Support material for laminate molding, laminate molding object using same, and method for manufacturing

A technology of layered modeling and manufacturing methods, applied in 3D object support structures, manufacturing tools, additive manufacturing, etc., can solve the problems of poor impact resistance, not easy to melt forming and melt fiberization, etc.

CN114829449APending Publication Date: 2022-07-29MITSUBISHI CHEM CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2022-07-29

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Abstract

Provided are: a support material which is suitable for stacking molding and is used for stacking molding of a target three-dimensional structure; and a method for producing a laminated molded article and a three-dimensional structure using the same. The support material comprises a heterofunctional group-modified polyvinyl alcohol-based resin obtained by modifying a heterofunctional group of a polyvinyl alcohol-based resin, and preferably by modifying the heterofunctional group to a terminal hydroxyl group, and can be provided in a filamentous form. In addition, the support material may be removed by water washing after manufacturing the laminated molded article including the target three-dimensional structure. The generated waste water is low in environmental burden, so that the waste water is easy to dispose.
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Description

technical field

[0001] The present invention relates to a support material excellent in adhesion to a target shaped body built by lamination molding, which is environmentally friendly and easy to remove from the laminated shaped body. The present invention also relates to a laminated molded object including a support structure made of a support material, and a method for producing a three-dimensional structure as a target molded body. Background technique

[0002] Laminate modeling is a method of forming a three-dimensional structure having a desired shape, wherein a fluid material is extruded, cured to form a layer, and the fluid material is extruded over a previous layer and cured to build the article layer by layer. The manufacturing method of a three-dimensional structure includes a UV curing method, a thermal fusion lamination method, and the like. The hot melt lamination method can be implemented using simple equipment and is widely used.

[0003] In forming the laye...

Examples

Embodiment

[0135] Hereinafter, the present invention will be described in more detail with reference to Examples, but the present invention is not limited to the following Examples as long as the gist of the present invention is not exceeded. In the examples, "parts" means a weight basis.

[0136] [Methods of Measurement and Evaluation]

[0137] 1. Characteristics of Heterofunctional Modified PVA

[0138] 1-1 Degree of saponification (mol%)

[0139] The degree of saponification is measured in accordance with JIS K 6726, and the degree of saponification of the raw material PVA-based resin used for the heterofunctional group-modified PVA is applied to the heterofunctional group-modified PVA.

[0140] 1-2 Average degree of polymerization

[0141] The average degree of polymerization of the raw material PVA-based resin used for the modification of PVA with heterofunctional groups.

[0142] The average degree of polymerization of the raw material PVA-based resin is the number-average degr...