Company News_第14页_Novista Chemicals - The pioneer of Flame retardant

18 2022-6
Fire hazard losses Fire hazard is a general term that is a combination of different factors, including ignitability, amount of heat release, ease of extinction, weight-loss, flame spread, smoke index, and toxicity. Modern life is surrounded by a wide variety of readily combustible materials, such as, cellulosic materials and man-made polymers. Synthetic polymers alone may not be a fire hazard, b…
11 2022-6
Future Market Trends of halogen free flame retardants The market size of HFFRs was USD 3.36 Billion in 2015 and is projected to reach USD 5.38 Billion by 2021, registering a Compound Annual Growth Rate of 8.4% between 2016 and 2021. The most preferred HFFR is ATH followed by organo-phosphorus chemicals, and others. The factors driving the ATH market are its low cost, easy availability, and high use in all the sectors [26]. Future F…
11 2022-6
Bio macromolecular flame retardants Very recently, bio macromolecules such as proteins (whey proteins, caseins, hydrophobias) and deoxyribonucleic acid (DNA) have shown unexpected flame retardancy on cellulosic or synthetic substrates [21]. These proteins are waste or by-products from the cheese and milk industry, DNA is costly, but DNA was extracted and purified from salmon milt. The mechanism is still under inve…
11 2022-6
Silicon flame retardants Silicone is eco-friendly, widely available in nature and is easy to prepare flame retardant from it. The silica ash layer can also prevent oxygen from reaching the matrix. A novel, simple and low cost flame retardant containing phosphorus, nitrogen and silicon was synthesized [17]. LOI was improved from 18.0 to 27.1, wrinkle recovery angle increased from 800 to 980. A novel phos…
28 2022-5
Nanocomposites as a flame retardant Nanocomposites is a multiphase solid material where one of the phases has one, two or three dimensions of less than 100 nanometres, or structures having nanoscale repeat distances between the different phases that make up the material. Polymer layered-silicate nanocomposites (PLSNs) with silicate enhance mechanical properties, increase heat-distortion temperatures, improve therm…
28 2022-5
Nano materials as a flame retardant Inexpensive nanoclays form 'nano-network' which spread out and dispersed through the host material forming a sort of gauze. The breakdown of material and the release of gas phase combustible molecules are slowed down or even prevented. Nano materials can be used as:a) Nano polymer compositesb) Nanoparticles in traditional back-coatingsc) Deposition of nano coatings on the fabric…
28 2022-5
Intumescent FRs Intumescence is the result of a combination of charring and foaming at the surface of the burning polymer, which protects the underlying material from the action of the heat or flame. Intumescent FRs (IFRs) is often used for applications requiring high levels of flame retardancy. They are highly efficient and low toxic. They provide very robust fire safety and flame resistance p…
21 2022-5
Nitrogen FRs This class consists of pure melamine, melamine derivatives, i.e. salts with organic or inorganic acids such as boric acid, cyanuric acid, phosphoric acid or pyro/poly-phosphoric acid, and melamine homologues. Combinations of nitrogen-based flame retardants such as melamine polyphosphate and metal phosphinates also demonstrated flame retardancy of composites that has repercussion…
21 2022-5
Phosphorous based FRs (PFRs) Phosphorus flame retardants (PFRs) (organic and inorganic) are more environmentally friendly, good thermally stable and have superior performance, resulting from the synergistic effect of P-N. They do not tend to form toxic gases since phosphorus is mostly locked into the char. Phosphorous FRs may be reactive (chemically bound) and additive (physical mixing) [2]. Lanxess [3] has…
21 2022-5
Halogen-based flame retardants (Br-FRs) The Stockholm Convention (2001) listed 23 organo-halogen chemicals (including all BFRs) to be banned globally. The challenges of finding substitutes for banned halogen-containing flame- retardants include:A. Lower flame retardancy: Only 10 wt% of BFRs is equivalent to about 30-50% by wt of inorganic FRsB. High cost: Inorganic FRs is low-cost but require high loading. New HFFRs, …