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Aging-resistant caulking filling material and preparation method thereof

A filling material and anti-aging technology, which is applied to building insulation materials, building components, pavement details, etc., can solve the problems of poor aging resistance of joint filling materials, affect the service life of bridge decks, and high-grade joint filling construction, and achieve joint filling construction The effect of low temperature, prolonging the service life and delaying the aging speed

Active Publication Date: 2013-04-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this filler is that the addition of styrene-butadiene-styrene block copolymer (SBS) is relatively high, the product viscosity is relatively high, and the construction of joints is relatively high; and the modifier styrene-butadiene- Styrene block copolymer (SBS) contains a certain amount of C=C double bonds, which is easy to age and degrade under the action of oxygen and ultraviolet rays, and the joint filling material has poor aging resistance, which affects the service life of the bridge deck

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Heat 100 parts (parts by weight, the same below) of petroleum asphalt to 150°C, add 6 parts of Fufang extract oil (furfural refined extract oil, the same below), 8 parts of SBS YH-791 and 2 parts of EBS, 0.3 parts of anti Oxygen agent 168, keep the temperature at 165-170°C, shear and mix for 20 minutes, add 0.11 parts of cross-linking agent, continue shearing reaction for 40 minutes, then add 3 parts of light shielding agent DL8, continue shearing for 20 minutes, test bridge deck caulking The anti-aging properties of the materials are shown in Table 1.

Embodiment 2

[0033] Heat 100 parts by weight of petroleum asphalt to 150°C, add 8 parts of Fufang extract oil, 10 parts of SBS YH-791 and 3 parts of EBS, 0.8 parts of antioxidant 168, keep the temperature at 165-170°C, and shear and mix for 20 minutes , add 0.13 parts of cross-linking agent, continue shearing reaction for 40 minutes, then add 2.0 parts of light shielding agent DL8, continue shearing for 20 minutes, test the anti-aging performance of bridge deck caulking filling materials, see Table 1.

Embodiment 3

[0035] Heat 100 parts by weight of petroleum asphalt to 150°C, add 10 parts of Fufang extract oil, 10 parts of SBS YH-791 and 3 parts of EBS, 0.6 parts of antioxidant 168, keep the temperature at 165-170°C, and shear and mix for 20 minutes , add 0.15 parts of cross-linking agent, continue shearing reaction for 40 minutes, then add 2 parts of light shielding agent DL8, continue shearing for 20 minutes, test the anti-aging performance of bridge deck caulking filling materials, see Table 1.

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Abstract

The invention provides an aging-resistant caulking filling material and a preparation method thereof. The caulking filling material comprises the following components: 100 parts of petroleum asphalt, 5-20 parts of aromatic-hydrocarbon-enriched extract oil, 3-20 parts of styrene-butadiene-styrene block polymer (SBS), 1-8 parts of ethylene bis stearamide (EBS), 0.3-1.5 parts of antioxidant 168, 1-5 parts of light screening agent and 0.1-0.3 part of crosslinking agent. The preparation method comprises the following steps: heating to melt the asphalt, adding the extract oil, SBS, EBS and antioxidant, shearing, uniformly mixing, and then adding the crosslinking agent and light screening agent. The caulking filling material provided by the invention has better high / low temperature property and low crack pouring construction temperature; and above all, the antioxidant and light screening agent are introduced, so that the aging speed of the caulking asphalt material is reduced, the aging resistance of the bridge floor caulking material is obviously improved, and the service life of the bridge floor is prolonged. Thus, the invention can be used for the paving and repairing of expansion joints and cracks on the bridge floor.

Description

technical field [0001] The invention relates to an anti-aging caulking filling material and a preparation method thereof. The caulking filling material can be used for paving and repairing expansion joints and cracks on bridge pavement. Background technique [0002] The bridge expansion joint is an important part of the bridge structure, and the performance of the bridge expansion joint directly affects the service life of the bridge and the driving comfort. Filled bridge expansion joints are a new type of bridge expansion joints. Its main working mechanism is to rely on the elasticity of the mixture of high-elastic special asphalt binder and stone to adapt to the displacement of the bridge end due to temperature and traffic loads. At the same time, because it has many advantages such as simple construction, low cost, comfortable driving, long service life, and half-width construction without interrupting traffic, it is favored by scientific researchers from all over the wor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L95/00C08L53/02C08K13/02C08K5/01C08K5/20C08K3/06C08K3/30C08K3/04C08K3/22E01C11/02
Inventor 陈杰宣根海石军章范思远
Owner CHINA PETROLEUM & CHEM CORP
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