CN101863102A - Method for preparing injection molded automobile seat sliding block product - Google Patents
Method for preparing injection molded automobile seat sliding block product Download PDFInfo
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- CN101863102A CN101863102A CN200910081978A CN200910081978A CN101863102A CN 101863102 A CN101863102 A CN 101863102A CN 200910081978 A CN200910081978 A CN 200910081978A CN 200910081978 A CN200910081978 A CN 200910081978A CN 101863102 A CN101863102 A CN 101863102A
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- sliding block
- parts
- seat sliding
- automobile seat
- injection molded
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Abstract
The invention relates to a method for preparing an injection molded automobile seat sliding block product. The sliding block product comprises the following components serving as raw materials in part by mass: 50 to 100 parts of polyamide, 0.2 to 5 parts of nano material, 0.2 to 0.5 part of antioxidant, 0.2 to 0.5 part of lubricant, 5 to 20 parts of one toughening material, 5 to 20 parts of the other toughening material, and 0.1 to 30 parts of reinforcing material. The method comprises the following steps of: uniformly mixing the materials in a high mixing machine, performing melt extrusion at the temperature of between 250 and 300 DEG C by using a double-screw extruder to obtain the material, adding the reinforcing material in the melt extrusion process, and performing injection molding at the temperature of between 250 and 300 DEG C to obtain the injection molded automobile seat sliding block product, wherein the impact strength of a simply supported beam reaches over 20kJ/m<2>, the melt flow rate is more than 4g/10min, the tensile strength is more than 120MPa, and the bending strength is more than 150MPa. The material is particularly suitable for manufacturing the automobile seat sliding block.
Description
Technical field
The present invention relates to a kind of method with PA 66 nano composite material injection molded automobile seat sliding block product, this composite prepares by the melt blending technology.
Background technology:
Polyamide 66 (PA 66, trade name nylon 66) is important general engineering plastic kind, and output and consumption occupy the engineering plastics first place always.Along with miniaturization, the lightweight of automobile, substituting metal material in the automobile with engineering plastics becomes for a period of time trend.This has proposed very high requirement to nylon 66 as aspects such as the intensity of structural material, hear resistance, cold resistance.For satisfying the needs of different automobile specified goods, with nylon 66 is matrix resin, adopt and add reinforcing material, interpolation grafting EPDM or POE, and dose methods such as various auxiliary agents, process by melt blending prepares modification of nylon 66 products, improve and improve the performances such as anti-flammability, lubricity, hear resistance, abrasion performance, water imbibition, electrical property and processing characteristics of nylon 66, scientific research institutions, each major company were more in the research in this field both at home and abroad in recent years.
In recent years, adopting nanometer composite technology to prepare polymer nanocomposites is becoming new polymer modification developing direction, and embodiment is also arranged in nylon 66 study on the modification more.We are adding reinforcing material, are adding on the basis of grafting EPDM and POE, increased by the homemade nano material of intercalation technique, and be aided with various auxiliary agents, process by melt blending has prepared enhancing toughened Nylon 66 nano composite materials again, automobile specified part (seat sliding block) with this material manufacturing, performances such as its toughness, rigidity, processability are all good, meet customer requirements.
Summary of the invention:
Purpose of the present invention: toughness, hot strength and impact strength at common PA 66 (nylon 66) product are not high, can not satisfy the problem of automobile product needs, a kind of preparation method who is used for PA 66 (nylon 66) nano composite material of automobile seat sliding block is provided.
The present invention is to be matrix resin with polyamide 66 (PA 66, trade name nylon 66), has added nano material and reinforcing material, toughening material, nylon 66 nano composite materials of the method preparation by melt blending.It is characterized in that forming by nylon 66 matrix resins, nano material, toughening material, reinforcing material and other auxiliary agents, each mass fraction of forming is: nylon 66 50-100 parts, nano material 0.2-5 part, antioxidant is 0.2-0.5 part, lubricant is 0.2-0.5 part, two kinds of each 5-20 parts of toughening material, reinforcing material 0.1-30 part is added in melt extruding process.This material is used for injection molded automobile special purpose parts (seat sliding block) goods.
The present invention mainly comprises following content:
(1) nano material preparation
In reactor, add pure water to liquid level and be higher than thermometer probe, start agitator, revolution 800rpm.Pour into and cover holder soil, begin to heat up.When temperature of reaction kettle is raised to 70 ℃, kept 1 hour, slowly add intercalator.React more than 4 hours the cooling blowing.Again dilute with the pure water filter cake after the press filtration, making granularity with the spray dryer drying again is the above nano materials of 300 orders.
(2) strengthen the screening of toughening material and other auxiliary agents
Screening is applicable to that the reinforcing material of nylon 66 is filler (wollastonite, talcum powder, kaolin etc.) or various fibrous material (glass fibre, carbon fiber, aramid fiber) etc.The present invention selects the alkali-free glass fibre handled through the coupling agent surface impregnation reinforcing material as nylon 66 for use.
The selected toughening material of the present invention is a maleic anhydride grafts, be maleic anhydride graft rubber polymer and maleic anhydride graft elastomer base polymer, these two kinds of flexibilizer add simultaneously, mainly are that to take all factors into consideration the former toughening effect good but processing fluidity is slightly poor and latter's processing fluidity is good but characteristics that toughening effect is slightly poor.
Other auxiliary agents are meant the antioxidant that prevents nylon 66 process oxidative degradations, and improve nylon 66 and extrude the finished surface characteristic and regulate the lubricant of nylon 66 melt viscosities.
(3) melt extrude
With dried nylon 66 (refreshing horse group in table mountain or E.I.Du Pont Company) 50-100 part, nano material (our unit's self-control) 0.2-5 part, antioxidant 1010 meter 0.2-0.5 part, lubricant EBS meter 0.2-0.5 part, EPDM-g-MAH meter 5-20 part, POE-g-MAH meter 5-20 part is after high mixer mixes, adopt double screw extruder to melt extrude preparing product, reinforcing material 0.1-30 part is added in melt extruding process.
The process conditions of double screw extruder are:
Screw diameter: 58mm screw slenderness ratio: 40 main frame revolution: 200-300 change
Each distinguishes temperature: 250-300 ℃
(4) injection-molded item
(3) are obtained nylon 66 nano composite materials carry out injection mo(u)lding, injection temperature is 250-300 ℃, obtains automobile specified part (seat sliding block).
The addition of described intercalator is to ask native addition for being benchmark to cover, and per 100 parts are covered holder soil adding intercalator 0.5-5 parts.Described intercalator is at least a in PAMC, epichlorohydrin/dimethylamine condensation polymer, the poly-diethyl diallyl ammonium chloride.
Described reinforcing material is the alkali-free glass fibre of crossing through coupling agent treatment.
Describedly be used for toughness reinforcing maleic anhydride grafts for comprising maleic anhydride graft ethylene propylene diene rubber (EPDM-g-MAH) and maleic anhydride grafted ethene-1-octene copolymer (POE-g-MAH).
Described antioxidant is four [β-(3,5-di-tert-butyl-4-hydroxy phenyl) propylamine] pentaerythrite (commercial disignation antioxidant 1010).
Described lubricant is stearic bicine diester ethylenediamine (commercial disignation EBS).
Every index of the enhancing toughened Nylon 66 that the present invention is prepared is all tested by national standard.The gained result is as follows: press GB/T1043-93 test impact property, the simple beam impact strength breach reaches 20kJ/m
2More than; It is mobile to press the GB3682-83 test, and melt flow rate (MFR) is greater than 4g/10min; Press GB/T1040-92 test tensile property, hot strength is greater than 120MPa; Press GB/T9341-2000 test bending property, bending strength is greater than 150MPa.The automobile specified part made from this material (seat sliding block) meets customer requirements, has produced in batches and has supplied with user's use.
Description of drawings
The process flow diagram that Fig. 1 embodiment adopts.
The specific embodiment
The following examples are to set forth rather than limit category of the present invention.
Embodiment 1-4:
With nylon 66 resin, nano material, antioxidant 1010, lubricant EBS, EPDM-g-MAH, POE-g-MAH, after the high mixer high speed is mixed, add double screw extruder according to the steps of raw and auxiliary material proportioning in the table 1 by feeder; Glass fibre is added by double screw extruder first exhaust outlet.This extruder temperature is controlled at 250-300 ℃, after material is extruded through water-cooled, pelletizing, then drying, injection moulding batten, detect performance.
Embodiment steps of raw and auxiliary material proportioning such as table 1.
Each embodiment steps of raw and auxiliary material proportioning of table 1
| The raw and auxiliary material title | Proportioning 1 | Proportioning 2 | Proportioning 3 | Proportioning 4 |
| Nylon 66 | ??94 | ??79 | ??69 | ??59 |
| Nano material | ??5 | ??0.4 | ??0.4 | ??0.4 |
| ??EPDM-g-MAH | ??20 | ??5 | ||
| ??POE-g-MAH | ??5 | |||
| Glass fibre | ??30 | ??30 | ||
| Antioxidant is 1010 | ??0.5 | ??0.3 | ??0.3 | ??0.3 |
| Lubricant EBS | ??0.5 | ??0.3 | ??0.3 | ??0.3 |
Raw and auxiliary material manufacturer is as follows among the embodiment:
| Sequence number | The raw and auxiliary material kind | Manufacturer |
| ??1 | Nylon 66 | Table mountain refreshing horse group/E.I.Du Pont Company |
| ??2 | ??POE-g-MAH | Shenyang section is logical |
| ??3 | ??EPDM-g-MAH | The Nanjing letter of speeding |
| ??4 | Glass fibre | Megalith/Chongqing, Zhejiang is compound |
| ??5 | Antioxidant | The big east of a river, Switzerland vapour crust/Jilin |
| ??6 | Lubricant EBS | The big east of a river, Jilin |
| ??7 | Nano material | Self-control |
The embodiment sample detection result that respectively fills a prescription:
| Sequence number | Interventions Requested | Unit | Raw material | Proportioning 1 | Proportioning 2 | Proportioning 3 | Proportioning 4 |
| ??1 | Hot strength | ??MPa | ??75.07 | ??84.88 | ??42.99 | ??152.8 | ??121.2 |
| ??2 | Bending strength (6mm) | ??MPa | ??84.84 | ??101.3 | ??42.28 | ??196.2 | ??161.7 |
| ??3 | The simply supported beam notch shock | ??kJ/m 2 | ??18.37 | ??18.73 | ??62.30 | ??26.02 | ??22.06 |
| ??4 | Melt flow rate (MFR) | ??g/10min | ??10.34 | ??46.74 | ??0.78 | ??18.04 | ??4.48 |
Annotate: raw material refers to unmodified nylon 66 resin.
Nylon 66 nano composite materials that proportioning 4 is obtained are used for injection moulding, and injection temperature is 250-300 ℃, obtain automobile specified part (seat sliding block).
Respectively filling a prescription the sample detection result as can be known by embodiment: compares with nylon 66 raw materials, added the modification of nylon 66 of nano material, outward appearance is bright and clean, under the situation that keeps impact strength to remain unchanged, hot strength and bending strength all have raising to some extent, melt flow rate (MFR) increases substantially, and shows nano material and improves effect mobile and that strengthen; Add the modification of nylon 66 of toughening material, toughness (impact strength) has improved several times, and rigidity and flowability also are subjected to tangible influence simultaneously, add simultaneously two kinds of materials well balance the toughness and the flowability (processability) of composite; Added the modification of nylon 66 of glass fibre, rigidity improves obviously, and it is many that hot strength and bending strength have improved twice; Add nylon 66 nano composite materials (proportioning 4) of nano material, toughening material, reinforcing material simultaneously, well balance the rigidity and the toughness of composite, be applied to processing automobile special purpose parts (seat sliding block), obtained user's approval.
Claims (1)
1. the method for an injection molded automobile seat sliding block product is characterized in that:
Each components in mass portion number of raw material is: PA 66 50-100 part, and nano material 0.2-5 part, antioxidant is 0.2-0.5 part, lubricant is 0.2-0.5 part, two kinds of each 5-20 parts of toughening material, reinforcing material 0.1-30 part;
Described reinforcing material is through the surface-treated alkali-free glass fibre of coupling agent;
Described antioxidant is four [β-(3,5-di-tert-butyl-4-hydroxy phenyl) propylamine] pentaerythrite;
Described lubricant is the stearic bicine diester ethylenediamine;
Described toughening material is two kinds to be added simultaneously, is respectively maleic anhydride ethylene propylene diene rubber and maleic anhydride grafted ethene-1-octene copolymer;
The processing method of described nano material is: add pure water to liquid level and be higher than thermometer probe in reactor, start agitator, revolution 800rpm, pour into and cover holder soil, begin to heat up, when temperature of reaction kettle is raised to 70 ℃, kept 1 hour, slowly add intercalator, intercalator is a PAMC, the epichlorohydrin/dimethylamine condensation polymer, at least a in the poly-diethyl diallyl ammonium chloride, per 100 parts are covered holder soil and add intercalator 0.5-5 parts, reaction is more than 4 hours, the cooling blowing dilutes again with the pure water filter cake after the press filtration, and making granularity with the spray dryer drying again is the above nano materials of 300 orders;
Above-mentioned material after high mixer mixes, is melt extruded through double screw extruder and to make material, and extrusion temperature is 250-300 ℃, and reinforcing material adds in melt extruding process;
Adopt injection mo(u)lding to obtain injection molded automobile seat sliding block product, injection temperature is 250-300 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910081978A CN101863102A (en) | 2009-04-15 | 2009-04-15 | Method for preparing injection molded automobile seat sliding block product |
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|---|---|---|---|
| CN200910081978A CN101863102A (en) | 2009-04-15 | 2009-04-15 | Method for preparing injection molded automobile seat sliding block product |
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| CN101863102A true CN101863102A (en) | 2010-10-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417727A (en) * | 2011-11-24 | 2012-04-18 | 上海日之升新技术发展有限公司 | High and low temperature-resistant cycling glass fiber reinforcement polyamide 66 (PA66) composite material and production method thereof |
| CN104130571A (en) * | 2014-08-19 | 2014-11-05 | 南通瑞隆新材料有限公司 | Preparation method of reinforced and toughened nylon PA6 modified engineering plastic |
| CN104356644A (en) * | 2014-11-10 | 2015-02-18 | 浙江品诺新材料有限公司 | High-strength nylon ribbon for tying up construction reinforcing steel bars |
| CN114031932A (en) * | 2021-11-30 | 2022-02-11 | 江苏芬茂新材料科技有限公司 | Modified plastic particle for processing automobile seat |
-
2009
- 2009-04-15 CN CN200910081978A patent/CN101863102A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102417727A (en) * | 2011-11-24 | 2012-04-18 | 上海日之升新技术发展有限公司 | High and low temperature-resistant cycling glass fiber reinforcement polyamide 66 (PA66) composite material and production method thereof |
| CN104130571A (en) * | 2014-08-19 | 2014-11-05 | 南通瑞隆新材料有限公司 | Preparation method of reinforced and toughened nylon PA6 modified engineering plastic |
| CN104356644A (en) * | 2014-11-10 | 2015-02-18 | 浙江品诺新材料有限公司 | High-strength nylon ribbon for tying up construction reinforcing steel bars |
| CN114031932A (en) * | 2021-11-30 | 2022-02-11 | 江苏芬茂新材料科技有限公司 | Modified plastic particle for processing automobile seat |
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Application publication date: 20101020 |