CN115594818A - Square frame type fragile cover and preparation method thereof - Google Patents
Square frame type fragile cover and preparation method thereof Download PDFInfo
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- CN115594818A CN115594818A CN202211340109.0A CN202211340109A CN115594818A CN 115594818 A CN115594818 A CN 115594818A CN 202211340109 A CN202211340109 A CN 202211340109A CN 115594818 A CN115594818 A CN 115594818A
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- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000000034 method Methods 0.000 claims abstract description 18
- 229920005862 polyol Polymers 0.000 claims abstract description 18
- 150000003077 polyols Chemical class 0.000 claims abstract description 18
- 239000004721 Polyphenylene oxide Substances 0.000 claims abstract description 17
- 239000004744 fabric Substances 0.000 claims abstract description 17
- 229920000570 polyether Polymers 0.000 claims abstract description 17
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 13
- 239000012948 isocyanate Substances 0.000 claims abstract description 10
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 10
- GEYOCULIXLDCMW-UHFFFAOYSA-N 1,2-phenylenediamine Chemical compound NC1=CC=CC=C1N GEYOCULIXLDCMW-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000004088 foaming agent Substances 0.000 claims abstract description 8
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 230000032683 aging Effects 0.000 claims abstract description 7
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 230000007062 hydrolysis Effects 0.000 claims abstract description 7
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 24
- 238000002156 mixing Methods 0.000 claims description 20
- 229920002545 silicone oil Polymers 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 238000005187 foaming Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 239000000498 cooling water Substances 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005086 pumping Methods 0.000 claims description 5
- 239000004814 polyurethane Substances 0.000 abstract description 6
- 229920002635 polyurethane Polymers 0.000 abstract description 5
- 229920000642 polymer Polymers 0.000 abstract description 4
- 238000000465 moulding Methods 0.000 abstract description 3
- 230000007306 turnover Effects 0.000 abstract description 2
- 238000012856 packing Methods 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 abstract 1
- 230000008569 process Effects 0.000 description 9
- 229920005830 Polyurethane Foam Polymers 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000011496 polyurethane foam Substances 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/482—Mixtures of polyethers containing at least one polyether containing nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2110/00—Foam properties
- C08G2110/0025—Foam properties rigid
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of high polymer hard polyurethane molding, and particularly relates to a square frame type fragile cover and a preparation method thereof; the frangible lid consists of the following components: 85-90 parts of polyol, 15 parts of polyether polyol, 10-15 parts of phenylenediamine polyether, 5-8 parts of foaming agent, 0.2-0.6 part of aging agent, 0.6-0.8 part of catalyst and 1-1.7 parts of hydrolysis resistance; 130-160 parts of isocyanate. Through the special layer forming method that adopts mould temperature regulator to carry out suitable heating and refrigerated mode and oval type packing ring support net cloth to large-scale complicated component, convenient operation to accurate, the even accuse temperature to the mould has been realized, need not to make the breakable lid product of launch canister (case) fast through many times of shaping process turnover.
Description
Technical Field
The invention belongs to the technical field of high polymer rigid polyurethane molding, and particularly relates to a square frame type fragile cover and a preparation method thereof.
Background
With the continuous development of polymer composite material technology, a great deal of research on composite material fragile covers is carried out by domestic and foreign scholars, and the research is taken as a key point. As an important component of storage and protection missiles, the structure optimization and forming process of the fragile cover is always the leading trend of launching technology, and in recent years, the rigid polyurethane foam material which is widely applied due to excellent shock resistance and shock resistance, high specific strength and high density is a novel material for manufacturing the fragile cover of the launching box (barrel). Polyurethane foam is used as a high polymer synthetic material, belongs to a pentagonal closed cell structure with high crosslinking degree and regular interior, can be respectively prepared into semi-hard polyurethane, soft polyurethane and other types according to different required product performances and production formulas, is the hard PU technology which takes MDI as a raw material and is successfully developed by ICI companies in the United states at first, is used for plate parts in rocket engines and airplane interlayers, and is popularized to the fields of building decoration, vehicle engineering, ships and the like.
The preparation method of the rigid polyurethane foam comprises a prepolymer method, a semi-prepolymer method and a one-step method. At present, the one-step process is widely applied, the synthesis process of an intermediate is omitted in the foam material produced by the one-step process, raw material purchase and equipment investment are less, the production steps are simpler and more convenient, and the forming of the fragile cover product of the launching tube (box) is powerfully promoted.
Disclosure of Invention
The invention provides a square frame type fragile cover and a preparation method thereof for solving the problems.
The method is realized by the following technical scheme:
1. a square frame type breakable cover is made of white material and isocyanate; the white material consists of 85-90 parts of polyol, 15 parts of polyether polyol, 10-15 parts of phenylenediamine polyether, 5-8 parts of foaming agent, 0.2-0.6 part of aging agent, 0.6-0.8 part of catalyst and 1-1.7 parts of hydrolysis resistant agent; the isocyanate accounts for 130 to 160 parts by weight.
2. The preparation method of the square fragile cover is characterized in that the square fragile cover is prepared by adopting a mode of laying solvent-free mesh cloth.
Further, the preparation method of the fragile cover specifically comprises the following steps:
A. mixing 85-90 parts of polyol and 15 parts of polyether polyol, 10-15 parts of phenylenediamine polyether, 5-8 parts of foaming agent, 0.2-0.6 part of aging agent, 0.6-0.8 part of catalyst and 1-1.7 parts of hydrolysis resistant agent, and stirring and mixing at the speed of 1200-1400 r/min for 5min to obtain a white material;
B. connecting an oil outlet pipeline and an oil return pipeline in a mold temperature regulator with oil temperature pipeline interfaces of an upper mold and a lower mold of a mold respectively, setting the temperature after starting the mold temperature regulator, and circulating heat-conducting silicone oil in a mold oil pipe after the motor pump provides power to drive the heat-conducting silicone oil to be heated;
C. adding the white material into a charging bucket of a high-pressure foaming machine, mixing and stirring the white material as an independent component, taking isocyanate as another component, and fully mixing and stirring the two components for 10-120 s through the high-pressure foaming machine to obtain a combined material;
D. placing an elliptical gasket on the lower die to support a special layering mode of the gridding cloth, and placing the reinforcing cloth into the lower die in advance;
E. pouring the combined material into a mold at the temperature of 25-50 ℃;
F. keeping the mold at a constant temperature of 80-120 ℃ for 1-2 hours;
G. closing the heating function of the mold temperature adjusting machine, respectively connecting a cooling water inlet and a water return interface of the mold temperature adjusting machine with a water inlet and a water outlet of a low-temperature constant-temperature circulating water tank, and uniformly cooling heat-conducting silicone oil in the mold oil pipe after pumping low-temperature water through a motor pump;
H. and demolding to obtain the fragile cap product.
In conclusion, the invention has the beneficial effects that: the invention is prepared by taking polyol and polyether polyol as main raw materials and matching with components such as flame retardant, ultraviolet-resistant absorbent and the like. The frangible cover is used as an important component in a missile launching system, can bear static air pressure within a certain numerical range, and can be opened after being broken by laser waves generated by specific gas flow. In order to overcome the problem that part of large molds cannot be uniformly heated due to the limited size of an oven, a molding method for heating and cooling a complicated component mold is provided, namely, an oil outlet pipeline and an oil return pipeline in a mold temperature regulator are respectively connected with oil temperature pipeline interfaces of an upper mold and a lower mold of the mold through controlling a temperature regulator in a mold temperature regulator, and then temperature setting is carried out, so that the purpose of controlling the temperature of the mold is achieved. The mold temperature adjusting machine is used for carrying out appropriate heating and cooling modes and a special laying layer forming method on the large-scale complex component, the operation is convenient, accurate and uniform temperature control on the mold is realized, and the fragile cover product of the launching tube (box) can be quickly prepared without multiple forming process turnover. In the forming process, the reinforcing cloth is embedded into the polyurethane material in a special laying mode that the elliptical gasket supports the grid cloth, so that the traditional cloth laying process is broken through, and the design problem of the front fragile cover is solved. The large-sized fragile box cover manufactured by adopting the specific layer laying mode of supporting the grid cloth by the oval washer has the advantages of smooth appearance, simple process, convenience in operation, high labor efficiency and convenience in popularization and application in later-stage production.
The fragile cover manufactured by the method is provided with 4 emissive grooves and 1 annular groove, and under a pressure-bearing state, the fragile cover can be structurally damaged and integrally split along the groove region, and the lower cover is split into four parts along the stress weak region under the action of shock wave impact, so that a split fracture state is achieved, and the missile can be rapidly ejected. By means of the process forming mode of laying the reinforced grid cloth, the problems of warping and deformation of the square large-size fragile protective cover after forming are solved, the pressure bearing difference between the non-weak area and the radial cross groove area is enhanced, and the application performance requirement of the large front-end fragile protective cover is met.
Detailed Description
The following is a detailed description of the embodiments of the present invention, but the present invention is not limited to these embodiments, and any modifications or substitutions in the basic spirit of the embodiments are included in the scope of the present invention as claimed in the claims.
Example 1
A. Mixing 87 parts of polyol, 15 parts of polyether polyol, 12 parts of phenylenediamine polyether, 7 parts of foaming agent, 0.4 part of aging agent, 0.7 part of catalyst and 1.5 parts of hydrolysis-resistant agent, and stirring and mixing at 1300r/min for 5min to obtain a white material;
B. connecting an oil outlet pipeline and an oil return pipeline in a mold temperature regulator with oil temperature pipeline interfaces of an upper mold and a lower mold of a mold respectively, setting the temperature after starting the mold temperature regulator, and circulating heat-conducting silicone oil in a mold oil pipe after the heat-conducting silicone oil is heated by the power provided by a motor pump;
C. adding the white material into a charging bucket of a high-pressure foaming machine, mixing and stirring the white material as an independent component, taking 145 parts of isocyanate as another component, and fully mixing and stirring the two components for 60s through the high-pressure foaming machine to obtain a combined material;
D. placing an elliptical gasket on the lower die to support a special layering mode of the gridding cloth, and placing the reinforcing cloth into the lower die in advance;
E. pouring the combined material into a mould at the temperature of 35 ℃;
F. keeping the mold constant at 100 ℃ for 2 hours;
G. and closing the heating function of the mold temperature adjusting machine, connecting the cooling water inlet and return water interface of the mold temperature adjusting machine with the water inlet and outlet of the low-temperature constant-temperature circulating water tank respectively, and pumping low-temperature water through a motor pump to uniformly cool heat-conducting silicone oil in the mold oil pipe.
H. And demolding to obtain the fragile cap product.
Example 2
A. Mixing 85 parts of polyol, 15 parts of polyether polyol, 10 parts of phenylenediamine polyether, 5 parts of foaming agent, 0.2 part of aging agent, 0.6 part of catalyst and 1 part of hydrolysis resistant agent, and stirring and mixing for 5min at the speed of 1200r/min to obtain a white material;
B. connecting an oil outlet pipeline and an oil return pipeline in a mold temperature regulator with oil temperature pipeline interfaces of an upper mold and a lower mold of a mold respectively, setting the temperature after starting the mold temperature regulator, and circulating heat-conducting silicone oil in a mold oil pipe after the heat-conducting silicone oil is heated by the power provided by a motor pump;
C. adding the white material into a charging bucket of a high-pressure foaming machine, mixing and stirring the white material as an independent component, taking 130 parts of isocyanate as another component, and fully mixing and stirring the two components for 30s through the high-pressure foaming machine to obtain a combined material;
D. placing an elliptical gasket on the lower die to support a special layering mode of the gridding cloth, and placing the reinforcing cloth into the lower die in advance;
E. pouring the combined material into a mould at the temperature of 50 ℃;
F. keeping the mold constant at 80 ℃ for 2 hours;
G. closing the heating function of the mold temperature adjusting machine, respectively connecting a cooling water inlet and a water return interface of the mold temperature adjusting machine with a water inlet and a water outlet of a low-temperature constant-temperature circulating water tank, and uniformly cooling heat-conducting silicone oil in the mold oil pipe after pumping low-temperature water through a motor pump;
H. and demolding to obtain the fragile cap product.
Example 3
A. Mixing 90 parts of polyol and 15 parts of polyether polyol, 15 parts of phenylenediamine polyether, 8 parts of foaming agent, 0.6 part of aging agent, 0.8 part of catalyst and 1.7 parts of hydrolysis resistant agent, and stirring and mixing for 5min at the speed of 1400r/min to obtain a white material;
B. connecting an oil outlet pipeline and an oil return pipeline in a mold temperature regulator with oil temperature pipeline interfaces of an upper mold and a lower mold of a mold respectively, setting the temperature after starting the mold temperature regulator, and circulating heat-conducting silicone oil in a mold oil pipe after the motor pump provides power to drive the heat-conducting silicone oil to be heated;
C. adding the white material into a charging bucket of a high-pressure foaming machine, mixing and stirring the white material as an independent component, taking 160 parts of isocyanate as another component, and fully mixing and stirring the two components for 120s through the high-pressure foaming machine to obtain a combined material;
D. placing an elliptical gasket on the lower die to support a special layering mode of the gridding cloth, and placing the reinforcing cloth into the lower die in advance;
E. pouring the combined material into a mould at the temperature of 25 ℃;
F. keeping the mold at a constant temperature of 120 ℃ for 1 hour;
G. closing the heating function of the mold temperature adjusting machine, respectively connecting a cooling water inlet and a water return interface of the mold temperature adjusting machine with a water inlet and a water outlet of a low-temperature constant-temperature circulating water tank, and uniformly cooling heat-conducting silicone oil in the mold oil pipe after pumping low-temperature water through a motor pump;
H. and demolding to obtain the fragile cap product.
Claims (3)
1. A square frame type breakable cover is characterized in that the square frame type breakable cover is made of white materials and isocyanate; the white material consists of 85-90 parts of polyol, 15 parts of polyether polyol, 10-15 parts of phenylenediamine polyether, 5-8 parts of foaming agent, 0.2-0.6 part of aging agent, 0.6-0.8 part of catalyst and 1-1.7 parts of hydrolysis resistant agent; the isocyanate accounts for 130 to 160 parts by weight.
2. The method of claim 1, wherein the frangible cover is formed by layering a solvent-free mesh.
3. A method of making a square frame type frangible lid as claimed in claim 2, comprising the steps of:
A. mixing 85-90 parts of polyol and 15 parts of polyether polyol, 10-15 parts of phenylenediamine polyether and 5-8 parts of foaming agent, and stirring and mixing for 5min at the speed of 1200-1400 r/min to obtain a white material;
B. connecting an oil outlet pipeline and an oil return pipeline in a mold temperature regulator with oil temperature pipeline interfaces of an upper mold and a lower mold of a mold respectively, setting the temperature after starting the mold temperature regulator, and circulating heat-conducting silicone oil in a mold oil pipe after the heat-conducting silicone oil is heated by the power provided by a motor pump;
C. adding the white material into a charging bucket of a high-pressure foaming machine, mixing and stirring the white material as an independent component, taking isocyanate as another component, and fully mixing and stirring the two components for 10-120 s through the high-pressure foaming machine to obtain a combined material;
D. placing an elliptical gasket on the lower die to support a special layering mode of the gridding cloth, and placing the reinforcing cloth into the lower die in advance;
E. pouring the combined material into a mold at the temperature of 25-50 ℃;
F. keeping the mold constant temperature for 1-2 hours at 80-120 ℃;
G. closing the heating function of the mold temperature adjusting machine, respectively connecting a cooling water inlet and a water return interface of the mold temperature adjusting machine with a water inlet and a water outlet of a low-temperature constant-temperature circulating water tank, and uniformly cooling heat-conducting silicone oil in the mold oil pipe after pumping low-temperature water through a motor pump;
H. and demolding to obtain the fragile cap product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211340109.0A CN115594818A (en) | 2022-10-29 | 2022-10-29 | Square frame type fragile cover and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211340109.0A CN115594818A (en) | 2022-10-29 | 2022-10-29 | Square frame type fragile cover and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN115594818A true CN115594818A (en) | 2023-01-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211340109.0A Pending CN115594818A (en) | 2022-10-29 | 2022-10-29 | Square frame type fragile cover and preparation method thereof |
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| Country | Link |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201189697Y (en) * | 2007-12-28 | 2009-02-04 | 中国铝业股份有限公司 | Heating control apparatus for carbon anode green pressing vibratory compaction mould |
| CN202011173U (en) * | 2011-01-17 | 2011-10-19 | 合肥合锻机床股份有限公司 | Mould hot oil circle heating system of interior trim part hydraulic machine of car |
| CN105017757A (en) * | 2015-06-30 | 2015-11-04 | 湖北三江航天万峰科技发展有限公司 | Method and product used for preparing friable lids |
| CN106079335A (en) * | 2016-08-04 | 2016-11-09 | 江苏文光模具技术有限公司 | The temperature varied cyclical system of a kind of injection mold and temperature varied cyclical method |
| CN106956446A (en) * | 2017-04-20 | 2017-07-18 | 咸宁海威复合材料制品有限公司 | The compression molding device and method of a kind of composite |
| CN114644083A (en) * | 2020-12-21 | 2022-06-21 | 帕洛阿尔托研究中心公司 | Triggerable mechanism and debris containment arrangement for self-destructing frangible structures and sealed receptacles |
| CN114970251A (en) * | 2022-05-12 | 2022-08-30 | 山东非金属材料研究所 | Design and manufacturing method of composite material frangible cover |
-
2022
- 2022-10-29 CN CN202211340109.0A patent/CN115594818A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201189697Y (en) * | 2007-12-28 | 2009-02-04 | 中国铝业股份有限公司 | Heating control apparatus for carbon anode green pressing vibratory compaction mould |
| CN202011173U (en) * | 2011-01-17 | 2011-10-19 | 合肥合锻机床股份有限公司 | Mould hot oil circle heating system of interior trim part hydraulic machine of car |
| CN105017757A (en) * | 2015-06-30 | 2015-11-04 | 湖北三江航天万峰科技发展有限公司 | Method and product used for preparing friable lids |
| CN106079335A (en) * | 2016-08-04 | 2016-11-09 | 江苏文光模具技术有限公司 | The temperature varied cyclical system of a kind of injection mold and temperature varied cyclical method |
| CN106956446A (en) * | 2017-04-20 | 2017-07-18 | 咸宁海威复合材料制品有限公司 | The compression molding device and method of a kind of composite |
| CN114644083A (en) * | 2020-12-21 | 2022-06-21 | 帕洛阿尔托研究中心公司 | Triggerable mechanism and debris containment arrangement for self-destructing frangible structures and sealed receptacles |
| CN114970251A (en) * | 2022-05-12 | 2022-08-30 | 山东非金属材料研究所 | Design and manufacturing method of composite material frangible cover |
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