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Polymer Adhesive Enables Development of Life-Saving Insect Repellent

Posted By ASC, Monday, August 20, 2018

Mosquito-borne diseases like Yellow Fever and Malaria still kill thousands of people every year. The best way to combat these illnesses is to ensure that you don’t get bitten by a mosquito in the first place, but traditional insect-repellent products don’t offer enough protection to guarantee this. Now, researchers have come up with a long-lasting and highly-effective mosquito repellent that provides protection for up to 72 hours. 


The pesticide-free product doesn’t wash off, but because skin replaces itself, it will slough off with dead skin cells after a time. It uses natural ingredients like citronella, but the secret to its success lies in the polymer adhesive that makes it so long-lasting. 

 

The innovative product recently won a Harvard Business School competition that grants $80,000 in funding, and its inventors hope to fund distribution of the repellent in third world countries through sales made in the USA.  Commercial sales are expected to commence early in 2019.

 

 

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Henkel Invests in 3-D Printing Additives Research

Posted By ASC, Wednesday, August 15, 2018
Updated: Tuesday, August 14, 2018

Henkel is investing €18m in a new R&D facility in Dublin, Ireland, where its researchers will focus on the development and demonstration of new materials for use in 3-D printing. The facility where they will work consists of laboratories as well as customer-service offices, 3-D printing facilities, and conference facilities. Further expansion is planned during the next two years. The initiative enjoys the support of Ireland’s government and consists of a four-year investment plan that will expand Henkel’s capacity for the development of new adhesive technologies.


The company cites existing on-site expertise and the existing 3-D printing industry in Ireland as the reason for its choice of location which it hopes will serve as hub for 3-D printing advances throughout Europe.


An innovation and interaction center forms part of the complex and will serve as an information, service, and training center for clients from various sectors including the MedTech, manufacturing, and automotive industries. Henkel expects additive manufacturing to be of “crucial importance,” and believes that its center in Ireland will further enhance its reputation for the development of novel technologies.

 

 

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New Adhesive for Temperature-Resistant Thermoplastics

Posted By ASC, Tuesday, August 14, 2018

Panacol has announced the release of Vitralit UV 4082, a light-curing adhesive that is specifically designed for bonding thermoplastics that resist high temperatures to materials that would previously not have been compatible with the plastics. These include PEEK, PEN, and TPU which have previously presented a challenge for the adhesives industry. Apart from working well with these plastics, Vitralit UV 4082 will also form strong bonds whenmanufacturers choose to use glass or ceramic substrates. 


The manufacturers say that the adhesive has been exposed to temperatures of 150°C for up to seven days in tests, yet retained its flexibility, making it suitable for use with materials that may bend and flex. To cure the adhesive, manufacturers expose it to light from gas discharge lamps or LEDs, and the inspection of the bond is made possible by it fluorescence under black light.

 

 

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Adhesives.org BLOG: Adhesive Uses Expanding in Automotive OEM

Posted By ASC, Friday, August 10, 2018
Updated: Wednesday, August 8, 2018

Adhesives.org Blog: Adhesive Uses Expanding in Automotive OEM

by Dan Murad, The ChemQuest Group

 

 

Historically, mechanical fastening and welding were predominate joining methods used in component and automotive assembly.  By the 1980’s, adhesives began making inroads due to the advent of lighter and thinner-gauge substrates, which led to mixed-metal joining, unibody and cab forward designs, and plastic- and ABS-components.  The bonding challenges of lightweighting imposed on OEMs, driven by the increasing pressures of CAFÉ standards, was the driver for adhesive formulators to meet the demand for specific properties in their formulations.

In the last 10 years, OEMs have taken a process-oriented approach when adopting new adhesive technologies. The in-plant directive to “do it right” was commonly heard in automotive OEM piloted adhesive implementations because if the bonding specification did not work, there would be no further opportunity to use, much less optimize, adhesive products.

Fortunately, success was achieved through cooperation and collaboration among engineering, production and purchasing.  Processes were added or changed to allow for designs optimized for adhesive bonding with fewer mechanical fasteners.  Likewise, documenting process parameters became a standard practice, and optimizing curing profiles enhanced adhesive durability.

Today, industry standards for off-line component assembly or on-line body-in-white (BIW) assembly routinely use adhesives not only for joining purposes, but also to improve rigidity, fit and finish, to meet noise vibration harshness (NVH) standards, and to enhance cosmetic appearance. Adhesives are an established protocol of the automotive industry’s 3 to 5-year pre-qualification, qualification, selection, Production Part Approval Process (PPAP) testing and final validation processes.  Consequently, adhesive applications have...

 

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Bostik Completes the Acquisition of the Industrial Adhesives of Nitta Gelatin

Posted By ASC, Thursday, August 9, 2018
Updated: Wednesday, August 8, 2018

Bostik completed the acquisition of the industrial adhesives of Nitta Gelatin Inc. by the Bostik-Nitta joint-venture in Japan, on 1st August 2018.

This acquisition, which will be complemented by the construction of a new adhesives plant in Japan, will help Bostik to step up its development particularly in the fast-growing nonwoven markets for hygiene applications and in the packaging, labelling, transportation and electronics industrial markets.

 

Arkema reports it is thus actively pursuing its strategy to develop its adhesives, which represent one of the major drivers of its long-term growth.

 

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Research Highlight: Microhooks Allow Adhesive to Form Bonds in Wet Environments

Posted By ASC, Tuesday, August 7, 2018

Ulsan National Institute of Science and Technology (UNIST)Professor Hoon-EuiJeong believes that he has found the formula for an adhesive that will be even better than the substances that allow shellfish to stick to rocks. He says that his adhesive doesn’t require any chemical surface preparation and can be removed easily if it dries out.


ProfessorJeong attributes these properties to the mushroom-like microhooks that are responsible for bond formation. The hydrogel formulation chosen by the research team forms these microscopic structures. When the environment is wet, the microhooks expand and interlock, forming a strong bond. In dry environments, they will shrink, weakening the bond. The degree to which they swell can be controlled by choosing hydrogels with different molecular weights.


The research team believes that its discovery could be useful in the formulation of future biomedical adhesives and for the repair of underwater equipment.

 

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3M Launches New Low VOC Window Bonding Adhesive Sealant

Posted By ASC, Monday, August 6, 2018

3M says that its new Window Bonder Adhesive Sealant 595 is designed to meet increasingly stringent requirements for environmental safety while meeting the operational needs of its clients. The company says its adhesive features high green strength, cures quickly and is the first in its category to be classifiable as a low-VOC product. 


According to 3M, the new product meets Southern California Air Quality Management District requirements and will improve workplace safety by reducing employee exposure to solvents. It expects the adhesive to prove useful in the manufacture of large vehicles and agricultural equipment and says that manufacturers will not need to provide as much support for windows while the sealant cures. The curing process itself is said to be faster with the company citing a minimum drive away time of one hour.

 

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Roofing Industry: W. Michigan U. Needs Your Help with a Research Program

Posted By ASC, Friday, August 3, 2018

Roofing Systems Research Program Announced by Georgeau Construction Research Institute

 

Attention adhesive manufacturers in the roofing materials market, roofing manufacturers, contractors, and consultants…


The Adhesive & Sealant Council has been asked to get the word out for Western Michigan University’s Georgeau Construction Research Institute to help with an important research program in roofing systems.


As a stakeholder in the roofing industry please consider participating in a survey to help WMU develop a research program to evaluate various roof systems and materials or mechanisms for improving structural load path integrity and resilience under damaging wind loads.

 

The survey is available online HERE


For more information please contact: Upul Attanayake or Kanchani Basnayake Mudiyanselage, Dept. of Civil and Construction Engineering at W. Michigan U. HERE

 

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Research Group Develops New Light-Curing Epoxy That Also Works Underwater (Video)

Posted By ASC, Thursday, August 2, 2018

Researchers at the Vienna University of Technology have demonstrated and patented their newly-developed epoxy resin formula. The team says its innovation can be used in the aerospace, shipbuilding and auto industries as well as for underwater repairs to underwater structures. The material is transparent when applied, but after exposure to UV or visible light, it solidifies and darkens. The process takes seconds.


Apart from being able to work underwater, the formula works well with carbon-fiber and carbon-fiber mats. Since carbon fiber is playing a pivotal role in lightweighting initiatives, car-makers and the aerospace industry will provide potential target markets for the new epoxy. In addition, the epoxy can be used to insulate electrical components as well s working as a bonding agent.


Professor Robert Liska, lead researcher, explains that the secret behind the formulation lies in additives that can be tailored to respond to different types of light. It’s also not necessary to expose all the material to light. If any part of it is exposed to light, the ensuing chemical reaction ensures curing throughout – even in places where light cannot penetrate.

 

WATCH THE VIDEO

 

 

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Wood Pulp Component Holds Promise as New “Designer” Adhesive Ingredient

Posted By ASC, Tuesday, July 31, 2018

Adhesive chemistry has, up till now, been heavily reliant on petroleum-derived chemicals, but a team of researches says they may have found a renewable resource that could become an alternative. 

 

The team from the University of Delaware has published a paper in ACS Central Science on the use of lignin, a substance from wood pulp that is discarded by pulp and paper manufacturers. Lignin is a natural polymer and shares many properties similar to those of the petroleum-derived polymers commonly in use in the adhesives industry.


First, the team had to find a way to break down the lignin into useful components. However, they found a common catalyst that allowed them to develop a low-temperature process that would perform the necessary depolymerization. These components were then used to formulate new materials that could be used in pressure-sensitive adhesives. The team says that its materials are not only “greener,” but also have comparable, or even better properties than traditional ones.


The team now wants to investigate results from different sources of lignin, including grasses. The theory is that they should be able to reverse-engineer the materials to have different levels of tackiness, making them suitable for different kinds of pressure-sensitive adhesive tape. However, this is no purely academic exercise. Recognizing the potential commercial significance of its discovery, the research team has filed for a provisional patent on its discovery.

 

 

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