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The MPC is aimed to shear and accelerate the flowing material before it reaches the gate. Ablestik defines thixotropic index as the ratio of the viscosity at 0.5 rpm and viscosity at 5.0 rpm at 25°C typically using a cone and plate viscometer. Using the pressure-dispensing model, the viscosity at 0.5 rpm represents the adhesive at rest, and less dripping is associated with a higher viscosity at 0.5 rpm. Thixotropic Index is a ratio of a material’s viscosity at two different speeds, generally different by a factor of ten. This value is indicative of a material’s ability to hold its shape. Ablestik defines thixotropic index as the ratio of the viscosity at 0.5 rpm and viscosity at 5.0 rpm at 25°C typically using a cone and plate viscometer.
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Further, the hydration of stress, the shear thinning behavior is represented by the flow index n. av S Larsson · 2003 · Citerat av 68 — Thixotropic fluid. Turbulent mixing According to Lacey's mixing index a fully segregated mixture has a value of zero and a fully random mixture a value of one. Fiberfix gelcoat is pre-accelerated and thixotropic. If 4% wax solution is Polyester resin. Thixotropic polyester resin for reinforcement with glass fibre mat.
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Se hela listan på azom.com The origin of semisolid thixotropic behavior is now well understood. Solid globules tend to agglomerate at rest and disagglomerate under deformation.
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The technique employs a flow restriction section, a so-called melt pre-conditioner (MPC), in the runner. The MPC is aimed to shear and accelerate the flowing material before it reaches the gate.
thixotropic synonyms, thixotropic pronunciation, thixotropic translation, English dictionary definition of thixotropic.
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Graphitic corrosion mikroporer. Miller indices. Millerindex. Miscibility gap Thixotropic tixotropisk (delvis smälta).
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* Viscosity (@100 RPM/23°C): 1,800 – 2,800 cPs. @ 250°C: 0.60%. Thixotropic Index: 5. 11 Mar 2015 Roussel defined a so-called ''thixotropy index'' as the ratio of the shear stress at rest to the characteristic time of flocculation .
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• High thixotropic index • Fast cure at low temperatures • Low transmittance • Good adhesion to liquid crystal polymer (LCP) substrates • Black in color to prevent light penetration • Designed for image sensor module assemblies and temperature sensitive electronics components 75 54 160 32,800 3,000 2 sec. at 100 mW/cm² + 30 min.
It is reversible, so that if left undisturbed for some time thixotropic material regains its viscosity. Thixotropic Index is a ratio of a material’s viscosity at two different speeds, generally different by a factor of ten. A thixotropic material’s viscosity will reduce as agitation or pressure is increased. This index indicates the material’s ability to hold its shape. Mayonnaise is a great example of this. It … The thixotropic character was evaluated through different descriptors: thixotropic area, thixotropic index, thixotropic constant and destructuration thixotropic coefficient.