CN111976055B - Preparation method of low-odor glass fiber modified nylon 6 - Google Patents
Preparation method of low-odor glass fiber modified nylon 6 Download PDFInfo
- Publication number
- CN111976055B CN111976055B CN202010815204.6A CN202010815204A CN111976055B CN 111976055 B CN111976055 B CN 111976055B CN 202010815204 A CN202010815204 A CN 202010815204A CN 111976055 B CN111976055 B CN 111976055B
- Authority
- CN
- China
- Prior art keywords
- water
- glass fiber
- guide roller
- water tank
- extruder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/02—Making granules by dividing preformed material
- B29B9/06—Making granules by dividing preformed material in the form of filamentary material, e.g. combined with extrusion
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B9/00—Making granules
- B29B9/12—Making granules characterised by structure or composition
- B29B9/14—Making granules characterised by structure or composition fibre-reinforced
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
- C08K5/098—Metal salts of carboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/16—Nitrogen-containing compounds
- C08K5/20—Carboxylic acid amides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K7/00—Use of ingredients characterised by shape
- C08K7/02—Fibres or whiskers
- C08K7/04—Fibres or whiskers inorganic
- C08K7/14—Glass
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/10—Transparent films; Clear coatings; Transparent materials
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Abstract
The invention discloses a preparation method of low-odor glass fiber modified nylon 6, which comprises the following steps: (1) putting the PA6, the antioxidant and the lubricant into a high-speed mixer according to the raw material proportion, and fully and uniformly mixing; (2) placing the material obtained in the step (1) in a corresponding charging bucket of an extruder, feeding glass fiber from a glass fiber feeding hole of the extruder, extruding the material through the extruder to obtain a material strip, and controlling the vacuum degree to be less than or equal to-0.08 MPa in the extrusion process; (3) and (3) cooling the material strips obtained in the step (2) by a water tank assembly, blowing water by a blow dryer, granulating by a granulator and sieving by a vibrating screen to obtain the material strips. The product prepared by the invention has high transparency, obviously reduced peculiar smell and low cost. The invention has simple process and does not need special equipment.
Description
Technical Field
The invention belongs to the technical field of nylon material preparation, and particularly relates to a preparation method of low-odor glass fiber modified nylon 6.
Background
With the progress of miniaturization of automobiles, high performance of electronic and electrical equipment, and lightweight of mechanical equipment becoming faster, demand for nylon is gradually increasing, and the demand for nylon performance is also increasing. The glass fiber modified nylon as one of nylon materials has good performances such as high strength, good heat resistance and fatigue resistance, low forming shrinkage and the like, so that the glass fiber modified nylon is widely applied to exterior trimming parts including housings of electric tools, housings of motors and the like and some interior trimming parts, and is developed into one of the most important engineering plastics in the world nowadays.
The preparation process of the glass fiber modified nylon must add antioxidant, lubricant and other industrial auxiliary agents with peculiar smell, and some monomers which are not completely reacted always exist in the polymerization process of the nylon, so that the nylon inevitably emits large smell in the processing process, thereby influencing the sense of customers and bringing discomfort to users. With the continuous expansion of the application field of the glass fiber modified nylon, the glass fiber modified nylon with low odor and high strength needs to be prepared to meet the requirements of certain special applications sensitive to peculiar smell.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a preparation method of low-odor glass fiber modified nylon 6.
The technical scheme of the invention is as follows:
a preparation method of low-odor glass fiber modified nylon 6 comprises the following steps:
(1) putting the PA6, the antioxidant and the lubricant into a high-speed mixer according to the raw material proportion, fully mixing uniformly, and weighing the glass fiber according to the raw material proportion;
(2) placing the material obtained in the step (1) in a corresponding charging bucket of an extruder, feeding glass fiber from a glass fiber feeding hole of the extruder, extruding the material through the extruder to obtain a material strip, and controlling the vacuum degree to be less than or equal to-0.08 MPa in the extrusion process;
(3) cooling the material strips obtained in the step (2) by a water tank assembly, blowing water by a blow dryer, granulating by a granulator and sieving by a vibrating screen to obtain the material strips;
the water tank assembly comprises a water tank body, a first guide roller and a second guide roller, wherein the first guide roller and the second guide roller are sequentially arranged from upstream to downstream of the water tank body and are positioned below the water surface, and the material strips are driven by the first guide roller to be immersed in water and then discharged after the second guide roller;
the water inlet of the water tank body is arranged at the upstream of the water inlet of the material strip, and the opening degree of 1/3 is kept for supplying water, so that 1/3 inflow water is sent into the water tank body in an upwelling state, the rest inflow water flows in the water tank body in a horizontal flowing state, the water in the water tank is ensured to have a multi-directional flowing state, and the rest water is discharged from an overflow port on the side wall of the water tank body; and simultaneously, blowing the discharged material strips at the water outlet positions of the material strips positioned at the downstream of the second guide roller to ensure that gas is contacted with the water surface so as to avoid the accumulation of floaters separated out from the material strips at the water outlet positions of the material strips.
In a preferred embodiment of the invention, the speed of the high-speed mixer is 350 rpm.
In a preferred embodiment of the invention, the mixing time of the high-speed mixer is 2 to 3 min.
In a preferred embodiment of the present invention, the rotation speed of the screw of the extruder is 500-600 rpm.
In a preferred embodiment of the invention, the processing temperature of the extruder sections is 230 ℃, 240 ℃, 230 ℃, 225 ℃, 230 ℃, 235 ℃ and 235 ℃ in this order.
In a preferred embodiment of the present invention, the control of the degree of vacuum in the step (2) is performed using a separate vacuum pump.
Further preferably, the power of the independent vacuum pump is at least 5 kW.
In a preferred embodiment of the present invention, the water in the tank body is tap water.
In a preferred embodiment of the invention, the distance between the entry point and the exit point of the strand is between 0.6 and 1 m.
In a preferred embodiment of the invention, the strand between the first guide roller and the second guide roller is located 5-8cm under water.
The invention has the beneficial effects that:
1. the product prepared by the invention has high transparency, obviously reduced peculiar smell and low cost.
2. The invention has simple process and does not need special equipment.
Drawings
Fig. 1 is a schematic structural view of a sump assembly according to the present invention.
Detailed Description
The technical solution of the present invention will be further illustrated and described below with reference to the accompanying drawings by means of specific embodiments.
Example 1
A preparation method of low-odor glass fiber modified nylon 6 comprises the following steps:
(1) the PA6, the antioxidant and the lubricant are put into a high-speed mixer according to the raw material proportion and fully mixed uniformly for 2-3min at the rotating speed of 350rpm, and simultaneously the glass fiber is weighed according to the raw material proportion, wherein in the embodiment: PA6 with a designation SC28 in a proportion of 68.1 wt%; the glass fiber is ECS10-03-568H, and the proportion is 31.5 wt%; the antioxidant is 1098, and the proportion is 0.2 wt%; the lubricant is calcium stearate with the proportion of 0.2 wt%;
(2) placing the material obtained in the step (1) in a corresponding charging bucket of an extruder, feeding glass fiber from a glass fiber feeding hole of the extruder, extruding the material through the extruder to obtain a material strip, controlling the vacuum degree to be less than or equal to-0.08 MPa (adopting an independent vacuum pump for carrying out, the power is at least 5kW, and ensuring that a vacuum system is airtight in the process), wherein the rotating speed of a screw of the extruder is 500 plus 600rpm, and the processing temperature of each section of the extruder is 230 ℃, 240 ℃, 230 ℃, 225 ℃, 230 ℃, 235 ℃ and 235 ℃ in sequence; the method comprises the following steps of selecting a conveying element with a large lead and a small abrasion degree in a vacuum section of an extruder, confirming that materials can be conveyed normally and stably in the section, avoiding the condition of vacuum material overflow, and simultaneously ensuring that a vacuum system can effectively remove small molecular substances and gas;
(3) cooling the material strips obtained in the step (2) by a water tank assembly, blowing water by a blow dryer, granulating by a granulator and sieving by a vibrating screen to obtain the material strips;
as shown in fig. 1, the sink assembly 1 includes a sink body 10 for containing tap water, a first guide roller 11 and a second guide roller 12, the first guide roller 11 and the second guide roller 12 are arranged in sequence from upstream to downstream of the sink body 10 and are located under the water surface, the strip 2 is driven by the first guide roller 11 to be immersed in the water, and water is discharged after the second guide roller 12;
the water inlet 101 of the water tank body 10 is arranged at the upstream of the water inlet of the material strip 2, and the opening degree of 1/3 is kept for supplying water, so that 1/3 of inlet water is sent into the water tank body 10 in an upwelling state, the rest of inlet water flows in the water tank body 10 in a horizontal flowing state, the water (the dotted line in fig. 1 is the water surface) in the water tank body 2 is ensured to have a multi-directional flowing state, and the excess water is discharged from an overflow port (not shown) on the side wall of the water tank body 10; and simultaneously, blowing the discharged material strips 2 at the water outlet positions of the material strips 2 positioned at the downstream of the second guide roller 12 to ensure that gas is contacted with the water surface so as to avoid the accumulation of floating materials separated out from the material strips 2 at the water outlet positions of the material strips 2.
Preferably, the distance between the water inlet position and the water outlet position of the material strip 2 is 0.6-1m, and the material strip 2 between the first guide roller 11 and the second guide roller 12 is 5-8cm below the water surface.
The process of this example was run in a comparative test, and the specific results are shown in the following table under the same recipe and other same process parameters:
the odor rating was according to VDA270 (german automotive industry association) odor test standard; the coverage rate is measured by using the coverage rate of a spectral tester, and the higher the coverage rate is, the lower the transmittance is, and conversely, the lower the coverage rate is, the higher the transmittance is.
The above description is only a preferred embodiment of the present invention, and therefore should not be taken as limiting the scope of the invention, which is defined by the appended claims.
Claims (1)
1. A preparation method of low-odor glass fiber modified nylon 6 is characterized by comprising the following steps: the method comprises the following steps:
(1) putting PA6 SC28, an antioxidant 1098 and a lubricant calcium stearate into a high-speed mixer with the rotating speed of 350rpm according to the raw material proportion, fully mixing for 2-3min, and weighing glass fiber ECS10-03-568H according to the raw material proportion, wherein the proportion of PA6 SC28 is 68.1wt%, the proportion of glass fiber ECS10-03-568H is 31.5wt%, and the proportion of the antioxidant 1098 is 0.2 wt%; the proportion of lubricant calcium stearate is 0.2 wt%;
(2) placing the material obtained in the step (1) in a corresponding charging bucket of an extruder, feeding glass fiber ECS10-03-568H from a glass fiber feeding hole of the extruder, extruding by the extruder to obtain a material strip, controlling the vacuum degree to be less than or equal to-0.08 MPa in the extrusion process, and controlling the vacuum degree by adopting an independent vacuum pump, wherein the power of the independent vacuum pump is at least 5 kW; the rotation speed of the screw of the extruder is 500-600rpm, and the processing temperature of each section of the extruder is 230 ℃, 240 ℃, 230 ℃, 225 ℃, 230 ℃, 235 ℃ and 235 ℃ in sequence;
(3) cooling the material strips obtained in the step (2) by a water tank assembly, blowing water by a blow dryer, granulating by a granulator and sieving by a vibrating screen to obtain the material strips;
the water tank assembly comprises a water tank body, a first guide roller and a second guide roller, wherein the first guide roller and the second guide roller are sequentially arranged from upstream to downstream of the water tank body and are positioned below the water surface, and the material strips are driven by the first guide roller to be immersed in water and then discharged after the second guide roller;
the water inlet of the water tank body is arranged at the upstream of the water inlet of the material strip, and the opening degree of 1/3 is kept for supplying water, so that 1/3 inflow water is sent into the water tank body in an upwelling state, the rest inflow water flows in the water tank body in a horizontal flowing state, the water in the water tank is ensured to have a multi-directional flowing state, and the rest water is discharged from an overflow port on the side wall of the water tank body; simultaneously blowing the discharged material strips at the water outlet positions of the material strips positioned at the downstream of the second guide roller to ensure that gas is in contact with the water surface so as to avoid the accumulation of floating materials separated out from the material strips at the water outlet positions of the material strips; the distance between the water inlet position and the water outlet position of the material strip is 0.6-1m, and the material strip between the first guide roller and the second guide roller is 5-8cm under water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010815204.6A CN111976055B (en) | 2020-08-13 | 2020-08-13 | Preparation method of low-odor glass fiber modified nylon 6 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010815204.6A CN111976055B (en) | 2020-08-13 | 2020-08-13 | Preparation method of low-odor glass fiber modified nylon 6 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111976055A CN111976055A (en) | 2020-11-24 |
| CN111976055B true CN111976055B (en) | 2022-05-17 |
Family
ID=73434392
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010815204.6A Active CN111976055B (en) | 2020-08-13 | 2020-08-13 | Preparation method of low-odor glass fiber modified nylon 6 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111976055B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385152A (en) * | 2015-12-22 | 2016-03-09 | 上海金发科技发展有限公司 | Low-emission high-heat-resistant polyamide composite material and preparation method thereof |
| CN210647521U (en) * | 2019-09-17 | 2020-06-02 | 巩义市宇通新材料科技有限公司 | Workbench of ultrasonic cleaning machine |
| CN210911106U (en) * | 2019-08-22 | 2020-07-03 | 珠海格力新材料有限公司 | Water tank capable of automatically controlling temperature |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8663524B2 (en) * | 2009-05-12 | 2014-03-04 | Miller Waste Mills | Controlled geometry composite micro pellets for use in compression molding |
-
2020
- 2020-08-13 CN CN202010815204.6A patent/CN111976055B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105385152A (en) * | 2015-12-22 | 2016-03-09 | 上海金发科技发展有限公司 | Low-emission high-heat-resistant polyamide composite material and preparation method thereof |
| CN210911106U (en) * | 2019-08-22 | 2020-07-03 | 珠海格力新材料有限公司 | Water tank capable of automatically controlling temperature |
| CN210647521U (en) * | 2019-09-17 | 2020-06-02 | 巩义市宇通新材料科技有限公司 | Workbench of ultrasonic cleaning machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111976055A (en) | 2020-11-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106750953A (en) | It is a kind of comprising anti-precipitation, the composite of permanent type antistatic polypropylene functional agglomerate and preparation method thereof | |
| CN111976055B (en) | Preparation method of low-odor glass fiber modified nylon 6 | |
| US20190177448A1 (en) | Molecular modification of polyethylene resin | |
| CN107573683A (en) | A kind of low-k fiber glass reinforced polyamide material and preparation method thereof | |
| CN103756014A (en) | Application of zinc oxide as anti-floating fiber agent of glass fiber enhanced thermoplastic plastic and anti-floating fiber master batch with zinc oxide | |
| CN109337198B (en) | High-rigidity glass fiber reinforced polypropylene material and preparation equipment and preparation method thereof | |
| JP2019069585A (en) | Automatic startup control method of twin screw extruder | |
| CN110819038A (en) | PVC sheet and preparation method thereof | |
| CN114149680B (en) | Special white master batch for polyurethane waterproof moisture-permeable film and preparation method thereof | |
| CN112812414B (en) | Fluorosilicone polymer processing aid master batch and preparation method thereof | |
| CN104045964B (en) | A kind of chemical method for toughening of waste and old ABS plastic | |
| CN108164911A (en) | A kind of heat-resisting dumb light ABS resin composition and preparation method thereof | |
| CN109705517B (en) | Preparation method of micro-foaming ABS material and high-surface-quality light injection molding material | |
| Kimura et al. | Twin‐Screw Extrusion of Polyethylene | |
| CN106003461B (en) | Waste plastics recycling utilizes band gas shield and modified granulating integrated device | |
| US10843384B2 (en) | Process for the production of thermoplastic moulding compounds | |
| Crowther | Rubber Extrusion: Theory and Development | |
| CN116554739B (en) | Polypropylene coating material and preparation method thereof | |
| Sengupta et al. | General Awareness of XLPE Manufacturers | |
| CN115058071B (en) | Crosslinked polyethylene cable material for solving problem of unstable printing | |
| CN115895139B (en) | High-toughness high-fluidity PVC composite material and preparation method and application thereof | |
| CN106496769B (en) | A kind of isomerism cross-linking method containing L-POSS crosslinking agent is modified to recycle PP and preparation method thereof | |
| Extruders et al. | Devolatilization in Co-Rotating | |
| CN117362971A (en) | Antistatic composite material and preparation method and application thereof | |
| CN111675877A (en) | Anti-aging modified ABS plastic and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |