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Feiyang Novel Materials Corporation Limited Polyaspartic Ester Resin
Leading Polyaspartic Polyurea Materials Researcher and Manufacturer in China
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Spraying Polyaspartic Weather Resistance Coating Formulation Pull-out Testing Problem

Feiyang Novel Materials Corporation Limited Polyaspartic Ester Resin
Feiyang Novel Materials Corporation Limited Polyaspartic Ester Resin
City: Shenzhen
Province/State: Guangdong
Tel: 86-755-36694812
Contact Person:
Ms. Annie Qing

Spraying Polyaspartic Weather Resistance Coating Formulation Pull-out Testing Problem

Place of Origin : Zhuhai, China
Brand Name : Feiyang Novel Materials
Certification : ISO 14001-2004, ISO 19001-2000
MOQ : 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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Problem: pull-out test brush is OK, but spraying film failed, only 3-4Mpa, polyaspartic topcoat film delaminate level by level when doing pull-out test. Request Date: Pull-out Testing above 7.5Mpa.
Background:
1. metal substrate
2. Polyaspartc topcoat on polyurethane
3. Machine spraying.
Problem: pull-out test brush is OK, but spraying film failed, only 3-4Mpa, polyaspartic topcoat film delaminate level by level when doing pull-out test.
Equipment:Graco
Pressure Ratio: 70:1
Gas Inputing Pressure:3.5kg
Heating:Paint Compnent A: 60C, Isocynate Hardener Component: 40C
Mix:Static Mix,200mm
Spray Month:163-929
A:B=2:1
Problem:
1. Spraying test: Spraying by Graco equipment, thickness 200Micro, 2days later doing Pull-out Testing, Rubber adhesive is double compenont epoxy glue, result: 3Mpa. Topcoat film breack from top, remain thickness on spindle is about 20Micro, rest 180Micro stay on sample. Polish and repeat this testing, result is same, remain thickness on spindle is about 20Micro, rest 160Micro stay on sample.
2. Brush test: Same formulation , mix with same ratio, brush on sand-blast Fe sample, 2days after doing Pull-out Testing, same rubber adhesive, sample testing method, result is 10Mpa, all film glue to spindle, no remain on sample.
Request Data: Pull-out Testing above 7.5Mpa
Welcome your suggestion.

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  • Malcolm

    Malcolm McNeil

    Owner, McNeil Coatings Consultants, Inc.

    Annie, did you give the polyaspartic enough cure time before the pull tests? Also how did you prepare the polyurethane surface before you applied the polyaspartic?

  • Annie Qing

    Annie Qing

    Polyaspartic Polyurea Resin/Hardener Manufacturer Overseas Biz Manager at Feiyang Novel Materials export@feiyang.com.cn

    Hi, Malcolm, actually we tested both 2 days later after cured, and 7-15 days after cured, situation is the same, no more than 4Mpa.

    And brush test, 2days later, result is satisfied, 10Mpa

  • Malcolm

    Malcolm McNeil

    Owner, McNeil Coatings Consultants, Inc.

    Annie, what surface preparation did you do on the polyurethane before you applied the polyaspartic?

  • Annie Qing

    Annie Qing

    Polyaspartic Polyurea Resin/Hardener Manufacturer Overseas Biz Manager at Feiyang Novel Materials export@feiyang.com.cn

    @Malcolm, no special preparation on polyurethane. Problem is not adhesion of topcoat to primer, problem is polyaspartic topcoat cohesion is bad by spraying.

  • Malcolm

    Malcolm McNeil

    Owner, McNeil Coatings Consultants, Inc.

    Annie, I would like to help you determine why this cohesive failure is happening. I will be in Shanghai next week and would like to get more information and observe the actual physical
    specimens of your tests. Would this be possible?

  • REGY VAN WALLEGHEM

    REGY

    REGY VAN WALLEGHEM

    looking for a new opportunity

    right dolly used in terms of diameter

  • Robert Shinn

    Robert

    Robert Shinn

    New Project

    Annie, Take Malcolm up on his offer to help you. This gentlemen is very wise and has experience that goes beyond explanation. The man is worth his weight in gold when it comes to the painting industry.


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