Non-molten-drop flame-retardant polyurethane adhesive and non-molten-drop flame-retardant reflective hot paste

A technology of polyurethane adhesive and polyurethane adhesive layer, which is applied in the direction of polyurea/polyurethane adhesive, adhesive, film/sheet adhesive, etc., and can solve the secondary combustion hazard, secondary combustion, and smoldering of adhesive layer materials And other issues

Active Publication Date: 2021-07-06
夜视丽新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

More importantly, in some fields with high fire safety requirements, ordinary reflective heat stickers cannot meet the needs of use, and reflective products with better flame retardant properties need to be used
[0003] At present, the flame retardant performance of flame retardant reflective products is usually achieved by adding flame retardants to the material to prevent the danger caused by its combustion. etc. itself has good flame retardancy, but the material of the adhesive layer (polyurethane glue) in these flame-retardant reflective products will have a droplet phenomenon at high temperature, and there will be a problem of dripping, which will lead to the adhesive layer after the droplet Hazard of secondary combustion caused by material, etc. dripping onto other substances
For example, in conventional reflective heat stickers, the material of the adhesive layer that glues each layer together is usually made of polyurethane pressure-sensitive adhesive for the compounding of each layer, and for polyurethane pressure-sensitive adhesives, it is also con

Method used

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  • Non-molten-drop flame-retardant polyurethane adhesive and non-molten-drop flame-retardant reflective hot paste
  • Non-molten-drop flame-retardant polyurethane adhesive and non-molten-drop flame-retardant reflective hot paste
  • Non-molten-drop flame-retardant polyurethane adhesive and non-molten-drop flame-retardant reflective hot paste

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] This non-droplet flame retardant polyurethane adhesive consists of the following components by mass percentage:

[0040] Spirocyclic phosphate: 5.0%; Aluminum hydroxide: 2.0%; Fumed silica: 6.0%, the particle diameter of fumed silica is 200nm; MPP (melamine phosphate): 3.0%; ADP (diethyl hypophosphorous acid Aluminum): 10%; the rest is polyurethane, which is equivalent to adding the composite flame retardant in the above mass percentage to the non-droplet flame retardant polyurethane glue. Wherein the spirocyclic phosphate adopts the spirocyclic-cage structure phosphate of following structural formula:

[0041]

[0042] Further, wherein, the polyurethane in the non-droplet flame-retardant polyurethane glue of this embodiment is mainly made of the following raw materials in parts by weight:

[0043] Hydroxyethyl methacrylate: 15; Hydroxypropyl acrylate: 10; Methyl methacrylate: 16; Butyl acrylate: 9.0; Acrylic acid: 5.0; 1,4-butanediol: 8.0; 1,6-hexanediol Alcohol: ...

Embodiment 2

[0046] This non-droplet flame retardant polyurethane adhesive consists of the following components by mass percentage:

[0047] Spirocyclic phosphate: 8.0%; Aluminum hydroxide: 4.0%; Fumed silica: 9.0%, the particle diameter of fumed silica is 300nm; MPP (melamine phosphate): 2.5%; ADP (diethyl hypophosphorous acid Aluminum): 8.0%; the rest is polyurethane, which is equivalent to adding the composite flame retardant in the above mass percentage to the non-droplet flame retardant polyurethane glue. Wherein the spirocyclic phosphate adopts the spirocyclic-cage structure phosphate of following structural formula:

[0048]

[0049] Furthermore, the non-droplet flame-retardant polyurethane glue of this embodiment is mainly made of the following raw materials in proportion by weight:

[0050] Hydroxyethyl methacrylate: 10; Hydroxypropyl acrylate: 8.0; Methyl methacrylate: 10; Butyl acrylate: 8.0; Acrylic acid: 7.0; 1,4-butanediol: 5.0; 1,6-hexanediol Alcohol: 13; Trimethylolpro...

Embodiment 3

[0053] This non-droplet flame retardant polyurethane adhesive consists of the following components by mass percentage:

[0054]Spirocyclic phosphate: 10%; Aluminum hydroxide: 5.0%; Fumed silica: 8.0%, the particle size of fumed silica is 260nm; MPP (melamine phosphate): 2.5%; Calcium diethyl hypophosphite: 7.0%; the rest is polyurethane, which is equivalent to adding the composite flame retardant in the above mass percentage to the non-droplet flame retardant polyurethane glue. Wherein the spirocyclic phosphate adopts the double spirocyclic phosphate of the following structural formula:

[0055]

[0056] Further, wherein, the polyurethane glue of the present embodiment is mainly made from the following raw materials in parts by weight:

[0057] Hydroxyethyl methacrylate: 12; Hydroxypropyl acrylate: 5.0; Methyl methacrylate: 11; Butyl acrylate: 7.0; Acrylic acid: 7.0; 1,4-butanediol: 6.0; 1,6-hexanediol Alcohol: 9.0; Trimethylolpropane: 5.0; Aminoethylaminopropyl Dimethico...

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Abstract

The invention relates to a non-molten-drop flame-retardant polyurethane adhesive and a non-molten-drop flame-retardant reflective hot paste, and provides the non-molten-drop flame-retardant polyurethane adhesive and the non-molten-drop flame-retardant reflective hot paste in order to solve the problem that the existing non-molten-drop flame-retardant polyurethane adhesive and the non-molten-drop flame-retardant reflective hot paste are easy to melt. The flame-retardant polyurethane adhesive comprises a composite flame retardant including, by mass, 5.0-10% of spirocyclic phosphate ester; 2.0-5.0% of aluminum hydroxide; 6.0-9.0% of fumed silica; 2.0-3.0% of melamine phosphate; and 5.0-10% of diethyl hypophosphite. The hot paste comprises a flame-retardant hot melt adhesive layer, the non-molten-drop flame-retardant polyurethane adhesive layer and a glass bead layer are sequentially arranged on the flame-retardant hot melt adhesive layer, and a metal coating layer is arranged between the non-molten-drop flame-retardant polyurethane adhesive layer and the glass bead layer. The polyurethane adhesive and the hot paste have the effective characteristics of no molten drops and good flame retardance through the synergistic effects of all the components of the flame retardant system, and have the effects of short afterflame time and avoidance of smoldering.

Description

technical field [0001] The invention relates to a droplet-free flame-retardant polyurethane glue and a droplet-free flame-retardant reflective heat sticker, which belong to the technical field of reflective materials. Background technique [0002] As we all know, the existing reflective thermal paste is a heat-transfer reflective material that uses PU or PES as a hot-melt adhesive layer and uses metal-coated glass beads to reflect light. When in use, the reflective properties of reflective materials such as reflective heat stickers can reflect the incident light back, making it widely used in transportation, fire protection, railways and other fields, and also commonly used in road maintenance and safety clothing for firefighters. The material's reflective properties are used to highlight the wearer's presence for added safety. More importantly, in some fields with high fire safety requirements, ordinary reflective thermal stickers cannot meet the needs of use, and reflecti...

Claims

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Application Information

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IPC IPC(8): C09J175/04C09J11/04C09J11/06C09J7/30
CPCC09J175/04C09J11/04C09J11/06C09J7/30C08K2003/2227C08K2201/011C08K13/04C08K5/527C08K3/22C08K7/26C08K5/5205C08K5/5313Y02E60/10
Inventor 王爱民郭仁刚凌大新李远斌孙家俊
Owner 夜视丽新材料股份有限公司
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