Non-halogen flame-proof urethane elastomer flame resisting agent and method of preparing the same

Abstract

The invention relates to a halogen-free flame retardant polyurethane elastomer flame retardant and the preparation method. The flame retardant comprises the following components and contents (weight per cent): melamine-formaldehyde coating ammonium phosphate 30 per cent to 70 per cent, triethylol isocyanurate 10 per cent to 35 per cent, melamine cyanurate 5 per cent to 20 per cent, phosphonate 10 per cent to 20 per cent, organic silane coupling agent 0.1 per cent to 0.5 per cent and antioxidant 0.1 per cent to 0.8 per cent. The preparation method of the flame retardant comprises the process steps such as the mixture of the melamine-formaldehyde coating ammonium phosphate. Compared with the prior art, the invention overcomes the defect of harm of halogen flame retardant polyurethane elastomer on the environment and the human body, endows the materials with certain difficult-flammability, has good compatibility with the polyurethane and has no effect on the mechanical properties of the polyurethane.

Description

Technical field [0001] The invention relates to the technical field of halogen-free flame-retardant polyurethane elastomers (TPU), in particular to a halogen-free flame-retardant polyurethane elastomer flame retardant and a preparation method thereof. Background technique [0002] Polyurethane elasticity is reflected in commonly used flame retardants, which are flame retardants mainly containing halogens such as bromine and chlorine. Although they have good flame retardant effects, polyurethane elastomers containing halogen flame retardants, A large amount of harmful gas will be produced, causing pollution to the environment and harm to the human body. Therefore, the development of new halogen-free environmentally friendly flame retardants for polyurethane elastomers has become the focus of research. [0003] For example, US 4,324,835 proposed the use of ammonium polyphosphate inorganic acid mixed with pentaerythritol as an expansion flame retardant for TPU foam, and JP 01 / 40588 ...

AI Technical Summary

Problems solved by technology

[0004] Although the TPU flame retardant technology has achieved great results, there are generally large amounts of additions and poor compatibility with TPU, which has a very adverse effect on the mechanical properties of TPU.