Tsinghua University

National Science Council

Chung Shan Institute of Science and Technology

Chung-Shan Institute of Science and Technology, Armaments Bureau, M.n.d

Industrial Technology Research Institute

China Technical Consultants, Inc.

Chen-Chi Martin Ma

Hon-Bin Chen

Chin-Yih Chen

Jeng-Cheng Yang

Shu-Hang Liao

Hew-Der Wu

Chuan-Yu Yen

Cheng-Chien Yang

Sheng Yen Wu

Kuo-Chi Yu

Yu-Feng Lin

Siu-Ming Yuen

Chia-Yi Chuang

Chih-Tsung Lee

Shih-Hsiung Lin

Fanghei Tsau

Wang Tsae Gu

Yi-Hsiuan Yu

Ming-Hsiung Wei

Lea-Hwung Leu

Bao-Yann Lin

Der-Shyang Chen

Ken Hung Chen

Min-Chien Hsiao

Shih Ming Chen

Ming Huang Tsai

Wang-Tsae Gu

Ming-Shiu Li

Yi Yie Yan

Hsu-Chiang Kuan

Hung-Chung Hsia

Han-Lang Wu

Hsun-Yu Su

Ying-Ying Cheng

Gou-Hong Yiin

Chih-Hung Hung

Wang-Nang Wang

Jeng-Chih Weng

Yuen Hsin Peng

Jeng-Chang Yang

Ming-Yu Yen

Hsu Chiang Kuan

A substrate for counter electrode of dye-sensitized solar cell is made of a composite material, which is prepared by: a) compounding vinyl ester and graphite powder to form bulk molding compound (BMC) material, the graphite powder content ranging from 60 wt % to 95 wt % based on the total weight of the graphite powder and vinyl ester, wherein 0.01-10 wt % of an electrically conductive filler, based on the weight of the vinyl ester resin, is optionally added during the compounding; b) molding the BMC material from step a) to form a substrate for the counter electrode having a desired shaped at 80-200&#xb0; C. and 500-4000 psi.

Composite substrate for counter electrode of dye-sensitized solar cell

A method for manufacturing a conductive adhesive containing a one-dimensional (1D) conductive nanomaterial is revealed. The method produces a conductive adhesive by mixing the 1D conductive nanomaterial with water-based or solvent-based resin solution. The conductive adhesive has good industrial applications, not influenced by industrial adaptability and environmental adaptability. The conductive adhesive obtained also has better conductivity. Moreover, the amount of the 1D conductive nanomaterial used in the present invention is less than the amount of conductive nanoparticles used and the cost is reduced effectively.

Method for manufacturing conductive adhesive containing one-dimensional conductive nanomaterial

A method of preparing carbon nanotube/polymer composite having electromagnetic interference (EMI) shielding effectiveness is disclosed, which includes: dispersing multi-walled carbon nanotubes (MWCNT) in an organic solvent such as N,N-Dimethylacetamide (DMAc); dissolving monomers such as methyl methacrylate (MMA) and an initiator such as 2,2-azobisisobutyronitrile (AIBN) in the MWCNT dispersion; and polymerizing the monomers in the resulting mixture at an elevated temperature such as 120&#xb0; C. to form a MWCNT/PMMA composite. The composite is coated onto a PET film, and the coated PET film alone or a stack of multiple coated PET films can be applied as an EMI shielding material.

Method of preparation of a MWCNT/polymer composite having electromagnetic interference shielding effectiveness

An epoxy resin containing side-chain-tethered caged POSS and a preparation method thereof as well as epoxy resin material containing POSS-epoxy and a preparation method thereof are disclosed. The epoxy resin containing side-chain-tethered caged POSS (POSS epoxy) is formed by tethering of POSS group to the side chain of the diglycidyl ether of bisphenol A (DGEBA) epoxy resin. The preparation method of the POSS epoxy includes a step of reacting epoxy resin with caged POSS to form epoxy resin containing side-chain-tethered caged POSS (POSS-epoxy). The preparation method of epoxy resin material containing POSS-epoxy includes a step of reacting DGEBA epoxy resin with POSS-epoxy to get epoxy resin material containing POSS-epoxy. The POSS-epoxy is distributed evenly in the epoxy resin material with POSS-epoxy.

Epoxy resin containing side-chain-tethered caged POSS and preparation method thereof as well as epoxy resin material containing POSS-epoxy and preparation method thereof

A composite bipolar plate for a polymer electrolyte membrane fuel cell (PEMFC) is prepared as follows: a) compounding vinyl ester and graphite powder to form bulk molding compound (BMC) material, the graphite powder content ranging from 60 wt % to 95 wt % based on the total weight of the graphite powder and vinyl ester, wherein carbon fiber 1-20 wt %, modified organo clay or noble metal plated modified organo clay 0.5-10 wt %, and one or more conductive fillers selected form: carbon nanotube (CNT) 0.1-5 wt %, nickel plated carbon fiber 0.5-10 wt %, nickel plated graphite 2.5-40 wt %, and carbon black 2-30 wt %, based on the weight of the vinyl ester resin, are added during the compounding; b) molding the BMC material from step a) to form a bipolar plate having a desired shaped at 80-200&#xb0; C. and 500-4000 psi.

Manufacturing process of conductive polymer composite bipolar plate for fuel cell having high gas permeability-resistance and heat-resistance

A composite bipolar plate for a polymer electrolyte membrane fuel cell (PEMFC) is prepared as follows: a) compounding vinyl ester and graphite powder to form bulk molding compound (BMC) material, the graphite powder content ranging from 60 wt % to 95 wt % based on the total weight of the graphite powder and vinyl ester, wherein carbon nanotubes together with a polyether amine dispersant or modified carbon nanotubes 0.05-10 wt %, based on the weight of the vinyl ester resin, are added during the compounding; b) molding the BMC material from step a) to form a bipolar plates having a desired shaped at 80-200&#xb0; C. and 500-4000 psi.

Fabrication of carbon nanotubes reinforced polymer composite bipolar plates for fuel cell

A manufacturing method of ladder-like phosphorus-containing polysilsesquioxanes nanocomposite material is disclosed. The method uses a reaction between ladder-like phosphorus-containing polysilsesquioxanes and modified epoxy. Besides improved char yield and limiting oxygen index, thermal degradation rate of the nanocomposite material is lowered dramatically so that the nanocomposite material possesses excellent flame retardance and thermal stability. Moreover, optical transparency of the nanocomposite material according to the present invention is still good, not being reduced by increased amount of polysilsesquioxanes. Thus the nanocomposite material is applied to decorative paints or protective paints.

Manufacturing method of ladder-like phosphorous-containing polysilsesquioxanes nanocomposite material

A phenolic resin that increases its toughness by polydimethylsiloxane and a process of preparing the same is provided. Polydimethylsiloxane is added as a coupling agent in a &#x3b3;-glycidoxypropyltrimethoxysilane-modified phenolic resin to improve the compatibility between polydimethylsiloxane and the phenolic resin. Then, tetraethoxysilane is added to conduct hydrolysis condensation and obtain tougher and thermally stable phenolic resin.

Toughness-increased phenolic resin and preparation thereof

The method of the present invention includes grafting a glycidyl alkylene trialkoxy silane to a novolac phenolic resin in an organic solvent to form a modified novolac phenolic resin; mixing a tetralkoxy silane, an acid and water with the resulting organic solution containing the modified novolac phenolic resin, wherein hydrolysis and condensation reactions are carried out to form a &#x2014;Si&#x2014;O&#x2014;Si&#x2014; bonding; adding a curing agent for novolac phenolic resin to the resulting reaction mixture; evaporating the organic solvent and acid from the resulting mixture and heating the resulting mixture to form a novolac phenolic resin/silica hybrid organic-inorganic nanocomposite.

Method for preparing a novolac phenolic resin/silica hybrid organic-inorganic nanocomposite

A composite bipolar plate of polymer electrolyte membrane fuel cells (PEMFC) is prepared as follows: a) preparing a bulk molding compound (BMC) material containing a vinyl ester resin and a graphite powder, the graphite powder content of BMC material ranging from 60 wt % to 80 wt %, based on the compounded mixture; b) molding the BMC material from step a) to form a bipolar plate having a desired shape at 80&#x2013;200&#xb0; C. and 500&#x2013;4000 psi, wherein the graphite powder is of 40 mesh&#x2013;80 mesh.

Preparation of fuel cell composite bipolar plate

A poly(urea-ureathane) based on polydimethyl siloxane is prepared by reacting an amino-terminated polydimethyl siloxane with polyisocyanate to form a prepolymer of poly(urea-urethane), and reacting the prepolymer and a chain extender in the presence of a catalyst. The resulting poly(urea-urethane) contains about 5-65 wt % of hard segments, and has a surface resistance of about 10-150 M&#x3a9; at high relative humidity, so that it can be used in anti-static electricity and electrostatic discharge shielding.

Process for preparing poly(urea-urethane)

A polysiloxane-urethane macromonomer having an unsaturated bond on one end thereof was co-polymerized with acrylic acid or acrylate monomers to form a copolymer having polysiloxane-urethane groups as a side chain thereof.

Polysiloxaneurethane-poly(acrylic acid)/polyacrylate copolymer and method for making the same

The invention provides a technique for improving the flexibility of a cured epoxy resin. An isocyanate terminated polydimethylsiloxane urethane as a modifier is grafted to an epoxy resin. The modified epoxy resin after being cured exhibits an improved flexibility.

Modifier and a method for improving the flexibility of a cured epoxy resin

Modified resole and novolac type phenolic resins which are toughened by poly(alkylene oxide) are disclosed. The modified resole type phenolic resin is prepared by the following steps: mixing a poly(alkylene oxide) having a weight average molecular weight of 100,000.about.8,000,000 and phenol in a weight ratio of poly(alkylene oxide): phenol=1.5:1.about.1:1 at an elevated temperature to form a glutinous mixture; mixing the glutinous mixture with an acid catalyst to obtain a viscous mixture having a relatively low viscosity compared to the glutinous mixture; and mixing the viscose mixture with a resole type phenolic resin. The modified novolac type phenolic resin is prepared by directly mixing the glutinous mixture with a liquid novolac type phenolic resin. The amount of the poly(alkylene oxide) mixed is 2.about.10 wt % based on the phenolic resin.

Modified phenolic resin toughened by poly (alkylene oxide) and

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Hsinchu, Taiwan

Chen-Chi Martin Ma