News Details
Crosslinking agent applications
2017-2-23 17:50:08
Crosslinking agent applications, crosslinking is a generic technology, can undertake research as a research method, is used to improve the mechanical properties, solvent resistance and interface link, and used for curing liquid polymer or hardening of the polymer surface.
T. SEMBA (ANTEC 2005 p. 2423), such as by adding peroxide, improving the polylactic acid (PLA) after the PCLS alloying of brittle behavior. Low content of peroxide (0.1 to 0.2 PHR) with high elongation at break and less brittle behavior. The author thinks that two kinds of polymers were crosslinked structure viscosity raised their interface.
J.C. SANCHEZ - DIAZ (ANTEC) was synthesized with high swelling degree and improve the mechanical properties of the microstructure of polyacrylamide - - chitosan and polyacrylamide - altogether - hydrogel of chitosan/xanthan gum. Crosslinked polyacrylamide particles dispersed in the aqueous solution of acrylamide, the crosslinking agent and chitosan solution have occurred under the condition of polymerization, and has nothing to do with presence of xanthan gum chitosan solution. The water swelling capacity of the gel to be superior to the traditional acrylamide hydrogel.
Australia's Swinburne university of technology researchers Margaret spellings TRAUB and others made a tiny model, using the laser beam into the liquid silicone ether resin, crosslinking reaction, makes some curing materials. Computer program control, laser device can form complex microstructure, small to only one even half the thickness of the diameter of the hair.
U.S. patent 5130161 describes some polymer by ion beam bombardment surface hardening, if has the hardening effect element and makes the crosslinked polymer surface, these elements are Fe, B, Cr, V, Ti and S elements such as valence state of form.
The U.S. patent 4746725 described by cyclization polycarbonate oligomer and at least one epoxy compounds under the action of a catalyst, reaction, to form crosslinked network PC (polycarbonate).
U.S. patent 4073577 describes a hydroxyalkyl acrylate or methyl acrylate polymerization under without crosslinking agent was made hydrophilic polymer hydrogel contact lenses.
An independent macromolecular crosslinking to form more resilient and three-dimensional structure more reasonable, usually with sulfide and oxide in chemical reaction, but also can use other methods, such as used for polyurethane isocyanate, silane for polyethylene glycol, used for special elastomer resin or amine. Heating in general can speed up the reaction. In addition to these technologies, there are many special routes, some of which have been used in industrial production, other some rarely used or limited in the experimental stage.
Microwave, the electron beam, ultraviolet radiation, gamma rays, laser sintering has some specific industrial application, such as film, pipes, elastomer, coating, etc.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
Some study of the crosslinking of supramolecular is still at the stage, but is considered very promising. , there appeared, but also will have many applications for higher mechanical properties, solvent resistance, interfacial bonding, as well as the solidification of liquid polymer or hardening of the material surface, etc.
Polymer radiation decomposition resistance depends on the following general guidelines (and exceptions) :
Simple hydrogen atom structure, such as polyethylene - n - (CH2 - CH2), can also produce effective crosslinking and low fracture, and electron beam crosslinking polymer.
Aromatic ring is resistant to radiation, but other senses can be sensitive to radiation and harm of polymer to macromolecular radiation resistance. So, aromatic ring to replace a hydrogen atom into a polystyrene in polyethylene structure, thus improve the decomposition of resistance to radiation performance.
Instead, use two methyl groups of polyisobutylene replacement on the same carbon atom in the polyethylene of two hydrogen atoms, will be more sensitive to radiation effect. Four yuan to replace carbon atoms and branched chain against radiation.
Uv curing can get the following advantages:
Economic advantages: high yield, cost-effective, save energy;
Technical advantages: low temperature treatment, the new product performance, high speed;
Environment advantage: save energy.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
T. SEMBA (ANTEC 2005 p. 2423), such as by adding peroxide, improving the polylactic acid (PLA) after the PCLS alloying of brittle behavior. Low content of peroxide (0.1 to 0.2 PHR) with high elongation at break and less brittle behavior. The author thinks that two kinds of polymers were crosslinked structure viscosity raised their interface.
J.C. SANCHEZ - DIAZ (ANTEC) was synthesized with high swelling degree and improve the mechanical properties of the microstructure of polyacrylamide - - chitosan and polyacrylamide - altogether - hydrogel of chitosan/xanthan gum. Crosslinked polyacrylamide particles dispersed in the aqueous solution of acrylamide, the crosslinking agent and chitosan solution have occurred under the condition of polymerization, and has nothing to do with presence of xanthan gum chitosan solution. The water swelling capacity of the gel to be superior to the traditional acrylamide hydrogel.
Australia's Swinburne university of technology researchers Margaret spellings TRAUB and others made a tiny model, using the laser beam into the liquid silicone ether resin, crosslinking reaction, makes some curing materials. Computer program control, laser device can form complex microstructure, small to only one even half the thickness of the diameter of the hair.
U.S. patent 5130161 describes some polymer by ion beam bombardment surface hardening, if has the hardening effect element and makes the crosslinked polymer surface, these elements are Fe, B, Cr, V, Ti and S elements such as valence state of form.
The U.S. patent 4746725 described by cyclization polycarbonate oligomer and at least one epoxy compounds under the action of a catalyst, reaction, to form crosslinked network PC (polycarbonate).
U.S. patent 4073577 describes a hydroxyalkyl acrylate or methyl acrylate polymerization under without crosslinking agent was made hydrophilic polymer hydrogel contact lenses.
An independent macromolecular crosslinking to form more resilient and three-dimensional structure more reasonable, usually with sulfide and oxide in chemical reaction, but also can use other methods, such as used for polyurethane isocyanate, silane for polyethylene glycol, used for special elastomer resin or amine. Heating in general can speed up the reaction. In addition to these technologies, there are many special routes, some of which have been used in industrial production, other some rarely used or limited in the experimental stage.
Microwave, the electron beam, ultraviolet radiation, gamma rays, laser sintering has some specific industrial application, such as film, pipes, elastomer, coating, etc.
Chinese name: Diethyl toluene diamine(DETDA)
Diethyltoluenediamine Uses:
The product is identical to Ethancure 100 and Lonza DETDA 80, DETDA is very effective polyurethane elastomer chain extender; also be used as polyurethane and epoxy resin curing agent, epoxy resin of an antioxidant, industrial oils and lubricants . In addition, also as intermediates in organic synthesis.Especially for the RIM (reaction injection molding), is important in the field of spray polyurea chain extender species. Also can be used for casting polyurethane elastomer (CPU) and a curing agent, epoxy curing agent, epoxy resin of antioxidants, lubricants and industrial oils other antioxidants.
Some study of the crosslinking of supramolecular is still at the stage, but is considered very promising. , there appeared, but also will have many applications for higher mechanical properties, solvent resistance, interfacial bonding, as well as the solidification of liquid polymer or hardening of the material surface, etc.
Polymer radiation decomposition resistance depends on the following general guidelines (and exceptions) :
Simple hydrogen atom structure, such as polyethylene - n - (CH2 - CH2), can also produce effective crosslinking and low fracture, and electron beam crosslinking polymer.
Aromatic ring is resistant to radiation, but other senses can be sensitive to radiation and harm of polymer to macromolecular radiation resistance. So, aromatic ring to replace a hydrogen atom into a polystyrene in polyethylene structure, thus improve the decomposition of resistance to radiation performance.
Instead, use two methyl groups of polyisobutylene replacement on the same carbon atom in the polyethylene of two hydrogen atoms, will be more sensitive to radiation effect. Four yuan to replace carbon atoms and branched chain against radiation.
Uv curing can get the following advantages:
Economic advantages: high yield, cost-effective, save energy;
Technical advantages: low temperature treatment, the new product performance, high speed;
Environment advantage: save energy.
Copyright: Zhang Jia Gang YaRui Chemical co.,Ltd
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