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A kind of modified asphalt for waterproof membrane and preparation method thereof

A technology of modified asphalt and waterproof membrane, which is applied in the direction of building insulation materials, building components, buildings, etc., can solve the problems of unqualified low-temperature flexibility of the membrane, yellowing of the surface of the membrane, and shortened product life, achieving significant economic benefits. Benefits and social benefits, slow decay, guaranteed service life

Active Publication Date: 2019-05-17
JINZHOU DONGFANG YUHONG BUILDING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, in the modified asphalt waterproofing membrane, it often happens that the external and internal quality of the finished product has reached the national standard when it leaves the factory. The low-temperature flexibility of the coil is unqualified, and the product life is reduced; at the same time, the preparation is complicated and the production cost is high

Method used

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  • A kind of modified asphalt for waterproof membrane and preparation method thereof
  • A kind of modified asphalt for waterproof membrane and preparation method thereof
  • A kind of modified asphalt for waterproof membrane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Embodiment 1: the preparation of the modified bitumen that is used for waterproof membrane

[0028] 1. Composition of modified bitumen for waterproofing membrane

[0029]

[0030] 2. Preparation of modified asphalt for waterproof membrane

[0031] Stir 55wt parts of Qinhuangdao 90# asphalt and 8wt parts of pentaerythritol oleate and heat up to 160-170°C, then add 7wt parts of Yanshan Petrochemical SBS1401, 5wt parts of Qingyun Dexin polypropylene stabilizer, and heat at 1000-2000rpm / min Mix for 2 to 3 hours at a rotating speed, then add 25 wt parts of talcum powder, stir for 1 hour, and then place it in a storage tank.

[0032] 3. Performance of waterproof membrane products

[0033] The modified bitumen prepared in Example 1 was used to prepare the waterproof membrane, and the comparison results of product testing performance are shown in Table 1.

[0034] Table 1 - Comparison results of testing performance of modified bitumen waterproofing membrane products

[0...

Embodiment 2

[0037] Embodiment 2: the preparation of the modified bitumen that is used for waterproof membrane

[0038] 1. Composition of modified bitumen for waterproofing membrane

[0039]

[0040] 2. Preparation of modified asphalt for waterproof membrane

[0041] Stir 56wt parts of Qinhuangdao 90# asphalt and 7wt parts of polyethylene glycol to heat up to 160-170°C, then add 6wt% of Yanshan Petrochemical SBS1401, 6wt parts of Qingyun Dexin polypropylene stabilizer, and set the temperature at 1000-2000rpm / min Mix for 2 to 3 hours at a rotating speed, then add 25 wt parts of talcum powder, stir for 1 hour, and then place it in a storage tank.

[0042] 3. Performance of waterproof membrane products

[0043] The modified asphalt prepared in Example 2 was used to prepare the waterproof membrane, and the comparison results of product testing performance are shown in Table 2.

[0044] Table 2 - Comparison results of testing performance of modified bitumen waterproofing membrane products...

Embodiment 3

[0047] Embodiment 3: the preparation of the modified bitumen that is used for waterproof membrane

[0048] 1. Composition of modified bitumen for waterproofing membrane

[0049]

[0050] 2. Preparation of modified asphalt for waterproof membrane

[0051] Stir 55wt parts of Qinhuangdao 90# asphalt and 6wt parts of glycerin to 160-170°C, then add 8wt parts of Yanshan Petrochemical SBS1401, 4wt parts of Qingyun Dexin polypropylene stabilizer, and rotate at 1000-2000rpm / min Mix for 2-3 hours, then add 27 wt parts of talcum powder, stir for 1 hour, and then place it in a storage tank.

[0052] 3. Performance of waterproof membrane products

[0053] The modified asphalt prepared in Example 3 was used to prepare the waterproof membrane, and the comparison results of product testing performance are shown in Table 3.

[0054] Table 3 - Comparison results of testing performance of modified bitumen waterproofing membrane products

[0055]

[0056] Remarks: Petroleum hydrocarbon...

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Abstract

A modified asphalt used for waterproofing membranes and a preparation method thereof, the modified asphalt is composed of the following components in parts by mass: 50-60 parts of petroleum asphalt, 5-8 parts of softener, 5 parts of SBS modifier ~8 parts, 1~5 parts of stabilizer, 20~30 parts of filler; wherein, the softener is polyethylene glycol, glycerol, pentaerythritol oleate or pentaerythritol acrylate. The invention also includes the preparation method of the modified asphalt used for the waterproof coiled material. The modified asphalt waterproofing membrane prepared by using the novel softener in the present invention has greatly improved storage low-temperature flexibility stability and aging resistance compared with modified asphalt prepared by petroleum hydrocarbon softeners, and the preparation steps are simple and the production investment is small. It has significant economic and social benefits.

Description

technical field [0001] The invention relates to a modified asphalt and a preparation method thereof, in particular to a modified asphalt used for waterproof coiled materials and a preparation method thereof. Background technique [0002] Since the mid-1980s, with the rapid development of my country's infrastructure construction, the demand for modified asphalt waterproof materials in infrastructure construction has increased, and the requirements for waterproof membranes have also become higher and higher. Among them, the use of polymer-modified asphalt has become an effective way to improve the low-temperature flexibility of asphalt, but its price is high and the cost is high. Therefore, it is necessary to add a softener in the process of preparing modified asphalt to improve the low temperature flexibility of modified asphalt. [0003] At present, the commonly used modified asphalt softeners in China are petroleum hydrocarbons, such as reducing third-line oil, recycling w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L95/00C08L53/02C08L71/02C08L23/12C08K5/103C08K3/34C08K5/053
CPCC08L95/00C08L2205/03C08L2205/035C08L2555/50C08L2555/60C08L2555/80C08L2555/84C08L2555/86C08L53/02C08L23/12C08K5/103C08K3/34C08L71/02C08K5/053
Inventor 毕书鹏刘金景吴士玮
Owner JINZHOU DONGFANG YUHONG BUILDING MATERIALS
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