3results about How to "Scratch resistance" patented technology

This invention provides a mechanically durable, antibacterial, and environmentally friendly marine antifouling coating, its preparation method, and its application. Belonging to the field of marine antifouling materials technology, it comprises the following components: a fluorinated quaternary ammonium salt polysiloxane prepolymer; nano-titanium dioxide; a curing agent; and pigments. The fluorinated quaternary ammonium salt polysiloxane prepolymer is prepared by dehydration condensation reaction of quaternary ammonium salt silane monomer A, phenyl silane monomer B, and fluorinated silane monomer C in an organic solvent under the action of an alkaline catalyst. The quaternary ammonium salt compounds used in this invention possess excellent environmental compatibility and outstanding rapid antibacterial and algaecidal effects, endowing the material surface with continuous microbial inhibition and killing properties. By disrupting the integrity of bacterial cell membranes and interfering with the activity of biological enzymes, it blocks the colonization and reproduction chain of marine attached organisms from the source, significantly improving the coating's resistance to typical fouling organisms such as barnacles and diatoms. Simultaneously, it can significantly improve the coating's modulus and hardness, making it more resistant to scratches, abrasions, and impacts.

The invention provides an aluminum-based silicon carbide composite plate strip, and relates to the technical field of plate strips, a high-temperature transition layer is used for realizing gradient transition of high-temperature resistance and thermal stress, can effectively relieve high-temperature temperature difference stress between a zirconium modified pure aluminum anti-cracking main body layer and the high-temperature transition layer of a plate, and avoids deformation and cracking of the whole structure of the plate due to overlarge cold and hot gradient; the low-temperature buffer layer is matched with the boron fiber enrichment transition layer, so that the high-temperature-resistant strength of the transition area can be further improved, the boron fiber enrichment transition layer is prevented from structural instability at high temperature, the low-temperature buffer layer can realize gradient transition of low-temperature resistance and stress, and the low-temperature shrinkage stress of the lower layer of the plate can be effectively relieved; the temperature-resistant composite main body layer can bear the stress of all upper-layer structures and uniformly disperse the stress to the whole region, stable support is provided for all upper-layer functional structures, meanwhile, the temperature resistance of the temperature-resistant composite main body layer is complementary with the temperature-resistant and low-temperature-resistant structures of all the layers, and finally the comprehensive effects of heat resistance, cold resistance, cracking resistance and protection of the plate are achieved.

The utility model discloses a beverage label with a variable two-dimensional code and a verification code, which relates to the technical field of plastic printing and comprises a substrate material layer, a functional information layer fixedly connected to the front side of the substrate material layer, a moisture-proof layer fixedly connected to the front side of the functional information layer, and a protective covering layer fixedly connected to the front side of the moisture-proof layer. A variable two-dimensional code is embedded in the left side of the front face of the function information layer, a verification code is embedded in the right side of the front face of the function information layer, the substrate material layer is made of a polylactic acid film, and the thickness range of the substrate material layer is 20-30 micrometers. According to the anti-fake label, the label can present different patterns or information under different illumination conditions, the copying difficulty is increased, meanwhile, the authenticity of the product is further verified through the verification code, and a convenient and reliable anti-fake verification mode is provided for consumers through combination of the verification code and the anti-fake label.