Fiber the function of strong composite material

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A. What characteristic does composite material have?

B. Must solidify around is opposite beforehand what physics does dip makings have / chemical test?

C. How to test composite material?

Beforehand dip makings stores reach a safety precaution

A. How to store beforehand dip makings?

B. Use what sanitation and safety precaution should take when dip expects beforehand?

Appendix - computation

A. Laminose board fiber bulk content is affirmatory, suck the theoretical calculation of sub

B. The computation of content of bulk of ply of the monolayer after solidify, fiber and composite material density

C. Affirmatory beforehand the fiber bulk content that dip expects colophony content needs with reaching place / ply of the monolayer after solidify

01

Fiber is strong the function of composite material

A. What character does composite material have?

Fiber offers intensity and stiffness in composite material, shoulder major load; The use temperature that matrix colophony decided composite material, tenacity and be able to bear or endure environmental sex. Accordingly, one-way composite material (UD) superior mechanical performance is had on a direction, present anisotropy namely, is not to resemble major metallic stuff presenting isotropy euqally.

As a result of fiber dominant the mechanical function of composite material, accordingly, can design orientaton to achieve requires mechanical performance through fibrous.

Direction: Through fibrous the shop sticks directional design, can optimize the mechanical function of the component.

B. Must solidify around is opposite beforehand what physics does dip makings have / chemical test?

In composite material production process, can be evaluated through the following test beforehand dip makings quality.

Not solidify beforehand dip makings

• Gel time: Below constant temperature condition, colophony grows the time of solid from the liquid. Expression is the mushroom with agglutinant colophony.
• Viscosity: Reflect resinous flow character, its suffer the effect of temperature and rate-of-rise of air temperature.
• Volatilize portion: Expose after established temperature and time, the gaseous quality loss that volatilizes and the percentage that original model essence measures.
• Fluidity: Below constant temperature and pressure condition, colophony quality loss and the percentage that original model essence measures.
• Agglutinant: Beforehand dip makings itself is mutual and stickup, and stickup the ability in mould surface.
• Colophony content: Per cent of weight of unit area colophony.
• Recipe: The ration of chemical component deserves to compare.

After solidify beforehand dip makings

• Vitrification transition temperature (Tg) : Tg states colophony produces the temperature when physical photograph changes, imply its are highest use temperature.
• Fiber bulk content: Fiber is compared in the concentration percentage by volume in composite material.
• Composite material density: Unit volume quality.
• Solidify spends: Beforehand the solidify degree that dip expects.
• CPT: The monolayer ply after solidify.

C. How to test composite material?

02

Beforehand dip makings stores reach a safety precaution

A. Beforehand how should dip makings store?

Receive beforehand after dip expects, should deposit its instantly in - in the refrigeratory of 18 ℃ .

To avoid be affected with damp be affected with damp, before opening polyethylene bag, ying Xianrang beforehand dip makings is answered lukewarm to room temperature (the complete likelihood that pack needs 48 hours) .

Generally speaking, be in - below the state that 18 ℃ save, beforehand the expiration period that dip expects is have 12 months from production day. Imprint on the label of the dip makings box that pack beforehand have - the expiration period when 18 ℃ and room temperature expiration period. The agglutinant life when 23 ℃ and outside buy life because of colophony different, there is a regulation in relevant product data table.

Definition:

• The expiration period: - 18°C, what the condition of sealed and moistureproof bag that pack falls is the longest store life. There is term of validity on the label that pack.
• Agglutinant life: Below room temperature, beforehand dip expects can retentive comfortable stick agglutinant time at the shop.
• Outside buy life: Take out what what allow between solidify from refrigeratory the biggest room temperature accumulates time.

Note

• Prop up through axes from beginning to end beforehand dip makings.
• The record is absent the time of refrigeratory.
• After using, with adhesive plaster beforehand dip makings coils close, with preventing to wrinkle.
• Will beforehand dip makings is sealed, put a case, replace refrigeratory is saved.

B. Use what sanitation and safety precaution should take when dip expects beforehand?

Beforehand the safe risk that dip makings is using a field is very little, the reason is as follows:

• Beforehand dip makings contains diaphragm all the time before the shop is stuck, after cutting out again purify diaphragm, accordingly, direct contact beforehand the circumstance that dip expects actually nonexistent.
• And wet technology is different (dry fiber, liquid state colophony) , beforehand dust of fiber of dip makings craft is dinky, and without splatter, mix without leak spill over.
• Beforehand dip makings is not had below normal temperature volatilize.
• Below normal temperature, beforehand what dip expects is agglutinant in be in low-level.

However, still should abide by when the operation normally precautionary measures, namely: Adorn from beginning to end glove, ensure its cover an arm, in order to avoid the contact of the skin and product. Falling without protective condition repeat feeling beforehand dip makings can cause allergic reaction.

The product after machining solidify can produce the dust that contains fiber material, should avoid inspiratory. The proposal installs aspiration to device is extracted and gather dust in cut area. To prevent fire and explosion, treatment should avoid the formation of dust when solidify product, avoiding igneous cause O to contain the dust dirt of carbon fiber is electric.

03

Appendix I is calculated

A. Below the case with particular content of bulk of fiber of layer pressing plate, suck the theoretical calculation of glue number of plies

By carbolic fine / Bo fine / the one-way, fabric that fiber of fragrant black silk ribbon produces beforehand dip makings, the suction of any material forms the computation of glue number of plies all uses this means.

B. The computation of content of bulk of ply of the monolayer after solidify, fiber and composite material density

C. Affirmatory beforehand the fiber bulk content that dip colophony content wants with reaching place / ply of the monolayer after solidify

After fiber and colophony are affirmatory, help of the following chart decides corresponding colophony content and fiber gram are heavy, in order to obtain ply of the monolayer after a needed fiber bulk content and solidify.

Fiber bulk content

Ply of the monolayer after solidify