Mono-component polyurethane protective film pressure-sensitive adhesive and synthesis process thereof

Abstract

The invention discloses a mono-component polyurethane protective film pressure-sensitive adhesive and a synthesis process thereof. The pressure-sensitive adhesive is produced from, by mass, 40-70% of polyether polyol or polyester polyol, 0.05-3% of a catalyst, 30-50% of a solvent, 0.05-2% of modified polysiloxane, and 5-15% of blocked hexamethylene diisocyanate. The synthesis process includes the following steps: weighing the raw materials and adding the raw materials into a stirring kettle according to the ratio hereinabove, uniformly stirring the raw materials under a normal temperature drying condition, and seal-packaging the mixture to prepare the pressure-sensitive adhesive. During use, the pressure-sensitive adhesive is uniformly stirred under the normal temperature drying condition and then is filtered and is allowed to stand for 10 min; and a PET film is coated with the pressure-sensitive adhesive by a coating machine; after the adhesive is surface-dried, the PET film is rolled up, and the adhesive film is aged for 5 days at normal temperature. The mono-component pressure-sensitive adhesive is low in viscosity and good in compatibility, is colorless and transparent, can be stored for more than 3 months under a normal temperature drying and sealed condition, and solves a problem of long operation time at normal temperature. The PET protective film formed by the mono-component pressure-sensitive adhesive is free of white fog and residual adhesive at normal temperature.

Description

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine

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AI Technical Summary

Benefits of technology

This new type of material used in this technology allows it to stick well when exposed to air or water vapor without losing its effectiveness over an extended period of use. It also maintains their appearance even after being left outdoors during storage periods up until needed again later on.

Problems solved by technology

This patented technical problem addressed by this patents relates to finding ways to improve the performance (strength) of pressure - sensitivity adhesors when exposed to harsh environments such as extreme temperatures during manufacturing processes.

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