Improvements in or relating to curing agents

文档序号:788762 发布日期:2021-04-09 浏览:9次 中文

阅读说明:本技术 固化剂的改善或与之相关的改善 (Improvements in or relating to curing agents ) 是由 C·梅森 N·弗奇 于 2019-08-30 设计创作,主要内容包括:一种固化体系,其包含己二酸二酰肼和/或间苯二甲酸二酰肼与包合物的组合,其中所述包合物的客体化合物包括咪唑、咪唑啉或二氮杂双环烷烃(DBCA)。(A curing system comprising adipic and/or isophthalic dihydrazides in combination with an inclusion complex, wherein the guest compound of the inclusion complex comprises an imidazole, imidazoline, or Diazabicycloalkane (DBCA).)

1. A curing composition comprising adipic and/or isophthalic dihydrazides in combination with an inclusion complex, wherein the guest compound of the inclusion complex comprises an imidazole, imidazoline, or Diazabicycloalkane (DBCA).

2. The curing composition of claim 1, wherein the clathrate comprises a host component and a guest component selected from at least one compound selected from compounds represented by the following formula:

wherein R is1Represents a hydrogen atom, C1-C10Alkyl, aryl, arylalkyl, or cyanoethyl, and R2To R4Each independently represents a hydrogen atom, a nitro group, a halogen atom, C1-C20Alkyl, C substituted by hydroxy1-C20Alkyl, aryl, arylalkyl, or C1-C20An acyl group; and the moiety having a dotted line represents a single bond or a double bond, and a Diazabicycloalkane (DBCA), such as [1, 8-diazabicyclo [5.4.0 ]]Undecene-7, 1, 4-diazabicyclo [2.2.2]Octane and 1, 5-diazabicyclo [4.3.0]Non-5-ene.]

And adipic acid dihydrazide or isophthalic acid dihydrazide.

3. The cured composition of claim 1 or claim 2, wherein the host component of the clathrate contains a single carboxylic acid group or carboxylic acid ester group.

4. The curing composition of any one of claims 1 to 3, wherein the molar ratio of host component to guest component in the clathrate compound is preferably in a range from 0.5 to 2, preferably from 0.7 to 1.7, more preferably from 0.9 to 1.5 and more preferably from 0.95 to 1.4 or from 0.95 to 1.1.

5. The cured composition of any of the preceding claims, wherein the composition comprises a urea-based accelerator.

6. A resin formulation comprising a thermosetting resin and the cured composition according to any one of claims 1 to 5.

7. The resin formulation according to claim 6, comprising a multifunctional epoxy resin, and which can be stored for several weeks and can be cured at 150 ℃ in about 100 seconds, and which achieves a cured Tg in the range from 145 to 165 ℃, preferably from 155 to 165 ℃, as measured according to ASTM E1356.

8. A cured resin derived from the resin formulation of claim 7 or claim 6.

9. Use of the resin formulation according to claim 7 or claim 6 as a matrix in a fibre-reinforced composite material.

10. Use according to claim 9 in prepregs or by resin infusion of dry fibre materials laid in moulds with a resin formulation according to claim 6 or 7.

11. A fiber-reinforced composite material obtained by thermal curing of the resin formulation according to claim 6 or 7.

12. A molding material comprising the thermosetting resin composition according to claim 6 or claim 7 in combination with a fiber reinforcement.

13. Moulding material according to claim 12, wherein the preferred fibre material is selected from the group consisting of carbon fibres, glass fibres, aramids and mixtures thereof.

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