阅读说明：本技术 一种发泡混凝土制品表面防护处理方法 (Surface protection treatment method for foamed concrete product ) 是由 王武祥 刘洪彬 张磊蕾 陈德鹏 王爱军 郭富 廖礼平 于 2020-05-25 设计创作，主要内容包括：一种发泡混凝土制品表面防护处理方法。提供了一种能够提高发泡混凝土制品表面硬度,克服发泡混凝土制品表面脆、易掉粉的缺点,降低发泡混凝土制品吸水率,提高其耐久性且工艺简单、易操作的发泡混凝土制品表面防护处理方法。本发明通过喷涂或浸润工艺在发泡混凝土制品的表面涂覆一层表面防护剂,提高发泡混凝土制品表面硬度,克服发泡混凝土制品表面脆、易掉粉的缺点,整体上降低发泡混凝土制品吸水率,提高其耐久性且工艺简单、易操作。确保发泡混凝土制品表面干净,便于表面防护剂涂覆在发泡混凝土制品表面。(A surface protection treatment method of a foaming concrete product. The surface protection treatment method for the foamed concrete product can improve the surface hardness of the foamed concrete product, overcome the defects of brittleness and easy powder falling of the surface of the foamed concrete product, reduce the water absorption rate of the foamed concrete product, improve the durability of the foamed concrete product, and has simple process and easy operation. According to the invention, the surface of the foamed concrete product is coated with a layer of surface protective agent by a spraying or wetting process, so that the surface hardness of the foamed concrete product is improved, the defects of brittleness and easy powder falling of the surface of the foamed concrete product are overcome, the water absorption rate of the foamed concrete product is integrally reduced, the durability of the foamed concrete product is improved, and the process is simple and easy to operate. The surface of the foamed concrete product is ensured to be clean, and the surface protective agent is convenient to coat on the surface of the foamed concrete product.)

1. A surface protection treatment method for a foamed concrete product is characterized by coating a surface protection agent on the surface of the foamed concrete product and comprising the following steps:

1) dust removal: polishing the surface of the foamed concrete product and ensuring the surface of the foamed concrete product to be clean;

2) coating: spraying or infiltrating a surface protective agent on the surface of the foamed concrete product to ensure that the surface protective agent covers the surface of the foamed concrete product;

3) and (3) drying: placing the coated foamed concrete product in a drying device for drying, wherein the drying temperature is 60-70 ℃ until the surface of the foamed concrete product is dried or adopting natural drying, and placing the coated foamed concrete product outdoors for airing and draining water until the surface of the foamed concrete product is dried;

4) packaging: and cooling the dried foamed concrete product, and packaging the cooled foamed concrete product.

2. The surface protection treatment method of the foamed concrete product according to claim 1, wherein the foamed concrete product comprises a foamed cement insulation board and a foamed concrete block,

the surface of four sides and one top surface of the foamed concrete block are coated with the surface protective agent.

3. The surface protection treatment method for the foamed concrete product according to claim 2, wherein the surface protection agent is coated on the outer surface and four sides of the foamed cement insulation board, and a white space is formed on the inner surface.

4. The surface protection treatment method for the foamed concrete product as claimed in claim 1, wherein the surface protection agent is applied by spraying in an amount of 0.4-0.6 kg/m²。

5. The surface protection treatment method for the foamed concrete product according to claim 1, wherein the surface protective agent is coated in an infiltration manner, and the infiltration time is 1-2 s.

6. The surface protection treatment method for the foamed concrete product as claimed in claim 1, further comprising a dripping step, wherein the foamed concrete product with the surface protective agent coated on the surface is stood on a support, the excessive surface protective agent is dripped off, and after 20-30min, the upper end and the lower end of the foamed concrete product are replaced to facilitate the surface protective agent to be coated uniformly.

Technical Field

The invention belongs to the technical field of building wall heat insulation materials, and particularly relates to a surface protection treatment method for a foamed concrete product.

Background

Compared with the traditional external wall external thermal insulation materials (EPS, XPS, PU and the like), the foamed cement thermal insulation board has the characteristics of energy conservation and fire prevention, is very suitable for external wall external thermal insulation and used as a fire-proof isolation strip, and realizes batch production and large-scale application nationwide. However, the foamed cement insulation board has low surface hardness, and the surface is easy to fall off and is brittle after being cut, and the foamed concrete block generally has the defects of high water absorption rate, easy cracking and the like due to the porous structure of the foamed concrete block. These problems limit to some extent the widespread use of foamed concrete articles.

Disclosure of Invention

Aiming at the problems, the invention provides the surface protection treatment method for the foamed concrete product, which can improve the surface hardness of the foamed concrete product, overcome the defects of brittle surface and easy powder falling of the foamed concrete product, reduce the water absorption rate of the foamed concrete product, improve the durability of the foamed concrete product, and has simple process and easy operation.

In order to solve the technical problems, the technical scheme of the invention is as follows: the method comprises the following steps:

1) dust removal: polishing the surface of the foamed concrete product and ensuring the surface of the foamed concrete product to be clean;

2) coating: spraying or infiltrating a surface protective agent on the surface of the foamed concrete product to ensure that the surface protective agent covers the surface of the foamed concrete product;

3) and (3) drying: placing the coated foamed concrete product in a drying device for drying, wherein the drying temperature is 60-70 ℃ until the surface of the foamed concrete product is dried or adopting natural drying, and placing the coated foamed concrete product outdoors for airing and draining water until the surface of the foamed concrete product is dried;

4) packaging: and cooling the dried foamed concrete product, and packaging the cooled foamed concrete product.

The foamed concrete product comprises a foamed cement heat-insulation board and a foamed concrete block,

the surface of four sides and one top surface of the foamed concrete block are coated with the surface protective agent.

The surface protective agent is coated on the outer surface and four side surfaces of the foamed cement heat-insulation board in a comprehensive mode, and a white area is arranged on the inner surface of the foamed cement heat-insulation board.

Coating the surface protective agent in a spraying manner, wherein the spraying amount is 0.4-0.6 kg/m²。

And coating the surface protective agent in an infiltration mode, wherein the infiltration time is 1-2 s.

And a dripping step, namely standing the foamed concrete product coated with the surface protective agent on a support, dripping redundant surface protective agent, and after 20-30min, replacing the upper end and the lower end of the foamed concrete product to be beneficial to the uniform coating of the surface protective agent.

The invention has the advantages that: the surface of the foamed concrete product is coated with a layer of surface protective agent by a spraying or wetting process, so that the surface hardness of the foamed concrete product is improved, the defects that the surface of the foamed concrete product is crisp and easy to fall off are overcome, the water absorption rate of the foamed concrete product is integrally reduced, the durability of the foamed concrete product is improved, and the process is simple and easy to operate. In addition, the foaming concrete product coated with the surface protective agent drops and removes the redundant surface protective agent through vertical transposition, so that the problem of uneven surface protective agent at the two ends of the foaming concrete product is solved; and in the dust removal step, the surface of the foamed concrete product is polished for dust removal, so that the surface of the foamed concrete product is ensured to be clean, and the surface protective agent is conveniently coated on the surface of the foamed concrete product.

Detailed Description

The invention comprises the following steps:

1) dust removal: polishing the surface of the foamed concrete product and ensuring the surface of the foamed concrete product to be clean;

2) coating: spraying or infiltrating a surface protective agent on the surface of the foamed concrete product to ensure that the surface protective agent covers the surface of the foamed concrete product;

3) and (3) drying: placing the coated foamed concrete product in a drying device for drying, wherein the drying temperature is 60-70 ℃ until the surface of the foamed concrete product is dried or adopting natural drying, and placing the coated foamed concrete product outdoors for airing and draining water until the surface of the foamed concrete product is dried;

4) packaging: and cooling the dried foamed concrete product, and packaging the cooled foamed concrete product.

The foamed concrete product comprises a foamed cement heat-insulation plate and a foamed concrete block,

when the foamed concrete block is processed, the surfaces of four sides and one top surface of the foamed concrete block are coated with surface protective agents. The bottom surface of the building block is not coated with a surface protective agent, and the purpose is to facilitate the bonding strength between the masonry material (cement, yellow sand and the like) and the building block.

When the foamed cement insulation board is treated, six surfaces of the board can be coated comprehensively. The outer surface and four sides of the plate are coated with the surface protective agent completely, the inner surface is provided with a left white area, the left white area is an area which is formed by arranging a plurality of blocks of the foaming cement heat-insulation plate and is not coated with the surface protective agent, and a plurality of schemes for realizing the method are provided, such as surface adhesion paper, a removable adhesive tape and the like.

Coating the surface protective agent in a spraying manner, wherein the spraying amount is 0.4-0.6 kg/m²。

And coating the surface protective agent in an infiltration mode, wherein the infiltration time is 1-2 s.

And a dripping step, namely standing the foamed concrete product coated with the surface protective agent on a support, dripping redundant surface protective agent, and after 20-30min, replacing the upper end and the lower end of the foamed concrete product to be beneficial to the uniform coating of the surface protective agent.