Preparation and Properties of Aspartic Polyurea Stitching Agent Modified by Aldehyde Imide
Aldehyde imide modified aspartate polyurea resin was used as the host resin and aliphatic isocyanate was used as the curing agent to prepare a modified aspartic polyurea stitching agent with long activation period,rapid drying and ultra-high solid content.The effects of different aldehydes and dosage on the properties of the stitching agent were investigated.The results showed that the modified aspartame stitching agent had a solid content of more than 99.5%when the molar ratio of hydroxypivalaldehyde was 20%and surface drying is within 20 min,the paint film has excellent yellowing resistance,abrasion resistance and mechanical strength,and is an excellent environment-friendly long-term high-end beautiful seam materia
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