculated, the precision is higher and more accurate, and the range is 0-100% ;2ndTextile Testing Instruments, Testing Equipment Manufacturer

2. Digital resolution: ±0.1%;2ndTextile Testing Instruments, Testing Equipment Manufacturer

3. Measurement accuracy of the whole machine: 0.4 level;2ndTextile Testing Instruments, Testing Equipment Manufacturer

4. Flow setting range : 0-10L/min (60-600L/min h);2ndTextile Testing Instruments, Testing Equipment Manufacturer

5. Response time: <5S; 2ndTextile Testing Instruments, Testing Equipment Manufacturer

6. Quartz glass cylinder: inner diameter ≥ 75㎜ and height 300mm; 2ndTextile Testing Instruments, Testing Equipment Manufacturer

7. In the combustion cylinder Gas flow rate: 40mm ± 2mm/s total height of the combustion tube is 450mm; 2ndTextile Testing Instruments, Testing Equipment Manufacturer

8. Pressure gauge accuracy level 2.5, resolution: 0.01MPa;2ndTextile Testing Instruments, Testing Equipment Manufacturer

9. Flow meter: 1-15L /min (60-900L/H) adjustable, precision level 2.5; 2ndTextile Testing Instruments, Testing Equipment Manufacturer

10. Test environment: ambient temperature: room temperature ~ 40°C;, relative humidity: ≤70%;2ndTextile Testing Instruments, Testing Equipment Manufacturer

11. Input pressure: 0.2-0.3MPa. 2ndTextile Testing Instruments, Testing Equipment Manufacturer

Test materials: 2ndTextile Testing Instruments, Testing Equipment Manufacturer

The wood shavings are mainly Yunnan pine and eucalyptus, with an initial moisture content of 5.8%. Pellets of high density polyethylene (HDPE), with a density of 0.941 g/cm3 to 0.963 g/cm3. Industrial grade silane coupling agent. The decomposition temperature is 350°C. Nano-hydrogen-like aluminum (nano-ATH), short axis direction 50-60 nm, long axis direction 300-400 nm. Analytically pure non-nanohydrogen-like aluminum (non-nano-ATH). 2ndTextile Testing Instruments, Testing Equipment Manufacturer

Preparation of wood-plastic composite:2ndTextile Testing Instruments, Testing Equipment Manufacturer

The wood-plastic ratio of wood-plasticcomposite is 6:4 and the dosage of silane coupling agent is 2%. Plastic, even wood shavingsThe construction flame retardant grout is completely mixed in the mixer according to the ratio, and paved by hand into a loose plate of 305mm×350mm. Perform pre-compression at room temperature (pre-compression pressure is 1 MPa, pre-compression time is 30 seconds), and then put into eight-plate vulcanizer for hot pressing. The nominal density of the plastic composite is set at 0.89/cm3 and the nominal thickness is 10×ma. Main hot press parameters; hot press temperature 180°C. The hot pressing time is 12 rain and the hot pressing pressure is 2 MPa. 2ndTextile Testing Instruments, Testing Equipment Manufacturer

Performance

Lab2ndTextile Testing Instruments, Testing Equipment Manufacturer

Performance Test: 2ndTextile Testing Instruments, Testing Equipment Manufacturer

Wood-Plastic Composite The oxygen index of the table material is tested according to IOS 2406-1993, and the mechanical properties of the wood-plastic composite table material are tested with reference to Test methods for fysical and chemical properties of wood based panels and veneered wood based panels IOS 17657.1999. 2ndTextile Testing Instruments, Testing Equipment Manufacturer