Jade texture resin handicraft and preparation method thereof

Abstract

The application relates to the technical field of artificial jade imitating technology, and particularly discloses a kind of jade texture resin handicraft and a preparation method thereof.A kind of jade texture resin handicraft, according to weight parts, raw materials include 100-120 parts of unsaturated polyester resin, 4-6 parts of accelerator, 2-3 parts of curing agent, 1-2 parts of color concentrate and 20-30 parts of reinforcing filler;The reinforcing filler includes inorganic whisker filler and talcum powder with different aspect ratios.The jade texture resin handicraft of the application has the warm and moist luster texture of imitating jade, uniform color, stable forming, and is not prone to collapse, cracking and deformation after long-term use.

Description

Technical Field

[0001] This application relates to the field of artificial jade technology, and more specifically, to a resin craft with a jade-like texture and a method for its preparation. Background Technology

[0002] Resin crafts, due to their high plasticity, transparency, and relatively low cost, have been widely used in decoration, ornaments, and simulated jewelry. Especially for crafts aiming to imitate the appearance of high-end materials like jadeite and gemstones, resin can be formulated in various colors such as yellow, orange, and emerald green to meet design requirements. Furthermore, it can be manufactured using either modular assembly or one-piece molding methods to create ornaments with different structures, satisfying the market's diverse and personalized demands for imitation jadeite crafts and becoming an important product type in the decorative arts field.

[0003] Currently, the industry mainly uses transparent resin as a base for making jade-like resin crafts, combined with coloring agents such as color oil and colorant. However, under the existing preparation technology and process, the production of such resin crafts always faces a core technical bottleneck, namely, products of different sizes and thicknesses are prone to poor molding stability during the molding process. This manifests as defects such as cracking and collapse, which seriously affect the appearance integrity, structural strength and durability of the products, significantly reducing the finished product qualification rate and increasing the raw material and process costs for production enterprises.

[0004] Meanwhile, the existing color matching and molding processes for jade-textured resin crafts have coupling defects. The addition of color matching additives such as color oils and color essences will slightly change the curing behavior and mechanical properties of the resin matrix. In the existing technology, the compatibility between the color matching system and the resin molding system is poor. Some color matching ratios will exacerbate the problem of uneven resin shrinkage, further reducing the molding stability of the product. Moreover, the existing process lacks standardized design for the amount and method of adding additives, which can easily lead to uneven color and indirectly cause molding defects. Summary of the Invention

[0005] In order to enhance the molding stability and color uniformity of resin handicrafts and prevent defects such as cracking and collapse, this application provides a resin handicraft with jadeite texture and its preparation method.

[0006] In the first aspect, this application provides a resin craft product made of jadeite, employing the following technical solution:

[0007] A resin handicraft with jade-like texture, by weight, comprises 100-120 parts unsaturated polyester resin, 4-6 parts accelerator, 2-3 parts curing agent, 1-2 parts colorant, and 20-30 parts reinforcing filler; the reinforcing filler includes inorganic whisker fillers with different aspect ratios and talc powder.

[0008] By adopting the above technical solution, the inventors used inorganic whisker fillers and talc with different aspect ratios as reinforcing fillers. The whiskers serve as a one-dimensional needle-like reinforcing phase, and the talc serves as a two-dimensional layered reinforcing phase. The two are combined in the resin matrix to form a needle-layer interwoven inorganic skeleton, which is embedded in the resin organic matrix to construct a rigid support skeleton. This achieves an organic-inorganic composite reinforcement structure, which significantly disperses the shrinkage stress during resin curing, effectively prevents the resin from collapsing due to insufficient strength after curing, and reduces the risk of cracking.

[0009] Optionally, the inorganic whisker filler includes calcium sulfate whiskers and calcium carbonate whiskers.

[0010] Optionally, the length of the calcium sulfate whiskers is 200±20μm and the aspect ratio is 20±5; the length of the calcium carbonate whiskers is 30±5μm and the aspect ratio is 25±5.

[0011] By adopting the above technical solution, this application uses a mixture of calcium sulfate whiskers (200±20μm) and calcium carbonate whiskers (30±5μm) to construct a multi-level three-dimensional support structure filled with long whisker skeletons and short whiskers. This multi-level three-dimensional support structure forms a synergistic reinforcement network through three-dimensional spatial interweaving. It can form an interpenetrating reinforcement structure that is rigidly pinned to the flexible resin matrix in the microstructure, forming a balance between rigidity and toughness. Compared with single particulate stabilizers and stabilizers with a single aspect ratio, this three-dimensional network structure formed by the interweaving of double whiskers can be more uniformly dispersed in the resin matrix, effectively improving the mechanical properties of resin crafts, achieving optimal stress bearing and transmission efficiency, maximizing the inhibition of crack initiation and propagation, and at the same time inhibiting the migration of coloring agents such as color oils and colorants, ensuring the color uniformity of resin crafts.

[0012] Optionally, the accelerator is selected from at least one of cobalt naphthenate, dimethylaniline, and diethylaniline.

[0013] Optionally, the curing agent is selected from at least one of methyl ethyl ketone peroxide, cyclohexanone peroxide, and benzoyl peroxide.

[0014] Secondly, this application provides a method for preparing resin handicrafts with jadeite texture, employing the following technical solution:

[0015] A method for preparing a resin handicraft with jadeite texture includes the following steps:

[0016] Unsaturated polyester resin, accelerator, curing agent, colorant and reinforcing filler are mixed, heated to 110-120℃, stirred evenly to obtain a casting liquid, which is then poured into a mold coated with a release agent, cured naturally, and demolded after setting at 70-80℃ to obtain a preliminary blank. The preliminary blank is then repaired for defects, sprayed with transparent varnish, and dried to obtain the final product.

[0017] Optionally, the reinforcing filler undergoes the following pretreatment before being mixed with other raw materials:

[0018] Dissolve 0.5-1 parts of polyether dispersant in 2-4 parts of anhydrous propylene glycol methyl ether, then add 0.8-1.2 parts of polyethylene glycol and 1.5-3 parts of terminal hydroxyalkyl phosphonate, stir until uniform, and then add 6-8 parts of anhydrous propylene glycol methyl ether and stir to obtain the modified solution.

[0019] Inorganic whisker fillers with different aspect ratios and talc powder are added to a mixer and stirred evenly to obtain a mixture. The mixture is heated to 70-80℃, and the modified liquid is added in the form of a spray and evenly sprayed on the surface of the mixture. After spraying, stirring is continued. After drying, shaping, and sieving, the pretreated reinforced filler is obtained.

[0020] Optionally, the terminal hydroxyalkylphosphonic acid is selected from any one of 11-hydroxyundecylphosphonic acid, 12-hydroxydodecylphosphonic acid, 13-hydroxytetrazylphosphonic acid, 14-hydroxytetradecylphosphonic acid, 15-hydroxypentadecanylphosphonic acid, and 16-hydroxyhexadecylphosphonic acid.

[0021] By adopting the above technical solution, a modified liquid is prepared by using polyether dispersant, polyethylene glycol with flexible long chain structure and terminal hydroxyl alkyl phosphonate composite as modifier, and anhydrous propylene glycol methyl ether as solvent. The surface modification of the reinforcing filler is achieved by spray coating and drying to obtain pretreated reinforcing filler. Among them, the phosphonate groups contained in the hydroxyl-terminated alkyl phosphonates can chelate with the metal cations such as calcium ions and magnesium ions on the surface of reinforcing fillers, inorganic whisker fillers, and talc to form a stable chemical bond structure, realizing the dense, directional, and stable coating of the modifier on the surface of the reinforcing filler. At the same time, this structure gives the resin crafts better hydrolytic stability. The hydroxyl groups at the other end can form hydrogen bonds and co-crosslinks with the ester groups and double bonds in the unsaturated polyester resin during the preparation process, acting as molecular bridges to achieve stable chemical bonding between the reinforcing filler and the resin matrix, significantly enhancing the interfacial bonding force between the reinforcing filler and the resin matrix. The polyether dispersant and polyethylene glycol are adsorbed on the surface of the reinforcing filler to form a steric hindrance layer. The polyether segments of polyethylene glycol are similar to the ester group structure of unsaturated polyester and have good compatibility. Its flexible long chains can extend into the resin matrix, preventing the close aggregation of filler particles on the one hand, and forming a flexible transition layer in the interfacial region on the other hand, effectively buffering thermal stress and curing shrinkage stress.

[0022] By using a spray coating method at 70-80℃, the reaction rate and sufficiency are guaranteed without causing the modifier to decompose. The modifier liquid is uniformly attached to the surface of the reinforcing filler in the form of tiny droplets, achieving a single-layer uniform coating. High-temperature stirring allows for more complete contact between the reinforcing filler and the modifier liquid, ensuring that all filler particles are coated by the modifier liquid.

[0023] In summary, this application has the following beneficial effects:

[0024] 1. This application uses calcium carbonate and calcium sulfate whiskers with different aspect ratios and mixes them with layered talc powder as reinforcing fillers to construct a needle-layer composite reinforcing filler system. By using a modified liquid containing terminal hydroxyl alkyl phosphonates, molecular-level anchoring and bonding between the reinforcing filler and the unsaturated polyester resin system are achieved, which significantly enhances the interfacial compatibility and dispersion uniformity between the inorganic reinforcing filler and the organic matrix, constructs a dense organic-inorganic composite skeleton, effectively improves the problems of local stress concentration and easy collapse and cracking in resin crafts, realizes the molding stability of resin crafts, and is not prone to collapse, cracking or deformation even after long-term use.

[0025] 2. This application achieves precise color adjustment with low-addition of colorant. The use of polyether dispersant and polyethylene glycol as modified liquid components further improves the uniform dispersion between reinforcing filler and colorant, effectively reduces filler agglomeration, and inhibits the migration of coloring aids such as color oil and colorant. This not only enhances the warm and lustrous texture of the resin craft imitation jade, but also achieves uniformity of color inside the craft. The color can remain pure and stable even after long-term use. Detailed Implementation

[0026] The present application will be further described in detail below with reference to embodiments and comparative examples.

[0027] raw material

[0028] Unless otherwise specified, all raw materials used in the embodiments and comparative examples in this application are commercially available products, specifically:

[0029] The unsaturated polyester resin was selected from Zhejiang Tianhe Chemical Co., Ltd., including Tianhe 256# and Tianhe 907# in a mass ratio of 7:3.

[0030] The colorant, selected from Jinan Xintian Chemical, includes a yellow colorant and a blue colorant in a mass ratio of 6:5;

[0031] The polyether dispersant is selected from German company, Dispers 655.

[0032] 11-Hydroxyundecylphosphonic acid, selected from Aladdin Chemical Reagent, H463752;

[0033] Calcium sulfate whiskers, with a length of 200±20μm and an aspect ratio of 20±5;

[0034] Calcium carbonate whiskers, with a length of 30±5μm and an aspect ratio of 25±5;

[0035] The transparent varnish is an inorganic nano-ceramic coating, selected from Foshan Green Tree New Materials Co., Ltd., product number D-200, with a coating amount of 10g / m². 2 .

[0036] Example of preparation of pretreated reinforced filler

[0037] Preparation Example 1

[0038] The preparation method of the pretreated reinforcing filler includes the following steps:

[0039] S1: Dissolve 0.5 parts of polyether dispersant in 2 parts of anhydrous propylene glycol methyl ether by weight, then add 0.8 parts of polyethylene glycol 600 and 1.5 parts of terminal 11-hydroxyundecylphosphonic acid, stir evenly, and then add 6 parts of anhydrous propylene glycol methyl ether and stir to obtain the modified solution.

[0040] S2: Calcium sulfate whiskers and calcium carbonate whiskers with different aspect ratios, along with layered talc powder, are added to a high-speed mixer and stirred until uniform to obtain a mixture. The mixture is heated to 70°C, and the modified liquid is added in the form of a spray while stirring. The mixture is evenly sprayed onto the surface of the mixture. After spraying, stirring is continued for 30 minutes. After drying, shaping, and sieving, the pretreated reinforced filler is obtained.

[0041] Preparation Example 2

[0042] The preparation method of the pretreated reinforcing filler includes the following steps:

[0043] S1: Dissolve 0.8 parts of polyether dispersant in 3 parts of anhydrous propylene glycol methyl ether by weight, then add 1 part of polyethylene glycol 600 and 2.5 parts of terminal 11-hydroxyundecylphosphonic acid, stir evenly, and then add 7 parts of anhydrous propylene glycol methyl ether and stir to obtain the modified solution.

[0044] S2: Calcium sulfate whiskers and calcium carbonate whiskers with different aspect ratios, along with layered talc powder, are added to a high-speed mixer and stirred until uniform to obtain a mixture. The mixture is heated to 75°C, and the modified liquid is added in the form of a spray while stirring. The mixture is evenly sprayed onto the surface of the mixture. After spraying, stirring is continued for 30 minutes. After drying, shaping, and sieving, the pretreated reinforced filler is obtained.

[0045] Preparation Example 3

[0046] The preparation method of the pretreated reinforcing filler includes the following steps:

[0047] S1: According to the weight, dissolve 1 part of polyether dispersant in 4 parts of anhydrous propylene glycol methyl ether, then add 1.2 parts of polyethylene glycol 600 and 3 parts of terminal 11-hydroxyundecylphosphonic acid, stir evenly, and then add 8 parts of anhydrous propylene glycol methyl ether and stir to obtain the modified liquid.

[0048] S2: Calcium sulfate whiskers and calcium carbonate whiskers with different aspect ratios, along with layered talc powder, are added to a high-speed mixer and stirred until uniform to obtain a mixture. The mixture is heated to 80°C, and the modified liquid is added in the form of a spray while stirring. The mixture is evenly sprayed onto the surface of the mixture. After spraying, stirring is continued for 30 minutes. After drying, shaping, and sieving, the pretreated reinforcing filler is obtained.

[0049] Preparation Example 4

[0050] The pretreated reinforced filler differs from that in Preparation Example 1 in that polyethylene glycol 600 was not added to the modified solution in step S1. Step S1 specifically involves dissolving 0.5 parts of polyether dispersant in 2 parts of anhydrous propylene glycol methyl ether by weight, then adding 1.5 parts of terminal 11-hydroxyundecylphosphonic acid, stirring until homogeneous, and then adding 6 parts of anhydrous propylene glycol methyl ether and stirring to obtain the modified solution.

[0051] Preparation Example 5

[0052] The pretreated reinforced filler differs from the preparation example 1 in that no polyether dispersant is added to the modified solution in step S1. Step S1 specifically involves mixing 0.8 parts by weight of polyethylene glycol 600 and 1.5 parts by weight of terminal 11-hydroxyundecylphosphonic acid, adding them to 8 parts by weight of anhydrous propylene glycol methyl ether, and stirring until homogeneous to obtain the modified solution.

[0053] Preparation Example 6

[0054] The pretreated reinforced filler differs from the preparation example 1 in that no polyether dispersant is added to the modified solution in step S1. Step S1 specifically involves mixing 1.5 parts by weight of terminal 11-hydroxyundecylphosphonic acid and adding it to 8 parts of anhydrous propylene glycol methyl ether, stirring until homogeneous to obtain the modified solution.

[0055] Preparation Example 7

[0056] The pretreated reinforced filler differs from that in Preparation Example 1 in that 11-hydroxyundecylphosphonic acid was not added to the modified solution in step S1. Step S1 specifically involves dissolving 0.5 parts of polyether dispersant in 2 parts of anhydrous propylene glycol methyl ether by weight, then adding 0.8 parts of polyethylene glycol 600, stirring until homogeneous, and then adding 6 parts of anhydrous propylene glycol methyl ether and stirring to obtain the modified solution.

[0057] Preparation Example 8

[0058] The pretreated reinforced filler differs from the preparation example 1 in that calcium sulfate whiskers are not added. Step S2 specifically involves adding calcium carbonate whiskers and layered talc powder to a high-speed mixer, stirring until a mixture is obtained, heating to 70°C, adding the modified liquid in the form of a spray while stirring, spraying evenly on the surface of the mixture, continuing to stir for 30 minutes after spraying, and then drying, shaping, and sieving to obtain the pretreated reinforced filler.

[0059] Preparation Example 9

[0060] The pretreated reinforced filler differs from the preparation example 1 in that calcium carbonate whiskers are not added. Step S2 specifically involves adding calcium sulfate whiskers and layered talc powder to a high-speed mixer, stirring until a mixture is obtained, heating to 70°C, adding the modified liquid in the form of a spray while stirring, spraying evenly on the surface of the mixture, continuing to stir for 30 minutes after spraying, and then drying, shaping, and sieving to obtain the pretreated reinforced filler.

[0061] Preparation Example 10

[0062] The pretreated reinforced filler differs from the preparation example 1 in that talc powder is not added. Step S2 specifically involves: adding calcium sulfate whiskers and calcium carbonate whiskers with different aspect ratios into a high-speed mixer, stirring until uniform to obtain a mixture, heating to 70°C, adding the modified liquid in the form of a spray while stirring, spraying evenly on the surface of the mixture, continuing to stir for 30 minutes after spraying, and then drying, shaping, and sieving to obtain the pretreated reinforced filler.

[0063] Preparation Example 11

[0064] The pretreated reinforced filler differs from the preparation example 1 in that no inorganic whisker filler is added. Step S2 specifically involves: adding layered talc powder to a high-speed mixer and heating it to 70°C; adding the modified liquid in the form of a spray while stirring and spraying it evenly on the surface of the mixture; continuing to stir for 30 minutes after spraying; and then obtaining the pretreated reinforced filler after drying, shaping, and sieving.

[0065] Example

[0066] Example 1

[0067] A resin handicraft with jadeite texture, by weight, comprises 100 parts unsaturated polyester resin, 4 parts accelerator, 2 parts curing agent, 1 part colorant and 20 parts reinforcing filler, wherein the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 1, the curing agent is methyl ethyl ketone peroxide and the accelerator is cobalt naphthenate.

[0068] The preparation method of the above-mentioned jade-textured resin handicrafts includes the following steps:

[0069] S1: Mix unsaturated polyester resin, accelerator, curing agent, colorant and reinforcing filler, heat to 110℃, and stir evenly to obtain casting liquid;

[0070] S2: Pour the casting liquid into the mold coated with release agent, let it solidify naturally, and demold it after setting at 75°C to obtain the initial blank. Repair the defects of the initial blank, spray it with transparent paint, and dry it to obtain the final product.

[0071] Example 2

[0072] A resin handicraft with jade-like texture, by weight, comprises 110 parts unsaturated polyester resin, 5 parts accelerator, 2.5 parts curing agent, 1.5 parts colorant and 25 parts reinforcing filler, wherein the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 1, the curing agent is methyl ethyl ketone peroxide and the accelerator is cobalt naphthenate.

[0073] The preparation method of the above-mentioned jade-textured resin handicrafts includes the following steps:

[0074] S1: Mix unsaturated polyester resin, accelerator, curing agent, colorant and reinforcing filler, heat to 120℃, and stir evenly to obtain casting liquid;

[0075] S2: Pour the casting liquid into the mold coated with release agent, let it solidify naturally, and demold it after setting at 80°C to obtain the initial blank. Repair the defects of the initial blank, spray it with transparent paint, and dry it to obtain the final product.

[0076] Example 3

[0077] A resin handicraft with jade-like texture, by weight, comprises 120 parts unsaturated polyester resin, 6 parts accelerator, 3 parts curing agent, 2 parts colorant and 30 parts reinforcing filler, wherein the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 1, the curing agent is methyl ethyl ketone peroxide and the accelerator is cobalt naphthenate.

[0078] The preparation method of the above-mentioned jade-textured resin handicrafts includes the following steps:

[0079] S1: Mix unsaturated polyester resin, accelerator, curing agent, colorant and reinforcing filler, heat to 110℃, and stir evenly to obtain casting liquid;

[0080] S2: Pour the casting liquid into the mold coated with release agent, let it solidify naturally, and demold it after setting at 70°C to obtain the initial blank. Repair the defects of the initial blank, spray it with transparent paint, and dry it to obtain the final product.

[0081] Example 4

[0082] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 2.

[0083] Example 5

[0084] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 3.

[0085] Example 6

[0086] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 4.

[0087] Example 7

[0088] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 5.

[0089] Example 8

[0090] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 6.

[0091] Example 9

[0092] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 7.

[0093] Example 10

[0094] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler has not undergone pretreatment. Its preparation method is as follows: calcium sulfate whiskers and calcium carbonate whiskers with different aspect ratios, as well as layered talc powder, are added to a high-speed mixer and stirred evenly to obtain the product.

[0095] Comparative Example

[0096] Comparative Example 1

[0097] A resin craft with a jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 8.

[0098] Comparative Example 2

[0099] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 9.

[0100] Comparative Example 3

[0101] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 10.

[0102] Comparative Example 4

[0103] A resin craft with jade-like texture, differing from Example 1 only in that the reinforcing filler is the pretreated reinforcing filler obtained in Preparation Example 11.

[0104] Performance testing

[0105] The following performance tests were conducted on the jade-textured resin handicrafts obtained in Examples 1-10 and Comparative Examples 1-4. Each test was performed three times, and the average value of the three test results was taken as the final result and recorded.

[0106] 1. Glossiness: Glossiness is assessed according to the quality grading standards for Hetian jade. The assessment standards are as follows:

[0107] 3A: Oily sheen, very oily and smooth to the touch, with a very strong oiliness;

[0108] 2A: It has a greasy sheen, is very oily, feels very soft, and has a strong oily feel;

[0109] 1A: The gloss is oily, smooth, and has a soft, oily feel;

[0110] 3A-: The gloss is oily or slightly waxy, quite oily, and the oiliness is good;

[0111] 2A-: The gloss is greasy or waxy, lacking oiliness, but the oiliness is acceptable;

[0112] 1A-: The gloss is waxy, not oily, and has poor oiliness.

[0113] 2. Compressive strength: Tested according to ASTM D695-96, "Standard Test Method for Compressive Properties of Rigid Plastics";

[0114] 3. Bending strength: Tested in accordance with GB / T4741-1999 "Test Method for Bending Strength of Ceramic Materials";

[0115] 4. Color difference ΔE after UV irradiation: The resin crafts were aged in an accelerated UV aging chamber with a UVA-340 40W UV lamp for 480 hours. The color of the aged resin crafts was then tested, and the overall color difference ΔE was calculated. The calculation formula is: ΔE=[(ΔL)] 2 +(△a) 2 +(△b) 2 ] 1 / 2 Where △L=L-L0, △a=a-a0, △b=b-b0, L0, a0, and b0 are the color parameters of the sample before aging, and L, a, and b are the color parameters of the sample after aging.

[0116] Table 1

[0117] Group gloss Compressive strength / MPa Flexural strength / MPa Color difference △E Example 1 3A 115.4 59.5 1.21 Example 2 3A 110.3 57.3 1.54 Example 3 3A 108.5 55.8 1.43 Example 4 3A 117.1 58.4 1.18 Example 5 3A 114.8 59.7 1.30 Example 6 2A 98.2 50.3 2.02 Example 7 2A 92.5 48.6 2.28 Example 8 1A 87.7 43.9 2.61 Example 9 3A- 85.3 41.5 3.02 Example 10 2A- 79.7 35.7 3.25 Comparative Example 1 2A 90.3 42.3 1.50 Comparative Example 2 2A 91.9 41.5 1.58 Comparative Example 3 3A- 71.2 35.0 2.01 Comparative Example 4 3A- 68.9 32.7 2.23

[0118] According to the performance test results of Examples 1-5 in Table 1, this application uses calcium carbonate and calcium sulfate whiskers with different aspect ratios and mixes them with layered talc powder as reinforcing fillers to construct a needle-layer composite reinforcing filler system. By using a modified liquid containing terminal hydroxyl alkyl phosphonates, molecular-level anchoring and bonding between the reinforcing filler and the unsaturated polyester resin system are achieved. The compressive strength of the resin crafts reaches 108.5-115.4 MPa, and the flexural strength reaches 55.8-59.7 MPa. After UV aging resistance test, it can still maintain excellent gloss. That is to say, the resin crafts prepared by the method of this application have excellent molding stability and gloss stability, and can maintain the purity and stability of color even after long-term use.

[0119] Comparative Examples 1-2 used only inorganic whisker fillers with a single aspect ratio, Comparative Example 3 used only layered talc as a reinforcing filler, and Comparative Example 4 used only inorganic whisker fillers with different aspect ratios as reinforcing fillers. It can be seen that the supporting structure of the resin crafts is insufficient, resulting in a significant decrease in mechanical strength and gloss. This also demonstrates that this multi-level three-dimensional support structure forms a synergistic reinforcing network through three-dimensional spatial interweaving. This network can create an interpenetrating reinforcing structure rigidly anchored within the flexible resin matrix, achieving a balance between rigidity and toughness. Compared to single particulate stabilizers and stabilizers with a single aspect ratio, this three-dimensional network structure formed by double whisker interweaving can be more uniformly dispersed in the resin matrix, effectively improving the mechanical properties of the resin crafts, achieving optimal stress bearing and transfer efficiency, maximizing the inhibition of crack initiation and propagation, and simultaneously inhibiting the migration of colorants such as color oils and colorants, ensuring the color uniformity of the resin crafts.

[0120] Based on the performance test results of Examples 1 and 6-10, it can be seen that using polyether dispersant, polyethylene glycol with a flexible long-chain structure and terminal hydroxyl alkyl phosphonate composite as modifiers, and anhydrous propylene glycol methyl ether as solvent to prepare the modified liquid, the surface modification of the reinforcing filler is achieved by spray coating and drying to obtain pretreated reinforcing filler. This effectively improves the uniform dispersion between the reinforcing filler and colorant, effectively reduces filler agglomeration, and inhibits the migration of coloring agents such as color oil and colorant. It not only enhances the warm and lustrous texture of the resin craft imitation jade, but also achieves the uniformity of the color inside the craft. The color can still remain pure and stable after long-term use.

[0121] This specific embodiment is merely an explanation of this application and is not intended to limit it. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but such modifications are protected by patent law as long as they fall within the scope of the claims of this application.

Claims

1. A resin handicraft made of jadeite, characterized in that, By weight, the raw materials include 100-120 parts of unsaturated polyester resin, 4-6 parts of accelerator, 2-3 parts of curing agent, 1-2 parts of colorant and 20-30 parts of reinforcing filler; the reinforcing filler includes inorganic whisker fillers with different aspect ratios and talc.

2. The jade-textured resin handicraft according to claim 1, characterized in that, The inorganic whisker filler includes calcium sulfate whiskers and calcium carbonate whiskers.

3. The jade-textured resin handicraft according to claim 2, characterized in that, The calcium sulfate whiskers have a length of 200±20μm and an aspect ratio of 20±5; the calcium carbonate whiskers have a length of 30±5μm and an aspect ratio of 25±5.

4. The jade-textured resin handicraft according to claim 1, characterized in that, The accelerator is selected from at least one of cobalt naphthenate, dimethylaniline, and diethylaniline.

5. The jade-textured resin craftwork according to claim 1, characterized in that, The curing agent is selected from at least one of methyl ethyl ketone peroxide, cyclohexanone peroxide, and benzoyl peroxide.

6. The method for preparing the jade-textured resin handicraft according to any one of claims 1-5, characterized in that, Includes the following steps: Unsaturated polyester resin, accelerator, curing agent, colorant and reinforcing filler are mixed, heated to 110-120℃, stirred evenly to obtain a casting liquid, which is then poured into a mold coated with a release agent, cured naturally, and demolded after setting at 70-80℃ to obtain a preliminary blank. The preliminary blank is then repaired for defects, sprayed with transparent varnish, and dried to obtain the final product.

7. The method for preparing jade-textured resin handicrafts according to claim 6, characterized in that, The reinforcing filler undergoes the following pretreatment before being mixed with other raw materials: Dissolve 0.5-1 parts of polyether dispersant in 2-4 parts of anhydrous propylene glycol methyl ether, then add 0.8-1.2 parts of polyethylene glycol and 1.5-3 parts of terminal hydroxyalkyl phosphonate, stir until uniform, and then add 6-8 parts of anhydrous propylene glycol methyl ether and stir to obtain the modified solution. Inorganic whisker fillers with different aspect ratios and talc powder are added to a mixer and stirred evenly to obtain a mixture. The mixture is heated to 70-80℃, and the modified liquid is added in the form of a spray and evenly sprayed on the surface of the mixture. After spraying, stirring is continued. After drying, shaping, and sieving, the pretreated reinforced filler is obtained.

8. The method for preparing jade-textured resin handicrafts according to claim 7, characterized in that, The terminal hydroxyalkylphosphonic acid is selected from any one of 11-hydroxyundecylphosphonic acid, 12-hydroxydodecylphosphonic acid, 13-hydroxytetrazylphosphonic acid, 14-hydroxytetradecylphosphonic acid, 15-hydroxypentadecanylphosphonic acid, and 16-hydroxyhexadecylphosphonic acid.