Aluminum foil composite production line
DATE：2021/6/2 9:05:12 / READ： / SOURCE：This station
Aluminum foil composite production line
The types and characteristics of plasticizers for nylonThere are four kinds of cutting additives for nylon; Rubber elastomer, thermoplastic elastomer, rigid organic copolymer, inorganic rigid filler. But not all elastomers are suitable for nylon. Nylon is a kind of high quality material with polarity. In general, elastomers with polarity are more suitable for nylon. Of course, by graft copolymerization. It is also a feasible way to introduce polar groups in the macromolecular chain of non-polar elastomer. Aluminum foil composite production line www.handern.com
Rubber elastomer rubber elastomer is an ideal toughening agent for polymer. The main reason is that rubber has high toughness, especially low T, and excellent low temperature brittleness resistance of endosperm plastics. EPM, EPDM, NBR and SBR are used as toughening agents for nylon, SBS, SEBS, EVA and EAA are used as thermoplastic elastomers, and EPDM is used most. Rubber is used as an initiator of nylon. It is better to vulcanize it before use. Only when the rubber is moderately crosslinked and its linear structure changes into network structure, can it have excellent modification effect. Thermoplastic elastomer thermoplastic elastomer is different from rubber in that it can be used directly without vulcanization and crosslinking. Its elasticity is close to that of rubber, and its thermoplastic elastomer is copolymer or graft copolymer. SBS has high elasticity due to the existence of butylene field in macromolecule, and the elasticity of SBS varies with the content of butylene. SEBS is a hydrogenated product of SBS, which has stronger weatherability than SBS. There are some differences between thermoplastic elastomer toughened nylon and rubber toughened nylon in properties. The former has higher bending strength and other rigid properties than the latter. Aluminum foil composite production line www.handern.com
The research of rigid organic polymer particles is not as extensive and deep as that of elastomer. There are not many kinds of organic commercial molecules, such as liquid crystal polymers, which play a role in the toughening of nylon. However, in terms of the principle of toughening, polymers lower than nylon have a certain toughening effect on nylon, such as PP, PE, ABS, etc. The toughening effect of this kind of polymer is not as good as that of elastomer. When the size of inorganic filler particles reaches nanometer scale, it has a certain toughening effect, such as CaCO, occult powder, montmorillonite, wollastonite and so on. Rigid particles have a certain toughening effect on nylon, which can improve the brushing property of nylon, but not as significant as elastomer. In order to obtain toughened nylon with good toughness and high rigidity, it is necessary to use composite toughening agent or toughening reinforcing composite technology. Aluminum foil composite production line www.handern.com
The secondary properties of nylon and the application of reactive compatibilization technology to control the body, or to make the elastomer functionalized silver as an effective way, are introduced in China, The reactive compatibilization is that PA6 can be chemically reacted with polar groups in the nylon macromolecular chain, and the impact strength of PA6 can reach 160 /. (2) "shell core" copolymer toughening method "ceramic core" copolymer is a kind of paraloid EXL. Series developed by Rohm & has company in the United States. One of the outstanding characteristics of toughened nylon by "shell core" copolymerization is that the straight diameter of dispersed phase particles has been determined in the best range, and the toughening effect is remarkable due to less influence of processing conditions. It is a new way and development direction of nylon super toughening. Aluminum foil composite production line www.handern.com
Dynamic vulcanization technology the so-called dynamic vitrification refers to the "in-situ breaking" of rubber and hot-melt micro blending. In fact, the vulcanization process is the crosslinking process. As we all know, rubber processing must be vulcanized, so that the linear structure into a three-dimensional or network structure in order to have a certain strength and hardness. Ordinary vulcanized rubber relies on the crosslinking network formed during vulcanization to provide resilience, which is thermosetting; In the process of dynamic vulcanization, the rubber is vulcanized into crosslinked particles and dispersed in the carrier resin due to high-speed shear stress. The crosslinked rubber micro area mainly provides the elasticity of the blend, while the resin provides the plastic fluidity at the melting temperature. Dynamic vulcanization technology provides a new method for the preparation of thermoplastic elastomer blending thermoplastic elastomer. Blending thermoplastic elastomer blending thermoplastic elastomer is a new type of elastomer material, which is mainly composed of rubber and polyolefin through thermoplastic resin. Compared with polymerized thermoplastic elastomer, it has the following characteristics: 8) the preparation process is simple; b) According to different requirements, it can be arbitrarily combined, that is, different brands of products can be prepared by using different elastomers or resins and adjusting the component content: () the production cost is relatively low; d) Product performance is controllable The products are widely used as toughening agents for nylon and other plastics. It can also be directly injected and extruded. Aluminum foil composite production line www.handern.com
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