PC Injection Molded Parts

PC injection molded parts engineering plastic is a polymer made of bisphenol-a in the bishydroxy compound and diphenylcarbonate in the carbonate compound by the transesterification (melt method) reaction. Carbonate resin. The main products of Zhongwei Precision Machinery Co., Ltd. are nylon products, plastic products, ABS series, rubber products, etc. Types of injection molding materials that can be processed: polyethylene (PE), polypropylene (PP), nylon (PA, PA6, PA66), polyoxymethylene (POM), ABS, polyurethane (TPU), polyphenylene sulfide (PPS), polystyrene Carbonate (PC), Polyetheretherketone (PEEK), etc.

Product Description

1. Implementation standards: the company strictly implements ISO9001, ISO14001, IATF16949, VDA6.3 certification, and products have passed ROHS, FDA EU certification, etc.

2. Product material standards: ISO, GB, ASTM, SAE, EN, DIN, BS, AMS, JIS, ASME, DMS, TOCT, GB

3. Main processes: plastic injection molding, metal insert injection molding, investment casting, die-casting aluminum

4. Available materials for injection molding:

Processable nylon products, plastic products, ABS series; injection molding material types: polyethylene (PE), polypropylene (PP), nylon (PA, PA6, PA66), polyoxymethylene (POM), ABS, polyurethane (TPU), poly Phenyl sulfide (PPS), polycarbonate (PC), polyether ether ketone (PEEK) and 3D printing can be customized according to customer requirements.

Product Features and Applications

PC injection molded parts is a polycarbonate polymerized from bisphenol-a in the bishydroxy compound and diphenylcarbonate in the carbonate compound by transesterification (melt method) reaction resin. It is a thermoplastic engineering plastic with excellent performance. It has outstanding impact resistance, good creep resistance and dimensional stability, heat resistance, low water absorption, non-toxicity, and excellent dielectric properties. It is the only engineering plastic with good transparency. It is also the fastest growing general engineering plastics in recent years.

Polycarbonate (Polycarbonate) commonly used abbreviation PC is a colorless and transparent amorphous thermoplastic material. Its name comes from the CO3 group inside it. Chemical Properties Polycarbonate is acid and oil resistant. Polycarbonate is not resistant to UV light and strong alkali. Physical Properties Polycarbonate is colorless and transparent, heat-resistant, impact-resistant, flame-retardant, and has good mechanical properties at ordinary operating temperatures. Compared with the performance close to polymethyl methacrylate, polycarbonate has good impact resistance, high refractive index, good processing performance, and has UL94 V-0 flame retardant performance without additives. However, polymethyl methacrylate is relatively cheap compared to polycarbonate, and large-scale devices can be produced by bulk polymerization. With the increasing production scale of polycarbonate, the price difference between polycarbonate and polymethyl methacrylate is shrinking. Polycarbonate has poor abrasion resistance. Some polycarbonate devices for wear-prone applications require special surface preparation. PC production history and application Polycarbonate is a common material in daily life. Due to its colorless transparency and excellent impact resistance, common daily applications include optical discs, eye pieces, water bottles, bulletproof glass, goggles, bank bulletproof glass, headlights, etc., animal cages, pet cages, etc. Polycarbonate was also used to make the helmet visors of astronauts on the moon. The laptop case is also made of polycarbonate. Environmental Impact Food Contact Producers and buyers of food storage goods prefer polycarbonate due to its clarity and toughness. When compared to silica glass, polycarbonate is as lightweight and highly unbreakable. Polycarbonate is mostly used in single-use plastic water bottles and reused plastic water bottles. Over 100 studies have explored the ecological response of polycarbonate bisphenol A leachates. Howdeshell et al found that an endocrine disruptor, Bisphenol A (C15H16O2) (phenol methane), appeared to be infiltrated into water from polycarbonate animal cages at room temperature and that it may be responsible for the development of reproductive organs in female mice. A paper published in August 2005 on the analysis of the effects of low doses of bisphenol A leachate, appeared to suggest a relationship between financial support and conclusions: Industry-funded studies appeared to tend not to find significant effects; Government-funded research tends to find significant impact. Can react chemically with other substances. Sodium oxide and other alkaline cleaners should not be used on polycarbonate as they will lead to the release of Bisphenol-A (C15H16O2), a known endocrine disruptor (affects the reproductive system). Polycarbonate PC is also a kind of material used in notebook computer shells. Its raw material is petroleum. After being processed by a polyester chip factory, it becomes a polyester chip particle, and then processed by a plastic factory to become a finished product. From a practical point of view , Its heat dissipation performance is also better than ABS plastic, and the heat distribution is relatively uniform. The most prominent use of this material is FUJITSU. This material is used in many models, and the entire shell is made of this material. The PC-GF-## material feels like metal, both on the surface and to the touch. If there is no logo inside the laptop, if you don't look carefully from the outer surface, you may think it is an alloy. CAS No.: 25037-45-01.

PC Processing Method：

PA66 plastic raw materials, PC can be injection, extrusion, molding, blow molding, thermoforming, printing, bonding, coating and machining, the most important processing method is injection molding. It must be pre-dried before molding, and the moisture content should be less than 0.02%. Processing at high temperature will cause the product to produce white turbid color, silver threads and bubbles. PC has considerable forced high elastic deformation capacity at room temperature. High impact toughness, so it can be cold-pressed, cold-drawn, cold-rolled and other cold forming processes. The molecular weight of PC for extrusion should be greater than 30,000, and a gradual compression screw should be used, with a length-to-diameter ratio of 1:18~24 and a compression ratio of 1:2.5. Extrusion blow molding, injection-blow, injection-pull-blow molding can be used. High quality, high transparency bottle. There are many kinds of PC alloys, which can improve the defects such as high melt viscosity (processability) of PC and easy stress cracking of products. PC forms alloys or blends with different polymers to improve material properties. Specifically, PC/ABS alloys, PC/ASA alloys, PC/PBT alloys, PC/PET alloys, PC/PET/elastomer blends, PC/MBS blends, PC/PTFE alloys, PC/PA alloys, etc. It has the advantages of two material properties and reduces costs. For example, in PC/ABS alloys, PC mainly contributes to high heat resistance, good toughness and impact strength, high strength and flame retardancy, while ABS can improve formability. Apparent mass, reducing density.

PC Application：

The three major application areas of PC are the glass assembly industry, the automotive industry and the electronics and electrical appliance industries, followed by industrial machinery parts, optical discs, packaging, computers and other office equipment, medical and health care, films, leisure and protective equipment, etc. PC can be used as door and window glass, and PC laminates are widely used in protective windows in banks, embassies, detention centers and public places, for aircraft canopies, lighting equipment, industrial safety baffles and bulletproof glass. PC board can be used for various signs, such as gasoline pump dials, car dashboards, warehouse and open-air commercial signs, dot slide indicators, PC resins are used in car camera systems, instrument panel systems and interior decoration systems, used as headlight covers, Reinforced car front and rear fenders, mirror frames, door frame covers, operating lever sheaths, spoilers, PC are used as junction boxes, sockets, plugs and bushings, gaskets, TV conversion devices, telephone line support under the communication Cable connectors, switch boxes, switchboards, switchboard components, relay housings, PC can be used as low-load parts for household appliances motors, vacuum cleaners, shampoo, coffee machines, toasters, handles for power tools, etc. All kinds of gears, worm gears, bushings, guide gauges, shelves in refrigerators. PC is an ideal material for optical disc storage media. PC bottle (container) is transparent, light in weight, good in impact resistance, resistant to certain high temperature and corrosive solution washing, as a recyclable bottle (container). PC and PC alloys can be used as computer racks, shells and auxiliary machines, and printer parts. Modified PC is resistant to high-energy radiation sterilization, retorting and baking sterilization, and can be used for blood sampling equipment, blood oxygenator, surgical instruments, kidney dialyzers, etc. PC can be used as helmets and hard hats, protective masks, sunglasses and sports protection. Blindfolds. PC film is widely used in printing graphics, pharmaceutical packaging, film commutator.

Product Performance

1. Rigid and tough, with high impact resistance, high dimensional stability and a wide range of use temperatures, good electrical insulation and heat resistance and non-toxicity, and can be produced by injection molding and extrusion molding. The expected effect has been obtained, so the development is very rapid, and the current annual consumption in the world has exceeded 300,000 tons.

2. Polycarbonate is a transparent, yellowish or white rigid and tough polymer. When burning, it burns slowly, and when it is removed from the fire, it slowly extinguishes, the flame is yellow, and the black smoke is charcoal. After burning, it melts, foams, and emits a smell of flowers and fruits.

3. Polycarbonate has excellent performance and good light transmittance, and its light transmittance is close to 90%. The relative density is 1.20, which is larger than that of polyolefin, smaller than that of polyoxymethylene and polyvinyl chloride, and similar to that of polymethyl methacrylate.

Post Injection Molding Process

1. Processing equipment: CNC, WEDM, lathe, milling machine, drilling machine, grinder, etc.;

2. Surface treatment: For some products that require subsequent processing, we can provide surface treatment services to achieve the special purpose of customers. At present, we can provide degreasing, polishing, electroplating (gold, silver, nickel, tin, galvanized, etc.), anodizing, electrophoresis and other surface treatment services for precision parts.

Moulds and Inspection Fixtures

1. Mold service life: usually semi-permanent. (except for lost foam)

2. Mold delivery time: 10-25 days, (according to product structure and product size).

3. Tooling and mold maintenance: Zhongwei is responsible for precision parts.

Quality Control

1. Quality control: the defective rate is less than 0.1%.

2. Samples and trial run will be 100% inspected during production and before shipment, sample inspection for mass production according to ISDO standards or customer requirements

3. Testing equipment: automated visual inspection equipment can carry out 100% inspection of products, spectrum analyzer, golden elephant analyzer, three-coordinate measuring machine, hardness testing equipment, tensile testing machine.