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Modified silicone resin foamed body

A technology of resin foam and silicone, which is applied in the field of modified silicone resin foam, can solve problems such as explosion, and achieve the effect of excellent touch and low burden

Inactive Publication Date: 2017-04-19
KANEKA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the curing reaction uses a hydrosilation reaction, and depending on the method of use, hydrogen gas with a high risk of explosion may be generated as a by-product when making a foam.

Method used

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  • Modified silicone resin foamed body
  • Modified silicone resin foamed body

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0165] The chemical blowing agent (C) is added to the base resin (A) and mixed well. Thereafter, a silanol condensation catalyst (B) was added and mixed well. The obtained mixture was poured into a mold, and heat-cured in an oven set at 100° C. for 90 minutes to obtain a modified silicone resin foam.

Embodiment 2

[0167] The chemical blowing agent (C) is added to the base resin (A) and mixed well. Then, a plasticizer is mixed, and finally a silanol condensation catalyst (B) is added and fully mixed. The obtained mixture was poured into a mold, and heat-cured in an oven set at 100° C. for 90 minutes to obtain a modified silicone resin foam.

Embodiment 3、4

[0169] The chemical blowing agent (C) is added to the base resin (A) and mixed well. Then, a plasticizer and a lubricant are mixed, and finally a silanol condensation catalyst (B) is added and fully mixed. The obtained mixture was poured into a mold, and heat-cured in an oven set at 100° C. for 90 minutes to obtain a modified silicone resin foam.

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Abstract

The purpose of the present invention is to provide a modified silicone resin foamed body which, while maintaining an excellent tactile sensation and excellent flexibility, can be foam moulded without generating hydrogen as a by-product. This modified silicone resin foamed body is obtained by curing a foamable liquid resin composition including 100 parts by weight of a base material resin (A), 0.1-5 parts by weight of a silanol condensation catalyst (B), and 2-40 parts by weight of a chemical foaming agent (C). The modified silicone resin foamed body is characterized in that: the base material resin (A) comprises a polymer which has hydrolysable groups bonded to silicon atoms, has, in the molecular chain thereof, at least one silicon group capable of being crosslinked as a result of forming a siloxane bond, and has a main chain formed from oxyalkylene-based units; and the foamed body has an ASKER FP hardness of 60 or less under a 25 DEG C atmosphere.

Description

technical field [0001] The present invention relates to a modified silicone resin foam obtained by curing a foamable liquid resin composition comprising a polymer having a silicon atom-bonded The hydrolyzable group has a silicon group capable of crosslinking by forming a siloxane bond (hereinafter referred to as "reactive silicon group"). Background technique [0002] As the foam of polymer compounds, foams of thermoplastic resins such as polystyrene, polyethylene, polypropylene, and polyvinyl chloride are used in the form of beads, sheets, or plates to utilize their heat insulation, lightness, cushioning, etc. The characteristics are used in the fields of civil engineering and construction, packaging, home appliances, and automobiles. All of these foams require large-scale facilities in order to form them into moldings. They are also generally rigid foams. [0003] A polyurethane foam is well known as a foam using a thermosetting resin obtained by curing and foaming a li...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J9/08C08K3/26C08K5/09C08L71/02
CPCC08G65/336C08J9/0038C08J9/08C08J2201/026C08J2203/02C08J2371/02C08J2383/12C08L71/02C08K3/26C08K5/09C08J2483/04
Inventor 片野千秋柴谷未秋
Owner KANEKA CORP
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