国语自产拍无码精品视频在线_久久久久成人片免费观看r_精品久久99_在线天堂资源www中文_影音先锋成人_99久久精品一区_日日操夜夜爽_久久99精品网久久_精品第一页_精品视频久久_看免费毛片_中文字幕av一区

It is reported that insulation materials, especially exterior wall insulation materials, have a considerable market capacity, which can bring great business opportunities to enterprises engaged in the production of exterior wall insulation materials. As an enterprise producing insulation materials, it is necessary to grasp the direction of the market and research products that are more in line with market demand in order to obtain the power of sustainable development.

Most of the current insulation materials in my country are not hydrophobic and have high water absorption. As a result, the waterproof requirements for the outer sheath are very strict, which increases the cost of the outer sheath. At present, the silicone hydrophobic agent in the modifier is a more common and effective hydrophobic agent for insulation materials. Its hydrophobic mechanism is to use the strong chemical affinity between organic silicon compounds and inorganic silicate materials to effectively change the surface properties of silicate materials to achieve hydrophobic effect. It has the characteristics of good stability, low cost and simple construction process.

Some of the fire resistance, impact resistance and waterproof performance are poor, and the insulation materials that are greatly affected by the weather are gradually eliminated. The current insulation board not only has the most basic insulation effect, but also has the functions of decoration and fire prevention. These three main functional effects are the market demand for thermal insulation materials in recent years, and it also has the following additional effects.

1. The plastering of openings such as doors and windows must be completed, and the thickness of the external thermal insulation system and the finishing layer should be considered.

2. All metal brackets must be rust-proof.

3. All balcony railings must be installed.

4. Wall structures and corners of two or more floors, wall structures and corners.

5. Mouth and bottom.

6. Plastering mortar, alkali-resistant fiberglass mesh.

7. The wall bolt holes on the exterior wall must be sealed with polyurethane foam. After blocking the holes in the wall bolts, the demon should apply polyurethane waterproof coating on the wall to ensure that the wall bolts will not leak.

Looking to the future, new insulation materials dominated by concepts such as energy saving and environmental protection will be popular. Experts believe that the HVAC industry must follow this trend and provide support for the development of the green and environmentally friendly HVAC industry, while gaining greater room for development in the expanding new demands and new fields of air conditioning and refrigeration.