CN100387654C - Process for preparing high-strength wearable polyamide 1012 - Google Patents
Process for preparing high-strength wearable polyamide 1012 Download PDFInfo
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- CN100387654C CN100387654C CNB2005100246233A CN200510024623A CN100387654C CN 100387654 C CN100387654 C CN 100387654C CN B2005100246233 A CNB2005100246233 A CN B2005100246233A CN 200510024623 A CN200510024623 A CN 200510024623A CN 100387654 C CN100387654 C CN 100387654C
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Abstract
The present invention relates to a process for preparing high-strength wearable polyamide 1012 produced by a twin-screw extruding machine. The compression ratio of the controlling parameters of the twin-screw extruding machine is four to one, long diameter rate is 35 to 1, the temperature of a material feeding section is from 200 to 220 DGE C, the temperature of a compressing section is from 240 to 270 DGE C, the temperature of a homogenizing and melting section is from 200 to 210 DGE C, and the rotary speed of screws is 600 turns/minute. Polymide 1012 is used as a base and is added with 20 to 40 weight portions of glass fibres, and 0.5 to 2 weight portions of EBS coupling agents. The diameter of the glass fibres is from 10 to 15 micrometers. Materials are added to the material feeding section and are homogenized and melted at the homogenizing section, and the materials are extruded out from a die opening in definite quantity and definite pressure and are cooled and cut into wire grains in three to five mm. The tensile strength of physical and mechanical properties of testing components is from 115 to 125MPa; the heat deformation temperature (load of 1.82MPa) is from 174 to 180 DGE C; modulus of elasticity in static bending is from 5.0 to 6 GPa; Taber abrasive wear is from 0.55 to 0.5 mg; the linear expansion coefficient is 3.23 to 4.23*10<-5>K<-1>, and water absorbability (23 DGE C, 24 hours) is from 7.9 mg to 8.9 mg.
Description
(1) technical field
The present invention relates to the preparation method of high strength, abrasion performance polymeric amide 1012, relate to the preparation method of long glass fiber-reinforced polyamide 1012 or rather.
(2) background technology
Well-known polyamide resin has many advantages, for example: good thermotolerance, moulded products appearance and dimensional stability etc., can carry out injection moulding, extrusion moulding and blow molding processing parts.Be widely used in automotive field, as make air inlet collecting tubule and various mechanical component etc.Long carbon chain nylon has that relative density is little, water-absorbent is low, dimensional stabilizing, resistance to low temperature are good, characteristics such as processing temperature wide ranges.Product has high impulse strength, wear-resisting, oil resistant, good electrical property and chemical-resistant.Polymeric amide 1012 is a kind of of long carbon chain nylon, and it has long carbon chain polymer characteristic, and performance is pliable and tough, excellent impact resistance.But be necessary to improve its use temperature, tensile strength and modulus are improved abrasion resistance, expand its purposes.Use for reference the way of other nylon, useable glass fiber, potassium titanate single crystal fibre, carbon fiber and filling mica and other inorganic fillings improve its rigidity and wear resistant.At prior art JP10-338808 A2, among 22 Dec.1998, once mentioned that the high nylon resin of (a) composition can select nylon 1012, (b) nylon 6 or nylon 66 mixes and forms (A) compositions, again with (B) diameter be 5～15 microns glass fibre and (C) the composition cuprous iodide form resin combination.Yet the foregoing of this patent does not have the support of embodiment.There is not corresponding experimental data to characterize yet.
(3) summary of the invention
The objective of the invention is to improve tensile strength, modulus and the abrasion resistance of polymeric amide 1012 and the use temperature that improves polymeric amide 1012.Adopt the way of long glass fiber-reinforced polyamide 1012 to reach aforesaid purpose.
The present invention is 2.0～2.5 polymeric amide 1012 based on 100 weight parts of polyamide, 1012 relative viscosities, add 20～40 weight part glass fibre and 0.5～2 weight part coupling agent and form the constituent of polymeric amide 1012, through the twin screw extruder melting mixing, extrude, cooling, granulating, obtain high strength, abrasion performance polymeric amide 1012 plastics.
Coupling agent of the present invention is ethylenebis stearic amide (EBS), and this reagent not only plays coupling, crosslinked to glass fibre and polymeric amide 1012, and can make polymeric amide 1012 plastic part smooth surfaces, easy demoulding during model.
High strength, abrasion performance polymeric amide 1012 plastics manufacturing processedes are: polymeric amide 1012 and coupling agent are by the described proportioning of claim 1, be added to the feeding section of twin screw extruder from feeder, the temperature of this section is controlled at 200～220 ℃, compressed section to the matter homogenizing melt zone, here the temperature of compression section is 240～270 ℃, compression ratio is 4: 1, the temperature of homogenizing melt zone is 200～210 ℃, glass fibre is with the form of long filament, 10～15 microns of Fibre diameters, by 20～40 weight parts, enter forcing machine from homogenizing melting mixing section top side, in this section and polymeric amide 1012 and the even consolute of coupling agent, be wire and extrude from cross-head, cooling, pelletizing becomes 3～5 millimeters line granule products, the packing warehousing.
Twin screw extruder length-to-diameter ratio of the present invention is 35: 1, and screw speed is 600 rev/mins.
The performance of the high strength that the present invention makes, abrasion performance polymeric amide 1012 moulded piece is tensile strength 〉=100MPa, heat-drawn wire (1.82MPa load) is 175 ℃, bending elastic modulus 5.5GPa, Taibo (Taber) wear loss is 0.53mg, coefficient of linear expansion 3.23 * 10-
5K
-1, water-absorbent (23 ℃, 24h) 8.9mg, pure polymeric amide 1012 data corresponding with it are respectively 50MPa, and 57 ℃, 1.3GPa, 9.3mg, 1.15 * 10
-4K
-1, and 15.2mg.This shows that the present invention obtains tangible technique effect.
Especially exemplified by example it is described in order to implement the present invention better, but is not limitation of the present invention.
(4) embodiment
Embodiment 1
The mixture of 100 weight parts of polyamide 1012 and 1.3 weight part ethylenebis stearic amides (EBS) adds the feeding section of twin screw extruder from feed hopper, the temperature of screw zones is controlled to be 210 ℃ of feeding sections, 255 ℃ of compression sections, 205 ℃ of homogenizing zones, the screw compression ratio is 4: 1, length-to-diameter ratio is 35: 1, and screw speed is 600 rev/mins.Material transfers to the homogenizing melt zone for compressed section from feeding section, this moment, 30 weight part long glass fibres silks entered the homogenizing melt zone from homogenizing melt zone top side, the glass yarn diameter is 13 microns, all materials are in the evenly plasticizing of this section, and make its quantitatively, level pressure ground from die orifice extrude, cooling, pelletizing become 3～5 millimeters line grains, the packing warehousing.The physical and mechanical properties of product test specimen is tensile strength 120MPa, and heat-drawn wire (1.82MPa load) is 175 ℃, bending elastic modulus 5.5GPa, and Taibo (Taber) wear loss is 0.53mg, coefficient of linear expansion 3.23 * 10
-5K
-1, water-absorbent (23 ℃, 24h) 8.9mg.
Embodiment 2
The relative viscosity of removing polymeric amide 1012 is 2.0, the EBS add-on is 0.5 weight part, the glass add-on is 20 weight parts, 10 microns of glass diameters, screw rod feeding section temperature is 200 ℃, the compression section temperature is 240 ℃, homogenizing zone is outside 200 ℃, other operation steps and controlled variable and embodiment 1 are just the same, product test specimen performance is tensile strength 115MPa as a result, and heat-drawn wire (1.82MPa load) is 174 ℃, bending elastic modulus 5.0GPa, Taibo (Taber) wear loss is 0.55mg, coefficient of linear expansion 4.23 * 10
-5K
-1, water-absorbent (23 ℃, 24h) 8.0mg,
Embodiment 3
The relative viscosity of removing polymeric amide 1012 is 2.5, and the EBS add-on is 2 weight parts, and the glass add-on is 40 weight parts, 15 microns of glass diameters, 220 ℃ of screw rod feeding section temperature, 270 ℃ of compression section temperature, homogenizing zone is outside 210 ℃, other operation steps and controlled variable and embodiment 1 are just the same, product test specimen performance is tensile strength 125MPa as a result, and heat-drawn wire (1.82MPa load) is 180 ℃, bending elastic modulus 6GPa, Taibo (Taber) wear loss is 0.5mg, coefficient of linear expansion 4.0 * 10
-5K
-1, water-absorbent (23 ℃, 24h) 7.9mg.
Claims (3)
1. the preparation method of high strength, abrasion performance polymeric amide 1012, it is characterized in that: be 2.0～2.5 polymeric amide 1012 based on 100 weight part relative viscosities, the coupling agent that adds 20～40 weight part glass fibre and 0.5～2 weight part is formed the constituent of polymeric amide 1012, through the twin screw extruder melting mixing, extrude, cooling, granulating, obtain high strength, abrasion performance polymeric amide 1012 plastics; Described coupling agent is the ethylenebis stearic amide.
2. high strength according to claim 1, the preparation method of abrasion performance polymeric amide 1012, it is characterized in that: preparation process is polymeric amide 1012 and coupling agent ethylenebis stearic amide proportioning according to claim 1, be added to the feeding section of twin screw extruder from feeder, the temperature of feeding section is controlled at 200～220 ℃, compressed section to the matter homogenizing fusion section of closing, here the temperature of compression section is 240～270 ℃, compression ratio is 4: 1, the temperature of homogenizing melting mixing section is 200～210 ℃, glass fibre is with the form of long filament, 10～15 microns of Fibre diameters, in 20～40 weight part ratios, enter forcing machine from homogenizing melting mixing section top side,, be wire and extrude from cross-head in this section and polymeric amide 1012 and the even consolute of coupling agent ethylenebis stearic amide, cooling, pelletizing becomes 3～5 millimeters line granule products.
3. the preparation method of high strength according to claim 1, durable abrasion polymeric amide 1012 is characterized in that described twin screw extruder length-to-diameter ratio is 35: 1, and screw speed is 600 rev/mins.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100246233A CN100387654C (en) | 2005-03-24 | 2005-03-24 | Process for preparing high-strength wearable polyamide 1012 |
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|---|---|---|---|
| CNB2005100246233A CN100387654C (en) | 2005-03-24 | 2005-03-24 | Process for preparing high-strength wearable polyamide 1012 |
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| CN1837286A CN1837286A (en) | 2006-09-27 |
| CN100387654C true CN100387654C (en) | 2008-05-14 |
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|---|---|---|---|
| CNB2005100246233A Expired - Fee Related CN100387654C (en) | 2005-03-24 | 2005-03-24 | Process for preparing high-strength wearable polyamide 1012 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103072253B (en) * | 2012-12-26 | 2014-12-10 | 江阴升辉包装材料有限公司 | Forming process suitable for thermoplasticity elastic body extrusion blow molding |
| CN103642226A (en) * | 2013-11-18 | 2014-03-19 | 安徽宜万丰电器有限公司 | Irradiation-resistant low-temperature-resistant modified nylon material for automobile plastic members |
| CN109608877B (en) * | 2018-11-16 | 2021-02-05 | 山东东辰瑞森新材料科技有限公司 | Reinforced nylon material for injection molding of product with high precision and complex structure and preparation method thereof |
| CN109705572A (en) * | 2018-12-29 | 2019-05-03 | 山东新升实业发展有限责任公司 | A kind of long carbon chain nylon wrist strap and preparation method thereof and purposes |
| CN111040440B (en) * | 2019-12-26 | 2022-10-28 | 广州市聚赛龙工程塑料股份有限公司 | Low-density high-wear-resistance nylon composite material and preparation method and application thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06100774A (en) * | 1992-09-21 | 1994-04-12 | Toray Ind Inc | Glass fiber-reinforced polyamide resin composition and molded product therefrom |
| JPH10330613A (en) * | 1997-05-30 | 1998-12-15 | Asahi Chem Ind Co Ltd | Glass fiber reinforced polyamide resin for welding |
| CN1417257A (en) * | 2001-11-02 | 2003-05-14 | 上海杰事杰新材料股份有限公司 | Glass fiber reinforced blow molded nylon |
| CN1554828A (en) * | 1999-11-05 | 2004-12-15 | Poly(vinyl alcohol) binder for calcium carbonate pigment |
-
2005
- 2005-03-24 CN CNB2005100246233A patent/CN100387654C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06100774A (en) * | 1992-09-21 | 1994-04-12 | Toray Ind Inc | Glass fiber-reinforced polyamide resin composition and molded product therefrom |
| JPH10330613A (en) * | 1997-05-30 | 1998-12-15 | Asahi Chem Ind Co Ltd | Glass fiber reinforced polyamide resin for welding |
| CN1554828A (en) * | 1999-11-05 | 2004-12-15 | Poly(vinyl alcohol) binder for calcium carbonate pigment | |
| CN1417257A (en) * | 2001-11-02 | 2003-05-14 | 上海杰事杰新材料股份有限公司 | Glass fiber reinforced blow molded nylon |
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| CN1837286A (en) | 2006-09-27 |
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