阅读说明：本技术 一种耐高温软瓷硅胶模具的制备工艺 (Preparation process of high-temperature-resistant soft porcelain silica gel mold ) 是由 彭庆华 陆付 陈义 于 2021-01-06 设计创作，主要内容包括：本发明公开一种耐高温软瓷硅胶模具的制备工艺,通过三层固眼纱布夹设两层铁氟龙网,硅胶料将铁氟龙网孔填满,固眼纱布紧固在硅胶料和铁氟龙网之间,硅胶料、固眼纱布、铁氟龙网之间不会产生空隙,有效防止硅胶料和铁氟龙网之间发生相对滑动,从而提高硅胶模具的的硬度、增强硅胶模具的抗拉力和抗撕力。本发明通过使用耐高温胶为原料,硅胶模具在200-250℃下硅胶模具表面不鼓包,不起泡,不分层,通过设计软瓷花色模种,根据要求打造出丰富多样、天然纹理的逼真装饰效果,可以仿各种天然花岗岩,板岩,砂岩,陶土板,石材,木纹,皮纹,劈开砖,仿古砖等,应用范围广。(The invention discloses a preparation process of a high-temperature-resistant soft porcelain silica gel mold, wherein two layers of Teflon nets are clamped by three layers of eye-fixing gauzes, the meshes of the Teflon nets are filled with a silica gel material, the eye-fixing gauzes are fastened between the silica gel material and the Teflon nets, no gap is generated between the silica gel material, the eye-fixing gauzes and the Teflon nets, and relative sliding between the silica gel material and the Teflon nets is effectively prevented, so that the hardness of the silica gel mold is improved, and the tensile resistance and the tearing resistance of the silica gel mold are enhanced. The invention uses the high temperature resistant glue as the raw material, the surface of the silica gel mould does not bulge, bubble or layer at the temperature of 200-250 ℃, and the vivid decoration effect with rich and various natural textures is created according to the requirement by designing the pattern type of the soft porcelain, so that various natural granites, slates, sandstones, clay plates, stones, wood grains, dermatoglyphs, split bricks, archaized bricks and the like can be imitated, and the application range is wide.)

1. A preparation process of a high-temperature-resistant soft porcelain silica gel mold is characterized by comprising the following steps of: the method comprises the following steps:

(1) adhering the pattern of soft porcelain patterns to a prefabricated mould table, arranging a frame according to the size, and coating a release agent on the texture surface of the pattern to form a mould blank;

(2) stirring the high-temperature-resistant silica gel and a curing agent uniformly, and discharging bubbles under negative pressure to obtain a silica gel material;

(3) pouring a silica gel material on the mold blank, standing and curing at room temperature for 3-8h to form a first gel layer with the thickness of 3-5 mm;

(4) laying a first layer of eye-fixing gauze on the first adhesive layer, then laying a layer of teflon net again, and laying flat and tensioning;

(5) pouring a silica gel material on the Teflon net, the eye-fixing gauze and the first adhesive layer, standing and curing at room temperature for 3-8h to form a second adhesive layer with the thickness of 2-3 mm;

(6) laying a second layer of eye-fixing gauze on the second adhesive layer, and laying flat and tensioning;

(7) pouring silica gel on the second layer of eye-fixing gauze and the second adhesive layer to form a third adhesive layer, wherein the thickness of the third adhesive layer is directly filled with the preset thickness of the mold;

(8) and (3) after the silica gel material is solidified for 10-24 hours at room temperature, separating the silica gel material from the mold blank to obtain the high-temperature-resistant soft porcelain silica gel mold.

2. The preparation process of the high temperature resistant soft porcelain silica gel mold according to claim 1, characterized in that: and (1) enabling the mould blank to have soft porcelain color textures.

3. The preparation process of the high temperature resistant soft porcelain silica gel mold according to claim 1, characterized in that: the mass ratio of the high-temperature-resistant silica gel in the step (2) to the curing agent is 95: 5-98: 2.

4. the preparation process of the high temperature resistant soft porcelain silica gel mold according to claim 1, characterized in that: and (3) stirring for 5-10min in the step (2).

5. The preparation process of the high temperature resistant soft porcelain silica gel mold according to claim 1, characterized in that: in the step (2), the negative pressure is-0.1-0.5 Pa, and the bubble discharging time of the negative pressure is 1-5 min.

6. The preparation process of the high temperature resistant soft porcelain silica gel mold according to claim 1, characterized in that: and (4) the high-temperature-resistant soft porcelain silica gel mold in the step (8) has the texture of soft porcelain color.

Technical Field

The invention relates to the field of high-temperature-resistant silica gel molds, in particular to a preparation process of a high-temperature-resistant soft porcelain silica gel mold.

Background

The existing silica gel molds for soft porcelain production are different in formula, and cannot resist high temperature even when baked at a high temperature of 200-250 ℃, so that the surfaces of the molds often bulge, bubble and delaminate. The existing dies for producing soft porcelain are all small and loose, and are time-consuming, labor-consuming and waste in raw materials.

Disclosure of Invention

The invention aims to provide a preparation process of a high-temperature-resistant soft porcelain silica gel mold, and the silica gel mold prepared by the process overcomes the defects that the existing soft porcelain silica gel mold cannot resist high temperature, and the surface of the mold bulges, foams and is layered.

In order to achieve the purpose, the invention provides the following technical scheme:

a preparation process of a high-temperature-resistant soft porcelain silica gel mold comprises the following steps:

(1) adhering the pattern of soft porcelain patterns to a prefabricated mould table, arranging a frame according to the size, and coating a release agent on the texture surface of the pattern to form a mould blank;

(2) stirring the high-temperature-resistant silica gel and the curing agent uniformly, and discharging bubbles under negative pressure to prepare a silica gel material;

(3) pouring a silica gel material on the mold blank, standing and curing at room temperature for 3-8h to form a first gel layer with the thickness of 3-5 mm;

(4) laying a first layer of eye-fixing gauze on the first adhesive layer, then laying a layer of teflon net again, and laying flat and tensioning;

(5) pouring a silica gel material on the Teflon net, the eye-fixing gauze and the first adhesive layer, standing and curing at room temperature for 3-8h to form a second adhesive layer with the thickness of 2-3 mm;

(6) laying a second layer of eye-fixing gauze on the second adhesive layer, and laying flat and tensioning;

(7) pouring silica gel on the second layer of eye-fixing gauze and the second adhesive layer to form a third adhesive layer, wherein the thickness of the third adhesive layer is directly filled with the preset thickness of the mold;

(8) and (3) after the silica gel material is solidified for 10-24 hours at room temperature, separating the silica gel material from the mold blank to obtain the high-temperature-resistant soft porcelain silica gel mold.

Preferably, the mass ratio of the high-temperature-resistant silica gel to the curing agent in the step (2) is 95: 5-98: 2.

preferably, the stirring time in the step (2) is 5-10 min.

Preferably, the negative pressure in the step (2) is-0.1-0.5 Pa, and the bubble discharging time under the negative pressure is 1-5 min.

Preferably, the high temperature resistant soft porcelain silica gel mold in the step (8) has the texture of soft porcelain color.

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

1. the invention simplifies the preparation process of the soft porcelain silica gel mold, reduces the cost and saves the time.

2. The high-temperature-resistant soft porcelain silica gel mold prepared by the invention has the advantages that the surface of the silica gel mold does not bulge, bubble or layer at the temperature of 200-250 ℃, and the service performance is improved.

3. According to the invention, through designing the soft porcelain design and color model, the high-temperature-resistant soft porcelain silica gel mold has the texture of the soft porcelain design and color, and further, a soft porcelain product with vivid decoration effect, which is rich and various, and has natural texture, is manufactured according to requirements. The prepared high-temperature-resistant soft porcelain silica gel mold can be used for imitating various natural granites, slates, sandstones, clay plates, stones, wood grains, dermatoglyphs, split bricks, archaized bricks and the like, and has wide application range.

Detailed Description

The present invention is further described with reference to the following examples, which should not be construed as limiting the scope of the invention.

The reagents or instruments used in the present invention are not indicated by manufacturers, and are all conventional products commercially available.

Example 1

A preparation process of a high-temperature-resistant soft porcelain silica gel mold comprises the following steps:

(1) adhering a mold seed of soft porcelain patterns to be produced on a prefabricated mold table, arranging a frame according to the size, and coating a release agent on the texture surface of the mold seed to form a mold blank;

(2) the mass ratio is 95: 5, stirring the high-temperature-resistant silica gel and the curing agent for 5min, and discharging bubbles under negative pressure, wherein the negative pressure is-0.1 Pa, and the bubble discharging time under negative pressure is 1min to prepare the silica gel;

(3) pouring silica gel material on the mold blank, standing and curing for 3 hours at room temperature, wherein the surface layer of the silica gel material is in a semi-cured state to form a first adhesive layer with the thickness of 3 mm;

(4) laying a first layer of eye-fixing gauze on the first adhesive layer, then laying a layer of teflon net again, and laying flat and tensioning;

(5) pouring a silica gel material on a teflon net, a mesh fixing gauze and a first adhesive layer, standing and curing at room temperature for 3 hours, wherein the surface layer of the silica gel material is in a semi-cured state to form a second adhesive layer with the thickness of 1 mm;

(6) laying a second layer of eye-fixing gauze on the second adhesive layer, and laying flat and tensioning;

(7) pouring silica gel on the second layer of eye-fixing gauze and the second adhesive layer to form a third adhesive layer, wherein the thickness of the third adhesive layer is directly filled with the preset thickness of the mold;

(8) and (3) curing the silica gel material at room temperature for 10 hours, and separating the silica gel material from the mold blank to obtain the high-temperature-resistant soft porcelain silica gel mold with the texture of the soft porcelain color.

Example 2

(1) Adhering a mold seed of soft porcelain patterns to be produced on a prefabricated mold table, coating a release agent on the texture surface of the mold seed, and arranging a frame according to the size to form a mold blank;

(2) the mass ratio is 98: 2, stirring the high-temperature-resistant silica gel and the curing agent for 6min, and discharging bubbles under negative pressure, wherein the negative pressure is-0.3 Pa, and the bubble discharging time under negative pressure is 2min to prepare the silica gel;

(3) pouring silica gel material on the mold blank, standing and curing for 4 hours at room temperature to form a first gel layer with the thickness of 4 mm;

(4) laying a first layer of eye-fixing gauze on the first adhesive layer, then laying a layer of teflon net again, and laying flat and tensioning;

(5) pouring a silica gel material on the Teflon net, the eye-fixing gauze and the first adhesive layer, standing and curing at room temperature for 6 hours to form a second adhesive layer with the thickness of 2 mm;

(6) laying a second layer of eye-fixing gauze on the second adhesive layer, and laying flat and tensioning;

(7) pouring silica gel on the second layer of eye-fixing gauze and the second adhesive layer to form a third adhesive layer, wherein the thickness of the third adhesive layer is directly filled with the preset thickness of the mold;

(8) and (3) curing the silica gel material at room temperature for 15h, and separating the silica gel material from the mold blank to obtain the high-temperature-resistant soft porcelain silica gel mold, wherein the mold has the texture of soft porcelain color.

Example 3

(1) Sticking the pattern of soft porcelain to be produced on a prefabricated mould table, coating a release agent on the texture surface of the pattern, and arranging a frame according to the size to form a mould blank;

(2) the mass ratio is 97: 3, stirring the high-temperature-resistant silica gel and the curing agent for 8min, and discharging bubbles under negative pressure, wherein the negative pressure is-0.5 Pa, and the bubble discharging time under negative pressure is 3min to prepare the silica gel;

(3) pouring silica gel material on the mold blank, standing and curing for 6 hours at room temperature to form a first gel layer with the thickness of 5 mm;

(4) laying a first layer of eye-fixing gauze on the first adhesive layer, then laying a layer of teflon net again, and laying flat and tensioning;

(5) pouring a silica gel material on the Teflon net, the eye-fixing gauze and the first adhesive layer, standing and curing at room temperature for 4 hours to form a second adhesive layer with the thickness of 3 mm;

(6) laying a second layer of eye-fixing gauze on the second adhesive layer, and laying flat and tensioning;

(7) pouring silica gel on the second layer of eye-fixing gauze and the second adhesive layer to form a third adhesive layer, wherein the thickness of the third adhesive layer is directly filled with the preset thickness of the mold;

(8) and (3) curing the silica gel material at room temperature for 18h, and separating the silica gel material from the mold blank to obtain the high-temperature-resistant soft porcelain silica gel mold, wherein the mold has the texture of soft porcelain color.

Example 4

(1) Adhering a mold seed of soft porcelain patterns to be produced on a prefabricated mold table, coating a release agent on the texture surface of the mold seed, and arranging a frame according to the size to form a mold blank;

(2) the mass ratio is 98: 2 stirring the high-temperature-resistant silica gel and the curing agent for 10min, and exhausting bubbles under negative pressure, wherein the negative pressure is-0.5 Pa, and the bubble exhausting time under negative pressure is 5min to prepare the silica gel material, so that the mould blank has the texture of the soft porcelain color.

(3) Pouring silica gel material on the mold blank, standing and curing for 8 hours at room temperature to form a first gel layer with the thickness of 3 mm;

(4) laying a first layer of eye-fixing gauze on the first adhesive layer, then laying a layer of teflon net again, and laying flat and tensioning;

(5) pouring a silica gel material on the Teflon net, the eye-fixing gauze and the first adhesive layer, standing and curing at room temperature for 8 hours to form a second adhesive layer with the thickness of 1 mm;

(6) laying a second layer of eye-fixing gauze on the second adhesive layer, and laying flat and tensioning;

(7) pouring silica gel on the second layer of eye-fixing gauze and the second adhesive layer to form a third adhesive layer, wherein the thickness of the third adhesive layer is directly filled with the preset thickness of the mold;

(8) and (3) curing the silica gel material at room temperature for 24 hours, and separating the silica gel material from the mold blank to obtain the high-temperature-resistant soft porcelain silica gel mold, wherein the mold has the texture of soft porcelain color.

In examples 1 to 4, the high temperature resistant soft porcelain silica gel mold was designed to have the texture of soft porcelain design by pre-designing the soft porcelain design and color mold, and further, a soft porcelain product with vivid decoration effect of abundant and various natural textures was created as required.

In embodiments 1 to 4, two layers of teflon nets are sandwiched between three layers of eye-fixing gauze, the holes of the teflon nets are filled with the silicone rubber material, the eye-fixing gauze is fastened between the silicone rubber material and the teflon nets, no gap is generated between the silicone rubber material, the eye-fixing gauze and the teflon nets, and relative sliding between the silicone rubber material and the teflon nets is effectively prevented, so that the hardness of the silicone mold is improved, and the tensile strength and the tearing resistance of the silicone mold are enhanced.

The high temperature resistant soft porcelain silica gel mold prepared in the embodiment 1-4 uses high temperature resistant glue as a raw material, and the silica gel mold does not bulge, bubble or layer on the surface thereof at the temperature of 200-250 ℃, and has the tensile force of 40N, the tearing force of 42N and the hardness of 28.

The technical solutions provided by the embodiments of the present invention are described in detail above, and the principles and embodiments of the present invention are explained herein by using specific examples, and the descriptions of the embodiments are only used to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the present description should not be construed as a limitation to the present invention.