Photocuring flexible resin for 3D (three dimensional) printing and preparation method thereof

Abstract

The invention discloses photocuring flexible resin for 3D (three dimensional) printing and a preparation method thereof. The photocuring flexible resin for the 3D printing is characterized by being prepared from the following raw material components in parts by weight: 20 to 80 parts of a monomer raw material, 30 to 70 parts of a resin raw material, 0.3 to 3 parts of an initiator, 0.02 to 0.08 part of a defoaming agent, 0.03 to 1 part of a leveling agent and 0.05 to 5 parts of a pigment. The photocuring flexible resin is obtained by mixing of the raw material components, low-speed stirring, high-speed stirring and screening. A resin product has high elongation at break and is proper in strength and hardness; the hardness is 45 to 55 A, and the elongation at break is 100 to 160 percent; the resin product has the advantages of bending resistance, high forming rate and high precision and can meet the requirements for production and manufacturing of products such as shoe materials, seal models, spacers and gaskets; meanwhile, the preparation method has simple and efficient steps and is extremely high in promotion space and market value.

Description

technical field

[0001] The invention relates to a resin and a preparation method thereof, in particular to a photocurable flexible resin for 3D printing and a preparation method thereof, and belongs to the field of development of new materials for 3D printing. Background technique

[0002] With the continuous development and progress of 3D printing technology, various types of printing equipment are gradually applied to various fields. At the same time, the requirements for the performance of the materials used are getting higher and higher, and it is urgent to develop a variety of new materials with performance standards. Light-curing 3D printing is mainly divided into two types: SLA and DLP. Compared with SLA molding technology, DLP technology has a higher printing time rate and relatively poor controllability of printing accuracy. As an earlier printing technology, light-curing 3D printing has been widely recognized for its advantages of high precision of printed samples,...

Examples

Embodiment 1

[0033] The technical solution adopted in this embodiment is a method for preparing a light-cured flexible resin for 3D printing. The steps of the preparation method are:

[0034] (1) Low-speed stirring: add the pre-weighed monomer raw materials, resin raw materials, initiators, defoamers, leveling agents and pigments into the agitator in sequence, and pre-mix at low speed to obtain a premix; The rotating speed is 300-800r / min;

[0035] The raw material components include the following components in parts by weight: the monomer raw material is 60.5 parts of polyethylene glycol diacrylate, the resin raw material is 34.9 parts of trifunctional aromatic polyether urethane acrylate, and the initiator is phenylphosphine oxide 2.1 parts, defoamer is BYK 067A 0.5 parts, leveling agent (BYK 373) 1 part, pigment (carbon black) 1 part;

[0036] (2) High-speed stirring: Stir the premixed solution in the mixer at high speed for 13 minutes to obtain a uniform mixed solution; the speed of h...

Embodiment 2

[0041] The technical solution adopted in this embodiment is a method for preparing a light-cured flexible resin for 3D printing. The steps of the preparation method are:

[0042] (1) Low-speed stirring: add the pre-weighed monomer raw materials, resin raw materials, initiators, defoamers, leveling agents and pigments into the agitator in sequence, and pre-mix at low speed to obtain a premix; The rotating speed is 380r / min;

[0043] The raw material components include the following components in parts by weight: the monomer raw material is 26.6 parts of trimethylolpropane tetraacrylate, the resin raw material is 67.5 parts of aromatic polyester polyurethane acrylate, and the initiator is 2.9 parts of phenylphosphine oxide , Defoamer BYK067A 0.5 parts, leveling agent (BYK 373) 1 part, pigment (carbon black) 1.5 parts;

[0044] (2) High-speed stirring: Stir the premixed liquid in the mixer at high speed for 11 minutes to obtain a uniform mixed liquid; the speed of high-speed sti...

Embodiment 3

[0049] The technical solution adopted in this embodiment is a method for preparing a light-cured flexible resin for 3D printing. The steps of the preparation method are:

[0050] (1) Low-speed stirring: add the pre-weighed monomer raw materials, resin raw materials, initiators, defoamers, leveling agents and pigments into the agitator in sequence, and pre-mix at low speed to obtain a premix; The rotating speed is 650r / min;

[0051] The raw material components include the following components in parts by weight: monomer raw material polyethylene glycol diacrylate 19.1 parts, trimethylolpropane tetraacrylate 29.2 parts; resin raw material trifunctional aromatic polyether polyurethane acrylic acid 45.2 parts of ester, 0.55 parts of initiator phenylphosphine oxide, 0.55 parts of defoamer BYK 067A, 1 part of leveling agent (BYK 373), 1.2 parts of pigment (carbon black);

[0052] (2) High-speed stirring: Stir the premix in the mixer at high speed for 14 minutes to obtain a uniform mi...

technical field

[0001] The invention relates to a resin and a preparation method thereof, in particular to a photocurable flexible resin for 3D printing and a preparation method thereof, and belongs to the field of development of new materials for 3D printing. Background technique

[0002] With the continuous development and progress of 3D printing technology, various types of printing equipment are gradually applied to various fields. At the same time, the requirements for the performance of the materials used are getting higher and higher, and it is urgent to develop a variety of new materials with performance standards. Light-curing 3D printing is mainly divided into two types: SLA and DLP. Compared with SLA molding technology, DLP technology has a higher printing time rate and relatively poor controllability of printing accuracy. As an earlier printing technology, light-curing 3D printing has been widely recognized for its advantages of high precision of printed samples,...

Examples

Embodiment 1

[0033] The technical solution adopted in this embodiment is a method for preparing a light-cured flexible resin for 3D printing. The steps of the preparation method are:

[0034] (1) Low-speed stirring: add the pre-weighed monomer raw materials, resin raw materials, initiators, defoamers, leveling agents and pigments into the agitator in sequence, and pre-mix at low speed to obtain a premix; The rotating speed is 300-800r / min;

[0035] The raw material components include the following components in parts by weight: the monomer raw material is 60.5 parts of polyethylene glycol diacrylate, the resin raw material is 34.9 parts of trifunctional aromatic polyether urethane acrylate, and the initiator is phenylphosphine oxide 2.1 parts, defoamer is BYK 067A 0.5 parts, leveling agent (BYK 373) 1 part, pigment (carbon black) 1 part;

[0036] (2) High-speed stirring: Stir the premixed solution in the mixer at high speed for 13 minutes to obtain a uniform mixed solution; the speed of h...

Embodiment 2

[0041] The technical solution adopted in this embodiment is a method for preparing a light-cured flexible resin for 3D printing. The steps of the preparation method are:

[0042] (1) Low-speed stirring: add the pre-weighed monomer raw materials, resin raw materials, initiators, defoamers, leveling agents and pigments into the agitator in sequence, and pre-mix at low speed to obtain a premix; The rotating speed is 380r / min;

[0043] The raw material components include the following components in parts by weight: the monomer raw material is 26.6 parts of trimethylolpropane tetraacrylate, the resin raw material is 67.5 parts of aromatic polyester polyurethane acrylate, and the initiator is 2.9 parts of phenylphosphine oxide , Defoamer BYK067A 0.5 parts, leveling agent (BYK 373) 1 part, pigment (carbon black) 1.5 parts;

[0044] (2) High-speed stirring: Stir the premixed liquid in the mixer at high speed for 11 minutes to obtain a uniform mixed liquid; the speed of high-speed sti...

Embodiment 3

[0049] The technical solution adopted in this embodiment is a method for preparing a light-cured flexible resin for 3D printing. The steps of the preparation method are:

[0050] (1) Low-speed stirring: add the pre-weighed monomer raw materials, resin raw materials, initiators, defoamers, leveling agents and pigments into the agitator in sequence, and pre-mix at low speed to obtain a premix; The rotating speed is 650r / min;

[0051] The raw material components include the following components in parts by weight: monomer raw material polyethylene glycol diacrylate 19.1 parts, trimethylolpropane tetraacrylate 29.2 parts; resin raw material trifunctional aromatic polyether polyurethane acrylic acid 45.2 parts of ester, 0.55 parts of initiator phenylphosphine oxide, 0.55 parts of defoamer BYK 067A, 1 part of leveling agent (BYK 373), 1.2 parts of pigment (carbon black);

[0052] (2) High-speed stirring: Stir the premix in the mixer at high speed for 14 minutes to obtain a uniform mi...