| 摘要 |
PURPOSE:To provide a composite material useful as flame-retardant wall, flame- retardant floor, vibration insulator, soundproofing material, electromagnetic wave shielding material, radiation shielding material, heat insulating material, etc., by uniformly dispersing a hydrated particulate inorg. material in a specified modified low-molecular diene polymer. CONSTITUTION:A peracid or hydrogen peroxide and a carboxylic acid are reacted with a low-molecular diene polymer having an MW of 4,000-100,000, such as polybutadiene or a modified diene polymer obtd. by adding 0.1-30mol (for 100 monomer units of said polymer) of maleic anhydride or its derivative to said low-molecular diene polymer to convert double bonds in the polymer into 0.1- 30mol (for 100 double bonds) of epoxy groups, thus obtaining a modified low- molecular diene polymer. The desired composite material can be obtd. from the resulting modified polymer and a hydrated particulate inorg. material having a water content of 5wt% or above, such as calcium hydroxide.
|
