THE MAIN MATERIALS UTILIZED AND THE REASONS

from BUILDING SCIENCE AND SERVICES

by Hiruthikga Sandra Kumar

DESIGN PROBLEM & SOLUTION

Transparent Sheet

Butter Paper

Craft Board

Black Mounting Board Kevlar Thread

Bamboo sticks

Bamboo Sticks:

The bamboo sticks are the main material/ structure of the prototype.

Re:

Bamboo is a natural fiber, which means it's an incredible heat-insulator material. Due to the anisotropic nature of its low thermal conductivity, the PLA-bamboo “ green ” composites have excellent insulation properties. Bamboo will have a small insulating factor by comparison to stone, but it still has an exemplary heat transfer and will warm the home or a particular place effectively. The constructional reason to use bamboo sticks is because of their lightweight convenience to replace/ carry and remove the product.

Craft Board:

The craft board serves as the foundation of the prototype

Re:

Lightweight and convenient to make model/prototype

Black Mounting Board:

The Black Mounting Board serves as the frame/backing board

Re:

This tackles and stands out the prototype and gives the shadow when the sunlight appears.

Kevlar Thread:

Utilized needle-sized/codes of Kevlar Threads which are 30320 (white) and 30322 (Yellow and Green). The Kevlar serves as the functional material and also serves as the decoration part of the prototype.

Re:

Kevlar thread (also called Para-Aramid) is one of the strongest and most heatresistant commercially available threads. It is about 2.5 times stronger than nylon and polyester, has minimal stretch, does not melt, and decomposes at 800F. This makes it a great choice for high-stress applications including sewing seams on heavy-duty clothing and more. The constructional reason to use this material is for the quality and characteristics of the thread and as a part of the decoration part of the prototype to provide visual comfort.

Decomposition - Kevlar begins to decompose (turn to ash) at about 800F (426C); Much higher than nylon or polyester.

Melting - Kevlar thread does not melt.

Stretch - Kevlar thread stretches about 2% before it breaks. For example, a 100foot piece of Kevlar would be 102 feet long just before it breaks.

Acids and Alkalis - Good resistance to dilute acids and bases. Degraded by strong mineral acids and to a lesser extent, by strong mineral bases.

Bleaching and Solvents - No bleach. Excellent solvent resistance.

Mildew, Aging, and Sunlight - Outstanding resistance to mildew and aging. Protracted exposure to sunlight causes deterioration. Polyester thread works just as well in some cases.

Abrasion - Good abrasion resistance.