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Self-adhered asphalt and preparation method thereof and self-adhered asphalt waterproof roll

A technology of asphalt waterproof membrane and self-adhesive asphalt, which is applied to building insulation materials, building components, buildings, etc., can solve the problems of decreased cohesion, detachment from the base layer, and difficulty in curing building leakage, so as to improve the resistance to damage sexual effect

Active Publication Date: 2017-09-01
青岛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

However, although the self-adhesive asphalt membrane forms a full bond with the base layer, as time goes by, the adhesion with the base layer will decrease, and then there will be a phenomenon of detachment from the base layer; if there are local leakage points and water channeling occurs , then the leakage control of the building will be difficult to cure

Method used

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  • Self-adhered asphalt and preparation method thereof and self-adhered asphalt waterproof roll
  • Self-adhered asphalt and preparation method thereof and self-adhered asphalt waterproof roll
  • Self-adhered asphalt and preparation method thereof and self-adhered asphalt waterproof roll

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Embodiment approach

[0030] According to a preferred embodiment, the preparation method specifically includes the following steps:

[0031] 1) Add the high-grade liquid asphalt, liquid viscosity-increasing agent and viscosity-reducing agent into the reaction kettle, and raise the temperature to 100-150°C (preferably 135-145°C);

[0032] 2) Add SIS and SBS, heat up to 170-185°C (more preferably 175-180°C), and homogenize at a high speed within this temperature range for 0.8-1.2h;

[0033] 3) adding light calcium carbonate and stirring for 0.5-1 hour, and then adding antioxidant and stirring for 0.2-0.6 hours, so as to prepare the self-adhesive asphalt.

[0034] According to the third aspect of the present invention, the present invention provides a self-adhesive asphalt waterproofing membrane, the self-adhesive asphalt waterproofing membrane comprising the self-adhesive asphalt described in the present invention.

[0035] According to a preferred embodiment, the self-adhesive asphalt waterproofing...

Embodiment 1

[0044] 1) Raw material formula (by weight) of self-adhesive asphalt:

[0045]

[0046] 2) The preparation method is:

[0047]Add the above-mentioned high-grade liquid asphalt, liquid tackifier and viscosity reducer into the reaction kettle, raise the temperature to 140°C, add SIS and powdered SBS, raise the temperature to 175-180°C, and homogenize at a high speed within this temperature range for 1.0h ; Then add light calcium carbonate and stir for 0.6h, and finally add antioxidant and stir for 0.3h to obtain self-adhesive asphalt.

[0048] The typical performance indicators of the product are softening point of 88°C, low temperature flexibility of -30°C, peel strength of 2.51N / mm, self-healing time of 2 seconds at standard ambient temperature, and 5 seconds of self-healing time at 5°C; ℃ and 10 ℃ are bonded to the cement board, and the fatigue resistance is 100 times of vibration without water seepage.

Embodiment 2

[0050] 1) Raw material formula (by weight) of self-adhesive asphalt:

[0051]

[0052] 2) The preparation method is:

[0053] Add the above-mentioned high-grade liquid asphalt, liquid tackifier and viscosity reducer into the reaction kettle, raise the temperature to 140°C, add SIS and powdered SBS, raise the temperature to 175-180°C, and homogenize at a high speed within this temperature range for 0.8h ; Then add light calcium carbonate and stir for 0.6h, and finally add antioxidant and stir for 0.4h to obtain self-adhesive asphalt.

[0054] The typical performance indicators of the product are softening point of 8°C, low temperature flexibility of -32°C, peel strength of 2.57N / mm, self-healing time of 2 seconds at standard ambient temperature, and 3 seconds of self-healing time at 5°C; ℃ and 10 ℃ are bonded to the cement board, and the fatigue resistance is 100 times of vibration without water seepage.

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Abstract

The invention belongs to the field of building waterproof materials, and particularly relates to self-adhered asphalt and a preparation method of the self-adhered asphalt and a self-adhered asphalt waterproof roll; the self-adhered asphalt is prepared from the following raw materials in parts by weight: 45 to 65 parts of high-grade liquid asphalt, 15 to 25 parts of SIS, 12 to 20 parts of SBS, 3 to 10 parts of a liquid tackifier, 0.2 to 0.5 part of an antioxidant, 0.2 to 1.2 parts of a viscosity reducer, and 0 to 12 parts of light calcium carbonate; the softening point of the high-grade liquid asphalt is 15 to 20 DEG C, and the needle penetration (0.1mm) of the high-grade liquid asphalt at the temperature of 0 DEG C is 220 to 280. The self-adhered asphalt disclosed by the invention can meet self-repairing of the roll which is destroyed in the high and low temperature environments to improve anti-destructiveness of the roll, and improve bond performances of the self-adhered roll and a base layer to ensure that a waterproof layer is not separated from the base layer when being subjected to vibration damage for more than 100 times at the temperature of 10 DEG C below zero or higher.

Description

technical field [0001] The invention belongs to the field of building waterproof materials, and in particular relates to a self-adhesive asphalt, a preparation method of the self-adhesive asphalt, and a self-adhesive asphalt waterproof coiled material. Background technique [0002] At present, according to the construction method, asphalt coils can be divided into three categories: hot-melt, self-adhesive and mechanical fixation. Hot-melt asphalt coils have mature construction methods and strong and reliable bonding. However, on the one hand, due to the influence of heating construction methods, some projects cannot be used. On the other hand, once they are detached from the base layer, they cannot be bonded again. Mechanically fixed asphalt membranes cannot form a full bond with the base layer, and once leakage occurs, it will be difficult to repair. Self-adhesive asphalt waterproofing membrane adopts cold bonding construction method, which is safe and reliable, and is wid...

Claims

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Application Information

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IPC IPC(8): C08L95/00C08L53/02C08L45/00C08L23/08C08L23/20C08L35/06C08L45/02C08K3/26C08K5/134
CPCC08K2003/265C08L95/00C08L2201/08C08L2205/025C08L2205/035C08L53/02C08L45/00C08L23/0853C08K3/26C08K5/1345C08L23/22C08L35/06C08L45/02
Inventor 刘金景贾建军
Owner 青岛东方雨虹建筑材料有限公司
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