CN103772895A - Continuous aramid fiber-reinforced polyformaldehyde material and preparation method thereof - Google Patents
Continuous aramid fiber-reinforced polyformaldehyde material and preparation method thereof Download PDFInfo
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- CN103772895A CN103772895A CN201210411967.XA CN201210411967A CN103772895A CN 103772895 A CN103772895 A CN 103772895A CN 201210411967 A CN201210411967 A CN 201210411967A CN 103772895 A CN103772895 A CN 103772895A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/03—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor characterised by the shape of the extruded material at extrusion
- B29C48/04—Particle-shaped
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/9258—Velocity
- B29C2948/9259—Angular velocity
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92619—Diameter or circumference
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92609—Dimensions
- B29C2948/92638—Length
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92761—Mechanical properties
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/9298—Start-up, shut-down or parameter setting phase; Emergency shut-down; Material change; Test or laboratory equipment or studies
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Abstract
The invention provides a continuous aramid fiber-reinforced polyformaldehyde material and a preparation method thereof. The material comprises the following components according to a weight ratio: 40-60wt% of polyformaldehyde, 40-60% of aramid fiber, 0.2-0.6wt% of coupling reagent, 0.3-0.6wt% of antioxygen and 1.0-2.0wt% of lubricating agent. The preparation method comprises the following processing techniques: firstly blending the polyformaldehyde, the coupling reagent, the antioxygen and the lubricating agent; then adding the blend to a double-screw extruder to carry out melt extrusion through a special die head, wherein the processing temperature is 170-200 DEG C; carrying out preheating drying treatment on continuous aramid fiber; then converging with resin melt inside the die head, completely soaking a continuous aramid fiber bundle by the resin melt at a certain distance in the die head, and meanwhile coming out from the special die head; finally cooling, drying and dicing so as to obtain the continuous aramid fiber-reinforced polyformaldehyde material. The method is simple in process, easy to operate by production equipment and excellent in production performance.
Description
Technical field
The present invention relates to a kind of polyformaldehyde material, particularly continuous aramid fiber of strengthening and strengthen polyformaldehyde material and preparation method thereof, belong to polymeric material field.
Background technology
Polyoxymethylene is a kind of smooth surface, glossiness hard and fine and closely woven material, and intensity, rigidity are high, good springiness, and anti-attrition wear resistance is good.Polyoxymethylene mechanical property excellence, and vary with temperature littlely, specific tenacity, specific rigidity and metal are very approaching.Polyoxymethylene has excellent electrical insulating property simultaneously, is subject to hardly the impact of temperature and humidity, and specific inductivity and dielectric loss change very little in very wide temperature, humidity and range of frequency, and arc resistance is fabulous, and can at high temperature keep.The over-all properties that it is excellent, makes it be widely used in the numerous areas such as automotive industry, machinery manufacturing industry, electronic apparatus, household electrical appliance, precision instrument.Because polyformaldehyde material is large to notch sensitivity, make its application be obtained certain restriction.By adding aramid fiber to carry out modification to it, effectively improve its impelling strength, make other mechanical property be largely increased simultaneously, greatly widen the range of application of this material.
Summary of the invention
Because the toughness of aramid fiber is splendid, cannot shear it with conventional production process, production difficulty is large, causes it aspect modified plastics, to be restricted.The invention provides the preparation method that a kind of continuous aramid fiber strengthens polyformaldehyde material, efficiently solve the technical problem existing in conventional production process.
Preparation method of the present invention comprises the following steps:
(1), starting material polyoxymethylene, coupling agent, oxidation inhibitor, lubricant are joined in mixing machine by prescription quality percentage, evenly mix at normal temperatures;
(2), above-mentioned mixed material is joined in forcing machine charging basket, melt extrude by twin screw extruder.Extruder barrel processing temperature is set as 170～200 ℃, and main-machine screw rotating speed is 200～220r.min
-1, main feeding rotating speed is 10～15r.min
-1;
(3), continuous aramid fiber bundle is first carried out to drying treatment by open type baking oven, oven temperature is 80～90 ℃, then continuous aramid fiber is passed from special extruder die head, and forcing machine starts to melt extrude simultaneously.In die head, continuous aramid fiber is converged with the resin of completely melting, continuous aramid fiber in die head by scattered being completely infused in molten resin by force simultaneously.After a segment distance from special die head out; process spray-type water cooling plant carries out cooling, then through blower fan, material strip is carried out to drying treatment, under the traction of tractor; material strip is sent in dicing machine and carries out pelletizing, generate continuous aramid fiber and strengthen polyformaldehyde material.The concrete technological process of production as shown in Figure 1.
Below by specific embodiment, patent of the present invention is specifically described:
Embodiment 1:
According to mass percent, by 60 parts of kematals, 0.2 part of KH-550 coupling agent, 0.2 part of Hinered phenols antioxidant, 0.4 part of phosphite ester kind antioxidant, 1 part of stearic acid lubricant evenly mixes jointly in mixing machine, then mixture is poured in forcing machine charging basket.40 parts of continuous continuous aramid fiber 1313, by oven drying processing, oven temperature is 85 ℃, then continuous aramid fiber is passed from extruder die head, opens forcing machine simultaneously.Extruder barrel processing temperature is 170～200 ℃, and forcing machine is established eight sections altogether, and first paragraph and second segment are 175 ℃, and the 3rd section and the 4th section is 185 ℃, and other several sections is 195 ℃, and main-machine screw rotating speed is 210r.min
-1, main feeding rotating speed is 12r.min
-1.Molten resin will be extruded from die head after continuous aramid fiber thorough impregnation in die head, then through overcooling, air-dry, traction, pelletizing, can obtain continuous aramid fiber and strengthen polyformaldehyde material.
Embodiment 2:
According to mass percent, by 60 parts of kematals, 0.5 part of KH-550 coupling agent, 0.2 part of Hinered phenols antioxidant, 0.4 part of phosphite ester kind antioxidant, 1 part of stearic acid lubricant evenly mixes jointly in mixing machine, then mixture is poured in forcing machine charging basket.40 parts of continuous continuous aramid fiber 1414, by oven drying processing, oven temperature is 85 ℃, then continuous aramid fiber is passed from extruder die head, opens forcing machine simultaneously.Extruder barrel processing temperature is 170～200 ℃, and forcing machine is established eight sections altogether, and first paragraph and second segment are 175 ℃, and the 3rd section and the 4th section is 185 ℃, and other several sections is 195 ℃, and main-machine screw rotating speed is 210r.min
-1, main feeding rotating speed is 12r.min
-1.Molten resin will be extruded from die head after continuous aramid fiber thorough impregnation in die head, then through overcooling, air-dry, traction, pelletizing, can obtain continuous aramid fiber and strengthen polyformaldehyde material.
Embodiment 3:
According to mass percent, by 60 parts of homopolymerization polyoxymethylene, 0.5 part of KH-550 coupling agent, 0.2 part of Hinered phenols antioxidant, 0.4 part of phosphite ester kind antioxidant, 1 part of stearic acid lubricant evenly mixes jointly in mixing machine, then mixture is poured in forcing machine charging basket.40 parts of continuous continuous aramid fiber 1313, by oven drying processing, oven temperature is 85 ℃, then continuous aramid fiber is passed from extruder die head, opens forcing machine simultaneously.Extruder barrel processing temperature is 170～200 ℃, and forcing machine is established eight sections altogether, and first paragraph and second segment are 175 ℃, and the 3rd section and the 4th section is 185 ℃, and other several sections is 195 ℃, and main-machine screw rotating speed is 210r.min
-1, main feeding rotating speed is 12r.min
-1.Molten resin will be extruded from die head after continuous aramid fiber thorough impregnation in die head, then through overcooling, air-dry, traction, pelletizing, can obtain continuous aramid fiber and strengthen polyformaldehyde material.
Embodiment 4:
According to mass percent, by 60 parts of homopolymerization polyoxymethylene, 0.5 part of KH-550 coupling agent, 0.2 part of Hinered phenols antioxidant, 0.4 part of phosphite ester kind antioxidant, 1 part of stearic acid lubricant evenly mixes jointly in mixing machine, then mixture is poured in forcing machine charging basket.40 parts of continuous continuous aramid fiber 1414, by oven drying processing, oven temperature is 85 ℃, then continuous aramid fiber is passed from extruder die head, opens forcing machine simultaneously.Extruder barrel processing temperature is 170～200 ℃, and forcing machine is established eight sections altogether, and first paragraph and second segment are 175 ℃, and the 3rd section and the 4th section is 185 ℃, and other several sections is 195 ℃, and main-machine screw rotating speed is 210r.min
-1, main feeding rotating speed is 12r.min
-1.Molten resin will be extruded from die head after continuous aramid fiber thorough impregnation in die head, then through overcooling, air-dry, traction, pelletizing, can obtain continuous aramid fiber and strengthen polyformaldehyde material.
Material detects by following standard:
1, notched Izod impact strength test is undertaken by DIN EN ISO 179-1;
2, tensile strength test is undertaken by DIN EN ISO 527-2;
3, bending strength test is undertaken by DIN EN ISO 178;
4, glass fiber content test is undertaken by DIN EN ISO 1172.
The continuous aramid fiber enhancing polyformaldehyde material performance that adopts the inventive method to produce is as shown in the table:
| | Embodiment | 1 | | | Embodiment 4 |
| Notched Izod impact strength (KJ/m 2) | 14.3 | 13.1 | 18.2 | 16.4 | |
| Tensile strength (MPa) | 164.5 | 153.2 | 198.8 | 184.5 | |
| Flexural strength (MPa) | 218.6 | 203.7 | 264 | 249.6 | |
| Modulus in flexure (MPa) | 11062 | 9897 | 11520 | 11370 | |
| Fibre content (%) | 41.2 | 39.6 | 40.8 | 39.8 |
Accompanying drawing explanation: Fig. 1 is concrete production technological process; Fig. 2 is the implication of each mark in accompanying drawing 1.
Claims (6)
1. a continuous aramid fiber strengthens polyformaldehyde material, the quality percentage composition that is primarily characterized in that each component in formula system is: polyoxymethylene 40～60wt%, aramid fiber 40～60wt%, coupling agent 0.2～0.6wt%, oxidation inhibitor 0.3～0.6wt%, lubricant 1.0～2.0wt%.
2. a kind of continuous aramid fiber according to claim 1 strengthens polyformaldehyde material, it is characterized in that: the equipment of preparing this kind of material is the soak type extruder die head of the special construction of our company's autonomous design, this die head is provided with heating unit, can prevent from reducing because die head temperature is low the mobile property of molten resin, effectively improve fiber effect of impregnation, solved fiber and infiltrated incomplete phenomenon, simultaneously fiber orientation is with to extrude material strip direction consistent.
3. a kind of continuous aramid fiber according to claim 1 strengthens polyformaldehyde material, it is characterized in that: described continuous aramid fiber diameter is 10～15 μ m, after granulation, aramid fiber is isometric with material grain, length is 15～25mm, fiber effective L D ratio can reach 1000～2500, and fiber is arranged in parallel along axis direction, and aramid fiber used is the one in para-aramid fiber 1414, meta-aramid fibers 1313.
4. a kind of continuous aramid fiber according to claim 1 strengthens polyformaldehyde material, it is characterized in that: the continuous aramid fiber of producing by this method strengthens polyformaldehyde material compared with conventional chopped glass fiber strongthener, and its material mechanical performance can improve 40%.
5. a kind of continuous aramid fiber according to claim 1 strengthens polyformaldehyde material, it is characterized in that: described polyoxymethylene is one or more the combination in homopolymerization polyoxymethylene, kematal.
6. a kind of continuous aramid fiber according to claim 1 strengthens polyformaldehyde material, it is characterized in that: described coupling agent is single silane coupling agent; Oxidation inhibitor is one or more the combination in Hinered phenols, phosphorous acid esters, thio-based; Lubricant is one or more the combination in stearic acid, ethylene bis stearamide, butyl stearate class.
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| CN201210411967.XA CN103772895A (en) | 2012-10-25 | 2012-10-25 | Continuous aramid fiber-reinforced polyformaldehyde material and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104672765A (en) * | 2015-02-06 | 2015-06-03 | 合肥康龄养生科技有限公司 | Carbon fiber reinforced formaldehyde composite material with good low temperature resistance and preparation method of composite material |
| CN105219016A (en) * | 2015-10-09 | 2016-01-06 | 上海应用技术学院 | A kind of wear-resisting polyformaldehyde matrix material and preparation method thereof |
| CN106751421A (en) * | 2016-12-13 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | Macromolecule self-lubricating material and preparation method thereof, the leaf spring grasswort bushing being made up of the macromolecule self-lubricating material |
| CN109183405A (en) * | 2018-08-24 | 2019-01-11 | 贵州大学 | A kind of processing method on nylon 66 fiber surface |
| CN109878431A (en) * | 2019-01-10 | 2019-06-14 | 吉林大学 | A high-performance environment-friendly basalt fiber/hemp fiber reinforced resin composite automobile ceiling interior panel and preparation method thereof |
| CN110527242A (en) * | 2019-07-25 | 2019-12-03 | 嘉善华正五金机械厂 | A kind of engineering plastics self-lubricating bearing material preparation method |
| RU2835831C1 (en) * | 2019-12-20 | 2025-03-04 | Тейджин Арамид Б.В. | Continuous process for processing |
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| CN1810862A (en) * | 2006-02-23 | 2006-08-02 | 广州金发科技股份有限公司 | Continuous long fiber reinforced fire-retardant thermoplastic resin and its prepn |
| CN101906251A (en) * | 2009-06-04 | 2010-12-08 | 上海杰事杰新材料股份有限公司 | Composite material for wind power generator blade and preparation method thereof |
| WO2012049293A1 (en) * | 2010-10-14 | 2012-04-19 | Ticona Gmbh | Coupled glass-fiber reinforced polyoxymethylene |
| CN102477182A (en) * | 2010-11-25 | 2012-05-30 | 合肥杰事杰新材料股份有限公司 | Long carbon fiber reinforced high-thermal-conductivity polymer composite material and preparation method thereof |
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2012
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1810862A (en) * | 2006-02-23 | 2006-08-02 | 广州金发科技股份有限公司 | Continuous long fiber reinforced fire-retardant thermoplastic resin and its prepn |
| CN101906251A (en) * | 2009-06-04 | 2010-12-08 | 上海杰事杰新材料股份有限公司 | Composite material for wind power generator blade and preparation method thereof |
| WO2012049293A1 (en) * | 2010-10-14 | 2012-04-19 | Ticona Gmbh | Coupled glass-fiber reinforced polyoxymethylene |
| CN102477182A (en) * | 2010-11-25 | 2012-05-30 | 合肥杰事杰新材料股份有限公司 | Long carbon fiber reinforced high-thermal-conductivity polymer composite material and preparation method thereof |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104672765A (en) * | 2015-02-06 | 2015-06-03 | 合肥康龄养生科技有限公司 | Carbon fiber reinforced formaldehyde composite material with good low temperature resistance and preparation method of composite material |
| CN105219016A (en) * | 2015-10-09 | 2016-01-06 | 上海应用技术学院 | A kind of wear-resisting polyformaldehyde matrix material and preparation method thereof |
| CN106751421A (en) * | 2016-12-13 | 2017-05-31 | 株洲时代新材料科技股份有限公司 | Macromolecule self-lubricating material and preparation method thereof, the leaf spring grasswort bushing being made up of the macromolecule self-lubricating material |
| CN109183405A (en) * | 2018-08-24 | 2019-01-11 | 贵州大学 | A kind of processing method on nylon 66 fiber surface |
| CN109183405B (en) * | 2018-08-24 | 2021-02-02 | 贵州大学 | Treatment method for nylon 66 fiber surface |
| CN109878431A (en) * | 2019-01-10 | 2019-06-14 | 吉林大学 | A high-performance environment-friendly basalt fiber/hemp fiber reinforced resin composite automobile ceiling interior panel and preparation method thereof |
| CN109878431B (en) * | 2019-01-10 | 2020-07-07 | 吉林大学 | A high-performance environment-friendly basalt fiber/hemp fiber reinforced resin composite automobile ceiling interior panel and preparation method thereof |
| CN110527242A (en) * | 2019-07-25 | 2019-12-03 | 嘉善华正五金机械厂 | A kind of engineering plastics self-lubricating bearing material preparation method |
| RU2835831C1 (en) * | 2019-12-20 | 2025-03-04 | Тейджин Арамид Б.В. | Continuous process for processing |
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Application publication date: 20140507 |