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Modified dual-component road crack pouring adhesive filled with needle-like wollastonite with high length-to-diameter ratio

A technology of needle-shaped wollastonite and high aspect ratio, which is applied in the field of modified road joint adhesive materials and road joint adhesive materials, can solve the problems of simple construction without paying attention to it, and achieve the reduction of sizing Difficulty, avoiding settling, improving effect of thixotropy

Active Publication Date: 2014-10-22
JIANGSU PROVINCIAL COMM PLANNING & DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] At present, most of the patents of joint sealing glue (sealant material) in China are related to the formula design, processing technology and construction method of silicone sealing material joint filling material under normal temperature conditions, but whether the cold resistance of the material can be maintained in severe cold regions And storage stability, ease of construction, etc. are not considered seriously

Method used

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  • Modified dual-component road crack pouring adhesive filled with needle-like wollastonite with high length-to-diameter ratio

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] (1) Put 100 parts of compound mixed base rubber, 5 parts of acicular wollastonite with high aspect ratio and 50 parts of reinforcing filler into the mixer, start stirring and heat up to 100°C, and mix at 100°C at a speed of 1000rpm After 1 hour, vacuumize, cool to room temperature, then add 25 parts of plasticizer, 2 parts of colorant, and 1.5 parts of tackifier in sequence according to the ratio of parts by weight, then stir and vacuumize for 20 minutes; obtain component A;

[0038] (2) Mix and stir 6 parts of crosslinking agent, 0.5 part of chain extender and 0.1 part of catalyst evenly to obtain component B;

[0039] (3) Slowly add the prepared B component to the slow stirring component A, and then stir at a speed of 500rpm for 20 minutes, and after mixing evenly, the acicular silica fume with high aspect ratio for asphalt pavement crack repair is prepared Stone-filled modified two-component road joint glue.

[0040]

Embodiment 2

[0042] (1) Put 100 parts of compound mixed base rubber, 10 parts of acicular wollastonite with high aspect ratio and 35 parts of reinforcing filler into the mixer, start stirring and heat up to 100°C, and mix at 100°C at a speed of 1200rpm After 1.5 hours, vacuumize, cool to room temperature, then add 50 parts of plasticizer, 4 parts of colorant, and 0.5 parts of tackifier in sequence according to the ratio of parts by weight, then stir and vacuumize for 30 minutes; obtain component A;

[0043] (2) Mix and stir 4 parts of crosslinking agent, 1 part of chain extender and 0.2 parts of catalyst evenly to obtain component B;

[0044] (3) Slowly add the prepared component B to the slow stirring component A, then stir at a speed of 300rpm for 20 minutes, and after mixing evenly, acicular silica fume with high aspect ratio for asphalt pavement crack repair is prepared Stone-filled modified two-component road joint glue.

[0045]

Embodiment 3

[0047] (1) Put 100 parts of compound mixed base rubber, 15 parts of acicular wollastonite with high aspect ratio and 25 parts of reinforcing filler into the mixer, start stirring and raise the temperature to 100°C, and mix at 100°C at a speed of 1100rpm After 1.2 hours, vacuumize, cool to room temperature, then add 15 parts of plasticizer, 2.5 parts of colorant, and 0.8 parts of tackifier in sequence according to the ratio of parts by weight, then stir and vacuumize for 25 minutes; obtain component A;

[0048] (2) Mix and stir 2.5 parts of crosslinking agent, 0.8 parts of chain extender and 0.3 parts of catalyst evenly to obtain component B;

[0049] (3) Slowly add the prepared B component to the slow stirring component A, and then stir at a speed of 400rpm for 20 minutes, and after mixing evenly, the acicular silica fume with high aspect ratio for asphalt pavement crack repair is prepared Stone-filled modified two-component road joint glue.

[0050]

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Abstract

The invention discloses a modified dual-component road crack pouring adhesive filled with needle-like wollastonite with a high length-to-diameter ratio. The modified dual-component road crack pouring adhesive comprises the following raw materials in parts by weight: 100 parts of compound mixed base glue, 1-20 parts of needle-like wollastonite with high length-to-diameter ratio, 10-50 parts of a reinforcing filler, 2-5 parts of a coloring agent, 10-60 parts of a plasticizer, 0.1-1.5 parts of a tackifier, 0.1-0.5 part of a catalyst, 0.5-6 parts of a crosslinking agent and 0.1-1.5 parts of a chain extender, wherein the needle-like wollastonite with the high length-to-diameter ratio is the needle-like wollastonite of which the length-to-diameter ratio is greater than 20:1. The needle-like wollastonite with the high length-to-diameter ratio is added to the formula, so that the crack pouring adhesive has better static stability, inorganic filler sedimentation in preparation, storage and transportation of the adhesive can be effectively avoided, the stability and the storage time of the crack pouring adhesive are improved, the thixotropy of the crack pouring adhesive is increased by ordered arrangement of the needle-like wollastonite with the high length-to-diameter ratio under the shearing action, and reduction of the sizing difficulty of the crack pouring adhesive and improvement of the sizing effect are facilitated.

Description

technical field [0001] The invention relates to a road joint-filling adhesive material, in particular to a modified road joint-filling adhesive material, which belongs to the technical field of chemical materials. Background technique [0002] The traditional joint filling materials in the industry include asphalt, neoprene, polysulfide and polyurethane sealing materials, which cannot meet the long-term use under low temperature conditions. However, the existing silicone rubber joint filling materials can reach our The required performance, but in order to achieve excellent tensile elongation, the base glue with longer chain segment and higher viscosity is often used. In order to increase the strength of the material and reduce the cost, more fillers are often added, resulting in joint filling The viscosity of the material is higher, the processing process is more complicated, and the construction conditions are harsh. [0003] Thixotropy refers to the property that a liqui...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/06C08L71/00C08K7/10C08K3/36C08K3/26C08K3/04
Inventor 张业茂方珏朱启洋庄园胡光伟张健康李新贺陈娟朱岩王坤张衡严以楼
Owner JIANGSU PROVINCIAL COMM PLANNING & DESIGN INST
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