JPS6460657A - Filler for silicone rubber - Google Patents

Filler for silicone rubber

Info

Publication number
JPS6460657A
JPS6460657A JP21527787A JP21527787A JPS6460657A JP S6460657 A JPS6460657 A JP S6460657A JP 21527787 A JP21527787 A JP 21527787A JP 21527787 A JP21527787 A JP 21527787A JP S6460657 A JPS6460657 A JP S6460657A
Authority
JP
Japan
Prior art keywords
pores
silicone rubber
filler
volume
pore
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP21527787A
Other languages
Japanese (ja)
Inventor
Yoshiaki Koga
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokuyama Corp
Original Assignee
Tokuyama Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tokuyama Corp filed Critical Tokuyama Corp
Priority to JP21527787A priority Critical patent/JPS6460657A/en
Publication of JPS6460657A publication Critical patent/JPS6460657A/en
Pending legal-status Critical Current

Links

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  • Silicon Compounds (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

PURPOSE:To obtain the title filler small in loss of transparency when added to a silicone rubber and low in hardness increase hardness, by controlling the pore volume of pores having specified pore diameters among pores of a hydrated silicic acid. CONSTITUTION:An alkali silicate (e.g., sodium silicate) is mixed with an Na2SO4 solution and ion-exchanged water and agitated and the pH of the mixture is adjusted to 2.0-2.5 by adding thereto sulfuric acid when the viscosity of single particle diameter viscosity is maximum. The mixture is filtered to obtain a hydrated silicic acid. This hydrated silic acid is washed with water until its salt content (SO3) is reduced to 0.1% or below, dried, ground and classified to obtain a filler for silicone rubber, comprising hydrated silicic acid having volume of pores of a pore radius of 50-10,000Angstrom of 3-4cc/g, volume of pores of a pore radius of 50-400Angstrom of 1-2cc/g and a volume of pores of a pore radius of 150-200Angstrom of >=0.45cc/g. A silicone rubber is filled with 25-45wt.%, based on this silicone rubber, said filler.
JP21527787A 1987-08-31 1987-08-31 Filler for silicone rubber Pending JPS6460657A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21527787A JPS6460657A (en) 1987-08-31 1987-08-31 Filler for silicone rubber

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21527787A JPS6460657A (en) 1987-08-31 1987-08-31 Filler for silicone rubber

Publications (1)

Publication Number Publication Date
JPS6460657A true JPS6460657A (en) 1989-03-07

Family

ID=16669648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21527787A Pending JPS6460657A (en) 1987-08-31 1987-08-31 Filler for silicone rubber

Country Status (1)

Country Link
JP (1) JPS6460657A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5255011A (en) * 1989-10-03 1993-10-19 Seiko Epson Corporation Thermal printer drive control apparatus and method of controlling thermal print head
US6651484B2 (en) 1999-09-23 2003-11-25 Siemens Aktiengesellschaft Device for measuring the specific density of a gaseous or liquid medium

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55116613A (en) * 1979-02-28 1980-09-08 Tokuyama Soda Co Ltd Silicic acid hydrate and manufacture thereof

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55116613A (en) * 1979-02-28 1980-09-08 Tokuyama Soda Co Ltd Silicic acid hydrate and manufacture thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5255011A (en) * 1989-10-03 1993-10-19 Seiko Epson Corporation Thermal printer drive control apparatus and method of controlling thermal print head
US5365257A (en) * 1989-10-03 1994-11-15 Seiko Epson Corporation Thermal printer and method of controlling a thermal print head
US6651484B2 (en) 1999-09-23 2003-11-25 Siemens Aktiengesellschaft Device for measuring the specific density of a gaseous or liquid medium

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