Metal-polyurethane-metal sandwich plate material and its manufacturing method

A technology of metal interlayer and manufacturing method, which is applied in the field of metal-polyurethane-metal interlayer board and its manufacturing, can solve the problems of increasing the difficulty of on-site construction, uneven polyol components, difficult to achieve temperature conditions, etc., and achieve uniform formula system, Wide processing applicability and small molding shrinkage

Active Publication Date: 2008-01-09
东莞华工佛塑新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technology still has the following deficiencies: (1) in order to achieve the flame retardant requirements of composite components, it is necessary to add 5 to 50% by weight of flame retardants
These added materials exist in the liquid polyol in solid form and are easy to settle, resulting in uneven polyol components and affecting the performance of the core material
It may even lead to blockage of pipelines and prevent normal construction; (2) In order to ensure that the polyurethane core material and the metal panel are firmly bonded, the metal plate needs to be sandblasted before use. This technology is limited by the size of the composite components and the construction form. Under the conditions of large component size and on-site construction, this process cannot be implemented normally; (3) In order to ensure the performance of the core material polyurethane, it needs to be reacted at 50-150°C
This reaction condition increases the difficulty of on-site construction. In actual operation, especially in the manufacture of large structural parts, this temperature condition is difficult to achieve. Even if it can be achieved, it will consume a lot of energy and require additional auxiliary equipment; (4) This technology adopts the same pouring speed in the pouring process. Since the pouring rate is usually about 200Kg / min, the pouring speed is relatively fast, which may easily cause air bubbles to be generated due to poor exhaust at the exhaust port. At the same time, due to the fast pouring speed, the pouring speed The impact between the material and the metal panel is also prone to air bubbles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A metal-polyurethane-metal sandwich plate and its manufacturing method include the following steps: the panel is made of A3 steel with a thickness of 8mm, the surface is polished and cleaned, and fixed in parallel, the distance between the two plates is 115mm, and the surroundings are sealed to form 1.2m 3 pouring cavity.

[0025] In the polyurethane complex system, the polymer polyol A selects 100 parts by weight of tetrahydrofuran-propylene oxide copolyether with an average functionality of 2 and an average molecular weight of 1350, and chlorinated flame-retardant polyether 58.3 with a functionality of 3 and an average molecular weight of 500. Parts by weight, 8.3 parts by weight of 1,4-butanediol, vacuum dehydrated until the moisture content is lower than 0.05% for later use; 100 parts by weight of liquefied diphenylmethane diisocyanate and 5.3 parts by weight of TDI trimer are used for isocyanate B, and mixed uniformly , sealed for later use.

[0026] Then use a hi...

Embodiment 2

[0028] A metal-polyurethane-metal sandwich plate and its manufacturing method include the following steps: the panel is made of D3 steel with a thickness of 25mm, the surface is polished and cleaned, and fixed in parallel, the distance between the two plates is 75mm, and the surroundings are sealed to form a 1m 3 pouring cavity.

[0029] In the polyurethane complex system, polymer polyol A selects 50 parts by weight of tetrahydrofuran-propylene oxide copolyether with an average functionality of 3 and an average molecular weight of 500, and a tetrahydrofuran-propylene oxide copolyether with a functionality of 2 and an average molecular weight of 1000 50 parts by weight, 28.6 parts by weight of brominated flame-retardant polyether with a functionality of 2 and an average molecular weight of 850, 14.3 parts by weight of methyl propylene glycol, vacuum dehydrated until the moisture content is lower than 0.05% for later use; 100 parts by weight of isofor Alone diisocyanate, the pol...

Embodiment 3

[0032] A metal-polyurethane-metal sandwich plate and its manufacturing method include the following steps: the panel is made of E4 steel with a thickness of 45mm, the surface is polished and cleaned, and fixed in parallel, the distance between the two plates is 30mm, and the surroundings are sealed to form 0.8m 3 pouring cavity.

[0033] In the polyurethane complex system, polymer polyol A selects 100 parts by weight of tetrahydrofuran-propylene oxide copolyether with an average functionality of 2.4 and an average molecular weight of 700, and a phosphorus-substituted flame-retardant polyether 15 with a functionality of 1.7 and an average molecular weight of 1300. Parts by weight, 10 parts by weight of ethylene glycol, vacuum dehydration until the moisture content is lower than 0.05% for later use; isocyanate B is selected from 100 parts by weight of liquefied diphenylmethane diisocyanate and 11.1 parts by weight of triphenylmethane triisocyanate, mixed uniformly, Sealed for la...

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PUM

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Abstract

The present invention is one kind of metal-polyurethane-metal sandwich plate and its making process. The sandwich plate has one core layer of dense polyurethane elastomer, which is produced with polyol and isocyanate in the weight ratio of 100 to 50-90, and through mixing at 20-40 deg.c, pouring, and curing at room temperature. Two metal surface layers are then adhered firmly to the core layer to form the metal-polyurethane-metal sandwich plate. The technological process with room temperature curing may be completed in site, so that the present invention has wide application range in serving as structural material for ship, bridge, high rise building, etc.

Description

technical field [0001] The present invention relates to a composite structural material, and more particularly to a metal-polyurethane-metal sandwich plate that can be used as a structural material and a manufacturing method thereof. technical background [0002] The polyurethane-metal sandwich panel is a composite structure of metal, polyurethane elastomer and metal formed by injecting polyurethane elastomer between two metal plates, and firmly bonding the polyurethane elastomer core material and the inner surface of the metal. Compared with the steel plate, the sandwich plate has the advantages of simple structure, light weight, convenient processing, impact resistance, fatigue resistance, shock absorption, noise reduction, heat insulation, etc., and can be used as a structural component that can withstand large external forces, replacing steel components. It has a wide range of application prospects in the fields of ships, bridges, bridges, high-rise buildings, undergroun...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B15/095B32B37/15B32B38/16B29C39/12B29C39/24C08G18/48C08G18/72B29K75/00
Inventor 张海石朝锋
Owner 东莞华工佛塑新材料有限公司
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