Preparation method of star-shaped SBS (styrene butadiene styrene block polymer)-modified asphalt and production method of waterproof coiled material

A technology of modified asphalt and asphalt, which is applied in building insulation materials, building components, buildings, etc. It can solve the problems of difficult asphalt processing and difficult asphalt fusion, and achieve high surface friction coefficient, good low temperature performance and excellent tensile strength. Effect

Active Publication Date: 2011-10-19
XI NIU PI WATERPROOFING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the problems that star-shaped SBS modified asphalt is difficult to process and difficult to integrate with asphalt, and to provide a better compatibility with asphalt and better high and low temperature resistance than the existing star-shaped SBS modified asphalt. More stable star-shaped SBS modified bitumen and its production method for waterproof membrane

Method used

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  • Preparation method of star-shaped SBS (styrene butadiene styrene block polymer)-modified asphalt and production method of waterproof coiled material
  • Preparation method of star-shaped SBS (styrene butadiene styrene block polymer)-modified asphalt and production method of waterproof coiled material
  • Preparation method of star-shaped SBS (styrene butadiene styrene block polymer)-modified asphalt and production method of waterproof coiled material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Select star-shaped SBS with a molecular weight of 100,000 and a block ratio of 30-40 and No. 200 gasoline, with a mass ratio of 1:2. Type SBS, stirring and soaking for 10-36 hours, so that the star-shaped SBS is fully swollen; in the asphalt mixing tank, add 70-130 heavy-duty asphalt, the weight of the asphalt is 45%; the weight of the swollen star-shaped SBS is 5, stir and heat To 150 ~ 200 ℃, then add swollen star-shaped SBS, anti-butyl naphthenate 3%, ordinary rubber powder 10%, phosphite tris (2,4-di-tert-butylphenyl) 3%; calcium carbonate Powder 34%, modified for 30 minutes to 150 minutes, that is, a uniform and stable modified asphalt is obtained, and one side is covered on the high-density polyethylene base to make a coil.

Embodiment 2

[0023] Select star-shaped SBS with a molecular weight of 200,000 and a block ratio of 40-60 and No. 0 diesel oil. The mass ratio is 1:3. Type SBS, stirring and soaking for 20-40 hours, so that the star-shaped SBS is fully swollen; in the asphalt mixing tank, add 70-130# heavy traffic asphalt, the weight of the asphalt is 52%; the weight of the swollen star-shaped SBS is 8, stir and heat To 150 ~ 200 ℃, then add swollen star-shaped SBS, anti-butyl naphthenate 3%, synthetic rubber powder 12%, functional additives carboxypolysiloxane 2%, polymethylethoxysilane 3% , tris(2,4-di-tert-butylphenyl) phosphite 3%; talcum powder 17%, modified for 30min to 150min, to obtain uniform and stable modified asphalt, double-sided covered on the polyethylene base, Made into coils.

Embodiment 3

[0025]Select star-shaped SBS and kerosene with a molecular weight of 250,000 and a block ratio of 40-60. The mass ratio is 1:4. Soak for 50 hours to fully swell the star-shaped SBS; add 70-130# heavy-duty asphalt to the asphalt mixing tank, the weight of the asphalt is 38%; the weight of the swollen star-shaped SBS is 12%, stir and heat to 150-200°C , then add swollen star-shaped SBS, 2% anti-butyl naphthenate, 15% synthetic rubber powder, 6% mixture of functional additive cyclomethicone and polynaphthalene sulfonic acid sodium salt, phosphite tri( 5% of 2,4-di-tert-butylphenyl) ester; 22% of asbestos powder, modified for 30 minutes to 150 minutes to obtain uniform and stable modified asphalt, and the modified asphalt is used for the waterproof wall of the basement.

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Abstract

The invention provides star-shaped SBS (styrene butadiene styrene block polymer)-modified asphalt, which is a composition composed of asphalt, swelling star-shaped SBS, filler and aids and solves the problem that star-shaped SBS used as an asphalt modifier is difficult to process. The production method of the star-shaped SBS-modified asphalt involves the following steps: adding star-shaped SBS swelled by a non-polar solvent to asphalt, modifying at the temperature of 180-210 DEG C for 50-150 minutes by a colloid mill or a powerful high-speed shearing stirrer, adding the filler and aids and uniformly stirring so as to form the uniform and stable modified asphalt. The modified asphalt can be made into a waterproof coiled material with excellent performance as well as a waterproof and leak-proof adhesive used for building roofs, basements, expressways, sealants, tunnels or water conservancy facilities. The modified asphalt has the characteristics of better compatibility with asphalt and better high-temperature and low-temperature resistance, compared with existing SBS modified asphalt.

Description

technical field [0001] The invention relates to an asphalt waterproof coiled material, in particular to the preparation of SBS modified asphalt and the production method of the waterproof coiled material. technical background [0002] Asphalt waterproofing membrane refers to base paper, plastic film, fiber felt and other carcass materials dip-coated with asphalt, and the surface is sprinkled with powdery, granular or flake materials to make rollable sheet waterproofing materials. Asphalt waterproofing membranes include tire coiled materials and Tireless roll material, a roll material made of thick paper or plastic film, glass cloth, asbestos cloth, cotton and linen fabrics and other tire materials impregnated with petroleum asphalt, called tire roll material; asbestos, rubber powder, etc. are mixed with asphalt Among the materials, the roll-shaped material made by rolling is called tireless roll material. The traditional asphalt material is easy to age and not heat-resistant...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K5/526C08K3/26C08K3/34
Inventor 卢桂才
Owner XI NIU PI WATERPROOFING TECH CO LTD
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