CN101760019A - Low-temperature resistant and shock resistant nylon material - Google Patents
Low-temperature resistant and shock resistant nylon material Download PDFInfo
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- CN101760019A CN101760019A CN200910172746A CN200910172746A CN101760019A CN 101760019 A CN101760019 A CN 101760019A CN 200910172746 A CN200910172746 A CN 200910172746A CN 200910172746 A CN200910172746 A CN 200910172746A CN 101760019 A CN101760019 A CN 101760019A
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Abstract
The invention relates to the field of polyamide composite, in particular to a low-temperature resistant and shock resistant nylon material. The low-temperature resistant and shock resistant nylon material is composed of the following raw materials in percentage by weight: 68-85% of nylon 66 slice, 14.2-30% of compatilizer, 0.1-0.7% of antioxygen and 0.7-1.5% of lubricating agent. The preparation method comprises the following steps: 1. weighing the raw materials; 2. mixing all the raw materials in a high mixing machine; and 3. putting the mixed raw materials in a double-screw extruder to extrude and prill. The compatilizer is ethylene-propylene-diene monomer (EPDM) grafting, the antioxygen is 1098 or 168 or 1010, and the lubricating agent is calcium stearate or talcum powder or TAF or EBS. The invention has the beneficial effects that the heating capability and the bearing strength of a product are improved after heat stabilizer and silicone powder are added, and self-lubricating property and appearance gloss are favorable.
Description
Technical field
The present invention relates to polyamide composition field, particularly a kind of low-temperature resistant and shock resistant nylon material, said composition material are mainly used in produces the railway baffle plate.
Background technology
Polymeric amide is commonly called as nylon (Nylon), English name Polyamide (be called for short PA), be contain on the molecular backbone chain recurring amide radical group-[NHCO]-the thermoplastic resin general name.Comprise aliphatics PA, fat-aromatic series PA and aromatic series PA.Wherein, aliphatics PA is wide in variety, and output is big, is widely used, and its name is decided by the concrete carbonatoms of synthon.Nylon is most important engineering plastics, and output ranks first in five big general engineering plastic, and nylon is that tynex (polyamide fibre) is a kind of saying. can be made into long fibre or short fiber.
Nylon is that a scientific research group under outstanding scientist's Tomas Carothers (Carothers) of the U.S. and the leader thereof develops, and is the first kind of synthon that occurs in the world.The appearance of nylon makes assuming an entirely new aspect of textiles, and the synthetic of it is the important breakthrough of synthetic fiber industry, also is an important milestone of polymer chemistry simultaneously.
Principal item in the nylon is nylon 6 and nylon 66, accounts for absolute dominant position.Nylon 66 slice is a kind of thermoplastic polyester, has intensity height, wear-resisting, anti-solvent, an advantage such as self lubricity is good and the use temperature scope is wide, is purposes one of engineering plastics more widely.But also have the water-intake rate height, heat-drawn wire is low, and the shortcoming that modulus is low has limited its application.Usually adopt filling-modified method to improve its dimensional stability and raising rigidity, as use inorganics filled nylon 66 such as glass fibre, carbon fiber, kaolin, talcum can improve intensity, modulus, the thermotolerance of material, but caused particularly impelling strength decline of the strength of materials simultaneously, and, make the proportion of matrix material increase substantially because the loading level of inorganics is very big.
Now used railway barrier material generally adopts nylon 66 to be base-material, but not low temperature resistant, shock strength is not high, low temperature resistant generally subzero tens degree of ability only.
Summary of the invention
Purpose of the present invention is exactly the defective that overcomes prior art, and the employing Nylon 66 is a matrix, makes a kind of low temperature resistant (40 ℃) shock resistance nylon material, is applicable to low temperature resistant railway barrier material.
Technical scheme of the present invention is achieved in that
A kind of low-temperature resistant and shock resistant nylon material, it contains nylon 66 slice, and its characteristics are: it also contains compatilizer, oxidation inhibitor and lubricant, and the mass percent of each component is:
Nylon 66 slice 68%～85%
Compatilizer 14.2%～30%
Oxidation inhibitor 0.1%～0.7%
Lubricant 0.7%～1.5%
Its preparation method may further comprise the steps:
The first step: take by weighing above-mentioned described raw material by above-mentioned quality proportioning;
Second step: except that glass fibre, other raw materials were put into high-speed mixer and mixing 2～3 minutes;
The 3rd step: mixed raw materials is put into twin screw extruder, and the screw speed during twin screw extruder work is 250～350 rev/mins, and temperature is 270～300 ℃, extruding pelletization.
Technical scheme of the present invention can be achieved in that a kind of low-temperature resistant and shock resistant nylon material, and the relative viscosity of described nylon 66 slice is 2.4～3.9.
Technical scheme of the present invention can also be achieved in that a kind of low-temperature resistant and shock resistant nylon material, and described compatilizer is the terpolymer EP rubber grafting.
Technical scheme of the present invention can also be achieved in that a kind of low-temperature resistant and shock resistant nylon material, and described oxidation inhibitor is 1098 or 168 or 1010.
Technical scheme of the present invention can also be achieved in that a kind of low-temperature resistant and shock resistant nylon material, and described lubricant is calcium stearate or talcum powder or TAF or EBS.
The terpolymer EP rubber grafting can improve the consistency of Nylon 66 in the composition as compatilizer, and good weathering resistance, wear resistance and high impact strength are arranged.Terpolymer EP rubber is the terpolymer of ethene, propylene and non-conjugated diene hydrocarbon, and 1963 begin to commercially produce.Diolefine has special structure, has only the ability copolymerization of one of two keys, and undersaturated pair of key mainly is as the interlinkage place.Another is undersaturated can not to become main polymer chain, only can become the avris chain.The main polymer chain of terpolymer EP rubber is fully saturated.This characteristic makes terpolymer EP rubber can resist heat, light, oxygen, especially ozone.Terpolymer EP rubber is non-polar in essence, and polar solvent and chemicals are had erosion-resistant ability, and water-intake rate is low, has the good insulation performance characteristic.Because terpolymer EP rubber belongs to polyolefine family, it has fabulous vulcanization characteristics.In the middle of all rubber, it has minimum proportion.It can absorb a large amount of fillers and oil and influencing characteristic is little.Therefore can the cheap rubber compound of cost of manufacture.
Oxidation inhibitor can improve the nylon processing stability, avoids color and luster, and performance changes, and can be 168,1098,1010.Oxidation inhibitor 1098, chemical name: N, two [3-(3,5)-di-tert-butyl-hydroxy phenyl] the propionyl quadrols of N-, molecular formula: C
40H
64O
4N
2, molecular weight: 636.96, physico-chemical property: be dissolved in methyl alcohol and chloroform, be slightly soluble in toluene, water-soluble hardly, volatility is low, does not pollute, anti-extraction nontoxicity.Chemical index: outward appearance is white or off-white color, the crystalline solid powder, and main content 〉=99%, fusing point: 155～160 ℃, ash≤0.1%, fugitive constituent≤0.3%; Characteristic and purposes: oxidation inhibitor 1098 is phenols high performance universal oxidation inhibitor, do not pollute, nondiscoloration, anti-extraction, heat-resisting oxidation, anti-extraction, nontoxicity, be mainly used in the polymkeric substance such as nylon 6, nylon 66, polyethylene, polypropylene polymeric amide, polystyrene, ABS resin, urethane and rubber, also can be used the raising antioxygen property with auxiliary antioxidant.
Oxidation inhibitor 168, chemical name: three [2.4-di-tert-butyl-phenyl] phosphorous acid ester, molecular formula is C
42H
63O
3P is dissolved in methylene dichloride, chloroform, toluene, benzene, is slightly soluble in acetone, water-soluble hardly and methyl alcohol, and pure substance content 〉=99%, outward appearance is white free-pouring powder, odorlessness, melting range is: 183～186 ℃, density: 1.03g/cm
3, tap density: 0.48～0.57g/cm
3, flash-point: 257 ℃, burning-point: 380 ℃, pH value: 6, nontoxic, nonflammable, non-explosive, burn into excellent storage stability not.It is well behaved antioxidant, is widely used in polyethylene, polypropylene, polyoxymethylene, ABS resin, PS resin, PVC, engineering plastics, adhesive, rubber and petroleum products etc.In the product polymerization, make or final operational phase all can be added.
Antioxidant 1010 is a kind of polynary hindered phenol type antioxidant, has good consistency with most polymers.The good discoloration that light and heat causes that prevents is arranged.Be widely used in the macromolecular materials such as PE, PP, PS, polymeric amide, polyoxymethylene, ABS resin, PVC, synthetic rubber.Also be used for preventing the thermo-oxidative ageing of grease and coating.Chemical name: four [methyl-β-(3, the 5-di-tert-butyl-hydroxy phenyl) propionic ester] pentaerythritol ester, white powder, odorless, relative molecular mass 1177.65,119～123 ℃ of fusing points are dissolved in benzene, acetone, chloroform, are slightly soluble in ethanol, and are water insoluble.Pollution-free, not painted, volatility is little, water-fast extracting, excellent storage stability.
Lubricant is calcium stearate or talcum powder or TAF or EBS.The metallic salt of higher fatty acid (being commonly called as metallic soap) is a kind of in the conventional lubricants.Except that having lubrication, or the PVC thermo-stabilizer.Saponified for a certain metal, the carbochain of institute's bonded lipid acid is long more, and its oilness is good more.Commonly used have calcium stearate, Zinic stearas, lead stearate, a barium stearate etc.
The steatitic main component is the aqueous Petimin of talcum, and molecular formula is Mg
3[Si
4O
10] (OH)
2Talcum belongs to oblique system.Crystal is false six sides or rhombohedral sheet, and is accidental.Be generally fine and close bulk, foliated lamellar, radial, fibrous agrregate.Water white transparency or white, but present light green, pale yellow, shallow palm fibre even light red because of containing a spot of impurity; Be pearliness on the cleavage surface.Hardness 1, proportion 2.7～2.8.Good physics, chemical propertys such as talcum has oilness, anti-sticks, helps that stream, resistivity against fire, resistance to acid, insulativity, fusing point height, chemical torpescence, opacifying power are good, softness, good luster, adsorptive power are strong, because the steatitic crystal structure is to be lamellated, so have the trend that easily splits into scale and special slip, if Fe
2O
3The very high insulativity that then can lower it of content.Lubricant of the present invention can use talcum powder.
TAF is a kind of amides product of brand new, is particularly useful for resins such as PA, PBT, particularly more shows its good melting in the glass enhancing modified, and oilness is excellent and to the covering property (anti-exposing) and the surface-brightening of glass.White or faint yellow particle and Powdered, fusing point 〉=135 ℃, weight loss on heating≤0.5% (WT), color and luster≤5.0 (Gardner), acid number≤15.0koh mg/g, total amine value≤10.0koh mg/g, thermal weight loss (%WT) 250 ℃≤1.8,300 ℃≤4.2,344 ℃≤5.5.
The vinyl bis-stearamides also claims ethylene bis stearamide (EBS).Another name: ethylene bis stearamide, chemical name: N, N '-hexamethylene bis-stearamides, N, N-ethylene bis stearamide, English name: N, N-Ethylene Bis-stearamide, chemical formula: C
38H
76N
2O
2This compound is hard and crisp white high melting-point wax, its industrial goods are for being slightly yellowy fine particle, nontoxic, human body is had no side effect, be insoluble to most of solvents under the normal temperature, stable to soda acid and water medium, can be dissolved in the chlorinated hydrocarbons and the aromatic hydrocarbon solvent of heat, its meal soapy feeling is stronger, more than 80 ℃ glassware for drinking water is had wetting properties.Ethylene bis stearamide, it is the novel plastic lubricant that grows up recent years, be widely used in the PVC goods, ABS, high-impact polystyrene, polyolefine, rubber, in the forming process of plastics, it and traditional lubricant such as paraffin, polyethylene wax, lubricants such as stearate are compared, not only has good external lubrication effect, and has a good internal lubrication effect, make plastic shaping improve molten flowability and release property in processing every plastics, thereby improved the output of plastic working, reduced energy consumption, and made goods obtain high any surface finish, smoothness.This product, owing in its molecular structure, contain two amide group-C-NH-, thereby this product makes plastics have static electricity resistance preferably after adding plastics, makes plastics be difficult for " dust suction " and dirty.This valuable good characteristic is to being used for household electrical appliances and meter case and numerous engineering plastic products is even more important, and as lubricant, this product and other lubricant and usefulness have very significant synergy.Improve other composition, as tinting material, weighting agent dispersibility in plastics.
The invention has the beneficial effects as follows: added the ethylene-propylene diene copolymer grafting, it is not low temperature resistant well to have solved existing railway baffle plate, and the defective that shock strength is not high can low temperature resistant minimum reaching-40 ℃.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail:
Embodiment 1
Get raw material PA66 section 74g (viscosity is 2.6), terpolymer EP rubber grafting 25g, oxidation inhibitor is 1098 for 0.2g, calcium stearate 0.8g, all raw materials are put into high mixer mixed 2.5 minutes, then mixed raw materials is joined in the twin screw extruder, screw rod machine rotating speed is 280 rev/mins, processing temperature is 290 ℃, extruding pelletization.
Embodiment 2
Get raw material PA66 section 84g (viscosity is 2.8), terpolymer EP rubber grafting 15g, oxidation inhibitor is 168 for 0.3g, talcum powder 0.7g, all raw materials are put into high mixer mixed 3 minutes, then mixed raw materials is joined in the twin screw extruder, screw rod machine rotating speed is 300 rev/mins, processing temperature is 280 ℃, extruding pelletization.
Embodiment 3
Get raw material PA66 section 85g (viscosity is 3.0), terpolymer EP rubber grafting 14.2g, oxidation inhibitor is 1010 for 0.1g, TAF0.7g, all raw materials are put into high mixer mixed 2.5 minutes, then mixed raw materials is joined in the twin screw extruder, screw rod machine rotating speed is 350 rev/mins, processing temperature is 270 ℃, extruding pelletization.
Embodiment 4
Get raw material PA66 section 68g (viscosity is 3.5), terpolymer EP rubber grafting 30g, oxidation inhibitor is 1098 for 0.7g, EBS1.3g, all raw materials are put into high mixer mixed 3 minutes, then mixed raw materials is joined in the twin screw extruder, screw rod machine rotating speed is 330 rev/mins, processing temperature is 300 ℃, extruding pelletization.
The performance comparison that makes sample 1, sample 2, sample 3, sample 4 and refreshing horse engineering plastics same use product according to embodiment 1, embodiment 2, embodiment 3, embodiment 4 is as follows:
| Project | Sample 1 | Sample 2 | Sample 3 | Sample 4 | Refreshing horse engineering plastics |
| Tensile strength (Mpa) | ??55 | ??60 | ??61 | ??45 | ??54 |
| Elongation at break (%) | ??60 | ??60 | ??62 | ??60 | ??82 |
| Flexural strength (Mpa) | ??65 | ??80 | ??76 | ??43 | ??65 |
| Socle girder notched Izod impact strength (KJ/m 2) | ??60 | ??50 | ??49 | ??60 | ??55 |
| Heat-drawn wire (1.8Mpa) | ??65 | ??70 | ??68 | ??65 | ??60 |
| Low temperature resistant degree (℃) | ??-40 | ??-38 | ??-36 | ??-40 | ??-15 |
As can be seen from the above table, the present invention makes product like product superior performance than refreshing horse engineering plastics on resistance to low temperature.
Claims (5)
1. low-temperature resistant and shock resistant nylon material, it contains nylon 66 slice, it is characterized in that: it also contains compatilizer, oxidation inhibitor and lubricant, and the mass percent of each component is:
Nylon 66 slice 68%～85%
Compatilizer 14.2%～30%
Oxidation inhibitor 0.1%～0.7%
Lubricant 0.7%～1.5%
Its preparation method may further comprise the steps:
The first step: take by weighing above-mentioned described raw material by above-mentioned quality proportioning;
Second step: except that glass fibre, other raw materials were put into high-speed mixer and mixing 2～3 minutes;
The 3rd step: mixed raw materials is put into twin screw extruder, and the screw speed during twin screw extruder work is 250～350 rev/mins, and temperature is 270～300 ℃, extruding pelletization.
2. low-temperature resistant and shock resistant nylon material according to claim 1 is characterized in that: the relative viscosity of described nylon 66 slice is 2.4～3.9.
3. low-temperature resistant and shock resistant nylon material according to claim 1 is characterized in that: described compatilizer is the terpolymer EP rubber grafting.
4. low-temperature resistant and shock resistant nylon material according to claim 1 is characterized in that: described oxidation inhibitor is 1098 or 168 or 1010.
5. low-temperature resistant and shock resistant nylon material according to claim 1 is characterized in that: described lubricant is calcium stearate or talcum powder or TAF or EBS.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172746A CN101760019A (en) | 2009-11-27 | 2009-11-27 | Low-temperature resistant and shock resistant nylon material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910172746A CN101760019A (en) | 2009-11-27 | 2009-11-27 | Low-temperature resistant and shock resistant nylon material |
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| Publication Number | Publication Date |
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| CN101760019A true CN101760019A (en) | 2010-06-30 |
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|---|---|---|---|
| CN200910172746A Pending CN101760019A (en) | 2009-11-27 | 2009-11-27 | Low-temperature resistant and shock resistant nylon material |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588334A (en) * | 2012-03-05 | 2012-07-18 | 常州窦氏气动机械有限公司 | Blade for pneumatic water pump and preparation method for same |
| CN105400194A (en) * | 2015-12-22 | 2016-03-16 | 合肥仲农生物科技有限公司 | High-strength wear-resistant composite material |
| CN110305474A (en) * | 2019-06-21 | 2019-10-08 | 平顶山华邦工程塑料有限公司 | A kind of low temperature resistant flame retardant polyamide compoiste material and preparation method thereof |
| CN110746772A (en) * | 2019-10-21 | 2020-02-04 | 中山海明中科新材料有限公司 | Modified nylon 66 material and preparation method and application thereof |
| CN110922750A (en) * | 2019-11-29 | 2020-03-27 | 惠州市良化新材料有限公司 | Cold-resistant reinforced nylon 66 composition for baby carriage and preparation method thereof |
-
2009
- 2009-11-27 CN CN200910172746A patent/CN101760019A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102588334A (en) * | 2012-03-05 | 2012-07-18 | 常州窦氏气动机械有限公司 | Blade for pneumatic water pump and preparation method for same |
| CN105400194A (en) * | 2015-12-22 | 2016-03-16 | 合肥仲农生物科技有限公司 | High-strength wear-resistant composite material |
| CN110305474A (en) * | 2019-06-21 | 2019-10-08 | 平顶山华邦工程塑料有限公司 | A kind of low temperature resistant flame retardant polyamide compoiste material and preparation method thereof |
| CN110746772A (en) * | 2019-10-21 | 2020-02-04 | 中山海明中科新材料有限公司 | Modified nylon 66 material and preparation method and application thereof |
| CN110922750A (en) * | 2019-11-29 | 2020-03-27 | 惠州市良化新材料有限公司 | Cold-resistant reinforced nylon 66 composition for baby carriage and preparation method thereof |
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Open date: 20100630 |