A kind of polyurethane foam concrete and preparation method thereof

A technology of polyurethane foam and polyurethane, which is applied in ceramic products, other household appliances, applications, etc., can solve the problems of low strength, large capacity, and high thermal conductivity of foam insulation materials, and achieve improved insulation performance and durability, and high closed cell rate , good waterproof performance

Active Publication Date: 2018-01-26
HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The invention provides a polyurethane foam concrete and a preparation method thereof, which solves the technical problems of high thermal conductivity and large capacity of traditional foam concrete, and solves the technical problem of low strength of traditional polyurethane cement foam insulation materials

Method used

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  • A kind of polyurethane foam concrete and preparation method thereof

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Comparison scheme
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Embodiment 1

[0043] Embodiment 1 of the present invention provides the preparation method of polyurethane foam concrete comprising the following steps:

[0044] Step 1, preparing polyurethane aggregate; adding water, polyurethane black material and polyurethane white material in sequence to the cement, stirring evenly while adding, and standing to obtain polyurethane aggregate; the specific preparation method is as follows,

[0045] Step a, according to the ratio of water-cement ratio is 0.35, adding water to the cement, stirring evenly while adding;

[0046] Step b, add polyurethane black material accounting for 10% of the cement mass to the solution prepared in step a, stir quickly and evenly, and stir for 20s to 30s;

[0047] Step c, add polyurethane white material accounting for 10% of the cement mass to the solution prepared in step b, stir quickly and evenly, and stir for 20s to 30s;

[0048] Step d, standing still for 5 minutes, until the foam no longer changes, that is, the polyur...

Embodiment 2

[0067] Embodiment 2 of the present invention provides the preparation method of polyurethane foam concrete comprising the following steps:

[0068] Step 1, preparing polyurethane aggregate; adding water, polyurethane black material and polyurethane white material in sequence to the cement, and stirring evenly while adding, and standing to obtain polyurethane aggregate; the specific preparation method is as follows,

[0069] In step a, according to the ratio of water-cement ratio of 0.4, water is added to the cement, stirring while adding, and stirring evenly;

[0070] Step b, add polyurethane black material accounting for 15% of the cement mass to the solution prepared in step a, stir quickly and evenly, and stir for 20s to 30s;

[0071] Step c, add polyurethane white material accounting for 15% of the cement mass to the solution prepared in step b, stir quickly and evenly, and stir for 20s to 30s;

[0072] Step d, standing still for 5 minutes, until the foam no longer change...

Embodiment 3

[0091] Embodiment 3 of the present invention provides the preparation method of polyurethane foam concrete comprising the following steps:

[0092] Step 1, preparing polyurethane aggregate; adding water, polyurethane black material and polyurethane white material in sequence to the cement, and stirring evenly while adding, and standing still to obtain polyurethane aggregate;

[0093] The specific preparation method is as follows,

[0094] Step a, according to the ratio of water-cement ratio of 0.5, add water to the cement, and stir evenly while adding;

[0095] Step b, add polyurethane black material accounting for 20% of the cement mass to the solution prepared in step a, stir quickly and evenly, and stir for 20s to 30s;

[0096] Step c, add polyurethane white material accounting for 20% of the cement mass to the solution prepared in step b, stir quickly and evenly, and stir for 20s to 30s;

[0097] Step d, standing still for 5 minutes, until the foam no longer changes, tha...

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Abstract

A method for preparing polyurethane foam concrete comprises a step 1 of preparing polyurethane aggregate; sequentially adding water, polyurethane black materials and polyurethane white materials into cement, performing stirring evenly while performing the adding, and standing to obtain the polyurethane aggregate; a step 2 of preparing cement slurry; adding the cement and the water into a container in proportion, and performing stirring evenly; a step 3 of preparing the polyurethane foam concrete; adding the polyurethane aggregate obtained in the step 1 into the cement slurry obtained in the step 2, and then sequentially adding a foam stabilizer and a foaming agent to make the polyurethane foam concrete. According to the method, the technical problems that conventional foam concrete is high in thermal conductivity and contractibility, cracks easily and is large in volume weight are solved, and the technical problems that a conventional polyurethane foam heat insulation material is low in intensity and not resistant to fire are also solved.

Description

technical field [0001] The invention relates to a foam concrete and a preparation method thereof, in particular to a polyurethane foam concrete and a preparation method thereof. Background technique [0002] Due to its good properties, foam concrete is widely used in cast-in-place roofs with foam concrete insulation layers, foam concrete surface blocks, foam concrete lightweight wall panels, and foam concrete compensation foundations. For ordinary concrete, foamed concrete has the advantages of low density, light weight, heat preservation, sound insulation and earthquake resistance. However, compared with organic thermal insulation materials, foamed concrete has the disadvantages of higher thermal conductivity and higher density. In order to improve the thermal insulation performance of foam concrete and reduce the bulk density of foam concrete, it is necessary to change the existing foam concrete from the material composition. At this stage, some scholars are studying poly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B38/02
CPCC04B28/00C04B38/02C04B2103/0068C04B2111/27C04B2111/343C04B2201/20C04B2201/32C04B2201/50C04B24/282C04B24/02C04B22/002C04B24/085
Inventor 麻建锁周苗苗蔡焕琴白润山
Owner HEBEI INSTITUTE OF ARCHITECTURE AND CIVIL ENGINEERING
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