Expert Details
Polymer Compounding, Recycling and Degradation Sciences
ID: 736291
Colorado, USA
Education
| Year | Degree | Subject | Institution |
|---|---|---|---|
| Year: 1989 | Degree: PhD | Subject: Polymer Engineering/Science | Institution: Akron University |
Work History
| Years | Employer | Title | Department |
|---|---|---|---|
| Years: 2011 to 2020 | Employer: Johns Manville | Title: Roofing Material Technical Leader | Department: R & D |
Responsibilities:• Developed of-the-shelf polyolefin blends that matches the in-reactor TPO performances yet with cost saving more than 20%!• 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 EPDM 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. |
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| Years | Employer | Title | Department |
| Years: 1996 to 2010 | Employer: Firestone Building Products Co. | Title: Technical Director- Thermoplastic membrane | Department: R & D |
Responsibilities:• Achieved CEO award from recycling TPO membrane including all the polyester fabrics and a partial of EPDM membrane.• 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. • Led 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. |
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| Years | Employer | Title | Department |
| Years: 1989 to 1992 | Employer: Dow Chemical | Title: Project Leader | Department: Polyolefin |
Responsibilities:• Developed, patented a hot melt adhesive for extrusion coating with 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. |
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