INDUSTRIAL AND ENGINEERING CHEMISTRY
October 1953
2295
RESISTANCE OF MYLAR FILX TABLEIX. CHEMICAL (1-mil thiakness, room temperature) Time of Exposure, Days
Reagent Control Dioxane Ethyl acetate Acetone Trichloroethylene Xylene Glacial acetic acid 18% HC1 Concd. HCl 35% “01 20’7 H&Or 1 2 8 NHIOH Concd. NHrOH 10% NaOH 10% NaOH NaCl soln. (sat.) 0
*
..
33 33 33 33 33 33 18 5 7 7 9
Tensile Strength, Lb./Sq. Inch MD TD 24 000 28,000 19: 100 31,700 27,600 21,600 15 000 23.800 15:800 28 200 21,700 21,100 18,000 27,800 19,700 24,200 18,000 24,000 16,900 14,400 24 200 21,700 14 200 21,000
:
3
10 33 33
18,500 24,700
20,000
Elongation, MD 125 160 192 188 104 166 176 139 114 233 191 100 Film pulverized On 60 40 204
%
Tear, G. MD 30
TD 135 190 178 204 114 204 144 133 117 130 120
10 11
19 16 13 35 23 20 5 8 10
110
handli:a
19,200 19,600
TD 30 16 14 20 22 15 25 34 20 6 8 9
10
174
10
22
19 39
Falling Ball Impact, KO.-Cm. 60 65 79 57 63 5% 88 68
43 70 52 29 2! 52
Shattered easily. M D = iMachine direction T D = Transverse direction
TABLE X. EFFECT OF ELECTRICAL VARNISHES A N D IMPREGNANTS ON MYLAR (1-mil thickness) Treatment
. . . .. . . .
Control
Modulus Lb./Sq. Inbh 577,000
Tensile Strength Lb./Sq. In’ch 26,000
Elongation, 75
Tear, G. 23
%
Falling Ball Impact
r
