A kind of asphalt glue and its preparation method and application

Abstract

The invention discloses an asphalt glue and its preparation method and application. The raw materials for the preparation of the asphalt glue include the following components in parts by weight: 45-65 parts by weight of petroleum asphalt; 5-20 parts by weight of epoxy plasticizer; benzene 2-15 parts by weight of ethylene-butadiene-styrene block copolymer; 2-10 parts by weight of hot-melt adhesive grade elastomer; 2-10 parts by weight of tackifying resin; 1-30 parts by weight of inorganic filler. The asphalt glue of the proposal of the present invention can be widely used in the preparation of self-adhesive adhesive materials for waterproof coiled materials, and is especially suitable for HDPE self-adhesive film waterproof coiled materials. Compared with the prior art, the asphalt glue has good anti-aging performance and strong viscosity, and the asphalt glue is used in the preparation of waterproof coiled material, so that the waterproof coiled material with long service life and good waterproof performance can be obtained.

Description

technical field [0001] The invention relates to the technical field of building materials, in particular to an asphalt glue and its preparation method and application. Background technique [0002] Asphalt is a product in the process of crude oil processing. It is a black or dark brown viscous liquid or solid at room temperature, including natural asphalt, petroleum asphalt, shale asphalt and coal tar asphalt. Asphalt has good cohesiveness, water resistance and anti-corrosion properties, and has been widely used in the fields of roads, waterproofing and anti-corrosion. However, asphalt still has deficiencies in high temperature resistance, flow resistance, low temperature flexibility and weather resistance, which lead to its unsatisfactory application effect. Therefore, if asphalt can be modified to overcome its existing defects, its application effect and field scope can be further improved. [0003] Asphalt glue is a kind of mineral adhesive based on petroleum asphalt. I...

AI Technical Summary

Problems solved by technology

[0004] At present, the self-adhesive material used in the HDPE self-adhesive film waterproofing membrane on the market is mainly polymer-modified asphalt. During construction and use, it is prone to aging and aging due to the impact of ultraviolet rays, oxygen and water erosion in the environment. Problems such as cracking and loss of adhesive performance

In the prior art, anti-aging additives are usually not added to asphalt self-adhesive materials due to cost considerations, although some technologies add anti-aging agents to self-adhesive materials to improve anti-aging performance ( Such as phenolic antioxidants 1010, 168, ultraviolet absorbers UV-P, UV-521, etc.), but once the adhesive layer is exposed to the air, it will still lose its viscosity quickly, so even adding anti-aging agents still cannot solve its essence. question

In addition, because HDPE is a kind of non-polar material, its surface energy is low and it is not easy to wet. Therefore, the wetting effect between the adhesive layer and the sheet is poor, and the adhesive layer and the sheet are prone to peeling off during storage or use. , thus losing the waterproof effect, bringing hidden dangers to the waterproof project, and directly affecting the service life of the waterproof membrane

Images