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High-compression-resistance and high-flame-retardant spraying rigid polyurethane foam cold storage floor and construction process thereof

A technology of spraying polyurethane and polyurethane, which is applied to floors, insulation layers, buildings, etc., can solve the problems of wasting energy, recycling metal materials, etc., and achieve the effects of saving foam costs, resources, and environmental protection

Pending Publication Date: 2022-03-29
万华节能科技(烟台)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Because pultruded polyurethane profiles are made of about 80% glass fiber compounded with about 20% polyurethane thermosetting resin, they cannot be recycled like thermoplastics or metal materials. At present, they can only be treated as solid waste, wasting a lot of energy and other social resources.

Method used

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  • High-compression-resistance and high-flame-retardant spraying rigid polyurethane foam cold storage floor and construction process thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0047] The high-compression and high-flame-retardant spray polyurethane rigid foam cold storage floor of this embodiment adopts a special construction process, and its specific construction steps are as follows:

[0048] 1) Prepare the keel

[0049] Cut polyurethane pultrusion doors and windows, pultrusion square beams and other hollow polyurethane pultrusion profiles with square or rectangular cross-sections into short profiles with a length of 200mm, arrange them vertically, and then use polyurethane structural adhesives to form 8m long profiles. A keel, and the hollow interior of the profile is filled with B1 grade flame-retardant polyurethane rigid foam.

[0050] 2) Lay the keel

[0051] Lay keels in parallel on the cold storage floor where the insulation layer begins, with a keel spacing of 400mm.

[0052] 3) Spray flame retardant polyurethane rigid foam

[0053] Wanefoam6013, a combination material of Wanhua Energy Conservation Technology Group Co., Ltd., is used as c...

Embodiment 2

[0059] The high-compression and high-flame-retardant spray polyurethane rigid foam cold storage floor of this embodiment adopts a special construction process, and its specific construction steps are as follows:

[0060] 1) Prepare the keel

[0061] Cut polyurethane pultrusion doors and windows, pultrusion square beams and other hollow polyurethane pultrusion profiles with square or rectangular cross-sections into short profiles with a length of 200mm, arrange them vertically, and then use polyurethane structural adhesives to form 12m long profiles. A keel, and the hollow interior of the profile is filled with polyurethane insulation foam.

[0062] 2) Lay the keel

[0063] Lay keels in parallel on the cold storage floor where the insulation layer begins, with a keel spacing of 400mm.

[0064] 3) Spray flame retardant polyurethane rigid foam

[0065] Use Wanhua Energy Conservation Technology Group Co., Ltd.’s combined material wanefoam6012 as component A, its flame retardant...

Embodiment 3

[0071] This embodiment adopts the cold storage floor construction process of directly spraying B1 grade polyurethane insulation material, and its specific construction steps are as follows:

[0072] 1) Construction of insulation layer

[0073] Use Wanhua Energy Conservation Technology Group Co., Ltd.’s combined material wanefoam6013 as component A, its flame retardant grade is B1, and its density is about 45kg / m 3 ; Wanhua Chemical Group Co., Ltd. polymethylene polyphenyl polyisocyanate wanenate PM200 as B component. Mix component A and component B evenly according to the weight ratio of 1:1.1, mix and spray on the cold storage floor through a high-pressure spraying machine, adopt a layer-by-layer spraying process, and the thickness of each layer is 20-30mm, and the spraying thickness of the insulation layer is 200mm.

[0074] 2) Pouring concrete

[0075] Pour 100mm of fine stone concrete on the sprayed flame retardant polyurethane foam.

[0076] After measurement, the loa...

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Abstract

The invention relates to a high-compression-resistance and high-flame-retardant spraying rigid polyurethane foam cold storage floor and a construction process thereof. The cold storage floor comprises a keel frame composed of a plurality of keels, the keels are formed by bonding a plurality of polyurethane pultruded profile leftover materials which are vertically arranged, the height of the polyurethane pultruded profile leftover materials is matched with the designed thickness of a cold storage floor heat preservation layer, and flame-retardant polyurethane rigid foam is sprayed between the adjacent keels. The spraying thickness of the flame-retardant polyurethane rigid foam is equal to the height of the keel frame, and after the upper portion of the keel frame is flattened, a prefabricated reinforced concrete plate is laid or reinforced concrete is directly poured. According to the invention, the technical requirements of low density, B1-level flame retardance, seamless linkage and compressive strength of greater than or equal to 500KPa of a cold storage floor on a thermal insulation material are met.

Description

technical field [0001] The invention relates to a polyurethane hard foam cold storage floor with high compression resistance and high flame retardancy spraying, which belongs to the technical field of cold storage internal heat preservation. Background technique [0002] In the process of traditional cold storage design and construction, the load-bearing design of the ground generally requires ≥350KPa, and some even reach ≥500KPa. In order to meet the load-carrying of forklifts and other transport vehicles, polystyrene extrusion is often used for the ground that can not only keep warm but also bear load. The board (XPS) is paved layer by layer. The thermal insulation performance of XPS boards is worse than that of polyurethane foam, and the gaps formed by layers of paving have hidden dangers of cold bridges, which require a certain gap correction coefficient to assist. At the same time, the existence of gaps is conducive to the penetration of small molecule water vapor, resu...

Claims

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Application Information

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IPC IPC(8): E04F15/12E04F15/18E04F15/02
CPCE04F15/12E04F15/18E04F15/182E04F15/02044E04F15/0215E04F2015/0205
Inventor 王磊李坤温晴锟张峰韩延康潘振勇余郁王耀西杜明瑞
Owner 万华节能科技(烟台)有限公司