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Production process of polymer-modified asphalt waterproofing membrane

A technology for modifying asphalt and waterproofing membranes, applied in building structures, building insulation materials, building components, etc., can solve the problems of complex process routes and difficult operations, and achieve good plasticizing effect, short residence time, and simplified production. The effect of craftsmanship

Active Publication Date: 2017-01-18
QINGDAO KEHUA M M M
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although an extruder is used to plasticize asphalt and polymers, various raw materials are mixed through a thermal insulation mixer, and each step is carried out in stages. It is a batch-type manufacturing process, and the process route is complicated and difficult to operate.

Method used

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  • Production process of polymer-modified asphalt waterproofing membrane
  • Production process of polymer-modified asphalt waterproofing membrane

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] like figure 1 As shown, the production process of the polymer-modified asphalt waterproofing membrane in this embodiment produces a hot-melt double-sided polymer-modified asphalt waterproofing membrane, including the following steps:

[0037] Step 1: Mix the polymer modifier (select SBS) and anti-aging agent (select antioxidant 1010 / UV531) according to the ratio in Table 1, mix evenly, add the feeding device of the main extruder, the temperature of the feeding section of the main extruder As shown in table 2, feeding section (1-4 zone), main extruder is parallel twin-screw extruder;

[0038]Step 2: Freeze and crush the asphalt, add a plasticizer (select the third-line engine oil) and mix with the asphalt, and gradually add fillers (select talcum powder) after mixing evenly; stir and mix again; add the mixture to the feeding device of the auxiliary extruder to assist The temperature range of the extruder is 60-185°C, and the auxiliary extruder is a single-screw extruder...

Embodiment 2

[0048] like figure 1 As shown, the production process of the polymer-modified asphalt waterproofing membrane in this embodiment produces a self-adhesive single-sided polymer-modified asphalt waterproofing membrane, including the following steps:

[0049] Step 1: Mix the polymer modifier (select SBS and SIS) and anti-aging agent (select antioxidant 1010 / UV531) according to the ratio in Table 3, and add them to the feeding device of the main extruder. Section temperature is as shown in table 4, feeding section (1-4 zone), and main extruder is parallel twin-screw extruder;

[0050] Step 2: Freeze and crush the asphalt (No. 70), add plasticizer (naphthenic oil) and mix with asphalt, after mixing evenly, gradually add filler (talcum powder) and stir again, add interface reactant (polyacrylate), plasticizer Stir the viscous resin (rosin and terpene resin) evenly again; add the mixture to the feeding device of the auxiliary extruder, the temperature range of the auxiliary extruder i...

Embodiment 3

[0060] like figure 2 As shown, the production process of the polymer-modified asphalt waterproofing membrane of this embodiment produces a single-side coated self-adhesive polymer-modified asphalt waterproofing membrane, including the following steps:

[0061] Step 1: Mix the polymer modifier (SBS / SIS / IIR) and anti-aging agent (antioxidant 1010 / UV531) according to the ratio in Table 5, and add them to the feeding device of the main extruder, and the feeding of the main extruder Section temperature is as shown in table 6, feeding section (1-4 zone), main extruder is compound single-screw extruder;

[0062] Step 2: Freeze and crush the asphalt (No. 70), add plasticizer (naphthenic oil) and mix with asphalt, after mixing evenly, gradually add filler (talcum powder) and stir again, add interface reactant (polyacrylate), plasticizer Stir the viscous resin (rosin and terpene resin) evenly again; add the mixture to the feeding device of the auxiliary extruder, the temperature range...

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Abstract

The invention belongs to the field of waterproof coil production process, and relates to a production process for preparing a polymer modified asphalt waterproof coil. The process comprises the following steps: mixing a polymer modifier with an anti-aging agent, adding the mixture into a feeding device of a main extruder; freezing and crushing asphalt, adding plasticizer to mix with the asphalt, uniformly mixing, then gradually adding filler for stirring and mixing; adding the mixture into a feeding device of an auxiliary extruder, starting the main extruder, starting the auxiliary extruder when the polymer modifier is plasticized and reaches the melting section of the main extruder, and connecting the auxiliary extruder with the tail end of the charging section of the main extruder; enabling the polymer modified asphalt to pass through the cooling section of the main extruder, setting vacuum exhaust at the tail end of the cooling section; feeding the polymer modified asphalt into a net changing section, coating to a waterproof coil base material by virtue of a flat die; and compounding an isolation protecting layer to the surface of the polymer modified asphalt. According to the process, the polymer is plasticized completely, the heating time for the polymer is reduced, the waterproof coil base material is directly coated with the polymer modified asphalt, and the process is simple.

Description

technical field [0001] The invention belongs to the technical field of production technology of waterproof coiled material, and in particular relates to a production process for preparing polymer-modified asphalt waterproof coiled material by a double-stage extrusion method. Background technique [0002] Bituminous waterproofing membranes have been widely used, but because bitumen has significant temperature sensitivity (easy to soften at high temperature, easy to crack at low temperature), low mechanical properties and elastic properties, it is easy to crack and loose due to aging. Significant thermal sensitivity prevents asphalt mixtures from exhibiting good performance at high and low temperatures, and asphalt properties must be modified to enhance product performance. [0003] By mixing polymers into asphalt, it can significantly improve the high-temperature and low-temperature performance of asphalt, improve the elastic-plastic properties of asphalt, increase durability...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C47/00B29C47/76B29C47/56B29C47/92C08L95/00C08L53/02B29C48/76B29C48/92
CPCB29C48/0014B29C48/08B29C48/49B29C48/766B29C48/92B29C2948/92704C08L53/025C08L95/00
Inventor 王全基杨有财
Owner QINGDAO KEHUA M M M
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