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Related Concept Videos

Wood Products01:21

Wood Products

79
Wood products encompass a broad range of materials crafted from wood strands, veneers, lumber, and even waste wood-like shreds, designed for both structural and nonstructural purposes. Various specialized wood products have been developed to enhance strength, durability, and versatility in building applications.
Glue-laminated wood, often referred to as glulam, combines multiple smaller pieces of dimensional lumber using adhesives to form a single, larger piece. Cross-laminated timber consists...
79
Wood Panel Products01:18

Wood Panel Products

70
Wood panel products are essential materials used in construction for applications such as flooring, siding, and roofing, typically available in standard dimensions of 4 feet by 8 feet, with thicknesses varying from one-quarter of an inch to one and one-eighth inches. Among the most common types of wood panels is plywood, which is produced by gluing multiple layers of thin wood veneers under pressure. The grain of the outer veneers runs lengthwise, while the grains of the interior layers run...
70
Thermal Insulation in Masonry Walls01:22

Thermal Insulation in Masonry Walls

104
In hot, dry climates, the thermal mass of masonry walls can be beneficial, absorbing heat during the day and releasing it at night, thereby stabilizing indoor temperatures. However, in most other climates, additional insulation is necessary to enhance thermal resistance.
External insulation can be applied using an Exterior Insulation and Finish System (EIFS), which involves affixing panels of plastic foam to the wall and covering them with a polymeric stucco reinforced with glass fiber mesh....
104
Introduction to Wood01:19

Introduction to Wood

204
Wood, derived from trees, is a versatile and widely used construction material. Trees feature a trunk surrounded by a protective layer of dead bark. Beneath this outer layer lies the living bark, followed by the cambium, and then the sapwood which transitions into heartwood as it matures. At the center of the trunk is the pith. The age of a tree can be discerned by examining its growth rings, which are concentric bands visible in the trunk's cross-section.
The structural integrity of the...
204
Composite Masonry Walls01:18

Composite Masonry Walls

808
Composite masonry walls combine multiple wythes of the same or different masonry materials to create a unified structure. These walls feature wythes that are bonded together either through mortar-filled collar joints, grouted spaces, or more commonly, with rigid metal ties and reinforcements, with the use of masonry header units being rare. Metal ties are preferred because they effectively minimize water penetration, as these walls primarily absorb moisture and then release it into the...
808
Softwoods and Hardwoods01:28

Softwoods and Hardwoods

137
Softwoods and hardwoods, derived from different types of trees, are distinguished by their leaf structures and cellular compositions, each serving unique purposes in construction and manufacturing. Softwoods come from cone-bearing trees with needle-like leaves and are predominantly composed of longitudinal cells called tracheids and a smaller proportion of radial cells known as rays. Due to their cellular structure, softwoods are commonly used in construction for structural frames, sheathing,...
137

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Updated: Jun 2, 2025

Fabrication and Design of Wood-Based High-Performance Composites
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Ultraviolet-Shielded Transparent Wood with Improved Interface for Insulating Windows.

Jingyu Wu1, Yun Shi1, Xiaolu Wen1

  • 1MOE Engineering Research Center of Forestry Biomass Materials and Bioenergy, Beijing Forestry University, Beijing 100083, China.

ACS Applied Materials & Interfaces
|January 16, 2025
PubMed
Summary

Transparent wood composites offer improved optical and mechanical properties for energy-efficient windows. This new material effectively blocks UV radiation and provides excellent thermal insulation, outperforming traditional glass.

Keywords:
4-ethenyl-phenylboronic acidinsulationtransparent woodultraviolet-blocking

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Area of Science:

  • Materials Science
  • Sustainable Building Materials
  • Polymer Composites

Background:

  • Transparent wood (TW) is explored for energy-efficient building products but faces limitations in size, thickness, and functional filler integration.
  • Existing TW technologies struggle with optical and mechanical property compromises, hindering widespread use in window applications.

Purpose of the Study:

  • To develop a wood composite material (WCM) with enhanced optical, mechanical, thermal insulation, and UV-shielding properties.
  • To overcome limitations of existing transparent wood by utilizing peracetic acid (PAA) delignification and incorporating 4-vinylphenylboric acid (VPBA).

Main Methods:

  • Delignified wood (DW) was prepared using peracetic acid (PAA) for better structural integrity and polymer infiltration.
  • Methyl methacrylate (MMA) and 4-vinylphenylboric acid (VPBA) were used to create the wood composite material (WCM).
  • Optical, mechanical, UV-blocking, and thermal insulation properties of the WCM were evaluated.

Main Results:

  • PAA delignification preserved hemicellulose and pore structure, enabling thicker and larger transparent wood.
  • The WCM achieved approximately 90% transmittance and 55% haze, with mechanical strength of 64.5 MPa.
  • The material effectively blocked 100% of UV-C and UV-B, and 90% of UV-A radiation, while maintaining visible light transmittance.
  • WCM demonstrated low thermal conductivity, indicating superior thermal insulation compared to conventional glass.

Conclusions:

  • The developed WCM offers a promising alternative to conventional glass for window applications due to its superior optical, mechanical, UV-blocking, and thermal insulation properties.
  • The use of PAA and VPBA provides a pathway to overcome existing limitations in transparent wood technology.
  • This advanced material is well-suited for energy-efficient building products and sustainable construction.