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Boron, nano-montmorillonite and nitrile-butadiene rubber modified phenolic resin and preparation method thereof

A technology of nano-montmorillonite and nitrile rubber is applied in the field of three-component modified phenolic resin of boron, nano-montmorillonite and nitrile rubber and its preparation, which can solve the problems of reducing the overall heat resistance of the modified phenolic resin and the like

Inactive Publication Date: 2011-01-19
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The impact strength of the modified phenolic resin can be increased several times, but because the nitrile rubber is completely decomposed at about 420°C, the overall heat resistance of the modified phenolic resin is reduced

Method used

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  • Boron, nano-montmorillonite and nitrile-butadiene rubber modified phenolic resin and preparation method thereof
  • Boron, nano-montmorillonite and nitrile-butadiene rubber modified phenolic resin and preparation method thereof

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Embodiment Construction

[0028] The present invention is further illustrated by the following examples. However, these examples are not intended to limit the scope of the present invention.

[0029] Implementation Regulation 1

[0030] 1) Add 100 g of phenol, 10 g of boric acid, 8 g of organic montmorillonite, and 4 g of powdered nitrile rubber into a four-necked flask equipped with a mechanical stirrer, a condenser, an ultrasonic device, and a thermometer, and react ultrasonically at 100° C. for 3 hours.

[0031] 2) Add 75g of formaldehyde and 1g of magnesium oxide, heat up to 100°C and react for 2 hours.

[0032] 3) Vacuum dehydration, the vacuum degree is 0.07-0.09MPa, and the material is discharged when the temperature reaches 140-170°C.

[0033] 4) The obtained thermoplastic phenolic resin is pulverized with a pulverizer until the particle size is 200-400 mesh.

[0034] Implementation Regulation 2

[0035] 1) Add 100 g of phenol, 10 g of boric acid, and 4 g of semi-crosslinked powdered nitril...

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Abstract

The invention relates to a boron, nano-montmorillonite and nitrile-butadiene rubber modified phenolic resin and a preparation method thereof, and the boron, nano-montmorillonite and nitrile-butadiene rubber modified phenolic resin comprises the following raw materials in parts by weight: 100 parts of phenol, 60-80 parts of aldehyde, 0.5-10 parts of catalyst, 0.5-20 parts of boron-containing substance, 0.5-20 parts of nano-montmorillonite and 0.5-10 parts of nitrile-butadiene rubber. The phenolic resin is modified for three times, thereby improving the heat resistance, the toughness and the abrasive resistance of the phenolic resin and completely being capable of serving as an adhesive for friction materials.

Description

technical field [0001] The invention relates to a three-component modified phenolic resin of boron, nanometer montmorillonite and nitrile rubber and a preparation method thereof. technical background [0002] Phenolic resin is the first synthetic resin to realize industrial production in the world, and it has a history of more than 100 years. Because the molecular structure of phenolic resin contains a large number of polar groups, it forms a highly cross-linked aromatic structure after curing, so it has excellent adhesion, excellent heat resistance, unique ablation resistance and good flame retardancy. Therefore, it is widely used in aircraft and aviation fields, military equipment fields, automobiles and transportation industries, construction industries, etc. However, phenolic resin itself has some disadvantages, such as high brittleness and insufficient heat resistance in some application fields, which greatly limit its wider application. In order to improve the perfor...

Claims

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Application Information

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IPC IPC(8): C08L61/14C08L9/02C08L13/00C08L9/04C08L13/02C08K3/34C08K9/04C08G8/28
Inventor 苏志强于征田存岳喜铎陈晓农
Owner BEIJING UNIV OF CHEM TECH
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