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Rosin modified phenolic resin with good heat resistance and preparation process thereof

A technology for modifying phenolic resin and rosin, which is applied in the field of rosin-modified phenolic resin and its preparation, can solve problems such as the need to improve mechanical properties, poor heat resistance, etc., so as to improve high temperature resistance and thermal stability, improve quality and The effect of improving quality and heat resistance

Inactive Publication Date: 2021-05-11
刘伟俊
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing phenolic resin itself also has shortcomings, such as relatively poor heat resistance and mechanical properties that need to be improved.

Method used

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  • Rosin modified phenolic resin with good heat resistance and preparation process thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0027] A rosin-modified phenolic resin with good heat resistance, consisting of phenolic resin microspheres and rosin whose mass is 1.2 times its mass, pentaerythritol with a mass of 5% of rosin, 7% neopentyl glycol, and an appropriate amount of modified serpentine Composition of stone powder.

[0028] The preparation method of phenolic resin microsphere comprises the following steps:

[0029] Weigh phenolic resin, diisopropyl azodicarboxylate, octylphenol polyoxyethylene ether and acetone respectively according to the weight ratio of 1:0.04:0.13:2; after ultrasonic stirring for 30min, let it stand at 35°C for 20h , the gained is recorded as the mixed component; then dropwise add dihydroxy polydimethylsiloxane whose volume fraction is 0.2% to the mixed component while stirring at a rate of 30 drops / min; after the addition is completed, continue Mechanically stir the obtained mixture for 10 minutes; then cool it to room temperature, collect the spherical particles floating on ...

Embodiment 2

[0044] A rosin-modified phenolic resin with good heat resistance, consisting of phenolic resin microspheres, rosin whose mass is 2.5 times its mass, pentaerythritol with a mass of 6% of rosin, 8% neopentyl glycol, and an appropriate amount of modified serpentine Composition of stone powder.

[0045] The preparation method of phenolic resin microsphere comprises the following steps:

[0046] Weigh phenolic resin, diisopropyl azodicarboxylate, octylphenol polyoxyethylene ether and acetone according to the weight ratio of 1:0.05:0.15:3; after ultrasonic stirring for 35 minutes, let it stand at 40°C for 25 hours , the gained is recorded as the mixed component; then dropwise add dihydroxypolydimethylsiloxane whose volume fraction is 0.4% to the mixed component while stirring at a rate of 35 drops / min; after the addition is completed, continue Mechanically stir the resulting mixture for 15 minutes; then cool it to room temperature, collect the spherical particles floating on the li...

Embodiment 3

[0061] A rosin-modified phenolic resin with good heat resistance, consisting of phenolic resin microspheres and rosin whose mass is 3.5 times its mass, pentaerythritol with a mass of 8% of rosin, 10% neopentyl glycol and an appropriate amount of modified serpentine Composition of stone powder.

[0062] The preparation method of phenolic resin microsphere comprises the following steps:

[0063] Weigh phenolic resin, diisopropyl azodicarboxylate, octylphenol polyoxyethylene ether and acetone respectively according to the weight ratio of 1:0.06:0.16:5; after ultrasonic stirring for 40min, let it stand at 50°C for 30h , the gained is recorded as the mixed component; then dropwise add dihydroxypolydimethylsiloxane whose volume fraction is 0.5% to the mixed component while stirring at a rate of 40 drops / min; after the addition is completed, continue Mechanically stir the obtained mixture for 20 minutes; then cool it to room temperature, collect the spherical particles floating on t...

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Abstract

The invention relates to the technical field of skin care cream preparation, in particular to rosin modified phenolic resin with good heat resistance and a preparation process thereof. The resin is composed of phenolic resin microspheres, rosin with the mass 1.2-3.5 times, pentaerythritol with the mass 5-8% of the mass of the rosin, neopentyl glycol 7-10% of the mass of the rosin and the modified serpentine micro powder. Phenolic resin microspheres, pentaerythritol, neopentyl glycol and modified serpentine micro powder are adopted. According to the preparation method disclosed by the invention, the serpentine micro powder is subjected to surface treatment by using the silane coupling agent, and then the serpentine micro powder modified by the silane coupling agent is subjected to modification treatment by using the hyperbranched polymer, so that a three-dimensional network space on the surface of the serpentine is expanded to a great extent; the modified serpentine micro powder, the rosin and the phenolic resin microspheres are mutually cooperated and matched, so that the heat resistance of the prepared phenolic resin finished product is greatly improved; in addition, the mechanical property is improved to a great extent.

Description

technical field [0001] The invention relates to the technical field of phenolic resin preparation, in particular to a rosin-modified phenolic resin with good heat resistance and a preparation process thereof. Background technique [0002] Phenolic resin is a general term for resinous polymers formed by polycondensation of phenol and aldehyde in the presence of acidic or basic catalysts. It usually refers to the resin obtained from the condensation of phenol or its homologues (such as cresol, xylenol, etc.) and formaldehyde. According to the type and ratio of raw materials used and the type of catalyst, it can be divided into two types of thermoplastic and thermosetting resins. Thermoplastic phenolic resin is a linear resin that only melts when heated, but cannot become insoluble or infusible, but can be transformed into thermosetting after adding a curing agent (such as hexamethylenetetramine). It uses difunctional or trifunctional phenols as raw materials, and is produced...

Claims

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Application Information

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IPC IPC(8): C08G8/34C08L61/14C08K9/06C08K9/04C08K3/34C08J3/12C08L61/06
CPCC08G8/34C08J3/12C08J2361/06C08K3/34C08K9/06C08K9/08C08L2201/08C08L61/14
Inventor 刘伟俊林文丹
Owner 刘伟俊
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