Intumescent flame retardant (IFR) material containing metal oxygenation substances and preparation method thereof

Abstract

The invention provides a flame retardant polymer, in particular to an intumescent flame retardant (IFR) material containing metal oxygenation substances and a preparation method thereof, which is characterized in that the intumescent flame retardant (IFR) material comprises the following components by weight percent: 60-70% of resin matrix, 1-5% of metal oxide, 15-30% of melamine pyrophosphate and 6-10% of pentaerythritol. The preparation method is as follows: milling the well-proportioned components in kneading; crushing the well-kneaded premix; extruding by an extruder and pelletizing; and performing injection molding by an injection molding machine or hot-press forming. The invention improves the flame retardant efficiency for materials, has good flame retardant effect, meets the requirement on environment protection, and has low production cost, no byproduct generation and simple production process.

Description

technical field [0001] The invention relates to a flame-retardant polymer, especially an expanded flame-retardant polymer containing metal oxygenate and a preparation method thereof. Background technique [0002] At present, polymer materials have been widely used in vehicles, chemical equipment, household appliances, etc. However, most of these polymer products are flammable (LOI is 17-20%), and the fires caused by polymer fires every year It has brought huge losses to people's lives and properties. There are about 5,000 people in Europe every year, and more than 4,000 people in the United States die in fires every year. The total loss reaches 1% of the total output value of the national economy. Fires are also emerging in an endless stream in our country. In 2007 alone, there were 159,000 fires in our country, more than 1,400 people were killed, more than 800 people were injured, and the direct property loss was 990 million yuan. Nowadays, countries all over the world pay...

AI Technical Summary

Problems solved by technology

Halogen flame retardants have developed into mainstream products in the flame retardant market due to their low dosage, high flame retardant efficiency and wide adaptability. However, halogen flame retardants generate a lot of smoke and toxic and corrosive gases during combustion. Gas can cause corrosion of circuit system switches and other metal objects and environmental pollution that cannot be caused by fire alone. The European Union's "Restriction of Hazardous Substances Directive (RoHS) Directive clearly states that, Electrical products put on the EU market after July 1, 2006 must not contain harmful halogenated flame retardants such as polybrominated biphenyls

Therefore, the development of inorganic flame retardants to replace halogen flame retardants has become a trend in the field of flame retardants in the world. Inorganic flame retardants (Al(OH) 3 , Mg(OH) 2 etc.) Although the source is rich, halogen-free and non-toxic, its flame retardant effect is poor, and the addition amount is large, which will deteriorate the performance of the product. Therefore, the development of efficient, low-cost, halogen-free and non-toxic inorganic flame retardant has become the One of the hot spots of flame retardant research