The Flame Retardant for Polypropylene using Magnesium Hydroxide with Intumescent Components

• Published in: Molecular crystals and liquid crystals science and technology. Section A, Molecular crystals and liquid crystals Vol. 354; no. 1; pp. 195 - 206
• Main Authors: Kozlowski, Ryszard, Wladyka-Przybylak, Maria, Garbarczyk, Jozef
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Philadelphia, PA Taylor & Francis Group 01.12.2000; Gordon and Breach
• Subjects: Applied sciences; Compounding ingredients; cone calorimeter; Exact sciences and technology; fire retardant; Fireproof agents; intumescent components; magnesium hydroxide; Polymer industry, paints, wood; polypropylene; Technology of polymers; Performance evaluation; Propylene polymer; Flame retardant; Experimental study; Property formulation relationship; Thermal properties; Magnesium Hydroxides; Triazine derivatives; Flammability; Calorimetry; Measurement method; Mechanism of action; Protective coatings
• ISSN: 1058-725X
• DOI: 10.1080/10587250008023614

In this work we present results of our study on flammability of polypropylene samples containing various fire retardants. Moreover, the influence of the flame retardants added to PP on the structure of polypropylene matrix was investigated. The effect of magnesium hydroxide on thermal properties of isotactic polypropylene was measured on a cone calorimeter. The measurements were performed in air at heat flux of 50kW/m 2 . Melamine polyphosphate, when added to MagShield-PP system, shows the highest fire-retarding effect compared to other intumescent compounds studied, such as pentaerythritol, urea polyphosphate and zinc borate. The weakest effect was recorded for zinc borate-containing composite. Results of the structural study allow to conclude that fire retardants based on magnesium compounds in practice do not change the crystalline structure of isotactic polypropylene. The intumescent fire retardants act as nucleants of hexagonal form of isotactic polypropylene.