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A kind of reaction injection pultrusion molding equipment and reaction injection pultrusion molding 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: 2019-08-30
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • A kind of reaction injection pultrusion molding equipment and reaction injection pultrusion molding method
  • A kind of reaction injection pultrusion molding equipment and reaction injection pultrusion molding method
  • A kind of reaction injection pultrusion molding equipment and reaction injection pultrusion molding method

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Embodiment 1

[0055] Such as Figure 1-4 As shown, this embodiment provides a reaction injection pultrusion molding equipment, including:

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

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

[0058] The impregnation section 4 is used to impregnate the resin and the preheated fibers;

[0059] The heating section 5 is used to make the impregnated fibers undergo a curing reaction;

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

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

[0062] Preferably, the two ends of the preheating section 3 are provided with ...

Embodiment 2

[0085] 50 parts by weight of caprolactam, 2 parts by weight of sodium caprolactam and 0.5 parts 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 parts by weight of methyl silicone oil are added to the resin The two resin tanks provided with the unit were heated to 90°C, and vacuum dehydrated for 10 minutes, and kept in a stirring state. After vacuum dehydration, nitrogen was passed into the resin tank for protection.

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

[0087] The hot air flow in the preheating section 3 is 160°C, the residence time is 15 minutes, t...

Embodiment 3

[0091] Put 50 parts by weight of caprolactam, 4 parts by weight of caprolactam magnesium bromide and 1 part by weight of simethicone oil, 50 parts by weight of caprolactam, 4 parts by weight of N-acetylated caprolactam and 1 part by weight of simethicone oil on the two sides of the resin providing unit. heated to 100°C in a resin tank, and vacuum dehydrated for 15 minutes, and kept in a stirring state. 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, impregnating section 4, heating section 5, cooling section 6, and finally fixed on the tractor. Thread the injection gun and nitrogen pipeline to the impregnation section 4, feed nitrogen, start the plunger metering pump and tractor, and start production.

[0093] The hot air flow in the preheating section 3 is 180°C, the residence time is 10 minutes, the temperature i...

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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 Patents(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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