CN-122011661-A - Color TPE particles for ultrasonic medical model and manufacturing method thereof

Abstract

The application belongs to the field of TPE particles, and particularly relates to a color TPE particle for an ultrasonic medical model and a preparation method thereof, wherein the color TPE particle comprises, by weight, 8-12 parts of a linear styrene thermoplastic elastomer, 85-90 parts of a third solvent, 0.2-0.3 part of an antioxidant, 0.1-1.5 parts of a modified pigment and 0.5-2 parts of C5 petroleum resin, the modified pigment comprises, by weight, 5-15 parts of a star-type styrene thermoplastic elastomer, 85-95 parts of a second solvent and 35-40 parts of a pigment pre-dispersion liquid, and the pigment pre-dispersion liquid comprises, by weight, 100-120 parts of a first solvent, 0.5-30 parts of a pigment, 0.3-0.45 parts of an oily dispersant and 0.1-0.15 part of a defoaming agent. The ultrasonic medical model made of the color TPE particles made of the raw materials has uniform color, good ultrasonic imaging effect and ultrasonic acoustic performance meeting the real human ultrasonic acoustic performance requirement.

Inventors

• LIU YANFEI
• XIE FEI
• JING RONG
• WU WENHUI

Assignees

• 天津天堰科技股份有限公司

Dates

Publication Date

20260512

Application Date

20260228

Claims (13)

1. 1. The color TPE particles for the ultrasonic medical model are characterized by comprising the following raw materials in parts by weight: 8-12 parts of linear styrene thermoplastic elastomer, 85-90 parts of third solvent, 0.2-0.3 part of antioxidant, 0.1-1.5 parts of modified pigment and 0.5-2 parts of C5 petroleum resin; wherein the raw materials and the components of the modified pigment are as follows in parts by weight: 5-15 parts of star-shaped styrene thermoplastic elastomer, 85-95 parts of second solvent and 35-40 parts of pigment pre-dispersion liquid; wherein the pigment pre-dispersion liquid comprises the following raw materials in parts by weight: 100-120 parts of a first solvent, 0.5-30 parts of a pigment, 0.3-0.45 part of an oily dispersant and 0.1-0.15 part of a defoaming agent.
2. 2. The colored TPE particles for ultrasonic medical models according to claim 1, wherein the first solvent is 26# paraffin oil, the oily dispersant is at least one of polyamines, polyurethanes and acrylic esters, and the defoamer is polyether silicone oil.
3. 3. The colored TPE particles for ultrasonic medical models according to claim 2 are characterized in that the polyamine amide dispersant is a 12-hydroxystearic acid-polyamidoamine block copolymer, the polyurethane dispersant is a polyester polyurethane block copolymer, the acrylic ester dispersant is an alkyl acrylate copolymer, and the polyether silicone oil defoamer is a polydimethylsiloxane-polyoxyalkylene block copolymer.
4. 4. The colored TPE particles for ultrasonic medical models as claimed in claim 1, wherein the pigment comprises at least one of modified titanium dioxide, phthalocyanine blue, permanent yellow, permanent red and pigment carbon black.
5. 5. The colored TPE particles for ultrasonic medical model according to claim 1 wherein the second solvent is 10# paraffin oil and the star-shaped styrene thermoplastic elastomer is at least one of star-shaped SEBS and star-shaped SEPS.
6. 6. The colored TPE particles for ultrasonic medical models according to claim 5, wherein when the star SEBS and the star SEPS are mixed for use, the mixing ratio is 1-2:0.3-0.8 in parts by weight.
7. 7. The colored TPE particles for ultrasonic medical models according to claim 5 or 6, wherein the styrene content of the star SEBS is 25% -33% and the styrene content of the star SEPS is 20% -30%.
8. 8. The colored TPE particles for ultrasonic medical model according to claim 1, wherein the third solvent is 26# paraffin oil and 10# paraffin oil, and the linear styrene thermoplastic elastomer is linear SEBS.
9. 9. The colored TPE particles for ultrasonic medical models according to claim 8, wherein the styrene content of the linear SEBS is 20% -30%.
10. 10. The colored TPE particles for an ultrasonic medical model according to claim 1, wherein the antioxidants are phenolic antioxidants and phosphorus antioxidants, the weight ratio of the phenolic antioxidants to the phosphorus antioxidants is set to be 0.1-0.25:0.05-0.1, the phenolic antioxidants are at least one of antioxidants 1010, 1078 and 3114, and the phosphorus antioxidants are at least one of antioxidants 168 and 626.
11. 11. A method for manufacturing a color TPE particle for an ultrasonic medical model for manufacturing a color TPE particle according to any one of claims 1 to 10, comprising the following steps: S1, mixing a first solvent, an oily dispersing agent and a defoaming agent according to parts by weight, adding the mixture into a ball milling tank with a multi-level ratio grinding ball, and adding pigment into the ball milling tank according to parts by weight for grinding and mixing to obtain pigment pre-dispersion liquid; s2, putting the second solvent into a reaction kettle according to parts by weight, after the temperature of the reaction kettle is raised to 150 ℃, putting the star-shaped styrene thermoplastic elastomer into the reaction kettle in batches, heating to 190 ℃, putting the pigment pre-dispersion liquid obtained in the step S1 into the reaction kettle according to parts by weight, stirring for 20-40 min, cooling to room temperature, and crushing to obtain the modified pigment; And S3, mixing the third solvent, the linear styrene thermoplastic elastomer, the antioxidant and the C5 petroleum resin obtained in the step S2 according to parts by weight, and then inputting the mixture into a double-screw extruder for extrusion, granulating and drying to obtain the colored TPE particles.
12. 12. The method for manufacturing the color TPE particles for the ultrasonic medical model according to claim 11, wherein grinding balls with the multi-level proportion in the step S1 are three grinding balls with the particle size of 1.5mm,3mm and 4mm and are put into a grinding ball tank according to the weight ratio of 2:5:3, wherein the filling volume of the grinding balls accounts for 60-66% of the total volume of the ball mill, the grinding and mixing time is set to 40-50 hours, the rotation direction of the ball tank is adjusted every 6-8 hours, and the mixing rotating speed is set to 50-100 r/min.
13. 13. The method for producing colored TPE particles for ultrasonic medical model according to claim 11, wherein the extrusion temperature of the twin screw extruder in step S3 is set to 170-220 ℃.

Description

Color TPE particles for ultrasonic medical model and manufacturing method thereof Technical Field The application belongs to the field of TPE particles, and particularly relates to a color TPE particle for an ultrasonic medical model and a manufacturing method thereof. Background At present, the hardness of an ultrasonic medical model for medical teaching is generally in the range of 5-15 Shore C. In order to ensure the simulation and good ultrasonic imaging effect during the production, pigment is added to color the ultrasonic imaging device, and the conventional coloring method is colored by toner, color paste or color master batch. However, the process for making the ultrasonic medical model is usually carried out by casting at high temperature and then curing at room temperature, and in the process, coloring with toner or color paste is easy to cause uneven coloring and poor stability of the ultrasonic medical model product, while coloring with color master improves dispersion uniformity to a certain extent, in the process of making the color master, additives such as nano calcium, stearate and the like are added for increasing the coloring power of pigment and the dispersibility in the base material, and the additives change the mechanical properties such as hardness of the TPE base material of the thermoplastic elastomer, so that the acoustic properties of the ultrasonic medical model made of TPE as raw material are affected, and the teaching quality of ultrasonic medicine is affected. Disclosure of Invention The application aims to solve the technical problems, and provides the color TPE particles for the ultrasonic medical model and the manufacturing method thereof, wherein the color TPE particles manufactured by the method are used for manufacturing the ultrasonic medical model, so that the purposes of uniform overall color, high product stability and true and accurate ultrasonic imaging of the ultrasonic medical model which is formed by high-temperature casting and room-temperature curing are achieved. The application is realized by the following technical scheme: the color TPE particles for the ultrasonic medical model comprise the following raw materials in parts by weight: 8-12 parts of linear styrene thermoplastic elastomer, 85-90 parts of third solvent, 0.2-0.3 part of antioxidant, 0.1-1.5 parts of modified pigment and 0.5-2 parts of C5 petroleum resin; wherein the raw materials and the components of the modified pigment are as follows in parts by weight: 5-15 parts of star-shaped styrene thermoplastic elastomer, 85-95 parts of second solvent and 35-40 parts of pigment pre-dispersion liquid; wherein the pigment pre-dispersion liquid comprises the following raw materials in parts by weight: 100-120 parts of a first solvent, 0.5-30 parts of a pigment, 0.3-0.45 part of an oily dispersant and 0.1-0.15 part of a defoaming agent. Further, the first solvent is No. 26 paraffin oil, the oily dispersing agent is at least one of polyamine amides, polyurethane and acrylic esters, and the defoaming agent is polyether silicone oil. The polyurethane dispersant is a polyester polyurethane block copolymer, the acrylic ester dispersant is an acrylic alkyl ester copolymer, and the polyether silicone oil defoamer is a polydimethylsiloxane-polyoxyolefin block copolymer. Further, the pigment comprises at least one of modified titanium dioxide, phthalocyanine blue, permanent yellow, permanent red and pigment carbon black. The modified titanium dioxide is prepared by mixing 95 parts by weight of absolute ethyl alcohol, 5 parts by weight of deionized water and 0.3-0.5 part by weight of titanate coupling agent, adjusting the pH to be 4.5-5.5, adding 30-40 parts by weight of titanium dioxide, mixing and stirring for 10-20 min, standing, filtering and drying. Further, the second solvent is 10# paraffin oil, and the star-shaped styrene thermoplastic elastomer is at least one of star-shaped SEBS and star-shaped SEPS. Further, when the star SEBS and the star SEPS are mixed for use, the mixing ratio of the star SEBS and the star SEPS is 1-2:0.3-0.8 in parts by weight. Further, the styrene content of the star SEBS is 25% -33%, and the styrene content of the star SEPS is 20% -30%. Further, the third solvent is 26# paraffin oil and 10# paraffin oil, and the linear styrene thermoplastic elastomer is linear SEBS. Further, the styrene content of the linear SEBS is 20% -30%. Further, the antioxidants are phenolic antioxidants and phosphorus antioxidants, the weight ratio of the phenolic antioxidants to the phosphorus antioxidants is set to be 0.1-0.25:0.05-0.1, wherein the phenolic antioxidants are at least one of antioxidants 1010, 1078 and 3114, and the phosphorus antioxidants are at least one of antioxidants 168 and 626. The method for manufacturing the colored TPE particles for the ultrasonic medical model is used for manufacturing any one of the colored TPE particles, and specifically comprises the following manufacturing ste