A kind of inorganic flame retardant and preparation method and application

Abstract

The invention discloses high-efficient inorganic flame retardant and a preparation method and application thereof, relates to the high-efficient inorganic flame retardant and the preparation method and application thereof, and aims at solving the problem that the mechanical performance of a material is deteriorated by poor flame retardant efficiency and higher loading of existing metal hydroxide flame retardant. The flame retardant is prepared from, by weight, 100 parts of inorganic flame retardant and 0.01-20 parts of polycarbosilane. The method comprises the steps that step one, polycarbosilane solution is prepared and mixing is conducted; step two, the polycarbosilane and the inorganic flame retardant are put into a high-speed mixer and mixed; step three, the polycarbosilane and the inorganic flame retardant are put into a ball grinding mill and milled. The inorganic flame retardant is used for preparing a halogen-free flame-retardant polyolefin material. The oxygen index (OI) of the prepared halogen-free flame-retardant polyolefin material is 25-40, the tensile strength is 10 MPa-20 MPa, and the elongation is 180%-450%. By means of the method, the high-efficient inorganic flameretardant can be obtained.

Description

technical field [0001] The invention relates to an inorganic flame retardant, a preparation method and application. Background technique [0002] In the field of polymer flame retardant, except for halogenated flame retardants and some phosphorus-nitrogen composite flame Flame retardant systems, etc., mainly condensed phase flame retardant. Due to the continuous deepening of the concept of environmental protection, the application of halogenated flame retardants that can produce toxic fumes during combustion is gradually banned, and for metal hydroxide flame retardants, the flame retardant efficiency of metal hydroxide flame retardants is low. Low, often requires a higher filling amount (50wt% ~ 60wt%) to meet the flame retardant grade requirements during use (OI> 30), however, a higher filling amount will deteriorate the mechanical properties of the material, making the actual material Applications are largely limited. [0003] At present, there are generally two comm...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the flame retardant efficiency of existing metal hydroxide flame retardants is poor, and a higher filling amount will deteriorate the mechanical properties of the material, and provide a high-efficiency inorganic flame retardant and its preparation method and application

Images