Contents Binder Composition

Sulfur-extended binder system—binder content, 6 wt % mix binder composition, 4.5 wt % asphalt, 1.5 wt % sulfur sulfur/ asphalt weight ratio 0.33. 

No. Binder composition Molar ratios Hydroxyl content, meq/100 g ED behaviour Bath stability (Td/1+0 °C) Mechanical coating properties Salt-spray rating (10 d)... 

Starting powders Binder composition Binder content [vol.-%] TiB2 + Fe TiBj + Fe-Cr-Ni TiB2 + Fe-Cr-Ni + 7 mass-% Ti ... 

Figure 16 shows a plot of viscosity versus shear rate data for carbonyl iron powder feedstocks with different binder composition. The binders are composed of EVA/beeswax in proportions of 40/60, 60/40 and 70/30. It can be observed that as the EVA content in the binder is increased, the viscosity is increased accordingly. 

Besides viscosity and yield stress, the binder composition affects very significantly the thermal sensitivity of the feedstock s shear viscosity and yield stress. Figures 18 and 19 show, respectively, the carbonyl iron powder feedstock s activation energy for shear viscosity and yield stress with respect to EVA content in the binder. 

Figure 18. Variation of activation energy for shear viscosity with EVA content of carbonyl iron powder feedstock with different binder composition.

Oxidizers. The characteristics of the oxidizer affect the baUistic and mechanical properties of a composite propellant as well as the processibihty. Oxidizers are selected to provide the best combination of available oxygen, high density, low heat of formation, and maximum gas volume in reaction with binders. Increases in oxidizer content increase the density, the adiabatic flame temperature, and the specific impulse of a propellant up to a maximum. The most commonly used inorganic oxidizer in both composite and nitroceUulose-based rocket propellant is ammonium perchlorate. The primary combustion products of an ammonium perchlorate propellant and a polymeric binder containing C, H, and O are CO2, H2, O2, and HCl. Ammonium nitrate has been used in slow burning propellants, and where a smokeless exhaust is requited. Nitramines such as RDX and HMX have also been used where maximum energy is essential. 

Seventy years ago, nearly all resources for the production of commodities and many technical products were materials derived from natural textiles. Textiles, ropes, canvas, and paper were made of local natural fibers, such as flax and hemp. Some of them are still used today. In 1908, the first composite materials were applied for the fabrication of big quantities of sheets, tubes, and pipes in electrotechnical usage (paper or cotton as reinforcement in sheets made of phenol- or melamine-formaldehyde resins). In 1896, for example, airplane seats and fuel tanks were made of natural fibers with a small content of polymeric binders [1]. 

The quantity of conductive component varied from 15wt% to 30wt%. Solution of thermoplastic polymer in organic solvent was prepared separately. Then, a mixture of dry components Ni(OH)2 + graphite was added to that solution and mixed one more time. Content of polymer binder in composition of a dry electrode was 5-10wt%. 

Painting on copper leaf by Boucher. Figure 7.9 shows the TIC profile relative to the TMS derivatives of FAs from the sample [9]. The values of the parameters reported in Table 7.3 indicate that the binder was linseed oil. The FA composition shows a high content of dicarboxylic acid together with oxidation products. In this case, due to the... 

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