A kind of machine printing silica gel for pigment printing and its preparation method and application

Abstract

The invention belongs to the technical field of organosilicon, and discloses a continuous machine-printable, excellent-performance machine-printed silica gel for pigment printing, a preparation method thereof, and an application in the field of textile printing. The machine-printed silica gel for pigment printing includes unsaturated silicon oxide, a cross-linking agent containing silicon-hydrogen bonds, a catalyst for hydrosilylation and a reinforcing agent; the reinforcing agent includes an inorganic reinforcing agent and an organic reinforcing agent. agent. The invention creatively uses a composite reinforcement system, which not only ensures good net-passing property and good ink return performance of the product silica gel, but also designs and uses siloxane, MQ resin and hydrogen-containing organic matter with a certain configuration, so that the reaction temperature and operation time of the product have a certain With a wide range, it can achieve continuous machine printing for more than 4 hours without dead glue blocking the screen, which improves production efficiency; the preparation method of the present invention is simple, environmentally friendly and energy-saving, and the obtained silica gel is stable in storage and has excellent performance, with less air bubbles, easy leveling, fastness Good, anti-skid and other advantages, can be widely used in the field of textile printing.

Description

Technical field [0001] The invention belongs to the technical field of organic silicon, and in particular relates to a machine-printed silica gel for pigment printing with continuous machine printing and excellent performance, a preparation method thereof, and application in the textile printing field. Background technique [0002] Silicone gel is a kind of organic silicon product, which is a semi-inorganic material with excellent heat and cold resistance, corrosion resistance, weather resistance, etc. Because of the wide viscosity range, the fluidity of low-viscosity fluid, the viscosity of high-viscosity fluid, and the controllable characteristics of vulcanization conditions, the addition-molded liquid silicone rubber can effectively control the operation and construction conditions according to needs. Injection molding in-situ and other fields have been widely used. [0003] At present, in the textile printing industry at home and abroad, printing coatings are generally thermos...

AI Technical Summary

Problems solved by technology

However, at home and abroad, due to problems such as blockage of the screen plate and serious slurry failure in the process of using silicone gel, most of them are produced by manual treadmills, resulting in low production efficiency and poor stability of product batches. For today's rising labor costs and increasingly widespread mechanization, it will undoubtedly greatly hinder the use and promotion of silicone gel.

[0004] There are also relevant reports about the preparation of silica gel for printing at present. Chinese patent application CN101798391A reports a preparation method for preparing silica gel for textiles, but its base glue preparation process is cumbersome. Under 5 atmospheres, it takes 4 to 6 hours to process, which consumes time and energy; the treatment of white carbon black in Chinese patent application CN101550659A is the same as CN101798391A, which consumes time and energy; Chinese patent application CN103031748 prepares a condensation type silicone gel, and its curing process Generate a certain amount of waste and generate VOC

[0005] The printed silicone gel mentioned in the above-mentioned patent documents is not suitable for factory mechanization, and is not conducive to the promotion of industries with high production efficiency requirements. The plate is clogged, and the rubber material is quickly and easily (about 1 hour) dead, which leads to the failure of continuous production of the machine; 2. The product cannot meet the requirements of good screen performance and good ink return performance at the same time, making the screen printing process complicated and cumbersome. Time-consuming and labor-intensive, not conducive to product promotion

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