Heat-resistant crosslinked resin formed body and method for producing the same, silane master batch, master batch mixture and formed body thereof, and heat-resistant product

Patent metadata

Field	Value
Publication number	US-10703894-B2
Application number	US-201816059285-A
Country	US
Kind code	B2
Filing date	Aug 9, 2018
Priority date	Feb 12, 2016
Publication date	Jul 7, 2020
Grant date	Jul 7, 2020

Abstract

A method that has a step (a) of melt-kneading 0.003 to 0.3 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a resin containing a halogen-containing resin, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; a heat-resistant crosslinked resin formed body obtained by the method, a silane master batch, a mixture and a formed body thereof, and a heat-resistant product.

First claim

The invention claimed is:

1. A method for producing a heat-resistant crosslinked resin formed body, comprising:
(a) melt-kneading 0.003 to 0.3 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a resin containing a halogen-containing resin, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch;
(b) mixing the silane master batch obtained in the step (a) with a silanol condensation catalyst, and then forming the resultant mixture; and
(c) bringing the formed body obtained in the step (b) into contact with moisture, to cause crosslinking.

2. The method for producing the heat-resistant crosslinked resin formed body described in claim 1 , wherein a content of the organic peroxide is 0.005 to 0.1 part by mass.

3. The method for producing the heat-resistant crosslinked resin formed body described in claim 1 , wherein a content of the silane coupling agent is 3 to 12.0 parts by mass.

4. The method for producing the heat-resistant crosslinked resin formed body described claim 1 , wherein a content of the silane coupling agent is 4 to 12.0 parts by mass.

5. The method for producing the heat-resistant crosslinked resin formed body described in claim 1 , wherein the silane coupling agent is vinyltrimethoxysilane or vinyltriethoxysilane.

6. The method for producing the heat-resistant crosslinked resin formed body described in claim 1 , wherein the inorganic filler is silica, aluminum hydroxide, magnesium hydroxide, calcium carbonate or antimony trioxide, or any combination of these.

7. The method for producing the heat-resistant crosslinked resin formed body described in claim 1 , wherein melt-kneading in the step (a) is performed by using an enclosed mixer.

8. A silane master batch for use in producing a master batch mixture prepared by mixing 0.003 to 0.3 part by mass of an organic peroxide, 0.5 to 400 parts by mass of an inorganic filler, and more than 2 parts by mass and 15.0 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a resin containing a halogen-containing resin, and a silanol condensation catalyst,
wherein the silane master batch is obtained by melt-kneading all or part of the resin; the organic peroxide, the inorganic filler and the silane coupling agent, at a temperature equal to or higher than a decomposition temperature of the organic peroxide.

9. A master batch mixture, comprising the silane master batch described in claim 8 and a silanol condensation catalyst.

10. A formed body, formed by introducing the master batch mixture obtained by dry-blending the silane master batch described in claim 8 and a silanol condensation catalyst, into a forming machine.

11. A heat-resistant crosslinked resin formed body, produced according to the method for producing the heat-resistant crosslinked resin formed body described in claim 1 .

12. The heat-resistant crosslinked resin formed body described in claim 11 , formed by crosslinking the halogen-containing resin with the inorganic filler through a silanol bond.

13. A heat-resistant product, comprising the heat-resistant crosslinked resin formed body described in claim 11 .

14. The heat-resistant product described in claim 13 , wherein the heat-resistant crosslinked resin formed body is a coating of an electric wire or an optical fiber cable.

Assignees

• Furukawa Electric Co Ltd

Inventors

• Nishiguchi Masaki
• Hara Hidekazu
• Matsumura Arifumi

Classifications

• H01B7/29

  Protection against damage caused by extremes of temperature or by flame {(heat dissipation or conduction H01B7/42)} · CPC title

• C08J3/247 Primary

  Heating methods · CPC title

• Y02A30/14

  Extreme weather resilient electric power supply systems, e.g. strengthening power lines or underground power cables · CPC title

• H01B3/006

  Other inhomogeneous material · CPC title

• H01B7/28

  {Protection against damage caused} by moisture, corrosion, chemical attack or weather · CPC title