CN104944888A

CN104944888A - Composite modified rectorite-carbonized foaming phenolic resin based insulation material for forklift engine exhaust pipe and preparation method of insulation material

Info

Publication number: CN104944888A
Application number: CN201510305156.5A
Authority: CN
Inventors: 彭高峰; 邓广新; 汪兴娟; 刁启元; 张兴军
Original assignee: Hefei Hean Machinery Manufacturing Co Ltd
Current assignee: Hefei Hean Machinery Manufacturing Co Ltd
Priority date: 2015-06-04
Filing date: 2015-06-04
Publication date: 2015-09-30

Abstract

The invention relates to an insulation material for an exhaust pipe, in particular to a composite modified rectorite-carbonized foaming phenolic resin based insulation material for a forklift engine exhaust pipe and a preparation method of the insulation material. During preparation of the insulation material, foaming treatment is conducted on phenolic resin doped with mesocarbon microbeads at first; the obtained modified phenolic resin foam power is more efficient in carbonization in a follow-up carbonization process; the insulation material subjected to carbonization treatment is compact in structure, higher in strength and lower in thermal conductivity coefficient; the insulation material comprises a composite rectorite micro powder adhesive being high in bonding capability, activity and thermal stability, so that the insulation material subjected to high-temperature treatment is prevented from cracking; through adding of activated carbon, the insulation material can adsorb objectionable odor to a certain extent and improve the quality of air in an engine room; the composite insulation material subjected to high-temperature treatment has the advantages of being lightweight, insulated and environmentally friendly; insulation plates, insulation sleeves and other finished products made of the insulation material are excellent in insulation effect, efficient and durable; through the adoption of the insulation material, the working environment of a forklift engine is effectively improved.

Description

A kind of forklift engine vapor pipe composite modified rectorite leng-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 rectorite leng 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 rectorite leng 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 rectorite leng-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: 400-600 order gac micro mist 4-5, polyvinyl alcohol 1-2,300-400 order rectorite leng micro mist 8-10, solid content are silicon sol 8-12, the aluminium powder 4-5 of 20-30%, resol 30-40, aluminium triphosphate 1-2, MCMB 4-5, degree Beaume are 40 ° water glass 16-20, sodium laurylsulfonate 0.1-0.2, sodium bicarbonate 0.2-0.3, water 20-25.

The preparation method of the described composite modified rectorite leng of 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 rectorite micro mist sizing agent is prepared: by rectorite leng micro mist and water mixed grinding 40-50min, mixed with water glass, silicon sol, gac micro mist by gained slurry subsequently, continue to be uniformly mixed, obtain composite rectorite micro mist sizing agent;

(3) modified phenolic resins foam micro mist is mixed with composite rectorite micro mist 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 650-700 DEG C, constant temperature 1-1.5h 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 the composite rectorite micro mist sizing agent viscosifying power containing silicon sol is strong, active high, good heat stability, do not crack after pyroprocessing, the gac added makes material have certain adsorptivity to unpleasant odor, the air of engine room can be improved, the matrix material obtained after charing process has lightweight, heat insulation, the advantages such as environmental protection, 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

The lagging material of the present embodiment is made up of following raw material: water glass 18, sodium laurylsulfonate 0.1, sodium bicarbonate 0.2, water 22 that the silicon sol 10 that 600 order gac micro mists 4.5, polyvinyl alcohol 1.5,400 order rectorite leng micro mist 9, solid content are 25%, aluminium powder 4, resol 35, aluminium triphosphate 1.5, MCMB 4.5, degree Beaume are 40 °.

The preparation method of the described composite modified rectorite leng of 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 rectorite micro mist sizing agent is prepared: by rectorite leng micro mist and water mixed grinding 40min, mixed with water glass, silicon sol, gac micro mist by gained slurry subsequently, continue to be uniformly mixed, obtain composite rectorite micro mist sizing agent;

(3) modified phenolic resins foam micro mist is mixed with composite rectorite micro mist 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 6 DEG C/min, constant temperature 1.5h 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: 0.90g/cm ³; Porosity 56%; Ultimate compression strength 21.4MPa; Thermal conductivity 0.082W/(m.k), engine room medial temperature reduces by 34.2 DEG C.

Claims

1. the composite modified rectorite leng 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: 400-600 order gac micro mist 4-5, polyvinyl alcohol 1-2,300-400 order rectorite leng micro mist 8-10, solid content are silicon sol 8-12, the aluminium powder 4-5 of 20-30%, resol 30-40, aluminium triphosphate 1-2, MCMB 4-5, degree Beaume are 40 ° water glass 16-20, sodium laurylsulfonate 0.1-0.2, sodium bicarbonate 0.2-0.3, water 20-25.

2. the preparation method of the composite modified rectorite leng 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: