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Polyurethane fireproof blocking material, preparation and use thereof

A technology of fireproof blockage and application method, which is applied in fire rescue and other directions, can solve the problems of increased maintenance costs, high overall cost, and difficulty in sealing tightly, etc., and achieves the effects of good construction characteristics, long service life, and good environmental protection characteristics

Inactive Publication Date: 2008-11-05
张国林 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction process is complex, time-consuming and labor-intensive, and the overall cost is high, especially for parts with dense cables or complex structures, it is not easy to seal tightly, and the service life of such materials is generally only 3-4 years, which increases maintenance costs

Method used

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  • Polyurethane fireproof blocking material, preparation and use thereof
  • Polyurethane fireproof blocking material, preparation and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] This embodiment provides a polyurethane fireproof blocking material, including:

[0029] The polyurethane fireproof blockage is a soft elastic or rigid polyurethane fireproof blockage made by mixing and stirring polyisocyanate containing flame retardants and polyether polyols in proportion, and undergoing chemical reaction, foaming, expansion and curing. Combustion agent is composed of various inorganic substances containing nitrogen, phosphorus, carbon and calcium.

[0030] The closed cell content in the foam structure of the rigid polyurethane foam provided in this embodiment is greater than 90%, and the water absorption rate is low, generally below 2%. It has good waterproof and anti-corrosion properties.

Embodiment 2

[0032] Such as figure 1 As shown, the preparation method of polyurethane fireproof blocking material provided in this embodiment, its steps mainly include:

[0033] Add 5-12% by weight of inorganic flame retardant to polyisocyanate and stir evenly;

[0034] Add 18-42% by weight of inorganic flame retardant to polyether polyol and stir evenly;

[0035] Mix and stir polyisocyanate containing flame retardant and polyether polyol at a weight ratio of 0.85:1, undergo chemical reaction, expand and solidify after foaming, and make flexible elastic or rigid polyurethane fireproof blocking material.

[0036] The density of the flexible and elastic polyurethane fireproof blockage is 200kg / m 3 ~250kg / m 3 , the density of rigid polyurethane fireproof blockage is 80kg / m 3 ~100kg / m 3 .

Embodiment 3

[0038] This embodiment provides an application method of polyurethane fireproof blockage,

[0039] It is to set up simple templates in the parts that need to be protected.

[0040] Mix and stir the polyisocyanate containing flame retardant and polyether polyol in a weight ratio of 0.85:1 using special machinery or manual operation;

[0041] When the mixed liquid has not yet foamed and expanded, pour or spray the liquid material between the parts that need to be protected. The liquid material flows freely and foams and expands to tightly fill the space of the part that needs to be protected. After curing, it will be demoulded. The parts that need to be protected form a strong and seamless flame-retardant protective layer.

[0042] Among them, if the opening of the base body that needs to be filled with polyurethane fireproof blockage needs to be blocked, the formwork is enclosed at the part of the base opening that needs to be protected, and a pouring port is set on the formwo...

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Abstract

The invention discloses the preparation and application method of polyurethane fireproof blockage. The polyurethane fireproof blockage is made by the chemical reaction of multi-isocyanate and polyether polyol containing flame retardant. The preparation method includes: adding the flame retardant into the multi-isocyanate and the polyether polyol respectively, then blending and agitating, finally generating the flexible or rigid polyurethane fireproof blockage by foaming, expanding and curing after the chemical reaction. The application method includes: blending and agitating the multi-isocyanate with the polyether polyol containing the flame retardant, priming and spraying the liquid state material onto positions and equipment requiring protection before the foaming of the liquid state material, then flame retardation takes effect at the positions requiring protection after foaming, expanding and curing.

Description

technical field [0001] The invention relates to a preparation and application method of a polyurethane fireproof blocking material, which is suitable for fireproofing and blocking requirements for fireproofing in the fields of construction, petroleum, chemical industry, electric power, grain depots and transportation industries. Background technique [0002] In the fields of construction, petroleum, chemical industry, electric power, grain depot and transportation, there are increasingly higher requirements for the performance and application technology of fire-retardant materials, while traditional fire-proof sealing materials are in terms of performance, price, service life, The construction technology and environmental protection are far from meeting the requirements of many aspects. [0003] In terms of fire protection and sealing, in order to meet the needs of modern communication, power wiring, ventilation, etc., there are a large number of openings in buildings such a...

Claims

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Application Information

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IPC IPC(8): C08L75/08C08K3/00C09K21/14A62C3/00
Inventor 张国林宋迎跃
Owner 张国林
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