Modified asphalt composition with creeping characteristic and preparation method thereof

A technology of modified asphalt and creep characteristics, which is applied to building structures, building components, building insulation materials, etc., can solve problems such as difficulty in finding the source of leakage, difficulty in repair work, water channeling, etc., to prolong service life, The effect of improving reliability and good fluidity

Inactive Publication Date: 2011-04-20

ZHEJIANG WOPUMAN HIGH NEW MATERIALS

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AI-Extracted Technical Summary

Problems solved by technology

But another problem has arisen from this, that is, once the waterproof layer produces small holes or cracks in a certain part and leaks water, there will be water channeling u...

Method used

...

Abstract

The invention provides a modified asphalt composition with a creeping characteristic, which comprises the following components in parts by weight: 15-60 parts of asphalt, 3-15 parts of modifying material, 5-30 parts of rubber powder, 15-60 parts of softening agent, 15-60 parts of inorganic powder, 3-25 parts of viscosity regulating agent, 0.3-1.5 parts of peptizing agent and 0.1-2 parts of coupling agent. A preparation method of the modified asphalt composition comprises the following steps of: adding the softening agent into a reaction kettle, heating to 170 to 200 DEG C, adding the modifying material, agitating, adding the asphalt and the rubber powder, and agitating for 1-2 h to obtain an intermediate raw material; levigating the intermediate raw material to 150-250 meshes, and putting back to the reaction kettle; and finally, adding the inorganic powder, the viscosity regulating agent, the peptizing agent and the coupling agent into the reaction kettle, agitating and dispersing uniformly. The modified asphalt composition has the characteristics of excellent water-proof performance, strong binding capability and continuous binding capability, large elongation percentage and good low-temperature flexibility.

Application Domain

Building insulations

Technology Topic

Bituminous waterproofingMaterials science +3

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Examples

Experimental program(10)
Comparison scheme(2)

Example Embodiment

[0031] Example 1:

[0032] The ratio of various raw materials in this embodiment is as follows:

[0033] Table 1

[0034] name

[0035] Coupling agent (aluminate)

[0036] The asphalt in Table 1 is made by mixing 100# and 10# petroleum asphalt at a ratio of 5:1 to adjust the softening point and ductility of the asphalt.

[0037] Production is carried out according to the raw material ratio in Table 1. The specific steps are as follows:

[0038] First, put the softener low volatile aromatic oil into the reactor, heat the low volatile aromatic oil to 170-200°C, and put the modified material styrene-butadiene-styrene block copolymer (SBS) and poly Propylene (PP) is stirred and dispersed evenly, the speed of the stirring head is 100~200r/min, and the stirring time is 1~2 hours;

[0039] Then, put the asphalt and rubber powder into the reactor and stir and disperse evenly, the rotating speed of the stirring head is 100-200r/min, and the stirring time is 1-2 hours to obtain the intermediate raw material;

[0040] Then, the intermediate raw materials are sent to the colloid mill to be finely ground to a fineness of 150-250 mesh, and then returned to the reactor after being finely ground;

[0041] Finally, add inorganic powder talcum powder, viscosity modifier terpene resin, paraffin wax, rosin resin, peptizer sodium pyrophosphate, maleic anhydride, coupling agent aluminate to the reaction kettle, stir and disperse evenly, and the speed of the stirring head is controlled at 250-400r/min, and the stirring time is 1 to 2 hours to obtain a modified asphalt composition with creep characteristics.

Example Embodiment

[0042] Example 2:

[0043] The ratio of various raw materials in this embodiment is as follows:

[0044] Table 2

[0045] name

[0046] Coupling agent (silane coupling agent)

[0047] The asphalt in Table 2 is made by mixing 100# and 10# petroleum asphalt in a 4:1 ratio to adjust the softening point and ductility of the asphalt.

[0048] Production is carried out according to the raw material ratio in Table 2, and the specific steps are the same as in Example 1.

Example Embodiment

[0058] Example 3:

[0059] The ratio of various raw materials in this embodiment is as follows:

[0060] Table 6

[0061] name

[0062] Softener (low volatile naphthenic oil)

[0063] The asphalt in Table 6 is made by mixing 100# and 10# petroleum asphalt in a ratio of 4.2:1 to adjust the softening point and ductility of the asphalt.

[0064] The production is carried out according to the raw material ratio in Table 6, and the specific steps are the same as in Example 1.

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Description & Claims & Application Information

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Classification and recommendation of technical efficacy words

Extended service life
avoid rapid aging

Wind power and photovoltaic power complementary power supply system based on mixed energy accumulation of super capacitor accumulator

InactiveCN101309017AReduced installed capacityExtended service life

Owner:INST OF ELECTRICAL ENG CHINESE ACAD OF SCI

Modified asphalt composition with creeping characteristic and preparation method thereof

AI-Extracted Technical Summary

Problems solved by technology

Method used

Abstract

Image

Examples

Example Embodiment

Example Embodiment

Example Embodiment

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Description & Claims & Application Information

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