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Halogen-free hot-melt adhesive film with high metal-bond force and good fire resistance and preparing method thereof

A kind of hot melt adhesive film, flame retardant technology

Inactive Publication Date: 2018-05-29
广东莱尔新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the existing halogen-free hot-melt adhesive film improves the flame retardant performance, its metal adhesion force will be greatly reduced, and the existing technology cannot realize the simultaneous improvement of flame retardant performance and metal adhesion force

Method used

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  • Halogen-free hot-melt adhesive film with high metal-bond force and good fire resistance and preparing method thereof
  • Halogen-free hot-melt adhesive film with high metal-bond force and good fire resistance and preparing method thereof
  • Halogen-free hot-melt adhesive film with high metal-bond force and good fire resistance and preparing method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0048] For the preparation of heat-resistant coating 2, according to the proportion shown in Table 1, the saturated polyester resin A, the saturated polyester resin C, the halogen-free flame retardant A, the halogen-free flame retardant B and the filler were dispersed at a speed of 2400r / min for 2 hours, and then the isocyanate was added to disperse at a speed of 1200r / min for 30 minutes. Finally, two grindings were performed, each grinding for 30 minutes, to obtain the heat-resistant coating 2.

[0049] Step 2, coating the heat-resistant coating 2 on the polyester film 1 with a thickness of 50 μm, controlling the coating thickness of the heat-resistant coating 2 to be 20 μm, and drying in an oven at a temperature of 160° C.

[0050] Step 3, coating the adhesive metal coating 3 on the heat-resistant coating 2 with a thickness of 20 μm, controlling the coating thickness of the adhesive metal coating 3 to be 15 μm, and drying at an oven temperature of 140° C. , and after drying,...

Embodiment Y1

[0064] Embodiment Y1 makes a halogen-free hot-melt adhesive film according to the following steps:

[0065] Step 1, the preparation of heat-resistant coating 2, according to the ratio shown in Table 2, the saturated polyester resin A, the saturated polyester resin C, the halogen-free flame retardant A, the halogen-free Flame retardant B and fillers were dispersed at a speed of 2400r / min for 2 hours, then put into isocyanate and dispersed at a speed of 1200r / min for 30 minutes, and finally grinded twice, each time for 30 minutes, to obtain the heat-resistant coating Layer 2.

[0066] Step 2, coating the heat-resistant coating 2 on the polyester film 1 with a thickness of 50 μm, controlling the coating thickness of the heat-resistant coating 2 to be 20 μm, and drying at an oven temperature of 160° C. After drying, the halogen-free hot-melt adhesive film is obtained.

[0067] The above-mentioned performance test was carried out on the prepared halogen-free hot-melt adhesive fil...

Embodiment Y7

[0069] Embodiment Y7 makes the halogen-free hot-melt adhesive film according to the following steps:

[0070] Step 1, the preparation of the adhesive metal coating 3, according to the proportion shown in Table 2, the saturated polyester resin A, the saturated polyester resin B, the halogen-free flame retardant A, the halogen-free Flame retardant B and filler were dispersed at a speed of 2400r / min for 2 hours, and then put into isocyanate to disperse at a speed of 1200r / min for 30 minutes, and finally grinded twice, each time for 30 minutes, to obtain the sticky metal coating Layer 3;

[0071] For the preparation of heat-resistant coating 2, according to the proportion shown in Table 1, the saturated polyester resin A, the saturated polyester resin C, the halogen-free flame retardant A, the halogen-free flame retardant B and the filler were dispersed at a speed of 2400r / min for 2 hours, and then the isocyanate was added to disperse at a speed of 1200r / min for 30 minutes. Final...

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Abstract

The invention discloses a halogen-free hot-melt adhesive film with high metal-bond force and good fire resistance and a preparing method thereof. The halogen-free hot-melt adhesive film comprises a polyester film, a refractory coating and a metal-bond coating, wherein the refractory coating is arranged between the polyester film and the metal-bond coating; the metal-bond coating is prepared from,by mass, 50-80% of saturated polyester resin A, 5-30% of saturated polyester resin B, 4-10% of halogen-freefire retardant A, 6-10% of halogen-freefire retardant B, 0.2-2% of isocyanate and 0.5-8% of filler. The polyester film serves as a base film and is coated with the refractory coating and the metal-bond coating, the metal-bond coating arranged on the outer layer has high bonding force for metal, the refractory coating arranged on the inner layer has high fire resistance, accordingly the fire resistance is improved, and the halogen-free hot-melt adhesive film still has high metal-bond forcefor wrapped tinned flat copper wires at the same time.

Description

technical field [0001] The invention relates to the field of film manufacturing, in particular to a halogen-free hot-melt adhesive film with high metal adhesion and good flame retardancy and a preparation method thereof. Background technique [0002] FFC cable, also known as Fexibe Flat Cable (FFC), is a flexible flat cable. It is a new type of data cable made of tinned flat copper wires sandwiched between upper and lower layers of insulating materials. It is soft and flexible. Bending and folding, thin thickness, small body, simple connection, easy disassembly, and easy to solve electromagnetic shielding (EMI), etc., are currently widely used in signal transmission and boards of various electronic products such as plotters, scanners, audio, LCD appliances, etc. Interconnections are almost ubiquitous in modern electronic devices. [0003] The existing FFC cable realizes the hot-melt bonding between the insulating material and the tinned flat copper wire through the hot-melt...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J7/25C09J7/30C09J7/50C09D167/00C09D5/18C09D7/61C09D7/63C09J167/00C09J11/04C09J11/06
CPCC08K2003/026C08K2003/2224C08K2003/2241C08K2201/017C08L2201/02C08L2201/08C08L2201/22C08L2205/025C09D5/18C09D167/00C09J11/04C09J11/06C09J167/00C09J2203/326C09J2467/00C09J2467/006C09J2301/122C09J2301/304C09J2301/312C09J2301/408C08L67/00C08K13/02C08K5/526C08K3/02C08K5/34922C08K5/405C08K5/21C08K5/34928C08K3/22C08K3/346C08K3/34
Inventor 李政曾永健叶海南
Owner 广东莱尔新材料科技股份有限公司
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