News_第59页_Novista Chemicals - The pioneer of Flame retardant

19 2021-8
Lead stabilizer in PVC production Polyvinyl chloride (PVC), is the most produced plastic polymer in the world after polyethylene and polypropylene. The polymer was discovered in 1872 by Eugen Baumann when he observed that some vinyl chloride in a flask had started to polymerize in a white solid during exposure to the sun. However, the use of PVC in commercial products became more widespread only after the B.F. G…
18 2021-8
Classification of lubricants In the plastic molding process, lubricants reduce the friction between the plastic and processing machine, and between the plastic particles, and they are therefore effective for improving the fluidity and mold-release properties of the plastic, and for enhancing the processing efficiency and appearance of the resulting molded article. Some act as external lubricants, and some a…
18 2021-8
Characteristics of additives used in the processing of PVC. PVC processing requires the use of many additives, thanks to which it is possible to obtain products for different purposes and with different levels of flexibility.PVC is very easily modified and therefore its properties can be freely customized to very different requirements depending on the intended use.Modification is accomplished through the appropriate selection of PVC ble…
18 2021-8
The Formulating PVC Products Before PVC can be made into products, it has to be combined with a range of special additives. The essential additives for all PVC materials are stabilisers and lubricants; in the case of flexible PVC, plasticisers are also incorporated.Other additives which may be used include fillers, processing aids, impact modifiers and pigments. Additives will influence or determine the mec…
16 2021-8
History of Lead stabilizer Lead has the longest history as a stabilizer for PVC.Lead compounds are a cost-effective form of stabilizer used for PVC. Their stabilizing effects are excellent and used for PVC products with long service life and required to endure longer fabrication (heating) hours. Use has been decreasing as a result of the Vinyl 2010 substitution commitment; they now represent only about of…
21 2021-6
Classes of Flame Retardants Flame retardants are generally classified according to their chemical makeup. The most common classes of flame retardants are: Brominated, Phosphorus, Nitrogen, Chlorinated and Inorganic.BrominatedBrominated compounds are used for a number of purposes, but the major use is as flame retardants. Bromine interacts with the fire cycle in the gas phase to stop the chemical chain reac…
21 2021-6
What types of products use flame retardants? While an ever-evolving list of new products—from hair dryers and small appliances to laptops and flat-screen televisions—is incorporated into our homes, offices and commercial environments, we seldom think about how the products are made. Flame retardants provide consumers with a critical layer of fire protection and are vital to reducing the risks associated with fire.Today, …
5 2021-6
A brief history of flame retardant Flame retardants are substances or compounds that are added to other materials, such as plastics, coatings and textiles to prevent or delat the the spread of fire. The first applications of flame retardants predate the Gregorian calendar. Egyptians soaked wood in alum (potassium aluminium sulphate) around 450 B.C. and timbers were painted with vinegar arounsd 360 B.C. to increas…