Modified phenolic resin, preparation method thereof, and modified phenolic resin plate

A phenolic resin and modification technology, applied in the field of polymer material modification, can solve the problem that the performance of phenolic resin sheet cannot meet the requirements, and achieve the effects of enhancing comprehensive physical properties, improving impact resistance, and increasing decomposition temperature

Active Publication Date: 2019-04-19
CHINA SHENHUA ENERGY CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a modified phenolic resin and a preparation method thereof, acid corrosion-resistant high-temperature abrasion-resistant modified phenolic resin sheet for the problem that the performance of the existing phenolic resin sheet cannot meet the requirements. The non-toxic phenolic resin sheet can significantly improve the heat resistance, corrosion resistance and mechanical properties of the phenolic resin, while maintaining a large anti-friction coefficient

Method used

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  • Modified phenolic resin, preparation method thereof, and modified phenolic resin plate
  • Modified phenolic resin, preparation method thereof, and modified phenolic resin plate
  • Modified phenolic resin, preparation method thereof, and modified phenolic resin plate

Examples

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preparation example Construction

[0068] In some examples of the present invention, the preparation method of modified phenolic resin as described above, comprises the steps:

[0069] 1) Contact phenyltrimethoxysilane, methyltrimethoxysilane, basic catalyst potassium carbonate, styrene solvent and water to react in proportion, then add molybdenum compound to the reaction system and stir and mix, preferably stirring time 1 ~2h, obtain silicon molybdenum modifier; In a preferred embodiment, step 1) in phenyltrimethoxysilane, methyltrimethoxysilane, basic catalyst potassium carbonate and styrene solvent and water contact and heat The reaction is carried out under certain conditions, the reaction temperature is 75-90° C., and the heating and reflux time is 12-24 hours.

[0070] 2) Stir and mix the obtained silicon-molybdenum modifier and the nano-montmorillonite-phenolic resin in proportion, preferably stirring and mixing for 0.5 to 1 hour, and then solidify at a temperature of 140 to 160° C., preferably curing fo...

Embodiment 1

[0086] (1) Preparation of silicon-molybdenum modifier: 10 mass parts of phenyltrimethoxysilane, 10 mass parts of methyltrimethoxysilane, 1 mass part of alkaline catalyst potassium carbonate and 20 mass parts of styrene solvent at normal temperature Stir and mix evenly, and slowly add 10 parts by mass of water. After the addition of water is completed, heat up to 80°C and heat to reflux for 20 hours; Stir for 2h to obtain silicon molybdenum modifier.

[0087] (2) Preparation of nano-montmorillonite-phenolic resin solution: add 40 parts by mass of formaldehyde and 20 parts by mass of phenol into a three-necked bottle, add 40 parts by mass of nano-montmorillonite and stir and mix for 1 hour; adjust the pH value of the reaction system by ammonia water Between 7 and 8, heat up to 80°C for reaction. After 1.5 hours of reaction, dehydrate under reduced pressure at 75°C and a vacuum of 8Kpa; after the dehydration amount is stable, prepare a nano-montmorillonite-phenolic resin solution...

Embodiment 2

[0091] (1) Preparation of silicon molybdenum modifier: 15 mass parts of phenyltrimethoxysilane, 5 mass parts of methyltrimethoxysilane, 1 mass part of alkaline catalyst potassium carbonate and 25 mass parts of styrene solvent at normal temperature Stir and mix evenly, and slowly add 15 parts by mass of water. After adding water, raise the temperature to 90°C and heat to reflux for 15 hours; After mixing for 1.5 hours, the silicon molybdenum modifier is obtained.

[0092] (2) Preparation of nano-montmorillonite-phenolic resin solution: Add 50 parts by mass of formaldehyde and 25 parts by mass of phenol into a three-necked bottle, add 25 parts by mass of nano-montmorillonite and stir and mix for 0.5h, adjust the pH value of the reaction system with ammonia water Between 7 and 8, heat up to 90°C for reaction; after 1.5 hours of reaction, dehydrate under reduced pressure at 80°C and a vacuum of 8Kpa, and prepare a nano-montmorillonite-phenolic resin solution after the dehydration ...

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Abstract

The invention belongs to the technical field of polymer material modification, and provides a modified phenolic resin, a preparation method thereof, and a modified phenolic resin plate. The modified phenolic resin is prepared by reacting 20-30 wt% of a silicon-molybdenum modifier and 70-80 wt% of nano-montmorillonite-phenolic resin, and the sum of the weight percentages of the above two raw materials is 100 wt%; and the silicon-molybdenum modifier adopts a compound prepared by reacting 10-15 wt% of phenyltrimethoxysilane, 5-10 wt% of methyltrimethoxysilane, 0.5-1 wt% of a basic catalyst potassium carbonate, 20-25 wt% of a styrene solvent, 10-15 wt% of water and 35-50 wt% of molybdenum, and the sum of the weight percentages of all above raw materials is 100 wt%. The heat resistance, the corrosion resistance and the mechanical properties of phenolic resin are significantly improved, and the large anti-friction coefficient is kept.

Description

technical field [0001] The invention belongs to the technical field of polymer material modification, and in particular relates to a modified phenolic resin and a preparation method thereof, and a modified phenolic resin board material resistant to acid corrosion and high temperature abrasion. Background technique [0002] Taking advantage of the "high aluminum and gallium-rich" advantages of the Zhungeer coalfield, the technology of extracting metallurgical-grade alumina using the "one-step acid dissolution method" of circulating fluidized bed fly ash has been reported. In the process stage of the "one-step acid dissolution method", some working conditions are relatively harsh: such as high-velocity liquid-solid two-phase working conditions (such as internal baffles in tanks, etc.), acid-containing liquid-solid two-phase working conditions (such as Sedimentation and separation tank), acid-containing high temperature and high pressure working conditions (such as dissolution ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L61/10C08L83/04C08K3/34C08K3/30C08K3/16
CPCC08K2003/3009C08L61/06C08L83/04C08K3/34C08K3/30C08K3/16
Inventor 郭昭华赵宇航高莹王永旺李超赵飞燕郭志峰徐靓张玮琦
Owner CHINA SHENHUA ENERGY CO LTD
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