CN101173082A - Polyoxymethylene modified material - Google Patents
Polyoxymethylene modified material Download PDFInfo
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- CN101173082A CN101173082A CNA200610123194XA CN200610123194A CN101173082A CN 101173082 A CN101173082 A CN 101173082A CN A200610123194X A CNA200610123194X A CN A200610123194XA CN 200610123194 A CN200610123194 A CN 200610123194A CN 101173082 A CN101173082 A CN 101173082A
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- polyoxymethylene
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- oxidation inhibitor
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Abstract
The invention relates to a polyformaldehyde changing-characteristic material, which mainly consists of the following ingredients by weight part: 100 parts of polyformaldehydes, 0.1 to 0.5 parts of polyformaldehyde stabilizers, 0.4 to 0.8 parts of antioxidant agents, 0.1 to 0.5 parts of oxide, 0.2 to 0.5 parts of ultraviolet absorbers and 1.2 to 2.0 parts of toughened agents. The invention adopts a method of adding formaldehyde and polyformaldehyde stablizers during a processing procedure, and improves the processing procedure of the polyformaldehydes to ensure that the polyformaldehydes reduce decomposition during the processing procedure, thereby reducing the producing of irritant gas and reducing the hurt to a human body, moreover, the adding of toughened agents and stabilizers ensures that the mechanical property of polyformaldehyde is improved, a melt index and a yellow index have less change, thereby increasing the processibility time of the polyformaldehydes and reducing the production cost.
Description
Technical field
The present invention relates to a kind of modifying material, particularly a kind of polyoxymethylene modified material.
Background technology
Polyoxymethylene (Polyoxymethylene, write a Chinese character in simplified form POM) be the chain macromolecule compound that contains oxidation methylene radical chain link on a kind of main chain, be high-melting-point, the high-density of unprotected side chain, the thermoplastic engineering plastic of high crystalline, has excellent mechanical property, outstanding self lubricity, wear resistance and chemical proofing, rigidity is big, creep resistant and fatigability are good, and can in wide temperature range, keep mechanics, chemistry and the electrical property that it had, be in the engineering plastics near one of kind of metal, can be used to replace non-ferrous metal and alloy products such as aluminium, zinc.Polyoxymethylene can adopt methods such as injection, blowing, extrusion molding and rotational casting moulding to process, and is widely used in industries such as automotive industry, electric, household electrical appliance, precision instrument and building materials.With the high speed development of modern plastics industry, the consumption and the demand of whole world POM product increase rapidly, have become one of a kind of very important engineering plastics of the world today.
But, the impelling strength of polyoxymethylene is low, notch sensitivity is big, in the poor heat resistance, the course of processing easily shortcoming such as decompositions greatly limited its in each field expensive goods Application for Field particularly, so improve the decomposition of polyoxymethylene in the course of processing and just seem very important.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of polyoxymethylene modified material, its course of processing to polyoxymethylene is improved, and reducing the decomposition of polyoxymethylene in the course of processing, and the generation that can reduce course of processing moderate stimulation gas is to reduce the injury to human body.
For achieving the above object, the invention provides a kind of polyoxymethylene modified material, it mainly comprises following composition, is expressed as with parts by weight:
Polyoxymethylene 100;
Polyoxymethylene stablizer 0.1～0.5;
Oxidation inhibitor 0.4～0.8;
Oxide compound 0.1～0.5;
UV light absorber 0.2～0.5;
Toughner 1.0～2.0.
Wherein, described polyoxymethylene stablizer mainly contains: the free radical that generates in the various hindered phenolic oxidation inhibitor, seizure system; The various nitrogen compounds that contain as Dyhard RU 100, urea, trimeric cyanamide, hydrazide derivatives or polyamine etc., are caught formaldehyde by the addition reaction of the hydrogen PARA FORMALDEHYDE PRILLS(91,95) on its amido.
Described oxidation inhibitor is preferably oxidation inhibitor 245.
Described oxide compound is as the formaldehyde absorption agent, and it is preferably magnesium oxide, aluminum oxide etc.
Described toughner is preferably EVA, and it is the polymkeric substance of ethene and vinyl acetate between to for plastic.
Preferably, a kind of polyoxymethylene modified material provided by the invention, its component is expressed as with parts by weight:
Polyoxymethylene 100;
Trimeric cyanamide 0.1;
Oxidation inhibitor 245 0.4;
Magnesium oxide 0.1;
UV light absorber 0.2;
EVA 1.0。
Preferably, a kind of polyoxymethylene modified material provided by the invention, its component is expressed as with parts by weight:
Polyoxymethylene 100;
Trimeric cyanamide 0.3;
Oxidation inhibitor 245 0.5;
Magnesium oxide 0.3;
UV light absorber 0.4;
EVA 1.3。
Preferably, a kind of polyoxymethylene modified material provided by the invention, its component is expressed as with parts by weight:
Polyoxymethylene 100;
Trimeric cyanamide 0.5;
Oxidation inhibitor 245 0.8;
Magnesium oxide 0.5;
UV light absorber 0.4;
EVA 1.6。
In sum, the present invention adopts the method for adding formaldehyde absorption agent and polyoxymethylene stablizer in the course of processing, the course of processing to polyoxymethylene is improved, polyoxymethylene is reduced in the course of processing as far as possible to be decomposed, reduce the generation of irritant gas, reduction is to the injury of human body, and, because the adding of toughner and stablizer, make its polyoxymethylene mechanical property raising, melting index (MI), yellowness index (YI) all change not quite, increase the number of times processed of polyoxymethylene, reduced production cost.
Embodiment
Embodiment 1
Take by weighing following material by weight proportion:
Polyoxymethylene 100;
Trimeric cyanamide 0.1;
Oxidation inhibitor 245 0.4;
Magnesium oxide 0.1;
UV light absorber 0.2;
EVA 1.0。
Again above-mentioned materials is added in the high-speed mixer and mix, adopt exhaust twin screw extruder melting mixing, extruding pelletization, wherein screw speed is 30-100 rev/min, barrel temperature is 140-230 ℃, test the performance of gained polyoxymethylene modified material then, its result and the contrast of polyoxymethylene material performance are as shown in table 1:
Table 1: embodiment 1 gained finished product and the contrast of polyoxymethylene material performance
| Project | Testing standard | The polyoxymethylene raw material | Polyoxymethylene modified material |
| Impact property (KJ/M 2) | GB/T1843-1996 | 6.5 | 7.1 |
| Tensile property (MPa) | GB/T1040-1992 | 63 | 62.1 |
| Yellowness index (YI) | GB/T2409-1980 | 7.5 | 8.1 |
| Melt mass flow rate (g/10min) | GB/T3682-2000 | 9.0 | 10.2 |
Embodiment 2
Take by weighing following material by weight proportion:
Polyoxymethylene 100;
Trimeric cyanamide 0.3;
Oxidation inhibitor 245 0.5;
Magnesium oxide 0.3;
UV light absorber 0.4;
EVA 1.3。
Again above-mentioned materials is added in the high-speed mixer and mix, adopt exhaust twin screw extruder melting mixing, extruding pelletization, wherein screw speed is 30-100 rev/min, barrel temperature is 140-230 ℃, test the performance of gained polyoxymethylene modified material then, its result and the contrast of polyoxymethylene material performance are as shown in table 2:
Table 2: embodiment 2 gained finished products and the contrast of polyoxymethylene material performance
| Project | Testing standard | The polyoxymethylene raw material | Polyoxymethylene modified material |
| Impact property (KJ/M 2) | GB/T1843-1996 | 6.5 | 8.2 |
| Tensile property (MPa) | GB/T1040-1992 | 63 | 62.6 |
| Yellowness index (YI) | GB/T2409-1980 | 7.5 | 7.8 |
| Melt mass flow rate (g/10min) | GB/T3682-2000 | 9.0 | 9.4 |
Embodiment 3
Take by weighing following material by weight proportion:
Polyoxymethylene 100;
Trimeric cyanamide 0.5;
Oxidation inhibitor 245 0.8;
Magnesium oxide 0.5;
UV light absorber 0.4;
EVA 1.6。
Again above-mentioned materials is added in the high-speed mixer and mix, adopt exhaust twin screw extruder melting mixing, extruding pelletization, wherein screw speed is 30-100 rev/min, barrel temperature is 140-230 ℃, test the performance of gained polyoxymethylene modified material then, its result and the contrast of polyoxymethylene material performance are as shown in table 3:
Table 3: embodiment 3 gained finished products and the contrast of polyoxymethylene material performance
| Project | Testing standard | The polyoxymethylene raw material | Polyoxymethylene modified material |
| Impact property (KJ/M 2) | GB/T1843-1996 | 6.5 | 7.6 |
| Tensile property (MPa) | GB/T1040-1992 | 63 | 61.3 |
| Yellowness index (YI) | GB/T2409-1980 | 7.5 | 8.0 |
| Melt mass flow rate (g/10min) | GB/T3682-2000 | 9.0 | 10.7 |
Claims (8)
1. a polyoxymethylene modified material is characterized in that, mainly comprises following composition, is expressed as with parts by weight:
Polyoxymethylene 100;
Polyoxymethylene stablizer 0.1～0.5;
Oxidation inhibitor 0.4～0.8;
Oxide compound 0.1～0.5;
UV light absorber 0.2～0.5;
Toughner 1.0～2.0.
2. polyoxymethylene modified material according to claim 1 is characterized in that, described polyoxymethylene stablizer mainly contains: various hindered phenolic oxidation inhibitor; The various nitrogen compounds that contain are as Dyhard RU 100, urea, trimeric cyanamide, hydrazide derivatives or polyamine etc.
3. polyoxymethylene modified material according to claim 1 is characterized in that described oxidation inhibitor is preferably oxidation inhibitor 245.
4. polyoxymethylene modified material according to claim 1 is characterized in that, described oxide compound is as the formaldehyde absorption agent, and it is preferably magnesium oxide, aluminum oxide etc.
5. polyoxymethylene modified material according to claim 1 is characterized in that described toughner is preferably EVA, and it is the polymkeric substance of ethene and vinyl acetate between to for plastic.
6. according to each described polyoxymethylene modified material of claim 1 to 5, it is characterized in that its screening formulation is expressed as with parts by weight:
Polyoxymethylene 100;
Trimeric cyanamide 0.1;
Oxidation inhibitor 245 0.4;
Magnesium oxide 0.1;
UV light absorber 0.2;
EVA 1.0。
7. according to each described polyoxymethylene modified material of claim 1 to 5, it is characterized in that its screening formulation is expressed as with parts by weight:
Polyoxymethylene 100;
Trimeric cyanamide 0.3;
Oxidation inhibitor 245 0.5;
Magnesium oxide 0.3;
UV light absorber 0.4;
EVA 1.3。
8. according to each described polyoxymethylene modified material of claim 1 to 5, it is characterized in that its screening formulation is expressed as with parts by weight:
Polyoxymethylene 100;
Trimeric cyanamide 0.5;
Oxidation inhibitor 245 0.8;
Magnesium oxide 0.5;
UV light absorber 0.4;
EVA 1.6。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610123194XA CN101173082A (en) | 2006-10-31 | 2006-10-31 | Polyoxymethylene modified material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200610123194XA CN101173082A (en) | 2006-10-31 | 2006-10-31 | Polyoxymethylene modified material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101173082A true CN101173082A (en) | 2008-05-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA200610123194XA Pending CN101173082A (en) | 2006-10-31 | 2006-10-31 | Polyoxymethylene modified material |
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Cited By (4)
| 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 |
| CN102924862A (en) * | 2012-11-29 | 2013-02-13 | 开滦（集团）有限责任公司 | Polyformaldehyde modified material and preparation method thereof |
| CN104292551A (en) * | 2014-09-29 | 2015-01-21 | 苏州博利迈新材料科技有限公司 | Modified polyformaldehyde composite material and preparation method thereof |
| CN110062782A (en) * | 2016-12-19 | 2019-07-26 | 科思创德国股份有限公司 | The method for reducing the release of polyurethane foam |
-
2006
- 2006-10-31 CN CNA200610123194XA patent/CN101173082A/en active Pending
Cited By (5)
| 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 |
| CN102924862A (en) * | 2012-11-29 | 2013-02-13 | 开滦（集团）有限责任公司 | Polyformaldehyde modified material and preparation method thereof |
| CN104292551A (en) * | 2014-09-29 | 2015-01-21 | 苏州博利迈新材料科技有限公司 | Modified polyformaldehyde composite material and preparation method thereof |
| CN104292551B (en) * | 2014-09-29 | 2016-03-09 | 苏州博利迈新材料科技有限公司 | Improved polyoxymethylene composite and preparation method thereof |
| CN110062782A (en) * | 2016-12-19 | 2019-07-26 | 科思创德国股份有限公司 | The method for reducing the release of polyurethane foam |
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Open date: 20080507 |