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Poly-2,5-furandicarboxylic acid glycol ester composite material and preparation method thereof

A technology of ethylene furandicarboxylate and polybutylene succinate, which is applied in the field of polyester and can solve problems such as brittleness of PEF

Active Publication Date: 2014-10-01
芜湖万隆新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Polyethylene 2,5-furandicarboxylate (PEF) is a polyester based on renewable resources 2,5-furandicarboxylic acid and ethylene glycol. It has good thermal and mechanical properties, and its performance can be compared with that of Comparable to polyethylene terephthalate, it has the potential to replace PET, and also has the potential to develop into biomaterials, medical materials, etc., but PEF is brittle, which will limit its wide application

Method used

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  • Poly-2,5-furandicarboxylic acid glycol ester composite material and preparation method thereof
  • Poly-2,5-furandicarboxylic acid glycol ester composite material and preparation method thereof

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[0043] The present invention also provides a preparation method of the above-mentioned auxiliary agent, comprising: A) mixing a carrier, a silane coupling agent with an amino group at the end, and a second organic solvent, and reacting by heating to obtain surface-modified cellulose beads or cellulose Whiskers; B) Mix the surface-modified cellulose beads or cellulose whiskers, tetrachloroethane, diacid chloride with the second polyethylene 2,5-furandicarboxylate, after heating and reacting, add The second polymer, after continuing to react, obtains an auxiliary agent; the carrier is cellulose beads or cellulose whiskers; the second polymer is selected from polybutylene succinate, polycaprolactone and polycarbonate One or more of propylene esters.

[0044] Wherein, the cellulose beads, the cellulose whiskers, the silane coupling agent with amino groups at the end, the second polyethylene 2,5-furandicarboxylate and the second polymer are all the same as above, and are not mentio...

Embodiment 1

[0083] 1.1 In the reactor, add dry cellulose beads with a particle size of 20-100 μm, 3-aminopropyltriethoxysilane, oleic acid (20% of the mass of cellulose beads) and 200ml of toluene, 3-aminopropyl The mass of triethoxysilane is 20% of the mass of cellulose beads, and nitrogen gas is introduced as a protective gas. After stirring rapidly for 30 minutes, it is heated to 90°C, and the stirring reaction is continued for 420 minutes. The reaction product dispersion is evaporated by rotary evaporation, and the solid is washed and after filtration, the surface-modified cellulose beads were obtained.

[0084] 1.2 Add tetrachloroethane and excess diacid chloride to the reactor, heat to 40°C, add the tetrachloroethane dispersion of surface-modified cellulose beads obtained in 1.1 dropwise, react for 4 hours, and then drop The weight average molecular weight is 1×10 3 ~1×10 4 polyethylene 2,5-furandicarboxylate tetrachloroethane solution (the quality of polyethylene 2,5-furandicarbo...

Embodiment 2

[0088] 100 parts by weight of reduced viscosity is 0.98dL / g polyethylene 2,5-furandicarboxylate, 20 parts by weight of polybutylene succinate and the auxiliary compound obtained in embodiment 1 of 5 parts by weight The agent is mixed in a high-speed mixer for 10 to 15 minutes, and then added to a twin-screw extruder with a rotation speed of 100 rpm and an extrusion temperature of 220°C, fully plasticized, melted, extruded, drawn, and pelletized to obtain a polymer Ethylene glycol 2,5-furandicarboxylate composite.

[0089] The mechanical properties of the polyethylene 2,5-furandicarboxylate composite material obtained in Example 2 were tested, and the results obtained are shown in Table 1.

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Abstract

The application provides a poly-2,5-furandicarboxylic acid glycol ester composite material and a preparation method thereof. The poly-2,5-furandicarboxylic acid glycol ester composite material is prepared by mixing first poly-2,5-furandicarboxylic acid glycol ester, a first polymer and an additive; the additive is formed through the step that cellulose beads or cellulose whiskers are sequentially grafted onto a second poly-2, 5-furandicarboxylic acid glycol ester and a second polymer after being modified by a silane coupling agent with amino at the tail end. When poly-2,5-furandicarboxylic acid glycol ester composite material is compared with the prior art, the mixing for modification is adopted, poly(butylene succinate), polycaprolactone and polypropylene carbonate are fatty group linear polymers with flexible chains, and have excellent flexibility and relatively high elongation at break, so that the tenacity of the poly-2,5-furandicarboxylic acid glycol ester can be increased, and the impact strength can be improved; by adding the additive, the interfacial compatibility of the composite can be improved, and the cellulose beads or the cellulose whiskers in the additive have the function of strengthening the composite.

Description

technical field [0001] The invention belongs to the technical field of polyester, and in particular relates to a polyethylene 2,5-furandicarboxylate composite material and a preparation method thereof. Background technique [0002] Polyester is a general term for polymers obtained by polycondensation of polyols and polybasic acids. It is a class of engineering plastics with excellent performance and a wide range of uses, including polyethylene terephthalate (PET), polybutylene terephthalate (PBT) and polyarylate, etc. Among them, PET is widely used in the production of engineering plastics and mechanical parts due to its good fiber-forming properties, mechanical properties, wear resistance, creep resistance and electrical insulation. [0003] PET is synthesized from terephthalic acid and ethylene glycol through polycondensation reaction, where the molecular formula of ethylene glycol is C 2 h 6 o 2 , the molecular weight is 62.07, and the CAS registration number is 107-2...

Claims

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Application Information

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IPC IPC(8): C08L67/02C08L67/04C08L69/00C08L1/08C08G81/00
Inventor 周光远姜敏陈英张强
Owner 芜湖万隆新材料有限公司
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