{"id":1731,"date":"2025-10-31T08:15:42","date_gmt":"2025-10-31T08:15:42","guid":{"rendered":"https:\/\/ws-b9o6hg.wpkz.site\/?p=1731"},"modified":"2025-11-28T04:40:42","modified_gmt":"2025-11-28T04:40:42","slug":"comparative-application-testing-of-eep-and-pma-in-2k-pu-system","status":"publish","type":"post","link":"https:\/\/www.prechems.com\/es\/lab-reports\/comparative-application-testing-of-eep-and-pma-in-2k-pu-system\/","title":{"rendered":"Comparative Application Testing of EEP and PMA in 2K PU System"},"content":{"rendered":"

Experimental Purpose and Conditions<\/strong><\/strong><\/strong><\/h2>\n\n\n\n

Apply the new solvent EEP and the traditional solvent PMA respectively in a 2K PU system. Compare the performance differences generated by the two in the 2K PU system by analyzing the results of a series of tests.<\/p>\n\n\n\n

Test Conditions: Temperature 25-27\u00b0C, Humidity 50-60%.<\/p>\n\n\n\n

Test Basis: Refer to QC\/T484-1999 Automotive Paint Coating Standard.<\/p>\n\n\n\n

Experiment and Data Analysis<\/strong><\/h2>\n\n\n\n
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1. <\/strong>Clear Coat Preparation:<\/strong><\/p>\n\n\n\n

Technical Parameters of Main Raw Materials:<\/p>\n\n\n\n

Name<\/strong><\/td>Apariencia<\/strong><\/td>Punto de inflamaci\u00f3n<\/strong><\/td>Purity<\/strong><\/td>Punto de ebullici\u00f3n<\/strong><\/td>Viscosity 25\u00b0C, mPa.s<\/strong><\/td><\/tr>
EEP (Ethyl 3-Ethoxypropionate)<\/td>Colorless Transparent<\/td>59\u00b0C<\/td>\u226599%<\/td>169\u00b0C<\/td>1.3<\/td><\/tr>
PMA (Propylene Glycol Monomethyl Ether Acetate)<\/td>Colorless Transparent<\/td>42\u00b0C<\/td>\u226599%<\/td>145\u00b0C-146\u00b0C<\/td>1.6-2.5<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Clear Coat Main Component Formulation:<\/p>\n\n\n\n

No.<\/strong><\/strong><\/td>Material<\/strong><\/strong><\/td>Dosage A1<\/strong><\/strong><\/td>Dosage A2<\/strong><\/strong><\/td>Supplier<\/strong><\/strong><\/td>Production Process<\/strong><\/strong><\/td><\/tr>
1<\/td>SM 516\/70BAC Hydroxypropyl Resin<\/td>95<\/td>95<\/td>Cytec<\/td>Add materials in sequence, disperse at medium speed 500 rpm for 5 minutes;<\/td><\/tr>
2<\/td>EEP<\/td>5<\/td>–<\/td>PREC<\/td><\/tr>
3<\/td>PMA<\/td>–<\/td>5<\/td>Commercial<\/td><\/tr>
 <\/td>Total<\/td>100<\/td>100<\/td> <\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Coating Curing Agent B Formulation:<\/p>\n\n\n\n

No.<\/strong><\/strong><\/td>Material<\/strong><\/strong><\/td>Dosage<\/strong><\/strong><\/td>Supplier<\/strong><\/strong><\/td><\/tr>
1<\/td>HT-100 Curing Agent<\/td>30<\/td>Wanhua<\/td><\/tr>
2<\/td>Butyl Acetate<\/td>20<\/td>Commercial<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Thinner Formulation:<\/p>\n\n\n\n

No.<\/strong><\/strong><\/td>Material<\/strong><\/strong><\/td>Dosage C1<\/strong><\/strong><\/td>Dosage C2<\/strong><\/strong><\/td>Supplier<\/strong><\/strong><\/td><\/tr>
1<\/td>Butyl Acetate<\/td>90<\/td>90<\/td>Commercial<\/td><\/tr>
2<\/td>EEP<\/td>10<\/td>–<\/td>PREC<\/td><\/tr>
3<\/td>PMA<\/td>–<\/td>10<\/td>Commercial<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

<\/p>\n\n\n\n

Coating Ratio:<\/p>\n\n\n\n