Flame treatment method for improving adhesion of PE material and foaming liquid

Abstract

The invention relates to the technical field of PE (polyethylene) materials, and discloses a flame treatment method for improving adhesion of a PE material and foaming liquid, which comprises the following steps: S1, preparing a PE material plate, and removing impurities such as oil stain and dust on the surface of the PE material plate; s2, carrying out flame treatment on the PE material according to the set parameters by using specific flame treatment equipment; s3, the treated PE material is cooled, so that the PE material is recovered to the room temperature; the cooling mode can be natural cooling or forced cooling and is specifically selected according to actual conditions; and S4, the surface of the treated PE plate is coated with foaming liquid, and the bonding effect of the PE plate is observed. According to the flame treatment method for improving the adhesion of the PE material and the foaming liquid, the adhesion is remarkably improved, and a layer of microscopic rough structure and polar groups can be formed on the surface of the PE material, so that the adhesion of the PE material and the foaming liquid is greatly improved. The bonding strength of the treated PE material and foaming liquid can be improved by more than 200%.

Description

Technical Field

[0001] The invention relates to the technical field of PE materials, in particular to a flame treatment method for improving the adhesion between PE materials and foaming liquid. Background Art

[0002] In many industrial applications, it is often necessary to use PE materials in combination with foaming liquid. However, due to the relatively inert chemical properties of the surface of PE materials, the adhesion to the foaming liquid is often poor, which greatly limits its application effect and development potential in related fields. The existing methods for improving the adhesion between PE and foaming liquid have many shortcomings, such as unstable treatment effect, complicated operation, high cost, and unfriendly to the environment. Therefore, it is of great practical significance to develop an efficient, simple, environmentally friendly and low-cost method for improving the adhesion between PE materials and foaming liquid. Summary of the invention

[0003] The purpose of the present invention is to provide a flame treatment method for improving the adhesion between PE material and foaming liquid, improving the adhesion between PE material and foaming liquid, and preventing the peeling between the two, so as to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solution: a flame treatment method for improving the adhesion between PE material and foaming liquid, comprising the following steps:

[0005] S1. Prepare a piece of PE material sheet, clean it, remove oil, dust and other impurities on the surface, so as to ensure that the flame can directly act on the surface of the material;

[0006] S2. Use specific flame treatment equipment to flame treat the PE material according to the set parameters; during the treatment process, ensure that the flame evenly sweeps across the surface of the material to avoid local overheating or insufficient treatment;

[0007] S3, cooling the treated PE material to restore it to room temperature; the cooling method can be natural cooling or forced cooling, which is selected according to the actual situation;

[0008] S4. Apply the foaming liquid on the treated surface of the PE sheet and observe its bonding effect.

[0009] Furthermore, in step S2, the flame temperature is controlled between 800°C and 1100°C, and the processing speed is 1.5 m / s. This temperature range can cause moderate oxidation and micro-melting of the PE surface without causing excessive damage to the material.

[0010] Furthermore, in step S2, the distance between the flame and the surface of the plate is maintained at 50 mm-100 mm to ensure the uniformity and stability of the treatment effect.

[0011] Furthermore, the flame treatment time in step S2 is 1.5 m / s to ensure that the flame can fully act on the surface of the material.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. Significantly improve the adhesion. Through the flame treatment method of the present invention, the flame treatment induces the formation of C=O polar groups on the PE surface (verified by FTIR spectrum), and at the same time forms a 3-5μm microscopic rough structure (supported by SEM images), which has a dual effect of improving the wettability of the foaming liquid and the mechanical anchoring effect, thereby greatly improving its bonding performance with the foaming liquid. The bonding strength between the treated PE material and the foaming liquid can be increased by more than 200%;

[0014] 2. Easy to operate. This method is easy to operate and does not require complicated equipment and processes. Ordinary operators can master it after simple training;

[0015] 3. Low cost. The flame treatment equipment used in the present invention has a relatively low cost, and no expensive chemical reagents are required during the treatment process, so the production cost can be effectively reduced by 40% (the energy consumption of the equipment is 1 / 3 of that of the chemical method, and no chemical reagents are required);

[0016] 4. Environmentally friendly, no harmful substances are produced during the flame treatment process, and there is no pollution to the environment; at the same time, the treated PE material does not require additional cleaning and treatment, reducing the consumption of water resources and environmental pollution;

[0017] 5. Wide applicability. The flame treatment method of the present invention is applicable to PE material workpieces of various shapes and sizes and has wide applicability; whether it is a flat plate, a three-dimensional material or a component with a complex shape, this method can be used for treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings without creative work. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, each element or part is not necessarily drawn according to the actual scale.

[0019] Figure 1 The figure is a flowchart of the method of the present invention. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0021] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Embodiment 1

[0024] See also Figure 1 The present invention provides a technical solution: a flame treatment method for improving the adhesion between PE material and foaming liquid, the steps are as follows:

[0025] The following steps are involved:

[0026] S1. Prepare a 3mm thick PE material sheet, clean the PE material sheet, remove oil, dust and other impurities on the surface to ensure that the flame can directly act on the material surface;

[0027] S2. Use specific flame treatment equipment to flame treat the PE material according to the set parameters. During the treatment process, ensure that the flame evenly sweeps across the material surface to avoid local overheating or insufficient treatment. Control the flame temperature between 800℃-1100℃ and the treatment speed at 1.5m / s. This temperature range can cause moderate oxidation and micro-melting of the PE surface without causing excessive damage to the material. Keep the distance between the flame and the surface of the sheet at 50mm-100mm to ensure the uniformity and stability of the treatment effect. According to the thickness and shape of the PE material, the flame treatment time is 1.5m / s. Too fast speed will lead to insufficient treatment, and too slow speed will easily cause material deformation. Ensure that the flame can fully act on the material surface. The flame temperature is strictly controlled between 800℃-1100℃. It has been verified through experiments that the best oxidation layer (polar group) and micro-roughness can be formed within this range to avoid material carbonization (over 1100℃) or insufficient oxidation (below 800℃).

[0028] S3, cooling the treated PE material to restore it to room temperature; the cooling method can be natural cooling or forced cooling, which is selected according to the actual situation;

[0029] S4. Apply the foaming liquid on the treated PE sheet surface and observe its bonding effect. After testing, the bonding strength reaches 1.4N / cm 2 , significantly higher than that of untreated panels.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flame treatment method for improving the adhesion between PE material and foaming liquid, characterized in that: The following steps are involved: S1. Prepare a piece of PE material sheet, clean it, remove oil, dust and other impurities on the surface, so as to ensure that the flame can directly act on the surface of the material; S2. Use specific flame treatment equipment to flame treat the PE material according to the set parameters; during the treatment process, ensure that the flame evenly sweeps across the surface of the material to avoid local overheating or insufficient treatment; S3, cooling the treated PE material to restore it to room temperature; the cooling method can be natural cooling or forced cooling, which is selected according to the actual situation; S4. Apply the foaming liquid on the treated surface of the PE sheet and observe its bonding effect.

2. A flame treatment method for improving the adhesion between PE material and foaming liquid according to claim 1, characterized in that: In step S2, the flame temperature is controlled between 800°C and 1100°C, and the processing speed is 1.5 m / s. This temperature range can cause moderate oxidation and micro-melting of the PE surface without causing excessive damage to the material.

3. A flame treatment method for improving the adhesion between PE material and foaming liquid according to claim 1, characterized in that: In step S2, the distance between the flame and the surface of the plate is maintained at 50 mm-100 mm to ensure the uniformity and stability of the treatment effect.

4. A flame treatment method for improving the adhesion between PE material and foaming liquid according to claim 1, characterized in that: The flame treatment time in step S2 is 1.5 m / s to ensure that the flame can fully act on the surface of the material.

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