Abstract: A manufacturing method and a manufacturing device for integrally forming a waterproof structure for a 3C electronic product, and the method includes the following steps: a. feeding a predetermined amount of a solid silicone raw material into a sprue; b. extruding the solid silicone raw material in the sprue, so that the solid silicone raw material flows into, through a silicone inlet channel, a waterproof structure cavity in a mold in which a product is placed; and c. heating the flowable solid silicone with a high temperature in the mold to have a vulcanization reaction, and finally to integrally form a silicone waterproof structure on the product. The waterproof structure is of a great waterproof performance, good material toughness, small wear when being used repeatedly, and great fatigue resistance.

Abstract: Disclosed are a plastic-metal composite material and a manufacturing method thereof. The method including: S1. injection molding: subjecting a mixture of a metal powder and a binder to injection molding to form a metal structural member of a preset shape; S2. degreasing and sintering: subjecting the metal structural member to degreasing and sintering to remove the binder, to form 0.5-2 ?m micron-sized micropores on a surface of the metal structural member; S3. nanocrystallization: on the basis of the micron-sized micropores, forming 20-40 nm nano-sized micropores by etching with a chemical etching reagent; and S4. injection molding: placing the metal structural member filled with a chemical reagent in an injection mold for injection molding to be integrated with a plastic. The composite material is a product manufactured according to the method. The application solves the problem that the metal structural member is difficult to be molded.