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A polyurethane composite board

A composite board and polyurethane technology, which is applied in the direction of building components, lamination, insulation, etc., can solve the problem of reducing the mechanical strength of polyurethane rigid foam plastics, compressive strength, long-term creep performance and dimensional stability, increasing cell size, and reducing polyurethane Rigid foam plastics use performance and other issues, to improve the gel time, reduce thermal conductivity, improve the effect of service life

Active Publication Date: 2018-03-27
FOSHAN LOKANG PLASTIC PROD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these additive flame retardants have a certain plasticizing effect. When applied, the cell structure of polyurethane rigid foam will be irregular, and the cell size will be increased, which will reduce the mechanical properties of polyurethane rigid foam. Strength, compressive strength, long-term creep properties and dimensional stability, thereby reducing the service performance of polyurethane rigid foam

Method used

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  • A polyurethane composite board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] like figure 1 As shown, a polyurethane composite board includes a panel layer 1, a carbon foam layer 3, a polyurethane material layer 4, an aluminum foil plate 5, the lower surface of the panel layer 1 is connected to the carbon foam layer 3, and a buffer portion 2 is also arranged therebetween, and the carbon foam layer The lower surface of the foam layer 3 is connected to the polyurethane material layer 4 , the lower surface of the polyurethane material layer 4 is connected to the aluminum foil plate 5 , and the buffer portion 2 is evenly distributed between the panel layer 1 and the carbon foam layer 3 .

[0026] exist figure 1 Among them, the panel layer 1 has a built-in rib structure, the thickness of the panel layer 1 is 15mm, and the thickness of the carbon foam layer 3 is 15mm. It is made of resin-based carbon foam, and granular silicon carbide reinforcements are added to the carbon foam. The polyurethane material layer 4 The thickness is 40mm, the thickness of...

Embodiment 2

[0036] like figure 1 As shown, a polyurethane composite board includes a panel layer 1, a carbon foam layer 3, a polyurethane material layer 4, an aluminum foil plate 5, the lower surface of the panel layer 1 is connected to the carbon foam layer 3, and a buffer portion 2 is also arranged therebetween, and the carbon foam layer The lower surface of the foam layer 3 is connected to the polyurethane material layer 4 , the lower surface of the polyurethane material layer 4 is connected to the aluminum foil plate 5 , and the buffer portion 2 is evenly distributed between the panel layer 1 and the carbon foam layer 3 .

[0037] exist figure 1 Among them, panel layer 1 has a built-in stiffener structure. The thickness of panel layer 1 is 25mm, and the thickness of carbon foam layer 3 is 10mm. It is made of resin-based carbon foam, and granular silicon carbide reinforcements are added to the carbon foam. Polyurethane material layer 4 The thickness is 30mm, the thickness of the alumi...

Embodiment 3

[0047] like figure 1 As shown, a polyurethane composite board includes a panel layer 1, a carbon foam layer 3, a polyurethane material layer 4, an aluminum foil plate 5, the lower surface of the panel layer 1 is connected to the carbon foam layer 3, and a buffer portion 2 is also arranged therebetween, and the carbon foam layer The lower surface of the foam layer 3 is connected to the polyurethane material layer 4 , the lower surface of the polyurethane material layer 4 is connected to the aluminum foil plate 5 , and the buffer portion 2 is evenly distributed between the panel layer 1 and the carbon foam layer 3 .

[0048] exist figure 1 Among them, panel layer 1 has a built-in stiffener structure. The thickness of panel layer 1 is 20mm, and the thickness of carbon foam layer 3 is 20mm. It is made of resin-based carbon foam, and granular silicon carbide reinforcements are added to the carbon foam. Polyurethane material layer 4 The thickness is 50mm, the thickness of the alumi...

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Abstract

The invention discloses a polyurethane composite board, which comprises a panel layer, a carbon foam layer, a polyurethane material layer, and an aluminum foil board. The polyurethane material layer is connected, the aluminum foil plate is connected to the lower surface of the polyurethane material layer, and the buffer part is evenly distributed between the panel layer and the carbon foam layer. The polyurethane material layer is made with a special formula. The rigid polyurethane composite board has a density of more than 37kg / m3, a compressive strength of not less than 147KPa, a thermal conductivity of not more than 0.018W / (m·K), and a dimensional stability of less than 1.8%. , the water absorption rate is less than 3.7%, and the oxygen index is greater than 26, which can fully meet the industry standard and is better than the general products on the market. The overall performance of the obtained rigid polyurethane composite board is better than that of most existing polyurethane composite boards. The technology is based on the existing technology, no special manufacturing is required, the source of raw materials is wide, the adaptability is strong, the manufacturing cost is low, and it is easy to be widely used.

Description

technical field [0001] The invention relates to a thermal insulation composite board, in particular to a polyurethane composite board. Background technique [0002] Rigid polyurethane composite panels are widely used as insulating materials in cold storage and construction industries. Usually, the rigid polyurethane foam inside is a closed-cell rigid foam, and the cells contain low-conductivity gases such as hydrocarbons. , the liquid foaming composition can be used in cast-in-place applications, spray applications, and to form rigid foam boards or panels. However, polyurethane rigid foam plastics without flame retardant treatment are flammable, and their combustion oxygen index is less than 19, and polyurethane rigid foam plastics will emit harmful gases such as HCN and CO during combustion. Flame retardancy has received extensive attention. At present, the method of improving the flame retardancy of polyurethane rigid foam plastics is mainly to use additive flame retarda...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E04B1/80E04B1/94B32B9/04B32B15/095B32B15/20B32B37/12B32B37/06C08G18/66C08G18/48C08G18/42C08G18/36C08J9/14
Inventor 余德辉刘庆
Owner FOSHAN LOKANG PLASTIC PROD CO LTD
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