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Composite membrane as well as preparation method and application thereof

A composite film and release film technology, applied in the field of composite materials, can solve the problems of cumbersome construction steps, poor adhesion of ordinary glue and adhesive, and tight adhesion of decorative films.

Inactive Publication Date: 2022-01-28
佛山(华南)新材料研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the surface of ordinary polyolefin decorative films is non-polar, and has poor adhesion to ordinary glues and adhesives. Direct use such as polyurethane latex cannot effectively bond the decorative film to the surface of the substrate. Secondary treatment, such as coating a layer of surface polarity treatment agent on the surface of the polyolefin film or improving the surface polarity by corona treatment, the construction steps are cumbersome

Method used

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  • Composite membrane as well as preparation method and application thereof
  • Composite membrane as well as preparation method and application thereof
  • Composite membrane as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0184] This embodiment discloses a composite membrane, and the structural schematic diagram of the composite membrane is as follows figure 1 As shown, it is formed by laminating four layers, which are the adhesive layer 1, the polypropylene substrate layer 2, the connection layer 3 and the release BOPET layer 4 in sequence.

[0185] The preparation process of described composite film comprises:

[0186] (I) Preparation of adhesive layer materials: Weigh the raw materials of each component of the adhesive layer according to the composition ratio in Table 1, and put them into a high-speed mixer for homogeneous mixing. The speed of the mixer is 1400r / min, and the mixing time is 0.6min. Then the raw material mixture was put into a twin-screw extruder for melt kneading and extrusion, and the extrusion temperature was 190°C. The extruded samples were cooled and pelletized for later use.

[0187] Preparation of polypropylene substrate layer materials: Weigh the raw materials of ea...

Embodiment 2

[0200] This embodiment discloses a composite membrane, and the specific preparation process includes:

[0201] (I) Preparation of adhesive layer materials: Weigh the raw materials of each component of the adhesive layer according to the composition ratio in Table 2, and put them into a high-speed mixer for homogeneous mixing. The speed of the mixer is 1000r / min, and the mixing time is 1min. Then the raw material mixture was put into a twin-screw extruder for melt kneading and extrusion, and the extrusion temperature was 210°C. The extruded samples were cooled and pelletized for later use.

[0202] Preparation of polypropylene substrate layer materials: Weigh the raw materials of each component of the polypropylene substrate layer according to the composition ratio in Table 2, and put them into a high-speed mixer for homogeneous mixing. The speed of the mixer is 1800r / min, and the mixing time is 1min. Then the raw material mixture was put into a twin-screw extruder for melt ...

Embodiment 3

[0214] This embodiment discloses a composite membrane, and the specific preparation process includes:

[0215] (I) Preparation of adhesive layer materials: Weigh the raw materials of each component of the adhesive layer according to the composition ratio in Table 3, and put them into a high-speed mixer for homogeneous mixing. The speed of the mixer is 1200r / min, and the mixing time is 0.8min. Then the raw material mixture is put into a twin-screw extruder for melt kneading and extrusion, and the extrusion temperature is 170°C. The extruded samples were cooled and pelletized for later use.

[0216] Preparation of polypropylene substrate layer materials: Weigh the raw materials of each component of the polypropylene substrate layer according to the composition ratio in Table 3, and put them into a high-speed mixer for homogeneous mixing. The speed of the mixer is 1600r / min, and the mixing time is 0.5min. Then the raw material mixture is put into a twin-screw extruder for melt...

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Abstract

The invention belongs to the technical field of composite materials, and discloses a composite film as well as a preparation method and application thereof. The composite film comprises a polyolefin base material layer and a release type BOPET layer which are connected with each other; the composite film further comprises a gluing layer located on the side, away from the release type BOPET layer, of the polyolefin base material layer; and raw materials of the gluing layer comprise polyolefin and TPU. The composite film disclosed by the invention has good scratch resistance and stain resistance. When the composite film is connected with a substrate, the composite film has the characteristic of simple and convenient construction steps.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a composite film and its preparation method and application. Background technique [0002] Nowadays, the materials used in decorative films are mainly divided into two types: paper materials and polymer film materials. Polymer membrane materials have the characteristics of simple source and excellent performance, and polyvinyl chloride (PVC) is commonly used. PVC has the advantages of good printability and can emboss simulated wood grain, and is widely used in high-end panel furniture. Compared with PVC, polyolefin has better comprehensive performance, and its water resistance, aging resistance and mechanical properties are better. Moreover, polyolefin does not contain chlorine and heavy metals, and the waste can be recycled. It is an ideal raw material for a new generation of environmentally friendly decorative films. [0003] Nowadays, for the prepara...

Claims

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Application Information

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IPC IPC(8): B32B27/36B32B27/08B32B27/32B32B7/06C09J7/29C09J7/30C09J123/12C09J175/04C09J11/08C09J11/06C08J5/18C08L23/12A47B96/20E04F13/077E04B9/04
CPCB32B27/36B32B27/08B32B27/32B32B7/06C09J7/29C09J7/30C09J123/12C09J11/08C09J11/06C08J5/18A47B96/20E04F13/0866E04F13/0871E04B9/045C09J2301/122C09J2301/16C09J2423/10C09J2423/106C09J2423/046C08J2323/12C08L75/04C08L23/06C08K5/20C08K5/526
Inventor 刘耀春刘嘉贤樊小军
Owner 佛山(华南)新材料研究院
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