CN110643171B - Silica gel sculpture and preparation process thereof - Google Patents
Silica gel sculpture and preparation process thereof Download PDFInfo
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- CN110643171B CN110643171B CN201910996891.3A CN201910996891A CN110643171B CN 110643171 B CN110643171 B CN 110643171B CN 201910996891 A CN201910996891 A CN 201910996891A CN 110643171 B CN110643171 B CN 110643171B
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
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- 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
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Abstract
The invention discloses a silica gel sculpture and a preparation process thereof, relates to the technical field of sculpture processing, and solves the problem that the overall application effect of the silica gel sculpture is poor due to poor overall structural strength of the silica gel sculpture with good elastic performance. A silica gel sculpture comprises the following components in parts by weight: 20-30 parts of polyurethane; 30-50 parts of silicon rubber; 35-55 parts of polyether polyol; 15-25 parts of toluene diisocyanate; 0.1-0.5 part of surfactant; 6-8 parts of a flame retardant; 12-18 parts of reinforcing filler; 0.3-0.5 part of silane coupling agent; 2-6 parts of glass fiber; 4-9 parts of brucite fiber; 5-10 parts of fly ash. The silica gel sculpture has good elastic performance, high overall structural strength and good overall application effect.
Description
Technical Field
The invention relates to the technical field of sculpture processing, in particular to a silica gel sculpture and a preparation process thereof.
Background
Silica gel sculpture is polymer organosilicon rubber sculpture, is the emulation people sculpture that has aroused in recent years, and it has been used for reference the molding art of wax statue, but has the advantage that the wax statue does not have yet, and works have high emulation, and the high quality is felt, easily colors, and what easily preserve is again, and the personage effect is more lifelike in waxy material, and the elasticity skin feel on its surface is stronger, more and more receives memorial hall and museum's favorite.
In chinese patent publication No. CN109835099A, a method for producing a simulated human head sculpture is disclosed, which comprises the following steps: firstly, making a head sculpture of a person to be produced into a head model; then, a detachable head model outer die is made of materials outside the head model; combining the external molds, and filling materials into the internal molds to form hollow internal molds; uniformly coating the curable liquid silica gel on the whole head of a real person shaved into a head to obtain a silica gel head sleeve with skin textures of the head of the real person; sleeving the silica gel head sleeve on the hollow inner mold, and adsorbing the silica gel head sleeve on the hollow inner mold by using a vacuum suction device; coating silica gel on the outer surface of the silica gel head sleeve, and then shaping by using a curable material to obtain a product outer mold; and injecting silica gel into the outer mold of the product to obtain a semi-finished product of the simulated human head sculpture, and carrying out corresponding finishing.
In the above application, the method for simulating the head sculpture of the person can very conveniently and rapidly obtain textures which are as good as the skin of the person on the silica gel sculpture of the head of the person, the texture looks more real, the process is simple, the cost is relatively low, the molding period of the sculpture is shortened, but the texture of the silica gel is relatively soft, the method is not suitable for the requirements of some hard sculptures, the texture of the silica gel is strengthened, the overall elasticity of the silica gel sculpture is poor, the method is not beneficial to use and is damaged, the structural strength and the elastic performance of the silica gel sculpture are difficult to keep a relatively perfect balance state in the prior art, and therefore a new scheme is required to be provided to solve the problems.
Disclosure of Invention
The present invention is directed to a silica gel sculpture, which has good elasticity, high strength and good overall application effect, and aims to solve the above problems.
In order to achieve the first purpose, the invention provides the following technical scheme:
a silica gel sculpture comprises the following components in parts by weight:
20-30 parts of polyurethane;
30-50 parts of silicon rubber;
35-55 parts of polyether polyol;
15-25 parts of toluene diisocyanate;
0.1-0.5 part of surfactant;
6-8 parts of a flame retardant;
12-18 parts of reinforcing filler;
0.3-0.5 part of silane coupling agent;
2-6 parts of glass fiber;
4-9 parts of brucite fiber;
5-10 parts of fly ash.
By adopting the technical scheme, the polyurethane has good stability, chemical resistance, resilience and mechanical property, can ensure that the silica gel sculpture has good stable elasticity, and has the advantages of oil resistance, wear resistance, low temperature resistance, aging resistance, high hardness and the like. The silicon rubber has good temperature resistance and weather resistance, is not easy to be decomposed by ultraviolet light and ozone, is used as a main component of the silica gel sculpture, and can ensure that the silica gel sculpture keeps longer service life. The polyether polyol is a good dispersing agent and antistatic agent, is favorable for fully mixing raw materials of all components, and can ensure that polyurethane and silicon rubber have good bonding property. The toluene diisocyanate mainly plays a good role in curing and crosslinking so as to ensure the stability of the whole silica gel sculpture.
The glass fiber has high strength, the integral structural strength of the silica gel sculpture can be improved, the brucite fiber has excellent mechanical property and alkali resistance, the dispersibility of the instrument is good, and the brucite fiber can act together with the glass fiber, so that the integral compression strength and the integral breaking strength of the silica gel sculpture are greatly improved. The fly ash contains a large amount of active silicon dioxide and active alumina, and can be mixed with other raw materials of various components to prepare a hydraulic cementing material, so that the sulfate resistance and the chemical erosion resistance of the silica gel sculpture are improved, the particle separation is reduced, and the shrinkage and the cracking of the silica gel sculpture are reduced. Meanwhile, the glass fiber, the brucite fiber and the fly ash can have good matching effect, and reinforcing networks which are mutually interpenetrated are formed in the silica gel statues, so that the silica gel statues have good structural strength integrally.
More preferably, the silica gel sculpture is prepared by adding 3-7 parts by weight of functional auxiliary agent into the silica gel sculpture, wherein the functional auxiliary agent is a mixture of fumed silica and silazane, and the weight part ratio of the fumed silica to the silazane is (2-5): 1.
By adopting the technical scheme, the surface of the fumed silica contains active hydrogen-oxygen bonds, and the fumed silica can be subjected to condensation reaction with the silanol end groups of the silicon rubber molecular chains and can also form hydrogen bonds with oxygen atoms in the silicon rubber molecule boiling, so that the silica and the silicon rubber are structured, and the whole silica sculpture has good structural strength. Silazane is used as a good structure control agent, and can effectively control the hardening degree of the silica gel sculpture, so that the silica gel sculpture not only has good elasticity and processability, but also can maintain the internal structural strength. Therefore, the functional auxiliary agent formed by mixing the fumed silica and the silazane is added, so that the overall quality of the silica gel sculpture can be greatly improved.
Preferably, 2-8 parts by weight of enhancer is added into the components of the silica gel sculpture, the enhancer is a mixture of vinyl MQ silicon resin, lithium porcelain stone powder and borax, and the weight part ratio of the vinyl MQ silicon resin, the lithium porcelain stone powder and the borax is (2-5) to 1: 1.
By adopting the technical scheme, the vinyl MQ silicon resin has good temperature resistance, film forming property and adhesion property, the silicon rubber can be effectively enhanced, the lithium porcelain stone powder and the borax can absorb heat released by the curing reaction of the mixture to be vitrified, and further the integral structural strength of the silica gel sculpture can be improved, therefore, an enhancer formed by mixing the vinyl MQ silicon resin, the lithium porcelain stone powder and the borax is added, the elastic property of the silica gel sculpture is enhanced to a certain degree, the internal structural strength of the silica gel sculpture is also improved, and the integral quality of the silica gel sculpture is favorably realized.
More preferably, the surfactant is any one of sodium dodecyl benzene sulfonate, fatty glyceride and sodium lignosulfonate.
By adopting the technical scheme, the sodium dodecyl benzene sulfonate, the fatty glyceride and the sodium lignin sulfonate are good surfactants, so that the bonding strength among the components can be well improved, the aggregation and sedimentation of solid particles in the silica gel sculpture can be prevented, and the integral application effect and quality of the silica gel sculpture can be guaranteed.
More preferably, the flame retardant is any one of tricresyl phosphate, tributyl phosphate and dibromomethane.
By adopting the technical scheme, the flame retardant can ensure that the silica gel sculpture has good flame resistance, can effectively prevent, delay or stop the propagation of flame when being attacked by an external fire source, does not generate toxic gas in the processing of the silica gel sculpture, and improves the dispersibility, the physical and mechanical properties, the thermal stability and the flame retardant property of the silica gel sculpture.
More preferably, the reinforcing filler is one or more of calcium silicate, diatomite, bentonite, perlite powder and basalt powder.
By adopting the technical scheme, the calcium carbonate, the diatomite, the bentonite, the perlite powder and the basalt powder are good reinforcing fillers, and the silica gel sculpture has the advantages of high temperature resistance, flame retardance, high compressive strength and the like, has good filling property and dispersibility in the silica gel sculpture, has good associativity with other component raw materials, and further can enable the silica gel sculpture to have good and stable structural strength.
More preferably, the silane coupling agent is any one of vinyltriethoxysilane, vinyltrimethoxysilane and vinyltris (β -methoxyethoxy) silane.
By adopting the technical scheme, the silane coupling agent can be used for erecting a molecular bridge between the interfaces of inorganic substances and organic substances, connecting two materials with different properties together to improve the performance of the composite material and increase the bonding strength, and greatly improving the mechanical performance, the antistatic performance and the ageing resistance of the whole silica gel sculpture.
The second purpose of the invention is to provide a preparation process of the silica gel sculpture, and the silica gel sculpture prepared by the method has good elastic performance, high integral structural strength and good integral application effect.
In order to achieve the second purpose, the invention provides the following technical scheme, which comprises the following steps:
step one, adding polyurethane, silicon rubber and polyether glycol in corresponding parts by weight into a stirrer, and controlling the stirring speed to be 600-900rpm for 20-30 min;
secondly, adding glass fiber, brucite fiber and fly ash in corresponding parts by weight, and stirring at the speed of 1200-1500rpm for 10-20 min;
continuing to add the surfactant, the flame retardant, the reinforcing filler and the silane coupling agent in corresponding parts by weight, and controlling the stirring speed to be 800-1000rpm for 15-25 min;
and step four, finally, adding the corresponding parts by weight of toluene diisocyanate, uniformly mixing, injecting into a sculpture mold, solidifying, cooling at 10-15 ℃, and correspondingly finishing to obtain the silica gel sculpture.
By adopting the technical scheme, firstly, polyurethane, silicon rubber and polyether polyol are mixed and stirred to form a uniform and stable base material, then, glass fiber, brucite fiber and fly ash in corresponding parts by weight are added and fully act with each other, then, surfactant, flame retardant, reinforcing filler and silane coupling agent in corresponding parts by weight are continuously added to ensure the overall quality of the silica gel sculpture, finally, toluene diisocyanate is added, and after injection molding solidification and cooling, corresponding finishing is carried out, thus obtaining the silica gel sculpture. Meanwhile, the process is simple to operate, high in production efficiency, free of great pollution to the environment and good in applicability in the actual use process.
In summary, compared with the prior art, the invention has the following beneficial effects:
(1) glass fiber, brucite fiber and fly ash are added, and the glass fiber, the brucite fiber and the fly ash can have good matching effect with each other, so that a mutually-inserted reinforcing network can be formed in the silica gel statue, the silica gel statue has good structural strength, weather resistance and chemical resistance, good elastic performance can be kept, and the silica gel statue has good application effect;
(2) the functional assistant which is formed by mixing fumed silica and silazane is added, so that the fumed silica and the silicon rubber are structured, the whole silica gel sculpture has good structural strength, the hardening degree of the silica gel sculpture can be effectively controlled, the silica gel sculpture has good elasticity and processability, and the whole quality of the silica gel sculpture can be greatly improved;
(3) the enhancer formed by mixing the vinyl MQ silicon resin, the lithium porcelain stone powder and the borax is added, so that the elastic performance of the silica gel sculpture is enhanced to a certain degree, the internal structural strength of the silica gel sculpture is improved, and the integral quality of the silica gel sculpture is favorably improved.
Drawings
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example 1: a silica gel sculpture, each component and the corresponding weight portion thereof are shown in Table 1, and is prepared by the following steps:
step one, adding polyurethane, silicon rubber and polyether glycol in corresponding parts by weight into a stirrer, and controlling the stirring speed to be 750rpm and the stirring time to be 25 min;
secondly, adding glass fiber, brucite fiber and fly ash in corresponding parts by weight, and stirring at 1350rpm for 15 min;
continuing to add the corresponding parts by weight of sodium dodecyl benzene sulfonate, tricresyl phosphate, calcium silicate and vinyl triethoxysilane, and controlling the stirring speed to 900rpm for 20 min;
and step four, finally, adding the toluene diisocyanate in corresponding parts by weight, uniformly mixing, injecting into a sculpture mold, solidifying, cooling at 12.5 ℃, and correspondingly finishing to obtain the silica gel sculpture.
Note: the polyether polyol obtained in the above step is purchased from Nantong de Rick chemical Co., Ltd, and the brand is N204; the silicone rubber is purchased from Eucalyptus globulus silica gel science and technology Limited in Dongguan, and the trademark is LSR.
Example 2: a silica gel sculpture, which is different from example 1 in that it is prepared by the steps of:
step one, adding polyurethane, silicon rubber and polyether glycol in corresponding parts by weight into a stirrer, and controlling the stirring speed to be 600rpm and the stirring time to be 30 min;
secondly, adding glass fiber, brucite fiber and fly ash in corresponding parts by weight, and stirring at 1200rpm for 20 min;
continuing to add the corresponding parts by weight of sodium dodecyl benzene sulfonate, tricresyl phosphate, calcium silicate and vinyl triethoxysilane, and controlling the stirring speed to be 800rpm and the time to be 25 min;
and step four, finally, adding the toluene diisocyanate in corresponding parts by weight, uniformly mixing, injecting into a sculpture mold, cooling at 10 ℃ after solidification, and carrying out corresponding trimming to obtain the silica gel sculpture.
Example 3: a silica gel sculpture, which is different from example 1 in that it is prepared by the steps of:
step one, adding polyurethane, silicon rubber and polyether glycol in corresponding parts by weight into a stirrer, and controlling the stirring speed to be 900rpm and the stirring time to be 20 min;
secondly, adding glass fiber, brucite fiber and fly ash in corresponding parts by weight, and stirring at 1500rpm for 10 min;
continuing to add the sodium dodecyl benzene sulfonate, the tricresyl phosphate, the calcium silicate and the vinyl triethoxysilane in corresponding parts by weight, and controlling the stirring speed to be 1000rpm and the time to be 15 min;
and step four, finally, adding the toluene diisocyanate in corresponding parts by weight, uniformly mixing, injecting into a sculpture mold, cooling at 15 ℃ after solidification, and carrying out corresponding trimming to obtain the silica gel sculpture.
Examples 4 to 8: a silica gel sculpture, which is different from example 1 in that the components and their respective parts by weight are shown in table 1.
TABLE 1 Components and parts by weight of examples 1-8
Example 9: a silica gel sculpture, which is different from the sculpture of example 1 in that sodium dodecylbenzenesulfonate in the above-mentioned step three is replaced by fatty glyceride with equal mass.
Example 10: a silica gel sculpture, which is different from the sculpture of the embodiment 1 in that the sodium dodecyl benzene sulfonate in the third step is replaced by sodium lignosulfonate with equal mass.
Example 11: a silica gel sculpture, which is different from example 1 in that tricresyl phosphate in the above step three is replaced with tributyl phosphate of equal mass.
Example 12: a silica gel sculpture, which is different from that of example 1 in that tricresyl phosphate in the above step three is replaced with dibromomethane of equal mass.
Example 13: a silica gel sculpture, which is different from the sculpture of the embodiment 1 in that calcium silicate in the third step is replaced by perlite powder with equal quality.
Example 14: a silica gel sculpture, which is different from the sculpture obtained in example 1 in that 12 parts by weight of calcium silicate in the third step are replaced by 4 parts by weight of diatomite and 8 parts by weight of basalt powder.
Example 15: a silica gel sculpture differing from that of example 1 in that 12 parts by weight of calcium silicate were replaced with 3 parts by weight of calcium silicate, 5 parts by weight of bentonite and 4 parts by weight of perlite powder in the above-mentioned third step.
Example 16: a silica gel sculpture, which is different from the sculpture of example 1 in that vinyltriethoxysilane in the above-mentioned step three is replaced by vinyltrimethoxysilane of equal quality.
Example 17: a silica gel sculpture differing from example 1 in that vinyltriethoxysilane in the above-mentioned step three is replaced with vinyltris (. beta. -methoxyethoxy) silane of equal mass.
Example 18: a silica gel sculpture is different from the silica gel sculpture in the embodiment 1 in that the step three is specifically set to be added with corresponding parts by weight of sodium dodecyl benzene sulfonate, tricresyl phosphate, calcium silicate, vinyl triethoxysilane and 5 parts of functional auxiliary agent, wherein the functional auxiliary agent is obtained by mixing 3.5:1 parts by weight of fumed silica and silazane, the stirring speed is controlled to be 900rpm, and the time is controlled to be 20 min.
Example 19: a silica gel sculpture is different from the silica gel sculpture in the embodiment 1 in that the step three is specifically set to be added with corresponding parts by weight of sodium dodecyl benzene sulfonate, tricresyl phosphate, calcium silicate, vinyl triethoxysilane and 3 parts of functional auxiliary agent, wherein the functional auxiliary agent is obtained by mixing 2:1 parts by weight of fumed silica and silazane, the stirring speed is controlled to be 900rpm, and the time is controlled to be 20 min.
Example 20: a silica gel sculpture is different from the silica gel sculpture in the embodiment 1 in that the step three is specifically set to be added with corresponding parts by weight of sodium dodecyl benzene sulfonate, tricresyl phosphate, calcium silicate, vinyl triethoxysilane and 7 parts of functional auxiliary agent, wherein the functional auxiliary agent is obtained by mixing 5:1 parts by weight of fumed silica and silazane, the stirring speed is controlled to be 900rpm, and the time is controlled to be 20 min.
Example 21: a silica gel sculpture is different from the silica gel sculpture in the embodiment 1 in that the step three is specifically set to be added with corresponding parts by weight of sodium dodecyl benzene sulfonate, tricresyl phosphate, calcium silicate, vinyl triethoxysilane and 5 parts of enhancer, wherein the enhancer is prepared by mixing 3.5:1:1 parts by weight of vinyl MQ silicon resin, lithium china stone powder and borax, the stirring speed is controlled to be 900rpm, and the time is controlled to be 20 min.
Example 22: a silica gel sculpture is different from the silica gel sculpture in the embodiment 1 in that the step three is specifically set to be added with corresponding parts by weight of sodium dodecyl benzene sulfonate, tricresyl phosphate, calcium silicate, vinyl triethoxysilane and 2 parts of enhancer, wherein the enhancer is prepared by mixing 2:1:1 parts by weight of vinyl MQ silicon resin, lithium china stone powder and borax, the stirring speed is controlled to be 900rpm, and the time is controlled to be 20 min.
Example 23: a silica gel sculpture is different from the silica gel sculpture in the embodiment 1 in that the step three is specifically set to be added with corresponding parts by weight of sodium dodecyl benzene sulfonate, tricresyl phosphate, calcium silicate, vinyl triethoxysilane and 8 parts of enhancer, wherein the enhancer is prepared by mixing 5:1:1 parts by weight of vinyl MQ silicon resin, lithium china stone powder and borax, the stirring speed is controlled to be 900rpm, and the time is controlled to be 20 min.
Comparative example 1: a silica gel sculpture is different from the silica gel sculpture in the embodiment 1 in that the step two is specifically set to be added with brucite fiber and fly ash in corresponding parts by weight, the stirring speed is 1350rpm, and the time is 15 min.
Comparative example 2: the difference between the silica gel sculpture and the embodiment 1 is that the step two is specifically set as follows, then glass fiber and fly ash with corresponding parts by weight are added, the stirring speed is 1350rpm, and the time is 15 min.
Comparative example 3: a silica gel sculpture is different from the silica gel sculpture in the embodiment 1 in that the step two is specifically set to be added with glass fiber and brucite fiber in corresponding parts by weight, the stirring speed is 1350rpm, and the time is 15 min.
Comparative example 4: a silica gel sculpture, which is different from example 1 in that it is prepared by the steps of:
step one, adding polyurethane, silicon rubber and polyether glycol in corresponding parts by weight into a stirrer, and controlling the stirring speed to be 750rpm and the stirring time to be 25 min;
continuously adding the sodium dodecyl benzene sulfonate, the tricresyl phosphate, the calcium silicate and the vinyl triethoxysilane in corresponding parts by weight, and controlling the stirring speed to be 900rpm for 20 min;
and step three, finally, adding toluene diisocyanate in corresponding parts by weight, uniformly mixing, injecting into a sculpture mold, solidifying, cooling at 12.5 ℃, and correspondingly finishing to obtain the silica gel sculpture.
Performance testing
Test samples: the silica gel sculptures obtained in examples 1 to 23 were used as the test samples 1 to 23, and the silica gel sculptures obtained in comparative examples 1 to 4 were used as the control samples 1 to 4.
The test method comprises the following steps: the same size of test samples 1 to 23 and control samples 1 to 4 were cut out as standard samples, and the tear strength of each standard sample was measured by a CTM8000 series universal tensile machine, and the modulus of elasticity of each standard sample was measured by a Young's modulus measuring instrument of YSML-2015 type extensometer method.
And (3) test results: the test results of the test samples 1 to 23 and the control samples 1 to 4 are shown in Table 2. As can be seen from Table 2, the test results of the test samples 1-8 and the control samples 1-4 are compared to obtain the glass fiber, the brucite fiber and the fly ash, which are added to achieve good matching effect, so that the tear strength and the elastic modulus of the silica gel sculpture can be greatly improved. From the comparison of the test results of test samples 9-17 and test samples 1-8, the disclosed surfactants, flame retardants, reinforcing fillers and silane coupling agents are all suitable for the preparation of silica gel sculptures, and maintain good and stable tear strength and elastic modulus. The test results of the test samples 18-20, the test samples 21-23 and the test sample 1 are compared respectively to obtain the test result, and the tear strength and the elastic modulus of the silica gel sculpture can be improved by adding the functional auxiliary agent formed by mixing the fumed silica and the silazane and adding the reinforcing agent formed by mixing the vinyl MQ silicon resin, the lithium porcelain powder and the borax.
TABLE 2 test results of test samples 1-23 and control samples 1-4
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (7)
1. A silica gel sculpture is characterized by comprising the following components in parts by weight:
20-30 parts of polyurethane;
30-50 parts of silicon rubber;
35-55 parts of polyether polyol;
15-25 parts of toluene diisocyanate;
0.1-0.5 part of surfactant;
6-8 parts of a flame retardant;
12-18 parts of reinforcing filler;
0.3-0.5 part of silane coupling agent;
2-6 parts of glass fiber;
4-9 parts of brucite fiber;
5-10 parts of fly ash;
the reinforcing filler is one or more of calcium silicate, diatomite, bentonite, perlite powder and basalt powder.
2. The silica gel sculpture according to claim 1, wherein the silica gel sculpture is further added with 3-7 parts by weight of functional auxiliary agent, the functional auxiliary agent is a mixture of fumed silica and silazane, and the ratio of the fumed silica to the silazane is (2-5): 1.
3. The silica gel sculpture according to claim 1, wherein 2 to 8 parts by weight of an enhancer is further added to the components of the silica gel sculpture, the enhancer is a mixture of vinyl MQ silicone resin, lithium porcelain stone powder and borax, and the weight part ratio of the vinyl MQ silicone resin, the lithium porcelain stone powder and the borax is (2-5):1: 1.
4. The silica gel sculpture according to claim 1, wherein the surfactant is any one of sodium dodecylbenzenesulfonate, fatty glyceride and sodium lignosulfonate.
5. A silica gel sculpture as claimed in claim 1, wherein the fire retardant is any one of tricresyl phosphate, tributyl phosphate and dibromomethane.
6. The silica gel sculpture according to claim 1, wherein the silane coupling agent is any one of vinyltriethoxysilane, vinyltrimethoxysilane and vinyltris (β -methoxyethoxy) silane.
7. A process for preparing a silica gel sculpture as claimed in claim 1, which includes the steps of:
step one, adding polyurethane, silicon rubber and polyether glycol in corresponding parts by weight into a stirrer, and controlling the stirring speed to be 600-900rpm for 20-30 min;
secondly, adding glass fiber, brucite fiber and fly ash in corresponding parts by weight, and stirring at the speed of 1200-1500rpm for 10-20 min;
continuing to add the surfactant, the flame retardant, the reinforcing filler and the silane coupling agent in corresponding parts by weight, and controlling the stirring speed to be 800-1000rpm for 15-25 min;
and step four, finally, adding the corresponding parts by weight of toluene diisocyanate, uniformly mixing, injecting into a sculpture mold, solidifying, cooling at 10-15 ℃, and correspondingly finishing to obtain the silica gel sculpture.
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