Manufacturing method of all-dimensional ultra-soft conductive foam
By combining nano-silver wire solution with polyurethane foam through ultrasonic stirring and baking, the problems of expensive and insufficient performance of conductive foam manufacturing equipment have been solved, realizing low-cost and high-efficiency all-round conductive foam manufacturing.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-30
- Publication Date
- 2026-03-10
AI Technical Summary
Existing conductive foam manufacturing equipment is expensive, the manufacturing process is complex, and the shielding effect and conductivity are poor, making it difficult to meet the needs of electrical products.
By combining a nano-silver wire solution with polyurethane foam and using ultrasonic stirring and baking processes, conductive molecules are introduced into the foam to form an all-around conductive foam. Common equipment such as measuring cups, stirring containers, ultrasonic stirring equipment, and ovens can be used to simplify the operation.
It reduces manufacturing costs, simplifies operation, and produces conductive foam with excellent all-around electronic shielding and high conductivity, meeting the performance requirements of electrical products.
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the field of conductive foam, in particular to a manufacturing method of all-around super-soft conductive foam. BACKGROUND
[0002] Conductive foam is a composite material that combines elasticity and electrical conductivity. It combines the cushioning properties of traditional foam with the electrical conductivity of metal materials. It can reflect and absorb electromagnetic waves through its surface conductive layer, achieving electromagnetic shielding effect. Specifically, when electromagnetic waves contact the conductive foam, part of them are reflected back, and the other part is absorbed by the conductive network inside the material and converted into heat energy, reducing electromagnetic interference. Currently, conductive foam is widely used in various electrical products and equipment.
[0003] The existing conductive foam is usually made of high-molecular foaming substrate (such as polyurethane PU, silicone or EPDM rubber) combined with conductive coating (such as silver, nickel, copper, carbon, etc.). It generally includes nickel / copper coated foam, silver / copper coated foam, carbon / graphite conductive foam, and conductive silicone foam.
[0004] However, the existing conductive foam has the following defects in the production process: 1. The production equipment is precise and expensive, and the production cost is high; 2. The production process is complex and not easy to replicate; 3. The all-around shielding effect and electrical conductivity of the produced conductive foam are poor, which cannot meet the production needs of electrical products. SUMMARY
[0005] To solve the above problems, the present application provides a manufacturing method of all-around super-soft conductive foam. The method is to immerse the super-soft foam material such as polyurethane foam in a container with nano-molecular solution, stir with ultrasonic wave, and then dry with an oven to make the conductive molecules enter the foam, thus producing the material with electrical conductivity. The method not only has low production cost and simple operation, but also produces all-around conductive foam with good all-around electronic shielding effect and high electrical conductivity, which can meet the performance requirements of electrical products and improve product efficiency.
[0006] According to one aspect of the present application, a manufacturing method of all-around super-soft conductive foam is provided, comprising the following steps: S1: Mix the nano-silver wire solution with a concentration of 10 mg / L with anhydrous ethanol at a ratio of 1:1 to form a mixed solution; S2: Use an ultrasonic stirring device to stir and disperse the mixed solution to form a mixed liquid; S3: Place the polyurethane foam in the mixed liquid and stir it with a stirring device; S4: After the stirring is finished, the polyurethane foam is taken out and placed on a jig plate; S5: The jig plate and the polyurethane foam thereon are baked, and the polyurethane foam is dried to form a conductive foam semi-finished product; S6: The conductive foam semi-finished product is subjected to the processing in steps S1-S5 for 5 cycles to form a full-range conductive foam.
[0007] In some embodiments, in step S1, before the proportioning, the nano-silver wire solution is manually shaken or stirred at a low speed. This is beneficial in that it ensures the uniformity of the nano-silver wire solution.
[0008] In some embodiments, in step S2, the proportioned liquid is placed in a stirring container before being subjected to the stirring and dispersion treatment. This is beneficial in that it describes the preparatory work of the stirring and dispersion treatment of the proportioned liquid.
[0009] In some embodiments, in step S2, the stirring time is not less than 3 minutes. This is beneficial in that it describes the suitable time for the stirring and dispersion treatment of the proportioned liquid.
[0010] In some embodiments, in step S3, the stirring time is not less than 10 minutes. This is beneficial in that it describes the suitable time for the stirring of the mixed liquid.
[0011] In some embodiments, in step S4, the polyurethane foams are placed in parallel on the jig plate. This is beneficial in that it describes the manner of placing the polyurethane foams on the jig plate.
[0012] In some embodiments, in step S4, the jig plate is made of PET material. This is beneficial in that it describes the suitable material of the jig plate, and the use of PET material to make the PET material can withstand the subsequent baking work.
[0013] In some embodiments, in step S5, the jig plate is first placed on a trolley, and then the trolley is pushed into an oven for baking. This is beneficial in that it describes the specific operation and equipment for baking the jig plate and the polyurethane foam thereon.
[0014] In some embodiments, in step S5, the baking temperature is 60±10℃. This is beneficial in that it describes the suitable temperature range for baking the polyurethane foam.
[0015] In some embodiments, in step S5, the baking time is 60 minutes. This is beneficial in that it describes the suitable time for baking the polyurethane foam. DETAILED DESCRIPTION
[0016] The application will be further described in detail below.
[0017] The manufacturing method of the omnibearing super-soft conductive foam in the present application comprises several main steps, which are described as follows.
[0018] S1: The nano-silver wire solution is proportioned with the anhydrous ethanol using a measuring cup to form a proportioned liquid.
[0019] In this step, the concentration of the nano-silver wire solution is 10 mg / L, and the proportion of the two in the proportioning is 1:1.
[0020] Preferably, before proportioning, the nano-silver wire solution can be manually shaken or low-speed stirred to ensure the uniformity of the nano-silver wire solution.
[0021] S2: The proportioned liquid is stirred and dispersed using an ultrasonic stirring device to form a mixed liquid.
[0022] Preferably, the proportioned liquid is first placed in a stirring container and then subjected to dispersion treatment.
[0023] Preferably, the stirring time is not less than 3 minutes.
[0024] S3: The polyurethane foam is placed in the mixed liquid and stirred again.
[0025] Preferably, the stirring is performed using a stirring device.
[0026] Further preferably, the stirring time is not less than 10 minutes.
[0027] S4: After the stirring is completed, the soaked polyurethane foam is taken out of the container and placed on a jig plate.
[0028] Preferably, the polyurethane foams are placed in parallel on the jig plate.
[0029] Further preferably, the jig plate is made of PET material.
[0030] S5: The jig plate and the polyurethane foam thereon are baked, and after the polyurethane foam is dried, the conductive molecules enter the foam to form a conductive foam semi-finished product.
[0031] Preferably, the jig plate is first placed on a trolley and then baked.
[0032] Further preferably, the trolley is pushed into an oven for baking, thereby realizing the drying of the polyurethane foam.
[0033] Preferably, the baking temperature condition is 60±10℃, and the time is 60 minutes.
[0034] S6: the conductive foam semi-finished product is cycled for 5 times of the above-mentioned steps S1-S5, and the required omnidirectional conductive foam is obtained.
[0035] The application provides a manufacturing method of omnidirectional super-soft conductive foam, and mainly has the following beneficial effects: 1. Common equipment such as a measuring cup, a stirring container, an ultrasonic stirring device, a trolley and an oven is used to complete the production of the conductive foam, and the production cost is reduced.
[0036] 2. The production of the conductive foam can be manually completed by using the above-mentioned equipment, and the operation is simple and convenient, and easy to replicate. 3. The formed omnidirectional conductive foam has good omnidirectional electronic shielding effect and high conductivity, can meet the performance requirements of electrical products, and improves the benefits of products.
[0037] The above-mentioned is only some embodiments of the application. For ordinary skilled in the art, without departing from the inventive concept, several modifications and improvements can be made, which belong to the protection scope of the application.
Claims
1. A method for manufacturing an omnidirectional ultra-soft conductive foam, characterized in that: The method comprises the following steps S1: a solution of nanometer silver wire with a concentration of 10 mg / L is matched with anhydrous ethanol at a ratio of 1:1 to form a matching liquid; S2: the matching liquid is stirred and dispersed using an ultrasonic stirring device to form a mixed liquid; S3: the polyurethane foam is placed in the mixed liquid and stirred using a stirring device; S4: after the stirring is completed, the polyurethane foam is taken out and placed on a jig plate; S5: the jig plate and the polyurethane foam thereon are baked, and the polyurethane foam is dried to form a conductive foam semi-finished product; S6: the conductive foam semi-finished product is subjected to the processing in steps S1-S5 for 5 cycles to form a full-range conductive foam.
2. The method for manufacturing a full-range ultra-soft conductive foam according to claim 1, wherein: In step S1, before matching, the nanometer silver wire solution is manually shaken or stirred at a low speed.
3. The method of claim 1, wherein the method further comprises: In step S2, the matching liquid is placed in a stirring container before being subjected to stirring and dispersion treatment. 4. The method of claim 1, wherein the method further comprises: In step S2, the stirring time is not less than 3 minutes.
5. The method of claim 1, wherein the method further comprises: In step S3, the stirring time is not less than 10 minutes.
6. The method of claim 1, wherein the method further comprises: In step S4, the polyurethane foams are placed in parallel on the jig plate.
7. The method of claim 1, wherein the method further comprises: In step S4, the jig plate is made of PET material. 8. The method of claim 1, wherein the method further comprises: In step S5, the jig plate is first placed on a trolley, and then the trolley is pushed into an oven for baking.
9. The method of claim 1, wherein the method further comprises: In step S5, the baking temperature is 60±10℃. 10. The method of claim 1, wherein the method further comprises: In step S5, the baking time is 60 minutes.