The Influence of the Kaolin Content on the Thermal Protection Property of Double-Layer Coating of Flexible Composites

Abstract

The comparison and analysis for the preparation of related performance indicators of the thermal protection such as the ablation resistance performance, thermal stability at high temperature and reflection ability of the heat ray of kaolin double-layer coated flexible composites were carried on. Because of the 2 d stratified structure of kaolin, and at the same time it processes the higher refractoriness, excellent resistance to the elevated temperature, the certain heat insulation and the reflection performance of the heat ray, the adequate padding of kaolin can improve the prepared thermal protection ability of double-layer coating of flexible composites.

Establishment of a digital simulated testing platform for radiation protection performance and preparation of three-layer coated flexible composites

“…Using the three-layer coated flexible composite as an example, its preparation process is shown in Figure 4, which is divided into preparation of the three layers of the heat insulating coating, fireproof heat insulated coating and thermal radiation protective coatings: 18,19 Preparation of the heat insulating coating With the dispersion machine set to 30 min and a speed of 500 r/min, fillers such as aerogel, mica powder, ultrafine kaolin and talcum powder were added slowly into the organic silicone resin in turn, then the coupling agent KH550 was added. 20 After the materials were added, the stirring speed was increased to 1800 r/ min. When the liquid coating preparation was complete, the sheared basalt fiber woven fabric (dimensions 15 cm  40 cm) was fixed in the needle plate rack of the coating machine to carry out the coating.…”

Thermal insulation and mechanical properties of carbon fiber‐reinforced thermoplastic polyphthalazine ether sulfone ketone composites reinforced by hollow glass beads

“…Filler modification is a crucial process to improve material properties 23 . Among thermal insulation fillers, common types include hollow beads, SiO 2 aerogel, and potassium titanate whiskers, and so forth 24,25 . Hollow beads are a relatively new type of lightweight thermal insulation material with a low thermal conductivity of 0.03 W·m −1 ·K −1 due to the thin, stable, static gas inside 26 .…”

“…These beads also possess high compressive strength, high‐temperature resistance, and a small thermal shrinkage coefficient 27 . Their unique properties have earned them the nickname of “space age material” in the new century 24 . Yang et al 28 investigated the impact of hollow glass beads (HGB) on the thermal insulation capabilities of PVC composites.…”

“…23 Among thermal insulation fillers, common types include hollow beads, SiO 2 aerogel, and potassium titanate whiskers, and so forth. 24,25 Hollow beads are a relatively new type of lightweight thermal insulation material with a low thermal conductivity of 0.03 WÁm À1 ÁK À1 due to the thin, stable, static gas inside. 26 These beads also possess high compressive strength, high-temperature resistance, and a small thermal shrinkage coefficient.…”

“…27 Their unique properties have earned them the nickname of "space age material" in the new century. 24 Yang et al 28 investigated the impact of hollow glass beads (HGB) on the thermal insulation capabilities of PVC composites. They found that when the HGB content was 10%, the material exhibited a significantly low thermal conductivity of 0.2768 WÁm À1 ÁK À1 .…”