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Municipal solid waste incineration bottom ash modified polyurethane-epoxy resin interpenetrating polymer network composite material and preparation method thereof

A technology for incineration of domestic waste and interpenetrating polymers is applied in the field of interpenetrating polymer network materials and their preparation, which can solve the problems of brittleness and poor impact performance of cured products, and achieve the improvement of mechanical properties and thermal stability, and the price is excellent and cheap. , good stability

Active Publication Date: 2019-01-11
合肥九州龙腾科技成果转化有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Epoxy resin has excellent physical and chemical properties, and its cured product has good mechanical properties, low curing shrinkage, and good processing performance, but the disadvantage is that the cured product is brittle and has poor impact performance.

Method used

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  • Municipal solid waste incineration bottom ash modified polyurethane-epoxy resin interpenetrating polymer network composite material and preparation method thereof
  • Municipal solid waste incineration bottom ash modified polyurethane-epoxy resin interpenetrating polymer network composite material and preparation method thereof
  • Municipal solid waste incineration bottom ash modified polyurethane-epoxy resin interpenetrating polymer network composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]Step 1: Weigh 0.15 kg of weathered municipal solid waste incineration bottom ash, mix it with 300 mL of distilled water, ultrasonicate for 1 h (with a power of 250 W), filter, and dry for 12 h. Then the bottom ash was ball-milled until the particle size was less than 200 mesh, and the washed bottom ash was obtained; 0.1 kg of the washed bottom ash was weighed, mixed with 1000 mL of 1 mol / L hydrochloric acid, and ultrasonicated for 90 minutes at room temperature (power 250W). After acid activation, wash with water until neutral, then wash with acetone, dry the filter cake in vacuum at 120°C for 12 hours, and grind to obtain the pickled bottom ash; weigh 50g of the pickled bottom ash, and mix with 100g of isophorone Diisocyanate, 25g tetrahydrofuran, reflux at 70-80°C for 3-4 hours, filter, vacuum-dry the filter cake at 120°C for 12 hours, and grind to obtain the bottom ash modified by isophorone diisocyanate.

[0031] Step 2: Take 1.01 g of the bottom ash modified by isop...

Embodiment 2

[0036] Step 1: prepare the bottom ash after isophorone diisocyanate modification with reference to the method of embodiment 1;

[0037] Step 2: Take 5.1 g of bottom ash modified with isophorone diisocyanate, mix it with tetrahydrofuran at a mass ratio of 1:3, and ultrasonicate at room temperature for 1 hour (power 250W) to obtain a bottom ash suspension.

[0038] Step 3: Take 65.09g of castor oil and 9.91g of isophorone diisocyanate, mix them, and stir at 90°C for 1 hour to form a polyurethane prepolymer based on castor oil.

[0039] Step 4: After the prepolymer is cooled to room temperature, mix it with 132.58g epoxy resin, add the bottom ash suspension to the polyurethane-epoxy resin mixture, stir for 2-3 hours with a magnet, and remove tetrahydrofuran at 70°C. Then add 42.42g of curing agent D230, stir, ultrasonic for 30min (power is 250W), vacuum defoaming, curing at 90°C for 2h, curing at 110°C for 3h, to obtain municipal solid waste incineration bottom ash modified polyu...

Embodiment 3

[0042] Step 1: prepare the bottom ash after isophorone diisocyanate modification with reference to the method of embodiment 1;

[0043] Step 2: Take 9.28g of the bottom ash modified by isophorone diisocyanate, mix it with tetrahydrofuran at a mass ratio of 1:3, and ultrasonicate at room temperature for 1 hour (with a power of 250W) to obtain a bottom ash suspension.

[0044] Step 3: Mix 78.1 g of castor oil with 11.9 g of isophorone diisocyanate, and stir at 90° C. for 1 hour to form a polyurethane prepolymer based on castor oil.

[0045] Step 4: After the prepolymer is cooled to room temperature, mix it with 159.09g of epoxy resin, add the bottom ash suspension to the polyurethane-epoxy resin mixture, stir for 2-3 hours with a magnet, and remove tetrahydrofuran at 70°C. Then add 50.91g of curing agent D230, stir, ultrasonic for 30min (power is 250W), vacuum defoaming, curing at 90°C for 2h, curing at 110°C for 3h, to obtain municipal solid waste incineration bottom ash modifi...

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Abstract

The invention discloses a municipal solid waste incineration bottom ash modified polyurethane-epoxy resin interpenetrating polymer network composite material and a preparation method thereof. According to the composite material, a polyurethane-epoxy resin interpenetrating polymer network is taken as a matrix, and diisocyanate modified bottom ash is taken as a reinforcing filler, so that the mechanical property and heat stability of the composite material are effectively improved. The preparation method comprises the following steps: 1) washing and acidifying municipal solid waste incinerationbottom ash, and preparing the diisocyanate modified bottom ash; 2) preparing suspension of the diisocyanate modified bottom ash; 3) mixing vegetable oil based polyhydric with and diisocyanate, and then carrying out a prepolymerization reaction to obtain a polyurethane prepolymer; and 4) adding epoxy resins and suspension of the diisocyanate modified bottom ash into the polyurethane prepolymer, mixing to remove a solvent, adding a curing agent for stirring, removing bubbles, and curing, thereby obtaining the municipal solid waste incineration bottom ash modified polyurethane-epoxy resin interpenetrating polymer network composite material with excellent mechanical property and thermal property.

Description

technical field [0001] The invention relates to an interpenetrating polymer network material and a preparation method thereof, in particular to a domestic waste incineration bottom ash modified polyurethane-epoxy resin interpenetrating polymer network composite material and a preparation method thereof. Background technique [0002] Municipal solid waste incineration treatment is currently widely used worldwide. It is a very effective waste management method because it can not only reduce the volume and quality of waste, effectively inactivate pathogens, but also recover heat energy to generate electricity. However, air pollutants and ash can also be produced at the same time. Among them, two main types of solid waste, bottom ash and fly ash, are produced, of which bottom ash accounts for 80% to 90% of the total amount. After natural weathering, it is classified as non-hazardous waste, so the bottom ash can be directly landfilled or reused. [0003] Incineration bottom ash ...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L75/14C08G18/36C08G18/58C08K9/04C08K11/00
CPCC08G18/36C08G18/58C08L63/00C08L2205/04C08L75/14C08K9/04C08K11/005
Inventor 许宁陈介民王成双岳鹿张文惠侯贵华沈超浦旭清王佳磊谢宇
Owner 合肥九州龙腾科技成果转化有限公司
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