CN105860281A - Hard iron-tailing-slag rubber material for boilers - Google Patents

Abstract

The invention discloses a hard iron-tailing-slag rubber material for boilers. The rubber material is prepared from the following raw materials in parts by weight: 4-5 parts of sulfur, 460-500 parts of ethylene propylene terpolymer rubber 4045m, 10-13 parts of microcrystalline cellulose, 2-3 parts of isopropanol, 5-7 parts of maleic anhydride, 0.4-1 part of sulfuric acid of 8% to 10%, 60-70 parts of phenol, 61-70 parts of 37% formaldehyde solution, 0.6-0.8 part of barium hydroxide, 10-12 parts of iron tailing slag powder, 1-3 parts of tetramethoxyl methyl glycoluril, 5-7 parts of magnesium carbonate, 2-3 parts of potassium bromate, 4-6 parts of polybenzimidazole, 1-3 parts of propenol, 2-4 parts of hexamethylphosphoric triamide, 3-5 parts of glycerol monostearate, 73-80 parts of heavy calcium carbonate and 3-4 parts of 2,6-ditert-butyl-para-cresol. According to the hard iron-tailing-slag rubber material for the boilers, the strength and tensile deformation resistance of resin are improved, the iron tailing slag powder is treated and then is mixed with the heavy calcium carbonate so as to prepare filler of the rubber, thus, the production cost is reduced, and the surface hardness of the rubber is improved.

Description

A kind of hard iron tailings slag boiler elastomeric material

Technical field

The invention mainly relates to rubber materials, particularly relate to a kind of hard iron tailings slag boiler elastomeric material.

Background technology

Ethylene propylene diene rubber is ethylene, propylene and the copolymer of a small amount of non-conjugated diene hydrocarbon, it it is the one of EP rubbers, because its main chain is made up of chemically stable saturated hydrocarbons, only containing unsaturated double-bond in side chain, therefore its resistance to ozone, the ageing-resistant performance such as heat-resisting, weather-proof are excellent, can be widely used for the fields such as automobile component, building water-proof material, electric wire and cable jacket, heat-resistant rubber hose, adhesive tape, automotive sealant；

Cellulose has the chemical constitution similar to starch, it it is the natural macromolecular material that synthesized by photosynthesis of plant, it is widely present in plant, in animal and antibacterial, the annual producible cellulose of nature is up to 1010～1011 tons, there is the unrivaled degradability of petrochemicals, recyclability and environment friendly, it is pollution-free to ecological environment, without the preferable green resource destroyed, wherein microcrystalline Cellulose resource has aboundresources, renewable, low cost, density is low, intensity is high, advantages of environment protection, mechanics can be improved in elastomeric material, thermal-oxidative aging property.

Summary of the invention

The object of the invention is just to provide a kind of hard iron tailings slag boiler elastomeric material.

The present invention is achieved by the following technical solutions:

A kind of hard iron tailings slag boiler elastomeric material, it is made up of the raw material of following weight parts:

Sulfur 4-5, ethylene propylene diene rubber 4045m 460-500, microcrystalline Cellulose 10-13, isopropanol 2-3, the sulphuric acid 0.4-1 of maleic anhydride 5-7,8-10%, phenol 60-70,37% formalin 61-70, barium hydroxide 0.6-0.8, iron tailings ground-slag 10-12, tetramethoxymethylglycoluril 1-3, magnesium carbonate 5-7, Potassium bromate. 2-3, polybenzimidazoles 4-6, propenyl 1-3, HMPA 2-4, stearic acid monoglyceride 3-5, ground calcium carbonate 73-80,2,6 ditertiary butyl p cresol 3-4.

The preparation method of a kind of hard iron tailings slag boiler elastomeric material, comprises the following steps:

(1) being joined by microcrystalline Cellulose in 2-3 times of water, add isopropanol, maleic anhydride, be stirring evenly and then adding into the sulphuric acid of 8-10%, react 6-7h in the water-bath of 50-60 DEG C, regulation pH is to neutral, and decompression steams moisture and isopropanol, obtains anhydride cellulose；

(2) HMPA is joined in 3-4 times of water, stirring and dissolving, add propenyl, stearic acid monoglyceride, be heated to 60-70 DEG C, insulated and stirred 2-3 minute, obtain alcohol ester liquid；

(3) phenol is added heat fusing, join in reactor, add barium hydroxide, insulated and stirred 20-30 minute at 70-75 DEG C, add 37% formalin, anhydride cellulose, keep boiling reaction 1-2 hour, add above-mentioned alcohol ester liquid, continue insulation boiling 6-10 minute, reduce temperature and be 60-65 DEG C, decompression dehydration, cooling discharging, obtain anhydride cellulose resin；

(4) iron tailings ground-slag is joined in the sulfuric acid solution of 10-15%, soak 40-50 minute, filter, washing, to dry, mix with magnesium carbonate, heat 6-10 minute at 100-120 DEG C, add ground calcium carbonate, ball milling is uniform；

(5) ethylene propylene diene rubber 4045m, anhydride cellulose resin are mixed with above-mentioned ball milling material, it is subsequently adding Potassium bromate., send in banbury and refine glue 10-15 time, add except 2, each raw material beyond 6-ditertbutylparacresol, sulfur, banburying 3-4 minute at 90-100 DEG C, cooling discharging, parks 20-24 hour, adds and remains each raw material, send in mill, play triangle bag thin logical, bottom sheet, it is rolled into predetermined thickness, using vulcanizing press to carry out sulfidization molding, curing temperature is 135-140 DEG C, sulfide stress 9.5-10Mpa, cure time 15-20min.

The invention have the advantage that

The present invention is by the microcrystalline Cellulose crosslinked action by maleic anhydride, the closest network structure is formed in the phenolic resin that phenol and formaldehyde are formed, well improve intensity and the opposing tensile deformation performance of resin, certain strengthening action is played in elastomeric material, improve anti-deflecting to chap and thermal aging property, the present invention mixes as gum filler with ground calcium carbonate after being processed by iron tailings ground-slag, not only effectively reduces production cost, also improves the case hardness of rubber.

Detailed description of the invention

Embodiment 1:

A kind of hard iron tailings slag boiler elastomeric material, it is characterised in that it is made up of the raw material of following weight parts:

Sulfur 4, ethylene propylene diene rubber 4045m 500, microcrystalline Cellulose 13, isopropanol 3, maleic anhydride 5, the sulphuric acid 0.4-1 of 8-10%, phenol 70,37% formalin 70, barium hydroxide 0.8, iron tailings ground-slag 12, tetramethoxymethylglycoluril 3, magnesium carbonate 5, Potassium bromate. 2-3, polybenzimidazoles 4, propenyl 1, HMPA 4, stearic acid monoglyceride 5, ground calcium carbonate 80,2,6 ditertiary butyl p cresol 4.

The preparation method of a kind of hard iron tailings slag boiler elastomeric material, comprises the following steps:

(1) being joined by microcrystalline Cellulose in 3 times of water, add isopropanol, maleic anhydride, be stirring evenly and then adding into the sulphuric acid of 10%, react 7h in the water-bath of 60 DEG C, regulation pH is to neutral, and decompression steams moisture and isopropanol, obtains anhydride cellulose；

(2) HMPA is joined in 4 times of water, stirring and dissolving, add propenyl, stearic acid monoglyceride, be heated to 70 DEG C, insulated and stirred 2 minutes, obtain alcohol ester liquid；

(3) phenol is added heat fusing, join in reactor, add barium hydroxide, insulated and stirred 30 minutes at 75 DEG C, add 37% formalin, anhydride cellulose, keep boiling reaction 2 hours, add above-mentioned alcohol ester liquid, continue insulation boiling 10 minutes, reducing temperature is 65 DEG C, decompression dehydration, cooling discharging, obtain anhydride cellulose resin；

(4) iron tailings ground-slag is joined in the sulfuric acid solution of 15%, soak 50 minutes, filter, washing, to dry, mix with magnesium carbonate, heat 10 minutes at 120 DEG C, add ground calcium carbonate, ball milling is uniform；

(5) ethylene propylene diene rubber 4045m, anhydride cellulose resin are mixed with above-mentioned ball milling material, it is subsequently adding Potassium bromate., send in banbury and refine glue 15 times, add except 2, each raw material beyond 6-ditertbutylparacresol, sulfur, banburying 3 minutes at 100 DEG C, cooling discharging, parks 24 hours, adds and remains each raw material, send in mill, play triangle bag thin logical, bottom sheet, it is rolled into predetermined thickness, using vulcanizing press to carry out sulfidization molding, curing temperature is 140 DEG C, sulfide stress 9.5Mpa, cure time 20min.

Performance test:

Breaking strength: 14.7Mpa；

Elongation at break: 324%；

150 DEG C × 24h × 25% compression set: 10.3%；

500000 pressure 7 Mpa room temperature long duration tests: pass through；

500000 pressure 7 Mpa high temperature endurance test: pass through；

150 DEG C × 70h air oven aging test:

Breaking strength reduction rate: 4.6%, elongation at break reduction rate: 7.4%.

Claims (2)

1. a hard iron tailings slag boiler elastomeric material, it is characterised in that it is made up of the raw material of following weight parts:

Sulfur 4-5, ethylene propylene diene rubber 4045m 460-500, microcrystalline Cellulose 10-13, isopropanol 2-3, the sulphuric acid 0.4-1 of maleic anhydride 5-7,8-10%, phenol 60-70,37% formalin 61-70, barium hydroxide 0.6-0.8, iron tailings ground-slag 10-12, tetramethoxymethylglycoluril 1-3, magnesium carbonate 5-7, Potassium bromate. 2-3, polybenzimidazoles 4-6, propenyl 1-3, HMPA 2-4, stearic acid monoglyceride 3-5, ground calcium carbonate 73-80,2,6 ditertiary butyl p cresol 3-4.

2. the preparation method of a hard iron tailings slag boiler elastomeric material as claimed in claim 1, it is characterised in that comprise the following steps:

(1) microcrystalline Cellulose is joined in 2-3 times of water, add isopropanol, maleic anhydride, be stirring evenly and then adding into the sulphuric acid of 8-10%, the water-bath of 50-60 DEG C is reacted 6-7h, regulates pH To neutral, decompression steams moisture and isopropanol, obtains anhydride cellulose；

(2) HMPA is joined in 3-4 times of water, stirring and dissolving, add propenyl, stearic acid monoglyceride, be heated to 60-70 DEG C, insulated and stirred 2-3 minute, obtain alcohol ester liquid；

(3) phenol is added heat fusing, join in reactor, add barium hydroxide, insulated and stirred 20-30 minute at 70-75 DEG C, add 37% formalin, anhydride cellulose, keep boiling reaction 1-2 hour, add above-mentioned alcohol ester liquid, continue insulation boiling 6-10 minute, reduce temperature and be 60-65 DEG C, decompression dehydration, cooling discharging, obtain anhydride cellulose resin；

(4) iron tailings ground-slag is joined in the sulfuric acid solution of 10-15%, soak 40-50 minute, filter, washing, to dry, mix with magnesium carbonate, heat 6-10 minute at 100-120 DEG C, add ground calcium carbonate, ball milling is uniform；

(5) ethylene propylene diene rubber 4045m, anhydride cellulose resin are mixed with above-mentioned ball milling material, it is subsequently adding Potassium bromate., send in banbury and refine glue 10-15 time, add except 2, each raw material beyond 6-ditertbutylparacresol, sulfur, banburying 3-4 minute at 90-100 DEG C, cooling discharging, parks 20-24 hour, adds and remains each raw material, send in mill, play triangle bag thin logical, bottom sheet, it is rolled into predetermined thickness, using vulcanizing press to carry out sulfidization molding, curing temperature is 135-140 DEG C, sulfide stress 9.5-10Mpa, cure time 15-20min.