Contact angle measurement of plastic surfaces专利检索-无损检测材料测试专利检索查询-专利查询网

Contact angle measurement of plastic surfaces

阅读：710发布：2024-01-23

专利汇可以提供Contact angle measurement of plastic surfaces专利检索，专利查询，专利分析的服务。并且A non-destructive test is provided for determining the ability of a metal coating to adhere to the plastic substrate of a metallized plastic article comprising determining the difference between two separate contact angle values, the first being obtained by measuring the contact angle formed by a drop of liquid resting on a specimen plastic substrate prior to etching said substrate and the second being obtained by measuring the contact angle formed by a drop of liquid resting on an etched plastic substrate. Contact angle values are easily measurable parameters which indicate platability and therefore are valuable in the electroplating of plastics.，下面是Contact angle measurement of plastic surfaces专利的具体信息内容。

权利要求

2. A process according to claim 1 wherein said liquid is water.

3. A process according to claim 1 wherein said liquid is mercury.

4. A process according to claim 1 wherein said plastic substrate is selected from the group consisting of polyolefins, acrylonitrile-butadiene-styrene resins, polysulfones, polyphenylene oxides and polystyrenes.

5. A process according to claim 4 wherein said polyolefin is a normally solid propylene polymer.

6. A process according to claim 4 wherein said polyolefin is a normally solid polypropylene.

7. A process according to claim 1 wherein said contact angle measurement is obtained after etching said substrate in a bath comprising sulfuric acid, a hexavalent chromium compound and water.

8. A process according to claim 1 wherein Said contact angle is measured by a goniometer.

9. A process according to claim 1 wherein said liquid is selected from the group consisting of water and mercury, and said plastic substrate is selected from the group consisting of polyolefins and acrylonitrile-butadiene-styrene resins.

10. A process for determining the ability of an electroplated metal coating to adhere to the surface of a normally solid plastic substrate comprising the steps of: a. obtaining at least one measurement of the contact angle formed by a drop of liquid resting on the surface of said plastic substrate prior to etching the substrate; b. etching said substrate; c. obtaining at least one measurement of the contact angle formed by a drop of liquid resting on the surface of said etched plastic substrate, and d. calculating the difference between the measurements obtained from (a) and (c) to determine whether the measured value from (c) is a greater positive number than the measured value from (a).

11. In a process wherein a normally solid plastic substrate is metallized by an electroplating procedure, the step of calculating the difference between the contact angle measurements of said substrate obtained (a) prior to etching said substrate and (b) subsequent to etching said substrate to determine whether the measured value from (b) is a greater positive number than the measured value from (a).

12. A process according to claim 11 wherein said electroplating procedure comprises conditioning or etching, sensitizing, activating, applying electroless copper conductor and thereafter electroplating a finish metal.

13. A process according to claim 11 wherein said plastic substrate is selected from the group consisting of polyolefins and acrylonitrile-butadiene-styrene resins.

14. A process according to claim 13 wherein said polyolefin is a normally solid polypropylene.

说明书全文

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