What is the specific gravity of PVC, pvc and LSZH material

PVC and LSZH are two different things.

Summary. Low-smoke halogen-free flame retardant polyolefin cable material is usually composed of polyolefin blend resin plus flame retardant filler aluminum hydroxide, magnesium hydroxide and some appropriate amount of antioxidants added in order to improve heat life. Sometimes, in order to reduce the amount of smoke when burning, some smoke inhibitors are also added, such as vanadium, nickel, molybdenum, iron, silicon, and nitrogen compounds.

Its flame retardant mechanism is as follows: when burning, the flame retardant fillers aluminum hydroxide and magnesium hydroxide will release crystal water and absorb a lot of heat; At the same time, the dehydration reaction will produce a large amount of water vapor, which can dilute the flammable gas, thereby preventing combustion, and will form a layer of non-melting and non-combustible oxide hard shell on the surface of the material, blocking the channel of the polymer and the external heat and oxygen reaction, and finally the material is flame retardant and self-extinguishing.

Hello, dear. PVC is divided into soft and hard, transparent and non-hyal, the proportion of different Tongzhi materials plus plasticizers is different, and the specific gravity is naturally very different, such as the specific gravity of hard transparent PVC, the proportion of hard opaque PVC, and the soft hole wheel guess transparent PVC for the sodium type.

Pro, low-smoke halogen-free flame retardant polyolefin cable material is usually composed of polyolefin blend resin plus flame retardant filler aluminum hydroxide, magnesium hydroxide and some antioxidants added to the hidden stove in order to improve the heat resistance life. Sometimes, in order to reduce the amount of smoke when burning, some smoke inhibitors are also added, such as vanadium, nickel, molybdenum, iron, silicon, and nitrogen compounds. Its flame retardant mechanism is as follows:

When burning, the flame retardant fillers aluminum hydroxide and magnesium hydroxide will release crystal water and absorb a lot of heat; At the same time, the dehydration reaction will produce a large amount of water vapor, which can dilute the flammable gas, thereby preventing combustion, and will form a layer of non-melting and non-flammable oxide hard shell on the surface of the material, which will block the channel of the polymer and the external heat and oxygen reaction, and finally the material will be flame retardant and self-extinguishing.

Traditional PVC wires and wires will produce hydrogen halides, carbon monoxide, and carbon dioxide when burned.

A: Traditional PVC wires and wires will produce smoke containing toxic gases such as hydrogen halide, carbon monoxide, and carbon dioxide when burned, which not only affects the smooth progress of disaster relief work, but also causes life and property"Second disaster"；

B: The strongest opposition to the use of PVC is Switzerland, Germany, Sweden, the United States, Japan and a number of other countries, where legislatures and coordinating bodies have enacted strict laws that limit and eventually eliminate the industrial use of PVC;

C: According to SS-00259, SONY requires the wire provided by the supplier to meet the requirements of comprehensive LSZH (except for high-temperature wires such as FEP), and the characteristics of LSZH wires

1) The tensile strength is greater than that of general PVC wires: the tensile strength of general PVC wires is greater than that of low-smoke halogen-free wires;

2) Good weather resistance (-30 105);

3) Good softness (hardness 80-90);

4) Non-transferable (because no plasticizer is added to the formulation of this product, there will be no displacement);

5) No toxic black smoke (a small amount of white smoke will be produced) when burned;

6) It has a high volume resistivity: PVC wire is generally 1012 1015 cm3, and LSZH halogen-free wire is greater than 1016 cm3;

7) Good high voltage resistance: PVC wires are generally resistant to more than 10kV, while low-smoke halogen-free wires are up to more than 15kV;

8) It has good elasticity and viscosity.