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Rapidly cooled and solidified 3D printing material and preparation method thereof

A 3D printing and rapid cooling technology, which is applied in the field of 3D printing materials, can solve the problems of shortening the cooling and solidification time of PCL and the difficulties of supports, and achieve the effects of fast cooling and solidification rate, high product precision and decreased melt index

Active Publication Date: 2022-02-08
XIAOGAN ESUN NEW MATERIAL +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the above technical problems, the present invention provides a fast cooling and solidification 3D printing consumable and its preparation method. The 3D printing material prepared by the preparation method has a fast cooling and solidification rate, which significantly shortens the cooling and solidification time of PCL, avoiding the traditional PCL is difficult to support due to slow cooling in 3D printing, and the prepared material is not easy to stick to hands

Method used

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  • Rapidly cooled and solidified 3D printing material and preparation method thereof
  • Rapidly cooled and solidified 3D printing material and preparation method thereof
  • Rapidly cooled and solidified 3D printing material and preparation method thereof

Examples

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Embodiment 1

[0036] This embodiment discloses a method for preparing a rapidly cooled and solidified 3D printing material, which includes uniformly mixing 70 parts of polycaprolactone with 3.5 parts of ethylene-sodium methacrylate and sodium acrylate to obtain a first mixture, the first mixture Melt and granulate through twin-screw extruder, control the temperature at 80-120°C to obtain the first masterbatch, the specific temperature of each stage is 80°C, 95°C, 110°C, 120°C, 120°C, 110°C, 95°C , 80°C; the first masterbatch is mixed with 23.8 parts of PBAT elastomer, 1.4 parts of talcum powder and titanium dioxide mixture, and 1.3 parts of antioxidant 1010 to obtain the second mixture,

[0037] The second mixture is melted and granulated by a twin-screw extruder, and the temperature is controlled at 80-120°C to obtain the second master batch. The specific temperatures of each stage are 82°C, 95°C, 110°C, 120°C, 120°C, 110°C, 95°C, 82°C; the second masterbatch is put into a single-screw ext...

Embodiment 2

[0041] This embodiment discloses a method for preparing a rapidly cooled and solidified 3D printing material, which includes uniformly mixing 87.8 parts of polycaprolactone with 0.8 parts of ethylene-sodium methacrylate and sodium acrylate to obtain a first mixture, and the first mixture is subjected to Twin-screw extruder melt granulation, control the temperature at 80-120°C to obtain the first masterbatch, the first masterbatch and 8.8 parts of PBAT elastomer, 1.6 parts of the mixture of talcum powder and titanium dioxide and 1 part of antioxidant 168 to obtain the second mixture evenly, the second mixture is melted and granulated through a twin-screw extruder, and the temperature is controlled at 80-120°C to obtain the second masterbatch, and the second masterbatch is fed into the single-screw extruder Wire drawing treatment, controlling the wire forming temperature to 85-110°C to obtain 3D printing materials.

[0042] Further measurement of the tensile strength of the 3D pri...

Embodiment 3

[0044] This embodiment discloses a method for preparing a rapidly cooling and solidifying 3D printing material, which includes uniformly mixing 87.5 parts of polycaprolactone and 1.2 parts of ethylene-sodium methacrylate to obtain a first mixture, and the first mixture is extruded by a twin-screw Exit the machine for melting and granulation, control the temperature at 80-120°C to obtain the first masterbatch, the first masterbatch and 8.8 parts of TPU, 1.4 parts of montmorillonite and mica nucleating agent with a mass ratio of 3:2 and 1.1 parts The mixture of antioxidant 1010 and antioxidant 168 with a mass ratio of 1:2 was uniformly mixed to obtain the second mixture. The second mixture was melted and granulated through a twin-screw extruder, and the temperature was controlled at 80-120°C to obtain the second mixture. The masterbatch, the second masterbatch is put into a single-screw extruder and subjected to wire drawing treatment, and the molding temperature of the wire rod ...

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Abstract

The invention discloses a rapidly cooled and solidified 3D printing material and a preparation method thereof, belonging to the technical field of 3D printing. It consists of the following raw material components in parts by mass, polycaprolactone: 70-95 parts, elastomer: 2-20 parts, ionizing agent: 1-6 parts, nucleating agent: 1-2 parts, anti- Oxygen agent: 1 to 2 parts; the ionizing agent is at least one of sodium acrylate, calcium benzenesulfonate, calcium hydroxide, sodium toluenesulfonate or ethylene-sodium methacrylate. Among them, the modification treatment of polycaprolactone by ionizing reagents designed in the present invention reduces the melt index of the prepared printing materials, and avoids the sticky problem under the condition of satisfying proper fluidity. The 3D printing material can have good applications in the field of 3D printing and medical care.

Description

technical field [0001] The invention relates to a 3D printing material, which belongs to the technical field of 3D printing, in particular to a rapidly cooling and solidifying 3D printing material and a preparation method thereof. Background technique [0002] Polycaprolactone (PCL) is a consumable mainly used for supporting 3D printing, with a low melting point of only about 60°C; like most biological materials, it is often used for special purposes such as drug delivery devices, sutures etc. At the same time, PCL also has shape memory. In 3D printing, because of its low melting point, it does not require a high printing temperature, so as to achieve the purpose of energy saving. At the same time, due to its low melting point, it can effectively avoid burns when operating personnel. In addition, because it has the characteristic of shape memory, it makes the printed things have "memory", and under certain conditions, it can return to the original set shape. In the medica...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/04C08L23/08C08L67/02C08L75/04C08K13/02C08K3/34C08K3/22C08K3/36C08K3/26B33Y70/10
CPCC08L67/04B33Y70/00C08L2205/035C08L2205/03C08L2205/24C08L2207/04C08K2003/2241C08K2003/265C08K2201/014C08L23/0876C08L67/02C08K13/02C08K3/34C08K3/22C08L75/04C08K3/346C08L23/0815C08K3/36C08L23/0853C08K3/26
Inventor 杨义浒陈锐张向南涂定军段江北
Owner XIAOGAN ESUN NEW MATERIAL
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