Rapid silicon transfer detection method of silicon-containing release film

Abstract

The invention relates to a rapid silicon transfer detection method of a silicon-containing release film, thereby detecting a silicon transfer rate of the silicon-containing release film. The method comprises the following steps: testing a silicon coating amount A of a to-be-detected silicon-containing release film sample before treatment by adopting an X fluorescence spectrum analyzer; cutting a clean silicon-free film material for later use; uniformly and completely coating a release surface of the to-be-detected silicon-containing release film sample with a silicon-free test adhesive and peeling off the silicon-free film material after curing of silicon-free test adhesive to obtain a treated silicon-containing release film sample; testing a silicon coating amount B of the treated silicon-containing release film sample again by using the X fluorescence spectrum analyzer; and calculating a silicon transfer rate based on a formula: K=((A-B) / A)*100% and analyzing whether the silicon-containing release film meets the use requirements or not. According to the invention, the contact effect of the adhesive and the release surface is enhanced based on actual application simulation, so that the test time is shortened to be within one hour; and whether the release film is suitable or not is determined according to the silicon coating amount change rate before and after release film treatment.

Description

Technical field: [0001] The invention relates to the technical field of release film detection, in particular to a method for rapidly detecting silicon transfer of a release film containing silicon. Background technique: [0002] Release film is widely used in packaging, printing, flexible circuit, electronics, adhesive products, die-cutting and stamping processing and other industries, and has the functions of isolation, filling, protection, and easy peeling. Among them, silicone oil-coated release films often have silicone oil transfer in die-cutting applications, resulting in decreased adhesion of acrylic pressure-sensitive tapes or contamination of finished products, which has brought many problems to production and application. At present, for the transfer of silicone oil, the residual adhesion rate is mostly used to evaluate the residual adhesion rate. The test of the residual adhesion rate is introduced in detail in FINATFTM11 and GB / T 25256-2010. Due to the differen...

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Problems solved by technology

These test methods generally require at 70g / cm 2 Place it under the pressure condition for 20 hours before testing, the process is cumbersome and the test time is long

There is a patent report to evaluate the crosslinking rate of silicon by soaking the silicon-based release film in a solvent for 12-72 hours. This method also takes a long time, and the use of a large amount of solvent is not friendly to the environment.

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