Spray-free TPU composition with special aesthetic effect and its preparation method and application

A special effect powder, spray-free technology, applied in the field of polymer materials, can solve the problems of uneven distribution of special effect powder, unstable flow rate, flow marks and weld lines, etc., to improve the market application range and improve shear resistance. , Reduce the effect of welding lines

Active Publication Date: 2017-12-01
TIANJIN KINGFA NEW MATERIAL
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

By dispersing the special effect powder into the matrix resin, the special effect powder is connected to each other to form a continuous special effect film, which covers the base material and presents a special effect texture, although the special effect powder is directly added to the resin base. , can achieve a special glossy effect, but the compatibility between the matrix resin and the special effect powder is poor. Under the strong pressure and strong shear conditions of extrusion or injection molding, it is difficult for the special effect powder and the matrix resin material to achieve the same fluidity, especially It is a product with a complex structure. The special effect powder oriented along the flow direction occurs and the melt flow turns, the flow velocity is unstable, and the melt merges, etc., causing the special effect powder to be unevenly distributed in the melt and easy to form on the surface of the product. Defects such as flow marks and weld lines seriously prevent and limit the market promotion and application of this type of spray-free material

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
  • Spray-free TPU composition with special aesthetic effect and its preparation method and application
  • Spray-free TPU composition with special aesthetic effect and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-6

[0042] Example 1-6 Preparation of polymer-coated special effect powder microspheres:

[0043] According to the formula in Table 1, firstly, add anti-oxidation and corrosion inhibitor to the water-based polymer dispersion at room temperature, stir and disperse for 15 minutes to obtain a dispersion; while stirring, slowly add special effect powder, or water-based Special effect powder slurry, then add curing agent while stirring, and continue to stir for 30-120 minutes, so that the special effect powder is fully dispersed and covered by the dispersion liquid, and finally a composite dispersion liquid of polymer-coated special effect powder is obtained; The composite dispersion liquid is spray-dried to obtain polymer-coated special-effect powder microspheres. The temperature of the air inlet during the spray-drying process is 150-300° C., and the temperature of the air outlet is 50-130° C.

Embodiment 1

[0046] In Example 1: the water-based polymer dispersion is a polyurethane emulsion, and its solid content is 10wt%; the metal powder is a surface-treated flake aluminum powder, and the content of the Al element in the aluminum powder is 60wt%, containing Zn and Sn at the same time; The particle size is 100μm; the anti-oxidation and corrosion inhibitor is pyrogallic acid; the curing agent is polyisocyanate.

Embodiment 2

[0047] In Example 2: the water-based polymer dispersion is a polyurethane-acrylate emulsion, and its solid content is 60wt%; the metal powder is a surface-treated flake copper powder, and the content of Cu element in the copper powder is 70wt%, containing Zn and Sn; the particle size is 5 μm; the anti-oxidant corrosion inhibitor is benzotriazole; the curing agent is polycarbodiimide.

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
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a spray-free TPU composition with special aesthetic effects and its preparation method and application, comprising the following components: TPU resin 70-98wt%; polymer-coated special effect powder microspheres 1-25wt%; Compatibility agent 0-10wt%; Antioxidant 0.1-1wt%; Processing aid 0.1-0.5wt%; The present invention is dispersed in TPU resin by coating the special effect powder with water-based polymer dispersion into microspheres, It can significantly improve the compatibility of special effect powder and TPU resin, eliminate the flow mark formed on the surface of the product during extrusion or injection molding, and reduce the weld line. The prepared spray-free TPU composition has a more obvious metallic texture and pearlescent sparkle And other special aesthetic effects, greatly improving the market application range of spray-free materials.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a spray-free TPU composition with special aesthetic effects, a preparation method and application thereof. Background technique [0002] As people pay more and more attention to environmental issues, spray-free special effect material products are gradually showing their competitiveness. Spray-free aesthetic resins can replicate the bright and colorful hues produced by spray paint, as well as pearlescent, flashing effects, metallic luster and Texture and other special effects, so as to meet diversified and differentiated customer needs, and can truly achieve energy saving and emission reduction in the production process, and can be widely used in handicrafts, toys, home appliances, automobiles, electronic products, sporting goods and office supplies and other fields . [0003] At present, the more common preparation method of spray-free resin is to add metal powder, ...

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 Patents(China)
IPC IPC(8): C08L75/04C08K9/10
Inventor 胡纲陈平绪叶南飚王大中宁方林孙雅杰高权星
Owner TIANJIN KINGFA NEW MATERIAL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap