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Magnesium and Carbon Fiber Among New Materials Helping the Auto Industry with Lightweigthing

Posted By ASC, Wednesday, August 17, 2016

For some time, we have seen the auto industry making increasing use of aluminum and high-strength steel in order to produce lighter vehicles that use less fuel and perform better on the road. Now magnesium and carbon fiber are being explored by a number of auto manufacturers. General Motors (GM) says that Magnesium, despite its lower melting point and lower strength when compared to steel, is suitable for large castings and specific parts.

 

The metal is 33% lighter than aluminum and just as corrosion resistant. Casting and machining does not present any challenges, and because it is workable at lower temperatures, the equipment used to shape the parts will last longer. At present, GM is looking at magnesium as a possible alternative material for car doors and trunks.

 

The lightweighting benefits of carbon fiber have long been known, but the material was previously too expensive for use in auto manufacture. This seems to have changed, and General Motors are currently designing and testing carbon-fiber wheels that will allow them to shed 40 pounds or more from a vehicle’s overall weight. After all, this material is five times stronger than steel and twice as rigid, besides having the capacity to assume almost any shape.

 

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Adhesive Patch Delivers Combination of Three Treatments to Tumor Sites

Posted By ASC, Tuesday, August 16, 2016

Five percent of people will suffer from colorectal cancer in their lifetime, and fifty percent of tumors reappear after surgery. But now an adhesive patch can reduce that risk. Researchers at MIT have developed an adhesive patch that can deliver drug, gene and light-based therapy to the tumor site. This may even eliminate the need for chemotherapy and the unpleasant side effects that go with it. In addition, it is expected to prove much more effective because it delivers the treatment at the target site.

 

The triple therapy is delivered via a hydrogel patch that contains gold Nano-rods. When the patch is exposed to near-infrared radiation, the Nano-rods heat up, destroying the tumor cells. At the same time, they release the necessary drugs, directly targeting the affected site. The patch also contains gold nanospeheres. They don’t heat up when exposed to near-infrared. Instead, they deliver RNA to the site, preventing healthy cells from turning into cancerous cells.

 

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Food Grade Tape Helps Reduce Volume of Packaging Materials to Market

Posted By ASC, Monday, August 15, 2016

Nowadays, both producers and consumers are aware of the need to reduce the volume of packaging that later turns into waste, but producers still want to show their brand somewhere on the packaging, even when foods such as bananas, carrots or beets are sold in unwrapped bunches. Now, a new food-grade adhesive tape has solved the problem.


Irplast’s new food-grade adhesive tape has been approved for direct contact with foods with peels after it has been proven to leave no harmful residues behind. An independent laboratory found that there is no contamination or organoleptic change to the food after having been wrapped using the adhesive tape.

As for branding, the manufacturer’s name can be printed directly onto the tape, eliminating the need for secondary packaging. The residue-free tape sticks to a variety of fruits and vegetables, but peels away cleanly. As a result, there is no need for clumsy straps or elastic bands. This new solution not only reduces waste as a result of discarded packaging, but will reduce packaging costs and improve efficiency.


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Henkel Develops Adhesives for 3D printing in Auto, B&C, Consumer Goods Industries

Posted By ASC, Thursday, August 11, 2016

With the rise of 3D printing in the construction, furniture and automotive industries, Henkel is one of the companies in the adhesives space acting as an enabler for the new technology by developing adhesives, sealants and coatings that will work with 3D printed components.
 
Among its achievements is the provision of hot melt adhesives for the façade of the “Europe Building” in Amsterdam.  The company is one of the partners of the Dutch design and architecture start-up DUS Architects. In close collaboration with Henkel, and additional partners, DUS initiated the internationally well-known project of the canal house in Amsterdam in 2014. With the help of a giant 3D printer (with an installation space of 2 x 2 x 3.5 meters) a house facade including the interior walls made up of 42 components is to be printed and constructed by 2017.

Furniture makers are also turning to 3D printing.  They have made chairs, stools and lamp shades using this technique with hot melt adhesives helping make this possible. UV curing adhesives from Henkel are already being used in 3D printed parts for the automotive industry. These parts are prototypes that are 3D printed for testing, and adhesives are speeding up the assembly process allowing engineers to get results quickly and refine their designs.  If and when 3D printing is used for large-scale production of auto parts, adhesives will play an even more important role, and the company says it is preparing for this eventuality.



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Biomimicry Surgical Adhesive Inspired by Mussels May Make Fetal Surgery Safer

Posted By ASC, Wednesday, August 10, 2016

When a developing fetus needs surgery, one of the biggest risks surgeons need to overcome is rupture of the membrane that protects the amniotic sac. The membrane does not heal in the way other tissues heal, and sutures do not work well. Now researchers at the University of California are testing an adhesive that mimics the proteins that the common mussel uses to stick to rocks as a possible solution to the problem.

 

The adhesive mussels produce works in wet environments, making it perfect for surgical applications. The ‘foot’ of a mussel contains a “byssal” gland that secretes a combination of proteins that act as a water-proof adhesive. After the protein cocktail has been secreted, it quickly anchors onto the substrate, becomes tacky and then sets into a network of fine threads.

 

Surgeons will use a needle to create a space between the wall of the uterus and the fetal membrane, and the adhesive will be injected into this area, curing rapidly. Once this has occurred, surgeons will be able to breach the amniotic sac safely through the area that has been treated with the adhesive. Preliminary research findings have been published in the Journal “Mechanical Behavior of Biomedical Materials”.

 

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High Performance Buildings and Materials Developed Using Modern Chemistry

Posted By ASC, Tuesday, August 9, 2016

There’s a lot more to construction these days than old-fashioned brick and mortar. Scientifically developed materials with enhanced physical properties are changing the way buildings are constructed. We take a closer look at nine of these.

 

1. Energy-efficient roof coatings

Roof coatings that reflect heat are made from acrylics, silicones, styrene block copolymers and urethanes. They save energy costs by reducing air leaks and by reflecting heat, thus reducing both heating and cooling costs. In addition, they prolong the life of the roof itself by reducing thermal shock. The chemistry behind these coatings includes finding scientific ways to control film thickness and improve UV resistance.

 

2. Polyurethane is lightweight, a good insulating material, and is durable and versatile

One of the exciting projects in which polyurethane was used was the refurbishing of the Dawson Bridge in Edmonton, Canada. By creating a polyurethane core between steel bridge deck plates, the bridge was made lighter, stronger and more rigid.

 

3. Continuous insulation

By creating a blanket of insulation with no air-gaps, the energy efficiency of buildings can be improved by as much as 40%. Materials that help to make this possible include thermosets and thermoplastic foams. These materials can be sprayed on or be formed into insulating boards with seams that are taped or sealed to eliminate energy leakage.

 

4. Cross-linked polyethylene piping

Resistant yet flexible, cross-linked polyethylene piping can be bent in a variety of forms, making plumbing installations easier and much more versatile. The Minnesota Vikings’ stadium uses this piping to prevent snow from falling off its roof onto the playing field. Hot water circulated through the pipes helps to melt snow before it can build up.

 

5. New uses for vinyl

Durable luxury vinyl tile (LVT) looks as good as ceramic tiles, but is much warmer. It can even be installed without grout. Outdoor vinyl trim looks just like wood, but can’t be damaged by damp and decay. Vinyl materials can be flexible or rigid, allowing for greater design versatility and reduced waste.

 

6. Lightweight cement

When polystyrene beads are added to regular cement, it can be up to 100 times lighter, reducing transport costs, making it easier to pump up to high floors, and reducing building load without loss of durability and strength. This technique has been used in the construction of the new World Trade Center.

 

7. Nanotechnology

Nanotechnology is more widely used in construction than most people realize. It is used in corrosion-resistant coatings, helps to exclude heat and even microbes, and helps with the creation of lightweight materials. New “smart” windows can go from clear to opaque at the touch of a button thanks to nanotechnology. 1 nanometer long carbon micro tubes are incorporated into materials, allowing molecular level control. New research is currently exploring nanotubes that can allow windows and doors to move on their own without external motors.

 

8. Engineered wood

Even wood is stronger these days. By combining formaldehyde resins and adhesives with wood chips or wood layers, wood-based composites that are much stronger than regular wood can be made. Using these materials, spans of up to 100 ft (30m) long and walls up to 20ft (6m) high can be constructed from nothing but wood composites.

 

9. Structural silicone glazing

Beautiful glass-plated buildings are being made using structural silicone glazing that allows for larger spans and the use of bigger panes. Silicones are used to bond glass and metal to structures without using mechanical fasteners.

 

This is made possible by silicone’s ability to bond to materials like glass, stone or metal that would generally be hard to bond together. Silicone materials are specifically formulated to meet the requirements that make them suitable for use in a variety of construction applications. In glass, it improves wind-load resistance, supports a better dead load and accommodates thermal dilation.

 

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AAMA Releases Sealant Test Procedures and Specification Recommendations

Posted By ASC, Thursday, August 4, 2016

The American Architectural Manufacturers Association (AAMA) has announced the release of a new set of voluntary specifications and test methods for sealants, an updated version of its last guideline published in 2010. The documents have been divided into several categories, but all of them relate to sealants used in fenestration products. The chairperson of the AAMA 800 Maintenance Committee says that the updated documents offer an improvement on the previous version in that they are now not only updated, but arranged according to type of material, making them easier to use and simpler to update.

 

The new voluntary standards are divided into sections dealing with Back Bedding/Glazing Compounds, Back Bedding Mastic Type Glazing Tapes, Narrow Joint Seam Sealers, Exterior Perimeter Sealing Compounds, Non-Drying Sealants, and Expanded Cellular Glazing Tapes. All AAMA documents are available for purchase at the AAMA’s online store.

 

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Faster Assembly Lines, Lightweighting and Use of New Materials Made Possible by High-Strength Bonding Tapes

Posted By ASC, Wednesday, August 3, 2016

Manufacturers are constantly seeking, finding and making use of new methods and materials to achieve greater efficiency, cut manufacturing costs, improve product performance and cut shipping costs. High-strength bonding tapes are making it possible for them to achieve their goals as they make use of new materials. The construction industry, for example, is using aluminum composite panels these days, while the auto industry increasingly uses fiber-reinforced polymers.

 

Classic bonding techniques using fasteners aren’t suitable for current materials and applications, add weight, and require extra manufacturing processes that increase opportunities for error. Holes for mechanical fasteners weaken materials, different metals corrode when they come into contact with one another, and overall visual appeal can be affected.

 

High-strength bonding tapes are among the adhesives based products that are solving these problems. They bond instantly without the need for curing, are able to deal with differing expansion coefficients between materials, absorb shock, produce stronger bonds by distributing stress along the length of bonds and allow for greater design flexibility.

 

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Adhesive History Lesson: Who Invented the First Adhesive Bandage?

Posted By ASC, Thursday, July 28, 2016

We’re quick to apply an adhesive bandage to minor wounds, but have you ever wondered who invented these handy little medical devices? Before 1920, the only way to dress a minor wound was with a bulky gauze bandage secured with tape, and that made for a bulky bandage that restricted movement.  A cotton buyer for Johnson & Johnson and his accident-prone wife were about to change that forever!

 

Josephine Dickson regularly sustained minor cuts and burns while doing housework. To help her, her husband, Earle Dickson, made some ready-to-use bandages by spacing squares of gauze covered with crinoline fabric on a strip of adhesive tape. He told his boss about his clever little plan, and by 1924, Johnson & Johnson introduced the Band-Aid® Brand Adhesive Bandage.  Dickson’s innovativeness didn’t go unrewarded; he became Vice President of the company and remained in this position until he retired.


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New Line of Adhesives Developed for Pipeline Coating

Posted By ASC, Wednesday, July 27, 2016

KalenbornAbresist Corporation has announced the introduction of a range of specialized adhesives to be used for pipeline coating. These include pressure transfer fillers for the repair of high pressure pipelines. The adhesives, KALFIX 911 and KALFIX 913, will allow for ultra-strong adhesion even when used underwater. KALFIX 563 displaces water and creates permanent bonds between all substrates with little substrate preparation required. It will be used as a pipeline coating and for cold weather applications. KALFIX 206, a liquid epoxy resin combined with a high temperature curing agent, will cure hard and free of dust under normal temperatures thanks to its heat distortion properties.


The new range of coatings will complement the existing line of KALPOXY coatings currently offered by the company which also produces abrasion and wear resistant linings for bulk materials pipelines. The company says it aims to reduce downtime and maintenance requirements through its products.


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