Halogen-free flame retardant hot-melt adhesive film used on high-frequency transmission wire rod
A high-frequency transmission, hot-melt adhesive film technology, applied in the direction of heat-activated films/sheets, adhesives, film/sheet-like adhesives, etc. Influence of transmission performance, low temperature resistance and scratch resistance, etc., to achieve good halogen-free flame retardant insulation and high temperature resistance, stable structure, and improved scratch resistance.
Inactive Publication Date: 2018-05-04
广东莱尔新材料科技股份有限公司
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Problems solved by technology
[0002] High-frequency cables are wires used to transmit high-frequency signals. In the existing processing technology of high-frequency transmission wires, in order to enhance the safety performance of high-frequency transmission wires, it is usually further improved on the high-frequency transmission wires themselves. It achieves the performance of flame-retardant insulation, but it has a certain impact on the transmission performance of high-frequency transmission wires; in addition, it is usually wrapped with aluminum foil Mylar to achieve the function of shielding and protection, but its effect is not ideal. Its high temperature resistance and scratch resistance are low, and it cannot have the effect of flame retardancy, and cannot achieve stable shielding and protection for high-frequency transmission wires
Method used
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[0019] Example - a halogen-free flame-retardant hot-melt adhesive film used on high-frequency transmission wires, the adhesive layer is prepared according to the different raw material components and proportions in the following table, and then the adhesive layer is coated on the insulating film Layer to obtain different halogen-free flame-retardant hot-melt adhesive films; and conduct the following performance tests:
[0020] (1) Appearance
[0021] After the adhesive layer is coated on the surface of the insulating film layer, check whether there are bubbles, pinholes, or particles on the adhesive layer.
[0022] (2) back adhesive
[0023] Use the adhesive layer of the finished adhesive film that has been coated on the PET surface or the PI surface to be evenly pasted on the non-corona surface of PET or the non-corona surface of PI. The size of the sample is 50mmX200mm, here Place a 5kg weight flatly on the sample, and test the peeling force of the sample after placing it ...
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Abstract
The invention provides a halogen-free flame retardant hot-melt adhesive film used on a high-frequency transmission wire rod. The halogen-free flame retardant hot-melt adhesive film comprises an insulating thin film layer and an adhesive layer, and is characterized in that the adhesive layer comprises the following raw materials in percentages by weight: 43% to 64% of saturated polyester resin A with the softening point of 85 to 95 DEG C, 5% to 10% of saturated polyester resin B with the softening point of 105 to 120 DEG C, 25% to 30% of a halogen-free flame retardant agent A, 5% to 10% of a halogen-free flame retardant B, 0.2% to 2% of isocyanate and 0.8% to 5% of a filler. According to the halogen-free flame retardant hot-melt adhesive film provided by the invention, self adhesion can berealized at the temperature of 100 to 130 DEG C, and the adhesive film is stabler in structure and simple and convenient to process and has good halogen-free flame retardant insulation and high-temperature resistance.
Description
technical field [0001] The invention relates to the technical field of high-frequency transmission wires, in particular to a halogen-free flame-retardant hot-melt adhesive film used on high-frequency transmission wires. Background technique [0002] High-frequency cables are wires used to transmit high-frequency signals. In the existing processing technology of high-frequency transmission wires, in order to enhance the safety performance of high-frequency transmission wires, it is usually further improved on the high-frequency transmission wires themselves. It achieves the performance of flame-retardant insulation, but it has a certain impact on the transmission performance of high-frequency transmission wires; in addition, it is usually wrapped with aluminum foil Mylar to achieve the function of shielding and protection, but its effect is not ideal. Its high temperature resistance and scratch resistance are low, and it cannot have the effect of flame retardancy, and cannot ...
Claims
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IPC IPC(8): C09J7/35C09J7/20C09J167/00C09J11/04C09J11/06
CPCC08K2003/2224C08K2003/2227C08K2003/387C08L2201/02C08L2201/08C08L2201/22C08L2205/025C09J11/04C09J11/06C09J167/00C09J2301/122C09J2301/312C09J2467/006C09J2479/086
Inventor 李政叶海南曾永健
Owner 广东莱尔新材料科技股份有限公司
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