CN106674454A - Powdery phenolic resin for diamond grinding block and preparation method thereof - Google Patents
Powdery phenolic resin for diamond grinding block and preparation method thereof Download PDFInfo
- Publication number
- CN106674454A CN106674454A CN201611261667.2A CN201611261667A CN106674454A CN 106674454 A CN106674454 A CN 106674454A CN 201611261667 A CN201611261667 A CN 201611261667A CN 106674454 A CN106674454 A CN 106674454A
- Authority
- CN
- China
- Prior art keywords
- phenolic resin
- acid catalyst
- parts
- powder body
- grinding block
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- C08G8/10—Condensation polymers of aldehydes or ketones with phenols only of aldehydes of formaldehyde, e.g. of formaldehyde formed in situ with phenol
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/54—Silicon-containing compounds
- C08K5/541—Silicon-containing compounds containing oxygen
- C08K5/5435—Silicon-containing compounds containing oxygen containing oxygen in a ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2361/00—Characterised by the use of condensation polymers of aldehydes or ketones; Derivatives of such polymers
- C08J2361/04—Condensation polymers of aldehydes or ketones with phenols only
- C08J2361/06—Condensation polymers of aldehydes or ketones with phenols only of aldehydes with phenols
Abstract
The invention belongs to the field of phenolic resins, and discloses a powdery phenolic resin for a diamond grinding block. The powdery phenolic resin comprises the following components in parts by weight: 200 parts of phenol, 45-70 parts of formaldehyde, 0.3-1.8 parts of acid catalyst, 8-12 parts of internal lubricant and 0.1-0.5 part of silane coupling agent, wherein the acid catalyst comprises 0.1-0.6 part of strong acid catalyst and 0.2-1.2 parts of weak acid catalyst. The invention also discloses a preparation method of the powdery phenolic resin. The durability of a diamond grinding block prepared from the modified powdery phenolic resin is increased by 15-25%, the grinding efficiency is enhanced by 10-20%, the service life is prolonged, the grindability is excellent, and the water resistance is greatly improved; and the surface roughness value of a workpiece ground by the diamond grinding block is lower.
Description
Technical field
The invention belongs to phenolic resin field, specifically a kind of diamond grinding block powder body phenolic resin and its preparation side
Method.
Background technology
Phenolic resin is widely used in super-hard abrasive tool.The abrading block made by diamond abrasive has excellent grindability
Can, be widely used in grinding technique various aspects, and become superfine grinding, high-efficiency grinding, difficult-to-machine material grinding,
The basis of the technologies such as high accuracy plunge grinding automatization.
Abrading block generally existing Grain Falling Off in the country's is fast at present, and grinding tool autophage is fast, occurs skidding during grinding, it is difficult to reach
Surface roughness requirements.
The technology that diamond grinding block is made using powder body thermoplastic phenolic resin is also ripe.But Buddha's warrior attendant stone grinder is prepared at present
The powder body thermoplastic phenolic resin of block due to its poor water resistance, the low problem of grinding efficiency, most of diamond grinding block factory
Family uses import modified powder phenolic resin, the modified phenolic resin in the urgent need to meeting high-performance diamond abrading block technical requirements
Fat.For this reason, it may be necessary to a kind of new diamond grinding block modified powder phenolic resin is designed, to overcome drawbacks described above.
The content of the invention
The purpose of the present invention is to overcome the deficiencies in the prior art, provides one kind and can improve diamond grinding block ruggedness and mill
Cut the powder body phenolic resin of efficiency.
It is a further object of the present invention to provide the preparation method of the powder body phenolic resin.
To reach one of above-mentioned purpose, the present invention is employed the following technical solutions：
A kind of diamond grinding block powder body phenolic resin, according to parts by weight, its raw material includes following components：200 parts of phenol, first
45~70 parts of aldehyde, 0.3~1.8 part of acid catalyst, 8 ~ 12 parts of in-lubricant, 0.1~0.5 part of silane coupler, the acid catalysiss
Agent includes 0.2~1.2 part of 0.1~0.6 part of strong acid catalyst and weak acid catalyst.
Further, the raw material of powder body phenolic resin includes following components：200 parts of phenol, 58 parts of formaldehyde, acid catalyst
1.2 parts, 10 parts of in-lubricant, 0.3 part of silane coupler, the acid catalyst include that 0.4 part of strong acid catalyst and weak acid are catalyzed
0.8 part of agent.
Further, the strong acid catalyst is hydrochloric acid.
Further, the weak acid catalyst is oxalic acid or silicic acid.
Further, the in-lubricant is ethylene bis stearamide.
Further, the silane coupler trade mark is A-187.
A kind of preparation method of above-mentioned powder body phenolic resin, comprises the following steps：
S1, by phenol, formaldehyde add reactor in, stir 20~30min, by strong acid catalyst add reactor in, stirring, rise
Temperature is to seething with excitement and react 15~30min；
S2, addition weak acid catalyst, holding seethe with excitement and react 60~120min；
S3, decompression dehydration are 0.07~0.09MPa to vacuum, when dehydrated material temperature reaches 150~190 DEG C, are stopped de-
Water, is cooled to 120~150 DEG C, adds in-lubricant, after 10~20min of stirring, adds silane coupler, after 30~50min
Bottom valve is opened, blowing, cooling are obtained final product.
Further, the method is further comprising the steps of：After step s 3, the phenolic resin that will be cooled to room temperature is crushed
Into the bulk of 10~20mm of diameter, then according to 8~13% addition hexamethylenamine of phenolic resin quality, are ground on 200 mesh sieves
Thing is not higher than the powder body phenolic resin of 5% granularity.
The invention has the advantages that：
The present invention adds acid catalyst stage by stage, while intrinsic toughening agent and silane coupler modified is added, it is good to obtain ruggedness
The powder body phenolic resin high with grinding efficiency.Gained powder body phenolic resin can substitute existing phenolic resin, not change Buddha's warrior attendant
Under conditions of stone grinder block manufacturing process, as powder body phenolic resin toughness is lifted, molecular weight dispersion coefficient increases, production preferably
Diamond grinding block；The diamond grinding block ruggedness made with modified powder phenolic resin of the present invention improves 15~25%, grinding effect
Rate lifts 10~20%, and service life extends, and grinding performance is excellent, and resistance to water there has also been very big raising, diamond grinding block grinding
The workpiece surface roughness numerical value for going out is lower.
Specific embodiment
With reference to specific embodiment, the present invention is described further.
The number of following examples refers both to weight portion.
Embodiment 1
Powder body phenolic resin is prepared according to following steps：
1st, in 200 parts of phenol, 58 parts of formaldehyde being added with agitator, condenser, the reactor of temperature measuring equipment, stir
26min, 0.4 part of hydrochloric acid is added in reactor, and stirring is warming up to boiling, under the conditions of boiling temperature is kept reacts 24min；
2nd, 0.8 part of oxalic acid is added, under the conditions of keeping boiling temperature, reacts 90min；
3rd, decompression dehydration is 0.08MPa to vacuum, when dehydrated material temperature reaches 170 DEG C, stops dehydration, is cooled to 140
DEG C, 10 parts of ethylene bis stearamides are added, after stirring 15min, 0.3 part of silane coupling A -187 is added, is opened after 40min
Bottom valve, blowing, cooling；
4th, the phenolic resin that will be cooled to room temperature is broken into the bulk of 10~20mm of diameter, then according to phenolic resin quality
10% adds hexamethylenamine, while the powder body phenol that 200 mesh oversizes are not higher than 5% granularity is ground in sending into high speed jet mill
Urea formaldehyde.
Embodiment 2
Powder body phenolic resin is prepared according to following steps：
1st, in 200 parts of phenol, 47 parts of formaldehyde being added with agitator, condenser, the reactor of temperature measuring equipment, stir
20min, 0.2 part of hydrochloric acid is added in reactor, and stirring is warming up to boiling, under the conditions of boiling temperature is kept reacts 17min；
2nd, 0.3 part of oxalic acid is added, under the conditions of keeping boiling temperature, reacts 60min；
3rd, decompression dehydration is 0.09MPa to vacuum, when dehydrated material temperature reaches 160 DEG C, stops dehydration, is cooled to 120
DEG C, 8 parts of ethylene bis stearamides are added, after stirring 20min, 0.1 part of silane coupling A -187 is added, after 50min, is opened bottom
Valve, blowing, cooling；
4th, the phenolic resin that will be cooled to room temperature is broken into the bulk of 10~20mm of diameter, then according to the 8% of phenolic resin quality
Hexamethylenamine is added, while the powder body phenolic aldehyde that 200 mesh oversizes are not higher than 5% granularity is ground in sending into high speed jet mill
Resin.
Embodiment 3
Powder body phenolic resin is prepared according to following steps：
1st, in 200 parts of phenol, 68 parts of formaldehyde being added with agitator, condenser, the reactor of temperature measuring equipment, stir
28min, 0.6 part of hydrochloric acid is added in reactor, and stirring is warming up to boiling, under the conditions of boiling temperature is kept reacts 30min；
2nd, 1.1 parts of silicic acid are added, under the conditions of keeping boiling temperature, reacts 120min；
3rd, decompression dehydration is 0.07MPa to vacuum, when dehydrated material temperature reaches 180 DEG C, stops dehydration, is cooled to 150
DEG C, 12 parts of ethylene bis stearamides are added, after stirring 10min, 0.5 part of silane coupling A -187 is added, is opened after 30min
Bottom valve, blowing, cooling；
4th, the phenolic resin that will be cooled to room temperature is broken into the bulk of 10~20mm of diameter, then according to phenolic resin quality
12% adds hexamethylenamine, while the powder body phenol that 200 mesh oversizes are not higher than 5% granularity is ground in sending into high speed jet mill
Urea formaldehyde.
Comparative example 1
Preparation method is substantially the same manner as Example 1, but is added without ethylene bis stearamide.
Comparative example 2
Preparation method is substantially the same manner as Example 1, but is added without silane coupling A -187.
Comparative example 3
Preparation method is substantially the same manner as Example 1, but is added without ethylene bis stearamide and silane coupling A -187.
Performance test
Embodiment 1 ~ 3, the phenolic resin of comparative example 1 ~ 3 and diamond, adjuvant etc. are made into diamond grinding block, is closed with YG8 hard
Metal working part is Material Processing, and test performance is as a result as shown in the table：
| The abrading block life-span（Ten thousand m2/mm） | Grinding ratio | Processing workpiece roughness（μm） | |
| Embodiment 1 | 2.1 | 54 | 0.30 |
| Embodiment 2 | 1.8 | 51 | 0.32 |
| Embodiment 3 | 1.9 | 52 | 0.31 |
| Comparative example 1 | 1.6 | 42 | 0.36 |
| Comparative example 2 | 1.6 | 45 | 0.35 |
| Comparative example 3 | 1.4 | 40 | 0.40 |
Knowable to test, the diamond grinding block service life obtained by the phenolic resin of the present invention increases, grinding performance（Grinding
Than）Lifted, it is lower to process the workpiece surface roughness numerical value that obtains, wherein, the Buddha's warrior attendant that the powder body phenolic resin of embodiment 1 is obtained
Stone grinder block combination property is optimum.
The above, the only specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, any
Belong to those skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in all are answered
It is included within the scope of the present invention.Therefore, protection scope of the present invention should be defined by scope of the claims.
Claims (8)
1. a kind of diamond grinding block powder body phenolic resin, it is characterised in that according to parts by weight, its raw material is included with the following group
Point：200 parts of phenol, 45~70 parts of formaldehyde, 0.3~1.8 part of acid catalyst, 8 ~ 12 parts of in-lubricant, silane coupler 0.1~
0.5 part, the acid catalyst includes 0.2~1.2 part of 0.1~0.6 part of strong acid catalyst and weak acid catalyst.
2. powder body phenolic resin according to claim 1, it is characterised in that raw material includes following components：200 parts of phenol,
58 parts of formaldehyde, 1.2 parts of acid catalyst, 10 parts of in-lubricant, 0.3 part of silane coupler, the acid catalyst includes strong acid catalyst
0.8 part of 0.4 part of agent and weak acid catalyst.
3. powder body phenolic resin according to claim 1, it is characterised in that the strong acid catalyst is hydrochloric acid.
4. powder body phenolic resin according to claim 1, it is characterised in that the weak acid catalyst is oxalic acid or silicic acid.
5. powder body phenolic resin according to claim 1, it is characterised in that the in-lubricant is ethylene stearic bicine diester
Amine.
6. powder body phenolic resin according to claim 1, it is characterised in that the silane coupler trade mark is A-187.
7. the preparation method of the powder body phenolic resin according to claim 1 ~ 6 any one, it is characterised in that including following
Step：
S1, by phenol, formaldehyde add reactor in, stir 20~30min, by strong acid catalyst add reactor in, stirring, rise
Temperature is to seething with excitement and react 15~30min；
S2, addition weak acid catalyst, holding seethe with excitement and react 60~120min；
S3, decompression dehydration are 0.07~0.09MPa to vacuum, when dehydrated material temperature reaches 150~190 DEG C, are stopped de-
Water, is cooled to 120~150 DEG C, adds in-lubricant, after 10~20min of stirring, adds silane coupler, after 30~50min
Bottom valve is opened, blowing, cooling are obtained final product.
8. preparation method according to claim 7, it is characterised in that the method is further comprising the steps of：Step S3 it
Afterwards, the phenolic resin that will be cooled to room temperature is broken into the bulk of 10~20mm of diameter, then according to the 8 of phenolic resin quality~
13% adds hexamethylenamine, is ground into the powder body phenolic resin that 200 mesh oversizes are not higher than 5% granularity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261667.2A CN106674454A (en) | 2016-12-30 | 2016-12-30 | Powdery phenolic resin for diamond grinding block and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261667.2A CN106674454A (en) | 2016-12-30 | 2016-12-30 | Powdery phenolic resin for diamond grinding block and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106674454A true CN106674454A (en) | 2017-05-17 |
Family
ID=58848889
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611261667.2A Pending CN106674454A (en) | 2016-12-30 | 2016-12-30 | Powdery phenolic resin for diamond grinding block and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN106674454A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112029232A (en) * | 2020-09-18 | 2020-12-04 | 珠海邦瑞合成材料有限公司 | Secondary modified powdery phenolic resin and preparation method and application thereof |
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|---|---|---|---|---|
| CN112029232A (en) * | 2020-09-18 | 2020-12-04 | 珠海邦瑞合成材料有限公司 | Secondary modified powdery phenolic resin and preparation method and application thereof |
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Application publication date: 20170517 |
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