阅读说明：本技术 一种3d打印模型抛光液 (3D printing model polishing solution ) 是由 武鹏飞 于 2019-10-10 设计创作，主要内容包括：本发明属于3D打印模型抛光处理技术领域,具体为一种3D打印模型抛光液。该抛光液包括以下质量百分含量的原料：三氯甲烷70％-90％,乙醇0.6％～20％,硅溶胶10％～40％,偶联剂0.2％～1％,渗透剂0.2％～1％,总质量百分含量为100％。该抛光液用于3D打印模型的抛光处理,其通过将模型浸入抛光液中,可与模型所有部分接触,抛光效果好；在三氯甲烷中添加乙醇,可起到稳定剂的作用,破坏三氯甲烷分解形成光气,降低了对人体和环境的不良影响较低,操作安全,有利于市场推广。(The invention belongs to the technical field of 3D printing model polishing treatment, and particularly relates to 3D printing model polishing solution. The polishing solution comprises the following raw materials in percentage by mass: 70-90% of trichloromethane, 0.6-20% of ethanol, 10-40% of silica sol, 0.2-1% of coupling agent, 0.2-1% of penetrating agent and 100% of total mass percentage content. The polishing solution is used for polishing a 3D printing model, and the model can be contacted with all parts of the model by immersing the model in the polishing solution, so that the polishing effect is good; the ethanol added into the trichloromethane can play a role of a stabilizer, destroy the decomposition of the trichloromethane to form phosgene, reduce the adverse effect on human bodies and the environment, is safe to operate and is beneficial to market popularization.)

1. The polishing solution for the 3D printing model is characterized by comprising the following raw materials in percentage by mass: 70-90% of trichloromethane, 0.6-20% of ethanol, 10-40% of silica sol, 0.2-1% of coupling agent, 0.2-1% of penetrating agent and 100% of total mass percentage content.

2. The polishing solution for 3D printing molds as defined in claim 1, wherein the coupling agent is any one or a mixture of several of siloxane coupling agents of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, N- β - (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, gamma-glycidoxypropyltrimethoxysilane and gamma- (2, 3-glycidoxy) propyltrimethoxysilane.

3. The 3D printing model polishing solution according to claim 1, characterized in that: the penetrating agent is any one or a mixture of more of penetrating agent JFC, rapid penetrating agent T, penetrating agent OE-35 and super-strong penetrating agent JFC-E.

4. The method for preparing the polishing solution for the 3D printing model according to any one of the claims 1 to 3, characterized by comprising the following steps:

1) preparing base liquid: weighing the raw materials in proportion, then pouring trichloromethane into ethanol at 15-30 ℃, and mixing uniformly;

2) pouring silica sol into the solution obtained in the step 1), and uniformly mixing; and then adding the coupling agent and the penetrating agent in sequence, and mixing uniformly to obtain the composite material.

5. The use method of the polishing solution for 3D printing models according to any one of the claims 1 to 3 is characterized by comprising the following steps:

1) polishing the 3D printing model polishing solution with the temperature of 15-30 ℃ in the 3D printing model, wherein the residence time in the 3D printing model is 10-30 s;

2) and drying the 3D printing model by using warm air at the temperature of 30-80 ℃ for 10-30 s.

Technical Field

The invention belongs to the technical field of 3D printing model polishing treatment, and particularly relates to 3D printing model polishing solution.

Technical Field

As an important sign of the third industrial revolution, 3D printing technology is fundamentally revolutionizing the production manner of the conventional manufacturing industry. The 3D printing technique is based on mathematical model files and uses a technique that uses materials such as powdered metal or thermoplastics to build objects by printing and stacking layer by layer.

Along with the popularization of 3D printer, more and more people contact the 3D printer to can produce more graceful, practical model through the 3D printer.

The melting laminated 3D printer is used for printing a model of an object on a working platform in a mode of spraying by a spray head layer by layer after thermoplastic materials such as PLA or ABS are melted. Due to the limitation of a 3D printing forming principle, the 3D printing model can form laminated textures in the Z-axis direction, the appearance of the model is influenced, and the application of the model in the industrial and civil markets is limited to a certain extent. The prior art has the following processing methods for 3D printing model laminated textures:

1) sanding with sand paper: when the sand paper is used for polishing, a little water needs to be added, the sand with different fineness needs to be used for polishing, and the parts have no luster after polishing.

2) And (3) acetone polishing: mainly utilizes the characteristics of dissolving ABS in acetone and the like to polish the model, and mainly uses acetone steam to fumigate the 3D model. However, acetone is toxic, flammable and explosive, and has irritation.

3) PLA polishing solution: the polishing solution is put into an operating vessel, the model is hung on a model base by an iron wire or a rope and then is immersed, but the model is not suitable to be immersed for a long time, and the existing PLA polishing solution is toxic and needs to be used carefully.

In addition, the steps of graying and color spraying are also utilized, but the 3D printing model is time-consuming to process due to the fact that the general structure is complex, the requirement on personnel is high, the efficiency is low, and the popularization and application of the 3D printing technology are seriously influenced.

Disclosure of Invention

The invention aims to solve the problems and provide a polishing solution for a 3D printing model. The polishing solution is used for polishing the 3D printing model, and each part of the model is contacted with the polishing solution by immersing the model into the polishing solution; the ethanol added into the trichloromethane can play a role of a stabilizer, destroy the decomposition of the trichloromethane to form phosgene, reduce the adverse effect on human bodies and the environment, is safe to operate and is beneficial to market popularization.

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

the polishing solution for the 3D printing model is characterized by comprising the following raw materials in percentage by mass: 70-90% of trichloromethane, 0.6-20% of ethanol, 10-40% of silica sol, 0.2-1% of coupling agent, 0.2-1% of penetrating agent and 100% of total mass percentage content.

Preferably, the coupling agent is any one or a mixture of more of siloxane coupling agents of gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, N- β - (aminoethyl) -gamma-aminopropylmethyldimethoxysilane, gamma-glycidoxypropyltrimethoxysilane and gamma- (2, 3-glycidoxy) propyltrimethoxysilane.

Preferably, the penetrating agent is any one or a mixture of more of penetrating agent JFC, rapid penetrating agent T, penetrating agent OE-35 and super-penetrating agent JFC-E.

Preferably, the preparation method of the polishing solution for the 3D printing model comprises the following steps:

1) preparing base liquid: weighing the raw materials in proportion, then pouring trichloromethane into ethanol at 15-30 ℃, and mixing uniformly;

2) pouring silica sol into the solution obtained in the step 1), and uniformly mixing; and then adding the coupling agent and the penetrating agent in sequence, and mixing uniformly to obtain the composite material.

Preferably, the method for using the polishing solution for 3D printing model comprises the following steps:

1) polishing the 3D printing model polishing solution with the temperature of 15-30 ℃ in the 3D printing model, wherein the residence time in the 3D printing model is 10-30 s;

2) and drying the 3D printing model by using warm air at the temperature of 30-80 ℃ for 10-30 s.

In the present application, chloroform is used as the dissolved thermoplastic material; ethanol is used as a stabilizer, and phosgene generated by trichloromethane due to visible light is avoided. The silica sol is matched with other raw materials, and trichloromethane molecules are adsorbed on the surface of the silica sol molecules by utilizing the higher specific surface area and adsorption performance of the silica sol, so that the dispersion degree of the trichloromethane is improved, and the performance of the polishing solution is improved; in the formula, the coupling agent can reduce the viscosity of the polishing solution and improve the dispersion degree of each component in the polishing solution so as to improve the polishing effect; penetrant: the surface tension of the liquid is reduced, and the contact area between the polishing liquid and the polishing model is increased.

Compared with the prior art, the invention has the beneficial effects that:

the solution is used for polishing the 3D printing model, and each part of the model is contacted with the polishing solution by immersing the model in the polishing solution.

And (II) polishing the model in a dissolving and curing mode, and eliminating the laminated texture on the surface of the model to ensure that the model has certain gloss and better texture.

And (III) ethanol is added into the trichloromethane, so that the trichloromethane can play a role of a stabilizer, the trichloromethane is damaged and decomposed to form phosgene, the adverse effect on human bodies and the environment is reduced, the operation is safe, and the market popularization is facilitated.

And fourthly, the polishing treatment solution for the 3D printing model is simple in preparation method, simple and convenient to use and good in application prospect.

Drawings

FIG. 1 is a comparison of the surface of a model treated with the polishing solution described in the present application with that of an untreated model, and it can be seen that the model treated with the polishing solution described in the present application has a certain gloss and a good texture.

Detailed Description

In order that the present disclosure may be more readily understood, the process of the present disclosure will now be described in further detail with reference to specific embodiments thereof. It should not be understood that the scope of the above-described subject matter of the present invention is limited to the following examples.

As used herein, unless otherwise specified, all percentages are by mass, i.e., wt%.

The following test method of the 3D printing model:

1. appearance of the workpiece

Observing the unpolished 3D printing model surface by naked eyes, and recording as OK if the model surface is flat and has no concave and convex parts; otherwise, NO.

2. Surface gloss of work

The gloss of the surface of each polished work piece was measured using a micro gloss meter A-4430 (BYK, Germany).

3. Polishing time

And recording the residence time of the 3D printing model in the polishing solution by using a stopwatch.