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Plant polyene phenol-modified phenolic resin and preparation method thereof

A plant polyenol and phenolic resin technology, which is applied in the direction of aldehyde/ketone condensation polymer adhesives, adhesive types, adhesives, etc., can solve the problems of poor peeling resistance, cracking resistance and impact resistance, etc.

Inactive Publication Date: 2018-11-06
SUZHOU BAOLIRUI BIOLOGICAL MATERIAL TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the field of synthetic phenolic resin, phenolic resin is widely used in the field of friction materials and adhesives due to its excellent high temperature resistance and high bond strength. However, when no toughening modification is performed, the cured product is generally brittle. Anti-stripping, anti-cracking, poor impact resistance

Method used

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  • Plant polyene phenol-modified phenolic resin and preparation method thereof
  • Plant polyene phenol-modified phenolic resin and preparation method thereof
  • Plant polyene phenol-modified phenolic resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 150g of plant polyenol, 900g of phenol, and 32g of 30% sodium hydroxide into the flask, raise the temperature to 55°C, slowly add 324g of paraformaldehyde several times, react at 70°C for 1 hour, raise the temperature to 90°C for 40 minutes, add 320 Toluene, react at 85°C for 30 minutes, add ethanol and stir evenly, cool down to 75°C, add 80g of E-51 liquid epoxy resin to react for 2 hours, add 1.6g of 2,4,6-tris(dimethylaminomethyl)phenol and stir After 30 minutes, cool down to 40 degrees and discharge.

Embodiment 2

[0024] Add 135g of plant polyenol, 200g of phenol, and 13.4g of 30% sodium hydroxide into the flask, raise the temperature to 55°C, slowly add 324g of paraformaldehyde in multiple times, react at 70°C for 1 hour, heat up to 90°C for 40 minutes, add 320 toluene, react at 85°C for 30 minutes, add ethanol and stir evenly, cool down to 75°C, add 120g of E-51 liquid epoxy resin to react for 2 hours, add 2.4g of 2,4,6-tris(dimethylaminomethyl)phenol and stir After 30 minutes, cool down to 40 degrees and discharge.

Embodiment 3

[0026] Add 180g of plant polyenol, 225g of phenol, and 18g of 30% sodium hydroxide into the flask, raise the temperature to 55°C, slowly add 360g of paraformaldehyde several times, react at 70°C for 1 hour, raise the temperature to 90°C for 40 minutes, add 320 Toluene, react at 85°C for 30 minutes, add ethanol and stir evenly, cool down to 75°C, add 80g of E-51 liquid epoxy resin to react for 2 hours, add 1.6g of 2,4,6-tris(dimethylaminomethyl)phenol and stir After 30 minutes, cool down to 40 degrees and discharge.

[0027] Coat the plant polyenol-modified phenolic resin prepared in Example 1-3 on a 15cm*5cm sandblasted iron plate, place it in an oven at 70°C, and dry it for 30 minutes; The tensile weight is bonded to the product, and pressed with a pressure of 0.35-1.0Mpa. Keep the curing condition at 150°C for 30 minutes, 165°C for 15 minutes, and 200°C for 5 minutes. Cool to room temperature and use PosiTest AT-A to test the tensile strength, as shown in the table below : ...

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Abstract

In the field of synthetic phenolic resin, due to excellent high-temperature resistance, high bond strength, and the like of phenolic resin, phenolic resin is widely used in the field of friction materials and adhesives. The invention provides a preparation method of a plant polyene phenol-modified phenolic resin. The plant polyene phenol-modified phenolic resin prepared according to the method hasthe advantage of low raw material cost; in addition, because the problem that a phenolic resin binder has high brittleness after curing can be solved by the long-carbon chain plant polyene phenol, the anti-peeling and tensile property of the phenolic resin are greatly improved.

Description

technical field [0001] The invention relates to the production field of phenolic resins, in particular to a preparation method of plant polyenol-modified phenolic resins. Background technique [0002] In the field of synthetic phenolic resin, phenolic resin is widely used in the field of friction materials and adhesives due to its excellent high temperature resistance and high bond strength. However, when no toughening modification is performed, the cured product is generally brittle. Poor resistance to peeling, cracking and impact. The purpose of phenolic resin modification is mainly to improve its brittleness or other physical properties, and to improve its bonding performance to fiber reinforced materials. [0003] Therefore, in order to overcome the high brittleness and weak peel strength of phenolic resin, researchers have conducted a lot of research on phenolic resin to modify the toughness of phenolic resin, improve the mechanical properties, improve its process perf...

Claims

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Application Information

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IPC IPC(8): C08G8/28C08G8/24C09J161/14
CPCC08G8/24C08G8/28C09J161/14
Inventor 戴志成张文鹏
Owner SUZHOU BAOLIRUI BIOLOGICAL MATERIAL TECH DEV
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