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Bidirectionally-reinforced polyurethane pultrusion plate and preparation method thereof

A technology of polyurethane and polyurethane resin, applied in the field of bidirectionally reinforced polyurethane pultruded sheet and its preparation, can solve the problems of limitation and low tensile strength, and achieve the effect of improving radial tensile strength and high transverse tensile strength

Inactive Publication Date: 2018-07-27
山西凝固力新型材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the polyurethane pultrusion sheet using glass fiber roving as fiber reinforcement has a high tensile strength in the pultrusion length direction (radial direction), reaching 300-400MPa or even higher, but it is perpendicular to the pultrusion length direction. The (transverse) tensile strength is very low, only 70-90MPa, generally lower than 100MPa, which limits the application of polyurethane pultrusion in special fields that require transverse tensile strength

Method used

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  • Bidirectionally-reinforced polyurethane pultrusion plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A two-way reinforced polyurethane pultruded board comprising components by weight of:

[0023] Polyurethane resin 10%;

[0024] Glass fiber reinforcement 90%;

[0025] Wherein, the glass fiber reinforced material is glass fiber roving and glass fiber mat.

[0026] The polyurethane resin includes a polyurethane A component and a polyurethane B component; wherein, the polyurethane A component is a reactive component formed by mixing polyether polyols, water and auxiliary agents, and the polyurethane B component is a multi-substance Methyl polyphenyl polyisocyanate and its derivatives (such as modified MDI). The auxiliary agent includes a catalyst, a flame retardant, an anti-aging agent, a leveling agent, and a crosslinking agent.

[0027] A preparation method of a two-way reinforced polyurethane pultruded board, comprising the following steps:

[0028] In step (1), after the glass fiber reinforced material is drawn from the creel, it enters a resin metering / mixer and ...

Embodiment 2

[0033] A two-way reinforced polyurethane pultruded board comprising components by weight of:

[0034] Polyurethane resin 20%;

[0035] Glass fiber reinforcement 80%;

[0036] Wherein, the glass fiber reinforced material is glass fiber roving, glass fiber mat and glass fiber cloth.

[0037] The polyurethane resin includes a polyurethane A component and a polyurethane B component; wherein, the polyurethane A component is a reactive component formed by mixing polyether polyols, water and auxiliary agents, and the polyurethane B component is a multi-substance Methyl polyphenyl polyisocyanate and its derivatives (such as modified MDI). The auxiliary agent includes a catalyst, a flame retardant, an anti-aging agent, a leveling agent, and a crosslinking agent.

[0038] A preparation method of a two-way reinforced polyurethane pultruded board, comprising the following steps:

[0039] In step (1), after the glass fiber reinforced material is drawn from the creel, it enters a resin ...

Embodiment 3

[0044] A two-way reinforced polyurethane pultruded board comprising components by weight of:

[0045] Polyurethane resin 30%;

[0046] Glass fiber reinforcement 70%;

[0047] Wherein, the glass fiber reinforced material is glass fiber roving and glass fiber cloth.

[0048] The polyurethane resin includes a polyurethane A component and a polyurethane B component; wherein, the polyurethane A component is a reactive component formed by mixing polyether polyols, water and auxiliary agents, and the polyurethane B component is a multi-substance Methyl polyphenyl polyisocyanate and its derivatives (such as modified MDI). The auxiliary agent includes a catalyst, a flame retardant, an anti-aging agent, a leveling agent, and a crosslinking agent.

[0049] A preparation method of a two-way reinforced polyurethane pultruded board, comprising the following steps:

[0050] In step (1), after the glass fiber reinforced material is drawn from the creel, it enters a resin metering / mixer an...

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Abstract

The invention discloses a bidirectionally-reinforced polyurethane pultrusion plate comprising the following components in percentage by weight: 10%-30% of polyurethane resin and 70%-90% of glass fiberreinforced material, wherein the glass fiber reinforced material comprises glass fiber roving and a glass fiber mat, or glass fiber roving and glass fiber cloth, or the glass fiber roving, the glassfiber mat and the glass fiber cloth. The invention further discloses a preparation method of the bidirectionally-reinforced polyurethane pultrusion plate. Due to the matching of the roving, the mat and the cloth, the obtained product, namely the bidirectionally-reinforced polyurethane pultrusion plate disclosed by the invention, has high transverse tensile strength higher than 120MPa, and meanwhile, the radial tensile strength is also improved.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a two-way reinforced polyurethane pultrusion board and a preparation method thereof. Background technique [0002] The pultrusion process is still in the stage of rapid development. From the perspective of domestic and foreign development trends, it mainly produces large-scale, complex cross-section, and thick-walled products, and its development focuses on new marine composite materials, power transmission, structural components for civil engineering, and high-rise building projects. At present, the thickest pultruded product in foreign countries has reached 101.6mm. At the same time, the pultrusion process has also developed from the "black art" in the mold cavity to a more scientific experimental method to repeatedly verify and study the curing kinetics in the mold. Electronic equipment, resin injection, mold design, etc. continue to optimize quality a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L75/06C08K7/14C08J5/04B29D7/01
CPCB29D7/01C08J5/043C08J2375/06C08J2375/08C08K7/14C08L75/08C08L75/06
Inventor 张欣钊王建中王涛刘先锋
Owner 山西凝固力新型材料股份有限公司
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