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Class B1 flame-retardant single-component polyurethane foam material

A polyurethane foam, one-component technology, applied in the field of building materials, can solve the problems that the single-component polyurethane foam cannot be guaranteed for long-term use, cannot reach the B1 flame retardant grade, and has poor flame retardant effect, so as to ensure long-term use and enhance resistance. combustion effect, the effect of improving the oxygen index

Inactive Publication Date: 2019-11-08
李学友
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Aiming at the deficiencies of the prior art, the present invention provides a B1-grade flame-retardant single-component polyurethane foam material, which solves the problem that the existing single-component polyurethane foam material has a poor flame-retardant effect and cannot reach the B1 flame-retardant grade, and The shelf life is short, and the problem of long-term use of one-component polyurethane foam cannot be guaranteed

Method used

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  • Class B1 flame-retardant single-component polyurethane foam material
  • Class B1 flame-retardant single-component polyurethane foam material
  • Class B1 flame-retardant single-component polyurethane foam material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] S1. Selection and weighing of raw materials: first use weighing equipment to measure 100 parts of diphenylmethane diisocyanate, 95 parts of mixed flame-retardant polyether polyol, 7 parts of flame-retardant paraffin, and 7 parts of corresponding parts by weight. 134a hydrofluoroalkane propellant, 3 parts catalyst and 3 parts B1 flame retardant foaming agent. After the measurement is completed, diphenylmethane diisocyanate, hybrid flame retardant polyether polyol, flame retardant paraffin, 134a hydrofluoro Alkane propellant, catalyst and B1 flame retardant blowing agent are placed in storage tanks for storage and use;

[0038] S2. Preparation of polyether mixture: Pour the mixed flame-retardant polyether polyol, flame-retardant paraffin, 134a hydrofluoroalkane propellant and catalyst measured in step S1 into the mixing stirrer in turn at a speed of 550r / min , Stir for 35 minutes at a temperature of 30°C to prepare a polyether mixture;

[0039] S3. Preparation of polyurethane...

Embodiment 2

[0043] S1. Selection and weighing of raw materials: first use weighing equipment to measure 15 parts of diphenylmethane diisocyanate, 110 parts of mixed flame-retardant polyether polyol, 5 parts of flame-retardant paraffin, and 5 parts of corresponding parts by weight. 134a hydrofluoroalkane propellant, 1 part catalyst and 1 part B1 flame retardant foaming agent. After the measurement is completed, diphenylmethane diisocyanate, mixed flame retardant polyether polyol, flame retardant paraffin, 134a hydrofluoro Alkane propellant, catalyst and B1 flame retardant blowing agent are placed in storage tanks for storage and use;

[0044] S2. Preparation of polyether mixture: Pour the mixed flame-retardant polyether polyol, flame-retardant paraffin, 134a hydrofluoroalkane propellant and catalyst measured in step S1 into the mixing stirrer in turn at a speed of 500r / min , Stir for 30 minutes at a temperature of 26°C to prepare a polyether mixture;

[0045] S3. Preparation of polyurethane fo...

Embodiment 3

[0049] S1. Selection and weighing of raw materials: First, use weighing equipment to measure 150 parts of diphenylmethane diisocyanate, 80 parts of mixed flame-retardant polyether polyol, 10 parts of flame-retardant paraffin, and 10 parts by weight respectively. 134a hydrofluoroalkane propellant, 5 parts catalyst and 5 parts B1 flame retardant foaming agent. After the measurement is completed, diphenylmethane diisocyanate, hybrid flame retardant polyether polyol, flame retardant paraffin, 134a hydrofluoro Alkane propellant, catalyst and B1 flame retardant blowing agent are placed in storage tanks for storage and use;

[0050] S2. Preparation of polyether mixture: Pour the mixed flame-retardant polyether polyol, flame-retardant paraffin, 134a hydrofluoroalkane propellant and catalyst measured in step S1 into the mixing stirrer in turn at a speed of 600r / min , Stir for 40 minutes at a temperature of 35°C to prepare a polyether mixture;

[0051] S3. Preparation of polyurethane foam m...

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Abstract

The invention discloses a class B1 flame-retardant single-component polyurethane foam material. The raw material of the material comprises, in parts by weight, 15-150 parts of diphenylmethane diisocyanate, 80-110 parts of mixed flame-retardant polyether polyol, 5-10 parts of flame-retardant paraffin, 5-10 parts of a 134a hydrofluoroalkane propellant, 1-5 parts of a catalyst, and 1-5 parts of a class B1 flame-retardant foaming agent, wherein a model number of the mixed flame-retardant polyether polyol is GN-ZR-260. The invention relates to the technical field of building materials. According tothe class B1 flame-retardant single-component polyurethane foam material, by using the mixed flame-retardant polyether polyol and the flame-retardant paraffin wax, an oxygen index of the single-component polyurethane foam material can be improved, a shelf life of the single-component polyurethane foam material can be prolonged, and thus the flame-retardant effect of the single-component polyurethane foam material is greatly enhanced, dimensional stability of foams is ensured, a flame height during a foam burning test is reduced, and an amount of generated smoke and an amount of generated heatare reduced, so that the long-term use of the single-component polyurethane foam material is ensured.

Description

Technical field [0001] The invention relates to the technical field of building materials, in particular to a Class B1 flame-retardant single-component polyurethane foam material. Background technique [0002] Polyurethane PU foam sealant is a one-component product that is filled with polyurethane prepolymer, catalyst, and gas propellant in the same pressure-resistant iron sheet aerosol can. During construction, it is sprayed through a matching glue gun or plastic pipe. Spray the aerosol colloid to the part to be constructed, and complete the short-term curing molding, foaming, bonding and sealing process through the moisture curing reaction. The cured foam elastomer has bonding, waterproof, heat-resistant expansion and contraction, and heat insulation. , Sound insulation and flame-retardant and other excellent properties, widely used in the filling and sealing of the side seams of building doors and windows, component expansion joints and holes, the construction industry general...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L91/06C08G18/76C08G18/48C08J9/04C08G101/00
CPCC08G18/4804C08G18/7671C08J9/0061C08J9/04C08J2375/08C08J2491/06
Inventor 李学友
Owner 李学友
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