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Laminate and method for producing the same

A technology of laminates and sheets, applied in chemical instruments and methods, lamination, papermaking, etc., can solve the problems of low three-dimensional formability and shape dispersion, and achieve good three-dimensional formability, excellent molding processing yield, and shape. The effect of less dispersion

Active Publication Date: 2017-03-29
TORAY IND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] As described above, there has been no laminated body that has good three-dimensional moldability, less shape dispersion during molding, and excellent molding productivity.

Method used

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  • Laminate and method for producing the same
  • Laminate and method for producing the same
  • Laminate and method for producing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1）

[0079] (1) Manufacture of PPS fiber wet-laid non-woven fabric

[0080] As the unstretched PPS fiber, Toray Co., Ltd. "Torucon" (registered trademark), product number S111 with a single fiber fineness of 3.0 dtex and a cut length of 6 mm was used. Disperse the unstretched PPS fibers in water to form a papermaking dispersion, and put the papermaking dispersion into a small papermaking machine with a size of 25 cm × 25 cm and a height of 40 cm, which is provided with a handmade papermaking net with 140 meshes on the bottom. In the paper machine (manufactured by Kumagai Riki Kogyo Co., Ltd.), add water to make the total amount of the papermaking dispersion liquid 20L, and stir it sufficiently with a stirrer so that the finished product becomes 50g / m 2 . Next, the water in the above-mentioned small paper machine was drained, and the wet paper remaining on the paper machine wire was transferred to filter paper. Put the above wet paper and filter paper into the rotary dryer, repeat...

Embodiment 2）

[0087] As the stretched PPS fiber, Toray Co., Ltd. "Torucon" with a single fiber fineness of 1.0 dtex and a cut length of 6 mm, product number S301 was used. As the unstretched PPS fiber, Toray's "Torucon" with a single fiber fineness of 3.0 dtex and a cut length of 6 mm was used. " (registered trademark), product number S111. Except that 10% by mass of stretched PPS fibers and 90% by mass of unstretched PPS fibers were mixed and dispersed in water to make a papermaking dispersion, a wet-laid nonwoven fabric of PPS fibers with a thickness of 120 μm was obtained in the same manner as in Example 1. Unstretched PPS film (unstretched thermoplastic resin sheet) with a thickness of 50 μm.

[0088] The obtained wet-laid nonwoven fabric of polyphenylene sulfide fibers was laminated with an unstretched PPS film, passed through a calender (manufactured by Lirol Corporation) composed of metal rolls and paper rolls, and thermocompression-bonded to obtain a laminated body. At this time, t...

Embodiment 3）

[0090]A wet-laid nonwoven fabric of PPS fibers and an unstretched PPS film were obtained in the same manner as in Example 2, except that the mixing ratio of stretched PPS fibers and unstretched PPS fibers constituting the wet-laid nonwoven fabric of PPS fibers was changed.

[0091] The obtained wet-laid nonwoven fabric of polyphenylene sulfide fibers was laminated with an unstretched PPS film, passed through a calender (manufactured by Lirol Corporation) composed of metal rolls and paper rolls, and thermocompression-bonded to obtain a laminated body. At this time, the calendering conditions were a temperature of 130° C., a pressure of 1.3 kN / cm, and a roll rotation speed of 3 m / min, and the unstretched PPS film was passed so as to be on the paper roll side of the calender.

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Abstract

Provide a product that combines heat resistance, chemical resistance, interface adhesion, varnish impregnation, etc., and has three-dimensional three-dimensional moldability, less shape dispersion during molding, and excellent molding productivity. of stacks. On at least one surface of a thermoplastic resin sheet having a heat of crystallization measured with a differential scanning calorimeter of 10 J / g or more, layers containing polyphenylene sulfide fibers without an adhesive material are laminated using a differential scanning calorimeter. A wet-laid nonwoven fabric layer with a measured heat of crystallization of 10 J / g or more.

Description

technical field [0001] The present invention relates to a laminate having very good thermoformability, which can be used as an electrical insulation sheet for electrical equipment such as motors, alternators, and transformers. Background technique [0002] As a trend in recent years, along with reduction in size, weight and performance of electrical equipment, reduction in size and performance of insulation systems have been demanded. As one of the methods to meet this demand, it is effective to design an insulation system with a new shape, but when using a conventional insulating sheet, the physical properties and moldability of the insulating sheet are lacking, so the shape that can be realized is limited. The problem. [0003] Conventionally, it is known that a film made of polyphenylene sulfide (hereinafter also referred to as PPS) or polyimide can be used as an electrical insulating sheet requiring, for example, heat resistance of heat resistance class F or higher (ref...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B5/02B32B7/02B32B27/00H01B3/30H01B3/50H01B17/60
CPCB32B5/022B32B5/08B32B7/04B32B27/12B32B27/286B32B27/36B32B2250/02B32B2262/02B32B2262/0215B32B2274/00B32B2307/206B32B2307/306B32B2307/704B32B2307/738B32B2457/04D01F6/765D21H13/20D21H27/30B32B27/06B32B37/10B32B37/14B32B2262/00
Inventor 成子聪木村孝神谷达志栅木贵宏近藤慎一
Owner TORAY IND INC
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