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RU2019100991A - Препрег и способ его производства - Google Patents

Препрег и способ его производства Download PDF

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Publication number
RU2019100991A
RU2019100991A RU2019100991A RU2019100991A RU2019100991A RU 2019100991 A RU2019100991 A RU 2019100991A RU 2019100991 A RU2019100991 A RU 2019100991A RU 2019100991 A RU2019100991 A RU 2019100991A RU 2019100991 A RU2019100991 A RU 2019100991A
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RU
Russia
Prior art keywords
prepreg
resin
coefficient
temperature
thermosetting resin
Prior art date
Application number
RU2019100991A
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English (en)
Inventor
Юта НАИТО
Сиори КАВАМОТО
Нарумити САТО
Итиро ТАКЕТА
Юдзо ФУДЗИТА
Такуя КАРАКИ
Original Assignee
Торэй Индастриз, Инк.
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Publication date
Application filed by Торэй Индастриз, Инк. filed Critical Торэй Индастриз, Инк.
Publication of RU2019100991A publication Critical patent/RU2019100991A/ru

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    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
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    • B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/12—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat
    • B29C70/14—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of short length, e.g. in the form of a mat oriented
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    • B29C70/06—Fibrous reinforcements only
    • B29C70/10—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres
    • B29C70/16—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length
    • B29C70/20—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres
    • B29C70/205—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration
    • B29C70/207—Fibrous reinforcements only characterised by the structure of fibrous reinforcements, e.g. hollow fibres using fibres of substantial or continuous length oriented in a single direction, e.g. roofing or other parallel fibres the structure being shaped to form a three-dimensional configuration arranged in parallel planes of fibres crossing at substantial angles
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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Reinforced Plastic Materials (AREA)

Claims (14)

1. Препрег, включающий
слой волокна, содержащий однонаправленно скомпонованные дискретные углеродные волокна и термоотверждающуюся смолу; и
слой смолы, присутствующий на, по меньшей мере, одной стороне упомянутого слоя волокна и содержащий термоотверждающуюся смолу и термопластичную смолу;
где упомянутый препрег содержит углеродные волокна, характеризующиеся поверхностной массой волокон в диапазоне от 120 до 300 г/м2, и характеризуется массовой долей смолы в диапазоне от 25 до 50% по отношению к полной массе упомянутого препрега; и
где температура, при которой коэффициент межслоевого трения составляет 0,05 и менее, находится в температурном диапазоне от 40 до 80°С, при этом коэффициент межслоевого трения обуславливается контактной поверхностью раздела между слоями упомянутого препрега при вытягивании среднего слоя из трех слоев, каждый из которых изготовлен из упомянутого препрега и уложен, причем упомянутый коэффициент межслоевого трения измеряют с интервалами в 10°С в температурном диапазоне от 40°С до 80°С в условиях, включающих скорость вытягивания 0,2 мм/мин, перпендикулярное напряжение 0,08 МПа и длину вытягивания 1 мм.
2. Препрег по п. 1, где упомянутый слой смолы содержит твердую термопластичную смолу, растворимую в термоотверждающейся смоле.
3. Препрег по п. 2, где упомянутая твердая термопластичная смола, растворимая в упомянутой термоотверждающейся смоле, имеет форму частиц.
4. Препрег по любому из пп. 1-3, где упомянутый слой смолы содержит термопластичную смолу, нерастворимую в упомянутой термоотверждающейся смоле.
5. Препрег по п. 4, где упомянутая термопластичная смола, нерастворимая в упомянутой термоотверждающейся смоле, имеет форму частиц.
6. Препрег по любому из пп. 1-5, где при измерении упомянутого коэффициента межслоевого трения температурная область, в которой упомянутый коэффициент межслоевого трения составляет 0,05 и менее, существует в виде температурной области, имеющей в ширину 20°С и более.
7. Препрег по любому из пп. 1-6, где при измерении упомянутого коэффициента межслоевого трения температура, при которой степень увеличения упомянутого коэффициента межслоевого трения при длине вытягивания 2 мм по отношению к упомянутому коэффициенту межслоевого трения при длине вытягивания 1 мм заключена в пределах 40%, находится в диапазоне от температуры, на 10°С меньшей, до температуры, на 10°С большей, чем температура, при которой упомянутый коэффициент межслоевого трения является наименьшим при длине вытягивания 1 мм.
8. Препрег по любому из пп. 1-7, где листы упомянутого препрега, которые подвергают квазиизотропной укладке и прессованию, характеризуются пределом прочности при сжатии после удара, составляющим 250 МПа и более, согласно измерению в соответствии с ASTM D7137/7137M-07.
9. Препрег по любому из пп. 1-8, где на границе между упомянутым слоем смолы и упомянутым слоем волокна присутствует барьерный слой, образованный из смолы, вязкость которой является большей, чем вязкость упомянутой термоотверждающейся смолы в упомянутом слое смолы в температурной области от 40°С до 80°С.
10. Способ производства упомянутого препрега по любому из пп. 1-9, включающий стадию формования слоя волокна, содержащего однонаправленно скомпонованные дискретные углеродные волокна и термоотверждающуюся смолу, посредством введения рассечений в однонаправленно скомпонованные непрерывные углеродные волокна в слое волокна, содержащем упомянутые однонаправленно скомпонованные непрерывные углеродные волокна и упомянутую термоотверждающуюся смолу.
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