Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Cellulose nano-whisker (CNW) compounded bi-component terpenyl waterborne polyurethane and preparation method and use thereof

A technology of terpene-based water-based and water-based polyurethane, which is applied in cellulose adhesives, cellulose coatings, polyurea/polyurethane coatings, etc., to achieve the effects of simple manufacturing methods, improved performance, and enhanced interaction

Inactive Publication Date: 2014-01-29
INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
View PDF2 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, it has been reported in the literature that CNW is used to compound a one-component water-based resin system, and its film-forming process only involves the physical film-forming process.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cellulose nano-whisker (CNW) compounded bi-component terpenyl waterborne polyurethane and preparation method and use thereof
  • Cellulose nano-whisker (CNW) compounded bi-component terpenyl waterborne polyurethane and preparation method and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: The amount of CNW added is 0.5% of the quality of the two-component terpene-based waterborne polyurethane solid resin

[0030] Add 1.65g of CNW aqueous suspension (mass percentage concentration 3%) to 15.00g terpene-based epoxy resin polyol aqueous dispersion (solid content 35%wt), stir evenly, then add 5.85g water-based isocyanate crosslinking agent, Mix evenly, add 7.12g of water to dilute, then paint film on polytetrafluoroethylene board, leave it at room temperature for 2 days, then bake in 100°C oven for 1 hour, and measure the performance of the paint film. The tensile modulus of the composite product is 20.26MPa, the tensile strength is 13.12MPa, the storage modulus is 1.36MPa (150°C), and the loss modulus is 34.12KPa (150°C).

Embodiment 2

[0031] Embodiment 2: The amount of CNW added is 1% of the quality of the two-component terpene-based waterborne polyurethane solid resin

[0032] Add 1.77g of CNW aqueous suspension (mass percentage concentration 3%) to 8.00g terpene-based epoxy resin polyol aqueous dispersion (solid content 35wt%), ultrasonic 20min, then add 3.12g water-based isocyanate crosslinking agent, mix Evenly, after adding 2.92g of water to dilute, coat the film on a polytetrafluoroethylene board, place it at room temperature for 2 days, then bake it in an oven at 100°C for 1 hour, and measure the performance of the paint film. The composite product has a tensile modulus of 25.55MPa, a tensile strength of 13.77MPa, a storage modulus of 1.57MPa (150°C), and a loss modulus of 42.57KPa (150°C).

Embodiment 3

[0033]Embodiment 3: The amount of CNW added is 2% of the quality of the two-component terpene-based waterborne polyurethane solid resin

[0034] Add 3.53g of CNW water suspension (mass percentage concentration 3%) to 8.00g terpene-based epoxy resin polyol aqueous dispersion (solid content 35wt%), stir evenly, then add 3.12g water-based isocyanate crosslinking agent, mix Evenly, after adding 1.15g of water to dilute, coat the film in a polytetrafluoroethylene template, place it at room temperature for 2 days, then bake it in an oven at 100°C for 1 hour, and measure the performance of the paint film. The tensile modulus of the composite product is 34.33MPa, the tensile strength is 14.95MPa, the storage modulus is 2.38MPa (150°C), and the loss modulus is 75.13KPa (150°C).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
storage modulusaaaaaaaaaa
loss modulusaaaaaaaaaa
Login to View More

Abstract

The invention discloses cellulose nano-whisker (CNW) compounded bi-component terpenyl waterborne polyurethane and a preparation method and use thereof. According to the preparation method, a CNW aqueous suspension is directly added into a terpenyl polyol aqueous dispersion by stirring and ultrasonic vibration methods and then is crosslinked with polyisocyanate, thereby obtaining a CNW compounded bi-component waterborne polyurethane system. The compounded system is applied to the preparation of waterborne polyurethane coatings, adhesives and polymer materials. The preparation method of the compounded system is simple and convenient, and CNWs can be uniformly and steadily dispersed into the polyol aqueous dispersion without surface modification and drying. Active hydroxyl of the surfaces of the CNWs is subjected to chemical and physical compounding with thermosetting matrix resin, so that the interaction between the CNWs and resin matrix interfaces is enhanced, and the properties of composite materials can be effectively improved.

Description

technical field [0001] The invention relates to a cellulose nano-whisker (CNW) composite two-component waterborne terpene-based polyurethane, a preparation method and application thereof. Background technique [0002] With the improvement of global environmental protection awareness and the improvement of environmental regulations, the emission of volatile organic compounds (VOC) in traditional solvent-based coatings has become more and more strictly restricted. Water-based coatings use water as the dispersion medium, and have the advantages of being non-flammable, non-toxic, non-polluting, and energy-saving. Two-component waterborne polyurethane coatings combine the high performance of two-component solvent-based polyurethane coatings with the low VOC content of waterborne coatings, and have become a hot spot in coating research at home and abroad. The two-component water-based polyurethane coating is composed of a water-based polyol component containing -OH groups and a l...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/79C08G18/67C08L75/14C08L1/02C09D175/14C09D101/02C09J175/14C09J101/02
CPCC08G18/4081C08G18/58C08G18/6484C08G18/792C09D175/04C09J175/04
Inventor 孔振武吴国民陈健霍淑平刘贵锋
Owner INST OF CHEM IND OF FOREST PROD CHINESE ACAD OF FORESTRY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com