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Three-dimensional article and method of making three-dimensional article

A technology for dimensional products and products, which is applied in the field of preparing three-dimensional products, and can solve the problems of preparing fluorine-containing polymer products and difficult to use manufacturing methods

Inactive Publication Date: 2021-07-06
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Fluoropolymer articles are sometimes difficult to prepare using conventional manufacturing methods

Method used

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  • Three-dimensional article and method of making three-dimensional article
  • Three-dimensional article and method of making three-dimensional article
  • Three-dimensional article and method of making three-dimensional article

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0327] Example 1 (EX-1)

[0328] For EX-1, by adding 40g "TF 5135GZ" fluoropolymer dispersion, 10g deionized water, 7g ethoxylated (20)trimethylolpropane, 0.576g " IRGACURE 819DW", 0.0576gBHT to prepare actinic radiation polymerizable composition. The jar was sealed and spun on a lab bench top roller MX-T6-S at about 10 RPM for about 2 hours.

[0329] The composition was exposed to actinic radiation for multiples of 10 s using the procedure described above. Will Figure 1AThe array referred to as 102 was exposed to actinic radiation for 10 s, the array referred to as 104 was exposed for 20 s, and the frame referred to as 106 was exposed for 30 s. The shaped article is removed from the container and the unpolymerized composition is rinsed and the article is allowed to air dry. The resulting product is in figure 2 shown in the photo.

Embodiment 2

[0330] Example 2 (EX-2)

[0331] For EX-2, by adding 40g TF 5135GZ fluoropolymer dispersion, 10g deionized water, 7g ethoxylated (20)trimethylolpropane, 0.576g IRGACURE 819DW, 0.0576 g of BHT and 0.0576 g of OB-M1 were used to prepare an actinic radiation polymerizable composition.

[0332] The composition was exposed to actinic radiation for multiples of 12 s using the procedure described above. Will Figure 1A The array called 102 was exposed to actinic radiation for 12 s, the array called 104 was exposed for 24 s, and the frame called 106 was exposed for 36 s. The shaped article is removed from the container and the unpolymerized composition is rinsed and the article is allowed to air dry. The resulting product is in image 3 shown in the photo.

Embodiment 3

[0333] Example 3 (EX-3)

[0334] For EX-3, follow the procedure described for EX-2, except that by exposing the composition to Figure 5 The article is formed in the area indicated by the CAD file generated in the drawing, the area of ​​contact for 12s corresponds to the area numbered 730, and the area corresponding to the feature numbered 734 is contacted for an additional 20s. Backing 730 has a thickness of 100 microns, and ridges 734 having a height of 200 microns and widths of 300, 250, 200, 150 and 100 microns are spaced 450 microns apart on backing 730 .

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Abstract

A method comprising obtaining a composition (1016) disposed on a surface of a substrate (1010), irradiating a first portion (1017a) of the composition to obtain a first radiation dose, and irradiating a second portion (1017b) of the composition ) to obtain the second radiation dose. The composition (1016) comprises fluoropolymer particles and a binder material that polymerizes upon exposure to radiation. The first portion (1017a) and the second portion (1017b) are adjacent to or overlap each other, and the first radiation dose and the second radiation dose are different. Irradiating the first portion and the second portion of the composition (1016) causes the binder material to polymerize and form a three-dimensional article (1017) having the first portion (1017a) and the second portion (1017b) on the surface of the substrate (1010). The first portion (1017a) and the second portion (1017b) of the three-dimensional article have different thicknesses along an axis perpendicular to the surface of the substrate (1010). Three-dimensional articles are also described. The article (1017) can be, for example, a structured film.

Description

[0001] Cross References to Related Applications [0002] This application claims priority to US Provisional Application 62 / 527,376, filed June 30, 2017, the disclosure of which is incorporated herein by reference in its entirety. Background technique [0003] Fluoropolymers are widely used as raw materials and may be used in articles requiring at least one of low friction characteristics, inertness to chemicals, or heat resistance. [0004] It is sometimes difficult to prepare fluoropolymer articles using conventional manufacturing methods. For example, PTFE and tetrafluoroethylene copolymers, which have relatively high melt viscosities, cannot be molded by conventional melt processing techniques such as extrusion, injection molding, or blow molding. [0005] Has been proposed for additive manufacturing of certain fluoropolymers. International Application Publication WO 2007 / 133912 (Audenaert et al.) describes a laser sintering process for certain fluoropolymers. CN1057111...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B29C64/124B29C64/165B29C64/245B29C64/264B32B3/00G03F7/00G03F7/027G03F7/033G03F7/038G03F7/075G03F7/24B33Y10/00B33Y70/00B33Y80/00
CPCB32B3/00B33Y80/00B33Y70/00B33Y10/00B29C64/124B29C64/165B29C64/245B29C64/264G03F7/0037G03F7/0046G03F7/027G03F7/033G03F7/038G03F7/0755G03F7/24B33Y30/00B33Y50/02B29C64/393B33Y70/10
Inventor 杰弗里·N·巴尔道卡斯腾·弗兰克亚历山大·J·赫夫曼
Owner 3M INNOVATIVE PROPERTIES CO
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