WO2018023972A1 - Antistatic thermoplastic elastomer for 3d printing and preparation method - Google Patents

Antistatic thermoplastic elastomer for 3d printing and preparation method Download PDF

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Publication number
WO2018023972A1
WO2018023972A1 PCT/CN2017/075408 CN2017075408W WO2018023972A1 WO 2018023972 A1 WO2018023972 A1 WO 2018023972A1 CN 2017075408 W CN2017075408 W CN 2017075408W WO 2018023972 A1 WO2018023972 A1 WO 2018023972A1
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Prior art keywords
thermoplastic elastomer
antistatic
parts
printing according
styrene
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PCT/CN2017/075408
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French (fr)
Chinese (zh)
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王立春
丁军
陆云
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南通普力马弹性体技术有限公司
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Publication of WO2018023972A1 publication Critical patent/WO2018023972A1/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
    • C08L91/00—Compositions of oils, fats or waxes; Compositions of derivatives thereof
    • C08L91/06—Waxes
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
    • B29C48/05—Filamentary, e.g. strands
    • 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
    • B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
    • B29C48/25—Component parts, details or accessories; Auxiliary operations
    • B29C48/92—Measuring, controlling or regulating
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L53/00—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers
    • C08L53/02—Compositions of block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bonds; Compositions of derivatives of such polymers of vinyl-aromatic monomers and conjugated dienes
    • 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
    • B29C2948/00—Indexing scheme relating to extrusion moulding
    • B29C2948/92—Measuring, controlling or regulating
    • B29C2948/92504—Controlled parameter
    • B29C2948/92704—Temperature
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/04—Antistatic
    • 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
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2207/00—Properties characterising the ingredient of the composition
    • C08L2207/04—Thermoplastic elastomer

Definitions

  • the present invention relates to an antistatic thermoplastic elastomer and a process for the preparation thereof.
  • the same ⁇ meets: soft (Shore hardness 30 ⁇ 80A), toughness (strength 15 ⁇ 26MPa; elongation ⁇ 400 ⁇ 3 ⁇ 4), wear resistance (Acron wear ⁇ 0. 05cm3/1.61km)
  • Thermoplastic elastomer materials for 3D printing such as antistatic (volume resistivity 1.0*10 8 ⁇ 10 ⁇ ⁇ ), high fluidity (melt index ⁇ 30g/10min), and fast curing speed, have hardly been reported. Therefore, it is important to express a soft, strong edge, abrasion resistant, antistatic, high flow, and fast curing thermoplastic elastomer material for 3D printing.
  • An antistatic thermoplastic elastomer for 3D printing characterized by: It is prepared from the following parts by weight:
  • polyester-based thermoplastic elastomer 20 ⁇ 160 parts
  • the styrenic thermoplastic elastomer used is (styrene-butadiene-styrene) block copolymer, (styrene-isoprene-styrene) block copolymer or both A type of hydride having a molecular weight of 15 to 350,000.
  • the polyester-based thermoplastic elastomer used is one of TPU or TPEE elastomers, and has a hardness of 70 to 95 A.
  • melt index 20 ⁇ 80g/10min (190°C, 2.16kg), tensile strength ⁇ 20MPa.
  • the paraffin oil used is a white oil mainly composed of a linear structure, and has a flash point of ⁇ 200 °C.
  • the antioxidant used is one of hindered phenols, aromatic amines, phosphites or thiodipropionic acid diester antioxidants.
  • the lubricant used is a kind of stearic acid, stearate, oleic acid amide, erucamide or polyethylene wax
  • the antistatic agent used is one of a nonionic antistatic agent or a polymeric permanent antistatic agent.
  • the wear-resistant aid used is an ultra-fine silicon carbide, boron nitride or a silicone resin having a high degree of polymerization.
  • the rheological additive used is one of C5 to C9 rosin resin, petroleum resin or pure monomer resin.
  • the twin-screw extruder used has an aspect ratio of 45 : 1 to 65 : 1, and the aspect ratio of the single-screw extruder is 25
  • a method for preparing an antistatic thermoplastic elastomer for 3D printing characterized in that: each material is premixed in a high-speed mixer according to a ratio, and then melted at 180 to 220 ° C by a twin-screw extruder.
  • the composition was prepared by blending, and a wire having a wire diameter of 2.0 to 4.0 mm was extruded through a single screw extruder to obtain a product.
  • thermoplastic elastomer material used for 3D printing of the invention not only has softness (Shore hardness 30 ⁇ 80A), toughness (strength 15 ⁇ 26MPa; elongation ⁇ 400 ⁇ 3 ⁇ 4), wear resistance (Acron wear ⁇ 0.05cm3/1.61km), antistatic (volume resistivity 1.0*10 8 ⁇ 10 1 ⁇ ) Q-cm), high fluidity (melt index ⁇ 30g/10min) and fast curing speed, it can be recycled and reused after use. It is a new environment-friendly material with simple processing technology, high production efficiency and recyclability. Reuse.
  • a certain proportion of styrenic thermoplastic elastomer, paraffin oil, polyester thermoplastic elastomer, antioxidant, lubricant, antistatic agent, anti-abrasion agent and rheological additive are sequentially placed in high-speed mixing
  • the machine is stirred, premixed uniformly, and then melt-blended at 180 ⁇ 220 °C to prepare a composition by a twin-screw extruder, and a wire having a wire diameter of 2.0 to 4.0 mm is extruded through a single-screw extruder to obtain a kind of use.
  • Antistatic thermoplastic elastomer consumables for 3D printing.
  • the aspect ratio (IJD) of the twin-screw extruder used above is 45: 1 to 65 : 1
  • the aspect ratio (L/D) of the single-screw extruder is 25 : 1 to 30 : 1.
  • Table 1 The specific embodiment of Table 1 consists of:

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Disclosed are an antistatic thermoplastic elastomer for 3D printing and a preparation method. A blend of a styrene thermoplastic elastomer and a polyester thermoplastic elastomer is used as a base material; a paraffin oil, an antioxidant, a lubricant, an antistatic agent, an abrasion resistance aid, and a rheological aid are added; melt-blending is performed by a twin-screw extruder to prepare a composition; a wire having a wire diameter of 2.0-4.0 mm and used for 3D printing is prepared by a single-screw extruder. The material is flexible (the Shore hardness is 30-80 A), tough (the strength is 15-26 MPa, and the elongation is larger than or equal to 400%), resistant to abrasion (the Akron abrasion is smaller than or equal to 0.05 cm3/1.61 km), and antistatic (the volume resistivity is 1.0*108-1010 Ω•cm), has high fluidity (the melt index is larger than or equal to 30 g/10 min) and a high cure speed, can be recycled after being used, and is a novel environment-friendly material.

Description

一种用于 3D打印的抗静电热塑性弹性体及制备方法 技术领域  Antistatic thermoplastic elastomer for 3D printing and preparation method thereof
[0001] 本发明涉及一种抗静电热塑性弹性体及其制备方法。  [0001] The present invention relates to an antistatic thermoplastic elastomer and a process for the preparation thereof.
背景技术  Background technique
[0002] 近年来， 3D打印技术蓬勃发展， 同吋， 用于 3D打印的各种材料不断推出， 特 别是金属粉体和有机高分子材料品类繁多， 出现了百花齐放的良性发展趋势。 市场的有机高分子材料以光敏树脂和 ABS、 PLA等硬质塑料为代表， 而软质的高 分子材料相对较少， 尚处于市场幵发的初级阶段， 未形成完全统一的标准化产 品。 热塑性弹性体 （TPE) 材料手感舒适， 软硬可调， 属于新一代环保材料， 目 前其在 3D打印领域的应用很少。 通过査找文献资料， 同吋满足： 柔软 （邵氏硬 度 30〜80A) 、 强韧 （强度 15〜26MPa; 伸长率≥400<¾) 、 耐磨 （阿克隆磨耗≤0. 05cm3/1.61km) 、 抗静电 （体积电阻率 1.0*10 8〜10 ^Ω ιη) 、 高流动性 （熔融 指数≥30g/10min) 和固化速度快等要求的用于 3D打印的热塑性弹性体材料几乎 未见报道。 因此， 幵发用于 3D打印的柔软、 强 ΐ刃、 耐磨、 抗静电、 高流动性和 固化速度快的热塑性弹性体材料很重要。 [0002] In recent years, 3D printing technology has flourished, and various materials for 3D printing have been continuously introduced. In particular, there are many kinds of metal powders and organic polymer materials, and there has been a benign development trend of blooming. The organic polymer materials in the market are represented by photosensitive resins and hard plastics such as ABS and PLA, while the soft polymer materials are relatively few. They are still in the initial stage of market development and do not form a completely unified standardized product. Thermoplastic elastomer (TPE) materials are comfortable to touch, soft and hard, and are a new generation of environmentally friendly materials. Currently, they are rarely used in 3D printing. By searching the literature, the same 吋 meets: soft (Shore hardness 30~80A), toughness (strength 15~26MPa; elongation ≥400<3⁄4), wear resistance (Acron wear ≤0. 05cm3/1.61km) Thermoplastic elastomer materials for 3D printing, such as antistatic (volume resistivity 1.0*10 8 〜10 ^Ω ιη), high fluidity (melt index ≥30g/10min), and fast curing speed, have hardly been reported. Therefore, it is important to express a soft, strong edge, abrasion resistant, antistatic, high flow, and fast curing thermoplastic elastomer material for 3D printing.
技术问题  technical problem
[0003] 本发明的目的在于提供一种柔软、 强韧、 耐磨、 抗静电、 高流动性和固化速度 快的用于 3D打印的抗静电热塑性弹性体及制备方法。  [0003] It is an object of the present invention to provide an antistatic thermoplastic elastomer for 3D printing which is soft, strong, abrasion resistant, antistatic, high flowability and fast curing speed and a preparation method thereof.
问题的解决方案  Problem solution
技术解决方案  Technical solution
[0004] 本发明的技术解决方案是： The technical solution of the present invention is:
[0005] 一种用于 3D打印的抗静电热塑性弹性体， 其特征是： 由下列重量份数的组分制 备而成：  [0005] An antistatic thermoplastic elastomer for 3D printing, characterized by: It is prepared from the following parts by weight:
[0006] 苯乙烯类热塑性弹性体 100份；  [0006] styrene-based thermoplastic elastomer 100 parts;
[0007] 聚酯类热塑性弹性体 20〜160份； [0007] polyester-based thermoplastic elastomer 20~160 parts;
[0008] 石蜡油 0〜200份； [0009] 抗氧剂 0.5〜2.0份； [0008] 0 to 200 parts of paraffin oil; [0009] an antioxidant of 0.5 to 2.0 parts;
[0010] 润滑剂 0.5〜4.0份；  [0010] Lubricant 0.5 to 4.0 parts;
[0011] 抗静电剂 2〜30份；  [0011] 2 to 30 parts of antistatic agent;
[0012] 耐磨助剂 2〜10份；  [0012] 2 to 10 parts of wear-resistant additives;
[0013] 流变助剂 3〜8份。  [0013] rheological assistant 3 to 8 parts.
[0014] 所采用的苯乙烯类热塑性弹性体为 （苯乙烯 -丁二烯-苯乙烯） 嵌段共聚物、 （ 苯乙烯-异戊二烯-苯乙烯） 嵌段共聚物或以上二者的氢化物的一种， 其分子量为 15〜35万。  The styrenic thermoplastic elastomer used is (styrene-butadiene-styrene) block copolymer, (styrene-isoprene-styrene) block copolymer or both A type of hydride having a molecular weight of 15 to 350,000.
[0015] 所采用的聚酯类热塑性弹性体为 TPU或 TPEE弹性体的一种， 其硬度为 70〜95A [0015] The polyester-based thermoplastic elastomer used is one of TPU or TPEE elastomers, and has a hardness of 70 to 95 A.
， 熔融指数 20〜80g/10min (190°C， 2.16kg) ， 拉伸强度≥20MPa。 , melt index 20~80g/10min (190°C, 2.16kg), tensile strength ≥20MPa.
[0016] 所采用的石蜡油为以直链型结构为主的白油， 其闪点≥200°C。 [0016] The paraffin oil used is a white oil mainly composed of a linear structure, and has a flash point of ≥200 °C.
[0017] 所采用的抗氧剂是受阻酚类、 芳香胺类、 亚磷酸酯类或硫代二丙酸双酯类抗氧 剂的一种。 [0017] The antioxidant used is one of hindered phenols, aromatic amines, phosphites or thiodipropionic acid diester antioxidants.
[0018] 所采用的润滑剂是硬脂酸、 硬脂酸酯、 油酸酰胺、 芥酸酰胺或聚乙烯蜡的一种  [0018] The lubricant used is a kind of stearic acid, stearate, oleic acid amide, erucamide or polyethylene wax
[0019] 所采用的抗静电剂为非离子型抗静电剂或高分子永久型抗静电剂的一种。 [0019] The antistatic agent used is one of a nonionic antistatic agent or a polymeric permanent antistatic agent.
[0020] 所采用的耐磨助剂为超细化的碳化硅、 氮化硼或具有高聚合度的硅树脂的一种[0020] The wear-resistant aid used is an ultra-fine silicon carbide, boron nitride or a silicone resin having a high degree of polymerization.
； 所采用的流变助剂为 C5〜C9的松香树脂、 石油树脂或纯单体树脂的一种。 The rheological additive used is one of C5 to C9 rosin resin, petroleum resin or pure monomer resin.
[0021] 所采用的双螺杆挤出机的长径比是 45: 1〜65: 1， 单螺杆挤出机的长径比是 25 [0021] The twin-screw extruder used has an aspect ratio of 45 : 1 to 65 : 1, and the aspect ratio of the single-screw extruder is 25
1〜30： 1。  1~30: 1.
[0022] 一种用于 3D打印的抗静电热塑性弹性体的制备方法， 其特征是： 各物质按照比 例在高速混合机先进行预混， 再经双螺杆挤出机于 180〜220°C熔融共混制备其组 合物， 通过单螺杆挤出机挤出线径为 2.0〜4.0mm的线材， 得到产品。  [0022] A method for preparing an antistatic thermoplastic elastomer for 3D printing, characterized in that: each material is premixed in a high-speed mixer according to a ratio, and then melted at 180 to 220 ° C by a twin-screw extruder. The composition was prepared by blending, and a wire having a wire diameter of 2.0 to 4.0 mm was extruded through a single screw extruder to obtain a product.
发明的有益效果  Advantageous effects of the invention
有益效果  Beneficial effect
[0023] 本发明用于 3D打印的热塑性弹性体材料不仅具有柔软 （邵氏硬度 30〜80A) 、 强韧 （强度 15〜26MPa; 伸长率≥400<¾) 、 耐磨 （阿克隆磨耗≤0.05cm3/1.61km ) 、 抗静电 (体积电阻率 1.0*10 8〜10 1ΰ Q-cm) 、 高流动性 （熔融指数≥30g/10min) 和固化速度快等特点， 使用后可以 回收循环再利用， 是新型的环境友好型材料， 而且加工工艺简单、 生产效率高 和可以回收再利用。 [0023] The thermoplastic elastomer material used for 3D printing of the invention not only has softness (Shore hardness 30~80A), toughness (strength 15~26MPa; elongation ≥400<3⁄4), wear resistance (Acron wear ≤ 0.05cm3/1.61km), antistatic (volume resistivity 1.0*10 8 ～10 1ΰ) Q-cm), high fluidity (melt index ≥30g/10min) and fast curing speed, it can be recycled and reused after use. It is a new environment-friendly material with simple processing technology, high production efficiency and recyclability. Reuse.
实施该发明的最佳实施例  BEST MODE FOR CARRYING OUT THE INVENTION
本发明的最佳实施方式  BEST MODE FOR CARRYING OUT THE INVENTION
[0024] 将按照一定比例的苯乙烯类热塑性弹性体、 石蜡油、 聚酯类热塑性弹性体、 抗 氧剂、 润滑剂、 抗静电剂、 耐磨助剂和流变助剂依次放入高速混合机搅拌， 预 混均匀后再经双螺杆挤出机于 180〜220°C熔融共混制备其组合物， 通过单螺杆挤 出机挤出线径为 2.0〜4.0mm的线材， 得到一种用于 3D打印的抗静电热塑性弹性 体耗材。 以上所采用的双螺杆挤出机的长径比 （IJD) 是 45: 1〜65: 1， 单螺杆 挤出机的长径比 （L/D) 是 25: 1〜30: 1。 [0024] A certain proportion of styrenic thermoplastic elastomer, paraffin oil, polyester thermoplastic elastomer, antioxidant, lubricant, antistatic agent, anti-abrasion agent and rheological additive are sequentially placed in high-speed mixing The machine is stirred, premixed uniformly, and then melt-blended at 180~220 °C to prepare a composition by a twin-screw extruder, and a wire having a wire diameter of 2.0 to 4.0 mm is extruded through a single-screw extruder to obtain a kind of use. Antistatic thermoplastic elastomer consumables for 3D printing. The aspect ratio (IJD) of the twin-screw extruder used above is 45: 1 to 65 : 1, and the aspect ratio (L/D) of the single-screw extruder is 25 : 1 to 30 : 1.
[0025] 本发明将通过下面的具体实施例对本发明的技术方案进行更加详细的说明， 但 本发明并不局限于以下提出的具体实施例。 本发明以下各具体的实施例列于表 1 中， 材料的性能数据列于表 2中：  The present invention will be described in more detail by way of the following specific embodiments, but the invention is not limited to the specific embodiments set forth below. The following specific examples of the invention are listed in Table 1, and the performance data of the materials are listed in Table 2:
[0026] 表 1具体的实施例组成：  [0026] The specific embodiment of Table 1 consists of:
[] []
Figure imgf000006_0001
Figure imgf000006_0001
表 2实施例的性能数据: Performance data of the embodiment of Table 2:
[表 1] [Table 1]
Figure imgf000007_0001
Figure imgf000007_0001
由此可见本发明的优异效果。  Thus, the excellent effects of the present invention can be seen.

Claims

权利要求书 Claim
[权利要求 1] 一种用于 3D打印的抗静电热塑性弹性体， 其特征是： 由下列重量份 数的组分制备而成：  [Claim 1] An antistatic thermoplastic elastomer for 3D printing, characterized by: being prepared from the following parts by weight:
苯乙烯类热塑性弹性体 100份；  Styrene thermoplastic elastomer 100 parts;
聚酯类热塑性弹性体 20〜160份；  Polyester thermoplastic elastomer 20~160 parts;
石蜡油 0〜200份；  Paraffin oil 0~200 parts;
抗氧剂 0.5〜2.0份；  Antioxidant 0.5~2.0 parts;
润滑剂 0.5〜4.0份；  Lubricant 0.5~4.0 parts;
抗静电剂 2〜30份；  Antistatic agent 2~30 parts;
耐磨助剂 2〜10份；  Wear-resistant additives 2 to 10 parts;
流变助剂 3〜8份。  Rheological additives 3 to 8 parts.
[权利要求 2] 根据权利要求 1所述的一种用于 3D打印的抗静电热塑性弹性体， 其特 征是： 所采用的苯乙烯类热塑性弹性体为 （苯乙烯 -丁二烯-苯乙烯） 嵌段共聚物、 （苯乙烯-异戊二烯-苯乙烯） 嵌段共聚物或以上二者的 氢化物的一种， 其分子量为 15〜35万。  [Claim 2] An antistatic thermoplastic elastomer for 3D printing according to claim 1, wherein the styrene-based thermoplastic elastomer used is (styrene-butadiene-styrene) A block copolymer, a (styrene-isoprene-styrene) block copolymer or a hydride of the above, having a molecular weight of 15 to 350,000.
[权利要求 3] 根据权利要求 1所述的一种用于 3D打印的抗静电热塑性弹性体， 其特 征是： 所采用的聚酯类热塑性弹性体为 TPU或 TPEE弹性体的一种， 其硬度为 70〜95A， 熔融指数 20〜80g/10min， 拉伸强度≥20MPa。  [Claim 3] An antistatic thermoplastic elastomer for 3D printing according to claim 1, wherein: the polyester-based thermoplastic elastomer used is one of TPU or TPEE elastomer, and its hardness It is 70 to 95 A, the melt index is 20 to 80 g/10 min, and the tensile strength is ≥ 20 MPa.
[权利要求 4] 根据权利要求 1所述的一种用于 3D打印的抗静电热塑性弹性体， 其特 征是： 所采用的石蜡油为以直链型结构为主的白油， 其闪点≥200°C  [Claim 4] An antistatic thermoplastic elastomer for 3D printing according to claim 1, wherein: the paraffin oil used is a white oil mainly composed of a linear structure, and has a flash point ≥ 200 ° C
[权利要求 5] 根据权利要求 1所述的一种用于 3D打印的抗静电热塑性弹性体， 其特 征是： 所采用的抗氧剂是受阻酚类、 芳香胺类、 亚磷酸酯类或硫代二 丙酸双酯类抗氧剂的一种。 [Claim 5] An antistatic thermoplastic elastomer for 3D printing according to claim 1, wherein: the antioxidant used is a hindered phenol, an aromatic amine, a phosphite or sulfur A type of dipropionate diester antioxidant.
[权利要求 6] 根据权利要求 1所述的一种用于 3D打印的抗静电热塑性弹性体， 其特 征是： 所采用的润滑剂是硬脂酸、 硬脂酸酯、 油酸酰胺、 芥酸酰胺或 聚乙烯蜡的一种。 [Claim 6] An antistatic thermoplastic elastomer for 3D printing according to claim 1, wherein the lubricant used is stearic acid, stearic acid ester, oleic acid amide, erucic acid A type of amide or polyethylene wax.
[权利要求 7] 根据权利要求 1所述的一种用于 3D打印的抗静电热塑性弹性体， 其特 征是： 所采用的抗静电剂为非离子型抗静电剂或高分子永久型抗静电 剂的一种。 [Claim 7] An antistatic thermoplastic elastomer for 3D printing according to claim 1, The levy is: The antistatic agent used is a nonionic antistatic agent or a polymeric permanent antistatic agent.
[权利要求 8] 根据权利要求 1所述的一种用于 3D打印的抗静电热塑性弹性体， 其特 征是： 所采用的耐磨助剂为超细化的碳化硅、 氮化硼或具有高聚合度 的硅树脂的一种； 所采用的流变助剂为 C5〜C9的松香树脂、 石油树 脂或纯单体树脂的一种。  [Claim 8] An antistatic thermoplastic elastomer for 3D printing according to claim 1, wherein: the wear-resistant auxiliary agent used is ultra-fine silicon carbide, boron nitride or has high A type of silicone resin having a degree of polymerization; the rheology aid used is one of a C5 to C9 rosin resin, a petroleum resin or a pure monomer resin.
[权利要求 9] 根据权利要求 1所述的一种用于 3D打印的抗静电热塑性弹性体， 其特 征是： 所采用的双螺杆挤出机的长径比是 45: 1〜65: 1， 单螺杆挤出 机的长径比是 25: 1〜30: 1。 [Claim 9] An antistatic thermoplastic elastomer for 3D printing according to claim 1, wherein the twin-screw extruder has an aspect ratio of 45 : 1 to 65 : 1. The aspect ratio of the single screw extruder is 25 : 1 to 30 : 1.
[权利要求 10] —种权利要求 1所述的一种用于 3D打印的抗静电热塑性弹性体的制备 方法， 其特征是： 各物质按照比例在高速混合机先进行预混， 再经双 螺杆挤出机于 180〜220°C熔融共混制备其组合物， 通过单螺杆挤出机 挤出线径为 2.0〜4.0mm的线材， 得到产品。  [Claim 10] A method for preparing an antistatic thermoplastic elastomer for 3D printing according to claim 1, wherein: each substance is premixed in a high-speed mixer according to a ratio, and then subjected to twin screw The extruder was melt-blended at 180 to 220 ° C to prepare a composition, and a wire having a wire diameter of 2.0 to 4.0 mm was extruded through a single screw extruder to obtain a product.
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