CN112322044A - Preparation method of silicone rubber lost wax mould for artware with complex shape - Google Patents

Preparation method of silicone rubber lost wax mould for artware with complex shape Download PDF

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Publication number
CN112322044A
CN112322044A CN202011321552.4A CN202011321552A CN112322044A CN 112322044 A CN112322044 A CN 112322044A CN 202011321552 A CN202011321552 A CN 202011321552A CN 112322044 A CN112322044 A CN 112322044A
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wax
parts
artware
mold
handicraft
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李彦
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Funan Yunqiang Rattan Willow Handicraft Co ltd
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Funan Yunqiang Rattan Willow Handicraft Co ltd
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Priority to CN202011321552.4A priority Critical patent/CN112322044A/en
Publication of CN112322044A publication Critical patent/CN112322044A/en
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L83/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon with or without sulfur, nitrogen, oxygen or carbon only; Compositions of derivatives of such polymers
    • C08L83/04—Polysiloxanes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C33/00—Moulds or cores; Details thereof or accessories therefor
    • B29C33/38—Moulds or cores; Details thereof or accessories therefor characterised by the material or the manufacturing process
    • B29C33/40—Plastics, e.g. foam or rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/10—Transparent films; Clear coatings; Transparent materials
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend

Abstract

The invention discloses a preparation method of a silicone rubber lost wax mould for artware with a complex shape, belongs to the technical field of high polymer materials, and discloses a rapid mould manufacturing method. The silicon rubber has good flexibility and elasticity, so that the handicraft product with a complex structure, fine patterns and a certain reverse drawing mode inclination can be cloned for manufacturing. The silicon rubber rapid die has the characteristics of short manufacturing period, high product quality, capability of obtaining a plurality of parts in a short period, small deformation, high temperature resistance, acid and alkali resistance and low expansion coefficient. The shrinkage rate is low, the surface molecule inertia is strong, the number of times of mold compounding is large, the shrinkage rate of the mold silica gel is low, the tensile resistance and the elasticity are good, the tearing strength is good, the artware is attractive, and the artware is not deformed. The silica gel is high temperature resistant, still soft under low temperature, can be used for ice-plastic artware, has very good simulation effect, and is a compound die and a precise good die for preparing complex artware.

Description

Preparation method of silicone rubber lost wax mould for artware with complex shape
Technical Field
The invention relates to the technical field of high polymer materials, in particular to a preparation method of a silicon rubber lost wax mould for artware with a complex shape.
Background
The traditional handicraft is produced by traditional technology, such as carving, moulding, carving, cast metal, weaving, etc. it features that there are many hand-operated products, and the development of modern industries including clay moulding, dough moulding, sugar moulding, etc. can not only provide new material to produce handicraft, but also provide new material to reproduce and produce batch mould on single handicraft, such as metal mould of organic silicon rubber mould, concrete mould, etc. to make the handicraft be produced in batch. Some varieties can also be produced by mechanical line production. The original connotation of the art sculpture is continuously extended in modern society, the improvement of social productivity increases the demands of people on material and cultural life, and the cultural communication of east and west also fuses and widens the artistic style of multiple culture. The building artware, the decoration artware, the furnishing artware and the environment artware which are made of different materials, have different processes, different shapes and different styles are developed greatly, the situations of multiple varieties and vigorous demands are presented, and the application range comprises the aspects of life such as building design, house layer decoration, indoor furnishing, municipal engineering, tourist attractions, public places, landscape parks and the like. When the artware is complex in shape and high in precision, but the cost is required to be controlled, the forming of artware with complex processes, such as artware which cannot be demoulded by using a gypsum die, and the like, is extremely difficult. The lost wax method is an ancient method for casting metal in China, and has own technological characteristics and artistic style. In the processing of polymeric materials, no lost wax process exists. However, the conventional process is only applied in a narrow range under the limitation of the production relationship between the sealing and the semi-sealing semi-colonial production in old China, is mainly used for casting artistic bronze castings which cannot be obtained by a common method and religious statues and the like, and cannot be converted into the modern precision casting process. Under the guidance of ancient and present guidelines, the traditional lost wax casting still has application in production at present, and is a precious scientific and technical heritage created by workers and people as well as a mud model and an iron model. The silicon rubber mold is a cavity formed by pouring elastomer silicon rubber and is a mold with a simpler structure. The method can directly use a product real sample as a process male die, place the process male die on a bottom plate, surround a die frame, pour liquid silicon rubber into the die and solidify the silicon rubber into a silicon rubber die at room temperature, but the existing silicon rubber die is convenient to manufacture but poor in design, when a part with a complex shape is accurately copied, the silicon rubber die is an elastomer female die (without a male die), the accuracy is poor, the existing silicon rubber die is short in service life and difficult to pour deep-hole thin-wall parts, the existing silicon rubber die is not suitable for pouring precision process products with complex structure and high accuracy requirement, the service life is usually 10-20 artworks and short in service life, and the existing organic silicon rubber die is a soft film, needs a single outer die or a combined outer die according to the complexity of the artworks before the die is removed, so that the field of using the silicon rubber die in the artworks manufacturing field is not very troublesome, has been plagued by the above problems. At present, a commodity with a silicone rubber mold for a complex handicraft or a corresponding preparation method is in the market or in the prior art, and a person skilled in the art needs to develop a silicone rubber lost wax method mold manufacturing method for a handicraft so as to meet the performance requirements and market requirements in the production of the actual handicraft.
Disclosure of Invention
A preparation method of a silicon rubber lost wax mould for artware with a complex shape comprises the following processing steps: (1) adding 100-120 parts by weight of polydimethoxysiloxane, 8-10 parts by weight of vinyltriacetoxysilane, 4-6 parts by weight of aminomethyl isobutyl trimethoxy silane and 50-60 parts by weight of white carbon black into a high-speed mixer, mixing for 3-4 hours at the temperature of below 60 ℃, heating to 150-160 ℃, continuously mixing, devolatilizing with nitrogen, stopping heating under the protection of nitrogen for 1-2 hours, adding 100-110 parts by weight of dihydroxy polydimethylsiloxane, 5-6 parts by weight of polydimethoxysiloxane and 50-60 parts by weight of barium sulfate, continuously mixing for 1-2 hours, dispersing and grinding the mixture on a three-roll grinder under the pressure of 1-2 MPa to prepare a base material, adding 4-6 parts by weight of polydimethoxysiloxane, 32-36 parts by weight of propyl polysilicate, 1.3-1.5 parts by weight of dibutyl tin dilaurate catalyst and 1.2-1.4 parts by weight of cross-linking agent, uniformly mixing, defoaming for 1-3 minutes under negative pressure to obtain a silicone rubber mixture; (2) mixing wax materialMachining the materials into the same shape of a silicon rubber lost wax method mould for the artware with the complex shape by using a machine, and taking the silicon rubber lost wax method mould as a wax mould for a lost wax method; (3) refrigerating the wax mold for 1-2 h by using a refrigerator at the temperature of-5 ℃, and brushing a layer of Si-69 silane coupling agent 13-14 g/m on the surfaces of the inner cavity and the outer cavity of the wax mold2(ii) a Covering molding sand outside the wax mold obtained in the step (3), completely wrapping the wax mold, performing bonding molding to form a sand mold, and reserving a filling port, an air outlet and a wax outlet hole in the sand mold; (4) putting the molding sand in a shade place, and air-drying the molding sand at the room temperature of 24-30 ℃ for 12-24 h, compacting the molding sand, wherein the compaction rate is 30-35% to obtain a wax-containing film air-dried sand mold; (5) and (2) adding the silicone rubber mixture containing the wax film obtained in the step (1) into a filling port of an air-dried sand mold, heating the sand mold to the temperature of 90-138 ℃, stopping heating when no wax flows out of a wax outlet, cooling to room temperature, cleaning, washing with water, and drying to obtain the silicone rubber lost wax mold for the artware with the complex shape.
As a further scheme of the invention, the wax material comprises Fischer-Tropsch wax, disodium sebacate, zinc stearate and terpene resin, wherein the mass of the Fischer-Tropsch wax accounts for 90% of the total mass of the wax material, the mass of the disodium sebacate accounts for 3% of the total mass of the wax material, the mass of the zinc stearate accounts for 2% of the total mass of the wax material, and the mass of the terpene resin accounts for 5% of the total mass of the wax material, the weighed blocky Fischer-Tropsch wax is put into a crucible, the mixture is heated to 90-95 ℃, the weighed zinc stearate is added after the Fischer-Tropsch wax is fully melted into a wax liquid, the mixture is continuously heated to 130-135 ℃, the weighed terpene resin is added with a stirring rod, the temperature of the wax liquid is continuously heated to 90-100 ℃, the mixed liquid is obtained after the terpene resin is fully melted, the mixed liquid is fully stirred, the disodium sebacate is added after the heating is stopped and the temperature is reduced to 80-90 ℃, the, standing in shade.
In a further embodiment of the present invention, the curing agent is one of methyltributanone oxime silane, methyltriacetoxysilane and p-benzoquinone dioxime.
As a further scheme of the invention, the artware with the complex shape is one of a glass artware, a resin artware, a wax artware, an ice-plastic artware, a clay-plastic artware, a surface-plastic artware, a sugar-plastic artware and a gypsum-plastic artware.
The molding sand is clay molding sand, and the molding sand is prepared by uniformly mixing 60-80 parts by weight of sea sand, 1-2 parts by weight of diatomite, 2-4 parts by weight of fly ash, 1-3 parts by weight of plant ash, 2-4 parts by weight of hemp cut, 1-3 parts by weight of straw shell and 30-40 parts by weight of water for 1-2 minutes.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the silicon rubber mold can be prepared in a short time by preparing the silicon rubber mixture containing the cross-linking agent, uniformly mixing and pouring the mixture into the sand mold containing the wax mold. Has excellent demolding performance and high copying size stability. Has excellent fluidity, and can accurately reproduce fine and complex shapes such as fingerprints and wool fabric grains. The method is characterized in that a simple method of 'plum peach stiffness' is adopted, mechanical processing is carried out on a wax material with the same shape as a silicon rubber mould for a handicraft with a complex shape and a handicraft with a complex shape, and then a target silicon rubber mould is prepared by a 'dewaxing method'. The method has the advantages that a large amount of resource waste is avoided, the design is good, when the parts with complex shapes are accurately copied, the silicon rubber mold can be an elastomer female mold or a male mold, the accuracy is high, the service life is long, deep-hole thin-wall parts can be easily poured, the method is suitable for pouring precision process products with complex structures and high precision requirements, hard outer membrane support is not needed during use, and the use is simple, convenient and quick.
Compared with the prior art, the invention has the following advantages:
the preparation method disclosed by the invention is simple and efficient, and the silicon rubber lost wax method mould for preparing the artware with the complex shape is low in shrinkage rate; the curing agent is not limited by the thickness of the product and can be deeply cured; the tensile strength and the tear strength are high; the anti-reversion property is realized at the high temperature of 200 ℃; the edible artware such as dough modeling, sugar modeling and the like can be prepared without toxicity and pollution. The silicon rubber can wrap the female part in all spaces, the prepared silicon rubber mold has good transparency, the condition in the mold can be clearly seen in the processes of mold opening, mold making and part manufacturing, and the working progress state can be conveniently mastered at any time. It does not react with the casting resin, is suitable for manufacturing precise mould and casting mould, and can be used for simply copying artistic handicraft articles, such as plaster handicraft article, glass handicraft article, resin handicraft article, wax handicraft article, ice-moulding handicraft article, clay moulding handicraft article, surface moulding handicraft article, sugar moulding handicraft article, etc. The mould has simple manufacturing process, does not damage the prototype and has good simulation. The silicone rubber has excellent ageing resistance, good elasticity, high strength, especially high tearing strength, convenient shape taking, no deformation and long service life.
Detailed Description
The present invention is further illustrated by the following examples, which are not intended to limit the scope of the present invention in any way.
Example 1
A preparation method of a silicon rubber lost wax mould for artware with a complex shape comprises the following processing steps: (1) adding 120 parts of polydimethoxysiloxane, 10 parts of vinyl triacetoxysilane, 6 parts of aminomethyl isobutyl trimethoxy silane and 60 parts of white carbon black into a high-speed mixer according to parts by weight, mixing at below 60 deg.C for 4h, heating to 160 deg.C, continuing mixing, devolatilizing with nitrogen gas, stopping heating under nitrogen gas protection for 2h, adding 110 parts dihydroxy polydimethylsiloxane, 6 parts polydimethoxysiloxane and 60 parts barium sulfate, continuing mixing for 2h, finally, placing the mixture on a three-roll mill, dispersing and grinding under the pressure of 2MPa to prepare a base material, adding 6 parts of polydimethoxysiloxane, 36 parts of propyl polysilicate, 1.5 parts of dibutyl tin dilaurate catalyst and 1.4 parts of cross-linking agent methyl triacetoxysilane, uniformly mixing, and defoaming under negative pressure for 3 minutes to obtain a silicon rubber mixture; (2) machining a wax material into the same shape of the silicon rubber lost wax mould for the artware with the complex shape by using a machine, wherein the wax material is used as a wax mould for the lost wax method; (3) refrigerating the wax mold for 2h by using a refrigerator at the temperature of-5 ℃, and brushing a layer of Si-69 silane coupling agent on the surfaces of the inner cavity and the outer cavity of the wax mold at a concentration of 14g/m2(ii) a Covering molding sand outside the wax mold obtained in the step (3), completely wrapping the wax mold, performing bonding molding to form a sand mold, and reserving a filling port, an air outlet and a wax outlet hole in the sand mold; (4) Putting the molding sand in a shade, and air-drying the molding sand at the room temperature of 30 ℃ for 24h, compacting the molding sand, wherein the compaction rate is 30% to obtain a wax-containing film air-dried sand mold; (5) and (2) adding the silicone rubber mixture wax-containing film air-dried sand mold obtained in the step (1) into a filling port, heating the sand mold to 138 ℃, stopping heating when no wax flows out of a wax outlet, cooling to room temperature, cleaning, washing with water, and drying to obtain the silicone rubber lost wax mold for the artware with the complex shape.
As a further aspect of the invention, the wax material is prepared from fischer-tropsch wax, disodium sebacate, the wax comprises zinc stearate and terpene resin, wherein the mass of Fischer-Tropsch wax accounts for 90% of the total mass of a wax material, the mass of sebacic acid disodium salt accounts for 3% of the total mass of the wax material, the mass of zinc stearate accounts for 2% of the total mass of the wax material, and the mass of terpene resin accounts for 5% of the total mass of the wax material.
As a further scheme of the invention, the silicon rubber lost wax method mould for the artware with the complex shape disclosed by the invention is suitable for artware with the complex shape such as glass artware, resin artware, wax artware, ice-plastic artware, clay-plastic artware, surface-plastic artware, sugar-plastic artware, gypsum-plastic artware and the like.
The molding sand is clay molding sand which is prepared by uniformly mixing 80 parts by weight of sea sand, 2 parts by weight of diatomite, 4 parts by weight of fly ash, 3 parts by weight of plant ash, 4 parts by weight of hemp cut, 3 parts by weight of straw shell and 40 parts by weight of water.
Example 2
A preparation method of a silicon rubber lost wax mould for artware with a complex shape comprises the following processing steps: (1) adding 100 parts of polydimethoxysiloxane, 8 parts of vinyl triacetoxysilane, 4 parts of aminomethyl isobutyl trimethoxy silane and 50 parts of white carbon black into a high-speed mixer in parts by weight, mixing at 60 deg.C for 3h, heating to 150 deg.C, continuing mixing, devolatilizing with nitrogen, stopping heating under nitrogen protection for 1h, adding 100 parts dihydroxy polydimethylsiloxane, 5 parts polydimethoxysiloxane and 60 parts barium sulfate, continuing mixing for 1h, finally, placing the mixture on a three-roll mill, dispersing and grinding under the pressure of 1MPa to prepare a base material, adding 4 parts of polydimethoxysiloxane, 32 parts of propyl polysilicate, 1.3 parts of dibutyl tin dilaurate catalyst and 1.2 parts of cross-linking agent methyl tributyl ketoxime silane, uniformly mixing, and defoaming under negative pressure for 1 minute to obtain a silicon rubber mixture; (2) machining a wax material into the same shape of the silicon rubber lost wax mould for the artware with the complex shape by using a machine, wherein the wax material is used as a wax mould for the lost wax method; (3) refrigerating the wax mold for 1h by using a refrigerator at the temperature of-5 ℃, and brushing a layer of Si-69 silane coupling agent 13g/m2 on the surfaces of the inner cavity and the outer cavity of the wax mold; covering molding sand outside the wax mold obtained in the step (3), completely wrapping the wax mold, performing bonding molding to form a sand mold, and reserving a filling port, an air outlet and a wax outlet hole in the sand mold; (4) putting the molding sand in a shade place, and airing at 24 ℃ for 24h, compacting, wherein the compaction rate is 30% to obtain a wax-containing film air-dried sand mold; (5) and (2) adding the silicone rubber mixture wax-containing film air-dried sand mold obtained in the step (1) into a filling port, heating the sand mold to 138 ℃, stopping heating when no wax flows out of a wax outlet, cooling to room temperature, cleaning, washing with water, and drying to obtain the silicone rubber lost wax mold for the artware with the complex shape.
As a further aspect of the invention, the wax material is prepared from fischer-tropsch wax, disodium sebacate, the wax comprises zinc stearate and terpene resin, wherein the mass of Fischer-Tropsch wax accounts for 90% of the total mass of a wax material, the mass of sebacic acid disodium salt accounts for 3% of the total mass of the wax material, the mass of zinc stearate accounts for 2% of the total mass of the wax material, and the mass of terpene resin accounts for 5% of the total mass of the wax material.
As a further scheme of the invention, the silicon rubber lost wax method mould for the artware with the complex shape disclosed by the invention is suitable for artware with the complex shape such as glass artware, resin artware, wax artware, ice-plastic artware, clay-plastic artware, surface-plastic artware, sugar-plastic artware, gypsum-plastic artware and the like.
The molding sand is clay molding sand which is prepared by uniformly mixing 60 parts by weight of sea sand, 1 part by weight of diatomite, 2 parts by weight of fly ash, 1 part by weight of plant ash, 2 parts by weight of hemp cut, 1 part by weight of straw shell and 30 parts by weight of water.
TABLE 1 test results of properties of silicone rubber lost wax mold material for handicraft articles with complicated shape in examples and comparative examples
Sample (I) Tensile strength/MPa Elongation at break/% Shore hardness Compression set% 150 ℃/24h High and low temperature resistance Service life/time Tear strength N/cm
Example 1 8.6 365 68.1 8.3 Without cracks 10000 45.3
Example 2 8.5 369 67.9 7.8 Without cracks 9500 45.3
Note: the tensile strength and the elongation at break are carried out according to the method HG/T3849; the hardness is carried out according to the GB/T531 method; the compression permanent deformation technology GB/T7759 is carried out, and the test conditions are as shown in the serial number 4 of the table 1; the high and low temperature resistance test is carried out for 2 hours at the temperature of minus 60 ℃ and 250 ℃, then the steel is recovered for 1 hour at room temperature, and the phenomena of crack and embrittlement are observed to be avoided.
It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (5)

1. A preparation method of a silicon rubber lost wax mould for artware with a complex shape is characterized by comprising the following processing steps: (1) in a high-speed mixer, adding the components in parts by weightAdding 100-120 parts of polydimethoxysiloxane, 8-10 parts of vinyl triacetoxysilane, 4-6 parts of aminomethyl isobutyl trimethoxy silane and 50-60 parts of white carbon black, mixing for 3-4 h at the temperature below 60 ℃, heating to 150-160 ℃, continuing mixing, devolatilizing with nitrogen, stopping heating under the protection of nitrogen for 1-2 h, adding 100-110 parts of dihydroxy polydimethylsiloxane, 5-6 parts of polydimethoxysiloxane and 50-60 parts of barium sulfate, continuing mixing for 1-2 h, finally, putting the mixture on a three-roll grinder, dispersing and grinding under the pressure of 1-2 MPa to prepare a base material, adding 4-6 parts of polydimethoxysiloxane, 32-36 parts of propyl polysilicate, 1.3-1.5 parts of dibutyl tin dilaurate catalyst and 1.2-1.4 parts of a cross-linking agent, uniformly mixing, and defoaming under negative pressure for 1-3 minutes to obtain a silicon rubber mixture; (2) machining a wax material into the same shape of the silicon rubber lost wax mould for the artware with the complex shape by using a machine, wherein the wax material is used as a wax mould for the lost wax method; (3) refrigerating the wax mold for 1-2 h by using a refrigerator at the temperature of-5 ℃, and brushing a layer of Si-69 silane coupling agent 13-14 g/m on the surfaces of the inner cavity and the outer cavity of the wax mold2(ii) a Covering molding sand outside the wax mold obtained in the step (3), completely wrapping the wax mold, performing bonding molding to form a sand mold, and reserving a filling port, an air outlet and a wax outlet hole in the sand mold; (4) putting the molding sand in a shade place, and air-drying the molding sand at the room temperature of 24-30 ℃ for 12-24 h, compacting the molding sand, wherein the compaction rate is 30-35% to obtain a wax-containing film air-dried sand mold; (5) and (2) adding the silicone rubber mixture containing the wax film obtained in the step (1) into a filling port of an air-dried sand mold, heating the sand mold to the temperature of 90-138 ℃, stopping heating when no wax flows out of a wax outlet, cooling to room temperature, cleaning, washing with water, and drying to obtain the silicone rubber lost wax mold for the artware with the complex shape.
2. The method for preparing the silicone rubber lost wax mold for the artware with the complex shape according to claim 1, wherein the wax material comprises Fischer-Tropsch wax, disodium sebacate, zinc stearate and terpene resin, the mass of the Fischer-Tropsch wax accounts for 90% of the total mass of the wax material, the mass of the disodium sebacate accounts for 3% of the total mass of the wax material, the mass of the zinc stearate accounts for 2% of the total mass of the wax material, and the mass of the terpene resin accounts for 5% of the total mass of the wax material, the weighed blocky Fischer-Tropsch wax is put into a crucible, the heating is carried out to 90-95 ℃, the weighed zinc stearate is added after the Fischer-Tropsch wax is fully melted into wax liquid, the heating is continued to 130-135 ℃, the weighed terpene resin is continuously stirred by a stirring rod, the temperature of the weighed terpene resin is continuously heated to 90-100 ℃, the mixed liquid is obtained after the terpene resin is fully melted, the mixed liquid is fully stirred uniformly, the heating is stopped, the temperature is reduced to 80-90 ℃, and then the weighed, stirring, and standing in shade.
3. The method for preparing the silicone rubber lost wax mold for the artware with the complex shape according to claim 1, wherein the curing agent is one of methyltributanone oxime silane, methyltriacetoxysilane and p-benzoquinone dioxime.
4. The method for preparing the silicone rubber lost wax mold for the artware with the complex shape according to claim 1, wherein the molding sand is clay molding sand, and the molding sand is prepared by uniformly mixing 60-80 parts by weight of sea sand, 1-2 parts by weight of diatomite, 2-4 parts by weight of fly ash, 1-3 parts by weight of plant ash, 2-4 parts by weight of hemp cut, 1-3 parts by weight of straw shell and 30-40 parts by weight of water.
5. The complex-shaped handicraft of claims 1-4, wherein said complex-shaped handicraft is one of glass handicraft, resin handicraft, wax handicraft, ice-plastic handicraft, clay-plastic handicraft, surface-plastic handicraft, sugar-plastic handicraft, and plaster-plastic handicraft.
CN202011321552.4A 2020-11-23 2020-11-23 Preparation method of silicone rubber lost wax mould for artware with complex shape Withdrawn CN112322044A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113956670A (en) * 2021-11-23 2022-01-21 漯河市罗弗文具制造有限公司 Organic silicon-based fully transparent clay and preparation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113956670A (en) * 2021-11-23 2022-01-21 漯河市罗弗文具制造有限公司 Organic silicon-based fully transparent clay and preparation method thereof

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Application publication date: 20210205