Unlock instant, AI-driven research and patent intelligence for your innovation.

Core-shell particle, manufacturing method and application thereof

A particle, core-shell technology, applied in coatings and other directions, can solve the problems of poor compatibility, unsustainable storage stability for a long time, easy sedimentation, etc., and achieve the effects of excellent extinction effect, good extinction ability and simple manufacturing method.

Active Publication Date: 2018-01-19
长兴材料工业(广东)有限公司
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, a problem associated with using silica particles as a matting agent is that the density of silica particles can be as high as 2.2 g / cm 3 , so the silica particles are easy to settle in the emulsion
This makes storage stability unmaintainable for long periods of time
In addition, the compatibility between inorganic silica particles and organic resin binders is poor

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
  • Core-shell particle, manufacturing method and application thereof
  • Core-shell particle, manufacturing method and application thereof
  • Core-shell particle, manufacturing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0079] Example 1: Preparation of matting composition

[0080] 1. Formation of vinyl polymer core via soap-free emulsion polymerization

[0081] 200 g of deionized water and a total weight of 20 g of styrene (Acros Organics, 99% purity) and butyl acrylate (Acros Organics, 99% purity) were added to the reactor. The weight ratio of styrene to butyl acrylate is reported in Table 1 for each sample. With stirring at 300 rpm, the mixture was degassed under nitrogen atmosphere for 30 minutes and then heated to 75° C., followed by the addition of 1 g of potassium persulfate dissolved in 20 g of deionized water. The mixture was maintained at 75°C for 4 hours, resulting in a (P(St-BA)) copolymer core at 60% to 70% conversion.

[0082] 2. Shell formation via sol-gel reaction

[0083] P(St-BA) was copolymerized via addition of triethoxyvinylsilane (silane coupling agent; Acros Organics, 97% purity) and 1.6 g of styrene (15.2 mmol; Acros Organics, 99% purity) dissolved in 40 g methanol ...

example 2

[0091] Example 2: Analysis of matting effect

[0092] The matting composition was coated onto a glass substrate and a film was formed on the glass substrate by using a 1 / 4" x 16" wire wound rod (RD Specialties). The glass substrate and film were heated in an oven at 50°C for 3 days to dry and remove DPnB from the film. According to ASTM D523, the 60° gloss of the film was measured by Novo-Gloss 60° gloss meter to evaluate the matting effect of the matting composition. The results are recorded in Table 1 (60° gloss: ◎10 to 40; ○41 to 70; Δ71 to 90; >90).

[0093] Table 1

[0094]

[0095] 1 Based on the total weight of core-shell particles (taking sample 1 as an example, the total weight of core-shell particles is: 20 / (100%-12%-14%)=27.03g)

[0096] 2 F-silane: 1H, 1H, 2H, 2H perfluorooctyltriethoxysilane

[0097] 3 18-Silane: Trimethoxy(octadecyl)silane (ODS-silane)

[0098] 4 8-Silane: Trimethoxy(octyl)silane (OTS-silane)

[0099] 5 3-Silane: Trimethoxy(propyl...

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
Tgaaaaaaaaaa
Login to View More

Abstract

The invention relates to a core-shell particle, a manufacturing method and application thereof. The core of the core-shell particle includes a vinyl polymer. The shell of the core-shell particle includes hydrophobic silane bonded to the core surface through a silane coupling agent. The core-shell particle provided by the invention is suitable for dulling materials and can be used as a dulling agent.

Description

【Technical field】 [0001] The present invention relates to core-shell particles and methods for their manufacture. The present invention also relates to matting compositions comprising core-shell particles as matting agents. 【Background technique】 [0002] As living standards improve, consumers have come to prefer matte surfaces over glossy surfaces in many everyday applications such as furniture, or interiors of buildings or vehicles. High gloss surfaces reflect most of the light and therefore cause damage to the observer's eyes. Conversely, low-gloss or matte surfaces have anti-reflective properties that reflect less light and therefore reduce such damage. Also, scratches on low-gloss or matte surfaces are less noticeable due to their anti-reflective properties. Therefore, matting agents can be expected to witness rapid market growth owing to rising consumer demand. [0003] Gloss is known to be related to the smoothness of an object's surface. Thus, one way to reduce ...

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
IPC IPC(8): C08F257/02C08F265/04C08F230/08C08F212/08C08F220/18C09D7/65
Inventor 苏郁蕙萧裕霖邱文英戴子安杨振汉周柏廷
Owner 长兴材料工业(广东)有限公司