Abstract:
Geocells for moderate to low load applications are disclosed here. The geocells have a cell wall thickness of from 0.25 mm to 0.95 mm. They have a wall strength of from 3500 N/m to 15000 N/m.
Abstract:
Disclosed are geotechnical structures formed from a geosynthetic article and an encapsulated granular material dispersed within or upon the geosynthetic article. In particular embodiments, a geocell is used as the geosynthetic article. Among other things, the geotechnical structures can be used for forming roads, parking lots, paved surfaces, as well as road beds and foundations for highways or railroads.
Abstract:
The present disclosure generally relates to a polymeric cellular confinement system which can be filled with soil, concrete, aggregate, earth materials, and the like. More specifically, the present disclosure concerns a cellular confinement system characterized by improved durability against damage generated by UV light, humidity, and aggressive soils, or combinations thereof.
Abstract:
A composite system comprises a base layer, a capping layer, and at least one core geocell layer. The base layer and capping layer are staked below and above the core geocell layer, which is infilled with a low quality material. In specific embodiments, the base layer and capping layer are each geocells infilled with a high quality material. This composite system meets engineering specifications economically.
Abstract:
A process is provided for producing a compatibilized polymeric blend. A first thermoplastic polymer and a reactive moiety are provided to a progressive melt kneading apparatus. The reactive moiety comprises a first reactive group capable of reacting with the first thermoplastic polymer but not a second polymer and a second reactive group capable of reacting with the second polymer but not the first polymer. The first thermoplastic polymer and the reactive moiety are then melt kneaded so that the first reactive group reacts with the first thermoplastic polymer and the second reactive group is grafted to the first thermoplastic polymer, forming a molten self-compatibilizer. A molten second polymer is then provided. The molten self-compatibilizer is melt kneaded with the molten second polymer so that the second reactive group reacts with the second polymer to form a compatibilized polymeric blend. Also provided are articles formed from the compatibilized polymer blend.
Abstract:
A geocell is disclosed that has high strength and stiffness, such that the geocell has a storage modulus of 500 MPa or greater at 23° C.; a storage modulus of 150 MPa or greater at 63° C. when measured in the machine direction using Dynamic Mechanical Analysis (DMA) at a frequency of 1 Hz; a tensile stress at 12% strain of 14.5 MPa or greater at 23° C.; a coefficient of thermal expansion of 120×10−6/° C. or less at 25° C.; and/or a long term design stress of 2.6 MPa or greater. The geocell is suitable for load support applications, especially for reinforcing base courses and/or subbases of roads, pavement, storage areas, and railways.
Abstract:
A multiphase polymeric material comprises a first rigid continuous phase and a second elastic phase dispersed in the first phase. The multiphase polymeric material may be formed into polymeric strips and used to make a cellular confinement system which is suitable for use in cold areas.
Abstract:
Geotechnical article, and process for making it, the article having coefficient of thermal expansion less than about 150 ppm/° C. at ambient; resistance to acidic media greater than polyamide 6 resin and/or resistance to basic media greater than PET resin; resistance to hydrocarbons greater than that of HDPE; creep modulus of at least 400 MPa at 25° C., at 20% of yield stress load for 60 minutes (ISO 899-1); and 1 percent secant flexural modulus at least 700 MPa at 25° C. (ASTM D790); the article including a composition including (a) from about 1 to about 95% by weight of the composition of at least one functional group containing polymer or oligomer; and (b) from about 5 to about 99% by weight of the composition of at least one engineering thermoplastic, and optionally containing a filler and optionally containing an unmodified polyolefin, ethylene copolymer or ethylene terpolymer.
Abstract:
The present application provides a latent ink-jet ink formulation suitable as solder mask. The composition generally comprises: (a) at least one compound capable of self cross-linking (USM); (b) at least one phenolic resin; (c) at least one solvent; (d) at least one mineral filler; (e) at least one polyol; and (f) at least one photoinitiator.
Abstract:
The present invention discloses a latent thermosetting ink formulation for ink jet applications comprising a phenolic resin, an amino resin and a polyol. The formulation is characterized as having a viscosity of lower than 50 Cps at a shear rate of 10 to 100,000 sec-1 at a temperature lower than 100 C and a surface tension lower than 40 dynes/cm.