WO2023092259A1 - Porous phenolic bakelite cage material and preparation method therefor, and bearing cage - Google Patents

Porous phenolic bakelite cage material and preparation method therefor, and bearing cage Download PDF

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Publication number
WO2023092259A1
WO2023092259A1 PCT/CN2021/132326 CN2021132326W WO2023092259A1 WO 2023092259 A1 WO2023092259 A1 WO 2023092259A1 CN 2021132326 W CN2021132326 W CN 2021132326W WO 2023092259 A1 WO2023092259 A1 WO 2023092259A1
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Prior art keywords
bakelite
preparation
cage material
porous
cage
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PCT/CN2021/132326
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French (fr)
Chinese (zh)
Inventor
张素娥
孙小波
席博伦
李媛媛
田本州
闫玉杰
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洛阳轴承研究所有限公司
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Priority to PCT/CN2021/132326 priority Critical patent/WO2023092259A1/en
Priority to CN202180102215.2A priority patent/CN117980614A/en
Publication of WO2023092259A1 publication Critical patent/WO2023092259A1/en

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/38—Ball cages
    • F16C33/44—Selection of substances

Definitions

  • the invention relates to a porous phenolic bakelite cage material, a preparation method thereof, and a bearing cage, belonging to the technical field of bearing cages.
  • the porous phenolic wood cage material has a unique microporous structure, and the microporous spaces are filled with lubricating oil and connected to each other through the capillary channels of cotton fibers.
  • the internal pressure is generated by the centrifugal force generated by the bearing operation, heat and the surface tension of the oil, so that the lubricating oil stored in the porous phenolic bakelite cage flows in and out, so that the cage can be used in the friction zone of the bearing.
  • bearing systems that can only use cage one-time thin oil lubrication technology are widely used.
  • the oil supply rate of the cage material depends on the material's pore size, porosity, kinematic viscosity of the lubricating oil, and bearing operating speed, among others.
  • the pore size and porosity of the cage material are determined by the preparation process of the material. If the pore size and porosity are too large, too much oil will flow out, which will reduce the accuracy and life; if the pore size and porosity are too small, the oil will flow too much. If less, the bearing cannot be well lubricated, which may lead to reduced reliability and life.
  • the pore diameter and porosity control accuracy of the porous phenolic bakelite cage material largely determine the accuracy and life of the bearing.
  • the document number is CN100570165C
  • Chinese invention patent discloses a manufacturing method of porous phenolic tape laminated cage material for rolling bearings.
  • the tape laminated cage material is pre-impregnated with a foaming agent, and the foaming agent is used in the resin curing process. It is manufactured by the method of foaming and forming holes; the manufacturing method is made into high-porosity and oil-containing porous materials through five manufacturing processes: phenolic resin preparation, foaming agent preparation, cotton cloth impregnated with foaming agent and phenolic resin, winding molding, and post-curing. Phenolic tape laminated cage material.
  • This cage material is a modified phenolic laminate material with high porosity, but the radial tensile strength is low, which cannot meet the requirements of use, and the pore diameter dispersion is large, and the pore performance is poor, which affects the bearing operation. precision and longevity.
  • the purpose of the present invention is to provide a preparation method of a porous phenolic bakelite cage material, which can improve the pore performance and radial tensile strength of the porous phenolic bakelite cage material.
  • the present invention also provides a porous phenolic bakelite cage material prepared by the method for preparing the porous phenolic bakelite cage material and a bearing cage prepared by using the porous phenolic bakelite cage material.
  • the technical scheme adopted in the preparation method of the porous phenolic bakelite cage material of the present invention is:
  • a method for preparing a porous phenolic bakelite cage material comprising the following steps: providing adhesive plaster, the adhesive plaster includes cotton cloth and a chemical foaming system and resole phenolic resin impregnated on the cotton cloth; drying the adhesive plaster until the soluble resin The content is 80-95%, and then it is wound into a tubular or ring shape, and then cured to obtain the final product; the curing treatment is to firstly keep warm at 80°C-90°C for 1-2 hours, and then keep warm at 100°C-110°C for 1 hour. ⁇ 2h, then keep warm at 120°C ⁇ 130°C for 1 ⁇ 2h, and finally keep warm at 140°C ⁇ 150°C for 4 ⁇ 6h.
  • the resole phenolic resin is polycondensed into a B-stage phenolic resin.
  • the foaming agent component of the foaming system decomposes into gas, the resin solidifies into an insoluble and infusible acrylic phenolic resin, and the encapsulating gas becomes a porous thermosetting laminate.
  • the foaming component of the chemical foaming agent decomposes, and the bubbles are generated when the resin has been cross-linked to an elastic body but not hardened, so that the purpose of forming holes can be achieved. If it is too late, it will not be possible to foam and form holes. If the resin melts and flows too early, the pores will be too large, which will easily cause a large area of resin loss and reduce the strength of the product.
  • the preparation method of the porous phenolic bakelite cage material of the present invention can not only significantly improve the friction performance of the material, but also control the degree of polymerization of the B-stage phenolic resin, the degree of curing of the adhesive tape after drying, and the curing conditions. Moreover, the pore properties of the prepared porous phenolic bakelite cage material are effectively and stably controlled, the pore size distribution is narrow, the oil retention rate is high, the lubrication performance of the corresponding oil cage is more effective and durable, and the radial stretch of the cage material is greatly improved. strength.
  • the cage material with pore performance meeting the standard can be obtained, that is, the pore diameter is 1 ⁇ m-5 ⁇ m, the porosity is 10%-20%, and the pass rate is above 95%.
  • the preparation method of the porous phenolic bakelite cage material of the present invention has a stable and controllable process, high product performance consistency and strong reproducibility, and is suitable for industrial mass production.
  • the weight average molecular weight of the resole phenolic resin is 200-600, for example 320-560.
  • the specific gravity of the resole phenolic resin is 1.050-1.070, such as 1.054-1.068.
  • the viscosity of the resole phenolic resin is 16-20s, for example, 16-18s.
  • the weight-average molecular weight of the resole phenolic resin in the present invention is determined according to SH/T1759-2007 "Determination of Molecular Weight Distribution of Solution Polymers by Gel Permeation Chromatography".
  • the specific gravity of the resole phenolic resin in the present invention is measured by a hydrometer.
  • the viscosity of the resole phenolic resin in the present invention is measured by coating-4 viscometer.
  • the time for keeping the temperature at 140-150° C. is 4-5 hours.
  • the adhesive plaster is dried at 30° C. to 60° C., 80° C. to 100° C., and 90° C. to 110° C. sequentially.
  • the adhesive tape is dried at 40°C-60°C, 80°C-100°C, and 100°C-110°C in sequence.
  • the mass percentage of glue in the adhesive cloth after drying treatment is 42-52%, for example 43%.
  • the adhesive plaster is prepared by a method comprising the following steps: sequentially impregnating the cotton cloth in a chemical foaming system impregnation solution and a resole phenolic resin glue solution.
  • the resole phenolic resin glue solution is mainly obtained by mixing a resole phenolic resin and an alcoholic solvent; the alcoholic solvent and the resole phenolic resin are 20-50% by weight, for example, 26-42%.
  • the alcoholic solvent is preferably ethanol.
  • the specification of the cotton cloth is not limited in the present invention, for example, the yarn fineness of the cotton cloth is above 40N. Specifically, for example, the yarn fineness of the cotton cloth is 40N, 60N, 80N, 100N or 120N.
  • the cotton cloth is plain cotton cloth (plain cotton cloth) or twill cotton cloth.
  • the foaming temperature of the chemical foaming system is 80°C to 130°C.
  • the chemical foaming system includes a chemical foaming agent and a foaming aid.
  • Foaming aids are used as decomposition aids for chemical blowing agents to adjust the decomposition temperature of chemical blowing agents. It can be understood that when the foaming temperature of the chemical foaming system is 80°C to 130°C, the foaming aid is used to adjust the decomposition temperature of the chemical foaming agent to be 80°C to 130°C.
  • the chemical foaming agent is selected from azobisisobutyronitrile (AIBN), azodicarbonamide (foaming agent AC), N,N'-dinitrosopentamethylenetetramine (foaming agent One or any combination of foaming agent DPT), 4,4'-oxobisbenzenesulfonyl hydrazide (foaming agent OBSH).
  • the foaming aid is selected from one or any combination of sodium bicarbonate, ammonium carbonate, zinc oxide, zinc stearate, ammonium nitrite, salicylic acid, benzoic acid, and carbonamide. Furthermore, the foaming aid is preferably carbonamide and/or benzoic acid.
  • the chemical foaming agent is N,N'-dinitrosopentamethylenetetramine and/or 4,4'-oxobisbenzenesulfonyl hydrazide
  • the foaming aid is carbon Amides and/or Benzoic Acids.
  • the mass ratio of the chemical foaming agent to the foaming aid is (1.5-2.5):1, for example, 1.5-2.1:1.
  • the chemical foaming agent is N,N'-dinitrosopentamethylenetetramine, and the foaming aid is carbonamide; or the chemical foaming agent is 4,4' -Oxybisbenzenesulfonyl hydrazide, the foaming aid is benzoic acid.
  • Adjusting the mass ratio of chemical foaming agent to foaming aid to (1.5-2.5):1 can reduce the decomposition temperature of chemical foaming agent to 80°C-130°C, and ensure that the decomposition and foaming temperature is within the crosslinking temperature range of phenolic resin Internally, the decomposition and foaming of the chemical blowing agent and the cross-linking and curing of the phenolic resin can be carried out simultaneously, effectively curing the bubbles, and making the uniformity of the pore size tend to be consistent.
  • the impregnating liquid of the chemical foaming system includes chemical foaming agent, foaming aid and solvent.
  • the solvent is an alcohol solvent and/or a ketone solvent.
  • the volume of the solvent used per 1 g of the foaming aid is preferably 40 to 100 mL.
  • the alcoholic solvent is preferably ethanol.
  • the ketone solvent is preferably acetone.
  • the dipping solution of the chemical foaming agent system is obtained by mixing a chemical foaming agent solution and a foaming aid solution, and the volume ratio of the foaming agent solution to the foaming aid solution is 2.2-3:1.
  • the chemical foaming agent is N, N'-dinitrosopentamethylenetetramine, and when the foaming aid is carbonamide, the solvent of the chemical foaming agent solution is a ketone Solvent, the solvent of the foaming aid is an alcohol solvent.
  • the chemical foaming agent is 4,4'-oxobisbenzenesulfonyl hydrazide, and when the foaming aid is benzoic acid, the solvent of the chemical foaming agent solution is an alcohol solvent, and the foaming aid
  • the solvent of the agent is an alcoholic solvent.
  • the resole phenolic resin is prepared by a method comprising the following steps: reacting phenol and formaldehyde at a molar ratio of 1:1.1 to 1.2 at a temperature of 60°C to 80°C under the action of a basic catalyst for 60 to 90 minutes, dehydration, that is. Further preferably, the phenol and formaldehyde are reacted at 60-70° C. for 70-90 minutes.
  • the dehydration is vacuum dehydration.
  • the basic catalyst is a weakly basic catalyst.
  • the weakly basic catalyst is one or any combination of aluminum hydroxide, copper hydroxide, iron hydroxide, zinc hydroxide, and ammonia monohydrate.
  • the amount of the basic catalyst used is 0.3-0.8%, for example 0.4%, of the mass of phenol.
  • the above curing treatment can fully melt the resin, increase the cross-linking solidification density, and thereby enhance the mechanical properties of the cage material.
  • the time for heating to 80° C. to 90° C. is 20 minutes to 50 minutes, for example, 25 to 40 minutes.
  • the heating time it can ensure that the material to be cured is heated evenly, foaming and curing are carried out simultaneously, the resin is fully cross-linked and cured, and the necessary strength index is ensured while forming holes.
  • the time for heating from 80-90°C to 100-110°C is 10min-20min.
  • the time for heating from 100-110°C to 120-130°C is 10min-20min.
  • the time for heating from 120°C to 130°C to 140°C to 150°C is 10min to 20min.
  • the technical scheme adopted by the porous phenolic bakelite cage material of the present invention is:
  • a porous phenolic bakelite cage material prepared by the above-mentioned preparation method of the porous phenolic bakelite cage material.
  • the porous phenolic bakelite cage material of the present invention is prepared by the above-mentioned porous phenolic bakelite cage material preparation method, has the advantages of light weight, high specific strength, good impact resistance, good wear resistance, and oil-containing self-lubrication, and can be widely used It is applied to precision bearings such as gyroscope ball bearings and other high-end high-speed precision civilian bearings. Especially under the condition that the bearings cannot be maintained, the bearing itself is lubricated in the form of one-time lubrication to achieve high reliability, high precision, low friction, and long life. The purpose of life is to replace imports, and has good social and economic benefits.
  • the porous phenolic bakelite cage material of the present invention can obtain porous structures with different pore properties by adjusting process parameters during preparation, and can be matched with materials with different pore properties according to the bearing working conditions, so that the oil-containing cage can run in the bearing Maintain a good dynamic balance of oil in and out, and stabilize the high reliability, low friction and long life of the bearing operation.
  • the performance of the porous phenolic bakelite cage material of the present invention can reach: the radial tensile strength is above 120 MPa, the average pore diameter is between 1.2 ⁇ m and 4.9 ⁇ m, the pore size distribution is narrow and controllable, and the oil content is above 10.8%.
  • the technical scheme adopted by the bearing cage of the present invention is:
  • a bearing cage prepared by using the above-mentioned porous phenolic bakelite cage material.
  • the bearing cage of the present invention is made of the above-mentioned porous phenolic bakelite cage material, which can maintain a good dynamic balance of oil in and out when the bearing is running when oil is contained, and stabilize the high reliability, low friction and long life of the bearing running.
  • the weakly basic catalyst used in the following Examples 1-4 is specifically ammonia monohydrate.
  • the adhesive cloth After impregnating the dry cotton cloth with the impregnation solution of the chemical foaming system, and then impregnating the resole phenolic resin glue solution to obtain the adhesive cloth, the adhesive cloth is sent to an oven with three temperature zones and passes through the first temperature zone, the second temperature zone, and the third temperature zone in turn.
  • the temperature completes the drying process; the temperatures of the three temperature zones are: the first temperature zone is 60°C, the second temperature zone is 90°C, and the third temperature zone is 95°C.
  • the glue content of adhesive tape after drying treatment is 49%, and soluble resin content is 92%; Used cotton cloth is 80N spun yarn flat base cotton cloth;
  • the curing process is as follows: from room temperature to 80°C for 30 minutes and heat for 1 hour; 10 minutes to 110°C for 2 hours; 10 minutes to 130°C, keep warm for 2 hours; rise to 150°C in 10 minutes, keep warm for 6 hours. Turn off the power and cool down to room temperature naturally.
  • the adhesive cloth After impregnating the dry cotton cloth with the impregnation solution of the chemical foaming system, and then impregnating the resole phenolic resin glue solution to obtain the adhesive cloth, the adhesive cloth is sent to an oven with three temperature zones and passes through the first temperature zone, the second temperature zone, and the third temperature zone in turn.
  • the temperature completes the drying process; the temperatures of the three temperature zones are: the first temperature zone is 60°C, the second temperature zone is 100°C, and the third temperature zone is 100°C.
  • the glue content of adhesive tape after drying treatment is 52%, and soluble resin content is 82%; Used cotton cloth is 60N spun yarn plain cotton cloth;
  • the curing process is as follows: start from room temperature for 30 minutes to 80°C, keep warm for 1.5 hours; rise to 110°C for 10 minutes, keep warm for 1.5 hours; 130°C, keep warm for 1.5 hours; rise to 150°C in 10 minutes, keep warm for 6 hours. Turn off the power and cool down to room temperature naturally.
  • the adhesive cloth After impregnating the dry cotton cloth with the impregnation solution of the chemical foaming system, and then impregnating the resole phenolic resin glue solution to obtain the adhesive cloth, the adhesive cloth is sent to an oven with three temperature zones and passes through the first temperature zone, the second temperature zone, and the third temperature zone in turn.
  • the temperature completes the drying process; the temperatures of the three temperature zones are: the first temperature zone is 40°C, the second temperature zone is 80°C, and the third temperature zone is 100°C.
  • the glue content of adhesive tape after drying treatment is 43%, and soluble resin content is 95%; Used cotton cloth is 80N spun yarn plain cotton cloth;
  • the curing process is as follows: from room temperature to 80°C for 25 minutes and heat for 2 hours; for 10 minutes to 100°C for 2 hours; for 10 minutes to 120°C, keep warm for 2 hours; rise to 140°C in 10 minutes, keep warm for 5 hours. Turn off the power and cool down to room temperature naturally.
  • the adhesive cloth After impregnating the dry cotton cloth with the impregnation solution of the chemical foaming system, and then impregnating the resole phenolic resin glue solution to obtain the adhesive cloth, the adhesive cloth is sent to an oven with three temperature zones and passes through the first temperature zone, the second temperature zone, and the third temperature zone in turn.
  • the temperature completes the drying process; the temperatures of the three temperature zones are: the first temperature zone is 50°C, the second temperature zone is 90°C, and the third temperature zone is 110°C.
  • the glue content of adhesive tape after drying treatment is 50%, and soluble resin content is 87%; Used cotton cloth is 100N spun yarn plain cotton cloth;
  • the curing process is as follows: from room temperature to 90°C for 45 minutes, and keep it for 1 hour; 130°C, keep warm for 1 hour; rise to 150°C in 10 minutes, keep warm for 4 hours. Turn off the power and cool down to room temperature naturally.
  • porous phenolic bakelite cage material of this embodiment is prepared by the preparation method of any one of the above embodiments 1 to 4, and will not be repeated here.
  • the bearing cage of this embodiment is made of the porous phenolic bakelite cage material of Embodiment 5 according to the existing method, and will not be repeated here.
  • the pore diameter and porosity of the porous phenolic bakelite cage in Table 1 are determined according to GB/T21650.1-2008 "Measuring the Pore Size Distribution and Porosity of Solid Materials by Mercury Intrusion and Gas Adsorption Method Part 1: Mercury Intrusion Method”;
  • the axial tensile strength is measured with reference to Appendix A of JB/T4037-2019 "Technical Conditions for Phenolic Laminated Tube Cages for Rolling Bearings”; the friction performance of oil-containing cages is tested with a CFT-1 material surface performance comprehensive tester, and the specific test
  • the condition is: diameter 4mm Steel ball surface grinding, reciprocating motion, load 20N, speed 1200rpm, time 60min;
  • the test method of the oil content and oil retention rate of the cage is: after the cage is thoroughly cleaned and dried with various organic solvents, it is placed in lubricating oil Soak in medium to make it fully infiltrated with lubricating oil, then take it out to remove floating oil, the weight gain percentage of
  • porous phenolic bakelite cage material produced in batches according to the method of Example 4 is tested (test method is the same as the experimental example), the radial tensile strength is 134.5 ⁇ 140.1MPa, the average pore diameter is 1.2 ⁇ 1.8 ⁇ m, and the porosity is 14.8 ⁇ 16.0%, oil content 13.5 ⁇ 14.2%, oil retention rate 91.3 ⁇ 92.8%, oil cage friction coefficient 0.04 ⁇ 0.05, oil cage wear 0.22 ⁇ 0.28mm 3 , porous phenolic bakelite cage material has high performance Consistency, significantly improving product reliability.

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Abstract

A preparation method for a porous phenolic bakelite cage material, comprising the following steps: drying an adhesive tape until the content of a soluble resin is 80-95%, then winding the adhesive tape into a tubular or annular shape, and then carrying out curing treatment to obtain the porous phenolic bakelite cage material. The curing treatment is sequentially subjected to heat preservation at 80-90°C for 1-2 h, heat preservation at 100-110°C for 1-2 h, heat preservation at 120-130°C for 1-2 h, and heat preservation at 140-150°C for 4-6 h. The adhesive tape comprises cotton cloth, and a chemical foaming system and an A-order phenolic resin that are impregnated on the cotton cloth. According to the method, the hole performance and the radial drawing strength of the porous phenolic bakelite cage material can be improved. Also comprised are a porous phenolic bakelite cage material and a bearing cage.

Description

多孔酚醛胶木保持架材料及其制备方法、轴承保持架Porous phenolic bakelite cage material and its preparation method, bearing cage 技术领域technical field
本发明涉及一种多孔酚醛胶木保持架材料及其制备方法、轴承保持架，属于轴承保持架技术领域。The invention relates to a porous phenolic bakelite cage material, a preparation method thereof, and a bearing cage, belonging to the technical field of bearing cages.
背景技术Background technique
多孔酚醛胶木保持架材料特有的微孔结构，微孔空隙间充满润滑油并通过棉纤维的毛细管通道彼此相连。轴承工作时通过轴承运转产生的离心力、热和油的表面张力而产生内压，使得储存在多孔酚醛胶木保持架中的润滑油流进和流出，从而使这种保持架能够在轴承摩擦区原位供给、按需提供润滑油，实现润滑油的循环，减少质量漂移，达到长寿命高精度运转，在某些特殊应用环境，只能采用保持架一次稀油润滑技术的轴承系统广泛应用。The porous phenolic wood cage material has a unique microporous structure, and the microporous spaces are filled with lubricating oil and connected to each other through the capillary channels of cotton fibers. When the bearing is working, the internal pressure is generated by the centrifugal force generated by the bearing operation, heat and the surface tension of the oil, so that the lubricating oil stored in the porous phenolic bakelite cage flows in and out, so that the cage can be used in the friction zone of the bearing. Bit supply and lubricating oil on demand to realize the circulation of lubricating oil, reduce quality drift, and achieve long-life and high-precision operation. In some special application environments, bearing systems that can only use cage one-time thin oil lubrication technology are widely used.
该保持架材料的供油速率取决于材料的孔径、孔隙率、润滑油运动粘度和轴承运转速度等等。其中，保持架材料的孔径和孔隙率是由材料的制备工艺所决定的，孔径、孔隙率过大，则出油过多，会降低精度及寿命；孔径、孔隙率过小，则出油过少，轴承不能得到良好润滑可能导致可靠性及寿命降低。多孔酚醛胶木保持架材料的孔径、孔隙率的控制精度很大程度上决定着轴承的精度和寿命。The oil supply rate of the cage material depends on the material's pore size, porosity, kinematic viscosity of the lubricating oil, and bearing operating speed, among others. Among them, the pore size and porosity of the cage material are determined by the preparation process of the material. If the pore size and porosity are too large, too much oil will flow out, which will reduce the accuracy and life; if the pore size and porosity are too small, the oil will flow too much. If less, the bearing cannot be well lubricated, which may lead to reduced reliability and life. The pore diameter and porosity control accuracy of the porous phenolic bakelite cage material largely determine the accuracy and life of the bearing.
文献号为CN100570165C中国发明专利公开了一种滚动轴承用多孔酚醛胶布层压保持架材料的制造方法，该方法先将胶布层压保持架材料通过预浸发泡剂，利用发泡剂在树脂固化过程中发泡成孔的方法制造；该制造方法经过酚醛树脂配制、发泡剂配制、棉布浸渍发泡剂和酚醛树脂、卷绕成型、后固化五个制造过程制成高孔率且含油的多孔酚醛胶布层压保持架材料。这种保持架材料是一种改性酚醛层压材料，具有较高的孔隙率，但径向拉伸强度较低，不能满足使用要求，且孔径离散度较大，孔性能差，影响轴承运转精度和寿命。The document number is CN100570165C Chinese invention patent discloses a manufacturing method of porous phenolic tape laminated cage material for rolling bearings. In this method, the tape laminated cage material is pre-impregnated with a foaming agent, and the foaming agent is used in the resin curing process. It is manufactured by the method of foaming and forming holes; the manufacturing method is made into high-porosity and oil-containing porous materials through five manufacturing processes: phenolic resin preparation, foaming agent preparation, cotton cloth impregnated with foaming agent and phenolic resin, winding molding, and post-curing. Phenolic tape laminated cage material. This cage material is a modified phenolic laminate material with high porosity, but the radial tensile strength is low, which cannot meet the requirements of use, and the pore diameter dispersion is large, and the pore performance is poor, which affects the bearing operation. precision and longevity.
发明内容Contents of the invention
本发明的目的是提供一种多孔酚醛胶木保持架材料的制备方法，能够提高多孔酚醛胶木保持架材料孔性能和径向拉伸强度。The purpose of the present invention is to provide a preparation method of a porous phenolic bakelite cage material, which can improve the pore performance and radial tensile strength of the porous phenolic bakelite cage material.
本发明还提供了一种采用上述多孔酚醛胶木保持架材料的制备方法制得的多孔酚醛胶木保持架材料和采用该多孔酚醛胶木保持架材料制备的轴承保持架。The present invention also provides a porous phenolic bakelite cage material prepared by the method for preparing the porous phenolic bakelite cage material and a bearing cage prepared by using the porous phenolic bakelite cage material.
为了实现以上目的，本发明的多孔酚醛胶木保持架材料的制备方法所采用的技术方案是：In order to achieve the above object, the technical scheme adopted in the preparation method of the porous phenolic bakelite cage material of the present invention is:
一种多孔酚醛胶木保持架材料的制备方法，包括以下步骤：提供胶布，所述胶布包括棉布和浸渍在棉布上的化学发泡体系和甲阶酚醛树脂；将胶布进行烘干处理至可溶性树脂的含量为80～95％，然后卷绕成管状或环状，再进行固化处理，即得；所述固化处理为先在80℃～90℃保温1～2h，然后在100℃～110℃保温1～2h，再在120℃～130℃保温1～2h，最后在140℃～150℃保温4～6h。A method for preparing a porous phenolic bakelite cage material, comprising the following steps: providing adhesive plaster, the adhesive plaster includes cotton cloth and a chemical foaming system and resole phenolic resin impregnated on the cotton cloth; drying the adhesive plaster until the soluble resin The content is 80-95%, and then it is wound into a tubular or ring shape, and then cured to obtain the final product; the curing treatment is to firstly keep warm at 80°C-90°C for 1-2 hours, and then keep warm at 100°C-110°C for 1 hour. ～2h, then keep warm at 120℃～130℃ for 1～2h, and finally keep warm at 140℃～150℃ for 4～6h.
本发明的多孔酚醛胶木保持架材料的制备方法，干燥处理过程中甲阶酚醛树脂缩聚成乙阶酚醛树脂，此时树脂虽已固化，但仍能溶能熔，后期在固化处理的过程中化学发泡体系的发泡剂成分分解成气体，树脂固化成不溶不熔的丙阶段酚醛树脂，包覆气体成为多孔热固性层压材料。在固化过程中，化学发泡剂发泡成分分解，气泡在树脂已交联近弹性体但未硬化时产生，才能达到成孔的目的。太晚无法发泡成孔，过早树脂熔融流动成孔过大，易造成大面积的树脂流失，降低产品强度。In the preparation method of the porous phenolic bakelite cage material of the present invention, during the drying process, the resole phenolic resin is polycondensed into a B-stage phenolic resin. At this time, although the resin has been cured, it can still be dissolved and melted. The foaming agent component of the foaming system decomposes into gas, the resin solidifies into an insoluble and infusible acrylic phenolic resin, and the encapsulating gas becomes a porous thermosetting laminate. During the curing process, the foaming component of the chemical foaming agent decomposes, and the bubbles are generated when the resin has been cross-linked to an elastic body but not hardened, so that the purpose of forming holes can be achieved. If it is too late, it will not be possible to foam and form holes. If the resin melts and flows too early, the pores will be too large, which will easily cause a large area of resin loss and reduce the strength of the product.
本发明的多孔酚醛胶木保持架材料的制备方法，通过对乙阶酚醛树脂的聚合程度、烘干处理后胶布的熟化程度以及固化条件等条件进行控制，不仅可以使材料的摩擦性能有明显提升，而且使制备的多孔酚醛胶木保持架材料孔性能得到有效且稳定控制，孔径分布窄，含油保持率高，相应含油保持架的润滑性能更有效、持久，同时大幅提升保持架材料的径向拉伸强度。例如烘干处理后胶布中胶的质量百分含量为42～52％时，制得孔性能达标的保持架材料，即孔径1μm～5μm、孔隙率10％～20％，合格率在95％以上。此外，本发明的多孔酚醛胶木保持架材料的制备方法工艺稳定、可控且产品性能一致性高、再现性强，适于工业化量产。The preparation method of the porous phenolic bakelite cage material of the present invention can not only significantly improve the friction performance of the material, but also control the degree of polymerization of the B-stage phenolic resin, the degree of curing of the adhesive tape after drying, and the curing conditions. Moreover, the pore properties of the prepared porous phenolic bakelite cage material are effectively and stably controlled, the pore size distribution is narrow, the oil retention rate is high, the lubrication performance of the corresponding oil cage is more effective and durable, and the radial stretch of the cage material is greatly improved. strength. For example, when the mass percentage of glue in the tape after drying treatment is 42-52%, the cage material with pore performance meeting the standard can be obtained, that is, the pore diameter is 1 μm-5 μm, the porosity is 10%-20%, and the pass rate is above 95%. . In addition, the preparation method of the porous phenolic bakelite cage material of the present invention has a stable and controllable process, high product performance consistency and strong reproducibility, and is suitable for industrial mass production.
进一步地，将胶布进行烘干处理至可溶性树脂的含量为82～95％。本发明的可溶性树脂含量为采用以下方法测定的质量百分含量：①将烘干后胶布和同规格同批次棉布叠放裁相同大小3件。②将其中一件胶布在丙酮中浸泡5分钟，取出，空气中晾干；③将胶布和棉布分开放置于烘箱中，升温至135±2℃恒温半小时后，关闭烘箱，取出放置于干燥器中，冷却至室温后，用分析天平分别称重：棉布重为W 0；胶布重为W；浸泡过丙酮的胶布重为W′。④计算：可溶性树脂含量＝(W-W′)/(W-W 0)×100％。 Further, the adhesive cloth is dried until the content of the soluble resin is 82-95%. The content of soluble resin in the present invention is the mass percent content determined by the following method: ① stack the adhesive tape after drying and the same batch of cotton cloth with the same specification and cut 3 pieces of the same size. ②Soak one of the tapes in acetone for 5 minutes, take it out, and dry it in the air; ③Put the tape and cotton cloth separately in the oven, heat up to 135±2°C for half an hour, turn off the oven, take it out and place it in a desiccator After cooling to room temperature, weigh them with an analytical balance: the weight of the cotton cloth is W 0 ; the weight of the adhesive cloth is W; the weight of the adhesive cloth soaked in acetone is W′. ④Calculation: soluble resin content=(WW′)/(WW 0 )×100%.
优选的，所述甲阶酚醛树脂的重均分子量为200～600，例如320～560。所述甲阶酚醛树脂的比重为1.050～1.070，例如1.054～1.068。所述甲阶酚醛树脂的粘度为16～20s，例如16～18s。Preferably, the weight average molecular weight of the resole phenolic resin is 200-600, for example 320-560. The specific gravity of the resole phenolic resin is 1.050-1.070, such as 1.054-1.068. The viscosity of the resole phenolic resin is 16-20s, for example, 16-18s.
本发明中甲阶酚醛树脂的重均分子量为依据SH/T1759-2007《用凝胶渗透色谱法测定溶液聚合物分子量分布》测定得到。本发明中甲阶酚醛树脂的比重由比重计测定。本发明中甲阶酚醛树脂的粘度由涂-4粘度计测定。The weight-average molecular weight of the resole phenolic resin in the present invention is determined according to SH/T1759-2007 "Determination of Molecular Weight Distribution of Solution Polymers by Gel Permeation Chromatography". The specific gravity of the resole phenolic resin in the present invention is measured by a hydrometer. The viscosity of the resole phenolic resin in the present invention is measured by coating-4 viscometer.
优选的，固化处理中，在140～150℃保温的时间为4～5h。Preferably, during the curing treatment, the time for keeping the temperature at 140-150° C. is 4-5 hours.
优选的，所述烘干处理将所述胶布依次在30℃～60℃、80℃～100℃、90℃～110℃进行干燥。例如，所述烘干处理将所述胶布依次在40℃～60℃、80℃～100℃、100℃～110℃进行干燥。Preferably, in the drying treatment, the adhesive plaster is dried at 30° C. to 60° C., 80° C. to 100° C., and 90° C. to 110° C. sequentially. For example, in the drying process, the adhesive tape is dried at 40°C-60°C, 80°C-100°C, and 100°C-110°C in sequence.
为了得到孔性能更好的保持架材料，优选的，烘干处理后胶布中胶的质量百分含量为42～52％，例如43％。本发明中烘干处理后胶布中胶的质量百分含量为采用以下方法测得含量：①将干燥后胶布和同规格同批次棉布叠放裁相同大小，分开放置于烘箱中，升温至135±2℃恒温半小时后，关闭烘箱，取出放置于干燥器中，冷却至室温后，用分析天平分别称重：棉布重为W 0；胶布重为W。②计算：胶含量＝(W-W 0)/W×100％。 In order to obtain a cage material with better porosity, preferably, the mass percentage of glue in the adhesive cloth after drying treatment is 42-52%, for example 43%. In the present invention, the mass percentage of glue in the adhesive tape after the drying treatment is to adopt the following method to measure the content: ① stack the dried adhesive tape and the same batch of cotton cloth with the same specification and cut them to the same size, place them separately in the oven, and heat up to 135 After half an hour at a constant temperature of ±2°C, turn off the oven, take it out and place it in a desiccator, and after cooling to room temperature, weigh it with an analytical balance: the weight of the cotton cloth is W 0 ; the weight of the tape is W. ②Calculation: glue content=(WW 0 )/W×100%.
优选的，所述胶布采用包括以下步骤的方法制得：将棉布依次在化学发泡体系浸渍液、甲阶酚醛树脂胶液中进行浸渍处理，即得。所述甲阶酚醛树脂胶液主要由甲阶酚醛树脂和醇类溶剂混合得到；所述醇类溶剂与甲阶酚醛树脂质量的20～50％，例如26～42％。所述醇类溶剂优选为乙醇。本发明对棉布的规格没有限制，例如所述棉布的纱线细度为40N以上。具体地，例如所述棉布的纱线细度为40N、60N、80N、100N或120N。所述棉布为平纹棉布(平基棉布)或斜纹棉布。Preferably, the adhesive plaster is prepared by a method comprising the following steps: sequentially impregnating the cotton cloth in a chemical foaming system impregnation solution and a resole phenolic resin glue solution. The resole phenolic resin glue solution is mainly obtained by mixing a resole phenolic resin and an alcoholic solvent; the alcoholic solvent and the resole phenolic resin are 20-50% by weight, for example, 26-42%. The alcoholic solvent is preferably ethanol. The specification of the cotton cloth is not limited in the present invention, for example, the yarn fineness of the cotton cloth is above 40N. Specifically, for example, the yarn fineness of the cotton cloth is 40N, 60N, 80N, 100N or 120N. The cotton cloth is plain cotton cloth (plain cotton cloth) or twill cotton cloth.
可以理解的是，化学发泡体系在固化处理过程中发泡。优选的，所述化学发泡体系的发泡温度为80℃～130℃。所述化学发泡体系包括化学发泡剂和发泡助剂。发泡助剂作为化学发泡剂的分解助剂，用于调整化学发泡剂的分解温度。可以理解的是，所述化学发泡体系的发泡温度为80℃～130℃时，发泡助剂用于调整化学发泡剂的分解温度为80～130℃。It is understood that chemical foaming systems foam during the curing process. Preferably, the foaming temperature of the chemical foaming system is 80°C to 130°C. The chemical foaming system includes a chemical foaming agent and a foaming aid. Foaming aids are used as decomposition aids for chemical blowing agents to adjust the decomposition temperature of chemical blowing agents. It can be understood that when the foaming temperature of the chemical foaming system is 80°C to 130°C, the foaming aid is used to adjust the decomposition temperature of the chemical foaming agent to be 80°C to 130°C.
进一步地，所述化学发泡剂选自偶氮二异丁腈(AIBN)、偶氮二甲酰胺(发泡剂AC)、N,N′-二亚硝基五次甲基四胺(发泡剂DPT)、4,4′-氧代双苯磺酰肼(发泡剂OBSH)中的一种或任意组合。所述发泡助剂选自碳酸氢钠、碳酸铵、氧化锌、硬脂酸锌、亚硝酸铵、水杨酸、苯甲酸、碳酰胺中的一种或任意组合。更进一步地，所述发泡助剂优选为碳酰胺和/或苯甲酸。Further, the chemical foaming agent is selected from azobisisobutyronitrile (AIBN), azodicarbonamide (foaming agent AC), N,N'-dinitrosopentamethylenetetramine (foaming agent One or any combination of foaming agent DPT), 4,4'-oxobisbenzenesulfonyl hydrazide (foaming agent OBSH). The foaming aid is selected from one or any combination of sodium bicarbonate, ammonium carbonate, zinc oxide, zinc stearate, ammonium nitrite, salicylic acid, benzoic acid, and carbonamide. Furthermore, the foaming aid is preferably carbonamide and/or benzoic acid.
进一步优选的，所述化学发泡剂为N,N′-二亚硝基五次甲基四胺和/或4,4′-氧代双苯磺酰肼，所述发泡助剂为碳酰胺和/或苯甲酸。所述化学发泡剂与发泡助剂的质量比为(1.5～2.5):1，例如1.5～2.1:1。Further preferably, the chemical foaming agent is N,N'-dinitrosopentamethylenetetramine and/or 4,4'-oxobisbenzenesulfonyl hydrazide, and the foaming aid is carbon Amides and/or Benzoic Acids. The mass ratio of the chemical foaming agent to the foaming aid is (1.5-2.5):1, for example, 1.5-2.1:1.
更进一步优选的，所述化学发泡剂为N,N′-二亚硝基五次甲基四胺，所述发泡助剂为碳酰胺；或所述化学发泡剂为4,4′-氧代双苯磺酰肼，所述发泡助剂为苯甲酸。调整化学发泡剂与发泡助剂的质量比为(1.5～2.5):1可以将化学发泡剂的分解温度降低至80℃～130℃，保证分解发泡温度在酚醛树脂交联温度范围内，使得化学发泡剂分解发泡与酚醛树脂交联固化得以同步进行，有效固化气泡，使得孔径均匀性趋向一致。More preferably, the chemical foaming agent is N,N'-dinitrosopentamethylenetetramine, and the foaming aid is carbonamide; or the chemical foaming agent is 4,4' -Oxybisbenzenesulfonyl hydrazide, the foaming aid is benzoic acid. Adjusting the mass ratio of chemical foaming agent to foaming aid to (1.5-2.5):1 can reduce the decomposition temperature of chemical foaming agent to 80°C-130°C, and ensure that the decomposition and foaming temperature is within the crosslinking temperature range of phenolic resin Internally, the decomposition and foaming of the chemical blowing agent and the cross-linking and curing of the phenolic resin can be carried out simultaneously, effectively curing the bubbles, and making the uniformity of the pore size tend to be consistent.
化学发泡体系浸渍液包括化学发泡剂、发泡助剂和溶剂。进一步地，所述溶剂为醇类溶剂和/或酮类溶剂。每1g发泡助剂对应采用的溶剂的体积优选为40～100mL。The impregnating liquid of the chemical foaming system includes chemical foaming agent, foaming aid and solvent. Further, the solvent is an alcohol solvent and/or a ketone solvent. The volume of the solvent used per 1 g of the foaming aid is preferably 40 to 100 mL.
所述醇类溶剂优选为乙醇。所述酮类溶剂优选为丙酮。The alcoholic solvent is preferably ethanol. The ketone solvent is preferably acetone.
进一步地，所述化学发泡剂体系浸渍液是将化学发泡剂溶液与发泡助剂溶液混合得到，发泡剂溶液和发泡助剂溶液的体积比为2.2-3:1。更进一步地，所述化学发泡剂为N,N′-二亚硝基五次甲基四胺，所述发泡助剂为碳酰胺时，所述化学发泡剂溶液的溶剂为酮类溶剂，所述发泡助剂的溶剂为醇类溶剂。所述化学发泡剂为4,4′-氧代双苯磺酰肼，所述发泡助剂为苯甲酸时，所述化学发泡剂溶液的溶剂为醇类溶剂，所述发泡助剂的溶剂为醇类溶剂。Further, the dipping solution of the chemical foaming agent system is obtained by mixing a chemical foaming agent solution and a foaming aid solution, and the volume ratio of the foaming agent solution to the foaming aid solution is 2.2-3:1. Further, the chemical foaming agent is N, N'-dinitrosopentamethylenetetramine, and when the foaming aid is carbonamide, the solvent of the chemical foaming agent solution is a ketone Solvent, the solvent of the foaming aid is an alcohol solvent. The chemical foaming agent is 4,4'-oxobisbenzenesulfonyl hydrazide, and when the foaming aid is benzoic acid, the solvent of the chemical foaming agent solution is an alcohol solvent, and the foaming aid The solvent of the agent is an alcoholic solvent.
优选的，所述甲阶酚醛树脂采用包括以下步骤的方法制得：将苯酚与甲醛以1:1.1～1.2的摩尔比于60℃～80℃的温度下在碱性催化剂的作用下反应60～90min，脱水，即得。进一步优选的，苯酚和甲醛于60～70℃下反应70～90min。所述脱水为真空脱水。Preferably, the resole phenolic resin is prepared by a method comprising the following steps: reacting phenol and formaldehyde at a molar ratio of 1:1.1 to 1.2 at a temperature of 60°C to 80°C under the action of a basic catalyst for 60 to 90 minutes, dehydration, that is. Further preferably, the phenol and formaldehyde are reacted at 60-70° C. for 70-90 minutes. The dehydration is vacuum dehydration.
优选的，所述碱性催化剂为弱碱性催化剂。所述弱碱性催化剂为氢氧化铝、氢氧化铜、氢氧化铁、氢氧化锌、一水合氨中的一种或任意组合。所述碱性催化剂的用量为苯酚质量的0.3～0.8％，例如0.4％。Preferably, the basic catalyst is a weakly basic catalyst. The weakly basic catalyst is one or any combination of aluminum hydroxide, copper hydroxide, iron hydroxide, zinc hydroxide, and ammonia monohydrate. The amount of the basic catalyst used is 0.3-0.8%, for example 0.4%, of the mass of phenol.
上述固化处理可以使得树脂得到充分熔融，提高交联固化密度，从而增强保持架材料的力学性能。优选的，固化处理过程中，升温至80℃～90℃的时间为20min～50min，例如25～40min。通过对升温时间的控制可以确保待固化材料受热均匀，发泡、固化同步进行，树脂充分交联固化，在成孔的同时，确保得到必要的强度指标。由80～90℃升温至100℃～110℃的时间为10min～20min。由100～110℃升温至120℃～130℃的时间为10min～20min。由120℃～130℃升温至140℃～150℃的时间为10min～20min。The above curing treatment can fully melt the resin, increase the cross-linking solidification density, and thereby enhance the mechanical properties of the cage material. Preferably, during the curing process, the time for heating to 80° C. to 90° C. is 20 minutes to 50 minutes, for example, 25 to 40 minutes. By controlling the heating time, it can ensure that the material to be cured is heated evenly, foaming and curing are carried out simultaneously, the resin is fully cross-linked and cured, and the necessary strength index is ensured while forming holes. The time for heating from 80-90°C to 100-110°C is 10min-20min. The time for heating from 100-110°C to 120-130°C is 10min-20min. The time for heating from 120°C to 130°C to 140°C to 150°C is 10min to 20min.
本发明的多孔酚醛胶木保持架材料所采用的技术方案为：The technical scheme adopted by the porous phenolic bakelite cage material of the present invention is:
一种采用上述的多孔酚醛胶木保持架材料的制备方法制得的多孔酚醛胶木保持架材料。A porous phenolic bakelite cage material prepared by the above-mentioned preparation method of the porous phenolic bakelite cage material.
本发明的多孔酚醛胶木保持架材料，采用上述的多孔酚醛胶木保持架材料制备方 法制得，具有质轻、比强度高、抗冲击性好、耐磨性好、含油自润滑的优点，可广泛应用于陀螺仪球轴承等精密轴承和其他高端高速精密民品轴承，特别是在轴承等不能进行维修的条件下，采用轴承自身一次性润滑的形式，实现轴承高可靠、高精度、低摩擦、长寿命的使用目的，能替代进口，具有良好的社会效益和经济效益。The porous phenolic bakelite cage material of the present invention is prepared by the above-mentioned porous phenolic bakelite cage material preparation method, has the advantages of light weight, high specific strength, good impact resistance, good wear resistance, and oil-containing self-lubrication, and can be widely used It is applied to precision bearings such as gyroscope ball bearings and other high-end high-speed precision civilian bearings. Especially under the condition that the bearings cannot be maintained, the bearing itself is lubricated in the form of one-time lubrication to achieve high reliability, high precision, low friction, and long life. The purpose of life is to replace imports, and has good social and economic benefits.
本发明的多孔酚醛胶木保持架材料，在制备时可通过调整工艺参数得到不同孔性能的多孔结构，并可根据轴承工况与不同孔隙特性的材料进行匹配，从而使得含油保持架能够在轴承运转时维持良好的进出油动态平衡，稳定轴承运转的高可靠性、低摩擦性和长寿命。本发明的多孔酚醛胶木保持架材料的性能可达：径向拉伸强度在120MPa以上，平均孔径在1.2μm～4.9μm之间，孔径分布窄且可控，含油率在10.8％以上。The porous phenolic bakelite cage material of the present invention can obtain porous structures with different pore properties by adjusting process parameters during preparation, and can be matched with materials with different pore properties according to the bearing working conditions, so that the oil-containing cage can run in the bearing Maintain a good dynamic balance of oil in and out, and stabilize the high reliability, low friction and long life of the bearing operation. The performance of the porous phenolic bakelite cage material of the present invention can reach: the radial tensile strength is above 120 MPa, the average pore diameter is between 1.2 μm and 4.9 μm, the pore size distribution is narrow and controllable, and the oil content is above 10.8%.
本发明的轴承保持架所采用的技术方案为：The technical scheme adopted by the bearing cage of the present invention is:
一种采用上述的多孔酚醛胶木保持架材料制备的轴承保持架。A bearing cage prepared by using the above-mentioned porous phenolic bakelite cage material.
本发明的轴承保持架采用上述的多孔酚醛胶木保持架材料制成，含油时可以在轴承运转时维持良好的进出油动态平衡，稳定轴承运转的高可靠性、低摩擦性和长寿命。The bearing cage of the present invention is made of the above-mentioned porous phenolic bakelite cage material, which can maintain a good dynamic balance of oil in and out when the bearing is running when oil is contained, and stabilize the high reliability, low friction and long life of the bearing running.
具体实施方式Detailed ways
以下结合具体实施方式对本发明的技术方案作进一步的说明。The technical solution of the present invention will be further described below in combination with specific embodiments.
以下实施例1～4中采用的弱碱性催化剂具体为一水合氨。The weakly basic catalyst used in the following Examples 1-4 is specifically ammonia monohydrate.
实施例1Example 1
本实施例的多孔酚醛胶木保持架材料的制备方法，包括以下步骤：The preparation method of the porous phenolic bakelite cage material of the present embodiment comprises the following steps:
1)甲阶酚醛树脂合成1) Synthesis of resole phenolic resin
将苯酚与甲醛以1:1.10的摩尔比混合均匀，在水浴75℃的温度下，加入苯酚质量1.0％的弱碱性催化剂，反应85分钟，真空脱水，得甲阶酚醛树脂；制备的甲阶酚醛树脂的重均分子量为540，比重为1.060，粘度为17.5s；Mix phenol and formaldehyde uniformly at a molar ratio of 1:1.10, add a weakly basic catalyst with 1.0% phenol mass in a water bath at a temperature of 75°C, react for 85 minutes, and vacuum dehydrate to obtain a resole phenolic resin; the prepared resole The weight average molecular weight of the phenolic resin is 540, the specific gravity is 1.060, and the viscosity is 17.5s;
2)甲阶酚醛树脂胶液配制2) Preparation of resole phenolic resin glue
在制备的甲阶酚醛树脂中加入树脂质量30％的无水乙醇，搅拌均匀，得到甲阶酚醛树脂胶液；Add 30% dehydrated alcohol of resin quality to the prepared resole phenolic resin, stir evenly, obtain resole phenolic resin glue;
3)化学发泡体系浸渍液配制3) Preparation of impregnation solution for chemical foaming system
将W克苯甲酸溶于V升无水乙醇，2W克发泡剂OBSH溶于3V升无水乙醇，然后将两溶液混合均匀成为化学发泡体系浸渍液；每1g苯甲酸对应采用的无水乙醇的体积为10mL；Dissolve W gram of benzoic acid in V liters of absolute ethanol, 2W gram of blowing agent OBSH in 3V liters of absolute ethanol, then mix the two solutions uniformly to become a chemical foaming system impregnation solution; every 1g of benzoic acid corresponds to the anhydrous The volume of ethanol is 10mL;
4)浸渍树脂及烘干处理4) Resin impregnation and drying treatment
将干燥的棉布浸渍过化学发泡体系浸渍液后，再浸渍甲阶酚醛树脂胶液得到胶布，将胶布送入设置有三个温区的烘箱依次经过第一温区、第二温区、第三温度完成烘干处理；三个温区的温度分别为：第一温区60℃、第二温区90℃、第三温区95℃。烘干处理后胶布的胶含量为49％，可溶性树脂含量为92％；所用的棉布为80N细纱平基棉布；After impregnating the dry cotton cloth with the impregnation solution of the chemical foaming system, and then impregnating the resole phenolic resin glue solution to obtain the adhesive cloth, the adhesive cloth is sent to an oven with three temperature zones and passes through the first temperature zone, the second temperature zone, and the third temperature zone in turn. The temperature completes the drying process; the temperatures of the three temperature zones are: the first temperature zone is 60°C, the second temperature zone is 90°C, and the third temperature zone is 95°C. The glue content of adhesive tape after drying treatment is 49%, and soluble resin content is 92%; Used cotton cloth is 80N spun yarn flat base cotton cloth;
5)固化成型5) Curing molding
将烘干处理后的胶布卷绕成胶布管放置在烘箱中烘培固化，固化工艺为：从常温开始30min升至80℃，保温1小时；10min升至110℃，保温2小时；10min升至130℃，保温2小时；10min升至150℃，保温6小时。关闭电源，自然冷却至室温。Wind the dried tape into a tape tube and place it in an oven to bake and cure. The curing process is as follows: from room temperature to 80°C for 30 minutes and heat for 1 hour; 10 minutes to 110°C for 2 hours; 10 minutes to 130°C, keep warm for 2 hours; rise to 150°C in 10 minutes, keep warm for 6 hours. Turn off the power and cool down to room temperature naturally.
实施例2Example 2
本实施例的多孔酚醛胶木保持架材料的制备方法，包括以下步骤：The preparation method of the porous phenolic bakelite cage material of the present embodiment comprises the following steps:
1)甲阶酚醛树脂合成1) Synthesis of resole phenolic resin
将苯酚与甲醛以1:1.10的摩尔比混合均匀，在水浴80℃的温度下，加入苯酚质量0.8％的弱碱性催化剂，反应60分钟，真空脱水，得甲阶酚醛树脂；制备的甲阶酚醛树脂的重均分子量为560，比重为1.062，粘度为16s；Mix phenol and formaldehyde evenly at a molar ratio of 1:1.10, add a weakly basic catalyst with a mass of 0.8% phenol in a water bath at a temperature of 80°C, react for 60 minutes, and vacuum dehydrate to obtain a resole phenolic resin; the prepared resole The weight average molecular weight of the phenolic resin is 560, the specific gravity is 1.062, and the viscosity is 16s;
2)甲阶酚醛树脂胶液配制2) Preparation of resole phenolic resin glue
在制备的甲阶酚醛树脂中加入树脂质量26％的无水乙醇，搅拌均匀，得到甲阶酚醛树脂胶液；Add absolute ethanol with a resin mass of 26% to the prepared resole phenolic resin, and stir evenly to obtain a resole phenolic resin glue;
3)化学发泡体系浸渍液配制3) Preparation of impregnation solution for chemical foaming system
将W克碳酰胺溶于V升无水乙醇，1.5W克发泡剂DPT溶于2.2V升丙酮，然后将两溶液混合均匀成为化学发泡体系浸渍液；每1g碳酰胺对应采用的无水乙醇的体积为18mL；Dissolve W grams of carbonamide in V liters of absolute ethanol, 1.5W grams of blowing agent DPT in 2.2V liters of acetone, and then mix the two solutions evenly to become the impregnating solution for the chemical foaming system; each 1g of carbonamide corresponds to the anhydrous The volume of ethanol is 18mL;
4)浸渍树脂及烘干处理4) Resin impregnation and drying treatment
将干燥的棉布浸渍过化学发泡体系浸渍液后，再浸渍甲阶酚醛树脂胶液得到胶布，将胶布送入设置有三个温区的烘箱依次经过第一温区、第二温区、第三温度完成烘干处理；三个温区的温度分别为：第一温区60℃、第二温区100℃、第三温区100℃。烘干处理后胶布的胶含量为52％，可溶性树脂含量为82％；所用的棉布为60N细纱平基棉布；After impregnating the dry cotton cloth with the impregnation solution of the chemical foaming system, and then impregnating the resole phenolic resin glue solution to obtain the adhesive cloth, the adhesive cloth is sent to an oven with three temperature zones and passes through the first temperature zone, the second temperature zone, and the third temperature zone in turn. The temperature completes the drying process; the temperatures of the three temperature zones are: the first temperature zone is 60°C, the second temperature zone is 100°C, and the third temperature zone is 100°C. The glue content of adhesive tape after drying treatment is 52%, and soluble resin content is 82%; Used cotton cloth is 60N spun yarn plain cotton cloth;
5)固化成型5) Curing molding
将烘干处理后的胶布卷绕成胶布管放置在烘箱中烘培固化，固化工艺为：从常温开始30min升至80℃，保温1.5小时；10min升至110℃，保温1.5小时；10min升至130℃，保温1.5小时；10min升至150℃，保温6小时。关闭电源，自然冷却至室温。Wind the dried tape into a tape tube and place it in an oven to bake and cure. The curing process is as follows: start from room temperature for 30 minutes to 80°C, keep warm for 1.5 hours; rise to 110°C for 10 minutes, keep warm for 1.5 hours; 130°C, keep warm for 1.5 hours; rise to 150°C in 10 minutes, keep warm for 6 hours. Turn off the power and cool down to room temperature naturally.
实施例3Example 3
本实施例的多孔酚醛胶木保持架材料的制备方法，包括以下步骤：The preparation method of the porous phenolic bakelite cage material of the present embodiment comprises the following steps:
1)甲阶酚醛树脂合成1) Synthesis of resole phenolic resin
将苯酚与甲醛以1:1.18的摩尔比混合均匀，在水浴60℃的温度下，加入苯酚质量0.6％的弱碱性催化剂，反应90分钟，真空脱水，得甲阶酚醛树脂；制得的甲阶酚醛树脂的重均分子量为320，比重为1.054，粘度为17s；Mix phenol and formaldehyde uniformly at a molar ratio of 1:1.18, add a weakly basic catalyst with a mass of 0.6% phenol in a water bath at a temperature of 60°C, react for 90 minutes, and vacuum dehydrate to obtain a resole phenolic resin; The weight-average molecular weight of the first-order phenolic resin is 320, the specific gravity is 1.054, and the viscosity is 17s;
2)甲阶酚醛树脂胶液配制2) Preparation of resole phenolic resin glue
在制备的甲阶酚醛树脂中加入树脂质量38％的无水乙醇，搅拌均匀，得到甲阶酚醛树脂胶液；Add 38% dehydrated alcohol of resin quality to the prepared resole phenolic resin, stir evenly, obtain resole phenolic resin glue;
3)化学发泡体系浸渍液配制3) Preparation of impregnation solution for chemical foaming system
将W克碳酰胺溶于V升无水乙醇，1.8W克发泡剂DPT溶于2.6V升丙酮，然后将两溶液混合均匀成为化学发泡体系浸渍液；每1g碳酰胺对应采用的无水乙醇的体积为22mL；Dissolve W gram of carbonamide in V liters of absolute ethanol, 1.8W gram of blowing agent DPT in 2.6V liters of acetone, and then mix the two solutions evenly to become the impregnating solution of the chemical foaming system; each 1g of carbonamide corresponds to the anhydrous The volume of ethanol is 22mL;
4)浸渍树脂及烘干处理4) Resin impregnation and drying treatment
将干燥的棉布浸渍过化学发泡体系浸渍液后，再浸渍甲阶酚醛树脂胶液得到胶布，将胶布送入设置有三个温区的烘箱依次经过第一温区、第二温区、第三温度完成烘干处理；三个温区的温度分别为：第一温区40℃、第二温区80℃、第三温区100℃。烘干处理后胶布的胶含量为43％，可溶性树脂含量为95％；所用的棉布为80N细纱平基棉布；After impregnating the dry cotton cloth with the impregnation solution of the chemical foaming system, and then impregnating the resole phenolic resin glue solution to obtain the adhesive cloth, the adhesive cloth is sent to an oven with three temperature zones and passes through the first temperature zone, the second temperature zone, and the third temperature zone in turn. The temperature completes the drying process; the temperatures of the three temperature zones are: the first temperature zone is 40°C, the second temperature zone is 80°C, and the third temperature zone is 100°C. The glue content of adhesive tape after drying treatment is 43%, and soluble resin content is 95%; Used cotton cloth is 80N spun yarn plain cotton cloth;
5)固化成型5) Curing molding
将烘干处理后的胶布卷绕成胶布管放置在烘箱中烘培固化，固化工艺为：从常温开始25min升至80℃，保温2小时；10min升至100℃，保温2小时；10min升至120℃，保温2小时；10min升至140℃，保温5小时。关闭电源，自然冷却至室温。Wind the dried tape into a tape tube and place it in an oven for curing. The curing process is as follows: from room temperature to 80°C for 25 minutes and heat for 2 hours; for 10 minutes to 100°C for 2 hours; for 10 minutes to 120°C, keep warm for 2 hours; rise to 140°C in 10 minutes, keep warm for 5 hours. Turn off the power and cool down to room temperature naturally.
实施例4Example 4
本实施例的多孔酚醛胶木保持架材料的制备方法，包括以下步骤：The preparation method of the porous phenolic bakelite cage material of the present embodiment comprises the following steps:
1)甲阶酚醛树脂合成1) Synthesis of resole phenolic resin
将苯酚与甲醛以1:1.20的摩尔比混合均匀，在水浴70℃的温度下，加入苯酚质量0.4％的弱碱性催化剂，反应70分钟，真空脱水，得甲阶酚醛树脂；制备的甲阶酚醛树脂的重均分子量为480，比重为1.068，粘度为18s；Mix phenol and formaldehyde uniformly at a molar ratio of 1:1.20, add a weakly basic catalyst with a mass of 0.4% phenol in a water bath at a temperature of 70°C, react for 70 minutes, and vacuum dehydrate to obtain a resole phenolic resin; the prepared resole The weight average molecular weight of the phenolic resin is 480, the specific gravity is 1.068, and the viscosity is 18s;
2)甲阶酚醛树脂胶液配制2) Preparation of resole phenolic resin glue
在制备的甲阶酚醛树脂中加入树脂质量42％的无水乙醇，搅拌均匀，得到甲阶酚 醛树脂胶液；Add the dehydrated alcohol of resin quality 42% in the resole phenolic resin of preparation, stir, obtain the resole phenolic resin glue;
3)化学发泡体系浸渍液配制3) Preparation of impregnation solution for chemical foaming system
将W克碳酰胺溶于V升无水乙醇，2.1W克发泡剂DPT溶于3V升丙酮，然后将两溶液混合均匀成为化学发泡体系浸渍液；每1g碳酰胺对应采用的无水乙醇的体积为25mL；Dissolve W grams of carbonamide in V liters of absolute ethanol, dissolve 2.1W grams of blowing agent DPT in 3V liters of acetone, and then mix the two solutions evenly to become a chemical foaming system impregnation solution; each 1g of carbonamide corresponds to the absolute alcohol used The volume is 25mL;
4)浸渍树脂及烘干处理4) Resin impregnation and drying treatment
将干燥的棉布浸渍过化学发泡体系浸渍液后，再浸渍甲阶酚醛树脂胶液得到胶布，将胶布送入设置有三个温区的烘箱依次经过第一温区、第二温区、第三温度完成烘干处理；三个温区的温度分别为：第一温区50℃、第二温区90℃、第三温区110℃。烘干处理后胶布的胶含量为50％，可溶性树脂含量为87％；所用的棉布为100N细纱平基棉布；After impregnating the dry cotton cloth with the impregnation solution of the chemical foaming system, and then impregnating the resole phenolic resin glue solution to obtain the adhesive cloth, the adhesive cloth is sent to an oven with three temperature zones and passes through the first temperature zone, the second temperature zone, and the third temperature zone in turn. The temperature completes the drying process; the temperatures of the three temperature zones are: the first temperature zone is 50°C, the second temperature zone is 90°C, and the third temperature zone is 110°C. The glue content of adhesive tape after drying treatment is 50%, and soluble resin content is 87%; Used cotton cloth is 100N spun yarn plain cotton cloth;
5)固化成型5) Curing molding
将烘干处理后的胶布卷绕成胶布管放置在烘箱中烘培固化，固化工艺为：从常温开始45min升至90℃，保温1小时；10min升至110℃，保温1小时；10min升至130℃，保温1小时；10min升至150℃，保温4小时。关闭电源，自然冷却至室温。Wind the dried tape into a tape tube and place it in an oven for curing. The curing process is as follows: from room temperature to 90°C for 45 minutes, and keep it for 1 hour; 130°C, keep warm for 1 hour; rise to 150°C in 10 minutes, keep warm for 4 hours. Turn off the power and cool down to room temperature naturally.
实施例5Example 5
本实施例的多孔酚醛胶木保持架材料采用上述实施例1～4中任意一个实施例的制备方法制得，此处不再赘述。The porous phenolic bakelite cage material of this embodiment is prepared by the preparation method of any one of the above embodiments 1 to 4, and will not be repeated here.
实施例6Example 6
本实施例的轴承保持架，采用实施例5的多孔酚醛胶木保持架材料按照现有方法制成，此处不再赘述。The bearing cage of this embodiment is made of the porous phenolic bakelite cage material of Embodiment 5 according to the existing method, and will not be repeated here.
实验例Experimental example
分别对实施例1～4中制得的多孔酚醛胶木保持架材料的性能进行测试，并以采用授权公告号为CN100570165C的专利文献的实施例1的方法中制备的保持架材料(棉布与本发明的实施例相同，批量生产数据)作为对比，测试内容和方法以及测试结果见表1。The performance of the porous phenolic bakelite cage material prepared in Examples 1 to 4 is tested respectively, and the cage material (cotton cloth and The embodiment of same, batch production data) as contrast, test content and method and test result are shown in Table 1.
表1多孔酚醛胶木保持架材料性能数据汇总表Table 1 Summary of performance data of porous phenolic bakelite cage material
Figure PCTCN2021132326-appb-000001
Figure PCTCN2021132326-appb-000001
Figure PCTCN2021132326-appb-000002
Figure PCTCN2021132326-appb-000002
注：表1中多孔酚醛胶木保持架的孔径和孔隙率按照GB/T21650.1-2008《压汞法和气体吸附法测定固体材料孔径分布和孔隙度第1部分：压汞法》测定；径向拉伸强度参照JB/T4037-2019《滚动轴承酚醛层压布管保持架技术条件》附录A测定；含油保持架的摩擦性能采用仪器为CFT-1型材料表面性能综合测试仪进行测试，具体测试条件为：直径4mm
Figure PCTCN2021132326-appb-000003
钢球球面对磨，往复运动，载荷20N，转速1200rpm，时间60min；保持架的含油率和含油保持率的测试方法为：将保持架经多种有机溶剂彻底清洗、干燥后，在润滑油中浸泡，使其充分浸润润滑油，然后取出去除浮油，保持架质量的增重百分比为含油率，以一定速度旋转甩油2h后保持架剩余含油量与初始含油量的比例为含油保持率。 Note: The pore diameter and porosity of the porous phenolic bakelite cage in Table 1 are determined according to GB/T21650.1-2008 "Measuring the Pore Size Distribution and Porosity of Solid Materials by Mercury Intrusion and Gas Adsorption Method Part 1: Mercury Intrusion Method"; The axial tensile strength is measured with reference to Appendix A of JB/T4037-2019 "Technical Conditions for Phenolic Laminated Tube Cages for Rolling Bearings"; the friction performance of oil-containing cages is tested with a CFT-1 material surface performance comprehensive tester, and the specific test The condition is: diameter 4mm
Figure PCTCN2021132326-appb-000003
Steel ball surface grinding, reciprocating motion, load 20N, speed 1200rpm, time 60min; the test method of the oil content and oil retention rate of the cage is: after the cage is thoroughly cleaned and dried with various organic solvents, it is placed in lubricating oil Soak in medium to make it fully infiltrated with lubricating oil, then take it out to remove floating oil, the weight gain percentage of the cage mass is the oil content rate, and the ratio of the remaining oil content of the cage to the initial oil content after rotating at a certain speed for 2 hours is the oil content retention rate .
由表1中数据可知：本发明实施例制备的多孔酚醛胶木保持架材料的径向拉伸强度保持在120MPa以上，平均孔径在1.2μm～4.9μm之间，孔径分布窄且可控，含油率10.8％以上。From the data in Table 1, it can be seen that the radial tensile strength of the porous phenolic bakelite cage material prepared in the embodiment of the present invention remains above 120 MPa, the average pore size is between 1.2 μm and 4.9 μm, the pore size distribution is narrow and controllable, and the oil content 10.8% or more.
对按照实施例4的方法批量生产的多孔酚醛胶木保持架材料的性能进行测试(测试方法同实验例)，径向拉伸强度为134.5～140.1MPa，平均孔径为1.2～1.8μm，孔隙率14.8～16.0％，含油率13.5～14.2％，含油保持率91.3～92.8％，含油保持架摩擦系数0.04～0.05，含油保持架磨损量0.22～0.28mm 3，多孔酚醛胶木保持架材料的性能具有较高的一致性，显著提高了产品的可靠性。 The performance of the porous phenolic bakelite cage material produced in batches according to the method of Example 4 is tested (test method is the same as the experimental example), the radial tensile strength is 134.5～140.1MPa, the average pore diameter is 1.2～1.8 μm, and the porosity is 14.8 ～16.0%, oil content 13.5～14.2%, oil retention rate 91.3～92.8%, oil cage friction coefficient 0.04～0.05, oil cage wear 0.22～0.28mm 3 , porous phenolic bakelite cage material has high performance Consistency, significantly improving product reliability.

Claims (16)

  1. 多孔酚醛胶木保持架材料的制备方法，其特征在于：包括以下步骤：The preparation method of porous phenolic bakelite cage material is characterized in that: comprising the following steps:
    提供胶布，所述胶布包括棉布和浸渍在棉布上的化学发泡体系和甲阶酚醛树脂；providing adhesive plasters, said adhesive plasters comprising cotton cloth and chemical foaming system and resole phenolic resin impregnated on the cotton cloth;
    将胶布进行烘干处理至可溶性树脂的含量为80～95％，然后卷绕成管状或环状，再进行固化处理，即得；The adhesive cloth is dried until the content of the soluble resin is 80-95%, then wound into a tube or ring, and then cured to obtain the final product;
    所述固化处理为先在80℃～90℃保温1～2h，然后在100℃～110℃保温1～2h，再在120℃～130℃保温1～2h，最后在140℃～150℃保温4～6h。The curing treatment is to firstly keep warm at 80°C-90°C for 1-2h, then keep warm at 100°C-110°C for 1-2h, then keep warm at 120°C-130°C for 1-2h, and finally keep warm at 140°C-150°C for 4 hours. ~6h.
  2. 根据权利要求1所述的多孔酚醛胶木保持架材料的制备方法，其特征在于：所述甲阶酚醛树脂的重均分子量为200～600，比重为1.50～1.70，粘度为16～20s。The preparation method of the porous phenolic bakelite cage material according to claim 1, characterized in that: the weight average molecular weight of the resole phenolic resin is 200-600, the specific gravity is 1.50-1.70, and the viscosity is 16-20s.
  3. 根据权利要求1或2所述的多孔酚醛胶木保持架材料的制备方法，其特征在于：所述烘干处理将所述胶布依次在30℃～60℃、80℃～100℃、90℃～110℃进行干燥。According to the preparation method of porous phenolic bakelite cage material according to claim 1 or 2, it is characterized in that: in the drying treatment, the adhesive plaster is sequentially heated at 30°C-60°C, 80°C-100°C, 90°C-110°C, °C for drying.
  4. 根据权利要求1所述的多孔酚醛胶木保持架材料的制备方法，其特征在于：所述化学发泡体系的发泡温度为80℃～130℃。The preparation method of the porous phenolic bakelite cage material according to claim 1, characterized in that: the foaming temperature of the chemical foaming system is 80°C to 130°C.
  5. 根据权利要求1或2所述的多孔酚醛胶木保持架材料的制备方法，其特征在于：烘干处理后胶布中胶的质量百分含量为42～52％。The preparation method of the porous phenolic bakelite cage material according to claim 1 or 2, characterized in that the mass percentage of the glue in the tape after drying treatment is 42-52%.
  6. 根据权利要求1所述的多孔酚醛胶木保持架材料的制备方法，其特征在于，所述棉布的纱线细度为40N以上。The preparation method of the porous phenolic bakelite cage material according to claim 1, wherein the yarn fineness of the cotton cloth is above 40N.
  7. 根据权利要求6所述的多孔酚醛胶木保持架材料的制备方法，其特征在于，所述棉布的纱线细度为40N、60N、80N、100N或120N。The preparation method of the porous phenolic bakelite cage material according to claim 6, wherein the yarn fineness of the cotton cloth is 40N, 60N, 80N, 100N or 120N.
  8. 根据权利要求6或7所述的多孔酚醛胶木保持架材料的制备方法，其特征在于，所述棉布为平纹棉布或斜纹棉布。The preparation method of the porous phenolic bakelite cage material according to claim 6 or 7, wherein the cotton cloth is plain cotton cloth or twill cotton cloth.
  9. 根据权利要求1所述的多孔酚醛胶木保持架材料的制备方法，其特征在于：所述胶布采用包括以下步骤的方法制得：将棉布依次在化学发泡体系浸渍液、甲阶酚醛树脂胶液中进行浸渍处理，即得；所述甲阶酚醛树脂胶液主要由甲阶酚醛树脂和醇类溶剂混合得到；所述醇类溶剂与甲阶酚醛树脂质量的20～50％。The preparation method of the porous phenolic bakelite cage material according to claim 1, characterized in that: the adhesive plaster is obtained by the method comprising the following steps: soaking the cotton cloth in the chemical foaming system impregnating solution and the resole phenolic resin glue solution successively The resole phenolic resin glue solution is mainly obtained by mixing the resole phenolic resin and an alcohol solvent; the alcohol solvent and the resole phenolic resin make up 20-50% of the mass.
  10. 根据权利要求1或4或9所述的多孔酚醛胶木保持架材料的制备方法，其特征在于：所述化学发泡体系包括化学发泡剂和发泡助剂，所述化学发泡剂选自偶氮二异丁腈、偶氮二甲酰胺、N,N′-二亚硝基五次甲基四胺、4,4′-氧代双苯磺酰肼中的一种或任意组合；所述发泡助剂选自碳酸氢钠、碳酸铵、氧化锌、硬脂酸锌、亚硝酸铵、水杨酸、苯甲酸、碳酰胺中的一种或任意组合。According to the preparation method of the porous phenolic bakelite cage material described in claim 1 or 4 or 9, it is characterized in that: the chemical foaming system includes a chemical foaming agent and a foaming aid, and the chemical foaming agent is selected from One or any combination of azobisisobutyronitrile, azodicarbonamide, N,N'-dinitrosopentamethylenetetramine, 4,4'-oxobisbenzenesulfonylhydrazide; The foaming aid is selected from one or any combination of sodium bicarbonate, ammonium carbonate, zinc oxide, zinc stearate, ammonium nitrite, salicylic acid, benzoic acid, and carbonamide.
  11. 根据权利要求10所述多孔酚醛胶木保持架材料的制备方法，其特征在于：所述化 学发泡剂为N,N′-二亚硝基五次甲基四胺和/或4,4′-氧代双苯磺酰肼，所述发泡助剂为碳酰胺和/或苯甲酸；所述化学发泡剂与发泡助剂的质量比为(1.5～2.5):1。According to the preparation method of the porous phenolic bakelite cage material according to claim 10, it is characterized in that: the chemical foaming agent is N,N'-dinitrosopentamethylenetetramine and/or 4,4'- Oxybisbenzenesulfonyl hydrazide, the foaming aid is carbonamide and/or benzoic acid; the mass ratio of the chemical blowing agent to the foaming aid is (1.5～2.5):1.
  12. 根据权利要求11所述的多孔酚醛胶木保持架材料的制备方法，其特征在于，所述化学发泡剂为N,N′-二亚硝基五次甲基四胺，所述发泡助剂为碳酰胺；或所述化学发泡剂为4,4′-氧代双苯磺酰肼，所述发泡助剂为苯甲酸。The preparation method of porous phenolic bakelite cage material according to claim 11, characterized in that, the chemical foaming agent is N,N'-dinitrosopentamethylenetetramine, and the foaming aid is carbonamide; or the chemical foaming agent is 4,4'-oxobisbenzenesulfonyl hydrazide, and the foaming aid is benzoic acid.
  13. 根据权利要求1所述的多孔酚醛胶木保持架材料的制备方法，其特征在于：所述甲阶酚醛树脂采用包括以下步骤的方法制得：将苯酚与甲醛以1:1.1～1.2的摩尔比于60℃～80℃的温度下在碱性催化剂的作用下反应60～90min，脱水，即得。The preparation method of porous phenolic bakelite cage material according to claim 1, characterized in that: the resole phenolic resin is obtained by a method comprising the following steps: mixing phenol and formaldehyde in a molar ratio of 1:1.1 to 1.2 React at a temperature of 60°C to 80°C for 60 to 90 minutes under the action of a basic catalyst, and dehydrate to obtain the product.
  14. 根据权利要求1所述的多孔酚醛胶木保持架材料的制备方法，其特征在于：固化处理过程中，升温至80℃～90℃的时间为20min～50min，由80℃～90℃升温至100℃～110℃的时间为10min～20min，由100℃～110℃升温至120℃～130℃的时间为10min～20min，由120℃～130℃升温至140℃～150℃的时间为10min～20min。The preparation method of porous phenolic bakelite cage material according to claim 1, characterized in that: during the curing process, the time for heating to 80°C-90°C is 20min-50min, and the temperature is raised from 80°C-90°C to 100°C The time for ～110℃ is 10min～20min, the time for heating from 100℃～110℃ to 120℃～130℃ is 10min～20min, the time for heating from 120℃～130℃ to 140℃～150℃ is 10min～20min.
  15. 采用如权利要求1～14中任意一项所述的多孔酚醛胶木保持架材料的制备方法制得的多孔酚醛胶木保持架材料。The porous phenolic bakelite cage material prepared by the method for preparing the porous phenolic bakelite cage material according to any one of claims 1-14.
  16. 采用如权利要求15所述的多孔酚醛胶木保持架材料制备的轴承保持架。The bearing cage prepared by using the porous phenolic bakelite cage material according to claim 15.
PCT/CN2021/132326 2021-11-23 2021-11-23 Porous phenolic bakelite cage material and preparation method therefor, and bearing cage WO2023092259A1 (en)

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Citations (5)

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CN101294603A (en) * 2007-04-27 2008-10-29 洛阳轴研科技股份有限公司 Porous metlbond adhesive tape laminating holder material for rolling bearing and production method thereof
CN103101199A (en) * 2012-11-07 2013-05-15 洛阳轴研科技股份有限公司 Preparation method of composition material for ball bearing retainer
WO2015108141A1 (en) * 2014-01-17 2015-07-23 Ntn株式会社 Retainer for rolling bearing, manufacturing method thereof, and rolling bearing
CN108068229A (en) * 2017-12-12 2018-05-25 中国航发哈尔滨轴承有限公司 A kind of phenolic resin adhesive plaster coating method for being used to manufacture retainer
CN113121951A (en) * 2021-04-21 2021-07-16 中国科学院兰州化学物理研究所 Porous phenolic cloth pipe and preparation method and application thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101294603A (en) * 2007-04-27 2008-10-29 洛阳轴研科技股份有限公司 Porous metlbond adhesive tape laminating holder material for rolling bearing and production method thereof
CN103101199A (en) * 2012-11-07 2013-05-15 洛阳轴研科技股份有限公司 Preparation method of composition material for ball bearing retainer
WO2015108141A1 (en) * 2014-01-17 2015-07-23 Ntn株式会社 Retainer for rolling bearing, manufacturing method thereof, and rolling bearing
CN108068229A (en) * 2017-12-12 2018-05-25 中国航发哈尔滨轴承有限公司 A kind of phenolic resin adhesive plaster coating method for being used to manufacture retainer
CN113121951A (en) * 2021-04-21 2021-07-16 中国科学院兰州化学物理研究所 Porous phenolic cloth pipe and preparation method and application thereof

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