Temat: kleje - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Podział klejów rozpuszczalnych w wodzie ze względu na pochodzenie
Classification of water-soluble adhesives according to origin
Autorzy:: Mozelewska, K.
Czech, Z.
Tematy:: kleje samoprzylepne
kleje naturalne
kleje syntetyczne
kleje rozpuszczalne w wodzie
pressure-sensitive adhesives
natural adhesives
synthetic adhesives
water-soluble adhesives; Pokaż więcej
Wydawca:: Polskie Towarzystwo Chemiczne
Powiązania:: https://bibliotekanauki.pl/articles/171549.pdf Link otwiera się w nowym oknie
Opis:: Self-adhesive adhesives have been known since 1935. Since then, many categories of their division have been distinguished, depending on their origin, state of aggregation, operating conditions, obtaining, chemical base or binding mechanism, as well as many other properties. The main is their application in natural and synthetic adhesives, that is due to the origin of the high molecular weight compounds used for their production. The following work describes the types of water-soluble natural and synthetic adhesives. In recent centuries, there has been a decline in the use of natural polymers for the synthesis of water-soluble pressure sensitive adhesives. This is due to the spread of cheaper products from petrochemical resources, but also better properties that they characterize. For their polymerization, synthetic monomers which hydrophilic groups (hydroxyl, amide or carboxyl) are used. These groups, in the further reaction stage, after polymerisation, give the possibility of cross-linking of the pressure-sensitive adhesive. Polyacrylate based adhesives are among the most commonly used adhesives. It is forecasted that the demand for such adhesives will increase on average by 2.9% per annum. Dispersive, water-soluble, self-adhesive adhesives and those in which the solvent is water also play an increasingly important role. This happens as a result of legal requirements, but also greater public awareness of ecology.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Fotoreaktwne poliakrylanowe kleje samoprzylepne
Photoreactive acrylics pressure-sensitive adhesives
Autorzy:: Kowalska, J.
Czech, Z.
Tematy:: kleje samoprzylepne
kleje fotoreaktywne
sieciowanie
pressure-sensitive adhesives
photoreactive adhesives
crosslinking; Pokaż więcej
Wydawca:: Polskie Towarzystwo Chemiczne
Powiązania:: https://bibliotekanauki.pl/articles/171714.pdf Link otwiera się w nowym oknie
Opis:: Pressure-sensitive adhesives (PSAs) are non-metallic materials used to bond other materials, mainly on their surfaces through adhesion and cohesion. Adhesion and cohesion are phenomena, which may be described thermodynamically and chemically, but actually they cannot be measured precisely. It was shown that the most important bonding processes are bonding by adhesion and bonding with pressure- -sensitive adhesives. The difference between pressure-sensitive adhesives and other adhesives, such as contact adhesives, is in the permanent surface stickiness of the pressure-sensitive adhesives before, or after, the application. The fastest developing polymers departments are: initiating UV photopolymerization and photocrosslinking. Ultraviolet radiation (UV) part of the electromagnetic radiation having a wavelength of 100 to 400 nm, the practical use has an area of 200 to 400 nm. UV radiation does not cause visual impressions results in a strongly fluorescence, photoelectric, photochemical reactions and has a high biological activity. It is particularly important industrial use of UV crosslinking which is used in the manufacture of a wide range of self-adhesives, such as assembly lines, labels, decorative films, protective films, patches and biomedical electrode. Especially important critical point during UV-curing is the balance between adhesion and cohesion of the crosslinked pressure-sensitive adhesive layer. An important element is finding the appropriate beneficial relationship between tack, adhesion and cohesion of the crosslinked pressure-sensitive adhesives that offer assurance to their respective industrial applications. Ultraviolet radiation crosslinking is carried out at room temperature and does not require high temperatures, an important disadvantage pressure-sensitive adhesives crosslinked by heat. Compared to systems crosslinked thermally, the use of UV crosslinking process provides greater speed and effective a crosslinking process, and also does not damage the materials with low thermal resistance.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 3.

Tytuł:: Przewodzące samoprzylepne kleje akrylanowe z napełniaczami węglowymi
Conductive acrylic pressure-sensitive adhesives with carbon filler
Autorzy:: Antosik, A. K.
Czech, Z.
Tematy:: kleje samoprzylepne
przewodzące kleje samoprzylepne
polimery
samoprzylepne kleje akrylanowe
adhesives
conductive pressure-sensitive adhesives
polymer
acrylic pressure-sensitive adhesives; Pokaż więcej
Wydawca:: Polskie Towarzystwo Chemiczne
Powiązania:: https://bibliotekanauki.pl/articles/172375.pdf Link otwiera się w nowym oknie
Opis:: Pressure-sensitive adhesives (PSA) are a group of adhesive-based macromolecular polymers which are characterized by good (satisfying the requirements of industrial) adhesion and cohesion; high temperature stability during use, excellent aging resistance and constant tear strength. In 1935, the concept of self-adhesive glue, wherein the obtained self-adhesive product of the invention R. Stanton Avery, was firstly developed. From many types of adhesives, the most common adhesives are acrylics pressure-sensitive adhesives [1–3]. In most cases, self-adhesive adhesives do not exhibit good conductive properties, whereas conductivity grades are classified in the group of insulators. In order to improve their conductive properties, studies have been conducted on the modification of polymers in adhesive compositions, where at least one of the components exhibited conductive properties (e.g. polymers with conjugated π-bonded polymers along polymeric chains). However, the best effects were obtained by adding conductive fillers such as metal (copper, aluminum), specially modified soot, nanotubes or graphene, carbon fibers, metallized glass and conductive fibers. This allowed the creation of electrically conductive compositions characterizing by conductivity in the range from 10^–2 to 10² S/cm. This relatively high conductivity is the result of the percolation of conductive filler molecules into an insulating matrix or tunneling between electrically conductive molecules [10, 11]. Acrylate pressure-sensitive adhesives with conductive fillers have found a number of important industrial applications, especially in the electronics industry. Pressure- sensitive adhesives, such as self-adhesive tapes or adhesive films, are used as heating elements, sensors or conductive gums. Due to their good performance, they can be used to connect solar panels or glue small components in the microelectronics industry. They also can be used to discharge static charges from the surface – used as flexible drainage connections – especially in places where the spark is undesirable and can be dangerous. They are used as heating elements [10, 12, 27].
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 4.

Tytuł:: Matematyczny opis technologii podczyszczania ścieków zawierających kleje organiczne
Mathematical description of wastewater containing glue treatment technology
Autorzy:: Juraszka, B.
Piecuch, T.
Tematy:: oczyszczanie ścieków
kleje organiczne; Pokaż więcej
Wydawca:: Politechnika Koszalińska. Wydawnictwo Uczelniane
Powiązania:: https://bibliotekanauki.pl/articles/1826076.pdf Link otwiera się w nowym oknie
Opis:: More and more industrial plants aims to use simple and the most economic system of water usage, so called "closed system". Working of this system consists in second utilization of once already used water and only small quantities are added to water once taken. Such solutions are very profitable for the whole ecosystem, because they do not violate the supplies of water and do not pollute with their wastes. Since 2001 the Division of Water-Sludge Technology and Waste Utilization of Koszalin University of Technology tied co-operation with DREWEXiM Plant which produces windows and doors and other wooden elements situated in Nowe Bielice near Koszalin in order to work out technology of Wastewater from this plant treatment. Wastewater - the object of investigations come into being during rinsing of glue installations and first of all rollers transferring glue onto wooden elements. On the basis of many identification investigations technological arrangement of wastewater pre-treatment presented in fig. 1. was proposed. The paper presents results of mathematical analysis of laboratory research results on wastewater from glue processing treatment technology which includes following unit processes: coagulation and sedimentation, filtration, sorption and centrifugal sedimentation. Each node of technology presented in figure 1 was researched in laboratory scale. Results of this research were mathematically analyzed using central point method, developed by Prof. Tadeusz Piecuch. After analysis set of mathematical equations describing influence of tested independent parameters on resulting parameters was gained, presented in chapter 5 of this paper. After establishing final analytical - empirical mathematical equations several random experiments were executed at randomly selected values of individual xi variables within studied ranges of changes, on purpose selected in such way so that these values do not mate with central point of approximation, but only with space around this point, and so with the space in which it is assumed that received equations may be applied and compare them with calculations made on the basis of earlier received equations. Differences between values got during laboratory investigations and on the basis of formulae are small and are from several to a dozen or so percent. Accuracy of equations was estimated with the t-studenta test. For n - 1 = 6 degrees of freedom and at significance level alfa = 0,05 from tables of the t-student distribution the value border t alfa was read: t0, 05 = 2,447. Comparing reached values of individual test functions t with value border t0, 05. one can see that all these values are smaller than the border value. So it can be affirmed that equations are received after individual processes sufficiently accurate at 95% of trust, and the results received on the basis of equations are compatible (in approximation) with results received in laboratory conditions. Analysis of differences between test results and mathematical results allows to state that presented mathematical analytical and empirical description of wastewater containing glue treatment technology is precise enough after transferring it from laboratory scale. Therefore it is possible to describe mathematically processes used in this installation, and what follows, it is possible to simulate these processes and predict results of their work. This mathematical analytical and empirical description may be extended by introduction of new parameters (chemical reagents, flocculants or sorbents) broadening its usage range, as well as prediction of results in other treatment installations of similar wastewater in similar plants.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 5.

Tytuł:: Types of adhesives used in the printing industry
Rodzaje klejów wykorzystywanych w poligrafii
Autorzy:: Polkowski, M.
Tematy:: adhesives
printing industry
kleje
poligrafia; Pokaż więcej
Wydawca:: Centralny Ośrodek Badawczo-Rozwojowy Przemysłu Poligraficznego
Powiązania:: https://bibliotekanauki.pl/articles/128506.pdf Link otwiera się w nowym oknie
Opis:: Istnieje wiele rodzajów klejów stosowanych w poligrafii od klejów PUR, przed wodne dyspersje poli- oraz copolimerowe, aż po kleje roślinne i zwierzęce. Wszystkie można podzielić na kategorie uwzględniając ich różne atrybuty takie jak: pochodzenie, stan skupienia, mechanizm spajania i inne. Co więcej, wymienione kategorie mogą być dalej dzielone na podkategorie. W artykule wymienione zostały kleje stosowane w poligrafii przy zastosowaniu najpopularniejszego podziału na kleje naturalne i kleje syntetyczne.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 6.

Tytuł:: Sieciowanie samoprzylepnych klejów silikonowych
Crosslinking of silicone pressure-sensitive adhesives
Autorzy:: Antosik, A. K.
Czech, Z.
Tematy:: kleje samoprzylepne
polimery
silikonowe kleje samoprzylepne
pressure-sensitive adhesives
polimer
silicone pressure sensitive adhesives; Pokaż więcej
Wydawca:: Polskie Towarzystwo Chemiczne
Powiązania:: https://bibliotekanauki.pl/articles/172358.pdf Link otwiera się w nowym oknie
Opis:: Pressure-sensitive adhesives (PSAs) represent a system that actually dates back to the invention of the self-adhesive articles in 1935 when R. Stanton Avery produced the first coating unit using a wooden cigar box with two holes cut in the bottom. PSAs can be defined as a special category of adhesive which in dry form are permanently tacky at room temperature [1–4]. Since 1960s, silicone pressure-sensitive adhesives have found many uses. They are used in industrial plants, as tapes for joining materials with low surface energy, as well as in the sectors of electrical and electronic, medical care, health care and automotive industry. For about 10 years there has been great interest in new uses for the silicone PSA, particularly for medical and industrial belts. The above examples describe a growing range of potential commercial applications of silicone pressure- -sensitive adhesives. Silicone pressure-sensitive adhesives typically consist of large segments of the silane-functional silicone polymers and silicone resins (MQ). It is well known that silicone pressure-sensitive adhesives because of their unique properties are special-purpose products. The combination of the properties of silicones such as high flexibility of connections Si-O-Si, low intermolecular interaction, low surface tension, excellent thermal stability and transparency for UV radiation, excellent electrical properties, high chemical resistance and weather resistance makes silicone adhesives have improved properties compared to other typical polymeric organic adhesives. Due to the low surface tension of silicone adhesives, adhesive is easily spread on the surface of various materials [4–9]. The properties of silicone pressure sensitive adhesives (Si-PSA) crosslinking thermally by organic peroxides (according to a radical mechanism) depend on the type and concentration of crosslinker used. Benzoyl peroxide (BPO) and 2,4-dichlorobenzoyl peroxide (DClBPO) are the most commonly used peroxides the industry. Increasing the content of BPO or DClBPO in a predominantly affects significantly increase the cohesion, while reducing the adhesion of tested adhesives [1, 5, 6]. With the market testing of pressure sensitive adhesives and literature studies clearly show that there were no studies to date on the process of UV-curing silicone pressure sensitive adhesives; and there is no sales sided adhesive tapes, silicone crosslinked by UV radiation.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Hybrydowe elementy obwodu magnetycznego wytwarzane metodą klejenia
Hybrid magnetic circuit elements produced by bonding
Autorzy:: Kapelski, D.
Jankowski, B.
Karbowiak, M.
Przybylski, M.
Maciejewski, P.
Ślusarek, B.
Tematy:: metalurgia proszków
kleje
dielektromagnetyki
dielektromagnesy; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/1807526.pdf Link otwiera się w nowym oknie
Opis:: The development of new technologies and materials, gives designers of electric motors more new options. Application of soft magnetic composite powder and permanent bonded magnets allows to construct motor impossible to made of electrical sheet. Powder metallurgy enables the production of components with a layer structure - called a hybrid. Such elements are composed of layers with different physical properties. Restriction hybrid technology is the shape of the elements and the curing temperature of the materials used. Therefore, in some applications, it is inevitable the use of bonding. The main objective of the study is to compare the mechanical properties of double layer elements, different types of adhesives bonded and components made in one pressing process.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 8.

Tytuł:: Synthesis of photoreactive solvent-free acrylic pressure-sensitive adhesives in the recovered system
Autorzy:: Milker, R.
Czech, Z.
Wesołowska, M.
Tematy:: polimeryzacja
fotoinicjator nienasycony
rozpuszczalnik organiczny
poliakrylanowe kleje samoprzylepne
kleje poliakrylanowe
kleje samoprzylepne
oddestylowanie rozpuszczalnika
polymerization
unsaturated photoinitiator
organic solvent
acrylic PSA
devolatilizing of solvent; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/779928.pdf Link otwiera się w nowym oknie
Opis:: The present paper discloses a novel photoreactive solvent-free acrylic pressure-sensitive adhesive (PSA) systems, especially suitable for the so much adhesive film applications as the double-sided, single-sided or carrier-free technical tapes, self-adhesive labels, protective films, marking and sign films and wide range of medical products. The novel photoreactive solvent-free pressure-sensitive adhesives contain no volatile organic compounds (residue monomers or organic solvent) and comply with the environment and legislation. The synthesis of this new type of acrylic PSA is conducted in common practice by solvent polymerisation. After the organic solvent are removed, there remains a non-volatile, solvent-free highly viscous material, which can be processed on a hot-melt coating machine at the temperatures of about 100 to 140°C.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Wpływ napełniaczy krzemowych na właściwości samoprzylepnych klejów silikonowych
Influence of silicone fillers on silicone pressure-sensitive adhesives properties
Autorzy:: Antosik, A. K.
Czech, Z.
Tematy:: kleje samoprzylepne
kaolin
montmorylonit
silikonowe kleje samoprzylepne
pressure-sensitive adhesives
montmorilonite
silicone pressure-sensitive adhesives; Pokaż więcej
Wydawca:: Polskie Towarzystwo Chemiczne
Powiązania:: https://bibliotekanauki.pl/articles/172170.pdf Link otwiera się w nowym oknie
Opis:: Pressure-sensitive adhesives (PSAs) represent a system that actually dates back to the invention of the self-adhesive articles in 1935 when R. Stanton Avery produced the first coating unit using a wooden cigar box with two holes cut in the bottom. PSAs can be defined as a special category of adhesive which in dry form are permanently tacky at room temperature [2, 6–8]. Since 1960s, silicone pressure-sensitive adhesives have found many uses. They are used in industrial plants, as tapes for joining materials with low surface energy, as well as in the sectors of electrical and electronic, medical care, health care and automotive industry. For about 10 years there has been great interest in new uses for the silicone PSA, particularly for medical and industrial belts. The above examples describe a growing range of potential commercial applications of silicone pressure-sensitive adhesives [2, 7, 9–11]. In contrast to the pressure-sensitive adhesives organic silicone pressure-sensitive adhesives show much better performance by this well known it happened that are used to obtain self-adhesive materials for special purposes. Si-PSA usually consist of large segments of the silanol-functional silicone polymers, and silicone resins. Polymeric chains comprising the silicone resins include methyl and phenyl groups thus are very little reactive chemicals. In order to obtain the best adhesion-cohesion balance are used crosslinked thermally in a temperature range of 120–150°C by using organic peroxides. Peroxides most commonly used in industry benzoyl peroxide (BPO) and 2,4-dichlorobenzoyl peroxide (DClBPO). Silicone pressure- -sensitive adhesives are characterized by high flexibility of connections Si-O-Si, low impact intermolecular, low surface tension, excellent thermal stability and transparency for UV radiation, excellent electrical properties, high chemical resistance and weather resistance [2, 6, 7, 14]. In the available literature the montmorillonite and kaolin modified silicone pressure-sensitive adhesives which exhibited increased thermal resistance are reported. The thermal properties of adhesives compositions are better to compared with “pure” silicon composition without any filler [6, 12–14].
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 10.

Tytuł:: Development of photoreactive UV-crosslinkable solvent-free acrylic pressure-sensitive adhesives coated at room temperature and used for removable and repositionable self-adhesive materials
Autorzy:: Czech, Z.
Butwin, A.
Tematy:: fotoreaktywny samoprzylepny klej akrylanowy
kleje fotoreaktywne
kleje samoprzylepne
kleje bezrozpuszczalnikowe
sieciowanie UV
photoreactive pressure-sensitive adhesives
UV-crosslinkable adhesives
solvent free acrylic adhesives
acrylic adhesives; Pokaż więcej
Wydawca:: Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
Powiązania:: https://bibliotekanauki.pl/articles/779293.pdf Link otwiera się w nowym oknie
Opis:: The goal of this article is to review the development of photoreactive UV-crosslinkable acrylic pressure-sensitive adhesives (PSAs) characterized by low viscosity, which can be coated at room temperature in the form of adhesive layers and are characterized by removable properties after UV-crosslinking. Surfactants and stearic acid have been used to improve the performance of the acrylic PSA, too. They are used for the manufacturing of removable and repositionable self-adhesive products, such as easy peel-able decorative films and wide range version of post-it articles.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Informacja

Wyszukujesz frazę "kleje" wg kryterium: Temat