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Polyaminoester /molecular sieve composite material and its preparation method

A composite material and molecular sieve technology, applied in the field of polyurethane/molecular sieve composite materials and their preparation, can solve problems such as insufficient physical properties, and achieve the effects of improving mechanical properties, heat resistance and solvent resistance, and bonding force.

Inactive Publication Date: 2004-11-17
TAIYUAN UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is intended to solve the insufficient physical properties of existing polyurethane materials, especially to improve the mechanical properties and solvent resistance of polyurethane elastomers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0027] Molecular sieve surface modification: first select 100 grams of 10X molecular sieves with a pH of 6 to 8 (suspended in water, the same below) and an average particle size of 3.3 microns, add 2000 grams of deionized water, and add 0.5 grams of surfactant dodecyl Sodium sulfate, after stirring at high speed for 1 hour, add 0.5 g (2.5% of molecular sieve weight) gamma-glycidyloxypropyl trimethoxysilane coupling agent at 60-80 ° C, stir for 4 hours, filter out molecular sieve, 110 After vacuum drying at ℃, pulverize and seal for later use.

[0028] Weigh 100 grams of polyethylene adipate diol with a molecular weight of 2000, 8 grams of surface-modified molecular sieves, melt and mix evenly at 80 ° C, add 2.6 grams of ethylene glycol, 5.5 grams of triethanolamine, and phthalic acid 10 grams of dibutyl ester (all reagents are dehydrated in advance, the water content is less than 0.5%), stirred at 50°C for 4 hours, added 26.9 grams of TDI, 0.1 grams of dibutyltin dilaurate cat...

Embodiment approach 2

[0031]Molecular sieve treatment. The HY-type molecular sieve with an average particle size of 5.1 microns is selected, and the treatment process is the same as that of Embodiment 1.

[0032] Take by weighing 100 grams of polyethylene adipate glycol with a molecular weight of 2000 (moisture content is less than 0.5%), 9 grams of surface-modified molecular sieves, after melting and mixing at 80 ° C, add 2.6 grams of butanediol, three 5.5 grams of ethanolamine, 10 grams of dibutyl phthalate (all reagents were dehydrated in advance), stirred at 50°C for 2 hours, added 26.9 grams of TDI, 0.1 grams of dibutyltin dilaurate catalyst, stirred quickly and evenly, and defoamed for 10 minutes , poured into the mold, and vulcanized at 100°C for 24 hours.

[0033] Test performance: hardness (Shore A) 51, tensile strength 22Mpa, tear strength 40KN / m, swelling property of cyclohexanone (weight gain %) ΔW=93% (18°C×24 hours).

Embodiment approach 3

[0035] Select MCM-41 type molecular sieve, the particle size is 8.2 microns, the pH is 6-8, and the treatment process is as in Embodiment 1. Choose 100 grams of polyethylene adipate diol with a molecular weight of 2000 (moisture content is less than 0.5%), 15 grams of surface-modified molecular sieves, after melting and mixing at 80 ° C, add 2.6 grams of butanediol, triethanolamine 5.6 grams, 20 grams of dibutyl phthalate (all reagents were dehydrated in advance), stirred at 50°C for 10 hours, added 26.9 grams of TDI, 0.1 grams of dibutyltin dilaurate catalyst, stirred quickly and evenly, degassed for 5 minutes, Pour it into a mold and vulcanize at 100°C for 24 hours.

[0036] Test performance. Hardness (Shore A) 48, tensile strength 20.6Mpa, tear strength 36KN / m. Swellability of cyclohexanone (weight gain %) ΔW=85.75% (18°C×24 hours).

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Abstract

The invention relates to a polyurethane and inorganic porous granule composite material and method for preparation comprising the steps of, carrying out surface organic modifying treatment to the molecular screen whose grain diameter is 0.05-40 um and bore diameter is 0.3-3nm, mixing homogeneously with polyesters or polyethers polyhydric alcohol by the stirring with mechanical force, performing fabrication with polyisocyanates, chain expanded cross linking agent and auxiliary agent through the conventional polyurethane synthesizing process by one-step method or pre-aggressiveness, the mechanic property and solvent resistance of the obtained composite material are improved substantially.

Description

technical field [0001] The invention discloses a polyurethane / molecular sieve composite material and a preparation method thereof. It belongs to the research field of polymer materials, and specifically relates to composite materials of polyurethane and inorganic porous particles and a preparation method thereof. technical background [0002] Polyurethane is a polymer material between plastic and rubber. It has a wide range of hardness, high strength, wear resistance, oil resistance, etc., especially a wide range of formula adjustment, and has been widely used in various aspects of the national economy. However, the heat resistance and polar solvent resistance of polyurethane are poor, and its use is limited to a certain extent. In recent years, the research on the preparation of polyurethane nanocomposites with nano-inorganic particles or organic montmorillonite as filling materials is very active, and there have been a large number of related reports. However, the applic...

Claims

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Application Information

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IPC IPC(8): C08K9/06C08L75/04
Inventor 吕志平杨茹果贾林才白少敏赵廷午窦涛
Owner TAIYUAN UNIV OF TECH
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