Flame retardant rating SE NBR what does it mean

The standards are different, and the values they represent are also different:

TL1010-2008 stands for flame length<=50mm burning time< 60s

NBR+PVC density: national standard 95, implementation standard GB T 6343 (B1 standard), non-standard B2 grade is generally around 50-60.

NBR+PVC is a hybrid foaming material of NBR and PVC, also known as rubber and plastic. Nowadays, the hybrid application of NBR+PVC is very extensive, and the combination of the two greatly increases the plasticity of the process product.

NBR+PVC is a hybrid foaming material blended with rubber and plastic. NBR is the abbreviation of nitrile rubber, and PVC is the abbreviation of polyvinyl chloride. The blend rubber made of NBR+PVC blend is the main rubber type used in rubber and plastic.

The main advantages of NBR+PVC blend adhesive are that it has both the ozone resistance of PVC and the oil resistance and cross-linkability of NBR, and has certain flame retardant properties, good physical and mechanical properties, and its main raw material PVC is rich and cheap, so it is widely used.

NBR+PVC blend adhesive is mainly used for oil pipe and fuel pipe outer layer glue, wire and cable sheath, oil-resistant conveyor belt, automotive seals, rubber rollers and rubber rings, automotive molded parts, microporous sponges, foam insulation layers, automotive waterproof strips, boot soles and protective coatings.

The flame retardant level is increased from HB, V-2, V-1 to V-0

1. HB: the lowest flame retardant grade in UL94 standard. Requires a burning rate of less than 40 mm per minute for samples between 3 and 13 mm thick; Samples less than 3 mm thick with a combustion rate of less than 70 mm per minute; Or extinguish in front of a 100mm sign.

2. V-2: After two 10-second combustion tests on the sample, the flame is extinguished within 60 seconds. Incendiary objects can fall.

3. V-1: After two 10-second combustion tests on the sample, the flame is extinguished within 60 seconds. No incendiary material can be dropped.

4. V-0: After two 10-second combustion tests on the sample, the flame is extinguished within 30 seconds. No incendiary material can be dropped.

The classification of flame retardant grades is different according to different standards.

In the building fire protection standard, it is divided into: A1, A2, B, C, D, E, F In the legal standard, there are points: M0, M1, M2, M3, M4 depending on which aspect of flame retardant you are.

Refer to: Fire Protection Resource Network.

According to the European standard, it is divided into 7 grades: A1, A2, B, C, D, E, F, F are the worst grades of flame retardant. A1 is best.

Flame retardant wire and cable Flame retardant wire and cable refers to blocking and delaying the spread of flames along the wire and cable, so that the fire does not expand, and this type of wire and cable has self-extinguishing performance after fire. Flame retardant cables can be divided into three grades according to the national experimental standard (GB12666-99): ZRA, ZRB, ZRC.

In general product naming, ZRA is usually represented by GZR, which is a high flame retardant cable or oxygen barrier cable or high flame retardant oxygen barrier cable. ZRC stands for ZR in general flame retardant products.

It depends on what kind of flame retardant you are, whether it is a finished product or a fabric, and it depends on the situation.

The material ** reminds you that the material is flame retardant grade V2, V1, V0, VB, VA

Hello, there is some disagreement about the question you said.

First of all, the three-proof cloth refers to the oil-proof, waterproof and anti-fouling, and has no flame retardant effect.

The division of flame retardant grades in the flame retardant test of the national standard is divided by grade A, grade B and grade C, and there is no such thing as S grade (Xinxiang Yulong Textile).

ann_cy1006

The answer is already more detailed, if it is not copied, it means that she understands it very well. You can also contact Qingdao Shanfang. They specialize in plastic flame retardant grade testing instruments (plastic horizontal and vertical combustion testers).

The vertical combustion test in UL94 is based on the test results of the sample burning time and whether the molten droplets ignite the absorbent cotton, and the polymer material is divided into four grades: V-2, V-1, V-0 and 5-V, of which V-2 is the lowest flame retardant grade and 5-V grade is the highest flame retardant grade.

94 Vertical combustion test method of the 5-V class.

The 94 5-V class vertical combustion test is divided into two types: method A and method B (method A is the test strip and method B is the test piece), which is a more stringent experimental method than the 94V V-2 test.

Taking method A as an example, clamp the upper end of the test strip (127mm) and keep its longitudinal axis vertical, and the blowtorch is installed on the inclined plane of the lamp holder so that it is equal to the vertical line at an angle of 20 degrees. The total height of the flame is adjusted to 127mm, ignited for 5 seconds, and then removed for 5 seconds, repeating the operation as Daqing until the specimen withstands ignition 5 times. After the 5th flame shift, observe and record the following:

1) The duration of the flamed and flameless burn roll grip.

2) The distance at which the specimen was burned or damaged.

3) Whether the sample is molten during the test.

4) Observe the deformation and physical strength of the specimen immediately after combustion and cooling.

1. The flame retardant grade of ABS+PC raw materials is different, some are V0, some are V2, and some are not fireproof.

2. Introduction to PC+ABS:

PC+ABS, polycarbonate and acrylonitrile-butadiene-styrene copolymer and mixture, is a thermoplastic plastic made of polycarbonate (polycarbonate) and polyacrylonitrile (ABS) alloy, combining the excellent characteristics of the two materials, the formability of ABS material and the mechanical properties of PC, impact strength and temperature resistance, ultraviolet (UV) resistance, etc., which can be widely used in automotive interior parts, office equipment, communication equipment, home appliances and lighting equipment.

In GB T11020-2005, FV-0 is V0. The flame retardant level is increased from HB, V-2, V-1 to V-0: HB:

The lowest flame retardant rating in the UL94 standard. Requires a burning rate of less than 40 mm per minute for samples between 3 and 13 mm thick; Samples less than 3 mm thick with a combustion rate of less than 70 mm per minute;

Flame retardant class, that is, the property that a substance has, or a material that has been treated, significantly delays the spread of flames, and is classified as a hierarchy.