CN1137242C - Process for preparing asphalt impregnant by co-charring furan resin - Google Patents
Process for preparing asphalt impregnant by co-charring furan resin Download PDFInfo
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- CN1137242C CN1137242C CNB001247395A CN00124739A CN1137242C CN 1137242 C CN1137242 C CN 1137242C CN B001247395 A CNB001247395 A CN B001247395A CN 00124739 A CN00124739 A CN 00124739A CN 1137242 C CN1137242 C CN 1137242C
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Abstract
The present invention relates to a method for producing a bitumen impregnating agent by the cocarbonization of furan resin. 100 weight portions of coal tar bitumen sold on the market react with 1 to 15 weight portions of furan resin as a cocarbonization agent for 5 to 20 hours at a thermal polycondensation temperature of 360 to 450 DEG C under autogenous pressure. The bitumen impregnating agent with a low softening point and a high carbon yield can be obtained.
Description
The present invention relates to a kind of asphalt impregnant production method, specifically adopt the method for thermoplasticity furane resin and industrial viscid bitumen preparing asphalt impregnant by co-charring.
The base substrate of raw material of wood-charcoal material or the density of elementary formed material are lower, and correlated performance does not also reach actual service requirements, usually need to take certain process means to improve the density of material, and adopting bituminizing is exactly one of means commonly used at present.During dipping-charing, the charing residual quantity of asphalt impregnant (can represent with charcoal yield) is the principal element of decision density reinforcement efficient, and the charcoal yield after the asphalt impregnant charing is high more, and the density effect is good more.Academia and industry member make great efforts to improve density efficient by the intrinsic charcoal yield that improves asphalt impregnant always, the means that adopted mainly are to bituminous direct heat polycondensation modification (coal-tar pitch, the Fei Yepuliwaluofu work, Jilin Carbon Factory translates, nineteen eighty-three, the approval of Jilin cultural department), the direct heat polycondensation makes the asphaltene molecule condensation exactly under high temperature (350-450 ℃), improve charcoal yield by improving the pitch condensation degree, but, when improving charcoal yield, also improve the bituminous softening temperature, reduced the flowability under the molten state, thereby dipping gaining effect variation.And because pitch is the compound that multiple condensed aromatics compound is formed, and its composition and primary source and production technique are closely related, and these bituminous thermal polycondensations are subjected to the restriction of their The Nomenclature Composition and Structure of Complexes, charcoal yield and flowability are difficult to reach optimum matching.
The objective of the invention is to develop a kind of method of producing asphalt impregnant, described asphalt impregnant had both had high charcoal yield when being used for the impregnation technology of carbon material, good flowability is arranged again.
The object of the present invention is achieved like this: commercially available coal-tar pitch and commercially available industrial furane resin (as the product of Shanxi Jin Fen resin processing plant) change the bituminous performance by charing altogether.
Concrete method is as follows:
1. industrial coal-tar pitch parts by weight are 100 parts, and normal temperature is 1-15 part for liquid industrial furane resin parts by weight down, mixes;
2. be total to carbonization temperature 360-450 ℃, under autogenous pressure, the reaction times is 5-20 hour;
3. adopt the method for GB-2294-80 to measure gained bituminous softening temperature, adopt the method for GB-8728-89 to measure charcoal yield.
Described pitch softening point is lower than 70 ℃, when the pitch parts by weight were 100 parts, the parts by weight of described furane resin were preferably 3-10 part, and charing pressure is normal pressure or pressurization altogether, temperature is preferably in 400-430 ℃, and the reaction times decides according to target pitch softening point and temperature of reaction.
It is common carbonized agent that the present invention adopts furane resin, by the supplementary function to the asphalt stock The Nomenclature Composition and Structure of Complexes, through further thermal polycondensation modification, makes the charcoal yield of dipping agent bitumen and mobile coupling reach best effect.Can overcome the deficiency of material asphalt structure and composition like this, and with merely resin and pitch are mixed the method that improves charcoal yield and compare that (resin adds part by weight 40-60%, Carbon-carbon Materials and Composites ed.By John D.Buckley, Dan D. Edie, PARK RIDGE, Nj:Noyes Publication, 1993, pp.110-120), the resin adding proportion is little, and is little to the negative impact of product properties thereafter.
The dipping agent bitumen that adopts the present invention to produce is compared with the mill retting agent pitch of present use, has under the situation of identical charcoal yield, and dipping agent bitumen of the present invention has better flowability.Fig. 1 is the temperature flowing curve of producing charcoal-carbon composite common used in industry modified coal pitch and adopting the dipping agent bitumen of the present invention's production.As shown in Figure 1, abscissa be the residing temperature of soaker (℃), ordinate is the viscosity of soaker, unit is pool, Δ---is industrial coal-tar pitch soaker, *---and is the asphalt impregnant after the charing altogether.Be at 57.5% o'clock at charcoal yield, be starkly lower than the viscosity of coal-tar pitch according to the asphalt high-temperature viscosity of the present invention's production.
The asphalt impregnant that the present invention produces can be used for also can being used for the production of charcoal-carbon composite in the dipping thickening technology of industrial electrode and graphite material.
In sum, the asphalt impregnant carbonization degree height after the common charing, softening temperature is low, and the two reaches optimum matching.
Embodiments of the invention are as follows:
Embodiment 1
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 1.5 grams 400 ℃ of thermal polycondensations of temperature 10 hours, obtain 85 ℃ of pitch softening points, charcoal yield 50.5%.
Embodiment 2
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 3.0 grams 400 ℃ of thermal polycondensations of temperature 10 hours, obtain 96 ℃ of pitch softening points, charcoal yield 58.5%.
Embodiment 3
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 5.0 grams 400 ℃ of thermal polycondensations of temperature 10 hours, obtain 109 ℃ of pitch softening points, charcoal yield 63.2%.
Embodiment 4
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 7.0 grams 400 ℃ of thermal polycondensations of temperature 10 hours, obtain 132 ℃ of pitch softening points, charcoal yield 67.7%.
Embodiment 5
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 10.0 grams 400 ℃ of thermal polycondensations of temperature 10 hours, obtain 148 ℃ of pitch softening points, charcoal yield 70.2%.
Embodiment 6
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 13.0 grams 400 ℃ of thermal polycondensations of temperature 10 hours, obtain 156 ℃ of pitch softening points, charcoal yield 73.5%.
Embodiment 7
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 1.5 grams 420 ℃ of thermal polycondensations of temperature 10 hours, obtain 95 ℃ of pitch softening points, charcoal yield 57.5%.
Embodiment 8
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 3.0 grams 420 ℃ of thermal polycondensations of temperature 10 hours, obtain 105 ℃ of pitch softening points, charcoal yield 61.2%.
Embodiment 9
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 5.0 grams 420 ℃ of thermal polycondensations of temperature 10 hours, obtain 117 ℃ of pitch softening points, charcoal yield 64.8%.
Embodiment 10
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 7.0 grams 420 ℃ of thermal polycondensations of temperature 10 hours, obtain 125 ℃ of pitch softening points, charcoal yield 70.2%.
Embodiment 11
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 10.0 grams 420 ℃ of thermal polycondensations of temperature 10 hours, obtain 134 ℃ of pitch softening points, charcoal yield 71.4%.
Embodiment 12
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 5.0 grams 380 ℃ of thermal polycondensations of temperature 15 hours, obtain 96 ℃ of pitch softening points, charcoal yield 55.3%.
Embodiment 13
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 3.0 grams 430 ℃ of thermal polycondensations of temperature 10 hours, obtain 122 ℃ of pitch softening points, charcoal yield 65.9%.
Embodiment 14
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 1.0 grams 450 ℃ of thermal polycondensations of temperature 5 hours, obtain 122 ℃ of pitch softening points, charcoal yield 66.4%.
Embodiment 15
Get 68 ℃ of softening temperatures industry coal-tar pitch, 100 grams, furane resin 15.0 grams 360 ℃ of thermal polycondensations of temperature 20 hours, obtain 92 ℃ of pitch softening points, charcoal yield 55.9%.
Claims (3)
1. the method for a preparing asphalt impregnant by co-charring furan resin, it is characterized in that it is 100 parts that softening temperature is lower than 70 ℃ coal-tar pitch parts by weight, normal temperature is 1-15 part for liquid common carbonized agent furane resin parts by weight down, after the mixing, charing altogether under 360-450 ℃ and autogenous pressure, 5-20 hour.
2. the method for claim 1 is characterized in that the parts by weight that furane resin add are 3-10 part.
3. method as claimed in claim 1 or 2, it is characterized in that what common charing was carried out under normal pressure or pressurized conditions, carbonization temperature is at 400-430 ℃ altogether, and the reaction times from 5 hours to 20 hours, the concrete time should decide according to target bituminous softening temperature and temperature of reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001247395A CN1137242C (en) | 2000-09-14 | 2000-09-14 | Process for preparing asphalt impregnant by co-charring furan resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB001247395A CN1137242C (en) | 2000-09-14 | 2000-09-14 | Process for preparing asphalt impregnant by co-charring furan resin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1304977A CN1304977A (en) | 2001-07-25 |
| CN1137242C true CN1137242C (en) | 2004-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB001247395A Expired - Fee Related CN1137242C (en) | 2000-09-14 | 2000-09-14 | Process for preparing asphalt impregnant by co-charring furan resin |
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| CN (1) | CN1137242C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111423592A (en) * | 2020-04-10 | 2020-07-17 | 中国科学院山西煤炭化学研究所 | Preparation method of low-viscosity high-carbon-residue-rate binder asphalt for carbon materials |
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- 2000-09-14 CN CNB001247395A patent/CN1137242C/en not_active Expired - Fee Related
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| Publication number | Publication date |
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| CN1304977A (en) | 2001-07-25 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040204 Termination date: 20100914 |