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    METHOD OF ANALYTICALLY DETERMINING LASER POWER FOR SINTERING
    6.
    发明公开
    METHOD OF ANALYTICALLY DETERMINING LASER POWER FOR SINTERING 审中-公开

    公开(公告)号：EP3593999A1

    公开(公告)日：2020-01-15

    申请号：EP18182718.9

    申请日：2018-07-10

    申请人： Hexcel Corporation

    发明人： DEFELICE, Scott ,  DECARMINE, Anthony

    IPC分类号： B33Y80/00 ,  B22F3/105 ,  B33Y10/00 ,  B33Y50/00 ,  B29C64/153 ,  B29C64/386 ,  B29C64/268

    摘要： A method of analytically determining an optimal laser power for configuring a laser in a selective laser sintering process, comprising:
    choosing a batch of powder material for building a plurality of test rods (202a-202e);
    selecting a range of laser power for building the plurality of test rods (202a-202e);
    determining a plurality of power increments within the selected range to define a plurality of different laser power settings;
    programming a selective laser sintering machine (10) to build at least one test rod of said plurality of test rods (202a-202e) at each laser power setting;
    constructing the plurality of test rods (202a-202e) from the batch of powder material (36) based on said programming;
    inspecting each test rod for voids in a surface of the test rod; and
    identifying the laser power setting used to construct a respective test rod without formation of voids in the surface as an optimal laser power for configuring the selective laser sintering machine (10) when conducting a laser sintering process using the chosen batch of powder material (36).

    EXTENDED ROOM TEMPERATURE STORAGE OF EPOXY RESINS
    9.
    发明公开
    EXTENDED ROOM TEMPERATURE STORAGE OF EPOXY RESINS 有权
    ERWEITERTE AUFBEWAHRUNG BEI RAUMTEMPERATUR VON EPOXIDHARZEN

    公开(公告)号：EP3114153A1

    公开(公告)日：2017-01-11

    申请号：EP15708094.6

    申请日：2015-02-25

    申请人： Hexcel Corporation

    发明人： WANG, Yen-Seine

    IPC分类号： C08G59/32 ,  C08G59/50

    CPC分类号： C08L63/00 ,  C08G59/32 ,  C08G59/5033 ,  C08L77/00 ,  C08L79/08 ,  C08L81/06

    摘要： Uncured epoxy resin for use in making prepreg for aerospace applications. The resin includes an epoxy resin component comprising difunctional epoxy resin, trifunctional epoxy resin and/or tetrafunctional epoxy resin and a sufficient amount of [3-(4-aminobenzoyl) oxyphenyl] 4-aminobenzoate (3-ABOAB, as a curing agent, such that the uncured resin can be stored at room temperature of at least 6 weeks and wherein the uncured resin can be fully cured in no more than 2 hours at a temperature of between 175°C and 185°C.

    摘要翻译： 未固化环氧树脂，用于制造航空航天应用的预浸料。 树脂包括环氧树脂组分，其包含双官能环氧树脂，三官能环氧树脂和/或四官能环氧树脂和足量的[3-（4-氨基苯甲酰基）氧苯基] -4-氨基苯甲酸酯（3-ABOAB，作为固化剂， 未固化的树脂可以在至少6周的室温下储存，并且其中未固化的树脂可以在175℃至185℃的温度下在不超过2小时内完全固化。

    COMPOSITE MATERIAL WITH POLYAMIDE PARTICLE MIXTURES
    10.
    发明公开
    COMPOSITE MATERIAL WITH POLYAMIDE PARTICLE MIXTURES 审中-公开
    复合聚酰胺颗粒混合工

    公开(公告)号：EP3105284A1

    公开(公告)日：2016-12-21

    申请号：EP15704932.1

    申请日：2015-02-09

    申请人： Hexcel Corporation

    发明人： WANG, Yen-Seine ,  BOYLE, Maureen

    IPC分类号： C08J5/24 ,  B32B5/26

    摘要： Pre-impregnated composite material (prepreg) is provided that can be cured/molded to form composite parts having high damage tolerance and interlaminar fracture toughness. The matrix resin includes a thermoplastic particle component that includes a mixture of polyamide 12 particles and polyamide 11 particles.