Plastic applications


Posted December 19, 2014 by cnmoulding

Custom Plastic Injection Molding Maker,Factory,Manufacturer,Supplier,Exporter of plastic products and parts in China

 
Plastic applications

We specialize in precision injection mould design, manufacture and precision injection molding.
Tidy on plastic materials based on many years of work experience in the practical application of experience:
One feature 1, definitions of commonly used plastics materials: plastic plastic is a synthetic or natural polymers as the main constituent of substances usually contain additives such as secondary ingredients, broadly speaking, he is a certain temperature and pressure could create a certain shape of plastic polymer organic material. Published in 1996, the new national standard (GB/t 2035-1996) plastics redefined as: polymers as the main ingredient, and at some stages of processing into finished products can flow molding materials.

2, the composition of the plastics: Plastics is the main ingredient of synthetic resin, coupled with some additives and fill material.
A,----of synthetic resins and synthetic organic macromolecular compound, its structural unit mainly consists of carbon, hydrogen, oxygen atoms and others such as sulfur atoms and silicon atoms by chemical bonds, and other connections. -----B, fill materials with glass fiber, carbon fiber, calcium carbonate (CaCO3), silicon dioxide (SiO2), cotton cloth, metal, wood flour, asbestos, mica and stone powder.
C, additive---------common plasticizers, stabilizers, lubricants, colorants, antistatic agent, flame retardant, UV-resistant agent and so on.

3, in General, plastic materials can be divided into two categories: "thermoplastic plastics" (Thermoplastic) and "thermosetting plastic" (Thermosetting). Thermoplastic plastic at room temperature, typically a granular, heated to molten state after a certain temperature, cooling it after curing, if heated it becomes molten state again, and again in plastic molding. Therefore, the thermoplastic plastic melt repeatedly by heating curing, Thermo-plastic plastic waste can often be recycled so, that is, a so-called "secondary". In contrast, thermoset plastic is heated to a certain temperature curing, even continuing heated cannot change its status. Therefore, the thermosetting plastics cannot repeatedly by reheating, thermosetting plastic waste is often not recycled.

II, plastic by application of range also may is divided into general plastic, and engineering plastic, and special plastic; General plastic common of has: PP, and PVC, and PE, and PS, and,; engineering plastic common of has: ABS, and PC, and PMMA, and POM, and PA6, and PA66, and PET, and PBT, and SAN,; special plastic common of has: PPS, and PEI,; engineering plastic often by some general plastic modified sexual are; as changed some molecular structure, and added other components as glass fiber,Project is to be used as industrial parts or shell material of plastic for industrial use, its strength, impact resistance, heat resistance, hardness and resistance to aging of plastic.

Its features include: a, thermal properties of glass transition temperature (Tg) and melting point (Tm) and high heat distortion temperature (HDT) high, the long-term use of high temperature (UL-746B), using small temperature range, thermal expansion coefficient.
B, mechanical properties: high strength, modulus, low latent degeneration, high mechanical resistance to wear and fatigue.

C other:, excellent chemical resistance, fire resistance, electric resistance, dimensional stability and excellent weather resistance.
Practical application of the common plastic materials 1, ABS material: most commonly used plastic material, many household electrical appliances shell are made of it. With high mechanical strength, heat resistance, chemical resistance and high gloss. Common are Taiwan Chi Mei, and country Joe of ABS. Chimei: ABS PA757 general purpose grade, good gloss; ABS PA727 plating grade ABS PA777D heat resistance level.ABS usually heat denaturation temperature of not more than 88 degrees centigrade.

Its features include: a, thermal properties of glass transition temperature (Tg) and melting point (Tm) and high heat distortion temperature (HDT) high, the long-term use of high temperature (UL-746B), using small temperature range, thermal expansion coefficient.
B, mechanical properties: high strength, modulus, low latent degeneration, high mechanical resistance to wear and fatigue.

C other:, excellent chemical resistance, fire resistance, electric resistance, dimensional stability and excellent weather resistance.
Practical application of the common plastic materials 1, ABS material: most commonly used plastic material, many household electrical appliances shell are made of it. With high mechanical strength, heat resistance, chemical resistance and high gloss. Common are Taiwan Chi Mei, and country Joe of ABS. Chimei: ABS PA757 general purpose grade, good gloss; ABS PA727 plating grade ABS PA777D heat resistance level.
ABS usually heat denaturation temperature of not more than 88 degrees centigrade.

3, nylon PA6, PA66. Polyamide (Nylon) maximum advantage of toughness, excellent fatigue resistance, low coefficient of friction. Often used to make fibers, toothbrush, shredded fish, bushings, packaging film, gears, electric tools, shell, electrical parts, and so on. But the biggest drawback is absorbent, absorbent falling sharply increase its tensile strength. Such as adding a glass fibre can greatly improve its heat-resistance, that is, PA66+GF15%, PA66+GF30% temperature resistance up to 180~210℃. Therefore, there is no plus glass fiber nylon shall not be used for parts with high temperature requirements.

Plastic beer come out as soon as possible after use to avoid placing takes too long to make adverse changes have taken place after water absorption nylon.
Experience only, hope to give you help!For more information,please go to www.chinamoldmaker.org www.plastic-injectionmoulding.com
-- END ---
Share Facebook Twitter
Print Friendly and PDF DisclaimerReport Abuse
Contact Email [email protected]
Issued By shanghai CNMOULDING TECHNIC CO.,LTD
Website www.chinamoldmaker.org
Phone 86-02152913487
Country China
Categories Business , Industry , Manufacturing
Tags injection molding , China plastic , Plastic Injection Molding , Injection molding manufacturer , injection molding china , China Plastic Product , Plastic Manufacturer China
Last Updated December 19, 2014