1. The preparation method of the anti-corrosion flame-retardant pultruded glass fiber reinforced plastic bridge frame is characterized by comprising the following steps of: the raw materials comprise glass fiber, epoxy resin, vinyl resin, microcrystalline ceramic, alumina, magnesia, curing agent, adhesion promoter, plasticizer, antioxidant and halogen-free flame retardant, and the specific steps are as follows:

(1) weighing glass fiber, epoxy resin, vinyl resin, microcrystalline ceramic, alumina, magnesia, a curing agent, an adhesion promoter, a plasticizer, an antioxidant and a halogen-free flame retardant according to specified parts for later use;

(2) pouring glass fiber into a reaction kettle, heating to 550-700 ℃, adding epoxy resin, vinyl resin alumina, magnesium oxide and a viscosity reducer, stirring and melting, simultaneously performing vacuum dehydration, adding microcrystalline ceramic, reducing the temperature of the reaction kettle to 65-75 ℃ at a reduction speed of 10-20 ℃/min, uniformly stirring, preserving heat for 80-100min, and drying to obtain a material A;

(3) fully mixing the obtained material A with a plasticizer, an antioxidant and a halogen-free flame retardant, heating to 120-150 ℃, and preserving heat for 50-80min to obtain a material B;

(4) placing the obtained material B in a disposable bridge forming machine for bridge forming;

(5) spraying antirust paint on the surface of the cable bridge, and standing for 24-48h at a cool and ventilated place after spraying to obtain a finished product of the cable bridge.

2. The method for preparing the anti-corrosion flame-retardant pultruded glass fiber reinforced plastic bridge frame according to claim 1, wherein the method comprises the following steps: the raw materials in the step (1) comprise, by weight, 80-90 parts of glass fiber, 40-50 parts of epoxy resin, 10-18 parts of vinyl resin, 3-8 parts of microcrystalline ceramic, 10-14 parts of aluminum oxide, 20-25 parts of magnesium oxide, 15-25 parts of curing agent, 3-6 parts of adhesion promoter, 1-3 parts of plasticizer, 0.5-1.0 part of antioxidant and 6-8 parts of halogen-free flame retardant.

3. The method for preparing the anti-corrosion flame-retardant pultruded glass fiber reinforced plastic bridge frame according to claim 2, wherein the method comprises the following steps: the raw materials comprise, by weight, 80 parts of glass fiber, 40 parts of epoxy resin, 10 parts of vinyl resin, 3 parts of microcrystalline ceramic, 10 parts of aluminum oxide, 20 parts of magnesium oxide, 15 parts of curing agent, 3 parts of adhesion promoter, 1 part of plasticizer, 0.5 part of antioxidant and 6 parts of halogen-free flame retardant.

4. The method for preparing the anti-corrosion flame-retardant pultruded glass fiber reinforced plastic bridge frame according to claim 2, wherein the method comprises the following steps: the raw materials comprise, by weight, 85 parts of glass fiber, 45 parts of epoxy resin, 14 parts of vinyl resin, 5 parts of microcrystalline ceramic, 12 parts of aluminum oxide, 22 parts of magnesium oxide, 20 parts of a curing agent, 5 parts of an adhesion promoter, 2 parts of a plasticizer, 0.8 part of an antioxidant and 7 parts of a halogen-free flame retardant.

5. The method for preparing the anti-corrosion flame-retardant pultruded glass fiber reinforced plastic bridge frame according to claim 2, wherein the method comprises the following steps: the raw materials comprise, by weight, 90 parts of glass fiber, 50 parts of epoxy resin, 18 parts of vinyl resin, 8 parts of microcrystalline ceramic, 14 parts of aluminum oxide, 25 parts of magnesium oxide, 25 parts of a curing agent, 6 parts of an adhesion promoter, 3 parts of a plasticizer, 1.0 part of an antioxidant and 8 parts of a halogen-free flame retardant.

6. The method for preparing the anti-corrosion flame-retardant pultruded glass fiber reinforced plastic bridge frame according to claim 1, wherein the method comprises the following steps: and (3) adopting an ultrasonic stirrer when stirring in the step (2) and the step (3).

7. The method for preparing the anti-corrosion flame-retardant pultruded glass fiber reinforced plastic bridge frame according to claim 1, wherein the method comprises the following steps: the curing agent is one or two of organic acid anhydride and cyan acrylic acid ester glue; the viscosity reducer is preferably a PVC paste resin viscosity reducer; the plasticizer is one or more of dibutyl methylenesuccinate, dibasic ester, diisodecyl glutarate and chlorinated paraffin, the antioxidant is one or more of benzophenone, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether and dipropionic thioic acid diester, and the halogen-free flame retardant is preferably expandable graphite.

Background

The cable bridge is a cable laying device which can realize standardization, systematization and universalization for laying wires, cables and pipes, and the basic types of the cable bridge comprise the following components: the groove type cable bridge is a totally enclosed type cable bridge, which is most suitable for laying computer cables, communication cables, thermocouple cables and control cables of other high-sensitivity systems, and has better effects on shielding interference and protecting cables in heavy corrosion environment; the tray type cable bridge has the advantages of light weight, large load, attractive appearance, simple structure, convenience in installation and the like, and is suitable for installation of power cables and laying of control cables; the stepped cable bridge is suitable for laying large cable of common diameter, especially high and low power cable.

The glass fiber reinforced plastic cable bridge is formed by pressing glass fiber reinforced plastic, a flame retardant and other additives through a composite mould pressing material and a stainless steel shielding net. The glass fiber reinforced plastic cable bridge has the advantages of wide application, high strength, light weight, reasonable structure, low manufacturing cost, long service life, strong corrosion resistance, simple construction, flexible wiring, standard installation, beautiful appearance and the like due to the fact that the selected materials have lower heat conductivity and the addition of a flame retardant, can be conveniently matched with a metal bridge for use, and is suitable for laying power cables with the voltage of below 10 kilovolts, control cables, lighting wiring, pneumatic, hydraulic cables and other outdoor overhead cable ditches and tunnels. The pultruded glass fiber reinforced plastic cable bridge can be applied to the engineering in the fields of petroleum, chemical engineering, electric power, bridges and the like, and has the advantages of beautiful appearance, light weight, corrosion resistance, no rustiness and no maintenance.

At present, the glass fiber reinforced plastic cable bridge is widely applied to the fields of petroleum, chemical industry, electric power and the like, but because the glass fiber reinforced plastic cable bridge is non-conductive and easy to burn, static electricity generated in the use process cannot be eliminated, in addition, the glass fiber reinforced plastic cable bridge does not have a flame retardant function, potential safety hazards are easy to bring, meanwhile, the performance of the glass fiber reinforced plastic bridge used at present in a special environment is limited, the mechanical strength, the corrosion resistance, the antistatic performance and the like of the glass fiber reinforced plastic cable bridge need to be further improved, and therefore technical personnel in the field need to continuously research and develop the glass fiber reinforced plastic bridge with higher performance to.

Disclosure of Invention

The invention aims to solve the technical problem of overcoming the technical defects and provides a preparation method of an anticorrosive flame-retardant pultruded glass fiber reinforced plastic bridge.

In order to solve the problems, the technical scheme of the invention is as follows: the preparation method of the anticorrosive flame-retardant pultruded glass fiber reinforced plastic bridge comprises the following raw materials of glass fiber, epoxy resin, vinyl resin, microcrystalline ceramic, aluminum oxide, magnesium oxide, a curing agent, an adhesion promoter, a plasticizer, an antioxidant and a halogen-free flame retardant, and comprises the following specific steps:

(1) weighing glass fiber, epoxy resin, vinyl resin, microcrystalline ceramic, alumina, magnesia, a curing agent, an adhesion promoter, a plasticizer, an antioxidant and a halogen-free flame retardant according to specified parts for later use;

(2) pouring glass fiber into a reaction kettle, heating to 550-700 ℃, adding epoxy resin, vinyl resin alumina, magnesium oxide and a viscosity reducer, stirring and melting, simultaneously performing vacuum dehydration, adding microcrystalline ceramic, reducing the temperature of the reaction kettle to 65-75 ℃ at a reduction speed of 10-20 ℃/min, uniformly stirring, preserving heat for 80-100min, and drying to obtain a material A;

(3) fully mixing the obtained material A with a plasticizer, an antioxidant and a halogen-free flame retardant, heating to 120-150 ℃, and preserving heat for 50-80min to obtain a material B;

(4) placing the obtained material B in a disposable bridge forming machine for bridge forming;

(5) spraying antirust paint on the surface of the cable bridge, and standing for 24-48h at a cool and ventilated place after spraying to obtain a finished product of the cable bridge.

As an improvement, the raw materials in the step (1) comprise, by weight, 80-90 parts of glass fiber, 40-50 parts of epoxy resin, 10-18 parts of vinyl resin, 3-8 parts of microcrystalline ceramic, 10-14 parts of aluminum oxide, 20-25 parts of magnesium oxide, 15-25 parts of curing agent, 3-6 parts of adhesion promoter, 1-3 parts of plasticizer, 0.5-1.0 part of antioxidant and 6-8 parts of halogen-free flame retardant.

As an improvement, the raw materials comprise, by weight, 80 parts of glass fiber, 40 parts of epoxy resin, 10 parts of vinyl resin, 3 parts of microcrystalline ceramic, 10 parts of aluminum oxide, 20 parts of magnesium oxide, 15 parts of a curing agent, 3 parts of an adhesion promoter, 1 part of a plasticizer, 0.5 part of an antioxidant and 6 parts of a halogen-free flame retardant.

As an improvement, the raw materials comprise, by weight, 85 parts of glass fiber, 45 parts of epoxy resin, 14 parts of vinyl resin, 5 parts of microcrystalline ceramic, 12 parts of aluminum oxide, 22 parts of magnesium oxide, 20 parts of a curing agent, 5 parts of an adhesion promoter, 2 parts of a plasticizer, 0.8 part of an antioxidant and 7 parts of a halogen-free flame retardant.

As an improvement, the raw materials comprise, by weight, 90 parts of glass fiber, 50 parts of epoxy resin, 18 parts of vinyl resin, 8 parts of microcrystalline ceramic, 14 parts of aluminum oxide, 25 parts of magnesium oxide, 25 parts of a curing agent, 6 parts of an adhesion promoter, 3 parts of a plasticizer, 1.0 part of an antioxidant and 8 parts of a halogen-free flame retardant.

As an improvement, an ultrasonic stirrer is adopted when stirring is carried out in the step (2) and the step (3).

As an improvement, the curing agent is one or two of organic acid anhydride and cyanacrylate gum; the viscosity reducer is preferably a PVC paste resin viscosity reducer; the plasticizer is one or more of dibutyl methylenesuccinate, dibasic ester, diisodecyl glutarate and chlorinated paraffin, the antioxidant is one or more of benzophenone, bis (3, 5-tertiary butyl-4-hydroxyphenyl) thioether and dipropionic thioic acid diester, and the halogen-free flame retardant is preferably expandable graphite.

Compared with the prior art, the invention has the advantages that: the preparation method is simple in preparation process, the bridge is prepared by adopting a one-step forming technology, the cost is effectively saved, and the raw materials are mixed in multiple steps in advance, so that the stability of the product can be effectively improved, and the service life of the product is prolonged.

Detailed Description

The present invention is further described below by way of specific examples, but the present invention is not limited to only the following examples. Variations, combinations, or substitutions of the invention, which are within the scope of the invention or the spirit, scope of the invention, will be apparent to those of skill in the art and are within the scope of the invention.

Example one

The method comprises the following specific steps:

(1) weighing glass fiber, epoxy resin, vinyl resin, microcrystalline ceramic, alumina, magnesia, a curing agent, an adhesion promoter, a plasticizer, an antioxidant and a halogen-free flame retardant according to specified parts for later use;

(2) pouring glass fiber into a reaction kettle, heating to 550 ℃, adding epoxy resin, vinyl resin alumina, magnesium oxide and an adhesion promoter, stirring for melting, simultaneously performing vacuum dehydration, adding microcrystalline ceramic, reducing the temperature of the reaction kettle to 65 ℃ at a reduction speed of 10 ℃/min, uniformly stirring, keeping the temperature for 80min, and drying to obtain a material A1;

(3) fully mixing the obtained material A1 with a plasticizer, an antioxidant and a halogen-free flame retardant, heating to 120 ℃, and preserving heat for 50min to obtain a material B1;

(4) placing the obtained material B1 in a disposable bridge forming machine for bridge forming;

(5) spraying antirust paint on the surface of the cable bridge, and standing for 24 hours in a cool and ventilated place after spraying to obtain a finished product of the cable bridge.

The flame retardant coating comprises the following raw materials, by weight, 80 parts of glass fiber, 40 parts of epoxy resin, 10 parts of vinyl resin, 3 parts of microcrystalline ceramic, 10 parts of aluminum oxide, 20 parts of magnesium oxide, 15 parts of a curing agent, 3 parts of a viscosity reducer, 1 part of a plasticizer, 0.5 part of an antioxidant and 6 parts of a halogen-free flame retardant.

The curing agent is organic acid anhydride; the viscosity reducer is a PVC paste resin viscosity reducer; the plasticizer is dibutyl methylenesuccinate and dibasic ester, the antioxidant is benzophenone, and the halogen-free flame retardant is expandable graphite.

Example two

The method comprises the following specific steps:

(1) weighing glass fiber, epoxy resin, vinyl resin, microcrystalline ceramic, alumina, magnesia, a curing agent, an adhesion promoter, a plasticizer, an antioxidant and a halogen-free flame retardant according to specified parts for later use;

(2) pouring glass fiber into a reaction kettle, heating to 650 ℃, then adding epoxy resin, vinyl resin alumina, magnesium oxide and an adhesion promoter, stirring and melting, simultaneously carrying out vacuum dehydration, adding microcrystalline ceramic, reducing the temperature of the reaction kettle to 70 ℃ at a reduction speed of 15 ℃/min, uniformly stirring, keeping the temperature for 90min, and drying to obtain a material A2;

(3) fully mixing the obtained material A2 with a plasticizer, an antioxidant and a halogen-free flame retardant, heating to 135 ℃, and preserving heat for 65min to obtain a material B2;

(4) placing the obtained material B2 in a disposable bridge forming machine for bridge forming;

(5) spraying antirust paint on the surface of the cable bridge, and standing for 36 hours in a cool and ventilated place after spraying to obtain a finished product of the cable bridge.

The raw materials comprise, by weight, 85 parts of glass fiber, 45 parts of epoxy resin, 14 parts of vinyl resin, 5 parts of microcrystalline ceramic, 12 parts of aluminum oxide, 22 parts of magnesium oxide, 20 parts of a curing agent, 5 parts of an adhesion promoter, 2 parts of a plasticizer, 0.8 part of an antioxidant and 7 parts of a halogen-free flame retardant.

The curing agent is organic acid anhydride and cyan acrylic acid ester glue; the viscosity reducer is a PVC paste resin viscosity reducer; the plasticizer is dibutyl methylenesuccinate, the antioxidant benzophenone and the thiodipropionic acid diester are used, and the halogen-free flame retardant is expandable graphite.

EXAMPLE III

The method comprises the following specific steps:

(1) weighing glass fiber, epoxy resin, vinyl resin, microcrystalline ceramic, alumina, magnesia, a curing agent, an adhesion promoter, a plasticizer, an antioxidant and a halogen-free flame retardant according to specified parts for later use;

(2) pouring glass fiber into a reaction kettle, heating to 700 ℃, adding epoxy resin, vinyl resin alumina, magnesium oxide and an adhesion promoter, stirring for melting, simultaneously performing vacuum dehydration, adding microcrystalline ceramic, reducing the temperature of the reaction kettle to 75 ℃ at a reduction speed of 20 ℃/min, uniformly stirring, keeping the temperature for 100min, and drying to obtain a material A3;

(3) fully mixing the obtained material A3 with a plasticizer, an antioxidant and a halogen-free flame retardant, heating to 150 ℃, and preserving heat for 80min to obtain a material B3;

(4) placing the obtained material B3 in a disposable bridge forming machine for bridge forming;

(5) spraying antirust paint on the surface of the cable bridge, and standing for 48 hours in a cool and ventilated place after spraying to obtain a finished product of the cable bridge.

The raw materials comprise, by weight, 90 parts of glass fiber, 50 parts of epoxy resin, 18 parts of vinyl resin, 8 parts of microcrystalline ceramic, 14 parts of aluminum oxide, 25 parts of magnesium oxide, 25 parts of a curing agent, 6 parts of an adhesion promoter, 3 parts of a plasticizer, 1.0 part of an antioxidant and 8 parts of a halogen-free flame retardant.

The curing agent is organic acid anhydride; the viscosity reducer is a PVC paste resin viscosity reducer; the plasticizer is dibutyl methylenesuccinate and dibasic ester, the antioxidant is benzophenone, and the halogen-free flame retardant is expandable graphite.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.