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Method for preparing aluminum-containing phenolic resin

A technology of phenolic resin and alumina, applied in the chemical field, can solve the problems of high price, high content of impurity free phenol, high brittleness, etc., and achieve the effect of cost reduction

Inactive Publication Date: 2012-01-25
张利农
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Ordinary pad-shaped phenolic resin is limited by technology and raw materials, high price, high brittleness, and high content of free phenolic impurities. Therefore, it is necessary to modify thermoplastic phenolic resin. At present, the modification of phenolic resin at home and abroad, There are polymer plastic modification, boron modification, silicone modification, and rubber modification, but relatively speaking, some of these technologies are physical mixing, and some have complicated processes and high prices, and their practical applications are affected by various factors. restrict

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  • Method for preparing aluminum-containing phenolic resin
  • Method for preparing aluminum-containing phenolic resin

Examples

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Effect test

Embodiment 1

[0015] Embodiment 1: a kind of preparation method of aluminum-containing phenolic resin, its component proportion is calculated by weight parts, comprises the following processing steps:

[0016] (1) 100 parts of phenol, 50 parts of formaldehyde, and 0.5 parts of oxalic acid are reacted in a reactor with a stirring device to obtain a thermoplastic phenolic resin; the stirring speed is 60 revolutions per minute, and the reaction temperature is 50~120°C, the reaction time is 5 hours;

[0017] (2) Heat the thermoplastic phenolic resin to 100° C., add 6 parts of alumina, and stir for 30 minutes at a speed of 60 rpm to dissolve;

[0018] (3), continue to stir after dissolving and carry out condensation reaction, evacuate and remove moisture content while reacting, blowing, cooling at normal temperature is aluminum-containing phenolic resin block, and described vacuum degree is 800mm mercury column, and the reaction time is 2 hours; the reaction temperature during the condensation ...

Embodiment 2

[0019] Embodiment two: a kind of preparation method of aluminum-containing phenolic resin, its component ratio is calculated by weight parts, comprises following process steps:

[0020] (1) 100 parts of phenol, 80 parts of formaldehyde, and 1 part of hydrochloric acid are reacted in a reactor with a stirring device to obtain a thermoplastic phenolic resin; the stirring speed is 100 rpm, and the reaction temperature is 50~120°C, the reaction time is 3 hours;

[0021] (2) After heating the thermoplastic phenolic resin to 160°C, add 30 parts of aluminum hydroxide, and stir for 10 minutes at a speed of 120 rpm to dissolve;

[0022] (3), after dissolving, continue to stir and carry out condensation reaction, vacuumize and remove moisture content while reacting, blowing, be cooled at normal temperature to be aluminum-containing phenolic resin, described vacuum degree is 900mm mercury column, and the reaction time is 5 hours; The reaction temperature during the condensation reaction...

Embodiment 3

[0023] Embodiment three: a kind of preparation method of aluminum-containing phenolic resin, its component ratio is calculated by weight parts, comprises the following processing steps:

[0024] (1) 100 parts of phenol, 65 parts of formaldehyde, and 0.2 parts of oxalic acid are reacted in a reactor with a stirring device to obtain a thermoplastic phenolic resin; the stirring speed is 80 rpm, and the reaction temperature is 50~120°C, the reaction time is 4 hours;

[0025] (2) Heat the thermoplastic phenolic resin to 120°C, add 20 parts of aluminum oxide or aluminum hydroxide, and stir for 20 minutes at a speed of 80 rpm to dissolve;

[0026] (3), after dissolving, continue to stir and carry out condensation reaction, vacuumize and slough moisture content while reacting, blowing, be cooled at normal temperature to be aluminum-containing phenolic resin, described vacuum degree is 850mm mercury column, and the reaction time is 4 hours; The reaction temperature during the condensa...

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Abstract

The invention relates to a method for preparing an aluminum-containing phenolic resin. The method comprises the following process steps of: reacting phenol, formaldehyde, oxalic acid or hydrochloric acid in a reaction kettle provided with a stirring device to obtain a thermoplastic phenolic resin; heating the thermoplastic phenolic resin, adding alumina or aluminium hydroxide into the heated resin and stirring the mixture to dissolve; and continuing stirring, performing a condensation reaction, vacuumizing during the reaction to remove water and cooling at normal temperature to obtain the aluminum-containing phenolic resin. Linking bonds are added in the molecular structure of the aluminum-containing phenolic resin prepared by the invention, so that binding power is enhanced and cost is lowered relatively; and the aluminum-containing phenolic resin serving as a bonding agent can be widely applied to bakelite powder, refractory materials, grinding wheels, molding sand cast (non-solventtype) brake pads, friction materials, automobile interior felts and the like without changing using amount or operation processes.

Description

technical field [0001] The invention relates to an aluminum-containing phenolic resin, in particular to a preparation method of an aluminum-containing phenolic resin, belonging to the field of chemistry. Background technique [0002] Thermoplastic phenolic resin is widely used in bakelite powder, grinding wheel, friction material, refractory material, automotive interior felt, sand casting and other industries. It is a wide range of basic polymer materials. [0003] Ordinary pad-shaped phenolic resin is limited by technology and raw materials, high price, high brittleness, and high content of free phenolic impurities. Therefore, it is necessary to modify thermoplastic phenolic resin. At present, the modification of phenolic resin at home and abroad, There are polymer plastic modification, boron modification, silicone modification, and rubber modification, but relatively speaking, some of these technologies are physical mixing, and some have complicated processes and high pri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G8/28C08G8/10C09J161/14
Inventor 张利农
Owner 张利农