The driving safety recorder can record the car in detail, which is equivalent to a "black box" of the car. In general, the price of a traffic safety recorder is within a thousand dollars, and ordinary car owners can afford it. What problems should you pay attention to when choosing a safety recorder? Let's take a look at some of the things that professionals share with you about what you should be aware of when choosing a safety recorder.

行车安全记录仪

First, the range of distances that can be effectively recorded. When selecting a safety recorder, the first thing to notice is the effective recording range of the recorder. For example, it can be clearly recorded within fifteen meters, especially the license plate number of the preceding vehicle, which is meaningful. If the license plate number at a short distance cannot be recorded, then the function of such a traffic safety recorder is also limited. If there is a touch of porcelain, it should be able to accurately record all the processes, which has a high requirement for the recording method of the safety recorder. When selecting, try to select the driving safety recorders that have a large range of records and clear record contents. Such devices can ensure the safety.

Second, the performance of the vehicle safety recorder battery. The general driving recorder work is driven by the internal battery, in addition to this battery also provides energy support for the lights on the recorder. Therefore, when choosing, pay attention to the quality and capacity of the battery, and the quality and safety of the battery is also very important, because the temperature in the car will reach about 50 degrees in the summer. If the battery quality is not good, it will cause an explosion. In the event of an emergency, we can use the lighting function of the driving recorder, but it is not recommended to use it for a long time. This will make it easy to drain the battery and affect the recorder's work.

Third, how to drive the vehicle safety recorder in the car. Choosing driving recorders should also pay attention to the wiring conditions. For example, some cables can only be used when driving, and some complicated wiring can be monitored 24 hours a day. There is a certain difference in the wiring, it is recommended that everyone should consult clearly when purchasing, according to the needs of the purchase.


Nb2AlC

Niobium Aluminum Carbide

Basic Information:

1. Chemical formula: Nb2AlC

2. Constituent elements: Nb, Al, C

3. Molecular weight: 224.793

4. Chemical status: particles of micro and nano size

5. Appearance and character: dark brown particles with micro and nano size

Product performance index:

1. Crystal structure: Hexagonal, P63/ MMC [194]

2. Cell parameters:

A =3.103 A, B =3.103 A, C =13.83 A;

α=90, β=90, γ=120;

3. PDF No.:#30-3033 (refer to International Diffraction Data Center PDF-2004 database);

4. Density: 6.47(g/cm3);

Storage conditions and validity:

This product should be stored in room temperature and dry place, avoid contact with acid, alkali and other liquids, long-term storage will happen slow oxidation.

Test method:

This product can be confirmed by X-ray powder diffractometer crystal results; Element composition was confirmed by energy dispersive X-ray detector. The same morphology characterization was used to characterize the particle morphology. The particle size distribution was evaluated by laser particle size analyzer.



Safety protection:

1. Health hazards

Hazardous category: Non-hazardous chemical chemical category: ceramic powder;

Route of invasion: inhalation, ingestion;

Health hazards: dust in the eye has irritation, oral stimulation of gastrointestinal tract;

2. First aid measures

Skin contact: Remove contaminated clothing and rinse skin thoroughly with running water.

Eye contact: lift eyelid and rinse with plenty of running water or normal saline for at least 15 minutes;

Inhalation: Get away from the scene to fresh air quickly;

Ingestion: drink enough warm boiled water, induce vomiting, seek medical advice;

3. Ignition and explosion characteristics and fire protection

Flammability: non-flammable;

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