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Resin for resin film infiltration process and preparation method thereof
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A resin film and resin technology are used in the fields of resin and its preparation for resin film infiltration process, resin matrix and its preparation
Inactive Publication Date: 2011-09-28
SUZHOU UNIV
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Abstract
Description
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Problems solved by technology
However, how to design hyperbranched polymers to modify BT resins to obtain a resin system with higher toughness that can be used for RFI molding on the basis of maintaining the excellent dielectric properties and heat resistance of BT resins is still a problem. Difficulties facing researchers
Method used
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Embodiment 1
[0018] The specific steps of the technical solution of this embodiment are as follows:
[0019] Pour γ-(2,3-glycidoxy)propyltrimethoxysilane (KH-560) and deionized water into the reaction bottle at a molar ratio of 1:1.2, adjust the pH to 3, and heat to 60°C for reaction 7hr, obtain hyperbranched polysiloxane after drying in a vacuum oven for 4hr.
[0020] Add 100g of 4,4'-bismaleimide diphenylmethane and 86g of O,O'-diallyl bisphenol A into the reaction flask, heat to 135°C for 35 minutes of prepolymerization to obtain a prepolymer.
[0021] After the temperature of the prepolymer was lowered to 100°C, 30g of bisphenol A cyanate was added and reacted at 100°C for 45 minutes to obtain BT resin.
[0022] Add 10 g of hyperbranched polysiloxane prepared according to the method of this example to BT resin, and react at 80° C. for 30 minutes to obtain a resin for resin film infiltration process. After completion, use the salivation method or the scraping method to form a film or ...
Embodiment 2
[0024] Pour γ-(2,3-glycidoxy)propyltrimethoxysilane (KH-560) and deionized water into the reaction bottle at a molar ratio of 1:1.1, adjust the pH to 3, and heat to 60°C for reaction 7hr, dried in a vacuum oven for 4hr to obtain hyperbranched polysiloxane.
[0025] Add 100g of 4,4'-bismaleimide diphenylmethane, 30g of O,O'-diallyl bisphenol A and 25g of diallyl bisphenol Aether into the reaction flask, heat to 130°C, prepolymerize After reacting for 30 minutes, a prepolymer was obtained.
[0026] After the prepolymer was cooled to 120°C, 35g of bisphenol Acyanate and 15g of dicyclopentadiene cyanate were added, and reacted at 120°C for 30 minutes to obtain BT resin.
[0027] After the BT resin was cooled to 90°C, 20g of hyperbranched polysiloxane prepared according to the method of this example was added, and a resin for resin film infiltration process was obtained after reacting at 90°C for 40 minutes. After the completion, use the salivation method or the scraping method...
Embodiment 3
[0029] Add 100g of 4,4'-bismaleimide diphenylmethane and 90g of O,O'-diallyl bisphenol A into the reaction flask, heat to 120°C for 40 minutes of prepolymerization to obtain a prepolymer.
[0030] After the temperature of the prepolymer was lowered to 100°C, 50g of bisphenol A cyanate was added and reacted at 100°C for 60 minutes to obtain BT resin.
[0031] After the BT resin was cooled to 90°C, 16g of hyperbranched polysiloxane prepared according to the method of Example 1 was added, and a resin for resin film infiltration process was obtained after reacting at 90°C for 40 minutes. After the completion, use the salivation method or the scraping method to form a film on the polyester film, and cool to room temperature to obtain a resin film (sheet) for the resin film infiltration process. Its appearance is an orange-yellow transparent film, which can be folded arbitrarily. Not sticky.
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Abstract
The invention discloses a resin for a resin film infiltration process and a preparation method thereof. The preparation method comprises the following steps: performing prepolymerization on 100 parts by weight of bismaleimide resin and 50 to 90 parts by weight of diallyl allyl phenyl compound at a temperature of between 120 and 140 DEG C for 30 to 60 minutes to obtain a prepolymer; adding 20 to 300 parts by weight of cyanate ester resin after the temperature of the prepolymer is reduced to be between 100 and 120 DEG C; prepolymerizing the mixture at a temperature of between 100 and 120 DEG C for 30 to 60 minutes to obtain bismaleimide-triazine (BT) resin; adding 10 to 50 parts by weight of hyperbranched polyorganosiloxane into the BT resin to react at a temperature of between 80 and 100 DEG C for 20 to 200 minutes, and cooling the reacted products to form a film and obtaining a resin film (sheet) for the resin film infiltration process. A composite prepared from the film sheet has excellent comprehensive mechanical properties, heat resistance and excellent dielectrical property, so the resin can be applied in a plurality of high and new technical fields of space flight and aviation, electronic information, transportation and the like.
Description
technical field [0001] The invention relates to a resin matrix and a preparation method thereof, in particular to a resin used in a resin film infiltration (RFI) process and a preparation method thereof, belonging to the technical field of polymer materials. It is suitable for the preparation of composite materials by RFI process, and the prepared composite materials have excellent comprehensive mechanical properties and can be used in high-tech fields such as aerospace and electronic information. Background technique [0002] The low-cost manufacturing technology of high-performance composite materials is an impressive new development trend in the field of international composite materials research. It breaks the long-standing convention that high-performance composite materials must have high manufacturing costs, and opens up a broad application field for high-performance composite materials. The resin film infiltration (RFI) process is a composite material manufacturing ...
Claims
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Application Information
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