Table 1 Thermal and mechanical properties of the monolith sheets, the CNPs with E2 and E3, and the bulk thermosets of E1 and E2.

From: Co-continuous network polymers using epoxy monolith for the design of tough materials

Material

Sample code

Tga

(oC)

E’ at

25 oCa

(MPa)

Strength

at breakb

(MPa)

Strain

at breakb

(%)

Modulusb

(MPa)

Monolith sheetc

M120G

103

319

5.03 ± 0.63

10.7 ± 0.5

318 ± 37

M120A

102

521

6.26 ± 0.57

16.2 ± 2.1

394 ± 24

M130G

107(100)

450

5.55 ± 0.21

17.2 ± 1.2

290 ± 14

Co-continuous network polymerd

CNP-E2

‒ 0.3, 78.5

266

8.31 ± 0.67

(0.67 ± 0.14)e

11.4 ± 1.5

(17.4 ± 6.8)e

253 ± 35

(4.9 ± 0.7)e

CNP-E3

‒ 38.2, 20.4

34

1.84 ± 0.58

41.5 ± 14.3

11.9 ± 0.8

Bulk thermosetr

E1

175

1950

45.8 ± 6.1

4.6 ± 1.1

1640 ± 71

E2

‒

‒

0.70 ± 0.02

31.5 ± 0.9

3.5 ± 0.2

  1. aBased on tanδ peak temperature of DMA measured at the frequency of 1 Hz and the heating rate of 2 °C/min. Values in parentheses indicate Tg values determined by DSC from the second heating process at the heating rate of 10 °C/min.
  2. bBased on the tensile test at the rate of 1 mm/min and room temperature. Modulus was determined in the strain range of 0.05–0.25%
  3. cM120G and M120A were prepared on glass and Al plates, respectively, at 120 °C. M130G was prepared on a glass plate at 130 °C.
  4. dCNP-E2 and CNP-E3 were prepared using M120A as the monolith sheet.
  5. eValues in parentheses indicate those determined at 80 °C.
  6. fBulk thermoset prepared by thermal curing of an epoxy resin (E1 or E2) with BACM in the absence of PEG200 as the porogen.
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