Synthetic device for uniaxially stretched film-grade pet polyester chips and a synthetic method using the device
A polyester chip and synthesis device technology, applied in the polymer field, can solve the problems of uneven flat yarn, insufficient strength, poor toughness, etc., and achieve the effects of being beneficial to traction and stretching, increasing flexibility, and improving breaking strength
Active Publication Date: 2016-07-20
浙江凯普奇新材料科技有限公司
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Problems solved by technology
However, there are few reports on the application of PET materials in the plastic woven industry.
[0003] Due to the high strength and strong rigidity of PET, there are problems such as brittleness, poor toughness, easy breakage, unevenness and insufficient strength in the process of stretching and drawing PET filaments. PET materials have not been used at home and abroad to produce The method of weaving flat yarn into bags
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[0026] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0027] Such as figure 1 As shown, the synthesis device of high tensile strength film-grade PET polyester chips in this embodiment includes an esterification reactor 1, a pre-condensation reactor 2 and a final polycondensation reactor 3 connected in sequence, a first preparation mechanism, and a second preparation mechanism And the ethylene glycol vapor spray vacuum system, the first preparation mechanism has the first ethylene glycol feed port and the third monomer feed port, the second preparation mechanism has the second ethylene glycol feed port and the catalyst feed port, Ethylene glycol vapor spraying vacuum system is respectively connected with the pre-condensation reactor 2 and the final polycondensation reactor 3; there is a delivery pump 95 between the discharge end of the pre-condensation reactor 2 and the feed end of the final polyc...
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Abstract
The invention relates to a device for synthesizing a uniaxially stretching film-grade PET polyester chip. The device comprises an esterification reactor, a pre-polycondensation kettle and a final-polycondensation kettle which are sequentially connected. The device is characterized by further comprising a first preparation mechanism, a second preparation mechanism and an ethylene glycol steam injection vacuum system, wherein a first ethylene glycol material inlet and a third monomer material inlet are formed in the first preparation mechanism, a second ethylene glycol material inlet and an additive material inlet are formed in the second preparation mechanism and the ethylene glycol steam injection vacuum system is respectively connected with pre-polycondensation kettle and the final-polycondensation kettle. The invention also discloses a synthesis method of the PET polyester chip. Compared with the prior art, the device has the advantage that by adding the third monomer and optimizing the designs of the process device and the conditions, the crystallization property and flexibility of PET molecular are improved so that the fracture strength of the final product is significantly improved.
Description
technical field [0001] The invention relates to a synthesis device for PET polyester chips, and also discloses a synthesis method for PET polyester chips, which belongs to the technical field of macromolecules. Background technique [0002] At present, the plastic woven products produced, sold and used at home and abroad all use polypropylene resin (PP) or polyethylene (PE) as raw material to make flat yarn, and then weave packaging items. Polyethylene terephthalate (PET) polyester is widely used in daily life, such as plastic bottles, chemical fiber products, films, etc. The performance is better than PP and PE, so using PET to produce woven bags has obvious advantages over PP and PE. However, there are few reports on the application of PET materials in the plastic weaving industry. [0003] Due to the high strength and strong rigidity of PET, there are problems such as brittleness, poor toughness, easy breakage, unevenness and insufficient strength in the process of stre...
Claims
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IPC IPC(8): C08G63/672C08G63/78D01F6/84
Inventor 郑兵章延举邱增明肖海军徐慧芬
Owner 浙江凯普奇新材料科技有限公司