Polymer-based substrate and method for the production thereof

A technology of matrix polymer and polymer material, used in polyamide coatings, devices for coating liquids on surfaces, coatings, etc., can solve the problems of insufficient paint adhesion, insufficient powder paint coverage, etc., and achieve process stability Effect

Pending Publication Date: 2020-07-24
ENSINGER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The problem with the methods of the prior art is that, after powder coating, insufficient powder paint coverage, insufficient paint adhesion and / or bubbling
These fillers may thus have a negative impact on certain physical properties such as mechanical strength or thermal conductivity, but may also have a negative impact on material costs

Method used

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  • Polymer-based substrate and method for the production thereof
  • Polymer-based substrate and method for the production thereof
  • Polymer-based substrate and method for the production thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0196] Embodiment 1 (reference):

[0197] In this example, using something like figure 1 A solid extruded insulation profile 10 of flat middle section shown in A, wherein the insulation profile is made of a polymer material (polymer blend of PA66 and PPE with similar weight fractions) and contains 10% by weight of glass fibers (GF). PA66 is used here as the first polymer and forms a continuous phase in a blend with PPE which is dispersed discontinuously in microscopic fine droplets.

[0198] A flat test piece is then milled from this profile, which is suitable for measuring the specific surface resistance.

[0199] Table 1 gives the measured values ​​of the specific surface resistance measured under various conditions.

Embodiment 2

[0200] Embodiment 2 (reference):

[0201] In this example, a similar figure 1 The solid extruded insulating profile 10 of the flat middle section shown in A, wherein the insulating profile is manufactured by Ensinger GmbH Made of LO polymer material. It is a polymer blend made of PA66 and PPE (in similar weight fractions) with a glass fiber (GF) content of 20% by weight. PA66 is used here as the first polymer and forms a continuous phase in a blend with PPE which is dispersed discontinuously in micron-sized droplets.

[0202] A flat test piece is then milled from this profile, which is suitable for measuring the specific surface resistance.

[0203] Table 1 gives the measured values ​​of the specific surface resistance measured under various conditions. Due to the higher proportion of glass fibers, the specific surface resistance is slightly increased compared to the measured value of Example 1.

Embodiment 3

[0204] Embodiment 3 (reference):

[0205] In this example, again using a figure 1 The solid extruded insulating profile 10 of the flat middle section shown in A, wherein the insulating profile REG Polymer Materials by Ensinger GmbH Made of 66GF. Here, PA66 was used as the first polymer and reinforced with glass fibers (GF) in an amount of 25% by weight. A flat test piece is then milled from this profile, which is suitable for measuring the specific surface resistance.

[0206] Table 1 gives the measured values ​​of the specific surface resistance measured under various conditions. Due to the different composition of the polymer material (without PPE), especially due to the higher proportion of (hygroscopic) PA66, the specific surface resistance is further reduced compared to the measured values ​​of Examples 1 and 2.

[0207] The paint coverage of the dried and powder-coated profile was only about 56% and was therefore clearly insufficient. The paint tests were carried...

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Abstract

The invention relates to a polymer-based substrate which is, in particular, electrostatically coatable, the substrate having a substrate main body produced using a polymer material, and a coating applied to a surface region of the substrate main body. The polymer material comprises a first polymer and the coating comprises a matrix polymer and an additive which is dispersed in the matrix polymer,reduces the surface resistance and is added in such a quantity that the specific surface resistance of the coating is approximately 1010 ohms or less. The matrix polymer is selected such that it is compatible with the first polymer.

Description

technical field [0001] The invention relates to a polymer-based substrate which can be electrostatically coated, in particular, and a method for its production. Background technique [0002] Electrostatic coating, in particular powder coating of substrates, is of great importance in many fields of application, not only for decorative purposes, but especially also as corrosion protection. [0003] For example, a substrate is considered to be good powder coatable if the following points are met: [0004] a) Good powder attraction and uniform powder coverage when spraying electrostatically charged paint powders onto grounded or charged substrates; [0005] b) correct fixation, e.g. by baking, melting, sintering, thermal curing of the lacquer, in particular without blisters or formation of pores within the lacquer layer or between the substrate and the lacquer layer; [0006] c) Strong adhesion of the paint layer to the substrate to prevent delamination, peeling or chipping of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/044C08J5/00C08L77/06C08L71/12C08K7/14C08J7/043C08J7/048
CPCC08J2377/06C08J2477/02C08J2477/06C09D177/06C08K7/14C08L77/06B05D5/06B05D7/02B05D1/04B05D1/06B05D3/005C08J2371/12C08J2471/12C09D177/02C08K3/04C08K3/042C08K3/08C08K7/06C08K3/34C08K2201/001C08K2003/2296C09D5/4461C09D5/03C09D7/61C08J7/0427Y02P20/582C08J7/048C08J7/043C08J7/044C08L71/12C08L77/02C08J2379/08C08J2479/08C09D5/24C09D177/10
Inventor 米夏埃尔·莫勒
Owner ENSINGER
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