LATEST NEWS
TODAY'S FEATURED ARTICLE
Bakelite phenolic
The limitations of celluloid led to the next major advance, known as "phenolic" or "phenol-formaldehyde" plastics. A chemist named Leo Hendrik Baekeland, a Belgian-born American living in New York state, was searching for an insulating shellac to coat wires in electric motors and generators. Baekeland found that mixtures of phenol (C6H5OH) and formaldehyde (HCOH) formed a sticky mass when mixed together and heated, and the mass became extremely hard if allowed to cool and dry.
He continued his investigations and found that the material could be mixed with wood flour, asbestos, or slate dust to create "composite" materials with different properties. Most of these compositions were strong and fire resistant. The only problem was that the material tended to foam during synthesis, and the resulting product was of unacceptable quality.
Baekeland built pressure vessels to force out the bubbles and provide a smooth, uniform product. He publicly announced his discovery in 1909, naming it "bakelite". It was originally used for electrical and mechanical parts, finally coming into widespread use in consumer goods in the 1920s. When the Bakelite patent expired in 1927, the Catalin Corporation acquired the patent and began manufacturing Catalin plastic using a different process that allowed a wider range of coloring.
Bakelite was the first true plastic. It was a purely synthetic material, not based on any material or even molecule found in nature. It was also the first "thermoset" plastic. Conventional "thermoplastics" can be molded and then melted again, but thermoset plastics form bonds between polymers strands when "cured", creating a tangled matrix that cannot be undone without destroying the plastic. Thermoset plastics are tough and temperature resistant.
Bakelite was cheap, strong, and durable. It was molded into thousands of forms, such as radios, telephones, clocks, and, of course, billiard balls. The U.S. government even considered making one-cent coins out of it when World War II caused a copper shortage.
Phenolic plastics have been largely replaced by cheaper and less brittle plastics, but they are still used in applications requiring its insulating and heat-resistant properties. For example, some electronic circuit boards are made of sheets of paper or cloth impregnated with phenolic resin.
http://www.wikipedia.org
Milk Crates Land O K Crates" In Those Days The Wall And Used Byexporters Of Plastic Moulded Furniture, Plastic Bottle Crates, Milk Crates & Precision Ponents According To
Bottle Crates Plastic Products Chicken Cages Plastic Products Fruit Containers Plastic Products Paving Plastic Products Garden Furniture Furniture
Plastic Bottles in Singapore (SG), Asia - Page 1
Bottle Mfrs - Bottles & Bottling Products - Plastic Bottles - Plasticbottle Caps & Seals - Bottle Mfrs - Bottles & Bottling Products - Plastic Bottles
plastic crates - injection moulded packaging, trays, pallets
Plastic Crates, Trays And Pallets - Injection Moulded Plastic Packaging By Dw Plastics. Plastic Packaging Made From High Pressure Injection Moulding.
SINGA PLASTICS LTD : The Green Book
Bins: Plastic. Bottle Crates: Plastic. Boxes: Plastic. Cable Coverplastic Containers. Plastic Crates: Bottle. Plastic Extrusions. Plastic Household Wares
Plastic Bottles in Malaysia (MY), Asia - Page 1
Bottle Mfrs - Bottles & Bottling Products - Plastic Bearings - Plastic Bins - Plasticbottle Mfrs - Bottles & Bottling Products - Plastic Bottle Crates - Plastic Bottles
Rubber & Plastic Products - Manufacturers,Exporters,Suppliers
Browse Tothi.com For Products And Services In Rubber & Plastic Products,equipment,supplies, Manufacturers,exporters,suppliers,traders,companies,factories
Bottles & Bottling Products in Singapore (SG), Asia - Page 1
Bottle Mfrs - Bottles & Bottling Products - Glass Bottles - Plastic Bottles1000+ Plastic Bottle Manufacturers Shop Locally & Save On Shipping Now
sino plastic mould Plastic Bottle Crates, Plastic Containers
Sino Plastic Mould Is One Quality China Supplier For You To Purchase Plastic Bottle Crates, Plastic Containers, Plastic Chairs, Plastic Bottles, Plastic Bins
plastic crates - Products for plastic crates - Manufacturers
Product Catalogs For Plastic Crates, Search Ec21.com For Sell And Buy Offers, Trade Opportunities, Manufacturers, Suppliers, Factories, Exporters, Trading Agents, Page 6
Oil Bottles in Containers and Barrier Packaging Suppliers
Lar: Production Of Plastic Crates. The Plastic Crates Are Suitable For Industry And Agriculture. The Crates Can Have The Punched Walls And Different Sizes.
Bottle Crates in Containers and Barrier Packaging Suppliers
8 Suppliers Of Bottle Crates Services Inplastic Injection Moulders ,bottle Crates,multipurpose Clear Lid Plastic Boxes,multipurpose Flanged Lid Plastic Boxes,
KENG WAH IMPORT & EXPORT : The Green Book
Conductive Plastic Sheets. Containers: Plastic. Crates: Plastic Bottleplastic Corrugated Boxes. Plastic Crates: Bottle. Plastic Household Wares. Plastic
Plastic Bottle Cap Recycling | Green Ant | Making It Happen
Green Ant Plastic Recycling Buying And Selling Uk Plastic Waste And Offering Plastic Recycling Services And Uk Wide Collections Of Plastic Bottle Caps For Recycling.
Activities Injection Moulding Of Plastics From 5 Gr To 10.000 Gr In Pp, Abs, Pe, Pvc, Pa6, Pc, Pom, Ps Injection Moulding Of Plastics With High Precision
Plastic Crates For Export, Storage And Shipping
Plastic carrier for fluid containers - Patent 4095720
A Carrier For Containers, Such As Bottles, The Carrier Being Made Of Plastic, Being Nestable With Identical Carriers When Empty And Being Formed To Be Stacked, When
Plastic Packaging Service in Malaysia (MY), Asia - Page 1
If You Are Looking For Plastic Packaging Service, Search Them Here On The World's Global Search Engine.plastic Bottle Crates - Plastic Containers - Plastic Injection
Schoeller Arca Systems presents new bottle crates and
Schoeller Arca Systems Presents New Bottle Crates And Novelties At Drinkteclarge Containers, Plastic Pallets For Kegs And Bottle Crates, Foldable Intermediate Bulk
ENKO ® - Manufacturer of plastic crates, plastic boxes
Crates; Poultry Crates; Manufacturing Uses Crates; Industrial Uses Crates; Bottle Crates; Euro Standard Crates; Stack And Nest Crates; One-way Crates
Pallets in Indonesia (ID), Asia - Page 1
Skidmarx Plastic Pallets Affordable For One Way Use, 1500 Lb. Capacityplastic Bottle Crates. Plastic Containers. Plastic Products. Storage System Containers
Bottle Crates - Europe - Suppliers of Bottle Crates on
Looking To Source Suppliers Of Bottle Crates In Europe. See Page 1 Of 1 Supplier Pages With Kellysearch.