CN104909753A - Composite modified colloidal graphite-carbonized foam phenolic resin base insulation material for forklift truck engine exhaust pipe and preparation method of composite modified colloidal graphite-carbonized foam phenolic resin base insulation material - Google Patents

Abstract

The invention relates to a heat insulation material for an exhaust pipe, in particular to a composite modified colloidal graphite-carbonized foam phenolic resin base insulation material for a forklift truck engine exhaust pipe and a preparation method of the composite modified colloidal graphite-carbonized foam phenolic resin base insulation material. Phenolic resin doped with mesocarbon microbeads is firstly foamed in the preparation process, so that the prepared modified phenolic resin foam powder is relatively efficient in the subsequent carbonization process; the carbonization material is compact in structure, relatively high in strength, and relatively low in heat conductivity coefficient; a composite colloidal graphite powder adhesive containing silica sol has good adhesive ability and casting ability; the carbonization effect is also improved; the material porosity is improved; the material subjected to high-temperature treatment has the advantages of high strength and tenacity, light weight, thermal insulation and noise reduction; the products such as a heat insulation plate and a heat insulation sleeve prepared from the material are excellent in heat insulation effect, high in efficiency and durable; and the work environment of a forklift truck engine is effectively improved.

Description

A kind of forklift engine vapor pipe composite modified colloid graphite-charing foamed phenolic resin base lagging material and preparation method thereof

Technical field

The present invention relates to vapor pipe lagging material, be specifically related to the composite modified colloid graphite of a kind of forklift engine vapor pipe-charing foamed phenolic resin base lagging material and preparation method thereof.

Background technology

In the continuous operational process of fork truck, exhaust pipe of engine position can produce a large amount of heat, due to the circulation of heat, finally make Tail Pipe Temperature high, if do not carry out the normal work that heat insulation process will certainly badly influence exhaust system surrounding components, common treatment process is outside vapor pipe, wrap up the insulation plate be made up of the material with effect of heat insulation, the common lagging material of composition insulation plate mainly comprises metal aluminum sheet and woven asbesto, glasscloth etc., but there are some shortcomings in these materials, although such as aluminum effect of heat insulation is better, but production cost is relatively high, unit elongation is limited, and woven asbesto, it is short to there is work-ing life in glasscloth, fragile, inadequate environmental protection, need the shortcomings such as frequent repair and replacement, therefore the more efficient composite heat-insulated material of development one class is badly in need of.

Summary of the invention

The object of the invention is to, the composite modified colloid graphite of a kind of forklift engine vapor pipe-charing foamed phenolic resin base lagging material and preparation method thereof is provided, to improve the defect of traditional insulation materials, reach efficient, environmental protection, economic effect of heat insulation, to achieve these goals, the technical solution used in the present invention is as follows:

A kind of forklift engine vapor pipe composite modified colloid graphite-charing foamed phenolic resin base lagging material, it is characterized in that, material of the present invention is made up of the raw material of following weight part: oildag powder 2-3, aluminum silicate fiber 10-12, W-Gum 3-5, solid content are silicon sol 12-14, the aluminium powder 5-6 of 20-30%, resol 30-40, aluminium triphosphate 1-2, nano-calcium carbonate 5-6, MCMB 4-5, degree Beaume are 40 ° water glass 12-15, sodium laurylsulfonate 0.1-0.2, sodium bicarbonate 0.2-0.3, water 15-20.

The preparation method of the composite modified colloid graphite of described a kind of forklift engine vapor pipe-charing foamed phenolic resin base lagging material, it is characterized in that, its preparation method is as follows:

(1) modified phenolic resins foam micro mist is prepared: dropped into by resol in organic solvent, it is made to dissolve completely, subsequently MCMB is dropped in solution, abundant stirring makes it be uniformly dispersed in the solution, subsequently mixture is carried out foaming process, make modification foam resin, then modified phenolic resins foam is pulverized, making particle diameter is 200-300 object micro mist, to obtain final product;

(2) composite gel Graphite Powder 99 sizing agent is prepared: by oildag powder and water mixed grinding 40-50min, mixed with water glass, silicon sol by gained slurry subsequently, continue to be uniformly mixed, obtain composite gel Graphite Powder 99 sizing agent;

(3) modified phenolic resins foam micro mist is mixed with composite nano-calcium carbonate sizing agent and other remaining component; mix rear feeding and enter compression moulding in mould; again gained model is sent in charring furnace; using nitrogen as shielding gas; with the ramp of 5-8 DEG C/min to 650-750 DEG C, constant temperature 1.5-2h when reaching top temperature, takes out after being cooled to room temperature under nitrogen atmosphere after charing terminates; carry out subsequently cutting, packing, obtain described lagging material.

First to blending, the resol of MCMB to carry out foaming process in the present invention, the modified phenolic resins foam powder carbonization process in follow-up carbonization process prepared like this is more efficient, carbonated material structure is compacted, intensity is higher, thermal conductivity is lower, and not only have good bonding containing the composite gel Graphite Powder 99 sizing agent of silicon sol, forming ability, also be improved charred effect, improve the effects such as material porosity, the material obtained after pyroprocessing has high intensity and toughness, there is lightweight, heat insulation, the advantages such as noise reduction, with thermal baffle prepared by this material, the finished thermal insulation effects such as collet are remarkable, highly efficient durable, effectively improve forklift engine Working environment.

Embodiment

Embodiment

The lagging material of the present embodiment is made up of following raw material: water glass 14, sodium laurylsulfonate 0.1, sodium bicarbonate 0.3, water 18 that the silicon sol 13 that oildag powder 2.5, aluminum silicate fiber 11, W-Gum 4, solid content are 25%, aluminium powder 5, resol 35, aluminium triphosphate 1.5, nano-calcium carbonate 5.5, MCMB 4.5, degree Beaume are 40 °.

The preparation method of the composite modified colloid graphite of described a kind of forklift engine vapor pipe-charing foamed phenolic resin base lagging material is as follows:

(1) modified phenolic resins foam micro mist is prepared: dropped into by resol in organic solvent, it is made to dissolve completely, subsequently MCMB is dropped in solution, abundant stirring makes it be uniformly dispersed in the solution, subsequently mixture is carried out foaming process, make modification foam resin, then modified phenolic resins foam is pulverized, making particle diameter is 300 object micro mists, to obtain final product;

(2) composite gel Graphite Powder 99 sizing agent is prepared: by oildag powder and water mixed grinding 45min, mixed with water glass, silicon sol by gained slurry subsequently, continue to be uniformly mixed, obtain composite gel Graphite Powder 99 sizing agent;

(3) modified phenolic resins foam micro mist is mixed with composite nano-calcium carbonate sizing agent and other remaining component; mix rear feeding and enter compression moulding in mould; again gained model is sent in charring furnace; using nitrogen as shielding gas; with the ramp to 650 DEG C of 5 DEG C/min, constant temperature 2h when reaching top temperature, takes out after being cooled to room temperature under nitrogen atmosphere after charing terminates; carry out subsequently cutting, packing, obtain described lagging material.

It is as follows that material obtained by the present embodiment tests according to relevant criterion the performance index obtained:

Density: 0.96g/cm ³; Porosity 52%; Ultimate compression strength 23.8MPa; Thermal conductivity 0.087W/(m.k), engine room medial temperature reduces by 36.8 DEG C, and noise on average reduces 15dB.

Claims (2)

1. the composite modified colloid graphite of forklift engine vapor pipe-charing foamed phenolic resin base lagging material, it is characterized in that, this lagging material is made up of the raw material of following weight part: oildag powder 2-3, aluminum silicate fiber 10-12, W-Gum 3-5, solid content are silicon sol 12-14, the aluminium powder 5-6 of 20-30%, resol 30-40, aluminium triphosphate 1-2, nano-calcium carbonate 5-6, MCMB 4-5, degree Beaume are 40 ° water glass 12-15, sodium laurylsulfonate 0.1-0.2, sodium bicarbonate 0.2-0.3, water 15-20.

2. the preparation method of the composite modified colloid graphite of a kind of forklift engine vapor pipe as claimed in claim 1-charing foamed phenolic resin base lagging material, it is characterized in that, described preparation method is as follows:

(1) modified phenolic resins foam micro mist is prepared: dropped into by resol in organic solvent, it is made to dissolve completely, subsequently MCMB is dropped in solution, abundant stirring makes it be uniformly dispersed in the solution, subsequently mixture is carried out foaming process, make modification foam resin, then modified phenolic resins foam is pulverized, making particle diameter is 200-300 object micro mist, to obtain final product;

(2) composite gel Graphite Powder 99 sizing agent is prepared: by oildag powder and water mixed grinding 40-50min, mixed with water glass, silicon sol by gained slurry subsequently, continue to be uniformly mixed, obtain composite gel Graphite Powder 99 sizing agent;

(3) modified phenolic resins foam micro mist is mixed with composite nano-calcium carbonate sizing agent and other remaining component; mix rear feeding and enter compression moulding in mould; again gained model is sent in charring furnace; using nitrogen as shielding gas; with the ramp of 5-8 DEG C/min to 650-750 DEG C, constant temperature 1.5-2h when reaching top temperature, takes out after being cooled to room temperature under nitrogen atmosphere after charing terminates; carry out subsequently cutting, packing, obtain described lagging material.