News_第55页_Novista Chemicals - The pioneer of Flame retardant

23 2021-10
PVC flame retardant I believe that we are not unfamiliar with PVC, it is widely used in construction, transportation and household supplies, PVC itself flame retardant, made of products to add a variety of additives so that it does not have flame retardancy.We can add flame retardant in it, is PVC products have flame retardant properties, the following small series with you to discuss this problem.…
16 2021-10
Flame Retardation mechanisms The basic mechanisms of flame retardancy vary depending on the specific flame retardant and the substrate. Additive and reactive flame-retardant chemicals can both function in the vapor (gaseous) or condensed (solid) phase. Endothermic degradationSome compounds break down endothermically when subjected to high temperatures. Magnesium and aluminium hydroxides are an example, toge…
16 2021-10
Flame retardant Classes Both Reactive and Additive Flame retardants types, can be further separated into several different classes: Minerals such as aluminium hydroxide (ATH), magnesium hydroxide (MDH), huntite and hydromagnesite,[2][3][4][5][6] various hydrates, red phosphorus, and boron compounds, mostly borates.Organohalogen compounds. This class includes organochlorines such as chlorendic acid deri…
16 2021-10
Definition of flame retardant The term flame retardants subsumes a diverse group of chemicals which are added to manufactured materials, such as plastics and textiles, and surface finishes and coatings. Flame retardants are activated by the presence of an ignition source and are intended to prevent or slow the further development of ignition by a variety of different physical and chemical methods. They may b…
18 2021-9
Several advantages of flame retardant masterbatch Because of the flame retardant efficiency, environmental protection, efficiency, convenience and so on, the flame retardant masterbatch has become an effective substitute for the traditional flame retardant and has been widely used in the various aspects of plastic granulation, extrusion, injection molding and other aspects.The effective flame retardant masterbatch is also known…
18 2021-9
Why does the P-N-based intumescent halogen-free flame retardant lose its flame retardant ef… In order to reduce the cost, many people added some fillers such as calcium carbonate, barium sulfate, talc, magnesium hydroxide, etc. to the P-N-based expanded halogen-free flame retardant, and found that the flame retardant effect was lost. It is because the addition of the above filler changes the esterification reaction process, and the acid source partially reacts with the…
18 2021-9
Intumescent flame retardant basics The flame retardant system of the P-N-based intumescent flame retardant generally comprises three parts, namely a carbon source (often a polyhydroxy compound such as pentaerythritol), an acid source (such as ammonium polyphosphate, ie APP) and a blowing agent (such as melamine). Its flame retardant mechanism (the process of carbon layer formation): (1) The acid source …
17 2021-9
Calcium-based stabilisers Calcium-based stabilisers (including Ca-Zn ones) are now largely used in wires and cables, in window and technical profiles (also foamed ones), and in any type of pipes (such as soil and sewer pipes, foam core pipes, pressure pipes, corrugated pipes, land drainage pipes and cable ducting) as well as the corresponding fittings.Calcium-based stabilisers have also been introduced i…