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Other crosslinking modification and plastic injection molding processing
by：CSSSLD
2021-01-23
Plastic salt crosslinking modification is also known as ionic crosslinking.
In the injection molding processing, it similar with silane crosslinking, the first in the macromolecular chain grafting reaction of functional groups.
Connect macromolecular chains to form crosslinking structure.
Salt crosslinking and other crosslinking, the crosslinking products at high temperatures can be thermoplastic, unlike other crosslinking products only with thermosetting.
plastic azide crosslinking modification in azide as crosslinking agent and crosslinking process. Azide crosslinked product faults for the heat resistance and weather resistance is poor, because using azide as crosslinking agent, crosslinking key heat is easy to fracture.
grafting agent concentration, when other things being equal, with the increase of grafting agent concentration, crosslinking degree increased. The initiator concentration, the initiator of the effects of silane crosslinking with grafting agent. Start with the increase of initiator concentration, gel rate increased rapidly, after reaching critical concentration, increased slowly.
crosslinking temperature, the temperature rise, silane crosslinking reaction of gel rate increases, but high temperature easy cause volatility. Antioxidants to join before grafting, affect the grafting effect. Catalyst concentration, similar with grafting agent and crosslinking degree increase with the increase of concentration of catalyst, but after reaching a certain value, the increase is not obvious.
plastic light crosslinking modification photosensitizer as initiator, under the action of light cause macromolecular chain to produce free radicals, thus forming process of cross-linked molecules. General with ultraviolet light triggered or laser, etc. In photoinitiating formula, in addition to join the photosensitizer, also add aid crosslinking agent and crosslinking accelerator, etc.
plastic surface modification is said by physical or chemical methods to make plastic products surface properties change of modification methods. Plastic surface modification and other modified there are two differences: one is the modified limited and the surface of the injection molding products processing, its internal performance does not change, the second is the modification of implementation in a plastic injection molding processing, belongs to secondary processing and modification.
the purpose of the plastic surface modification can be divided into two main categories: one is direct application of the modified, another kind is the indirect application of modified.
direct application of plastic surface modification is some modification, the application of can direct access to specific surface gloss, surface hardness, surface wear resistance and the frictional surface, surface aging proof, flame retardant, cut off the surface conduction and surface, plastic surface modification in recent years the development and application in this field soon.
the indirect application of plastic surface modification is said for direct application of ground modification, some of the specific, such as improvement of adhesion of plastic, such as printing and stratification and to improve the surface tension of plastic modification.
to measure the plastic surface adhesion, printing and stratification and so on, generally available surface tension and the lubrication Angle two performance. Lubrication Angle is smaller, the greater the surface tension, surface shows its strong degree, the higher the surface in combination with other materials.
more wonderful sharing: plastic peroxide crosslinking modification, click directly.
or copy the link: http://www. csssld。 cn//html/2016/Trade_0425/213。 HTML
nantong on plastic products factory's official website: http://www. csssld。 cn//
plastic azide crosslinking modification in azide as crosslinking agent and crosslinking process. Azide crosslinked product faults for the heat resistance and weather resistance is poor, because using azide as crosslinking agent, crosslinking key heat is easy to fracture.
grafting agent concentration, when other things being equal, with the increase of grafting agent concentration, crosslinking degree increased. The initiator concentration, the initiator of the effects of silane crosslinking with grafting agent. Start with the increase of initiator concentration, gel rate increased rapidly, after reaching critical concentration, increased slowly.
crosslinking temperature, the temperature rise, silane crosslinking reaction of gel rate increases, but high temperature easy cause volatility. Antioxidants to join before grafting, affect the grafting effect. Catalyst concentration, similar with grafting agent and crosslinking degree increase with the increase of concentration of catalyst, but after reaching a certain value, the increase is not obvious.
plastic light crosslinking modification photosensitizer as initiator, under the action of light cause macromolecular chain to produce free radicals, thus forming process of cross-linked molecules. General with ultraviolet light triggered or laser, etc. In photoinitiating formula, in addition to join the photosensitizer, also add aid crosslinking agent and crosslinking accelerator, etc.
plastic surface modification is said by physical or chemical methods to make plastic products surface properties change of modification methods. Plastic surface modification and other modified there are two differences: one is the modified limited and the surface of the injection molding products processing, its internal performance does not change, the second is the modification of implementation in a plastic injection molding processing, belongs to secondary processing and modification.
the purpose of the plastic surface modification can be divided into two main categories: one is direct application of the modified, another kind is the indirect application of modified.
direct application of plastic surface modification is some modification, the application of can direct access to specific surface gloss, surface hardness, surface wear resistance and the frictional surface, surface aging proof, flame retardant, cut off the surface conduction and surface, plastic surface modification in recent years the development and application in this field soon.
the indirect application of plastic surface modification is said for direct application of ground modification, some of the specific, such as improvement of adhesion of plastic, such as printing and stratification and to improve the surface tension of plastic modification.
to measure the plastic surface adhesion, printing and stratification and so on, generally available surface tension and the lubrication Angle two performance. Lubrication Angle is smaller, the greater the surface tension, surface shows its strong degree, the higher the surface in combination with other materials.
more wonderful sharing: plastic peroxide crosslinking modification, click directly.
or copy the link: http://www. csssld。 cn//html/2016/Trade_0425/213。 HTML
nantong on plastic products factory's official website: http://www. csssld。 cn//
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