Modified phenolic resin material for 3D printing and preparation method thereof

A phenolic resin, 3D printing technology, applied in the field of 3D printing materials and their preparation, can solve the problems of single performance improvement, affecting the modification effect, unable to meet the 3D printing technology, etc., to achieve lower operating temperature, low production cost, and chain extension and the effect of simple and controllable cross-linking degree

Active Publication Date: 2014-08-13
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

A single performance improvement cannot meet the performance requirements of 3D printing technology for phenolic resin materials, and the combination of 3D mold

Method used

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  • Modified phenolic resin material for 3D printing and preparation method thereof
  • Modified phenolic resin material for 3D printing and preparation method thereof
  • Modified phenolic resin material for 3D printing and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0042] Example 1

[0043] 1) Add 70 parts of novolak resin (molecular weight 600) and 7 parts of polybutyl methacrylate oligomer with molecular weight of 350 to the blender, raise the temperature to 80°C, add 0.2 parts of chain extender and 0.4 parts of Blocking agent, react for half an hour, then add 0.2 parts of cross-linking agent and 7 parts of reinforcing agent, fully mix for 1 hour at a speed of 600r / min, and then discharge;

[0044] 2) Mix the mixture obtained in step 1) with 12 parts of toughening agent, 3 parts of lubricant and 0.2 parts of stabilizer with a twin-screw extruder for mixing, extruding and granulating. The time of the material in the extruder does not exceed 3 minute. The screw diameter of the twin-screw extruder is 71mm, the extruder temperature is set to 150-170℃, and the die temperature is 170-180℃:

[0045] 3) Dry the particles produced in step 2) at a temperature of 50°C for 2-3 hours and then extrude them with a twin-screw extruder into filaments with d...

Example Embodiment

[0046] Example 2

[0047] 1) Add 75 parts of novolac resin (molecular weight 600) and 7 parts of polybutyl methacrylate oligomer with molecular weight of 350 to the mixer, increase the temperature to 80°C, add 0.2 parts of chain extender and 0.6 parts of sealing agent in turn Ending agent, react for half an hour, then add 0.2 parts of cross-linking agent and 7 parts of reinforcing agent, fully mix for 1 hour under the condition of rotation speed of 600r / min, and then discharge;

[0048] 2) Mix the mixture obtained in step 1) with 12 parts of toughening agent, 3 parts of lubricant and 0.2 parts of stabilizer with a twin-screw extruder for mixing, extruding and granulating. The time of the material in the extruder does not exceed 3 minute. The screw diameter of the twin-screw extruder is 71mm, the extruder temperature is set to 150-170℃, and the die temperature is 170-180℃:

[0049] 3) Dry the particles produced in step 2) at a temperature of 50°C for 2-3 hours and then extrude them ...

Example Embodiment

[0050] Example 3

[0051] 1) Add 80 parts of novolac resin (molecular weight 600) and 7 parts of polybutyl methacrylate oligomer with molecular weight of 350 to the blender, increase the temperature to 80°C, and add 0.2 parts of chain extender and 0.6 parts of sealing agent in sequence. Ending agent, react for half an hour, then add 0.2 parts of cross-linking agent and 7 parts of reinforcing agent, fully mix for 1 hour under the condition of rotation speed of 600r / min, and then discharge;

[0052] 2) Mix the mixture obtained in step 1) with 12 parts of toughening agent, 3 parts of lubricant and 0.2 parts of stabilizer with a twin-screw extruder for mixing, extruding and granulating. The time of the material in the extruder does not exceed 3 minute. The screw diameter of the twin-screw extruder is 71mm, the extruder temperature is set to 150-170℃, and the die temperature is 170-180℃:

[0053] 3) Dry the particles produced in step 2) at a temperature of 50°C for 2-3 hours and then ex...

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Abstract

The invention relates to a modified phenolic resin material for 3D printing. Raw materials of the modified phenolic resin material comprises, by weight, 70-80 parts of phenolic resin, 0.1-0.5 parts of a chain extender, 0.5-1 part of an end-capping agent, 0.1-0.5 parts of a cross-linking agent, 5-10 parts of a low-molecular polymer, 10-15 parts of a flexibilizer, 5-10 parts of a reinforcing agent, 2-10 parts of a lubricant and 0.1-0.5 parts of a heat stabilizer. Through a simple material mixing and extruding technology, the phenolic resin is subjected to a modification process so that flexibility, impact intensity and thermal deformation temperature of the phenolic resin are increased greatly. In addition, the phenolic resin material can be processed into various forms, is suitable for various 3D-printing moulding technologies and has a wide application prospect in the field of 3D printing.

Description

technical field [0001] The invention relates to a 3D printing material and a preparation method thereof, in particular to a modified phenolic resin material suitable for 3D printing and a preparation method thereof. Background technique [0002] 3D printing technology, also known as additive manufacturing technology, is actually an emerging technology in the field of rapid prototyping. It is based on digital model files and uses bondable materials such as powdered metal or plastic. A technique for constructing objects in a manner. The basic principle is additive manufacturing, the technique of adding material layer by layer to generate a three-dimensional solid. At present, 3D printing technology is mainly used in product prototyping, mold manufacturing, art creation, jewelry making and other fields, replacing these traditional fine processing techniques. In addition, 3D printing technology is gradually applied in fields such as medicine, bioengineering, architecture, clot...

Claims

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Application Information

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IPC IPC(8): C08L61/06C08L33/10C08J3/24B29C47/92B29B9/06B29C48/92
CPCB29B7/728B29C2947/92619B29C2947/92714B29B7/72B29B7/46B29C47/0011B29B7/7461B29C47/92B29B9/06B29B2009/125B29B9/12B29C48/04B29C48/40B29C48/92B29C2948/92619B29C2948/92704B29C2948/92714
Inventor 李志波符文鑫张树升盛力夏爽林学春马永梅孙文华徐坚董金勇李春成
Owner INST OF CHEM CHINESE ACAD OF SCI
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