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Nylon/polyurethane supercritical foamed composite material and preparation method thereof

A composite material and polyurethane technology, which is applied in the field of foam materials, can solve the problems of poor mechanical properties such as rebound rate, water absorption rate, dimensional stability, strength and poor performance of foam materials of nylon or polyurethane, and poor foam materials. Resilience, water absorption, dimensional stability, strength and other mechanical properties and poor service performance, large cell structure size and other problems, to achieve the effect of improving quality stability, good dimensional stability, and small irreversible deformation

Pending Publication Date: 2020-02-14
福建安达福新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. When foaming, it is difficult for the supercritical fluid (carbon dioxide) to enter the interior of the nylon or polyurethane base material, resulting in uneven foaming, small or large cell structure size, and unevenness, resulting in the rebound rate and water absorption of the foamed material. Poor mechanical properties such as rate, dimensional stability, strength and serviceability;
[0009] 2. Due to the single or unreasonable formula, under the same foaming conditions, nylon or polyurethane foaming materials have poor mechanical properties such as rebound rate, water absorption rate, dimensional stability, strength and poor performance.

Method used

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  • Nylon/polyurethane supercritical foamed composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] A kind of nylon / polyurethane supercritical foaming composite material, is made of the raw material that comprises following parts by weight:

[0052] 300-350 parts of polyamide,

[0053] 60-72 parts of polyurethane,

[0054] 40-48 parts of polyamide-polysiloxane multi-block copolymer,

[0055] 6-8 parts of graphene fiber,

[0056] 5-7 parts of crosslinking agent,

[0057] 3 to 4 parts of nucleating agent;

[0058] Described polyamide is the mixture of dodecane terephthalamide-dodecane isophthalamide copolyamide and polyhexamethylene sebacamide, wherein, dodecane terephthalamide The mass percent of the amine-isophthalamide dodecanediamine copolyamide is 65% to 72%, and the balance is polyhexamethylene sebacamide;

[0059] The graphene fiber is a graphene fiber spun from nanoscale edge graphene oxide sheets, and the fiber length is 80-120um.

[0060] Preferably, the nylon / polyurethane supercritical foam composite material is made of raw materials comprising the foll...

Embodiment 2

[0080] A kind of nylon / polyurethane supercritical foaming composite material, is made of the raw material that comprises following parts by weight:

[0081] 300 parts of polyamide,

[0082] 60 parts of polyurethane,

[0083] 40 parts of polyamide-polysiloxane multi-block copolymer,

[0084] 6 parts of graphene fiber,

[0085] 5 parts of crosslinking agent,

[0086] 3 parts of nucleating agent;

[0087] Described polyamide is the mixture of dodecane terephthalamide-dodecane isophthalamide copolyamide and polyhexamethylene sebacamide, wherein, dodecane terephthalamide The mass percent of amine-isophthalamide dodecanediamine copolyamide is 65%, and the balance is polyhexamethylene sebacamide;

[0088] The graphene fiber is a graphene fiber spun from nanoscale edge graphene oxide sheet, and the fiber length is 80-100um.

[0089] In this embodiment, the polyurethane is polyether polyurethane.

[0090] In this embodiment, the relative content of carboxyl groups in the edge gr...

Embodiment 3

[0101] A kind of nylon / polyurethane supercritical foaming composite material, is made of the raw material that comprises following parts by weight:

[0102] 350 parts of polyamide,

[0103] 72 parts of polyurethane,

[0104] 48 parts of polyamide-polysiloxane multi-block copolymer,

[0105] 8 parts of graphene fiber,

[0106] 7 parts of crosslinking agent,

[0107] 4 parts of nucleating agent;

[0108] Described polyamide is the mixture of dodecane terephthalamide-dodecane isophthalamide copolyamide and polyhexamethylene sebacamide, wherein, dodecane terephthalamide The mass percent of amine-isophthalamide dodecanediamine copolyamide is 72%, and the balance is polyhexamethylene sebacamide;

[0109] The graphene fiber is a graphene fiber spun from nanoscale edge graphene oxide sheets, and the fiber length is 100-120um.

[0110] In this embodiment, the polyurethane is polyether polyurethane.

[0111] In this embodiment, the relative content of carboxyl groups in the edge ...

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Abstract

The invention discloses a nylon / polyurethane supercritical foamed composite material and a preparation method thereof. The nylon / polyurethane supercritical foamed composite material is prepared from the following raw materials in parts by weight: 300-350 parts of polyamide, 60-72 parts of polyurethane, 40-48 parts of a polyamide-polysiloxane segmented copolymer, 6-8 parts of graphene fiber, 5-7 parts of a cross-linking agent and 3-4 parts of a nucleating agent. The nylon / polyurethane supercritical foamed composite material disclosed by the invention is good in foaming effect and high in foaming efficiency; the foam holes are uniform, small and compact; the advantages of high resilience rate, low water absorption rate, good dimensional stability, small irreversible deformation after being pressed, high tensile strength, good mechanical properties, light weight, high strength and the like excellent mechanical properties and use properties are achieved.

Description

technical field [0001] The invention relates to the field of foaming materials, in particular to a nylon / polyurethane supercritical foaming composite material and a preparation method thereof. Background technique [0002] The name of TPU is thermoplastic polyurethane elastomer. It is mainly divided into polyester type and polyether type. It has a wide range of hardness (60HA-85HD), wear resistance, oil resistance, transparency, and good elasticity. It is widely used in daily necessities, sporting goods, toys, decorative materials and other fields. Halogen-free resistance Burning TPU can also replace soft PVC to meet environmental protection requirements in more and more fields. The so-called elastomer refers to a polymer material with glass transition temperature lower than room temperature, elongation at break > 50%, and better recovery after external force is removed. Polyurethane elastomer is a relatively special category of elastomers. Polyurethane elastomer has a ...

Claims

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Application Information

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IPC IPC(8): C08L77/06C08L75/08C08L83/10C08K13/04C08K7/06C08K5/14C08K3/36C08K3/22C08J9/12
CPCC08J9/0023C08J9/0061C08J9/0071C08J9/0085C08J9/122C08J2203/06C08J2203/08C08J2377/06C08J2475/08C08J2477/06C08J2483/10
Inventor 丁尤权丁星懿吕方舟
Owner 福建安达福新材料科技有限公司
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