Expert in Polymer Blend/Aging Sciences
Expert ID: 736291 Colorado, USA
|Year: 1989||Degree: PhD||Subject: Polymer Engineering/Science||Institution: Akron University|
|Years: 2011 to Present||Employer: Undisclosed||Title: Roofing Material Technical Leader||Department: R & D||Responsibilities: • developed a TPO blend to reduce resin and flame retardant cost by 18%
• reformulated a thermoforming PVC to pass upscale burn codes, saved $2 M/yr
• developed a EPDM formulation, it stays uncured during shelf life; will bond and cure to a rubber membrane on site.
• developed a EPDM membrane formulation in 2 years, reduced cost ~ $1.3M/yr
• solved EPDM production problems from mixing to calendaring, seaming, autoclave and mechanical performances
• designed 5 characterization methods to screen stabilizers, predict service longevity, detect processing degradation, optimize blend ratio in resin, process aids and stabilizers.
|Years: 1996 to 2010||Employer: Firestone Building Products Co.||Title: Technical Director- Thermoplastic membrane||Department: R & D||Responsibilities: • achieved CEO award from recycling multilayer TPO membrane and partially EPDM.
• achieved President awards from commercializing several new products:
Mechanical Blend TPO (filed a patent, used in geo-liner)
High reflectivity TPO membrane (Reflexeon)
Blend in engineering plastics to improve the oil/chemical resistance of TPO
TPO includes unique FR that can compete with PVC in flame resistance
• initiated; managed industrial rubber scraps to develop a hybrid plastics. The injection molded part is soft, heat weldable and can bond strongly by water based bonding adhesives. This material was proven to be used in many applications.
• developed methods to quantify UV weathering, membrane flexibility, lifetime prediction, specific stabilizer usage for various blends, etc. Coextrude multilayer products to optimize UV and burn resistance; broadened welding window; easy installation with upscale UL and FM codes. Solved processing issues like: surging, mixing instability, in-line compounding and product’s internal orientation.
• lead the technology in Hot Melt, Pressure Sensitive adhesives and printing/coating with the vendors to upgrade the value of the whole building system in terms of codes, easy installation and environmental friendly issues.
|Years: 1989 to 1992||Employer: Dow Chemical||Title: Project Leader||Department: Polyolefin||Responsibilities: • developed, patented a hot melt adhesive for extrusion coating with a metallocene catalyzed polyolefins.
• improved coating speed by increasing long chain branching amount in the blends
• developed sealants for coextruded film with different function in each layer.
• worked in a rheology team to find the type; the amount of long chain branching in m-PE required in the blend to improve its shrink tension, neck-in, coating speed with no melt fracture.