CN113246494A - Manufacturing method of composite molding plastic cover plate - Google Patents
Manufacturing method of composite molding plastic cover plate Download PDFInfo
- Publication number
- CN113246494A CN113246494A CN202110434912.XA CN202110434912A CN113246494A CN 113246494 A CN113246494 A CN 113246494A CN 202110434912 A CN202110434912 A CN 202110434912A CN 113246494 A CN113246494 A CN 113246494A
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- Prior art keywords
- cover plate
- manufacturing
- composite
- mixed material
- plastic cover
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- 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.)
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Classifications
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- 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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
- B29C70/545—Perforating, cutting or machining during or after moulding
-
- 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
Abstract
The invention discloses a method for manufacturing a composite molding plastic cover plate, which is prepared from the following raw materials: 30-40% of polyurethane resin, 10-15% of isooctyl ester, 10-20% of dicyclopentadiene, 5-8% of heat stabilizer, 5-10% of colorant, 10-20% of glass fiber, 4-8% of filler and 3-7% of lubricant; the manufacturing method comprises the following steps: p1, weighing the components according to the mass percentage for later use; p2, obtaining a mixed material; p3, stirring and mixing to form a mixed material; p4, laying glass fiber into the composite mould to form a bottom layer, and then injecting the mixed material onto the bottom layer to form a double-layer material; p5, combining a die to carry out compression molding to form a single-layer blank; p6, sequentially operating four to five times to form a composite blank; p7, can accomplish the manufacturing of plastic cover plate after detecting qualified to the size, effectively improve the structural stability of plastic cover plate, avoid heat altered shape and fracture, do benefit to the production and processing, convenient using widely.
Description
Technical Field
The invention relates to the technical field of plastic cover plates, in particular to a manufacturing method of a composite molding plastic cover plate.
Background
In modern social life, plastic cover plates are used in various industries, especially municipal manhole covers, and are most commonly used.
However, most of the existing plastic cover plates are formed by injection molding, and the components and the proportion of the raw materials used by the existing cover plates are unreasonable, so that the tightness of the combination of various raw materials is affected, the structural strength of the cover plates is poor, the thermal stability is insufficient, and the use safety is affected, so that a manufacturing method adopting a compound die needs to be overflowed.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a manufacturing method of a composite molding compound cover plate.
In order to achieve the purpose, the invention adopts the following technical scheme:
a manufacturing method of a composite molding plastic cover plate is provided, the plastic cover plate is made of the following raw materials: 30-40% of polyurethane resin, 10-15% of isooctyl ester, 10-20% of dicyclopentadiene, 5-8% of heat stabilizer, 5-10% of colorant, 10-20% of glass fiber, 4-8% of filler and 3-7% of lubricant;
the manufacturing method comprises the following steps:
p1, weighing the components according to the mass percentage for later use;
p2, adding the polyurethane resin, isooctyl ester, dicyclopentadiene and the heat stabilizer into a high-speed mixer, and stirring and mixing at the speed of 350 revolutions per minute of 320 revolutions per minute to obtain a mixed material;
p3, putting the mixed material into a mixing roll, heating to 360-380 ℃ for mixing, then putting the colorant, the filler and the lubricant, and stirring and mixing to form a mixed material;
p4, laying glass fiber into the composite mould to form a bottom layer, and then injecting the mixed material onto the bottom layer to form a double-layer material;
p5, combining a die to carry out compression molding to form a single-layer blank;
p6, paving glass fiber on the single-layer blank again, then injecting the mixed material for pressing, and sequentially operating for four to five times to form a composite blank;
and P7, taking out the composite blank, trimming the flash and burr, and detecting the size to be qualified to finish the manufacture of the plastic cover plate.
Preferably, the step P2 further includes friction heating by stirring and mixing, wherein the temperature range is 70 to 80 ℃.
Preferably, the heat preservation is performed after the mixing in the step P3 is completed, the temperature is maintained at 280 to 350 ℃, and the mixture is hermetically stored.
Preferably, the pressing pressure of the P5 step and the P6 step is 25MPa-32MPa, the pressing temperature is 200 ℃ to 220 ℃, the pressing time is 5 minutes to 8 minutes, and the single-layer pressing thickness is 1.2 centimeters to 1.5 centimeters.
Preferably, the heat stabilizer is inorganic and comprises one or more of zinc oxide, zinc sulfate, barium sulfate and calcium sulfate.
Preferably, the colorant comprises one of a pigment liquid, an inorganic mineral pigment and a color masterbatch.
Preferably, the filler includes one of calcium carbonate, silica and silicate.
Preferably, the lubricant is one of glyceryl stearate, calcium stearate and phthalate.
According to the manufacturing method of the composite molding plastic cover plate, the reasonable raw materials are combined with different proportions, the raw materials are mixed and then heated and mixed, the tightness of the combination of the raw materials is effectively improved, the strength of the cover plate is ensured, the composite mold is used for performing high-pressure compression molding to obtain a multilayer structure, the structural stability of the plastic cover plate is effectively improved, thermal deformation and fracture are avoided, the production and the processing are facilitated, and the popularization and the use are convenient.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
A manufacturing method of a composite molding plastic cover plate is provided, the plastic cover plate is made of the following raw materials: 30-40% of polyurethane resin, 10-15% of isooctyl ester, 10-20% of dicyclopentadiene, 5-8% of heat stabilizer, 5-10% of colorant, 10-20% of glass fiber, 4-8% of filler and 3-7% of lubricant;
the manufacturing method comprises the following steps:
p1, weighing the components according to the mass percentage for later use;
p2, adding the polyurethane resin, isooctyl ester, dicyclopentadiene and the heat stabilizer into a high-speed mixer, and stirring and mixing at the speed of 350 revolutions per minute of 320 revolutions per minute to obtain a mixed material;
p3, putting the mixed material into a mixing roll, heating to 360-380 ℃ for mixing, then putting the colorant, the filler and the lubricant, and stirring and mixing to form a mixed material;
p4, laying glass fiber into the composite mould to form a bottom layer, and then injecting the mixed material onto the bottom layer to form a double-layer material;
p5, combining a die to carry out compression molding to form a single-layer blank;
p6, paving glass fiber on the single-layer blank again, then injecting the mixed material for pressing, and sequentially operating for four to five times to form a composite blank;
and P7, taking out the composite blank, trimming the flash and burr, and detecting the size to be qualified to finish the manufacture of the plastic cover plate.
Preferably, the step P2 further comprises friction heating by stirring and mixing, wherein the temperature is in the range of 70 to 80 ℃.
Preferably, the heat is maintained at 280 to 350 ℃ after the completion of the kneading in the step P3, and the mixture is hermetically stored.
Preferably, the pressing pressure of the P5 step and the P6 step is 25MPa-32MPa, the pressing temperature is 200 ℃ to 220 ℃, the pressing time is 5 minutes to 8 minutes, and the single-layer pressing thickness is 1.2 centimeters to 1.5 centimeters.
Preferably, the heat stabilizer is inorganic and comprises one or more of zinc oxide, zinc sulfate, barium sulfate and calcium sulfate.
Preferably, the colorant comprises one of a pigment liquid, an inorganic mineral pigment and a color masterbatch.
Preferably, the filler includes one of calcium carbonate, silica and silicate.
Preferably, the lubricant is one of glyceryl stearate, calcium stearate and phthalate.
According to the manufacturing method of the composite molding plastic cover plate, the reasonable raw materials are combined with different proportions, the raw materials are mixed and then heated and mixed, the tightness of the combination of the raw materials is effectively improved, the strength of the cover plate is ensured, the composite mold is used for performing high-pressure compression molding to obtain a multilayer structure, the structural stability of the plastic cover plate is effectively improved, thermal deformation and fracture are avoided, the production and the processing are facilitated, and the popularization and the use are convenient.
Example 1
A manufacturing method of a composite molding plastic cover plate is provided, the plastic cover plate is made of the following raw materials: 30% of polyurethane resin, 12% of isooctyl ester, 12% of dicyclopentadiene, 8% of heat stabilizer, 8% of colorant, 16% of glass fiber, 8% of filler and 6% of lubricant;
the manufacturing method comprises the following steps:
p1, weighing the components according to the mass percentage for later use;
p2, adding the polyurethane resin, isooctyl ester, dicyclopentadiene and the heat stabilizer into a high-speed mixer, and stirring and mixing at the speed of 350 revolutions per minute of 320 revolutions per minute to obtain a mixed material;
p3, putting the mixed material into a mixing roll, heating to 360-380 ℃ for mixing, then putting the colorant, the filler and the lubricant, and stirring and mixing to form a mixed material;
p4, laying glass fiber into the composite mould to form a bottom layer, and then injecting the mixed material onto the bottom layer to form a double-layer material;
p5, combining a die to carry out compression molding to form a single-layer blank;
p6, paving glass fiber on the single-layer blank again, then injecting the mixed material for pressing, and sequentially operating for four to five times to form a composite blank;
and P7, taking out the composite blank, trimming the flash and burr, and detecting the size to be qualified to finish the manufacture of the plastic cover plate.
Preferably, the step P2 further comprises friction heating by stirring and mixing, wherein the temperature is in the range of 70 to 80 ℃.
Preferably, the heat is maintained at 280 to 350 ℃ after the completion of the kneading in the step P3, and the mixture is hermetically stored.
Preferably, the pressing pressure of the P5 step and the P6 step is 25MPa-32MPa, the pressing temperature is 200 ℃ to 220 ℃, the pressing time is 5 minutes to 8 minutes, and the single-layer pressing thickness is 1.2 centimeters to 1.5 centimeters.
Preferably, the heat stabilizer is inorganic and comprises a mixture of zinc oxide, zinc sulfate, barium sulfate and calcium sulfate.
Preferably, the colorant comprises a masterbatch.
Preferably, the filler comprises silica.
Preferably, the lubricant is calcium stearate.
Example 2
A manufacturing method of a composite molding plastic cover plate is provided, the plastic cover plate is made of the following raw materials: 38% of polyurethane resin, 15% of isooctyl ester, 10% of dicyclopentadiene, 6% of heat stabilizer, 6% of colorant, 10% of glass fiber, 8% of filler and 7% of lubricant;
the manufacturing method comprises the following steps:
p1, weighing the components according to the mass percentage for later use;
p2, adding the polyurethane resin, isooctyl ester, dicyclopentadiene and the heat stabilizer into a high-speed mixer, and stirring and mixing at the speed of 350 revolutions per minute of 320 revolutions per minute to obtain a mixed material;
p3, putting the mixed material into a mixing roll, heating to 360-380 ℃ for mixing, then putting the colorant, the filler and the lubricant, and stirring and mixing to form a mixed material;
p4, laying glass fiber into the composite mould to form a bottom layer, and then injecting the mixed material onto the bottom layer to form a double-layer material;
p5, combining a die to carry out compression molding to form a single-layer blank;
p6, paving glass fiber on the single-layer blank again, then injecting the mixed material for pressing, and sequentially operating for four to five times to form a composite blank;
and P7, taking out the composite blank, trimming the flash and burr, and detecting the size to be qualified to finish the manufacture of the plastic cover plate.
Preferably, the step P2 further comprises friction heating by stirring and mixing, wherein the temperature is in the range of 70 to 80 ℃.
Preferably, the heat is maintained at 280 to 350 ℃ after the completion of the kneading in the step P3, and the mixture is hermetically stored.
Preferably, the pressing pressure of the P5 step and the P6 step is 25MPa-32MPa, the pressing temperature is 200 ℃ to 220 ℃, the pressing time is 5 minutes to 8 minutes, and the single-layer pressing thickness is 1.2 centimeters to 1.5 centimeters.
Preferably, the heat stabilizer is inorganic and comprises a mixture of barium sulfate and calcium sulfate.
Preferably, the colorant comprises an inorganic mineral pigment.
Preferably, the filler comprises a silicate.
Preferably, the lubricant is a phthalate.
Example 3
A manufacturing method of a composite molding plastic cover plate is provided, the plastic cover plate is made of the following raw materials: 40% of polyurethane resin, 15% of isooctyl ester, 10% of dicyclopentadiene, 5% of heat stabilizer, 5% of colorant, 15% of glass fiber, 5% of filler and 5% of lubricant;
the manufacturing method comprises the following steps:
p1, weighing the components according to the mass percentage for later use;
p2, adding the polyurethane resin, isooctyl ester, dicyclopentadiene and the heat stabilizer into a high-speed mixer, and stirring and mixing at the speed of 350 revolutions per minute of 320 revolutions per minute to obtain a mixed material;
p3, putting the mixed material into a mixing roll, heating to 360-380 ℃ for mixing, then putting the colorant, the filler and the lubricant, and stirring and mixing to form a mixed material;
p4, laying glass fiber into the composite mould to form a bottom layer, and then injecting the mixed material onto the bottom layer to form a double-layer material;
p5, combining a die to carry out compression molding to form a single-layer blank;
p6, paving glass fiber on the single-layer blank again, then injecting the mixed material for pressing, and sequentially operating for four to five times to form a composite blank;
and P7, taking out the composite blank, trimming the flash and burr, and detecting the size to be qualified to finish the manufacture of the plastic cover plate.
Preferably, the step P2 further comprises friction heating by stirring and mixing, wherein the temperature is in the range of 70 to 80 ℃.
Preferably, the heat is maintained at 280 to 350 ℃ after the completion of the kneading in the step P3, and the mixture is hermetically stored.
Preferably, the pressing pressure of the P5 step and the P6 step is 25MPa-32MPa, the pressing temperature is 200 ℃ to 220 ℃, the pressing time is 5 minutes to 8 minutes, and the single-layer pressing thickness is 1.2 centimeters to 1.5 centimeters.
Preferably, the heat stabilizer is inorganic and comprises a mixture of zinc oxide and zinc sulfate.
Preferably, the colorant comprises a pigment liquid.
Preferably, the filler comprises calcium carbonate.
Preferably, the lubricant is glyceryl stearate.
Claims (8)
1. The manufacturing method of the composite molding plastic cover plate is characterized by comprising the following steps: the plastic cover plate is prepared from the following raw materials: 30-40% of polyurethane resin, 10-15% of isooctyl ester, 10-20% of dicyclopentadiene, 5-8% of heat stabilizer, 5-10% of colorant, 10-20% of glass fiber, 4-8% of filler and 3-7% of lubricant;
the manufacturing method comprises the following steps:
p1, weighing the components according to the mass percentage for later use;
p2, adding the polyurethane resin, isooctyl ester, dicyclopentadiene and the heat stabilizer into a high-speed mixer, and stirring and mixing at the speed of 350 revolutions per minute of 320 revolutions per minute to obtain a mixed material;
p3, putting the mixed material into a mixing roll, heating to 360-380 ℃ for mixing, then putting the colorant, the filler and the lubricant, and stirring and mixing to form a mixed material;
p4, laying glass fiber into the composite mould to form a bottom layer, and then injecting the mixed material onto the bottom layer to form a double-layer material;
p5, combining a die to carry out compression molding to form a single-layer blank;
p6, paving glass fiber on the single-layer blank again, then injecting the mixed material for pressing, and sequentially operating for four to five times to form a composite blank;
and P7, taking out the composite blank, trimming the flash and burr, and detecting the size to be qualified to finish the manufacture of the plastic cover plate.
2. The method of manufacturing a composite molding compound cover plate according to claim 1, characterized in that: and the step P2 also comprises the step of stirring, mixing and friction heating, wherein the temperature range is 70-80 ℃.
3. The method of manufacturing a composite molding compound cover plate according to claim 1, characterized in that: and (3) after the step P3 is completed, preserving heat, keeping the temperature at 280-350 ℃, and preserving in a sealed manner.
4. The method of manufacturing a composite molding compound cover plate according to claim 1, characterized in that: the pressing pressure of the P5 step and the P6 step is 25MPa-32MPa, the pressing temperature is 200 ℃ to 220 ℃, the pressing time is 5 minutes to 8 minutes, and the single-layer pressing thickness is 1.2 centimeters to 1.5 centimeters.
5. The method of manufacturing a composite molding compound cover plate according to claim 1, characterized in that: the heat stabilizer is an inorganic substance and comprises one or a mixture of zinc oxide, zinc sulfate, barium sulfate and calcium sulfate.
6. The method of manufacturing a composite molding compound cover plate according to claim 1, characterized in that: the colorant comprises one of a pigment liquid, an inorganic mineral pigment and a color masterbatch.
7. The method of manufacturing a composite molding compound cover plate according to claim 1, characterized in that: the filler includes one of calcium carbonate, silica, and silicate.
8. The method of manufacturing a composite molding compound cover plate according to claim 1, characterized in that: the lubricant is one of glyceryl stearate, calcium stearate and phthalate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110434912.XA CN113246494A (en) | 2021-04-22 | 2021-04-22 | Manufacturing method of composite molding plastic cover plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110434912.XA CN113246494A (en) | 2021-04-22 | 2021-04-22 | Manufacturing method of composite molding plastic cover plate |
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| CN113246494A true CN113246494A (en) | 2021-08-13 |
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| CN202110434912.XA Pending CN113246494A (en) | 2021-04-22 | 2021-04-22 | Manufacturing method of composite molding plastic cover plate |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002265905A (en) * | 2001-03-14 | 2002-09-18 | Sekisui Chem Co Ltd | Bonding method of dicyclopentadiene based resin molding |
| CN1640640A (en) * | 2004-01-15 | 2005-07-20 | 中国科学院过程工程研究所 | Composite waterproof plate, ad its manufacturing method and use |
| CN103665700A (en) * | 2013-08-27 | 2014-03-26 | 河南科技大学 | Polydicyclopentadiene composite material and preparation method thereof |
| CN104781327A (en) * | 2012-11-14 | 2015-07-15 | 帝斯曼知识产权资产管理有限公司 | Thermosetting resin composition |
| TW201843053A (en) * | 2017-03-17 | 2018-12-16 | 荷蘭商薩比克環球科技公司 | Tools having one or more plates for use in forming laminates using presses and related methods |
| CN110612198A (en) * | 2017-03-17 | 2019-12-24 | 沙特基础工业全球技术公司 | Press platens with fluid-driven variable pressure face geometry and related methods |
-
2021
- 2021-04-22 CN CN202110434912.XA patent/CN113246494A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002265905A (en) * | 2001-03-14 | 2002-09-18 | Sekisui Chem Co Ltd | Bonding method of dicyclopentadiene based resin molding |
| CN1640640A (en) * | 2004-01-15 | 2005-07-20 | 中国科学院过程工程研究所 | Composite waterproof plate, ad its manufacturing method and use |
| CN104781327A (en) * | 2012-11-14 | 2015-07-15 | 帝斯曼知识产权资产管理有限公司 | Thermosetting resin composition |
| CN103665700A (en) * | 2013-08-27 | 2014-03-26 | 河南科技大学 | Polydicyclopentadiene composite material and preparation method thereof |
| TW201843053A (en) * | 2017-03-17 | 2018-12-16 | 荷蘭商薩比克環球科技公司 | Tools having one or more plates for use in forming laminates using presses and related methods |
| CN110612198A (en) * | 2017-03-17 | 2019-12-24 | 沙特基础工业全球技术公司 | Press platens with fluid-driven variable pressure face geometry and related methods |
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Application publication date: 20210813 |