Tatung Company

Tatung University

National Taiwan University

Ping-Hsun Tsai

C Will Chen

Ching-Huang Wang

Jeng-Ywan Jeng

Ming-Hua Ho

Chun-Yeh Chu

Chiung-Cheng Huang

Tai-Wei Tseng

The present invention provides a bottom plate of a resin tank for three-dimensional printing, which is manufactured through the following steps: substrate surface roughening step: treating the upper surface of a transparent substrate by using a plasma, or disposing a composite film on the upper surface of the transparent substrate to form a non-smooth surface structure having pores; substrate surface modification step: sequentially performing an activation treatment and a fluorination treatment on the upper surface of the transparent substrate; and stabilizer filling step: applying a stabilizer to the upper surface of the transparent substrate to fill the stabilizer penetrates into the pores on the upper surface of the transparent substrate. The low surface energy film reduces the adhesion of the hardened photosensitive material, and the stabilizer maintains the structure of the low surface energy film, so that the resin tank bottom plate has both oleophobic and hydrophobic properties.

Bottom plate of resin tank for three-dimensional printing

A biodegradable plastic composition is used to manufacture a biodegradable plastic. The biodegradable plastic composition includes a biodegradable polyester, a polysaccharide, and a modifier. The modifier is used to compound the polysaccharide and the biodegradable polyester to obtain a biodegradable plastic. The biodegradable plastic has a tensile strength greater than 3 MPa and an elongation greater than 81%.

Biodegradable plastic composition and manufacturing method thereof

A biodegradable polyester is consisting of a poly(terephthalate-di-(&#x3b5;-caprolactone) segment, a poly(terephthalate-butylene-terephthalate) segment, a poly(terephthalate-butylene-&#x3b5;-caprolactone) segment, a poly(&#x3b5;-caprolactone-butylene-&#x3b5;-caprolactone) segment, and a poly(tri(&#x3b5;-caprolactone) segment. The above five segments are obtained by polycondensation reaction of terephthalic acid, 1,4-butanediol and &#x3b5;-caprolactone under the presence of a catalyst, with a polycondensation temperature of 255&#xb0; C. to 270&#xb0; C. and a polycondensation time of 2 hours to 4 hours. Furthermore, based on 1 mole of terephthalic acid, a molar ratio of 1,4-butanediol to terephthalic acid is in the range of 1.1 to 1.4, and a molar ratio of &#x3b5;-caprolactone to terephthalic acid is in the range of 0.5 to 1.6. The biodegradable polyester can have a melting point (Tm) of 90&#xb0; C. to 170&#xb0; C.

Biodegradable polyester

Growing community of inventors

Taipei, Taiwan

Ping-Hsun Tsai