CN105669925A - Preparation method of phenolic resin for manufacturing polishing cloth - Google Patents
Preparation method of phenolic resin for manufacturing polishing cloth Download PDFInfo
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- CN105669925A CN105669925A CN201610100074.1A CN201610100074A CN105669925A CN 105669925 A CN105669925 A CN 105669925A CN 201610100074 A CN201610100074 A CN 201610100074A CN 105669925 A CN105669925 A CN 105669925A
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- Prior art keywords
- parts
- polishing cloth
- resol
- temperature
- manufacture
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Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G8/00—Condensation polymers of aldehydes or ketones with phenols only
- C08G8/04—Condensation polymers of aldehydes or ketones with phenols only of aldehydes
- C08G8/08—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ
- C08G8/20—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with polyhydric phenols
Abstract
The invention discloses a preparation method of phenolic resin for manufacturing polishing cloth. The preparation method comprises the following steps: mixing the following components in parts by weight to form a mixture: 1800 to 2200 parts of bisphenol, 100 to 150 parts of paraformaldehyde, 50 to 80 parts of an organic acid and 500 to 800 parts of toluene; heating the mixture to 60 DEG C to 80 DEG C and stirring; violently releasing heat and stopping heating; after 15 minutes to 25 minutes, automatically raising the temperature to 85 DEG C to 95 DEG C; then starting to cool; reheating to raise the temperature to 98 DEG C to 99 DEG C, and preserving the heat to react for 4.5 hours to 5.5 hours; adding 700 to 900 parts by weight of water and 100 to 160 parts by weight of sodium bicarbonate; neutralizing the unreacted organic acid; after cooling, adding a solvent to dissolve synthesized phenolic resin, and filtering to remove impurities. The phenolic resin prepared by the invention can be used for obviously improving tear-resisting strength, heat resistance, grinding capability and hygroscopicity of the polishing cloth.
Description
Technical field
The present invention relates to polishing cloth field, particularly relate to the preparation technology of a kind of resol for the manufacture of polishing cloth.
Background technology
Common resol reacts under certain condition with formaldehyde by phenol, and its fragility and water absorbability affect the quality of polishing cloth. According to report, polishing cloth adopts phenol-formaldehyde resin that tNonwovens fiber is bonded together mutually substantially, and is bonded on fiber by abrasive material. But the water absorbability of phenol-formaldehyde resin, this is due in phenol-formaldehyde resin caused by phenolic hydroxyl group. If not having phenolic hydroxyl group, so the cohesive force of phenol-formaldehyde resin will affect greatly; Again because phenolic hydroxyl group exists, often make polishing cloth become damp and affect normal use, once did many effort, substitute phenol-formaldehyde resin with multiple similar resin, all there is no successfully. Although the product improved, can be used in specific occasion, but owing to suitable thermotolerance can not be ensured, anti-tear tensile strength and grinding capacity and can not scale of input industrial application.
Summary of the invention
The technical problem that the present invention mainly solves is to provide the preparation technology of a kind of resol for the manufacture of polishing cloth, and the resol of preparation can obviously improve the anti-tear tensile strength of polishing cloth, thermotolerance, grinding capacity and water absorbability.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: the preparation technology providing a kind of resol for the manufacture of polishing cloth, comprises the following steps:
(1) in weight, by 1800 ~ 2200 parts of biphenols, 100 ~ 150 parts of paraformaldehydes, 50 ~ 80 parts of organic acids and 500 ~ 800 parts of toluene composition mixtures, being heated to 60 ~ 80 DEG C, and stir 10 ~ 30 minutes in the process, now heat release is fierce and stops heating;
After (2) 15 ~ 25 minutes, temperature rises to 85 ~ 95 DEG C voluntarily, and temperature starts decline subsequently, then reheats, and makes rise in temperature to 98 ~ 99 DEG C and insulation reaction 4.5 ~ 5.5 hours;
(3) in weight, add 700 ~ 900 parts of water and 100 ~ 160 parts of sodium bicarbonates, neutralize unreacted organic acid;
(4) under pressure, distillation temperature is raised to 110 ~ 130 DEG C, except anhydrating and toluene, after cooling, adds the resol that dissolution with solvents synthesizes, and filters and removes impurity.
In a preferred embodiment of the present invention, the biphenol described in step (1) is 3.3-second diene biphenol.
In a preferred embodiment of the present invention, described organic acid is anhydrous oxalic acid.
In a preferred embodiment of the present invention, in step (4) under 5mm mercurypressure effect, distillation temperature is raised to 110 ~ 130 DEG C.
In a preferred embodiment of the present invention, the solvent described in step (4) is acetone.
The invention has the beneficial effects as follows: resol prepared by the present invention can obviously improve the anti-tear tensile strength of polishing cloth, thermotolerance, grinding capacity and water absorbability.
Embodiment
It is clearly and completely described to the technical scheme in the embodiment of the present invention below, it is clear that described embodiment is only a part of embodiment of the present invention, instead of whole embodiments. Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
For the manufacture of a preparation technology for the resol of polishing cloth, comprise the following steps:
(1) in weight, by 2000 parts of 3.3-second diene biphenols, 130 parts of paraformaldehydes, 62.7 parts of anhydrous oxalic acids and 627 parts of toluene composition mixtures, be heated to 70 DEG C, and stirs 20 minutes in the process, and now heat release is fierce and stops heating;
After (2) 20 minutes, temperature rises to 93 DEG C voluntarily, and temperature starts decline subsequently, then reheats, and makes rise in temperature to 98 ~ 99 DEG C and insulation reaction 5 hours;
(3) in weight, add 800 parts of water and 130 parts of sodium bicarbonates, neutralize unreacted anhydrous oxalic acid;
(4) under 5mm mercurypressure effect, distillation temperature is raised to 120 DEG C, except anhydrating and toluene, after cooling, adds the resol that dissolution with solvents synthesizes, and filters and removes impurity.
Embodiment 2
For the manufacture of a preparation technology for the resol of polishing cloth, comprise the following steps:
(1) in weight, by 1800 parts of 3.3-second diene biphenols, 100 parts of paraformaldehydes, 50 parts of anhydrous oxalic acids and 500 parts of toluene composition mixtures, be heated to 60 DEG C, and stirs 30 minutes in the process, and now heat release is fierce and stops heating;
After (2) 25 minutes, temperature rises to 95 DEG C voluntarily, and temperature starts decline subsequently, then reheats, and makes rise in temperature to 98 ~ 99 DEG C and insulation reaction 4.5 hours;
(3) in weight, add 700 parts of water and 100 parts of sodium bicarbonates, neutralize unreacted anhydrous oxalic acid;
(4) under 5mm mercurypressure effect, distillation temperature is raised to 110 DEG C, except anhydrating and toluene, after cooling, adds the resol that dissolution with solvents synthesizes, and filters and removes impurity.
Embodiment 3
For the manufacture of a preparation technology for the resol of polishing cloth, comprise the following steps:
(1) in weight, by 1800 ~ 2200 parts of 3.3-second diene biphenols, 100 ~ 150 parts of paraformaldehydes, 50 ~ 80 parts of anhydrous oxalic acids and 500 ~ 800 parts of toluene composition mixtures, being heated to 80 DEG C, and stir 10 minutes in the process, now heat release is fierce and stops heating;
After (2) 15 minutes, temperature rises to 85 DEG C voluntarily, and temperature starts decline subsequently, then reheats, and makes rise in temperature to 98 ~ 99 DEG C and insulation reaction 5.5 hours;
(3) in weight, add 900 parts of water and 160 parts of sodium bicarbonates, neutralize unreacted anhydrous oxalic acid;
(4) under 5mm mercurypressure effect, distillation temperature is raised to 130 DEG C, except anhydrating and toluene, after cooling, adds the resol that dissolution with solvents synthesizes, and filters and removes impurity.
The performance detection data of resol prepared by embodiment 1 ~ embodiment 3 is as shown in table 1.
Table 1
| Index | Embodiment 1 | Embodiment 2 | Embodiment 3 |
| Viscosity cps/25 DEG C | 2000-3000 | 900-1500 | 2000-3000 |
| Solid content % | 76-78 | 71-74 | 68-72 |
| PH value | 8-9 | 7-9 | 8-10 |
| Free phenol % | < 2 | < 2.5 | < 2 |
| Water-soluble %/25 DEG C | < 40 | < 30 | < 60 |
| Set time min/150 DEG C | 8-11 | 7-9 | 8-10 |
Resol prepared by the present invention can obviously improve the anti-tear tensile strength of polishing cloth, thermotolerance, grinding capacity and water absorbability.
The foregoing is only embodiments of the invention; not thereby the patent scope of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalence flow process conversion; or directly or indirectly it is used in other relevant technical field, all it is included in the scope of patent protection of the present invention with reason.
Claims (5)
1. the preparation technology for the manufacture of the resol of polishing cloth, it is characterised in that, comprise the following steps:
(1) in weight, by 1800 ~ 2200 parts of biphenols, 100 ~ 150 parts of paraformaldehydes, 50 ~ 80 parts of organic acids and 500 ~ 800 parts of toluene composition mixtures, being heated to 60 ~ 80 DEG C, and stir 10 ~ 30 minutes in the process, now heat release is fierce and stops heating;
After (2) 15 ~ 25 minutes, temperature rises to 85 ~ 95 DEG C voluntarily, and temperature starts decline subsequently, then reheats, and makes rise in temperature to 98 ~ 99 DEG C and insulation reaction 4.5 ~ 5.5 hours;
(3) in weight, add 700 ~ 900 parts of water and 100 ~ 160 parts of sodium bicarbonates, neutralize unreacted organic acid;
(4) under pressure, distillation temperature is raised to 110 ~ 130 DEG C, except anhydrating and toluene, after cooling, adds the resol that dissolution with solvents synthesizes, and filters and removes impurity.
2. the preparation technology of the resol for the manufacture of polishing cloth according to claim 1, it is characterised in that, the biphenol described in step (1) is 3.3-second diene biphenol.
3. the preparation technology of the resol for the manufacture of polishing cloth according to claim 1, it is characterised in that, described organic acid is anhydrous oxalic acid.
4. the preparation technology of the resol for the manufacture of polishing cloth according to claim 1, it is characterised in that, in step (4) under 5mm mercurypressure effect, distillation temperature is raised to 110 ~ 130 DEG C.
5. the preparation technology of the resol for the manufacture of polishing cloth according to claim 1, it is characterised in that, the solvent described in step (4) is acetone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610100074.1A CN105669925A (en) | 2016-02-24 | 2016-02-24 | Preparation method of phenolic resin for manufacturing polishing cloth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610100074.1A CN105669925A (en) | 2016-02-24 | 2016-02-24 | Preparation method of phenolic resin for manufacturing polishing cloth |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105669925A true CN105669925A (en) | 2016-06-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610100074.1A Pending CN105669925A (en) | 2016-02-24 | 2016-02-24 | Preparation method of phenolic resin for manufacturing polishing cloth |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914584A (en) * | 2018-05-15 | 2018-11-30 | 无锡旺绿鸿纺织品有限公司 | A kind of polishing cloth manufacturing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101238178A (en) * | 2005-06-29 | 2008-08-06 | 圣戈本磨料股份有限公司 | High-performance resin for abrasive products |
| CN101497683A (en) * | 2008-02-02 | 2009-08-05 | 中国石油化工集团公司 | Preparation of linear bisphenol A phenolic resin |
| CN101880367A (en) * | 2010-08-03 | 2010-11-10 | 山东圣泉化工股份有限公司 | Method for preparing high-ortho thermoplastic phenolic resin |
| CN103639910A (en) * | 2013-12-04 | 2014-03-19 | 江苏锋芒复合材料科技集团有限公司 | High-accuracy grinding band and manufacturing method thereof |
| CN104511846A (en) * | 2013-11-19 | 2015-04-15 | 东莞金太阳研磨股份有限公司 | Film sandpaper production method |
-
2016
- 2016-02-24 CN CN201610100074.1A patent/CN105669925A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101238178A (en) * | 2005-06-29 | 2008-08-06 | 圣戈本磨料股份有限公司 | High-performance resin for abrasive products |
| CN101497683A (en) * | 2008-02-02 | 2009-08-05 | 中国石油化工集团公司 | Preparation of linear bisphenol A phenolic resin |
| CN101880367A (en) * | 2010-08-03 | 2010-11-10 | 山东圣泉化工股份有限公司 | Method for preparing high-ortho thermoplastic phenolic resin |
| CN104511846A (en) * | 2013-11-19 | 2015-04-15 | 东莞金太阳研磨股份有限公司 | Film sandpaper production method |
| CN103639910A (en) * | 2013-12-04 | 2014-03-19 | 江苏锋芒复合材料科技集团有限公司 | High-accuracy grinding band and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 吴培熙等: "《塑料制品生产工艺手册》", 31 October 2004, 化学工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108914584A (en) * | 2018-05-15 | 2018-11-30 | 无锡旺绿鸿纺织品有限公司 | A kind of polishing cloth manufacturing method |
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Application publication date: 20160615 |
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