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推薦各型號(hào)氣相二氧化硅在液體樹(shù)脂中應(yīng)用

日期：2025-04-17 16:39
瀏覽次數(shù)：826
摘要： 產(chǎn)品推薦 Recommended products for thickening and thixotropy in liquid resins Unsaturated polyester resins are relatively non polar, as in most cases the reactive diluent styrene is used. For this reason, hydrophilic AEROSIL® fumed silica is the thickening agent of choice. AEROSIL® 200 is widely used for laminating resins and gel coats. Nowadays the more efficient product AEROSIL® 200 HV is recommended. Some specialty po...

產(chǎn)品推薦

Recommended products for thickening and thixotropy in liquid resins

Unsaturated polyester resins are relatively non polar, as in most cases the reactive diluent styrene is used. For this reason, hydrophilic AEROSIL® fumed silica is the thickening agent of choice. AEROSIL® 200 is widely used for laminating resins and gel coats. Nowadays the more efficient product AEROSIL® 200 HV is recommended.

Some specialty polyester resins and vinyl ester resins, which have more polar character, require hydrophobic AEROSIL® products. AEROSIL® R 202 performs excellent in such formulation, while hydrophilic AEROSIL® fumed silica will not give sufficient thickening efficiency.

The following table shows the typical applications and effects for the use of AEROSIL® and SIPERNAT® products in UP resins and gives recommendations for grades and dosage.

Gel coat
Application Effect Product Dosage
[wt.%] 		Remark
Clear Rheology AEROSIL® 200 / 
AEROSIL® 200 HV 		1.0-2.0  
Filled/ colored
w/talc, TiO2 etc. 		Rheology
Porosity 		AEROSIL® 200 / 
AEROSIL® 200 HV 
SIPERNAT® 22 LS 		2.5-4.5 Ratio 40 percent
(AEROSIL® 200) with 60 percent (SIPERNAT® 22 LS) to start. Similar usage in putties and pastes
Dark colored
non-white 		Rheology
Blush Resistance 		AEROSIL® 200 / 
AEROSIL® 200 HV 
SIPERNAT® FPS-5 		2.5-4.5 For marine gel coat 
High purity ppt. silica
General Rheology control 
Mechanical properties 		AEROSIL® R 202, AEROSIL® R 208 6.0-10.0 In most cases based on VE and EP resin. When UP resin is used AEROSIL® 200 HV is recommended

 

Laminating resin
Application Effect Product Dosage
[wt.%] 		Remark
General Rheology control AEROSIL® 200 / 
AEROSIL® 200 HV 		0.8-1.3  
Low styrene Rheology control AEROSIL® 200 / 
AEROSIL® 200 HV 
SIPERNAT® 22 LS 		0.8-2.5 For environmental resins 
Rising viscosity with less solvent
General Rheology control 
Mechanical properties 		AEROSIL® R 202, AEROSIL® R 208 6.0-10.0 In most cases based on VE and EP resin. When UP resin is used AEROSIL® 200 HV is recommended

 

Bonding paste
Application Effect Product Dosage
[wt.%] 		Remark
General Rheology control
Mechanical properties 		AEROSIL® R 202, AEROSIL® R 208 6.0-10.0 In most cases based on VE and EP resin. When UP resin is used AEROSIL® 200 HV is recommended

The data represents typical values

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