Manager Engineer

Ruihua Li (Jessica)

Irvine, CA *****, USA Mob: 678-***-**** Email: ********@*******.***

CORE SKILLS

Strong academic and industry background in polymer, coating, composites, electronics adhesives, medical device, surface chemistry and nanomaterials.

Good knowledge of fundamental properties of polymers (Mw, Tg, modulus, CTE) and how they relate to film, coating and packaging

Extensive experiences with various chemistries---inorganic materials, thermoplastic and thermoset materials including acrylates, epoxies, polyurethanes, and polyesters

Ability to establish relationship between the process/structural development/materials.

Expertise in scale-up from lab scale, and material characterization and analysis.

Formulated numerous polymer composite materials, thermally cured and light cured adhesives and developed processes for polymer processing

Ph.D in in Polymer, Textile and Fiber Engineering from Georgia Institute of Technology

EMPLOYMENT HISORY

SENIOR ENGINEER

Younger optics (Medical Device), Torrance, CA 05/2018-11/2018

In charge of formulation, development and characterization of photochromic lens using polyurethane chemistry.

Improve adhesion between coating/cap and lens

Develop different color lens by using different kinds of color change dyes.

Supervise three engineers/technicians (Bachelor/Master level) to do research

SENIOR SCIENTIST

Ormco/Kavo Kerr (a Danaher Company) (Medical device), Orange, CA 03/2016-05/2018

In charge of formulation, development and characterization of traditional orthodontic adhesives/cement/composites

oSuccessfully resolve important technical challenges related to bracket adhesive Grengloo syringe change (>$250K)

oSuccessfully improve self-etching primer AIO adhesion by 40-50% with 5s application time

oEvaluate self-adhering flowable composites Vertise flow, self-etching adhesives OptiBond XTR, OptiBond All-In-One, Maxcem Elite, Nexus RMGI for orthodontic application.

In charge of the development of breakthrough precoated bracket adhesives including formulation, package and dispenser

oSuccessfully solve the dry paste issue after accelerated aging tests and develop paste suitable for precoated bracket.

oSuccessfully developed lab scale paste dispenser and dispensing method

oSuccessfully developed accelerated aging testing method for precoated bracket adhesives.

oDeveloped precoated bracket adhesives prototype package

oSuccessfully identifying the key factors for the 1st level package and drafting the key requirements for the 1st level package. Support package development of package design firm.

oWork with the design firm and package suppliers to develop package for precoated bracket

oHandle all initial patent disclosure and IP of new or existing outside technologies. Conveying all known patent and IP research to internal organization.

Coach and supervise junior chemists and provide technical suggestions and instructions to cross-functional team

SENIOR DEVELOPMENT CHEMIST

Henkel Electronics Corporation, Irvine, CA 02/2011-03/2016

In charge of formulation, development and characterization of different thermally cured adhesives such as capillary underfill(CUF), non conductive paste underfill (NCP), wafer applied underfill(WAUF) and Encapsulant (Henkel Excellence award)

Formulate epoxy based capillary underfill and encapsulant adhesives, using epoxy-anhydride, epoxy-amine, epoxy-hybride, epoxy-phenolic, epoxy-acid based resin system. (one commercialized product, LOCTITE ECCOBOND UF 8840)

Develop high thermal conductive underfill adhesives (one commercialized product, LOCTITE ECCOBOND UF 3700T)

Develop long stage-life acrylate based non-conductive paste underfill (NCP) adhesives for CuOSP substrate (LOCTITE ECCOBOND NCP 5209, No.1 position in the NCP field)

EXTENDING WORKLIFE ON STAGE 600% LONGER.

Characterizing and testing materials using various methods such as IR, GC-MS, DMA, TMA, optical microscopy, DSC, SEM, IR,XPS, TGA, Density machine, thermal conductinvity and so on.

Handle multiple projects, deal with customer, critical projects and situation

Develop product profiles and development plans and timeline for projects

Prepare and deliver presentations on research projects for customers, management and technical audience’s and contribute to the development of strategic objectives for product development

Lead complex, long and short term product development projects, determine technology approach and conceive innovative routes in the formulation and testing of materials.

RESEARCH SCIENTIST II

CAPE lab, South Dakota School of Mines and Technology, Rapid City, SD 2010-2011

In charge of composites processing, nanocomposites and formulation.

Characterizing and testing composites and nanomaterials by SEM, DMA, Impact test, Instron machine, polarized microspcopy, FT-IR and so on

RESEARCH ASSISTANT

Georgia Institute of Technology, Atlanta, GA 2004-2008

Take charge of Polyethylene terephthalate (PET) single polymer composites, product development and processing

DEVELOPED A NOVEL SINGLE POLYMER COMPOSITES PROCESSING TECHNIQUE (one Patent, reduced 70% processing cost), STRONG IMPACT ON THE PET FIBER INDUSTRY.

Developed biodegradable Polylactic acid (PLA) single polymer composites.

Investigated the fusion bonding behavior and mechanism of crystallized amorphous polymer. Established characterization methods to evaluate the interface morphology and adhesion. Built and utilized etching method to observe surface morphology.

Developed novel techniques for Thermoplastic processing of Acrylic (PAN). Explored Nylon 6,6 composite manufacturing.

Characterizing and testing materials using SEM by etching method, polarized microscopy, optical microscopy, DSC, TGA, TMA, DMA, Instron machine.

Exceeded workplace expectations, acquiring CCACTI Foundation for research program. Managed projects and acquired external funding. Served as technology liaison between Universities and Industries

Coached undergraduate students, junior graduate students and visiting scholars to solve technical problems and research on a daily basis. Trained and maintained Compression molding machine, Freeze drier and Spin coating machine. Managed and trained group members on environmental health and safety, chemical waste management and chemical inventory.

R&D ENGINEER

Shanghai Sunrise Chemical Co., Ltd, Shanghai, China 2003-2004

Synthesized liquid and solid anatase Nano-Titanium Dioxide (Coating, Photocatalyst)

DEVELOPED A NOVEL LIQUID ANATASE NANO-TIO2 COLLOID SYNTHESIS METHOD RESULTING IN 2000% IMPROVEMENT IN PROCESS TIME AND YIELD, AND LEADING TO THE COMMERCIALIZATION OF TIO2 WITHIN A 1 YEAR TIME FRAME. COMMERCIALIZED Nano-Titanium Dioxide.

Formulated air purifier and nano-Titanium dioxide colloid. Solved the stability problem of liquid nano-TiO2 solution. Coated TiO2 onto mesoporous SiO2 and nonwoven supports

Established the characterization and testing methods. Scaled-up from laboratory to pilot plant scale.

Characterizing and testing materials using formaldehyde testing machine, SEM, XRD, TEM, Ultraviolet–visible spectroscopy (UV-Vis), Laser diffraction analysis(LDS)

Designed experiments and instructed technician to do experiments. Mentored one Co-Op student for his research. Maintained a lab notebook that includes data analysis and organization of results.

Collaborated with Sales&Marketing, Technical service, Customers and supplier to commercialize product. Evaluated emerging technologies and work with Marketing to develop commercial opportunities.

Supervised reliability and qualification to industry standards. Collaborated with tier I customers.

RESEARCH ASSISTANT

Surface, interface and adhesion of composites group (No.1 in China)

Harbin Institute of Technology, Harbin, China 2000-2002

Investigated carbon nanotube surface modification and interfacial characterization.

Took charge of Poly(p-phenylene-2,6-benzobisoxazole) (PBO) fiber surface grafting, modification and interfacial characterization. Investigated PBO fiber surface treatment and modification using Plasma.

Developed PBO fiber/Epoxy resin composites. Served as technical engineer for IR spectrometer.

Characterizing materials using FT-IR, AFM, SEM, TEM, XPS, contact angel wettability testing machine, interfacial tension/contact angle analysis and so on.

Mentored undergraduate students for their thesis.

CHARACTERIZATION SKILLS

-DMA -TMA -ARES Rheometer -Thermal conductivity by laser flash -Density testing

-Interfacial tension/contact angle analysis -Instron tensile machine -Capillary rheometer

-Differential Scanning Calorimetry (DSC) -X-ray diffraction (XRD) -Optical Microscopy

-Scanning Electron Microscope (SEM) -Polarized Microscopy -Infra-red spectrum (IR)

-Thermo-gravimetric analysis (TGA) -Atom force microscopy (AFM) -Ubbelohde viscometers

-X-ray Photoelectron Spectroscopy (XPS) -Transmission Electron Microscope (TEM) -Viscometer

COMMERCIALIZED PRODUCTS

1. Liquid and solid anatase Nano-Titanium Dioxide

(http://www.sunrisechem.com.cn/Product/index.asp?ClassID=130)

2. LOCTITE ECCOBOND UF 8840

(http://www.henkel.com/cps/rde/xchg/henkel_com/hs.xsl/fullproductlist-electronics.htm?countryCode=us&BU=industrial&parentredDotUID=productfinder&redDotUID=000001G4AP&categoryspecificredDotUID=00000002KJ)

3. LOCTITE ECCOBOND UF 3700T (experimental product name CUF20279-28, is commercializing currently)

4. LOCTITE ECCOBOND NCP 5209

(http://www.henkel-adhesives.com/electronics-news-2014-48478-ncp-material-enables-next-generation-flip-chip.htm)

PATENTS

D. Yao and R. Li, “PET single polymer composites made of commingled yarns of amorphous PET filaments and crystalline PET filaments”, US Provisional Patent Application No. 61/024,775, Filed on January 30, 2008.

EDUCATION

Georgia Institute of Technology (GIT), Atlanta, USA 2009

PhD in Polymer, Textile and Fiber Engineering,

Harbin Institute of Technology (HIT), Harbin, China

Master of Science in Materials,

Harbin Institute of Technology (HIT), Harbin, China

Bachelor in Applied Chemistry,

PUBLICATIONS

(1)R. Li and D. Yao, “Preparation of single poly(lactic acid) composites”, J. Applied Polymer Science, 2007, Volume 107, Issue 5, Pages 2909 – 2916 --- Cited by 23 in google scholar

(2)D. Yao, R. Li, and P. Nagarajan, "Single-Polymer Composites Based on Slowly Crystallizing Polymers", Polymer Engineering and Science, Vol. 46, No. 9, pp. 1223-1230 (2006). --- Cited by 22 in google scholar

(3)Qiaohong Huang, Tadashi Takano, Rose Guino, Ruihua Li, Advanced Underfill Materials, ICEPT-HDP 2012_Aug 13-16_Guilin, China

(4)R. Li, D. Yao, Y. Deng, Q. Sun, Fusion bonding of supercooled poly (ethylene terephthalate) between Tg and Tm, Journal of Applied Polymer Science, 2011, Volume 119, Issue 5, pages 3101–3112, 5 March 2011

(5)LI Rui-hua, HUANH Yu-dong, LONG Jun, LIU Li-xun. The Study of Air Cold Plasma Modification on PBO Fiber Surface. Acta Materiae Compsitae Sinica, 2003, 20(3): 102-107. --- Cited by 19 in google scholar

(6)LI Rui-hua, HUANG Yu-dong, LIU Li-xun, PENG Min.The Study of Plasma Grafting Modification on the PBO Fiber Surface. Journal of Materials Science & Technology, 2003,11(4): 396-398 ---Cited by 8 in google scholar

(7)R. Li, P. Nagarajan, and D. Yao, “Manufacturing and characterization of single-polymer PET composites”, Proceedings of the 64th Society of Plastics Engineers Annual Technical Conference, Charlotte, NC, May 2006, pp. 195-199.

(8)R. Li, D. Yao, and P. Nagarajan, "Characterization and adhesion study of PET single-polymer composites", ACS Meeting & Exposition, March 26-30, Atlanta, GA (2006)

(9)R. Li and D. Yao, “Manufacturing of single poly(lactic acid) composites”, Proceedings of 2006 ASME International Mechanical Engineering Congress and Exposition, Chicago, November 2006.

(10)D. Yao and R. Li, “Preparation of recyclable single-polymer composites”, American Association of Textile Chemists and Colorists 2006 IC & Proceedings, Atlanta, October 31- November 2, 2006.

(11)Ruihua Li, Plasma Treatment and Grafting Modification of PBO Fiber Surface, MS Thesis dissertation, (2002), Harbin Instiute of Technology.

(12)Huang Yudong, Wang Tianhui, Li Ruihua, et al. PBO Super Fiber and its Surface Treatment. Proceedings of The 11th Chinese Composites, Chinese Mechanical Society, Anhui, 2000, (10): 62-66

ORAL PRESENTATIONS

Qiaohong Huang, Tadashi Takano, Rose Guino, Ruihua Li, Advanced Underfill Materials, ICEPT-HDP 2012_Aug 13-16_Guilin, China

R. Li, P. Nagarajan, and D. Yao, “Manufacturing and characterization of single-polymer PET composites”, Proceedings of the 64th Society of Plastics Engineers Annual Technical Conference, Charlotte, NC, May 2006, pp. 195-199.

R. Li, D. Yao, and P. Nagarajan, "Characterization and adhesion study of PET single-polymer composites", ACS Meeting & Exposition, March 26-30, Atlanta, GA (2006)

R. Li and D. Yao, “Manufacturing of single poly(lactic acid) composites”, Proceedings of 2006 ASME International Mechanical Engineering Congress and Exposition, Chicago, November 2006.

D. Yao and R. Li, “Preparation of recyclable single-polymer composites”, American Association of Textile Chemists and Colorists 2006 IC & Proceedings, Atlanta, October 31- November 2, 2006.

D. Yao, “Single-polymer poly(ethylene terephthalate) composites”, Annual CCACTI Program Review Forum, Consortium on Competitiveness for the Apparel, Carpet, and Textile Industry (CCACTI), Atlanta, GA, January 2007.

Huang Yudong, Wang Tianhui, Li Ruihua, et al. PBO Super Fiber and its Surface Treatment. Proceedings of The 11th Chinese Composites, Chinese Mechanical Society, Anhui, 2000, (10): 62-66

REVIEWER

Journal of Manufacturing Science and Engineering

Polymer Engineering & Science

SOCIETY MEMBERSHIPS

Member of IEEE

Member of American Chemical Society

Member of Materials Research Society

Member of Society of Plastics Engineers

Member of Association for Dental Research

Member of American Association of Orthodontists

Henkel L.E.A.D Women Group

CITIZENSHIP STATUS

U.S. Permanent Resident

TRAINING & CERTIFICATION

HBX negotiation Mastery (Harvard Business School’s online class)

Situational leadership

Crucial conversation

Manager Success Workshop, Becoming a Manager II: Making a Quick Impact

Manager Success Workshop, Entering Middle Management: Expanding Your Influence

Manager Success Workshop, Managing Top Talent

Seven good habits for high efficient people

Fierce conversation

Accountability

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