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Preparation method of compound high molecular adhesive for water permeable brick or water permeable pavement

A technology of composite polymer and permeable pavement, which is applied in the field of preparation of green environment-friendly permeable bricks or composite polymer adhesives for permeable pavement, can solve the problems of poor mechanical properties, unstable thermodynamics, poor storage stability, etc. The effect of good performance, improved comprehensive performance and low cost

Inactive Publication Date: 2015-05-20
刘海宁
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent uses a simple physical blending method to form a thermodynamically unstable system with microphase separation and poor compatibility between substances, resulting in certain defects in the product, such as poor mechanical properties and poor storage stability.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] (1) Preparation of OH group-terminated prepolymer A: Add 74 parts by weight of castor oil (hydroxyl monomer) and 10 parts by weight of hydroxyl-terminated siloxane-1 (functional resin) at room temperature In a reaction kettle with a stirring device, heat at a constant temperature in a water bath at 90°C, vacuumize and dehydrate for 1.0h at a vacuum of 0.1Mpa; cool down to 30°C, add 6 parts by weight of toluene diisocyanate (isocyanate monomer) and stir Evenly, slowly heat up to 75°C, then add 0.05 parts by weight of di-n-butyltin dilaurate (catalyst) to react for 2 hours; then cool down to 25°C, add 9 parts by weight of 1,4-butanediol (chain extender) Stir evenly with diethylenetriamine (crosslinking agent) of 1 weight part for 0.5h to obtain a yellow transparent viscous liquid with good fluidity;

[0052] (2) Preparation of NCO group-terminated prepolymer B: at room temperature, 17 parts by weight of polyethylene adipate diol (hydroxyl monomer) was added to a reactor w...

Embodiment 2

[0055] Prepare the adhesive in the same manner as in Example 1, except that the weight part of castor oil in the prepolymer A with OH groups terminated in step (1) is changed to 44 parts by weight, and 22 parts by weight of polyethylene glycol butylene glycol ester diol, the functional resin is replaced by 2 parts by weight of hydroxyl-terminated siloxane-1, 2 parts by weight of silane coupling agent, 8 parts by weight of tetrafluorofluorocarbon resin and 8 parts by weight of trifluoro Fluorocarbon resin, the weight part of toluene diisocyanate (TDI) becomes 4.5, the chain extender is replaced by 7.5 parts by weight of ethylene glycol, and the cross-linking agent is replaced by 2 parts by weight of triethylenetetramine, and the light yellow, flowing It is a transparent viscous liquid with better properties; and the prepared OH group-terminated prepolymer A and NCO group-terminated prepolymer B are mixed and stirred according to R=1.07.

Embodiment 3

[0057] The adhesive was prepared in the same manner as in Example 1, except that the weight part of castor oil in the prepolymer A terminated with OH groups in step (1) was changed to 36 parts by weight, and 10.5 parts by weight of polyethylene glycol was added. Butylene glycol diol, the isocyanate monomer is replaced by 5 parts by weight of isophorone diisocyanate (IPDI), the functional resin is replaced by 3 parts by weight of silane coupling agent, 20 parts by weight of tetrafluorofluorocarbon Resin and the trifluorofluorocarbon resin of 17 weight parts, the weight part of catalyzer becomes 0.05, and chain extender is replaced by the methyl propylene glycol of 7.5 weight parts, and cross-linking agent is replaced by the tetraethylene pentamine of 1 weight part, and reaction obtains shallow Yellow, good fluidity, transparent viscous liquid; and the obtained OH group-terminated prepolymer A and NCO group-terminated prepolymer B are mixed and stirred according to R=1.3.

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PUM

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Abstract

The invention discloses a preparation method of an adhesive. The preparation method of the adhesive comprises the following steps: (1) preparing an OH radical blocked prepolymer A: carrying out a vacuum dehydration reaction on a hydroxyl monomer and functional resin at 90-100 DEG C, adjusting the reaction temperature to 60-85 DEG C, adding an isocyanate monomer and a catalyst, and carrying out a reaction for 1-3 hours, cooling, and adding a chain extender and a crosslinking agent; (2) preparing an NCO radical block prepolymer B: carrying out a vacuum dehydration reaction on a hydroxyl monomer and functional resin at 90-100 DEG C, adjusting the reaction temperature to 60-85 DEG C, adding an isocyanate monomer and a catalyst, and carrying out a reaction for 1-3 hours; and (3) carrying out a crosslinking reaction: mixing the prepared OH radical blocked prepolymer A and the NCO radical block prepolymer B in a proportion of an R value, wherein the R value refers to the molar ratio of isocyanate radicals to hydroxyl and is ranged from 1.0 to 1.3.

Description

technical field [0001] The invention belongs to the technical field of adhesives, and in particular relates to a method for preparing a green and environment-friendly composite polymer adhesive for permeable bricks or permeable pavements. Background technique [0002] Permeable brick (permeable pavement) is a functional decorative material used for prefabricated block paving or on-site paving. It has a certain degree of air permeability and water permeability, which can slow down the urban "heat island effect", balance the urban ecosystem, reduce Dryness and heat, dust reduction and noise reduction, flood detention and rain storage, conservation of rain, and increased comfort of urban living are inevitable trends in ecological city reconstruction and sustainable urban development. At present, the permeable bricks seen on the market can be divided into two categories: non-ceramic permeable bricks and ceramic permeable bricks in terms of materials and production processes. Ce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J175/06C08G18/67C08G18/42C08G18/12C08G18/30
Inventor 杜郢王海青刘海宁陈毅然陈劲然
Owner 刘海宁