Composite material for pultrusion polyurethane resin and preparation method thereof

A technology of polyurethane resin and composite material, which is applied in the field of polyurethane resin for pultrusion, can solve the problems that cannot be used in occasions with high mechanical properties, poor mechanical properties of unsaturated polyester, slow curing speed, etc. The effect of excessive connection and fast response

Active Publication Date: 2012-10-17
南京聚发新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Unsaturated polyester has poor mechanical properties and cannot be used in some occasions that require high mechanical properties, and the curing agent is peroxide, which is flammable and explosive, and processing has certain dangers
Epoxy resin is a high-performance resin, but its price is expensive, its curing speed is slow, and because of its high cross-linking, the material is hard and brittle, and its toughness is insufficient

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Put polyether 4110 with a molecular weight of 500 and an average functionality of 4 and polyether 210 with a molecular weight of 500 and a functionality of 2 (Suzhou Sinochem International Polyurethane Co., Ltd.) at 120°C for 1-2 hours with a vacuum pump to remove Moisture and other small molecular substances, weighing 2.7 Kg and 0.4 Kg respectively, 20 grams of zinc naphthenate-bismuth naphthenate catalyst (100E, Shanghai Rongrong Chemical Co., Ltd.), 10 grams of water remover (ALT-202, Hunan Anxiang Elite Chemical Co., Ltd.) were mixed evenly and placed in tank B; 3 Kg of liquefied MDI (WANNATE1635, Yantai Wanhua Polyurethane Co., Ltd.) was weighed and placed in tank A. Under the action of a certain tension, the carbon fiber passes through the mold at a speed of 10cm / min, and at intervals of 2min, a certain amount of mixed resin glue is injected into the mold through a two-component pouring system to infiltrate with the carbon fiber bundles, and then solidify and leave...

Embodiment 2

[0042] Polycaprolactone polyol with a molecular weight of 300 and a functionality of 3 (PCL300, Shanghai Fuxinyuan Chemical Co., Ltd.) and a polytetrahydrofuran ether diol with a molecular weight of 650 and a functionality of 2 (PTMG650, Shanghai Gaoqiao BASF Co., Ltd.) is a difunctional polyether. Use a vacuum pump at 120°C for 1-2 hours to remove water and other small molecular substances. Weigh 2.4 Kg and 6.5 Kg respectively. 8g of dibutyltin dilaurate catalyst (commercially available T- 12 catalyst), 80g dewatering agent (ALT-101, Hunan Anxiang Elite Chemical Co., Ltd.), 200g powdered molecular sieve (Shanghai Yuzhou Desiccant Co., Ltd.) mixed and stirred evenly, placed in tank B; polymerized with 3.5 Kg MDI (5005, Huntsman Chemical Co., Ltd.), placed in tank A. Under the action of a certain tension, the carbon fiber passes through the mold at a speed of 10cm / min, and at intervals of 2min, a certain amount of mixed resin glue is injected into the mold through a two-compone...

Embodiment 3

[0044]The polycaprolactone polyol with a molecular weight of 450 and a functionality of 3 (made in the laboratory) was pumped with a vacuum pump for 1-2 hours at 120°C to remove moisture, and 2.7 Kg, 8g of dibutyltin dilaurate catalyst ( Commercially available T-12 catalyst), 80g of dewatering agent (ALT-101, Hunan Anxiang Elite Chemical Co., Ltd.), 200g of powdered molecular sieve (Shanghai Yuzhou Desiccant Co., Ltd.) mix well and place in tank B ; Weigh 3 Kg polymeric MDI (5005, Huntsman Chemical Co., Ltd.), and place it in tank A. Under the action of a certain tension, the glass fiber passes through the mold at a speed of 20cm / min, and at intervals of 1min, a certain amount of mixed resin glue is injected into the mold through the two-component pouring system, infiltrated with the glass fiber bundles, and then cured , leaving the mold. According to the national standard GB / T 16421-1996, the tensile strength, elongation at break, flexural strength and flexural modulus of th...

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Abstract

The invention discloses a composite material for pultrusion polyurethane resin and a preparation method thereof. The composite material is prepared from continuous fiber and polyurethane resin; the continuous fiber is selected from glass fiber or carbon fiber and is 60-85% of the total volume of the composite material in percentage by weight; and the polyurethane resin is 15-40% of the total volume of the composite material in percentage by weight. The resin disclosed by the invention has fast speed during curing, high degree of cross-linking, excellent mechanical property and good wettability to fiber reinforced materials.

Description

technical field [0001] The invention relates to the technical field of polyurethane resin for pultrusion, in particular to a composite material of polyurethane resin for pultrusion and a preparation method thereof. Background technique [0002] Pultrusion composite materials are composed of various resins and high-performance fibers, mainly for the production of large-scale, complex cross-section, and thick-walled products. The development focus is: new marine composite materials, power transmission, sports engineering and high-strength sports. Structural components for equipment, and high-rise building projects. The characteristics of pultrusion molding are as follows: [0003] 1. The process is simple and efficient, suitable for large-scale production of high-performance fiber composite materials. [0004] 2. Pultrusion molding can give full play to the reinforcing effect of fibers. In most composite material manufacturing processes, the fibers are discontinuous, which ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/06C08L75/08C08G18/76C08G18/48C08G18/42C08G18/22C08K13/02C08K5/353C08K5/29C08K3/26C08K3/22C08K3/34B29C70/52
Inventor 滕鑫顾晓军
Owner 南京聚发新材料有限公司
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