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A high weather resistance PBT/ASA wire for 3D printing and its preparation method

A 3D printing, high weather resistance technology, applied in the direction of additive processing, etc., can solve the problems that are not suitable for 3D printing process, not mentioned, etc., to achieve the effect of reducing damage, improving stability, and strongly scattering ultraviolet rays

Active Publication Date: 2017-11-28
FUJIAN NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Chinese patent CN104098878A discloses a high-rigidity weather-resistant PBT / ASA alloy. Although the application also proposes a method for obtaining the PBT / ASA alloy, it mainly involves heat-resistant and aging-resistant high-performance engineering composite materials used in conjunction with metal parts, and the application The alloy contains 30-45 parts polyester high-strength short glass fiber, which is not suitable for 3D printing process
Chen Ting et al. (Fujian Normal University full-time professional degree master's degree thesis, PBT / ASA blend system performance and outdoor product application research, 2013) studied the phase morphology, rheological properties, compatibility and Weather resistance, but the weather resistance in this paper is only about the influence of ASA content on weather resistance
Additives such as heat stabilizers, UV absorbers, and UV shielding agents are not added, and there is no mention of using PBT / ASA alloys for 3D printing

Method used

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  • A high weather resistance PBT/ASA wire for 3D printing and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] 1. A high weather resistance PBT / ASA wire for 3D printing, characterized in that:

[0056] (1) formula according to weight percentage:

[0057] PBT 70

[0058] ASA 20

[0059] ABS-g-MAH 7.5

[0060]Lanthanum stearate 0.5

[0061] UV-P 0.2

[0062] Nano-TiO 2 1.3

[0063] 1076 / 168 0.3

[0064] White oil 0.2

[0065] (2) Preparation method:

[0066] A. PBT and ASA are vacuum-dried respectively;

[0067] B. According to the weight percentage formula, weigh the dried PBT, ASA, ABS-g-MAH, lanthanum stearate, UV-P, nano-TiO 2 , 1076 / 168, white oil;

[0068] C. Place the weighed components in a high-speed kneader, keep the speed at 3000 rpm / min, and stir at high speed for 30 minutes;

[0069] D. Mix uniformly PBT, ASA, ABS-g-MAH, lanthanum stearate, UV-P, nano-TiO 2 , 1076 / 168, and white oil are added to the feeding port of the twin-screw extruder. The temperature in zone 245°C, the temperature in zone 6 is 235°C, the temperature in zone 7 is 235°C, the temperat...

Embodiment 2

[0075] 1. A high weather resistance PBT / ASA wire for 3D printing according to the present invention, characterized in that:

[0076] (1) formula according to weight percentage:

[0077] PBT80

[0078] ASA 12

[0079] ABS-g-GMA 4.4

[0080] Isooctyl tin dimethyl dimercaptoacetate 0.2

[0081] UV-327 0.1

[0082] Nano ZnO 3

[0083] 1010 / 168 0.2

[0084] White oil 0.1

[0085] (2) Preparation method:

[0086] A. PBT and ASA are vacuum-dried respectively;

[0087] B. According to the weight percentage formula, weigh the dried PBT, ASA, ABS-g-GMA, isooctyltin dimethyl dimercaptoacetate, UV-327, nano ZnO, 1010 / 168, white oil;

[0088] C. Place the weighed components in a high-speed kneader, keep the speed at 4000 rpm / min, and stir at high speed for 25 minutes;

[0089] D. Add uniformly mixed PBT, ASA, ABS-g-GMA, isooctyl tin dimethyldithioglycolate, UV-327, nano-ZnO, 1010 / 168, and white oil to the feed port of the twin-screw extruder, The parameters of the twin-screw ext...

Embodiment 3

[0095] 1. A high weather resistance PBT / ASA wire for 3D printing according to the present invention, characterized in that:

[0096] (1) formula according to weight percentage:

[0097] PBT60

[0098] ASA 32

[0099] SAG 7

[0100] Isooctyl tin dimethyl dimercaptoacetate 0.3

[0101] UV-770 0.2

[0102] Nano MgO 0.2

[0103] 1076 / 168 0.2

[0104] White oil 0.1

[0105] (2) Preparation method:

[0106] A. PBT and ASA are vacuum-dried respectively;

[0107] B. According to the weight percentage formula, take the dried PBT, ASA, SAG, isooctyl tin dimethyl dimercaptoacetate, UV-770, MgO, 1076 / 168, white oil;

[0108] C. Place the weighed components in a high-speed kneader, keep the speed at 2500 rpm / min, and stir at high speed for 40 minutes;

[0109] D. Add uniformly mixed PBT, ASA, SAG, isooctyl tin dimethyldithioglycolate, UV-770, MgO, 1076 / 168, and white oil to the feeding port of the twin-screw extruder, and the twin-screw extruder The parameters are: zone 1 temper...

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Abstract

The invention discloses a highly weather-proof PBT (polybutylene terephthalate) / ASA (acrylonitrile styrene acrylate) wire for 3D printing and a preparation method of the PBT / ASA wire, relates to a printing material and aims to provide a 3D printing polymer material with better toughness and higher weather resistance. The technical scheme is that the formula comprises components in percentage by weight as follows: 50%-93% of PBT, 4%-90% of ASA, 0.5%-10% of a compatilizer, 0.1%-2% of a heat stabilizer, 0.1%-1% of an ultraviolet absorber, 0.1%-5% of an ultraviolet screening agent, 0.01%-0.1% of an antioxidant and 0.1%-1% of while oil. The weather-proof ASA is adopted to serve as a toughener of PBT, other weather-proof assistants are added, and the printing wire applied to a 3D printing product and used in outdoor intensive ultraviolet, damp, rain and light environments is provided.

Description

technical field [0001] The invention belongs to a PBT / ASA wire used for 3D printing and a preparation method thereof. Background technique [0002] Polyethylene terephthalate (PBT) is a thermoplastic engineering plastic with excellent comprehensive properties. It has excellent mechanical properties, electrical properties, solvent resistance, melt fluidity and processing properties. It is widely used in electronic appliances, Automotive industry, mechanical parts and household appliances and other fields. However, PBT has the disadvantages of low notched impact strength and large molding shrinkage. [0003] Acrylonitrile-butadiene-styrene (ABS) is often used to improve the toughness of PBT and prepare PBT / ABS alloy because of its toughness, hardness, and balanced mechanical properties of rigid phase, and its large output and low price. However, there are unsaturated bonds in the polybutadiene molecular chain in ABS, which makes it easy to age when it is used outdoors, short...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L67/02C08L51/00C08L91/06C08L55/02C08L25/14C08K13/02C08K5/098C08K5/132C08K5/3475C08K5/3435C08K3/22B33Y70/00B29C47/92B29C48/92
Inventor 夏新曙陈庆华黄宝铨龚建杨松伟曹长林
Owner FUJIAN NORMAL UNIV
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