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Effects of Water, Alcohols Impurities Tmp and Huimdity in Polyaspartic Flooring Formulation

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Effects of Water, Alcohols Impurities Tmp and Huimdity in Polyaspartic Flooring Formulation

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Product Details:

Place of Origin: Zhuhai, China
Brand Name: Feiyang Novel Materials
Certification: ISO 14001-2004, ISO 19001-2000

Payment & Shipping Terms:

Minimum Order Quantity: 200KG
Packaging Details: 20KG/Drum
Delivery Time: 7 days after getting order
Payment Terms: T/T or LC
Supply Ability: 2000Ton
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Detailed Product Description

Effects of Water, Alcohols Impurities in Polyaspartic Flooring Formulation

 

The influence of water and small molecular alcohols on the reaction rate is remarkable

 

 

A Solvent water content and purity

B Powder water content

C Dilute solvents for additives such as leveling agent, defoaming agent, etc.

 

  • Water and impurities in the solvent reacts with NCO

Like all isocyanates, NCO reacts with water. Therefore it is necessary to use solvent with a water content below 500ppm (preferably below 300ppm), which is called “polyurethane grade solvent".

 

We also recommend to check impurities in the solvent carefully that may react with the NCO group, such as butanol and acetic acid in ethyl ester.

 

R-NCO + H2O → Slow R-NHCOOH → Quick R-NH2 + CO2

R-NH2 + R-NCO → Quick R-NHCONH-R

R-NCO +R, R,,NH → R-NHCON- R, R,,

 

Improve Method:

  • Strictly controlling raw material water content and polyurethane grade is required.
  • Avoid the use of additives that containing hydroxyl and amino ingredients.
  • Adding water absorbing substances such as molecular sieves, imines and ketones to treat trace moisture in the system.
  • Effects of circumstance humidity and temperature on reaction rate
  • Effect of humidity on reaction rate
  •  

The influence of polyaspartic resin on the environmental humidity is smaller than polyurethane. It is not easy to blister. The humidity is larger and the touch drying speed is obviously accelerated, but the operation time is not affected.

 

  • Effect of temperature on reaction rate
  •  

As with other materials, the higher the temperature, the faster the reaction, but it’s not so obvious impact of epoxy, the weakness is not easy to adjust.

 

    Temperature vs potlife 

Effects of Water, Alcohols Impurities Tmp and Huimdity in Polyaspartic Flooring Formulation

 

www.polyaspartic-polyurea.com
www.feiyangpaint.com
Contact: Ms Annie Qing 
Mail: export@feiyang.com.cn
Tel: +86 75536694812 
 

Contact Details
Shenzhen Feiyang Protech Corp., Ltd.

Contact Person: Ms. Annie Qing

Tel: 86-755-36694812

Fax: 86-755-33856111

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