Modification method for surface hydrophilization of PVC plastic

A hydrophilization and modification technology, applied in the field of PVC plastic preparation, can solve the problems of droplet aggregation on the surface of plastic sheets, uneven surface modification, etc. Effect

Inactive Publication Date: 2014-10-01
YANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, in an article in "Material Protection", "Application of Coupling Agents in the Pretreatment of PVC Plastic Ni-Cu-P Plating", three coupling agents KH550, KH560, and NTC-401 were used to carry out surface affinity for PVC plastics. Water-bas

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  • Modification method for surface hydrophilization of PVC plastic
  • Modification method for surface hydrophilization of PVC plastic

Examples

Experimental program
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Effect test

Example Embodiment

[0025] Example one

[0026] Modification treatment: Put the PVC plastic samples in ethanol successively to remove the mucosa on their surfaces, soak them in a sodium hydroxide aqueous solution with a concentration of 10-30% to remove surface grease, sandpaper to roughen the surface of the samples, Soak the ferric hydroxide colloid at 55℃ for 0.5 h. After the sample is taken out and dried, it is then sensitized with an aqueous solution of 5-25 g / L stannous chloride.

[0027] The ferric hydroxide colloid used in this example is prepared by heating 40 mL of distilled water to boiling, and then adding 6 mL of ferric chloride aqueous solution with a mass percentage concentration of 1.5%, keeping it at 100° C. and reacting for 2 min.

[0028] Activation: Before copper plating, immerse and activate the sensitized sample in silver ammonia solution.

[0029] Application: Put the processed sample of the plated parts in the plating solution, and perform electroless copper plating according to ...

Example Embodiment

[0030] Example two

[0031] Modification treatment: Put the PVC plastic samples in ethanol successively to remove the mucosa on their surfaces, soak them in a sodium hydroxide aqueous solution with a concentration of 10-30% to remove surface grease, sandpaper to roughen the surface of the samples, Soak the ferric hydroxide colloid at 50℃ for 1 h. After the sample is taken out and dried, it is then sensitized with an aqueous solution of 5-25 g / L stannous chloride.

[0032] The ferric hydroxide colloid used in this example is prepared by heating 40 mL of distilled water to boiling, then adding 2.5 mL of ferric trichloride aqueous solution with a mass percentage concentration of 4.7%, and keeping the temperature at 100°C for 2 min.

[0033] Activation: Before copper plating, immerse and activate the sensitized sample in silver ammonia solution.

[0034] Application: Put the processed sample of the plated parts in the plating solution, and perform electroless copper plating according to...

Example Embodiment

[0035] Example three

[0036] Modification treatment: Put the PVC plastic samples in ethanol successively to remove the mucosa on their surfaces, soak them in a sodium hydroxide aqueous solution with a concentration of 10-30% to remove surface grease, sandpaper to roughen the surface of the samples, Soak the ferric hydroxide colloid at 45℃ for 2h. After the sample is taken out and dried, it is then sensitized with an aqueous solution of 5-25 g / L stannous chloride.

[0037] The ferric hydroxide colloid used in this example is prepared by heating 40 mL of distilled water to boiling, and then adding 1 mL of ferric trichloride aqueous solution with a mass percentage concentration of 9.2%, and reacting at 100°C for 3 min.

[0038] Activation: Before copper plating, immerse and activate the sensitized sample in silver ammonia solution.

[0039] Application: Put the processed sample of the plated parts in the plating solution, and perform electroless copper plating according to the convent...

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Abstract

A modification method for surface hydrophilization of PVC plastic relates to the technical field of PVC plastic preparation. The method comprises the following steps: conducting surface mucus membrane removing treatment on the PVC plastic with ethanol, soaking the treated PVC plastic in an alkali liquor to remove surface grease, carrying out surface polishing and coarsening, soaking the PVC plastic in ferric hydroxide colloid for modification treatment, and finally carrying out sensitization with a stannous chloride aqueous solution or a glucose aqueous solution. After modification, the PVC plastic has adsorptivity and can adsorb bibasic tin ions, so as to facilitate follow-up actification and copper plating. An obtained plating is uniform and is high in base body binding force. Moreover, environment-friendly requirements are met; through the adoption of the modification method, normal adhesion of a copper plating on the surface of the PVC plastic can be guaranteed, the surface is uniform, the electrical conductivity is high, and the adhesion capability is high.

Description

technical field [0001] The invention relates to the technical field of PVC plastic preparation, in particular to the modification technology of surface hydrophilization. Background technique [0002] Electroless copper plating technology is mainly used in printed circuit board hole metallization and plastic electroplating. Whether it is decorative or functional plastic electroplating, electroless copper plating can ensure a good conductive bottom layer. The plastic surface needs to be roughened before electroless copper plating. The purpose is to make the hydrophobic plastic surface hydrophilic and facilitate the deposition of the coating; on the other hand, it increases the contact area between the substrate and the coating to enhance the bonding force. [0003] For plastic electroplating, currently more commonly used chemical roughening systems include high chromium type roughening solution, potassium permanganate roughening solution, etc., which use the strong oxidizing p...

Claims

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Application Information

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IPC IPC(8): C23C18/20C23C18/28C23C18/30
Inventor 刘天晴韩晶晶
Owner YANGZHOU UNIV
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