Molecular adhesive used for TPZ waterproof rolls and preparation method of molecular adhesive

Abstract

The invention discloses molecular adhesive used for TPZ waterproof rolls and a preparation method of the molecular adhesive. The molecular adhesive comprises, by weight, 50-70 parts of asphalt, 8-15 parts of second-vacuum naphthenic oil, 5-10 parts of SBS rubber, 3-8 parts of SBR rubber, 2-5 parts of chloroprene rubber, 1-3 parts of nitrile rubber, 3-8 parts of oil resin, and 5-10 parts of calcium powder. The adhesive layer formed by the adhesive can be fused and adhered at low temperature, and the molecular adhesive is good in adhesive sealing performance and is used for TPZ waterproof rolls, and performance of the TPZ waterproof rolls is improved.

Description

technical field [0001] The invention relates to an adhesive, in particular to a molecular adhesive used for TPZ waterproof coiled material and a preparation method thereof. Background technique [0002] Adhesives, also known as adhesives, are non-metallic media materials that make an object closely connected to another object. The adhesive only occupies a very thin layer of volume between the two adherend surfaces, but after the adhesive is used to complete the bonding construction, the obtained adhesive joints can meet the requirements of actual needs in terms of mechanical properties and physical and chemical properties. It can effectively bond materials together. With the development of economy, synthetic adhesives are increasingly used in various fields. [0003] The performance of adhesives used in waterproofing membranes in the construction industry plays an important role in the waterproofing effect of waterproofing membranes. [0004] At present, the adhesives use...

AI Technical Summary

Problems solved by technology

[0004] At present, the adhesives used in waterproofing membranes in the construction industry have the following shortcomings, which affect the waterproofing effect of waterproofing membranes

[0005] (1) The adhesion temperature of the adhesive layer is poor. When the ambient temperature is ≤15°C, the adhesive layer cannot achieve a bonded state of fusion, and the viscosity of the material is only surface adhesion. At this time, the adhesion between the adhesive layers is not available. waterproof performance

[0006] (2) The wet laying of the coiled material and the base layer is prone to failure of sealing and bonding, which increases the risk of water leakage in large areas of the project:

[0007] ①Low temperature wet laying is prone to sealing failure. When the ambient temperature (≤5-10°C) of ordinary wet laying coils is low, the viscosity of the adhesive layer decreases rapidly. At this time, the construction of the coils cannot be bonded to the cured cement slurry , and wet lay seal failure occurs

[0008] ② High temperature wet laying is prone to sealing failure. Traditional wet laying coils use cement slurry as the bonding medium for the lap joints. The coils within 4 hours of construction cannot be sealed because the cement slurry in the lap joints has not initially solidified. Water spray cooling measures are taken. When the construction environment temperature is high, the high temperature will cause the water in the cement mortar to evaporate, and the coiled material and the base layer will be separated by the evaporated water vapor, resulting in the failure of the wet seal of the waterproof layer.

[0009] ③Sudden rainfall during wet paving construction is prone to seal failure. Traditional wet paving coils use cement slurry as the bonding medium for lap joints. If sudden rainfall occurs during wet paving construction, the rain will dilute the construction4 Within hours, the lapped edge of the coil has not initially set and cured the cement slurry, which enters between the coil and the base layer, causing the waterproof layer to fail to seal when wet

[0011] ①Water-laid waterproof layer that fails to be sealed. The guarantee of waterproof performance mainly depends on the continuous sealing of the lap joints. Common wet-laid coils are mostly bonded with cement slurry as the medium. Rigid cement grout is interposed between two layers of flexible materials. It is easy to break, causing water seepage at the lap joints, causing water leakage in large areas of the project

A small number of lap joints of wet-laid coils are bonded with an adhesive layer. Due to the poor viscosity and temperature of the adhesive layer, direct bonding cannot achieve the waterproof effect, and water leakage will still occur in the project

[0012] ②Due to the failure of the wet laying seal, any damage to the coil layer will inevitably lead to large-scale water leakage in some parts of the project

If the waterproof layer is damaged or defective, the open water infiltrated into the waterproof layer will spread along the mortar leveling layer and the channel between the structural layer and the channel, causing engineering leakage

[0013] (4) The construction quality of ordinary wet-laid coils is greatly affected by weather factors. The construction quality of wet-laid coils cannot be guaranteed when the ambient temperature is too high or too low, or when there may be sudden rainfall during the construction process, and it is easy to cause project leakage

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