阅读说明：本技术 一种高性能抗形变3d打印材料及其制备方法 (High-performance anti-deformation 3D printing material and preparation method thereof ) 是由 张耀鹏 张长松 张雷 于 2019-10-15 设计创作，主要内容包括：本发明提供了一种高性能抗形变3D打印材料包括以下重量份的原料：PA 50-60份、PCL 10-20份、马来酸酐相容剂1-3份、接枝烯烃2-6份。本发明还提供了其的制备方法,在PCL熔融液中将接枝烯烃接枝到PA上,预交联上述组分后,再通过双螺杆机挤出。该3D打印材料在熔融状态下有很好的流动性,可用于3D打印技术,产品具有良好的力学性能。(The invention provides a high-performance anti-deformation 3D printing material which comprises the following raw materials in parts by weight: 50-60 parts of PA, 10-20 parts of PCL, 1-3 parts of maleic anhydride compatilizer and 2-6 parts of grafted olefin. The invention also provides a preparation method thereof, grafting the grafting olefin onto PA in the PCL molten liquid, pre-crosslinking the components, and extruding by a double-screw extruder. The 3D printing material has good fluidity in a molten state, can be used for a 3D printing technology, and has good mechanical properties.)

1. The high-performance anti-deformation 3D printing material is characterized by comprising the following raw materials in parts by weight:

50-60 parts of PA

10-20 parts of PCL

1-3 parts of maleic anhydride compatilizer

2-6 parts of a grafted olefin.

2. The printing material according to claim 1, comprising the following raw materials in parts by weight:

50-60 parts of PA

10-15 parts of PCL

2-3 parts of maleic anhydride compatilizer

3-6 parts of a grafted olefin.

3. The printing material according to claim 1 or 2, comprising the following raw materials in parts by weight:

PA 55 portion

15 portions of PCL

2 parts of maleic anhydride compatilizer

4 parts of a grafted olefin.

4. The printed material of claim 1, wherein the phase-grafted olefin is polyethylene, polypropylene, isoprene, vinyl chloride, styrene.

5. A method of preparing a 3D printed material according to any of claims 1, 2 or 4, comprising the steps of:

1) heating PCL to 80-100 ℃, and dissolving PA in PCL in batches;

2) adding a maleic anhydride compatilizer into the mixture, heating to 120 ℃, adding the grafted olefin, and stirring at a high speed until the reaction is complete;

3) cooling, filtering and drying;

4) adding the mixture into a double-screw extruder for extrusion, wherein the temperature of the double-screw extruder is 160-225 ℃.

6. The process according to claim 5, wherein the temperatures in the zones of the twin-screw extruder are: a first area: 160-170 ℃; and a second zone: 170-180 ℃; and (3) three zones: 180-190 ℃; and (4) four areas: 190-200 ℃; extrusion temperature: 210-225 ℃.

7. Use of the 3D printed material according to any of claims 1 or 2 or 4 in the field of 3D printing.

Technical Field

The invention belongs to the field of 3D printing consumable manufacturing, and particularly relates to a high-performance anti-deformation 3D printing material and a preparation method thereof.

Background

3D printing is a technology for manufacturing a three-dimensional product by adding materials layer by layer through a 3D printing device according to a designed 3D model. This layer-by-layer build-up forming technique is also known as additive manufacturing. The 3D printing integrates advanced technologies in a plurality of fields such as a digital modeling technology, an electromechanical control technology, an information technology, material science and chemistry, is one of rapid prototyping technologies, and is known as a core technology of the third industrial revolution.

The 3D printing material is an important material basis for the development of the 3D printing technology, and the development of the material determines whether the 3D printing can be widely applied or not to some extent. In recent years, 3D printing technology has been rapidly developed, and the practical application fields thereof have been gradually increased. However, the supply situation of 3D printing materials is not optimistic, and the supply situation becomes a bottleneck that restricts the development of the 3D printing industry. In 3D printing consumables with limited quantity, the problems of low strength and elongation, poor deformation resistance or toxic and harmful gas release of materials in the preparation process are also common.

CN108034208A describes a high performance anti-deformation 3D printing polymer material, which is prepared by blending and extruding inorganic ceramic substrates such as hydroxyapatite, calcium carbonate and surface modified ceramic particle powder with a polymer composition, and due to the limitation of equipment, inaccurate shape is caused during the extrusion process, and during printing, due to the separation of organic and inorganic components caused by hot melting, the density of the printed product is not uniform, and the surface has floating powder and the deformation resistance is not outstanding.

Disclosure of Invention

In order to solve the above problems, the present invention provides a deformation-resistant material entirely composed of organic matter and a method for preparing the same.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a high-performance anti-deformation 3D printing material comprises the following raw materials in parts by weight:

50-60 parts of PA

PCL10-20 parts

1-3 parts of maleic anhydride compatilizer

2-6 parts of a grafted olefin.

Preferably, the raw materials are:

50-60 parts of PA

10-15 parts of PCL

2-3 parts of maleic anhydride compatilizer

3-6 parts of a grafted olefin.

In some embodiments:

PA 55 portion

15 portions of PCL

2 parts of maleic anhydride compatilizer

4 parts of a grafted olefin.

Preferably, the grafted olefin is polyethylene, polypropylene, isoprene, vinyl chloride, styrene.

The preparation method of the 3D printing material comprises the following steps:

1) heating PCL to 80-100 ℃, and dissolving PA in PCL in batches;

2) adding a maleic anhydride compatilizer into the mixture, heating to 120 ℃, adding the grafted olefin, and stirring at a high speed until the reaction is complete;

3) cooling, filtering and drying;

4) adding the mixture into a double-screw extruder for extrusion, wherein the temperature of the double-screw extruder is 160-225 ℃.

Further, the temperature of each zone of the double-screw extruder is as follows: a first area: 160-170 ℃; and a second zone: 170-180 ℃; and (3) three zones: 180-190 ℃; and (4) four areas: 190-200 ℃; extrusion temperature: 210-225 ℃.

The present printing materials may be used in Fused Deposition Modeling (FDM) printing techniques.

The invention has the beneficial effects that:

the PCL has high toughness, can dissolve PA, accelerates the reaction rate of grafting another high-toughness polar molecular olefin to the PA in a PCL liquid environment, synergistically improves the mechanical property of a printing material, reduces the dosage of an additive, and ensures the deformation resistance of a product.

The material disclosed by the invention has good fluidity in a molten state, and can be used for a 3D printing technology.

The invention has few raw material types, does not contain toxic additive, and can be used for manufacturing biomedical products with complex structures.

The method has the advantages of simple process flow, energy conservation, emission reduction, easy degradation and environmental friendliness.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.