Modified vinyl silicone oil, preparation method thereof, as well as printing silica gel basic glue and printing silica gel comprising modified vinyl silicone oil

Abstract

The invention provides modified vinyl silicone oil, a preparation method thereof, as well as a printing silica gel basic glue and a printing silica gel comprising the modified vinyl silicone oil. Themodified vinyl silicone oil is a reaction product of vinyl silicone oil, polymer polyhydric alcohol and maleic anhydride. The printing silica gel basic glue is prepared by adopting the modified vinylsilicone oil, the vinyl silicone oil, fumed silica, tetramethyl divinyl disilazane, an epoxy group-containing silane coupling agent and water as raw materials, kneading and reacting. The printing silica gel is prepared from a component A and a component B with the mass ratio being (8 to 12):1, wherein the component A is prepared from the following components in parts by mass: 80 to 88 parts of theprinting silica gel basic glue, 10 to 15 parts of the vinyl silicone oil and 0.5 to 1 part of a catalyzer; the component B is prepared from the following components in parts by mass: 3 to 4.2 parts of hydrogen-containing vinyl MQ resin and 5 to 7 parts of the vinyl silicone oil. The modified vinyl silicone oil provided by the invention has better wettability on leather, so that the adhesion forceof the printing silica gel on the leather can be improved.

Description

technical field [0001] The invention belongs to the technical field of silica gel, and in particular relates to a modified vinyl silicone oil, a preparation method thereof, and printing silica gel base glue and printing silica gel containing the modified vinyl silicone oil. Background technique [0002] With the improvement of people's living standards, the decoration on leather is no longer limited to ordinary printing, and more texture is pursued. Because the printed pattern formed by printed silicone has a three-dimensional effect and soft hand feeling, it can give the leather a good visual effect, and at the same time increase the physical properties of the leather such as light resistance and wear resistance, so it is widely used in leather decoration. [0003] At present, many studies have been devoted to further improving the performance of printed silicone. For example, CN 106930122A discloses a printing silica gel with one-time forming for screen printing and its p...

AI Technical Summary

Problems solved by technology

For example, CN 106930122A discloses a printing silica gel with one-time forming for screen printing and its preparation method, which overcomes the defect that traditional printing silica gel needs to be printed multiple times, which easily leads to inaccurate alignment; CN 106868891A discloses a natural printing silica gel for screen printing. Dry printing silica gel and its preparation method can shorten the time required for natural drying of printed silica gel; CN 106996045A discloses a reinforced printing silica gel for screen printing and its preparation method, which solves the problem of easy poisoning of platinum catalyst on the surface of diving cloth and nylon cloth Inactivation, resulting in the difficulty of normal curing of printed silicone and low bond fastness

[0004] However, the above-mentioned printed silica gel and the printed silica gel on the market still have the problem of poor adhesion on leather, which also restricts the application of printed silica gel on leather.

[0005] At present, there are two main methods to improve the adhesion of printed silica gel on leather: one is to print a layer of adhesive on the leather with good compatibility with silica gel, but it can only make the adhesion of printed silica gel reach 2-2.5 MPa, and the adhesive contains a large amount of organic solvents, which is contrary to the purpose of pursuing environmental protection at this stage; the second is to add a modified coupling agent, but this method can only slightly improve the adhesion of printed silicone, and still cannot reach the level of leather Printing Requirements for Adhesion

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