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Reaction injection pultrusion equipment and reaction injection pultrusion method

A pultrusion molding and reaction technology, applied in the field of reaction injection pultrusion molding equipment, can solve the problems of inability to achieve long-term continuous production, failure to make full use of low resin viscosity, poor resin stability, etc., and to reduce the volatilization of toxic resin vapors. , The effect of improving resource utilization and reducing resin loss

Active Publication Date: 2017-03-22
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent CN201010602328.2 uses this reaction pultrusion to prepare continuous fiber heat-increased thermoplastic resin-based composite materials, but this patent still uses a dipping tank to impregnate the fibers, and the resin in the dipping tank has poor stability, and long-term storage will cause polymerization reactions It occurs in advance, and continuous production cannot be realized for a long time. At the same time, in order to increase the amount of glue, a thickener is added to the resin, which fails to make full use of the low viscosity of the resin.

Method used

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  • Reaction injection pultrusion equipment and reaction injection pultrusion method
  • Reaction injection pultrusion equipment and reaction injection pultrusion method

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Embodiment 1

[0055] like Figure 1-4 As shown, the present embodiment provides a reaction injection pultrusion equipment, comprising:

[0056] A forming unit for forming resins and fibers, the forming unit comprising at least four sequentially connected processing sections forming a closed processing channel having two ports:

[0057] Preheating section 3, used to preheat the fibers;

[0058] Impregnation section 4, for impregnating resin and preheated fibers;

[0059] Heating section 5 is used for curing reaction of the impregnated fibers;

[0060] The cooling section 6 is used for cooling and forming the composite material after the solidification reaction has occurred.

[0061] Preferably, the temperature in the preheating section 3 is 120-240° C., and the preheating time of the fibers is 5-20 min; the preheated fibers can be better impregnated with resin.

[0062] Preferably, both ends of the preheating section 3 are provided with a front yarn guide plate 11 and a rear yarn guide p...

Embodiment 2

[0085] 50 parts by weight of caprolactam, 2 parts by weight of sodium caprolactam and 0.5 part by weight of methyl silicone oil, 50 parts by weight of caprolactam, 2 parts by weight of hexamethylene-1,6-diformyl caprolactam and 0.5 part by weight of methyl silicone oil are respectively added to the resin. The two resin tanks that provide the unit are heated to 90° C., and dehydrated under vacuum for 10 minutes, and kept in a stirring state. After vacuum dehydration, nitrogen is introduced into the resin tanks for protection.

[0086] The glass fiber bundles are pre-arranged through the bundle plate, and then guided through the preheating section 3, the impregnation section 4, the heating section 5, and the cooling section 6 in sequence, and finally fixed on the tractor. Connect the injection gun and the nitrogen pipeline to the impregnation section 4 with threads, feed nitrogen, start the plunger metering pump and the tractor, and start production.

[0087] The hot air flow in...

Embodiment 3

[0091] 50 parts by weight of caprolactam, 4 parts by weight of caprolactam magnesium bromide and 1 part by weight of dimethicone, 50 parts by weight of caprolactam, 4 parts by weight of N-acetylated caprolactam and 1 part by weight of dimethicone are respectively used as two parts of the resin providing unit. It was heated to 100°C in a resin tank, dehydrated in vacuum for 15 minutes, and kept stirring. After vacuum dehydration, nitrogen was introduced into the resin tank for protection.

[0092] The carbon fiber bundles are pre-arranged through the cluster plate, and then guided through the preheating section 3, the impregnation section 4, the heating section 5, and the cooling section 6 in turn, and finally fixed on the tractor. Connect the injection gun and the nitrogen pipeline to the impregnation section 4 with threads, feed nitrogen, start the plunger metering pump and the tractor, and start production.

[0093] The hot air flow in the preheating section 3 is 180 °C, the...

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Abstract

The invention provides reaction injection pultrusion equipment and a reaction injection pultrusion method for solving the problems of weak fiber dipping effect and volatilization of poisonous gas in a traditional composite material pultrusion technology. The reaction injection pultrusion equipment comprises a forming unit for forming resins and fibers; the forming unit includes the following at least four machining sections connected in sequence: a preheating section for preheating the fibers, a dipping section for dipping the resins and the preheated fibers, a heating section for curing the resins, and a cooling section for cooling a cured composite material for formation; and the machining sections form a closed machining channel with two ports. The pultrusion method and the corresponding reaction injection pultrusion equipment can realize online resin mixing and fiber dipping, have such advantages as good dipping effect and no volatilization of poisonous gas, and prepare high-fiber content continuous fiber reinforced nylon composite materials.

Description

technical field [0001] The invention belongs to the field of composite materials, in particular to a reaction injection pultrusion molding equipment and a reaction injection pultrusion molding method. Background technique [0002] The pultrusion process is a method of continuous production of composite material profiles. It impregnates the continuous fibers on the creel with resin, and then maintains a certain cross-sectional shape, and makes it solidify in the mold and then continuously releases the mold. This forms an automated production process for pultruded products. Products produced by the pultrusion process have higher tensile strength than ordinary steel. The resin-rich layer on the surface makes it have good corrosion resistance, so it is the best product to replace steel in projects with corrosive environments, and is widely used in transportation, electrician, electrical, electrical insulation, chemical industry, mining, marine , boats, corrosive environment an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52B29C70/54C08G69/16
Inventor 陈轲贾明印薛平
Owner BEIJING UNIV OF CHEM TECH
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