Preparation method of chopped carbon fiber reinforced photosensitive resin

A technology of chopped carbon fiber and photosensitive resin, which is applied in the field of preparation of photosensitive resin, can solve the problems of insufficient mechanical properties of photosensitive resin and cannot meet the requirements of industrial molding parts, etc., and achieves good dispersion effect, good mechanical properties and broad application prospects. Effect

Inactive Publication Date: 2019-08-23
宁波哈勒姆电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, simple photosensitive resins are often not excellent in mechanical properties, and cannot meet the requirements of many industrial molded parts in some process environments that require increased strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The invention provides a method for preparing a photosensitive resin reinforced with chopped carbon fibers, so that the photosensitive resin reinforced with chopped carbon fibers can be cured and formed layer by layer, and the strength is greatly improved. The specific operation steps are as follows:

[0025] The first step is to mill the chopped carbon fiber with a small amount of nano-silica, coupling agent, and acrylate oligomer for 5-30 minutes with a ball mill to obtain the first mixture;

[0026] The second step is to stir the first mixture with acrylate oligomers, active monomers, anti-sedimentation additives, defoamers, and photoinitiators for 10-30 minutes to obtain the second mixture, and then ultrasonically oscillate for 10-30 minutes. Minutes to get the finished photosensitive resin.

[0027] Wherein, the mass percentages of chopped carbon fiber and nano silicon dioxide, coupling agent and acrylate oligomer described in the first step are respectively: chop...

no. 1 example

[0034] The preparation method of the photosensitive resin reinforced by a kind of chopped carbon fiber is as follows:

[0035] Step 1, put 70 parts by mass of chopped carbon fibers with a length of 3 mm, 25 parts by mass of acrylate oligomers, 5 parts by mass of nano-silica, and 0.5 parts by mass of silane coupling agent KH-550 into a ball mill , ball milled for 15 minutes to obtain the first mixture.

[0036] Wherein the acrylate oligomer is an epoxy acrylate oligomer and a urethane acrylate oligomer, and the mass ratio of the two is 0.7:1.

[0037] Step 2: 7 parts by mass of the first mixture, 25 parts by mass of acrylate oligomers, 60.8 parts by mass of triethylene glycol diacrylate active monomer, and 1.5 parts by mass of nonionic polyoxyethylene fatty amine, After mixing 0.7 parts by mass of the silicone defoamer and 5 parts by mass of the photoinitiator, they were stirred for 15 minutes to obtain the second mixture, and then ultrasonically oscillated for 10 minutes to o...

no. 2 example

[0040] The preparation method of the photosensitive resin reinforced by a kind of chopped carbon fiber is as follows:

[0041] Step 1, put 75 parts by mass of chopped carbon fibers with a length of 5 mm, 18 parts by mass of acrylate oligomers, 7 parts by mass of nano-silica, and 0.7 parts by mass of silane coupling agent KH-550 into a ball mill , ball milled for 25 minutes to obtain the first mixture.

[0042] Wherein the acrylate oligomer is an epoxy acrylate oligomer and a urethane acrylate oligomer, and the mass ratio of the two is 1:1.

[0043] Step 2: 15 parts by mass of the first mixture, 15 parts by mass of acrylate oligomers, 62.8 parts by mass of triethylene glycol diacrylate active monomer, 2.5 parts by mass of nonionic polyoxyethylene fatty amine, After mixing 0.2 parts by mass of the silicone defoamer and 4.5 parts by mass of the photoinitiator, they were stirred for 20 minutes to obtain the second mixture, and then ultrasonically oscillated for 20 minutes to obta...

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Abstract

The invention discloses a preparation method of a chopped carbon fiber reinforced photosensitive resin. The method comprises the following steps: (a) performing ball milling on the chopped carbon fiber with a small amount of nano silica, a coupling agent, an acrylate oligomer to obtain a first mixture; (b) stirring the first mixture with the acrylate oligomer, a reactive monomer, an anti-settlingaid and an anti-foaming agent to obtain a second mixture; and (c) oscillating the second mixture to prepare the photosensitive resin finished product. The method has the following beneficial effects:the chopped carbon fiber is evenly distributed in the photosensitive resin, and a photo-curable rapid-formed chopped carbon fiber reinforced photosensitive resin-based composite material is prepared;and the chopped carbon fiber has a relatively high proportion in the photosensitive resin, and the dispersion effect is good, so that a high-toughness resin product with uniform fiber distribution canbe obtained in the layer-by-layer photo-curing shaping process of the photosensitive resin, mechanical properties are good, and application prospects are broad.

Description

technical field [0001] The invention relates to the field of photosensitive resin preparation, in particular to a preparation method of chopped carbon fiber reinforced photosensitive resin. Background technique [0002] Photosensitive resin is a liquid resin material used for photocuring rapid prototyping. It is mainly composed of 1-3 kinds of polymer base polymers, reactive monomer diluents, photoinitiators and other various additives. Because it can be quickly cured and formed under the irradiation of ultraviolet light, has strong reactivity, the polymerization process is easy to control, and the required processing and production equipment is simple. In the past two years, it has been widely used in emerging industries such as 3D printing. [0003] The biggest feature of photosensitive resin is its fast curing rate, which can be cured and formed within a few seconds under the condition of UV light, which endows it with high efficiency in production. In addition, the pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F283/10C08F283/00C08F222/20C08K7/06C08K3/36C08K5/544
CPCC08F283/008C08F283/105C08K3/36C08K5/544C08K7/06C08K2201/011
Inventor 张远明
Owner 宁波哈勒姆电子科技有限公司
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