Studies of electrical properties of some fire-retarding poly(vinyl chloride) compositions

Abstract

Several fire-resistant formulations were prepared from a sample of poly(vinyl chloride) (PVC), small variable proportions of chloroorganic adducts [1,2,3,4,7,7-hexachloro-5-carboxy,bicyclo(2,2,1)heptene-2] or [1,2,3,4,7,7-hexachloro-5-carboxy,5-methylbicyclo(2,2,1)heptene-2] as fire-retarding modifiers, plasticizers (dibutylphthalate and a chlorinated paraffin), and a heat stabilizer (dibutyltindilaurate). The fire-resistance and electrical properties of the obtained formulations were studied to obtain a fire-retarding plasticized PVC of good electrical insulation character.

Fire performance of wood (Pinus radiata) treated with fire retardants and a wood preservative

“…These polymeric fire retardants included tribromoneopentyl alcohol [26,27], phosphoric acid 3-(diphenoxy-phosphoryloxy)-phenyl ester diphenyl ester [28][29][30], chlorinated paraffin with 65% chlorine content [31][32][33][34] and tetrabromobisphenol A bis (2,3-dibromopropyl ether) [35,36], which is also known to possess biocide functionality [37].…”

Study on 1‐4 cycloaddition reaction. I. Synthesis and optimization of new adduct using Diels–Alder reaction

“…A 0.25‐mm layer of silica gel (30 g with 60 mL H 2 O) was spread over a 20 × 20 cm glass plate, and 100 mL of hexane‐acetone (1:1) solvent was used in a Shardon TM chromatography tank. The dimensionless R f value is calculated using experimental data from the following ratio7: …”

“…The synthesis of bicyclic compounds containing substituents such as halogen atoms, ether, ester groups, and aromatic rings could be considered as a basic rule for the production and improvement of many synthetic materials 7, 8. HCP and its derivatives are very interesting materials to use for these purposes.…”

“…Comparative studies were carried out in order to compare the reaction reactivities of halogenated dienophiles that undergo a reaction with HCP 7. It is concluded that halogenated dienophiles undergoing a reaction with HCP under the described conditions must have at least one hydrogen atom on each of the double bonded carbons 8…”

Modification of Acrylonitrile-Butadiene Rubber/Natural Rubber (NBR/NR) Blends with Tetrachloro Phthalic Anhydride

“…[2][3][4][5][6] These additives reduce the macroscopic inhomogeneities and improve the morphological stability, by decreasing the interfacial tension and, subsequently, by reducing the dispersed phase size. [10][11][12][13] For wire and cable applications, rubber composites must present protections against mechanical stress combined with adequate performance as an insulator to prevent electric losses. However, the applications in this field require special precautions against fire generation.…”