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stretch film

A technology for stretching film and film, applied in the field of oriented film and stretch film, to achieve the effect of high dielectric breakdown voltage, excellent scratch resistance and small voids

Active Publication Date: 2019-07-30
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since polyethylene-2,6-naphthalate is a polar polymer, the improvement of electrical characteristics is limited

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0191] (Silicone oil attachment treatment of porous silica particles)

[0192] For 100 parts by mass of porous silica particles (average particle diameter = 2.7 μm, compressibility = 66%, pore volume = 1.5 ml / g, average pore diameter = 10 nm), silicone oil (manufactured by Shin-Etsu Silicone Co., Ltd. Base polysiloxane, KF-96-100CS) 1 mass part, then put into the mixer and stir.

[0193] (Melt kneading treatment of resin material and porous silica particles)

[0194] Two rotor disks (rotor disks) were installed on the twin-screw kneading extruder KTX-46 with vent holes made by Kobe Steel Co., Ltd. with vacuum vent holes at the resin inlet and two places. Immediately downstream of the feed vane and return vane, and furthermore, a kneading disc is arranged on the rotating scraper part, and a device having a resistance part of a reverse conveying full-flight screw is arranged on the immediately downstream side of the kneading disc. From the resin inlet, 30 parts by mass of poly(2...

Embodiment 2~20

[0198] [Examples 2-20, Comparative Examples 1-7]

[0199] Except having changed as described in Tables 1-3, the same operation as Example 1 was repeated. The evaluation results of the alignment films obtained in Examples are shown in Tables 1 and 2, and the evaluation results of the alignment films obtained in Comparative Examples are shown in Table 3.

[0200] [Table 1]

[0201] .

[0202] [Table 2]

[0203] .

[0204] [table 3]

[0205] .

[0206] Porous silica in Tables 1 to 3 refers to porous silica particles, spherical silicone refers to crosslinked silicone resin particles, and non-porous silica refers to spherical silica particles. Irg1010 in Table 1 refers to pentaerythritol tetrakis [3-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] (manufactured by Ciba Specialty Chemicals: trade name IRGANOX1010), and Irg1098 refers to N,N '-bis 3-(3'5'-di-tert-butyl-4'-hydroxyphenyl) propionyl hexamethylenediamine (manufactured by Ciba Specialty Chemicals: trade name I...

Synthetic example 1

[0208] A 22 wt % sodium silicate aqueous solution was reacted with a 37 wt % sulfuric acid aqueous solution using a mixing nozzle to obtain a silica hydrosol. The silica hydrosol was gelled for about 7 minutes to obtain silica hydrogel. The silica hydrogel was coarsely crushed to about 10 mm in diameter, hydrothermally treated at 90° C. and pH 9.0 for 5 hours, and then washed with water. Next, the first step was carried out, that is, using a vibrating fluidized bed (manufactured by Chuo Chemical Equipment Co., Ltd., trade name "Vua-15 type vibrating fluidized bed device"), drying the silica hydrogel after washing with water for 60 minutes, A silica dried to a moisture content of 7% is obtained. Then, the second step was performed, that is, adding water to the dried silica to obtain silica adjusted to a water content of 37%. Next, the third step was carried out, that is, drying was performed on a vibrating fluidized bed again for 2 hours to obtain gelled silica having a water...

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PUM

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Abstract

Provided is a syndiotactic polystyrene–based resin alignment film having excellent windability and shaving resistance, or a stretched film that is suitable for use in particular as a film capacitor and has excellent particle dispersibility, dielectric breakdown characteristics, shaving resistance, and handling properties including windability. Specifically, the stretched film comprises a resin composition that contains a syndiotactic styrene–based polymer and also contains porous particles having an average particle diameter of 0.5–5.0 µm, the content of the porous particles being 0.01–3 mass% relative to the mass of the resin composition. The stretched film satisfies either of the following conditions: (1) the resin composition contains a silicone oil, with the content of the silicone oil being 0.1–3 mass% relative to the mass of the porous particles; or (2) the porous particles are porous silica particles having an average particle diameter A of 0.5–5 µm and a di-n-butylamine adsorption (DBA) value of 200 millimoles / kg or less.

Description

technical field [0001] The first present invention relates to an oriented film comprising a styrenic polymer having a syndiotactic structure, and in more detail, relates to an oriented film comprising a styrenic polymer having a syndiotactic structure having improved windability and scratch properties. Stretching film. [0002] The second present invention relates to a stretched film comprising a resin composition in which the dispersibility of porous silica particles is improved. In more detail, it relates to a stretched film which is particularly suitable for film capacitors and has improved handleability such as windability, scratch resistance (scratch resistance), and dielectric breakdown characteristics including a resin composition, the resin composition , the dispersibility of porous silica particles in polystyrene resin with syndiotactic structure is improved. Background technique [0003] Conventionally, film capacitors have been manufactured by winding or laminat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L25/04C08L71/12C08L83/04
CPCC08J5/18C08L25/04C08L71/12C08L83/04
Inventor 羽田正纪吉田哲男
Owner PANASONIC CORP
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