2results about How to "Avoid brittle cracking" patented technology

The utility model relates to door and window installation technical field provides a connecting assembly and door and window installation assembly, above -mentioned connecting assembly includes: pole body, two flaps, torsional member and first limit piece, the side of pole body is provided with the protruding axle body, and pole body is used for the first connecting hole and second connecting hole of wearing and setting. Two flaps can rotate and set up in axle body. Torsional member, set up between two flaps, drive two flaps to unfold to two sides respectively to the pole body, to be connected in the clamping groove of the section bar away from the one side of support. First limit piece, set up in pole body, are used for abutting on the one side of support away from section bar. The utility model discloses connecting assembly, two flaps will unfold to two sides automatically under the drive of torsional member after passing through second connecting hole completely, and be connected in the clamping groove of section bar, and the second limit piece of other side will support be pressed on section bar to fix section bar and support, in the whole process, the hole wall of second connecting hole of section bar will not be extruded and rubbed.

This invention relates to the field of multilayer curable base film technology, specifically to the online coating of polyester optically curable base films and its preparation method. This invention overcomes the problem in existing technologies where the adhesion and optical performance of the curable base film cannot be simultaneously achieved. First, this invention obtains core-shell structured functional particles by modifying in-situ polymethyl methacrylate with nano-silica; second, it obtains modified PET by melt blending optical-grade PET chips; finally, it melts the functional particles and modified PET to obtain an anti-adhesion masterbatch, prepares a composite base film through three-layer co-extrusion and biaxial stretching, coats it with a functional coating liquid, cures it stepwise to form a curing layer, and then heat-sets it to obtain the optically curable base film. Through base film modification, functional particle core-shell design, three-layer co-extrusion structure, and the synergistic effect of coating and process, this invention produces a polyester optically curable base film that combines high optical performance and good coating adhesion, applicable to release protection in the electronics field, decoration in the home appliance field, and other fields.