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Biological aqueous polyurethane resin, preparation method therefor and application of biological aqueous polyurethane resin

A water-based polyurethane and bio-based technology, applied in the field of polyurethane resin synthesis, can solve the problems of insufficient folding resistance, wear resistance, solvent resistance, ie DOP resistance, mechanical properties, storage performance and constant temperature and humidity performance, and achieve constant temperature Improved constant humidity performance, improved storage performance, and the effect of avoiding environmental pollution

Inactive Publication Date: 2019-12-03
HEFEI KETIAN WATERBORNE TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current bio-based waterborne polyurethane resins still have insufficient performance such as folding resistance, wear resistance, solvent resistance (DOP resistance), mechanical properties, storage performance and constant temperature and humidity performance.

Method used

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  • Biological aqueous polyurethane resin, preparation method therefor and application of biological aqueous polyurethane resin
  • Biological aqueous polyurethane resin, preparation method therefor and application of biological aqueous polyurethane resin
  • Biological aqueous polyurethane resin, preparation method therefor and application of biological aqueous polyurethane resin

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preparation example Construction

[0024] Such as figure 1 Shown, provide a kind of preparation method of bio-based water-based polyurethane resin, at least comprise the following steps,

[0025] S1, graphene oxide is formulated into graphene oxide solution;

[0026] S2. Mix and stir the graphene oxide solution, bio-based macromolecular polyol, bio-based isocyanate, carboxylic acid type hydrophilic chain extender and small molecule polyol chain extender to obtain a water-based polyurethane prepolymer;

[0027] S3. Mix the water-based polyurethane prepolymer, neutralizer, deionized water and small molecular amine post-chain extender under stirring state to obtain the bio-based water-based polyurethane resin.

[0028] Specifically, in step S1, 0.02-0.2 parts by mass of graphene oxide is prepared into a graphene oxide solution. For example, 0.02-0.2 mass parts of graphene oxide is prepared into a graphene oxide solution with N-methylpyrrolidone, wherein the graphene oxide is graphene oxide containing hydroxyl an...

Embodiment 1

[0034] A preparation method of bio-based water-based polyurethane resin, comprising the following steps:

[0035] Weigh 75-80g of castor oil derivative polyol (relative molecular mass is 1000), put it into the reactor, add 20-25g of dimer acid diisocyanate under stirring state, keep the temperature at 80-90°C, stir for 2-3 Hour. Add 0.05-1 g of the prepared graphene oxide solution (0.02-0.04 g of graphene oxide), the graphene oxide solution is prepared from, for example, N-methylpyrrolidone, keep the temperature at 80-90° C., and stir for 2-3 hours. Cool down to 65-66°C, add 2.5-3g dimethylolpropionic acid (DMPA), 3-4g trimethylolpropane, raise the temperature to 70-71°C, and keep stirring at 70-71°C for 2-3 hours to obtain Bio-based waterborne polyurethane prepolymer.

[0036] Cool the water-based polyurethane prepolymer to 5-8°C, add 1-1.5g triethylamine, stir for 10-15 minutes, then transfer to a high-speed emulsifier, add 200g-220g at a speed of 1400-1600 rpm Deionized wa...

Embodiment 2

[0039] A preparation method of bio-based water-based polyurethane resin, comprising the following steps:

[0040] Weigh 95-100g of castor oil (relative molecular mass: 1000), put it into a reactor, add 15-18g of dimer acid diisocyanate under stirring, keep the temperature at 80-90°C, and stir for 2-3 hours. Add 0.05-1 g of the prepared graphene oxide solution (0.02-0.04 g of graphene oxide), the graphene oxide solution is prepared from, for example, N-methylpyrrolidone, keep the temperature at 80-90° C., and stir for 2-3 hours. Cool down to 65-66°C, add 3-4g dimethylolpropionic acid (DMPA), 7-8g trimethylolpropane, raise the temperature to 70-71°C, and keep stirring at 70-71°C for 2-3 hours to obtain Bio-based waterborne polyurethane prepolymer.

[0041] Cool the water-based polyurethane prepolymer to 5-8°C, add 1-1.5g triethylamine, stir for 10-15 minutes, then transfer to a high-speed emulsifier, add 200g-220g at a speed of 1400-1600 rpm Deionized water, after 1-3 minutes,...

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Abstract

The invention discloses biological aqueous polyurethane resin, a preparation method therefor and an application of the biological aqueous polyurethane resin. The biological aqueous polyurethane resinat least comprises the following ingredients in parts by mass: 70-100 parts of biological macromolecular polyol, 15-30 parts of biological isocyanate, 0.02-0.2 part of graphene oxide. According to thebiological aqueous polyurethane resin, the preparation method therefor and the application of the biological aqueous polyurethane resin, properties such as folding endurance, wear resistance and mechanical properties of the biological aqueous polyurethane resin can be improved.

Description

technical field [0001] The invention belongs to the technical field of polyurethane resin synthesis, and in particular relates to a bio-based waterborne polyurethane resin and a preparation method and application thereof. Background technique [0002] Most of bio-based macromolecular polyols and bio-based isocyanates are derived from vegetable oil series, which are rich in resources, cheap, and easy to obtain raw materials; bio-based waterborne polyurethane resins are degradable and environmentally friendly, in line with the current concept of green environmental protection The development of bio-based water-based polyurethane resin can use less or even no petroleum-based polyols, and the use of vegetable oil-based polyols can not only save excessive use of energy, but also promote the development of agriculture. Therefore, bio-based water-based polyurethane resins development is of great significance. However, the current bio-based waterborne polyurethane resin still has t...

Claims

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Application Information

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IPC IPC(8): C08G18/36C08G18/12C08G18/32C08G18/34C08K3/04
CPCC08G18/12C08G18/3206C08G18/34C08G18/348C08G18/36C08K3/042C08G18/3228
Inventor 李维虎王启东戴家兵黄星郭文鹤朱保凌
Owner HEFEI KETIAN WATERBORNE TECH CO LTD
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