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Evaluation of Insulation against Contact Heat, Radiant Heat and Sensory Comfort of Basalt Fabric-Based Composites with Parylene C Coating

Magdalena Tokarska
Magdalena Tokarska
, 
Pamela Miśkiewicz
Pamela Miśkiewicz
, 
Adam K. Puszkarz
Adam K. Puszkarz
 oraz 
Andrzej Nosal
Andrzej Nosal
   | 01 gru 2023
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Article Category: Research Article
Data publikacji: 01 gru 2023
Zakres stron: 99 - 108
DOI: https://doi.org/10.2478/ftee-2023-0050
Słowa kluczowe
© 2023 Łukasiewicz Research Network-Łódź Institute of Technology, published by Sciendo.
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fig. 1.

Optical microscopy images of both sides of basalt fabrics
Optical microscopy images of both sides of basalt fabrics

Fig. 2.

Micro-CT images of damaged surface: a) yarns of basalt fabric B1 (surface area: 3 mm × 3 mm), b) an enlarged area of the fabric inside the rectangle illustrating protruding parts of basalt fibers (inside yellow circles)
Micro-CT images of damaged surface: a) yarns of basalt fabric B1 (surface area: 3 mm × 3 mm), b) an enlarged area of the fabric inside the rectangle illustrating protruding parts of basalt fibers (inside yellow circles)

Fig. 3.

Scheme of the measurement system according to ISO 12127-1:2016
Scheme of the measurement system according to ISO 12127-1:2016

Fig. 4.

Scheme of the measurement system according to EN ISO 6942:2022
Scheme of the measurement system according to EN ISO 6942:2022

Fig. 5.

3D micro-CT reconstruction of four basalt fabrics with a deposited coating of Parylene C, marked in yellow ( all textile surfaces were reduced to dimensions 3×3 mm)
3D micro-CT reconstruction of four basalt fabrics with a deposited coating of Parylene C, marked in yellow ( all textile surfaces were reduced to dimensions 3×3 mm)

Fig. 6.

Uncertainty intervals covering the threshold time for unmodified basalt fabrics and composites
Uncertainty intervals covering the threshold time for unmodified basalt fabrics and composites

Fig. 7.

Uncertainty intervals covering the radiant heat transfer index for unmodified basalt fabrics and composites
Uncertainty intervals covering the radiant heat transfer index for unmodified basalt fabrics and composites

Fig. 8.

Remission curves of fabrics: a) B1, b) BP1
Remission curves of fabrics: a) B1, b) BP1

Fig. 9.

Dependence of tt and RHTI24 on the porosity and thickness of unmodified and modified basalt fabrics (lines guide the eye)
Dependence of tt and RHTI24 on the porosity and thickness of unmodified and modified basalt fabrics (lines guide the eye)

Threshold time for basalt fabrics and composites

Sample tt, s * Efficiency level Sample tt, s * Efficiency level
1 B1 3.9 (0.3) - 5 BP1 4.5 (0.2) -
2 B2 4.3 (0.8) -/F1 6 BP2 4.7 (0.2) -
3 B3 4.4 (0.3) - 7 BP3 6.7 (1.1) F1
4 B4 4.5 (0.5) - 8 BP4 9.7 (0.6) F1

Radiant heat transfer index for basalt fabrics and composites

Sample RHTI24, s * Efficiency level Sample RHTI24, s * Efficiency level
1 B1 12.6 (0.3) C1 5 BP1 12.4 (0.4) C1
2 B2 12.6 (0.3) C1 6 BP2 12.9 (0.4) C1
3 B3 12.4 (0.3) C1 7 BP3 12.8 (0.4) C1
4 B4 12.9 (0.3) C1 8 BP4 12.8 (0.9) C1

Color measurements results

Sample L1* a1* b1* Sample L1* a1* b1* ΔE00
B1 51.02 3.76 8.96 BP1 52.06 3.20 9.19 1.67
B2 47.42 2.94 8.53 BP2 47.81 3.02 8.17 1.67
B3 51.27 3.12 9.37 BP3 50.89 3.17 8.75 1.67
B4 48.18 2.97 8.76 BP4 49.72 3.08 8.80 1.67

Basalt fabric parameters (mean value with a variation coefficient)

Sample Weave Linear mass of warp/weft, tex Warp density, threads·cm-1 Weft density, threads·cm-1 Thickness, mm Areal density, g·m-2 Bulk density, kg·m-3
B1 Plain 138 11 9 0.480 (4%) 284 (6%) 592
B2 Plain 293 9 8 0.552 (5%) 391 (7%) 711
B3 Plain 189 11 9 0.582 (3%) 430 (8%) 741
B4 Twill 296 9 6 0.802 (4%) 731 (5%) 914

Structural parameters of composites determined using micro-CT

Geometrical parameter Composite
BP1 BP2 BP3 BP4
Total porosity, % 41.86 46.62 60.29 47.89
Yarn porosity (weft), % 35.61 32.91 30.34 39.57
Yarn porosity (warp), % 22.61 31.14 31.25 35.41
Weft density, cm-1 9.3 8.4 8.9 6.6
Warp density, cm-1 11.4 9.2 11.3 9.6
Density of yarns, cm-2 106 77 101 63
Major axis of elliptic yarn cross-section (weft), awe, mm 0.767 0.771 0.644 1.089
Minor axis of elliptic yarn cross-section (weft), bwe, mm 0.177 0.156 0.235 0.295
Weft flattering coefficient, ewe = bwe·awe-1 0.231 0.202 0.365 0.271
Major axis of elliptic yarn cross-section (warp), awa, mm 0.838 0.855 0.820 1.168
Minor axis of elliptic yarn cross-section (warp), bwa, mm 0.134 0.311 0.174 0.306
Warp flattering coefficient, ewa = bwa·awa-1 0.160 0.364 0.212 0.262
eISSN:
2300-7354
Język:
Angielski
Częstotliwość wydawania:
6 razy w roku
Dziedziny czasopisma:
Business and Economics, Business Management, Business Informatics, Process Management, Industrial Chemistry, Cellulose, Paper and Textiles, Polymer Science and Technology, Materials Sciences, Biomaterials and Natural Materials
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