Liquid crystal polymer thin film and TPX glue blocking film synchronous preparation method

A technology of liquid crystal polymer and adhesive film, which is used in flat products, photovoltaic power generation, household appliances, etc. It can solve the problems of insufficient TPX elongation and TPX film has not yet been found, and achieve low melt strength and easy film blowing. , easy peeling effect

Active Publication Date: 2020-10-30
四川东方绝缘材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disclosed in CN 110527452A is a processing method of a multi-layer co-extruded release film, which is produced by tape casting, utilizes the extensibility of PA6 and PP, and overcomes the shortcoming of insufficient elongation of TPX
At present, there is no literature report on the production of TPX film by blown film method.

Method used

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  • Liquid crystal polymer thin film and TPX glue blocking film synchronous preparation method
  • Liquid crystal polymer thin film and TPX glue blocking film synchronous preparation method
  • Liquid crystal polymer thin film and TPX glue blocking film synchronous preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032]Add LCP resin (F600BB) into the drying tank of No. 1 extruder, the drying temperature is 150°C, and the drying time is 4 hours; then add TPX resin (the mixture of RT18 and MX002, the mass ratio is 1:1) In the out-of-machine storage tank, the drying temperature is 80°C, and the drying time is 4 hours. The temperature of the No. 1 extruder is 300°C, and the extruder speed is 120rpm; the temperature of the No. Membrane, in which LCP is in the middle layer, TPX is in the surface layer, and the TPX melt is evenly distributed through the distribution block to ensure that the thickness of the two TPX layers is the same, and the pressure of the compressed air used is 0.45MPa. The obtained three-layer co-extruded film was framed, and the temperature of the hot roll was 160° C., and then wound up to obtain two three-layer co-extruded composite film rolls. The obtained three-layer co-extruded composite film roll was peeled off-line. The stripped LCP film is heat-treated in a high...

Embodiment 2

[0034] Add LCP resin (KE100 and C950, mass ratio 2:8) into the drying tank of No. 1 extruder, the drying temperature is 150°C, and the drying time is 4h; then add TPX resin (DX820) into No. 2 extruder In the storage tank, the drying temperature is 80°C and the drying time is 4h. The temperature of No. 1 extruder is 350°C, and the speed of extruder is 100rpm; Membrane, in which LCP is in the middle layer, TPX is in the surface layer, and the TPX melt is evenly distributed through the distribution block to ensure that the thickness of the two TPX layers is the same, and the pressure of the compressed air used is 0.7MPa. The obtained three-layer co-extrusion film was framed, and the temperature of the heat roll treatment was 182° C., and then wound up to obtain two three-layer co-extrusion composite film rolls. The obtained three-layer co-extruded composite film roll was peeled off-line. The stripped LCP film is heat-treated in a high-temperature furnace at a temperature of 250...

Embodiment 3

[0036] Add LCP resin (A5000) into the drying tank of No. 1 extruder, the drying temperature is 150°C, and the drying time is 4 hours; then add TPX resin (RT18) into the storage tank of No. 2 extruder, and the drying temperature is 80°C, drying time is 4h. The temperature of No. 1 extruder is 305°C, and the speed of extruder is 150rpm; Membrane, in which LCP is in the middle layer, TPX is in the surface layer, and the TPX melt is evenly distributed through the distribution block to ensure that the thickness of the two TPX layers is the same, and the pressure of the compressed air used is 0.3MPa. The obtained three-layer co-extruded film was framed, and the temperature of the hot roll was 166° C., and then rewound to obtain two three-layer co-extruded composite film rolls. The obtained three-layer co-extruded composite film roll was peeled off-line. The stripped LCP film is heat-treated in a high-temperature furnace at a temperature of 220°C.

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Abstract

The invention discloses a liquid crystal polymer thin film and TPX glue blocking film synchronous preparation method. The method is characterized by comprises the steps that: LCP resin and TPX resin are dried; three-layer co-extrusion film blowing is conducted by an extruding machine, LCP is in a middle layer and TPX is in surface layers; an obtained three-layer co-extrusion thin film is subjectedto framing and then rolling; a three-layer co-extrusion thin film coil is subjected to offline stripping, three rolling machines are configured, a middle rolling machine is for an LCP thin film, theother two rolling machines are for TPC glue blocking films; and the stripped LCP thin film is subjected to hot treatment in a high-temperature furnace, and a liquid crystal polymer thin film and the TPX glue blocking films are prepared. The prepared liquid crystal polymer thin film is high in mechanical strength, even in horizontal and vertical tensile strength, and better in folding resistance performance, and can be widely applied to the fields of high-frequency high-speed copper-clad plates, solar cell back panels, and wireless charging insulating sheets; and the synchronously produced TPXglue blocking films are good in release force, good in flexibility, and high in tensile strength, and can be used for copper-clad plate glue blocking films.

Description

technical field [0001] The invention belongs to the preparation of organic high molecular compound films, and relates to a synchronous preparation method of liquid crystal polymer films and TPX adhesive film. The liquid crystal polymer film prepared by the invention has the characteristics of high mechanical strength, uniform longitudinal and transverse tensile strength, good folding resistance, etc., and can be widely used in high-frequency and high-speed copper-clad laminates, solar battery backplanes, wireless charging insulating sheets and other fields; The TPX film produced simultaneously has the characteristics of good release force, good flexibility, and high tensile strength, and can be used as an adhesive barrier film for copper clad laminates. Background technique [0002] Liquid Crystalline Polymer (LCP for short) is a kind of special engineering plastic with excellent performance developed in the 1970s. Its structure is composed of rigid molecular chains, which c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C48/00B29C48/10B29C48/21B29C55/28B29L7/00
CPCB29C48/0017B29C48/10B29C48/21B29L2007/002Y02E10/50
Inventor 唐荣芝王志娟侯明柯希斌周柯罗春明唐安斌
Owner 四川东方绝缘材料股份有限公司
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