science

Gold Flex

Gold Flex is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Gold Flex rather than just read about it. In short: Gold Flex is a non-woven fabric manufactured by Honeywell from Kevlar, and is often used in ballistic vests and body armor. Gold Flex is lighter than woven Kevlar, Twaron and other Ballistic material.

Key takeaways

Gold Flex belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Gold Flex to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Gold Flex from memory before moving on to harder problems.

Reference excerpt

Gold Flex is a non-woven fabric manufactured by Honeywell from Kevlar, and is often used in ballistic vests and body armor. Gold Flex is lighter than woven Kevlar, Twaron and other Ballistic material. Gold Flex is a laminated material consisting of cross-laid, non-woven fibers in a resin matrix. The fibers are laid straight and not in a woven fabric configuration. When an object strikes this material, a "web" of its clusters absorb the impact and minimizes penetration. Honeywell describes "Gold Shield" as being almost identical, only either using two plies instead of four, or using a different resin, depending on version. Both products use Honeywell's patented "Shield" technology, which is present in their Spectra Shield.

Protection Gold Flex gives resistance to abrasion and resists organic solvents making it non-conductive and non-flammable. Its degradation point starts at 500 °C (932 °F) and it has no melting point. It is sensitive to salts, acids, and ultraviolet radiation. GoldFlex causes static build up. Protection is also based on the pressure of the impact. Some of these fabrics are only designed with hand-guns in mind basically making anything with a bigger caliber a threat potential. One cannot wear a GoldFlex and expect a large caliber round (E.G .50 BMG round) to be stopped from penetrating it. Also GoldFlex is not the only material that is responsible for minimizing penetration and absorbing the attack. Along with GoldFlex there are other layers on top of this fabric to ensure that the object does not penetrate through the material.

Armor When a bullet strikes the body armor, it hits ballistic fibers which are strong enough to not penetrate through. This fiber absorbs and disperses the impact that has been made by the bullet to the body armor. This process continues and every layer of this material is effected until the bullet has come to a full stop. All layers combined form a larger area of the impact to disperse and keep the bullet from penetrating the carrier. This helps in reducing the risk of blunt force trauma.

Production

[1]

Comparison with other materials

Kevlar is five times stronger than steel of equivalent weight. It was invented by a Polish-American chemist Stephanie Kwolek and introduced in the 1970s. It is used for body armor and racing tires but is more expensive than Gold Flex. Twaron is another alternative to Gold Flex but is not much in demand. Occasionally several materials are used in one product.

See also Ultra-high-molecular-weight polyethylene Improved Outer Tactical Vest

References

[2] Aramid Ioffe Institute Databases WebElements.com ChemSpider - The free chemical database, The Royal Society of Chemistry Honeywell manufacturer of the Gold Flex fabric. About Gold Flex. Information "Bullet Proof Shop". Bullet Proof Shop. Archived from the original on 22 January 2011. Retrieved 4 April 2013. "Rhino Armor". rhino armor. Archived from the original on 15 April 2013. Retrieved 4 April 2013. "Blanket of Gold Flex". interamer. Retrieved 4 April 2013.

External links EINECS (European INventory of Existing Commercial chemical Substances) Ratio International Corporation Crystal Structure Catalogue Deprecated link archived 2013-06-20 at archive.today https://web.archive.org/web/20101120153843/http://cas.org/products/sfacad/index.html http://webbook.nist.gov/chemistry/ Spectral Database for Organic Compounds, SDBS Archived 2013-01-14 at the Wayback Machine http://chemfinder.cambridgesoft.com/ Archived 2013-04-11 at the Wayback Machine http://www.astm.org American Society for Testing and Materials (ASTM)

Illustrations

Worked examples

Example 1 — a first encounter with Gold Flex

Start with the simplest possible case. Write down what Gold Flex claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Gold Flex before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Gold Flex ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Gold Flex

In research: Gold Flex appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Gold Flex in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Gold Flex is common in secondary-school and first-year university syllabi. It links to neighbouring topics Body armor, Bulletproofing, Synthetic fibers, so understanding it makes those chapters shorter.
In everyday life: Look for Gold Flex outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Gold Flex in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Gold Flex means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Gold Flex out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Gold Flex in simple terms?

Why does Gold Flex matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Gold Flex?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Gold Flex.