Resins for Aerospace
New Products
ACS Symposium Series No. 132 Clayton A. May, Editor Lockheed Missiles and Space Company, Incorporated Based on a symposium sponsored by the ACS Division of Organic Coatings and Plastics Chemistry. The latest research on the use of resins in aerospace hardware applications and their testing. The research reported in this thirty-five chapter volume is representative of the immense amount of work necessary to develop resins for aerospace. Topics range from the testing of launch tube seal prototypes to the search for easily removable coatings for electrical microcircuits. CONTENTS Various aspects of developing these highly specialized resins are explored in four sec tions. The first section's focus is resin chemis try; resin systems currently in use and those with potential applications are described. Adhesives. coatings, and sealants are discus sed in the second section. Topics include adhesive fracture testing methods and lowenergy-curable coatings. The third section de tails properties and testing methods of rein forced plastics. Viscoelastic properties of fiber-reinforced plastics and a polyester matrix for carbon fibers are among the subjects co vered. The final sections is devoted to instru mental characterization technology. Reports of NMR and precision abrasion mass spectros copic studies are included as well as those involving torsion pendulum analysis and diffe rential scanning calorimetry. 501 pages (1980) Clothbound S48.00 LC 80-15342 ISBN 0-8412-0567-1 Order from: SIS Dept. Box 24 American Chemical Society 1155 Sixteenth St., N.W. Washington, D.C. 20036 or CALL TOLL FREE 800-424-6747
Model 816 Programmable Controller includes eight inputs, 16 outputs, an instruction set, English programming, power down recovery sequence, battery backup, and a memory validity check on power up. The unit is self-contained with front panel programming, optical isolation on inputs and outputs, bench or panel mounting configurations. The 64-step capability can be broken into 10 variable length programs. CCI 403
Single Vial Colorimetric Triglyceride Kit
Microprocessor-Controlled Diluter/Dispenser
SinglVial Colorimetric Triglyceride Kit determines triglycerides in serum using reduced MTT as the color indicator. The reconstituted reagent is prepared by re constituting to the line with distilled water. The reaction is read at 560 nm and reaches its end point in 20 min at 2 0 - 2 5 °C or in 10 min at 37 ° C . Linear ity is to 700 mg/dL of triglycerides. Good agreement with the UV method of Wahlefeld. Boehringer Mannheim Diag nostics, Inc. 416
Microlab-M microprocessor-controlled Diluter/Dispenser is valve operated and features permanent storage of up to 99 programs and a programmable air gap. Accuracies of 0.5% are achieved when dispensing at least 1 0 % of the syringe capacity. The system accommodates syringe volumes from 50 μL· to 25 mL and can dispense volumes of 0.5 μ ι . Dilution to sample ratios can be pro grammed to be less than 1:1. The choice exists for fully automated, semiautomated, or manual aspiration and dispensing. The LED readout of the con troller displays μ Ι . volume, speed, pro gram identification number, direction of plunger motion and valve setting, the number of volume steps, and residual storage capacity. The system can be plugged into existing automated sys tems without reprogramming. Hamilton Co. 419
Potentiostat/Galvanostat Model 363 Potentiostat/Galvanostat features ± 1 A current capability at up to ± 3 0 V. A 4-digit switch controls the applied voltage or current. The range of potential control is ±9.999 V, while current ranges from 1 μ Α to 1 A are available. Current or potential are moni tored visually on the front panel meter, but can be recorded with an optional front panel output. The instrument can be made to accept externally supplied waveforms such as ramps, triangles, sinusoids, etc. A built-in electrometer prevents reference electrode loading and provides a low-impedance, unitygain monitoring point for the working electrode potential. EG&G Princeton Applied Research 418
460 A · ANALYTICAL CHEMISTRY, VOL. 53, NO. 3, MARCH 1981
pH Meter for Field Testing Accumet Model 156 pH Meter for envi ronmental and field testing is portable and operates off a 9-V replaceable bat tery. It is operational in the pH range from 0-14 up to humidities of 9 0 % , and at temperatures between 59 and 113 °F. Weighs 4 lb. Fisher Scientific Co. 408
