Modified asphalt waterproof coiled material and method for preparing same

A technology of modified asphalt and waterproof membrane, which is applied in the direction of asphalt layered products, chemical instruments and methods, building components, etc. Handling and other issues, to achieve the effect of reducing thermal aging, good heat insulation effect, and easy maintenance in the later stage

Inactive Publication Date: 2017-08-18
杭州东方雨虹建筑材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, for the modified asphalt membrane with concrete and mineral particle layer, the thermal conductivity of modified asphalt waterproof base material is usually 0.17-0.69w / m K, and the thermal conductivity of concrete is 0.93-1.5w / m K, the range of thermal conductivity of mineral pellets is large due to the different materials selected, generally 0.87-2.18w / m K, these materials are much higher than the thermal conductivity of air 0.024w / m K, which leads to the thermal conductivity of the coil The heat insulation effect is still poor, and the modified asphalt base material is easy to age
[0004] In addition, for the modified asphalt waterproofing membrane of the mineral particle layer, the mineral particles on the surface are easy to fall off due to long-term exposed use, resulting in the aging of the modified asphalt base material, and a large number of cracks or cracks will appear in the asphalt base material layer. The waterproof function and service life of the membrane
For the modified asphalt coils that need to be poured after construction, leakage points are caused by irregular construction or structural deformation, which will make later maintenance very inconvenient
[0005] Furthermore, the use of the mineral granular material layer results in an increase in the coil weight of the modified bitumen waterproofing membrane, which is not conducive to handling during construction
In order to improve this problem, the industry has adopted measures to shorten the length of the coil, but this will increase the overlapping area during the construction process and affect the construction efficiency

Method used

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  • Modified asphalt waterproof coiled material and method for preparing same
  • Modified asphalt waterproof coiled material and method for preparing same

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preparation example Construction

[0042] The present invention also provides a method for preparing the modified asphalt waterproof coiled material, the method comprising: applying the corresponding modified asphalt base material and isolation material sequentially on the upper surface and the lower surface of the reinforcement layer respectively, cooling and shaping, collecting rolls to form the modified bitumen waterproofing membrane.

[0043] In the present invention, "corresponding" refers to the modification of the first modified asphalt base material layer 2, the overlying surface isolation layer 1, the second modified asphalt base material layer 4, and the lower overlying surface isolation layer 2 respectively. Asphalt base material, isolation material. In addition, the modified asphalt base material and isolation materials used are as mentioned above, and will not be repeated here.

Embodiment approach

[0044] According to one embodiment, the lower covering insulation layer 5 is a polyethylene film as an example, such as figure 2 As shown, the preparation process of the modified waterproof asphalt membrane may include: unfolding, drying, and pre-impregnating the base (i.e., the reinforcement) in sequence, and then coating the modified base on the upper and lower surfaces of the base. Asphalt base material, finally on the surface of the upper modified asphalt base material (corresponding to the first modified asphalt base material layer 2) covered with aerogel particles, modified asphalt base material below (corresponding to the second modified asphalt base material layer 2) The surface of the material layer 4) is covered with a polyethylene film, then cooled and shaped, and rolled to obtain the modified asphalt waterproof coiled material.

[0045] Specifically, the upper surface isolation layer 1 is formed by spreading silica airgel particles on the first modified asphalt ba...

Embodiment 1

[0048] 1) Preparation of elastomer modified asphalt base material

[0049] Heat 6000kg 90# petroleum asphalt to 180-185°C, add 1400kg SBS803, heat up to 185-195°C, start the colloid mill, homogenize for 1.5h, then add 2600kg talcum powder, keep the temperature at 180-190°C and stir for 50min, It is standby to make elastomer II type modified asphalt base material (i.e. SBSII type modified asphalt base material);

[0050] 2) Preparation of modified asphalt waterproof membrane

[0051] With the glass fiber reinforced polyester tire as the reinforcing body, the above-mentioned SBSII modified asphalt base material is evenly coated on the upper and lower surfaces of the reinforcing body. / cm 3 Silica airgel (85% porosity, 10-20 mesh, thermal conductivity 0.013w / m·K) is evenly spread on the SBSII modified asphalt base material on the upper surface, and the thickness of the spread is 2.0mm, through the extrusion of the extrusion roller, the unbonded particles are removed to form a ...

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Abstract

The invention belongs to the field of building waterproofing, and particularly provides a modified asphalt waterproof coiled material and a method for preparing the same. The modified asphalt waterproof coiled material comprises an upper covering isolation layer, a first modified asphalt base material layer, a reinforcement layer, a second modified asphalt base material layer and a lower covering isolation layer from top to bottom. Isolation materials for the upper covering isolation layer are silicon dioxide aerogel particles. The modified asphalt waterproof coiled material and the method have the advantages that heat-insulation surfaces of the modified asphalt waterproof coiled material comprise the silicon dioxide aerogel particles, accordingly, excellent heat-insulation effects can be realized, and heat aging due to solar radiation can be reduced; the modified asphalt waterproof coiled material is exposed and accordingly can be easily constructed, and maintenance in later periods can be facilitated.

Description

technical field [0001] The invention belongs to the field of building waterproofing, and in particular relates to a modified asphalt waterproofing coiled material and a preparation method thereof. Background technique [0002] At present, modified asphalt waterproofing membranes are widely used on the ground, underground, and vertical walls of buildings because of their excellent performance, simple manufacturing process, mature construction methods, and low cost compared with other waterproof materials. The structure of the modified asphalt waterproofing membrane is generally polyester tire, glass fiber tire, glass fiber reinforced polyester tire, etc. The modified asphalt base is overlaid with isolation material. Due to the different types of isolation materials, the products are divided into mineral particle surface coils that can be used exposed and other isolation material surface coils that cannot be exposed. Among them, the mineral aggregate surface membrane uses mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B11/12B32B11/04B32B11/02B32B33/00B32B9/00B32B9/04
CPCB32B9/00B32B9/04B32B11/02B32B11/04B32B11/046B32B11/12B32B33/00B32B2264/102B32B2307/304B32B2307/552B32B2307/73B32B2419/00
Inventor 杨灿吴士玮刘金景
Owner 杭州东方雨虹建筑材料有限公司
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