Key details – Weight: 2g; Compatible materials: All plastics, including PP and PE; Applicator: Activator pen and nozzle glue Engelsmann, Stephan; Spalding, Valerie; Peters, Stefan (1 January 2010). Plastics: in Architecture and Construction. Walter de Gruyter. ISBN 9783034611947. Adhesive, also known as glue, cement, mucilage, or paste, [1] is any non-metallic substance applied to one or both surfaces of two separate items that binds them together and resists their separation. [2] Another important thing to know is that a little goes a long way with this powerful adhesive. In fact, Gorilla recommends using just one drop of glue per 6.5cm2 of surface area, so do be careful when opening the product and applying it.

The first references to adhesives in literature appeared in approximately 2000 BC. Further historical records of adhesive use are found from the period spanning 1500–1000 BC. Artifacts from this period include paintings depicting wood gluing operations and a casket made of wood and glue in King Tutankhamun's tomb. [9] Other ancient Egyptian artifacts employ animal glue for bonding or lamination. Such lamination of wood for bows and furniture is thought to have extended their life and was accomplished using casein (milk protein)-based glues. The ancient Egyptians also developed starch-based pastes for the bonding of papyrus to clothing and a plaster of Paris-like material made of calcined gypsum. [12] Beeswax There are several factors that could contribute to the failure of two adhered surfaces. Sunlight and heat may weaken the adhesive. Solvents can deteriorate or dissolve adhesive. Physical stresses may also cause the separation of surfaces. When subjected to loading, debonding may occur at different locations in the adhesive joint. The major fracture types are the following: Stamm, A.J.; Kuenzi, E.W.; Kollmann, Franz F.P. (2012). Principles of Wood Science and Technology. Springer Berlin Heidelberg. p.1. ISBN 9783642879319.Natural adhesives are made from organic sources such as vegetable starch ( dextrin), natural resins, or animals (e.g. the milk protein casein [35] and hide-based animal glues). These are often referred to as bioadhesives.

Ross, John; Charles Ross (10 October 1876). "Improvement in Processes of Preparing Glue". United States Patent and Trademark Office. Archived from the original on 14 January 2017 . Retrieved 14 April 2013. Adhesion, the attachment between adhesive and substrate may occur either by mechanical means, in which the adhesive works its way into small pores of the substrate, or by one of several chemical mechanisms. The strength of adhesion depends on many factors, including the means by which it occurs.Chris - Can you help me out then, and tell me why I can't get Weetabix off of a bowl that's gone dry. Comment by ThottbotOk, here's some advice: DO NOT DELETE OR SELL THIS STUFF! It still works at level 60 and beyond, and is wonderful for PVP. Pressure-sensitive adhesives are manufactured with either a liquid carrier or in 100% solid form. Articles are made from liquid PSAs by coating the adhesive and drying off the solvent or water carrier. They may be further heated to initiate a cross-linking reaction and increase molecular weight. 100% solid PSAs may be low viscosity polymers that are coated and then reacted with radiation to increase molecular weight and form the adhesive, or they may be high viscosity materials that are heated to reduce viscosity enough to allow coating, and then cooled to their final form. Major raw material for PSA's are acrylate-based polymers.

Key details – Weight: 5g; Compatible materials: China, rubber, wood, metal, plastics (except PE and PP); Applicator: Nozzle A watch with a date magnifying lens ("cyclops"). The cyclops is attached with transparent UV light curing adhesive to the top of the watch crystal.

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While many super glues are suitable for use on some plastics, Loctite’s plastic-focused product is suitable for use on all plastics. These include polyethylene (PE) and polypropylene (PP), which some of the other products on our list specifically specify they don’t work on. In some cases, an actual chemical bond occurs between adhesive and substrate. Thiolated polymers (= thiomers), for example, form chemical bonds with endogenous proteins such as mucus glycoproteins, integrins or keratins via disulfide bridges. [38] Because of their comparatively high adhesive properties, these polymers find numerous biomedical applications. In others, electrostatic forces, as in static electricity, hold the substances together. A third mechanism involves the van der Waals forces that develop between molecules. A fourth means involves the moisture-aided diffusion of the glue into the substrate, followed by hardening. Adhesive fracture (sometimes referred to as interfacial fracture) is when debonding occurs between the adhesive and the adherend. In most cases, the occurrence of adhesive fracture for a given adhesive goes along with smaller fracture toughness. Kinloch, A.J. (1987). Adhesion and Adhesives: Science and Technology (Reprinted.ed.). London: Chapman and Hall. p.1. ISBN 0-412-27440-X. From AD 1 to 500 the Greeks and Romans made great contributions to the development of adhesives. Wood veneering and marquetry were developed, the production of animal and fish glues refined, and other materials utilized. Egg-based pastes were used to bond gold leaves, and incorporated various natural ingredients such as blood, bone, hide, milk, cheese, vegetables, and grains. [9] The Greeks began the use of slaked lime as mortar while the Romans furthered mortar development by mixing lime with volcanic ash and sand. This material, known as pozzolanic cement, was used in the construction of the Roman Colosseum and Pantheon. [12] The Romans were also the first people known to have used tar and beeswax as caulk and sealant between the wooden planks of their boats and ships. [9]

Pike, Roscoe. "adhesive". Encyclopædia Britannica Online. Encyclopædia Britannica Inc . Retrieved 9 April 2013. Kozowyk, P. R. B.; Soressi, M.; Pomstra, D.; Langejans, G. H. J. (31 August 2017). "Experimental methods for the Palaeolithic dry distillation of birch bark: implications for the origin and development of Neandertal adhesive technology". Scientific Reports. 7 (1): 8033. Bibcode: 2017NatSR...7.8033K. doi: 10.1038/s41598-017-08106-7. ISSN 2045-2322. PMC 5579016. PMID 28860591. Mittal, K.L.; Pizzi, A. (2003). Handbook of Adhesive Technology. New York: Marcel Dekker. ISBN 0824709861. Some glues and adhesives have a limited shelf life. Shelf life is dependent on multiple factors, the foremost of which being temperature. Adhesives may lose their effectiveness at high temperatures, as well as become increasingly stiff. [40] Other factors affecting shelf life include exposure to oxygen or water vapor. In Europe, glue fell into disuse until the period AD 1500–1700. [14] At this time, world-renowned cabinet and furniture makers such as Thomas Chippendale and Duncan Phyfe began to use adhesives to hold their products together. [9] In 1690, the first commercial glue plant was established in The Netherlands. This plant produced glues from animal hides. [15] In 1750, the first British glue patent was issued for fish glue. The following decades of the next century witnessed the manufacture of casein glues in German and Swiss factories. [9] In 1876, the first U.S. patent (number 183,024) was issued to the Ross brothers for the production of casein glue. [9] [16]Pressure-sensitive adhesives (PSA) form a bond by the application of light pressure to marry the adhesive with the adherend. They are designed to have a balance between flow and resistance to flow. The bond forms because the adhesive is soft enough to flow (i.e., "wet") to the adherend. The bond has strength because the adhesive is hard enough to resist flow when stress is applied to the bond. Once the adhesive and the adherend are in close proximity, molecular interactions, such as van der Waals forces, become involved in the bond, contributing significantly to its ultimate strength. Common ways of applying an adhesive include brushes, rollers, using films or pellets, spray guns and applicator guns ( e.g., caulk gun). All of these can be used manually or automated as part of a machine.