Two-component acrylic structural adhesive with improved storage stability

• Main Author: TONG LINGJIE
• Format: Patent
• Language: Chinese; English
• Published: 13.04.2021
• Subjects: ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; ADHESIVES; CHEMISTRY; DYES; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; PAINTS; POLISHES; USE OF MATERIALS AS ADHESIVES

The invention relates to a two-component acrylic structural adhesive comprising a component (A) and a component (B), wherein the component (A) comprises 30-85 parts by weight of a polymerizable acrylate monomer, 5-15 parts by weight of an acidic polymerizable acrylic monomer, 0.1-1.0 part by weight of a thiourea stabilizer, and 0.5-2.0 parts by weight of a tertiary amine reducing agent, and the component (B) comprises 10-50 parts by weight of an epoxy resin and 10-60 parts by weight of a diacylperoxide-based curing agent. The two-component acrylic structural adhesive of the present invention has improved indoor storage stability, for example, the adhesive exhibits indoor storage stability of more than 9 months, and does not gel after aging at 70 DEG C for 24 hours. In addition, the two-component acrylic structural adhesive has good bonding strength after being cured. 本发明涉及双组分丙烯酸系结构粘合剂，其包括组分(A)和组分(B)，其中所述组分(A)包含30-85重量份的可聚合丙烯酸酯类单体、5-15重量份的酸性可聚合丙烯酸类单体、0.1-1.0重量份的硫脲类稳定剂和0.5-2.0重量份的叔胺类还原剂，并且其中所述组分(B)包含10-50重量份的环氧