Outdoor decorative film composition for plastic door window and preparation method of outdoor decorative film

Abstract

Provided are an outdoor decorative film composition for a plastic door window and a preparation method of the outdoor decorative film. The composition is prepared from 6-25 parts of acrylonitrile, 30-58 parts of styrene, 15-40 parts of butyl acrylate, 7-32 parts of polymethyl methacrylate, 5-35 parts of polyvinylidene fluoride and 1-8 parts of a dispersing agent. The outdoor decorative film composition for the plastic door window and the preparation method of the outdoor decorative film have the advantages that the outdoor decorative film is a single-layer film, the cost is far lower than that of an imported PVC multilayer composite film, and therefore application and promotion are facilitate; meanwhile, the stripping problem between two layers of the films can be avoided. The glass transition temperature of butyl acrylate is minus 55 degrees, and therefore the outdoor decorative film can still keep the good flexibility even in the cold winter. Polymethyl methacrylate is higher in weather resistance than that of ASA and high in hardness, and therefore the surface scratch resistance is good.

Description

technical field [0001] The invention belongs to the technical field of auxiliary materials for plastic doors and windows, in particular to an outdoor decorative film composition for plastic doors and windows and a preparation method for the outdoor decorative film. Background technique [0002] Since the 1980s, plastic doors and windows were introduced into China from Europe. Because plastic doors and windows have good thermal insulation, water tightness and air tightness, and sound insulation performance, they have been widely used rapidly. The original plastic doors and windows were made of white profiles. In 2002, after ASA and PMMA color co-extruded profiles were put on the market, plastic doors and windows entered the era of color. However, during the use of colored co-extruded doors and windows, problems that did not appear in white doors and windows appeared, mainly manifested as deformation and cracking of welding corners, which caused extremely bad effects on the p...

AI Technical Summary

Problems solved by technology

The disadvantages of this PVC multilayer composite film are: 1) The user cannot detect the peel strength between the PMMA surface layer and the printing layer, so there is an uncontrollable risk; 2) The anti-aging of the PVC multilayer composite film mainly depends on the thin surface Provided by a thin layer of PMMA surface layer, so the effect is not very good

3) Due to the poor weather resistance of PVC multilayer composite film, even if it is stored in the indoor warehouse, there is a shelf life, usually one to two years. After the shelf life, the PVC multilayer composite film will be unusable due to deterioration

4) Every winter, due to the cold weather, the PVC multilayer composite film will become hard and brittle, which makes the laminating process difficult

But this kind of outdoor decorative film has many problems in the process of use. One is that the film is too hard, and the manufacturability is not good when it is attached to the co-extruded profile.

The second is that this kind of outdoor decorative film is prone to white marks when it is folded in half.

The third is that the scratch resistance of this outdoor decorative film is not good, and a fingernail mark will appear when you scratch it lightly with your fingernail.

Fourth, the peel strength between the ASA base film and the PMMA mask is not easy to detect. If the control is not good, the problem of delamination will easily occur

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