Reactive phosphorus-containing flame retardant and preparation method and application thereof

A flame retardant and reactive technology, applied in the field of flame retardants, can solve problems such as cumbersome process flow and complex synthesis methods of flame retardants, and achieve the effects of wide application range, excellent durability, and easy control
CN108948424AActive Publication Date: 2018-12-07SICHUAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SICHUAN UNIV
Publication Date
2018-12-07

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Abstract

The invention provides a reactive phosphorus-containing flame retardant. The flame retardant contains unsaturated double bonds and can react with polymer, and phosphate and phosphamide structural units are further introduced based on the structure with the unsaturated double bonds. After the obtained flame retardant is applied to unsaturated polyester resin, the highest level of vertical burning UL-94 reaches the level of V-1-V-0, the maximum value of the limit oxygen index LOI is 33.0%, and the peak of heat release rate (PHRR) and total heat release (THR) in cone calorimetry tests are lower than the PHRR and THR of pure unsaturated polyester; after the obtained flame retardant is applied to unsaturated polyester glass fiber composite materials, the highest level of vertical burning UL-94reaches the level of V-1-V-0, and the maximum value of the limit oxygen index LOI is 40%. The reactive phosphorus-containing flame retardant has good flame retardancy and little influences on the mechanical properties of the materials. The invention also provides a preparation method of the flame retardant. The preparation method of the flame retardant is simple, and has mild conditions and easy control.
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Description

technical field

[0001] The invention belongs to the field of flame retardants, in particular to a reactive phosphorus-containing flame retardant and its preparation

[0002] preparation methods and applications. Background technique

[0003] Polymer materials are widely used in aerospace, household appliances, electronic information, and construction fields due to their many advantages such as abundant sources, easy processing, superior performance, and low price. However, most polymer materials are flammable materials, which are easy to cause fire and cause heavy losses to human life and property. Therefore, how to reduce the combustion performance of polymer materials has become a technical and social issue that people pay more and more attention to. At present, adding flame retardants to modify them is one of the important ways to endow these polymer materials with excellent flame retardancy, which also provides a broad market for the research and development of flame r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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