CN101619155A - Wear-resistant and heat-resistant acetal resin - Google Patents
Wear-resistant and heat-resistant acetal resin Download PDFInfo
- Publication number
- CN101619155A CN101619155A CN200910144427A CN200910144427A CN101619155A CN 101619155 A CN101619155 A CN 101619155A CN 200910144427 A CN200910144427 A CN 200910144427A CN 200910144427 A CN200910144427 A CN 200910144427A CN 101619155 A CN101619155 A CN 101619155A
- Authority
- CN
- China
- Prior art keywords
- wear
- heat
- resisting
- silicone oil
- resistant
- Prior art date
- 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.)
- Pending
Links
Abstract
The invention provides wear-resistant and heat-resistant acetal resin which relates to wear-resistant and heat-resistant acetal resin without nitrogen elements, halogen elements and sulfur elements. A nitrogen-free thermal stabilization system and a halogen-free and sulfur-free lubrication system are added in daicel. When the attrition resistance and the thermal stabilization of the daicel are increased, the combustion smokiness and the combustion toxicity of the daicel are improved. The smoke density (flame combustion) conforms to a BSS 7238 standard of the Boeing Company in America. After the acetal resin is flamed, fluorine hydride, hudrogen cyanide, chlorine hydride, sulfur dioxide and nitronic acid compounds can not be detected, and carbon monoxide is controlled at a lower level, therefore, the acetal resin generates non-toxic gas in flame combustion, conforms to a BSS 7239 standard of the Boeing Company in America and is environment-friendly and nontoxic.
Description
Technical field
The present invention relates to polyformaldehyde resin, specially refer to wear-resisting, the heat-stable polyformaldehyde resin of nonnitrogenous element, halogen element and element sulphur.
Background technology
Before the present invention proposed, motor train unit train was extensive use of in railway transport of passengers, and the operation of bullet train also can very fast enforcement.No matter be the compartment or the limousine of motor train unit train, bullet train, and even some flyer all is to seal relatively, and has the space of higher density of personnel.In these spaces, often have the many objects that comprise seat, need turn round activity.Therefore for the material of those bearing and turning active revolution devices, have higher requirement.Certain mechanical property and good self-lubricating property not only will be arranged, and in fire prevention, press down cigarette and stop and also need good performance aspect the burning.The Chinese government has formally implemented mandatory standard GB 2286-public place fire-retardant product and assembly combustionproperty on July 1st, 2007 and has required and standard, in that incendivity, smokiness and the combustion toxicity of the bearing and turning active material of sealed space have all proposed strict requirement relatively.External airline, aircraft manufacturing company have also proposed higher standard-required to this.
Polyoxymethylene (POM) is to contain in the molecular backbone chain-CH
2The linear macromolecule polymkeric substance of 0-is the higher thermoplasticity engineering materials of a kind of high crystalline, fusing point.The high crystalline of polyoxymethylene, make it that specific tenacity and the specific rigidity more approaching with metallic substance be arranged, and can in-40 ℃～100 ℃ wide temperature range, keep favorable rigidity, its creep value is less with variation of temperature, even still keep creep resistance preferably under comparatively high temps.The high crystalline of polyoxymethylene has determined it to have excellent resistance to fatigue, and in thermoplastic engineering plastic, it has bigger safe range of stress intensity; The frictional coefficient of polyoxymethylene and anti-consumption are all very little, and limit PV value is bigger, are applicable to stand the position of sliding for a long time, and polyoxymethylene has the surface strength close with aluminium alloy, when using, do not need to make the effect that with lubricator can reach self-lubricating at the dynamic friction position, and noiselessness.
Although polyoxymethylene self has had good self-lubricating property, also need further to improve its rub resistance and wear resistant in some application scenario, more should be like this when particularly the pairing of polyoxymethylene product rubs.Normally adopt the method for adding lubricated component, be used to improve the rub resistance and the wear resistant of polyoxymethylene as tetrafluoroethylene, molybdenumdisulphide, graphite, machine oil etc.The poor heat stability of polyoxymethylene can discharge formaldehyde from depolymerization in the course of processing, this makes the polyoxymethylene mechanical properties decrease, and the while is contaminate environment again.Therefore,, improve the stability of its processing and use, can add oxidation inhibitor usually and inhale the aldehyde agent in order to improve the thermostability of polyoxymethylene.At present, the suction aldehyde agent of normal use is nitrogenous class additives such as Dyhard RU 100, trimeric cyanamide.In wear-resisting lubricating system that is added and heat stabilizing system, all contain elements such as nitrogen, cyanogen, fluorine, sulphur.If carry out flaming combustion, can produce hydrogen fluoride, prussic acid, hydrogenchloride, sulfurous gas, oxynitride, and produce a large amount of carbon monoxide, the deleterious gas-phase product that is produced can not meet corresponding standard, also limited the application of polyoxymethylene, lost a lot of use value in some occasion.
Summary of the invention
The technical problem to be solved in the present invention is to overcome deficiency of the prior art, provides a kind of and has added the new heat stabilizing system and the polyformaldehyde resin of wear-resisting lubricating system, thereby obtain polyformaldehyde resin heat-resisting, wear-resisting, environment-protecting asepsis.
The present invention is achieved by the following technical measures.A kind of wear-resisting, heat-stable polyformaldehyde resin comprises: 85～97 parts of polyoxymethylene (mass fraction, below all with); 0.2～2.0 part of no nitrogen class heat stabilizing system and Halogen do not have 2～10 parts of the lubricating systems of sulphur.
Described no nitrogen class heat stabilizing system is 0.01～1 part of alkaline earth metal oxide (mass fraction, below all with); C
8～C
300～5 part in one or more mixtures in the long carbochain carboxylate salt; 0.10～5 part in one or more mixtures in the phenolic antioxidant; And 0.1～5 part in one or more mixtures in the phosphite ester kind antioxidant; 0.05～2 part of UV light absorber.
Preferred no nitrogen class heat stabilizing system is; Magnesium oxide in the alkaline earth metal oxide; Calcium stearate in the long carbochain carboxylate salt, lithium stearate; Triglycol in the phenolic antioxidant is two-3-[3-tertiary butyl-4-hydroxy-5-aminomethyl phenyl] and acrylate (commercially available model: oxidation inhibitor 245); Four [methyl-β-(3.5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester (commercially available model: antioxidant 1010); Tricresyl phosphite in the phosphite ester kind antioxidant (2, the 4-di-tert-butyl-phenyl) ester; In the UV light absorber 3,5-di-tert-butyl-4-hydroxybenzoic acid 2,4-di-t-butyl phenyl ester.
Described wear-resisting lubricating system is: 1.0～5 parts in graphite (mass fraction, below all with); 1.5～5 parts in one or more mixtures in alkyl silicone oil (methyl-silicone oil, dimethyl silicone oil) and the functionalized silicone oil (hydroxy silicon oil, epoxy silicon oil); C
10～C
501～5 part of long-chain fat hydrocarbon; The long carbochain carboxylate salt of alkaline-earth metal and basic metal C
8～C
30In 0.5～5 part in one or more mixtures; 1～5 part of dioctyl sebacate.
Preferred wear-resisting lubricating system is: graphite; Dimethyl silicone oil in alkyl silicone oil or the functionalized silicone oil; Lithium stearate in the long carbochain carboxylate salt of alkaline-earth metal and alkaline-earth metal, calcium stearate; C
10～C
5012# diesel engine oil and dioctyl sebacate in the long-chain fat hydrocarbon.
After utility model of the present invention adopts abovementioned technology, wear-resisting, the heat-stable polyformaldehyde resin of nonnitrogenous first halogen element and element sulphur, not only kept the original performance of polyoxymethylene basically, improved its rub resistance polishing machine, the more important thing is not produce hydrogen fluoride, prussic acid, hydrogenchloride, sulfurous gas, nitronic acid compound when flaming combustion, the carbon monoxide content of generation is also extremely low.Thereby enlarged the use range of polyformaldehyde resin.
Embodiment
The present invention is further described below in conjunction with embodiment.
The following example mixes back melting mixing granulation in twin screw extruder with each component respectively, the gained pellet through pre-dried after injection molding, make the sample of 75mm*75mm*2-3mm, carry out the flaming combustion test according to the smokiness testing standard BSS7238 of Boeing Co. and Boeing Co.'s combustion toxicity testing standard BSS7239 standard, carry out the test of smoke density and combustion toxicity respectively.
Embodiment one
Polyoxymethylene 91.98 (mass fraction, below all with)
Phenolic antioxidant 1.5
Silicone oil 2.5
Graphite 3
Alkaline-earth metal fluoride 0.02
Stearate 1
The incendivity of this matrix material, smoke density, combustion toxicity meets respective standard.Fail to detect HF, HCN, HCL, SO
2, NOx, CO＜800ppm.Thermal weight loss (under air atmosphere 220 ± 1 ℃, weightless 10% time) 〉=3500s.Polyoxymethylene is to mill wear loss＜0.1mm.
Embodiment two:
Polyoxymethylene 88.1 (mass fraction, below all with)
Phenolic antioxidant 2
Silicone oil 3
Graphite 5
Alkaline earth metal oxide 0.1
UV light absorber 0.3
Stearate 1.5
The incendivity of this prescription matrix material, smoke density, combustion toxicity all meets respective standard.Fail to detect HF, HCN, HCL, SO
2, NO
x, CO＜1000ppm.Thermal weight loss (under air atmosphere 220 ± 1 ℃, weightless 10% time)＞5000s.Polyoxymethylene is to mill wear loss＜0.05mm
Embodiment three
Polyoxymethylene 93.6 (mass fraction, below all with)
Phenolic antioxidant 0.5
Silicone oil 1.5
Graphite 2
Stearate 0.4
C10-C50 long-chain fat hydrocarbon 2
The incendivity of this prescription matrix material, smoke density, combustion toxicity all meets respective standard.Fail to detect HF, HCN, HCL, SO
2, NO
x, CO＜1200ppm.Thermal weight loss (under air atmosphere 220 ± 1 ℃, weightless 10% time)＞1500s.Polyoxymethylene is to mill wear loss＜0.2mm
Comparative Examples
Polyoxymethylene 93 (mass fraction, below all with)
Fluorinated ethylene propylene 2
12# diesel oil 4.5
Oxidation inhibitor 0.25
Dyhard RU 100 0.25
In the combustion product gases of this prescription matrix material, all detect HF, HCN, HCL, SO
2, Nox.
Following table has been compiled the composition and the effect of the polyformaldehyde resin of the foregoing description:
| Form | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative Examples |
| Polyoxymethylene | ?91.98 | ??88.1 | ?93.6 | Polyoxymethylene 93 |
| Phenolic antioxidant | ?1.5 | ??2.0 | ?0.5 | Fluorinated ethylene propylene 2 |
| Silicone oil | ?2.5 | ??3.0 | ?1.5 | 12# diesel oil 4.5 |
| Graphite | ?3.0 | ??3.0 | ?2.0 | Oxidation inhibitor 0.25 |
| Alkaline earth metal oxide | ?0.02 | ??0.10 | ?----- | Dyhard RU 100 0.25 |
| Hard acid ester salt | ?1.0 | ??1.5 | ?0.4 | |
| UV light absorber | ?--- | ??0.3 | ?---- | ??---- |
| C10-C50 long-chain fat hydrocarbon | ?--- | ??--- | ?2.0 | |
| Smoke density Ds (4.0)≤200 | ??＜100 ??＜100 | ?＜150 | ||
| The combustion toxicity test | ?HF，HCN，HCL，SO2 ?NO xAll do not detect; CO＜800ppm | ??HF，HCN，HCL，SO2 ??NO xAll do not detect; CO＜1000ppm | ?HF，HCN，HCL，So2 ?NO xAll do not detect; CO＜1200ppm | The HF that exists in the combustion product gases, HCN, HCL, SO 2， ??NO xRegulation all is above standard |
As seen after adopting the lubricating system and heat stabilizing system of indication among the present invention, every performance (comprising thermostability) of polyformaldehyde resin is good, and abrasion resistance properties is excellent; Incendivity meets the FAR25.853 of US Federal Aviation Administration regulation, smoke density (flaming combustion) meets the BSS7238 of Boeing Co. standard, after the flaming combustion, hydrogen fluoride, prussic acid, hydrogenchloride, sulfurous gas, the nitronic acid compound is undetected, and carbon monoxide is controlled at lower level, shows that not having toxic gas when flaming combustion occurs, meet the BSS7239 of Boeing Co. standard, realized environment-protecting asepsis.
Above-described only is preferred implementation of the present invention.Should be pointed out that for the person of ordinary skill of the art under the prerequisite that does not break away from the principle of the invention, can also make some modification and improvement, these also should be considered as belonging to protection scope of the present invention.
Claims (5)
1. wear-resisting, a heat-stable polyformaldehyde resin is characterized in that: comprising: 85～97 parts of polyoxymethylene (mass fraction, down together); 0.2～2.0 part of no nitrogen class heat stabilizing system and Halogen do not have 2～10 parts of the lubricating systems of sulphur.
2. a kind of wear-resisting, heat-stable polyformaldehyde resin according to claim 1 is characterized in that: described no nitrogen class heat stabilizing system is an alkaline earth metal oxide; C
8-C
30One or more mixtures in the long carbochain carboxylate salt; One or more mixtures in the phenolic antioxidant; One or more mixtures in the phosphite ester kind antioxidant; UV light absorber.
3. a kind of wear-resisting, heat-stable polyformaldehyde resin according to claim 1 and 2 is characterized in that: described no nitrogen class heat stabilizing system is; Magnesium oxide in the alkaline earth metal oxide; Calcium stearate in the long carbochain carboxylate salt, lithium stearate; Triglycol in the phenolic antioxidant is two-3-[3-tertiary butyl-4-hydroxy-5-aminomethyl phenyl] and acrylate; Four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester; Tricresyl phosphite in the phosphite ester kind antioxidant (2, the 4-di-tert-butyl-phenyl) ester; In the UV light absorber 3,5-di-tert-butyl-4-hydroxybenzoic acid 2,4-di-t-butyl phenyl ester.
4. a kind of wear-resisting, heat-stable polyformaldehyde resin according to claim 1, it is characterized in that: described wear-resisting lubricating system is: graphite; One or more mixtures in alkyl silicone oil (methyl-silicone oil, dimethyl silicone oil) and the functionalized silicone oil (hydroxy silicon oil, epoxy silicon oil); C
10～C
50The long-chain fat hydrocarbon; The long carbochain carboxylate salt of alkaline-earth metal and basic metal C
8～C
30In one or more mixtures; Dioctyl sebacate.
5. according to claim 1 or 4 described a kind of wear-resisting, heat-stable polyformaldehyde resins, it is characterized in that: described wear-resisting lubricating system is: graphite; Dimethyl silicone oil in alkyl silicone oil or the functionalized silicone oil; Lithium stearate in the long carbochain carboxylate salt of alkaline-earth metal and alkaline-earth metal, calcium stearate; C
10～C
5012# diesel engine oil and dioctyl sebacate in the long-chain fat hydrocarbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910144427A CN101619155A (en) | 2009-08-07 | 2009-08-07 | Wear-resistant and heat-resistant acetal resin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910144427A CN101619155A (en) | 2009-08-07 | 2009-08-07 | Wear-resistant and heat-resistant acetal resin |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101619155A true CN101619155A (en) | 2010-01-06 |
Family
ID=41512574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910144427A Pending CN101619155A (en) | 2009-08-07 | 2009-08-07 | Wear-resistant and heat-resistant acetal resin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101619155A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344641A (en) * | 2010-08-02 | 2012-02-08 | 苏州工业园区鑫丰林塑料科技有限公司 | High cost performance POM |
| CN102382418A (en) * | 2010-09-06 | 2012-03-21 | 苏州工业园区鑫丰林塑料科技有限公司 | High wear-resistant lubricating plastic |
| CN103304954A (en) * | 2013-05-10 | 2013-09-18 | 苏州工业园区方圆金属制品有限公司 | Polyoxymethylene plastic plate |
| CN103740045A (en) * | 2013-12-26 | 2014-04-23 | 吴江市东泰电力特种开关有限公司 | Polyformaldehyde resin wear-resistant switch |
| CN103740044A (en) * | 2013-12-26 | 2014-04-23 | 吴江市东泰电力特种开关有限公司 | Polyformaldehyde wear-resistant switch |
| CN106235536A (en) * | 2016-08-24 | 2016-12-21 | 道晟拉链科技（太仓）有限公司 | A kind of preparation method of self-moistening type resin teeth zipper |
| US11485856B2 (en) | 2017-05-05 | 2022-11-01 | Ticona Llc | Polyoxymethylene polymer composition that is chemical resistant |
-
2009
- 2009-08-07 CN CN200910144427A patent/CN101619155A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102344641A (en) * | 2010-08-02 | 2012-02-08 | 苏州工业园区鑫丰林塑料科技有限公司 | High cost performance POM |
| CN102382418A (en) * | 2010-09-06 | 2012-03-21 | 苏州工业园区鑫丰林塑料科技有限公司 | High wear-resistant lubricating plastic |
| CN103304954A (en) * | 2013-05-10 | 2013-09-18 | 苏州工业园区方圆金属制品有限公司 | Polyoxymethylene plastic plate |
| CN103740045A (en) * | 2013-12-26 | 2014-04-23 | 吴江市东泰电力特种开关有限公司 | Polyformaldehyde resin wear-resistant switch |
| CN103740044A (en) * | 2013-12-26 | 2014-04-23 | 吴江市东泰电力特种开关有限公司 | Polyformaldehyde wear-resistant switch |
| CN103740044B (en) * | 2013-12-26 | 2016-01-20 | 南通玖伍捌科技企业孵化器有限公司 | A kind of Polyformaldehyde wear-resistant switch |
| CN103740045B (en) * | 2013-12-26 | 2016-05-18 | 吴江市东泰电力特种开关有限公司 | The wear-resisting switch of a kind of acetal resin |
| CN106235536A (en) * | 2016-08-24 | 2016-12-21 | 道晟拉链科技（太仓）有限公司 | A kind of preparation method of self-moistening type resin teeth zipper |
| US11485856B2 (en) | 2017-05-05 | 2022-11-01 | Ticona Llc | Polyoxymethylene polymer composition that is chemical resistant |
| US11939467B2 (en) | 2017-05-05 | 2024-03-26 | Ticona Llc | Polyoxymethylene polymer composition that is chemical resistant |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101619155A (en) | Wear-resistant and heat-resistant acetal resin | |
| US8044003B2 (en) | Grease composition | |
| JP6122191B1 (en) | Lubricating grease composition | |
| MY160060A (en) | Fuel composition with enhanced low temperature properties | |
| KR20060019550A (en) | Sliding bearing | |
| US20170343045A1 (en) | Rolling bearing | |
| JP4955321B2 (en) | Grease composition and bearing | |
| JP2003027079A (en) | Lubricating oil composition | |
| JP4866411B2 (en) | Oil-impregnated sliding material and slide bearing | |
| JP3965251B2 (en) | Polyacetal resin composition and sliding bearing used in copying machines, etc. | |
| JP2003176831A (en) | Rolling bearing | |
| JP6543120B2 (en) | Grease composition | |
| JP2000169738A (en) | Resin composition for sliding member and plain bearing | |
| EP3165590A1 (en) | Lubricant composition and lubricant composition-sealed bearing | |
| BR112022021409A2 (en) | HIGH PERFORMANCE GREASE COMPOSITIONS WITH RENEWABLE BASE OIL | |
| JP2006008818A5 (en) | ||
| Akl et al. | An experimental investigation of tribological performance of a lubricant using different nano additives | |
| JP5145696B2 (en) | Rolling device | |
| CN109321335A (en) | Height temperature lubricating grease | |
| RU2311447C1 (en) | Metal-plating lubricant | |
| Anderson et al. | Preliminary determinations of temperature limitations of ester, ether, and hydrocarbon base lubricants in 25-mm bore ball bearings | |
| RU2524267C1 (en) | Antifriction lubricant | |
| JP2003269618A (en) | Plastic seal | |
| WO2023157592A1 (en) | Cage for rolling bearing and rolling bearing incorporating cage | |
| JP2005281446A (en) | Tetrafluoroethylene resin composition and sliding member produced by using the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20100106 |