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Asphalt-based non-curable heat-resistant waterproof sealant and preparation method thereof

A waterproof sealing, non-curing technology, used in chemical instruments and methods, asphalt material adhesives, non-polymer adhesive additives, etc., can solve problems such as inability to effectively determine the source of cracks, corrosion of building structures, etc. Good properties, good viscosity, and versatile effects

Active Publication Date: 2013-12-04
中建材苏州防水研究院有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the cracks inside the concrete are completely irregular, the traditional plugging method is to cut open the cracks or water leaks and carry out surface plugging. However, underground buildings often cannot effectively judge the source of cracks, and the result is to plug the visible cracks on the surface. , water can still flow irregularly in the tiny cracks inside the concrete, and then seep out from relatively weak parts, corroding the building structure

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] This example provides an asphalt-based non-curing high-temperature resistant waterproof sealant suitable for scraping. The raw material formula is as follows in terms of weight percentage:

[0034] 70# petroleum asphalt 24%, naphthenic oil 10%, oxidized polyethylene modifier (Honeywell Comprehensive Technology Co., Ltd., 8903) 1%, 60 mesh desulfurized reclaimed rubber powder 25%, polyisobutylene (Jinan Xinshun Chemical Co., Ltd., pb2400) 7%, sodium bentonite 30%, sodium dodecyl sulfonate 3%.

[0035] The preparation process of asphalt-based non-curing high-temperature waterproof sealant is as follows: Add 70# petroleum asphalt into the reaction kettle, raise the temperature to 150°C, add naphthenic oil and desulfurized reclaimed rubber powder, stir and disperse at about 180°C for 1 hour, Cool down to 170°C, add oxidized polyethylene modifier and polyisobutylene, stir and disperse for half an hour, continue to cool down to 160°C, add sodium bentonite and sodium dod...

Embodiment 2

[0038] This embodiment provides a bitumen-based non-curing high-temperature resistant waterproof sealant suitable for spraying. The raw material formula is as follows in terms of weight percentage:

[0039] 70# petroleum asphalt 35%, naphthenic oil 5%, paraffin oil 10%, maleic anhydride modified polyethylene modifier (Honeywell Integrated Technology Co., Ltd., 8822) 3%, 50 mesh desulfurized reclaimed rubber powder 20 %, polyisobutylene (Jinan Xinshun Chemical Co., Ltd., pb2400) 2%, ethylene-propylene copolymer (Shenyang Zhongqi Petrochemical Co., Ltd., T612) 5%, sodium bentonite 15%, sodium alkylbenzene sulfonate 5%.

[0040] The preparation process of asphalt-based non-curing high-temperature waterproof sealant is as follows: Add 70# petroleum asphalt into the reaction kettle, raise the temperature to 150°C, add naphthenic oil, paraffin oil and desulfurized reclaimed rubber powder, stir and disperse at about 180°C for 1 After one hour, cool down to 170°C, add maleic anh...

Embodiment 3

[0043] This example provides an asphalt-based non-curing high-temperature resistant waterproof sealant suitable for grouting. The raw material formula is as follows in terms of weight percentage:

[0044] 70# petroleum asphalt 30%, aromatic oil 12%, polyethylene modifier (Honeywell Comprehensive Technology Co., Ltd., 8422) 2%, 60 mesh rubber powder 26%, hydrogenated styrene diene copolymer (Shanghai Fangtian Trading Co., Ltd., HT-524) 5%, sodium bentonite 20%, alkylphenol polyoxyethylene ether 5%.

[0045] The preparation process of asphalt-based non-curing high-temperature waterproof sealant is as follows: Add 70# petroleum asphalt into the reaction kettle, raise the temperature to 150°C, add aromatic oil and rubber powder, stir and disperse at about 180°C for 1 hour, cool down to 170°C ℃, add polyethylene modifier and styrene copolymer, stir and disperse for half an hour, continue to cool down to 160°C, add sodium bentonite and alkylphenol polyoxyethylene ether, stir a...

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Abstract

The invention relates to an asphalt-based non-curable heat-resistant waterproof sealant and a preparation method of the sealant. The sealant comprises the following components in percentage by weight: 10-35% of asphalt, 5-15% of rubber oil, 1-3% of polyolefin processing modifier, 20-30% of 30Mu-100Mu glue powder, 5-10% of tackifier, 10-30 of sodium bentonite, and 3-5% of wetting dispersant reagent. The sealant has the following characteristics of good bonding property, high percentage elongation, good self-healing property, good creep property, possible construction of knife coating, spray coating or grouting, no need to maintain, capability of being constructed on wet foundation surface even under condition of (-40) DEG C and thus effectively shortening the construction period, no organic solvent, low energy consumption in construction, safety, environmental friendliness, no pollution, high-temperature resistance (not flowing at 110 DEC C), low-temperature resistance (not cracking at (-40) DEG C), stable property, good stickiness, and capability of sealing base layer cracks and pores so as to avoid water channeling phenomenon.

Description

technical field [0001] The invention belongs to the technical field of building waterproof materials, and in particular relates to an asphalt-based high-temperature-resistant waterproof sealant and a preparation method thereof. Background technique [0002] In recent years, asphalt-based waterproofing membrane has developed into an important roof waterproofing material because of its excellent performance. However, waterproof membranes usually have fixed dimensions and specifications, but there are many irregular nodes on the roof of the building. During the construction process, it is impossible to achieve a one-time full coverage of the waterproofing layer of the building roof by the membrane. Building roof nodes mainly include: cornices, gutters, slab seals, parapets, drains, pile heads, high-span walls, etc. At present, different construction waterproofing techniques are used for different detail nodes, such as cement nails are used to fix the membrane at the cornice an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J195/00C09J11/08C09J11/04C09J11/06C09K3/10
Inventor 王晓莉董洲李忠人杨胜
Owner 中建材苏州防水研究院有限公司
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