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Cardanol-based photosensitive resin for 3D printing and preparation method thereof

A cardanol-based, 3D printing technology, applied in the direction of additive processing, etc., to achieve the effect of increased and controllable crosslinking rate, improved impact strength, and reduced application cost

Active Publication Date: 2019-06-11
QUANZHOU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] And the use of formaldehyde polycondensation of cardanol for modification and 3D printing and curing has not been reported so far.

Method used

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  • Cardanol-based photosensitive resin for 3D printing and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0025] A kind of preparation method of cardanol-based photosensitive resin for 3D printing, it comprises the steps:

[0026] 1) Using xylene as solvent, add 100g of cashew nut shell liquid (CNSL), 4g of hexamethylenetetramine (H powder), and then add a certain amount of distilled water to make the mixed system react at 80-90°C for 1-3 hours, and then heat up to 130-140°C for reflux treatment for 1-2 hours to obtain cardanol-formaldehyde polycondensate (PCF);

[0027] 2) Use 0.8g p-toluenesulfonic acid as a catalyst, 1g 1,4-hydroquinone as a polymerization inhibitor, and 30g xylene as a solvent. After mixing, add 50g cardanol formaldehyde condensation polymer (PCF) and 50g acryloyl chloride (AC), then reflux at 80-90°C for 6 hours, then heat up to 100-110°C, and react again for 5-6 hours to obtain acryloyl chloride cardanol phenolic photosensitive resin (MPCF), that is, cardanol-based photocuring Prepolymer; Wherein, the viscosity of acryloyl chloride cardanol phenolic photose...

Embodiment 2

[0032] 1) Using xylene as solvent, add 100g of cashew nut shell liquid (CNSL), 4g of hexamethylenetetramine (H powder), and then add a certain amount of distilled water; make the mixed system react at 80-90°C for 1-3 hours, and then heat up to 130-140°C for reflux treatment for 1-2 hours to obtain cardanol-formaldehyde polycondensate (PCF);

[0033] 2) With 0.8g p-toluenesulfonic acid as catalyst, 1g 1,4-hydroquinone as polymerization inhibitor, and 30g xylene as solvent, after mixing, add 34g cardanol formaldehyde condensation polymer (PCF) and 66g methyl Acrylic acid (MAA), reflux at a temperature of 80-90°C for 6 hours, then raise the temperature to 100-110°C, and react for 5-6 hours to obtain a methacrylic cardanol phenolic photosensitive resin with a viscosity of 1352mPa·s;

[0034]3) after the solvent rotary evaporation in the methacrylic acid cardan phenolic photosensitive resin that step (2) makes, 50g methacrylic acid cardan phenolic photosensitive resin is added to 2...

Embodiment 3

[0038] 1) Using xylene as a solvent, add 100g of cashew nut shell liquid (CNSL), 4g of hexamethylenetetramine (H powder), and then add a certain amount of distilled water to make the mixed system react at 80-90°C for 1-3 hours , and then heat up to 130-140° C. for reflux treatment for 1-2 hours to obtain cardanol-formaldehyde polycondensate (PCF);

[0039] 2) take 0.8g p-toluenesulfonic acid as catalyst, 1g 1,4-hydroquinone as polymerization inhibitor, 30g xylene as solvent, after mixing, add 50g cardanol formaldehyde condensation polymer (PCF) and 50g acrylic acid ( AA), reflux at 80-90°C for 6 hours, then heat up to 100-110°C, and react for 5-6 hours to obtain an acrylic cashew phenolic photosensitive resin with a viscosity of 1710mPa·s;

[0040] 3) After the solvent in the acrylic cardanol phenolic photosensitive resin prepared by step (2) is rotated and evaporated, 50g of acrylic cardanol phenolic photosensitive resin is added to the 2,4,6-trimethylmethanol that is a photo...

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Abstract

The invention discloses a cardanol-based photosensitive resin for 3D printing and a preparation method thereof. The preparation method takes cardanol and hexamethylenetetramine as raw materials, and comprises the following steps: mixing cardanol and hexamethylenetetramine, and then adding xylene as a solvent to prepare a cardanol formaldehyde polycondensate; further using toluenesulfonic acid as acatalyst, 1,4-hydroquinone as a polymerization inhibitor and xylene as a solvent, and adding the toluenesulfonic acid, 1,4-hydroquinone and xylene to a mixture of the cardanol formaldehyde polycondensate and a photosensitive group-containing monomer, so as to prepare a cardanol-based photocurable prepolymer; and evaporating the solvent, then mixing the cardanol-based photocurable prepolymer and aphotoinitiator at a mass ratio of 100:(0.1-10), and conducting full stirring, so as to obtain the cardanol-based photosensitive resin for 3D printing. The technical solution of the invention is controllable on the aspects of curing and crosslinking, the curing time is short, and implementation is reliable.

Description

technical field [0001] The invention relates to the field of photosensitive resins, in particular to a cardanol-based photosensitive resin for 3D printing and a preparation method thereof. Background technique [0002] The three-dimensional rapid prototyping technology of 3D printing (Three Dimensional Printing) has developed impressively in recent years. It uses materials such as metals, ceramics, and polymers to manufacture products through multi-layer overlay printing. At present, the use of 3D rapid prototyping technology has spread to many fields such as industry, medical treatment, cultural creativity, etc., and its application prospects are broad. The 3D printing industry has become a hot field for many R&D personnel and capital investment. Photocuring 3D printing technology is a hot research topic at present, and one of the core issues is the development of photosensitive resin. The photocuring system is generally composed of oligomers, reactive diluents, photoini...

Claims

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Application Information

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IPC IPC(8): C08F299/02C08F2/48C08G8/30C08G8/32B33Y70/00
Inventor 陈少云卓东贤郑燕玉瞿波刘小英李文杰
Owner QUANZHOU NORMAL UNIV
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