A modified two-component road joint filling adhesive filled with acicular wollastonite with high aspect ratio

A technology of acicular wollastonite and high aspect ratio is applied in the field of modified road joint filling material and road joint filling material. Difficulty, improve stability, and facilitate the effect of sizing difficulty

Active Publication Date: 2016-05-25
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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  • A modified two-component road joint filling adhesive filled with acicular wollastonite with high aspect 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.

Embodiment 2

[0041] (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;

[0042] (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;

[0043] (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.

Embodiment 3

[0045] (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;

[0046] (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;

[0047] (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.

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Abstract

The invention discloses a high aspect ratio acicular wollastonite filled modified two-component road joint glue, which comprises 100 parts of compound mixed base glue; 1-20 parts of high aspect ratio acicular wollastonite; Strong filler 10~50 parts; coloring agent 2~5 parts; plasticizer 10~60 parts, tackifier 0.1~1.5 parts; catalyst 0.1~0.5 parts; crosslinking agent 0.5~6 parts; chain extender 0.1~1.5 parts Parts, and high aspect ratio acicular wollastonite is acicular wollastonite with aspect ratio greater than 20:1. In the present invention, by adding acicular wollastonite with high aspect ratio to the formula, the caulking glue has better static stability, which can effectively avoid the occurrence of inorganic filler sedimentation during the preparation, storage and transportation of the colloid, and improve the stability of the caulking glue and storage time; and the orderly arrangement of acicular wollastonite with high aspect ratio under shear action improves the thixotropy of the joint glue, which is more conducive to the reduction of the difficulty of sizing the joint glue and the improvement of the sizing effect. promote.

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 Patents(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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