Method for measuring coating adhesive strength on a coating body using flexible material as substrate
A technology of adhesion strength and flexible materials, applied in the direction of measuring devices, analysis materials, instruments, etc., can solve the problems of low accuracy, achieve the effect of simple operation, overcome subjectivity, and optimize process parameters
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment approach
[0023] According to a specific embodiment of the present invention, the measuring method of coating adhesion strength provided by the present invention comprises the following steps:
[0024] (1) A surface with a coating at one end of the coated body is closely attached to the adhesive tape, and the coating is closely combined with the adhesive tape to the greatest extent by a pressure of 0.05-0.1 MPa;
[0025] (2) The coated body is bent 180° along the surface not bonded with the adhesive tape, so that the two ends of the coated body are parallel to each other;
[0026] (3) Fix the respective outer surfaces of the two ends parallel to each other on two rigid plates;
[0027] (4) Fix the two rigid boards on the two clamping ends of the peel force tester respectively, wherein the end with the adhesive tape is clamped and fixed by the clamping end which is the fixed end, and the unbonded end is clamped and fixed. The other end of the belt is held by the gripping end which is th...
preparation Embodiment 1
[0033] Preparation Example 1 A negative electrode sheet for measuring the dressing strength was prepared.
[0034] 100 parts by weight of negative electrode active material natural graphite, 1.0 parts by weight of binder polyvinylidene fluoride (PVDF) and 1.0 parts by weight of conductive agent carbon black are added in 120 parts by weight of N-methylpyrrolidone (NMP), then vacuum Stir in a mixer to form a stable and uniform negative electrode slurry. The slurry is evenly coated on a copper foil with a width of 400 mm and a thickness of 0.018 mm, and after drying at 120 ° C and rolling, it is cut on a slitting machine to obtain a size of 140.0 mm (length) × 45.0 mm ( width) × 0.145 mm (thickness) negative pole piece b1.
preparation Embodiment 2-5
[0036] Preparation Examples 2-5 Negative electrode sheets for measuring dressing strength were prepared.
[0037] According to the same method as Preparation Example 1, the size of the negative electrode sheet is 140.0 mm (length) × 45.0 mm (width) × 0.145 mm (thick), the difference is that the weight ratio of natural graphite to polyvinylidene fluoride 100: 1.5; 100: 2.0; 100: 2.5 and 100: 3.0, respectively, to obtain negative pole pieces b2-b5.
PUM
| Property | Measurement | Unit |
|---|---|---|
| adhesion strength | aaaaa | aaaaa |
| adhesion strength | aaaaa | aaaaa |
| length | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More