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Production process of low-temperature calendered asphalt waterproof coiled material

A technology of asphalt waterproofing membrane and production process, which is applied in building thermal insulation materials, building components, applications, etc., can solve the problems of difficult control of heating temperature, low heating efficiency, high energy consumption, etc., so as to avoid thermal convection movement and improve heating efficiency. , the effect of reducing heat absorption

Pending Publication Date: 2021-03-12
CHINA STATE CONSTR READY MIXED CONCRETE CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the existing calendering process has a mature preparation technology, it also has many defects. For example, the melting temperature of bitumen waterproofing membrane is about 170-210°C, and the dipping temperature is 160-200°C. Higher production temperature will inevitably lead to higher production temperature. High energy consumption; and the heating efficiency of the heat conduction oil heating method currently used is low, and the heating temperature is not easy to control and other defects; in addition, the higher temperature will make the oil and harmful substances in the asphalt component volatilize quickly, affecting the working environment. Not conducive to environmental protection

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1. Use SBS modified bitumen to produce bitumen waterproof membrane.

[0017] 2. During the dehydration and refining process of asphalt materials, microwave heating with a power of 1.0KW is used to flash the water and improve the heating efficiency. At the same time, infrared thermal imaging is used for real-time temperature control during the dehydration refining process to ensure efficient dehydration.

[0018] 3. During the preparation of asphalt materials, microwave heating with a frequency of 2.45GHZ and a power of 0.4KW is used. The viscous components in asphalt are heated, while the volatile oils are not. Avoid the energy waste caused by heating the system as a whole in the traditional heat conduction oil heating method; at the same time, use infrared thermal imaging to perform real-time temperature control during the preparation process to ensure that the temperature during the asphalt preparation process is between 100-120°C.

[0019] 4. In the process of dipp...

Embodiment 2

[0022] 1. Use APP modified bitumen to produce bitumen waterproof membrane.

[0023] 2. During the dehydration and refining process of asphalt materials, microwave heating with a power of 1.1KW is used to make the water flash and improve the heating efficiency. At the same time, infrared thermal imaging is used for real-time temperature control during the dehydration refining process to ensure efficient dehydration.

[0024] 3. During the preparation of asphalt materials, microwave heating with a frequency of 2.45GHZ and a power of 0.6KW is used. The viscous components in asphalt are heated, while the volatile oils are not. Avoid the waste of energy caused by heating the system as a whole in the traditional heat conduction oil heating method; at the same time, use infrared thermal imaging to control the temperature in real time during the preparation process to ensure that the temperature during the asphalt preparation process is 115-120 °C.

[0025] 4. In the process of dipp...

Embodiment 3

[0028] 1. Use polyvinyl chloride modified bitumen to produce bitumen waterproofing membrane.

[0029] 2. During the dehydration and refining process of asphalt materials, microwave heating with a power of 0.9KW is used to flash the water and improve the heating efficiency. At the same time, infrared thermal imaging is used for real-time temperature control during the dehydration refining process to ensure efficient dehydration.

[0030] 3. During the preparation of asphalt materials, microwave heating with a frequency of 5.8GHZ and a power of 0.56KW is used. The viscous components in asphalt are heated, while the volatile oils are not. Avoid the waste of energy caused by heating the system as a whole in the traditional heat transfer oil heating method; at the same time, use infrared thermal imaging for real-time temperature control during the preparation process to ensure that the temperature during the asphalt preparation process is at 100-110 °C.

[0031] 4. During the dip...

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Abstract

The invention discloses a production process of a low-temperature calendered asphalt waterproof coiled material. Microwave heating is adopted in the processes of dehydration and refining of an asphaltmaterial, preparation of the asphalt material, dip-coating of the coiled material and calendering of the coiled material, and after calendering is completed, the microwave output power is gradually reduced to zero in the cooling process. The asphalt material is heated under the action of microwaves, so that the viscosity of the asphalt material can be reduced, the melting temperature and the calendering temperature of the asphalt waterproof coiled material can be reduced to 100 to 130 DEG C, the emission of harmful gas in the production process of the asphalt waterproof coiled material is reduced, the heating efficiency is improved, and the energy is saved.

Description

technical field [0001] The invention relates to a production process of a waterproof coiled material, in particular to a production process of a low-temperature calendered asphalt waterproof coiled material. Background technique [0002] Asphalt waterproofing membrane is a kind of waterproof material often used in civil engineering. In roofing engineering, underground engineering and bridge engineering, asphalt waterproofing membrane can prevent the leakage of external moisture and resist the erosion of cement-based materials by external chemicals. Ensure the service life of the building and ensure a comfortable living or working environment inside. Existing asphalt waterproofing membranes are mostly prepared by calendering. Although the existing calendering process has a mature preparation technology, it also has many defects. For example, the melting temperature of bitumen waterproofing membrane is about 170-210°C, and the dipping temperature is 160-200°C. Higher producti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29D7/01B29C43/24B29C43/52B29C43/58B29C67/00B29B7/82B29C67/24B05C3/00C08L95/00C08L53/02C08K3/32C08L27/06C08L9/06C08J3/28B29L7/00
CPCB29D7/01B29C43/24B29C43/52B29C43/58B29C67/0011B29B7/823B29B7/826B29C67/245C08J3/28B05C3/005C08J2395/00C08J2453/02C08J2427/06C08J2409/06C08K2003/323B29C2043/5816B29L2007/005
Inventor 刘凯王军赵日煦高飞黄汉洋谯理格
Owner CHINA STATE CONSTR READY MIXED CONCRETE CO LTD
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