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Polyphenylene-oxide-filled (PPO-filled) aligned carbon nanotube bundle (ACNTB)/thermosetting resin and preparation method thereof

A technology of oriented carbon nanotubes and polyphenylene ether, applied in the field of polymer composite material preparation, to achieve the effects of increasing interface effects, excellent heat resistance, and improving mechanical properties

Active Publication Date: 2016-12-14
重庆辰鸿实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the brittleness of CE resin itself and solve the high heat resistance and high mechanical properties required for its application in high-tech fields, the present invention provides a high-performance polyphenylene ether (PPO) filled ACNTB (ACNTB@PPO) / Thermosetting resin and its preparation method, the prepared resin system can be used to prepare high-speed digital and high-frequency printed circuit boards, aerospace high-performance structural composite materials, etc.

Method used

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  • Polyphenylene-oxide-filled (PPO-filled) aligned carbon nanotube bundle (ACNTB)/thermosetting resin and preparation method thereof
  • Polyphenylene-oxide-filled (PPO-filled) aligned carbon nanotube bundle (ACNTB)/thermosetting resin and preparation method thereof
  • Polyphenylene-oxide-filled (PPO-filled) aligned carbon nanotube bundle (ACNTB)/thermosetting resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] (1) Preparation of ACNTB@PPO

[0025] Dissolve 2g of vinyl-terminated PPO with a number average molecular weight of 2200 in about 90g of toluene solution to obtain a PPO solution. Add 1.5g of ACNTB to the solution, stir and defoam under vacuum at room temperature. Under capillary force and vacuum pressure, PPO The solution will penetrate into the pores between the ACNTB tube and the tube. As the solvent evaporates, the solution becomes viscous (5Pa·s), add 200g ethanol, stir for 2h, filter the solution and dry to obtain polyphenylene ether filled oriented carbon nano The tube bundle particles are marked as ACNTB@PPO particle powder, and the PPO content in the obtained ACNTB@PPO particles is about 51wt%. figure 1 Scanning electron microscope (SEM) and transmission electron microscope (TEM) pictures of ACNTB and ACNTB@PPO particles, a is ACNTB, b is ACNTB@PPO particle. Compared figure 1 a and b, it can be seen that the gap between the carbon tube and the carbon tube in the A...

Embodiment 2

[0032] Mix 50g of CE (bisphenol A cyanate ester) and 0.5g of diaminodiphenyl sulfone, heat and prepolymerize at 145°C and stir for 1.5h, then add 2.5g of N,N'-4,4'-diphenylmethane The ACNTB@PPO particles prepared in Example 1 and 1g ACNTB@PPO particles were heated and pre-polymerized at 145°C and stirred for 1 hour to obtain the ACNTB@PPO / CE pre-polymerization system; the pre-polymerization system was injected into the mold preheated at 145°C, After vacuum degassing at 150-160℃, solidify according to temperature program 160℃ / 2h+180℃ / 2h+200℃ / 2h+220℃ / 2h, and obtain ACNTB@PPO / CE composite material system after natural cooling .

[0033] In order to compare the performance, the same curing process was used to prepare the CE resin composite material (ACNTB / PPO / CE) of ACNTB and PPO with the same content as the ACNTB@PPO / CE composite material. Table 2 lists the mechanical properties, glass transition temperature and limited oxygen index of the ACNTB@PPO / CE composite system. Comparing ...

Embodiment 3

[0037] (1) Preparation of ACNTB@PPO

[0038] Calculated by weight, dissolve 2g vinyl-terminated PPO with a number average molecular weight of 1100 in about 90g toluene solution to obtain a toluene solution of PPO. Add 2g ACNTB to the solution. Stir and vacuum degas at room temperature. Under vacuum pressure, the PPO The toluene solution will effectively penetrate into the pores between the ACNTB tubes. As the solvent evaporates, the solution becomes viscous (20Pa·s). Add about 200g of ethanol, stir for 2h, filter the solution and dry to obtain ACNTB@PPO particle powder. The PPO content in the obtained ACNTB@PPO particles is about 40wt%.

[0039] (2) Preparation of ACNTB@PPO / CE composite material

[0040] Heat 50g of CE (bisphenol E cyanate ester) at 145°C for 2h to prepolymerize and stir, then add 1.5g of N,N'-4,4'-diphenyl ether bismaleimide and 2gACNTB@PPO particles, and then Heat and pre-polymerize at 145°C and stir for 1 hour to obtain ACNTB@PPO / CE pre-polymerized system; injec...

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Abstract

The invention relates to a polyphenylene-oxide-filled (PPO-filled) aligned carbon nanotube bundle (ACNTB) / thermosetting resin and a preparation method thereof. The preparation method comprises the following steps: adding PPO-filled ACNTB particles into a cyanate ester (CE) resin system, and curing to obtain the high-performance CE composite material system. The PPO is filled into the gaps between carbon tubes in the ACNTB, so that the mechanical properties of the ACNTB are enhanced; the PPO-filled ACNTB particles are added into the CE resin; and curing treatment is carried out to obtain the high-performance CE resin system composite material. The PPO-filled (ACNTB) / thermosetting resin has the advantages of excellent mechanical properties, excellent heat resistance, excellent flame retardancy and the like. The preparation method has the characteristics of wide applicability and simple operating technique. The resin system can be used for preparing high-performance composite materials, electronic devices and the like for aerospace.

Description

Technical field [0001] The invention belongs to the field of polymer composite material preparation, and specifically relates to a high-performance polyphenylene ether filled oriented carbon nanotube bundle / thermosetting resin and a preparation method thereof. technical background [0002] Cyanate ester (CE) resin is a high-performance resin, and its cured product has high thermal properties, excellent mechanical properties, and low dielectric properties. It has a wide range of applications in the fields of electronics manufacturing, aerospace and aviation. However, because the triazine ring structure of the CE resin cured product is highly symmetrical and the crystallinity is high, the cured resin product is more brittle, so toughening is required. In addition, the development of high technology and the harsh application environment of materials require CE composite materials to have more and more excellent comprehensive properties. Therefore, actively improving the performance...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L79/04C08L71/12C08L79/08C08K7/24C08K3/04
CPCC08K2201/011C08L79/04C08L2201/02C08L2201/08C08L2203/20C08L2205/03C08L71/123C08L79/085C08K7/24C08K3/04
Inventor 袁莉张毅梁国正顾嫒娟
Owner 重庆辰鸿实业发展有限公司
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