CN114992391A - Novel fireproof and heat-insulating support and preparation method thereof - Google Patents
Novel fireproof and heat-insulating support and preparation method thereof Download PDFInfo
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- CN114992391A CN114992391A CN202210929604.9A CN202210929604A CN114992391A CN 114992391 A CN114992391 A CN 114992391A CN 202210929604 A CN202210929604 A CN 202210929604A CN 114992391 A CN114992391 A CN 114992391A
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- China
- Prior art keywords
- sign indicating
- indicating number
- support
- bracket
- lower support
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
- F16L3/08—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing
- F16L3/10—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets substantially surrounding the pipe, cable or protective tubing divided, i.e. with two or more members engaging the pipe, cable or protective tubing
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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
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/10—Homopolymers or copolymers of propene
- C08L23/12—Polypropene
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/06—Arrangements using an air layer or vacuum
- F16L59/07—Arrangements using an air layer or vacuum the air layer being enclosed by one or more layers of insulation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L59/00—Thermal insulation in general
- F16L59/12—Arrangements for supporting insulation from the wall or body insulated, e.g. by means of spacers between pipe and heat-insulating material; Arrangements specially adapted for supporting insulated bodies
-
- 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
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W90/00—Enabling technologies or technologies with a potential or indirect contribution to greenhouse gas [GHG] emissions mitigation
- Y02W90/10—Bio-packaging, e.g. packing containers made from renewable resources or bio-plastics
Abstract
The invention relates to the field of pipeline support codes, and particularly discloses a novel fireproof and heat-insulating support code and a preparation method thereof.
Description
Technical Field
The invention relates to the field of pipeline support codes, in particular to a novel fireproof and heat-insulating support code and a preparation method thereof.
Background
The plastic support code is mainly used for fixing or supporting a central refrigeration air-conditioning system, a building electric pipeline, a fire-fighting pipeline, a water and sewer pipeline and a gas pipeline, the plastic support code is processed and prepared by taking recycled PVC or polyethylene as a main raw material, and a plurality of preparation processes such as screening, smashing, preheating and the like are carried out before die assembly, so that the process is complicated, the preparation time is long, large-scale production is not facilitated, and the fireproof performance of the manufactured plastic support code finished product is not high, so that the requirement of the support code for multi-environment use at the present stage can not be met.
The technical problem to be solved by the application is as follows: how to design a support code with better fireproof performance and low heat conductivity coefficient and a preparation method thereof.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a novel fireproof and heat-insulating support code and a preparation method thereof.
The technical scheme adopted by the invention is as follows:
the utility model provides a novel adiabatic support sign indicating number of fire prevention, the support sign indicating number is formed by the combination of pop-up sign indicating number and lower support sign indicating number, forms circular through-hole between pop-up sign indicating number and the lower support sign indicating number, pop-up sign indicating number and lower support sign indicating number are mainly made by polypropylene, pop-up sign indicating number and lower support between the sign indicating number fixed connection, pop-up sign indicating number and lower support sign indicating number do not are equipped with the cavity, are filled with pure nitrogen gas or dry air in the cavity, pop-up sign indicating number and two sides of lower support sign indicating number do not are equipped with a plurality of strengthening rib.
Pure nitrogen or dry air is filled into the upper support codes and the lower support codes, so that the heat conductivity coefficient of the support codes can be reduced, and the defect of insufficient rigidity of plastic products can be overcome due to the arrangement of the reinforcing ribs.
The method for preparing the novel fireproof and heat-insulating bracket comprises the following steps:
s1, preparing new plastic mixed granules according to a support code formula;
s2, adding the new plastic mixed particles into a plastic injection machine, and heating the new plastic mixed particles at the temperature of 210-220 ℃ for 20 minutes;
s3, mixing the heated plastic with new particles, and injecting the mixed plastic into a mold through a plastic injection machine;
s4, cooling and demolding to obtain primary finished products of the upper support codes and the lower support codes respectively;
s5, welding and sealing the primary finished products of the upper support codes and the lower support codes through an ultrasonic welding machine, vacuumizing the welding ports of the primary finished products of the upper support codes and the lower support codes, and filling nitrogen or dry air into the welding ports;
s6, obtaining a secondary finished product;
the support code formula comprises the following components in parts by weight: 87-94 parts by weight of polypropylene particles; 1-2 parts by weight of decabromodiphenyl ether; 2-4 parts by weight of aluminum hydroxide; 1-2 parts of antimony trioxide.
Mixing various component particles according to a support code formula to form a new plastic mixed particle, heating, injection molding and demolding the new plastic mixed particle to obtain a primary finished product, wherein the support code is formed by combining an upper support code and a lower support code, the upper support code and the lower support code are welded by using an ultrasonic welding machine, nitrogen or dry air is filled into a sealing port of the primary finished product of the upper support code and the lower support code to effectively reduce the heat conductivity coefficient of the support code, so that good heat insulation performance is generated, and finally, a secondary finished product, namely the support code is obtained. The preparation method greatly reduces the preparation work before injection molding, quickly produces the bracket by a plastic injection machine, and then welds the upper bracket and the lower bracket, and can produce the bracket with good quality and consistent specification at low cost. Decabromodiphenyl ether, aluminum hydroxide and antimony trioxide are added into the formula of the support, so that the flame retardance of the support is greatly improved. Compared with the prior art that the support is formed by compressing particles, the surface of the old support is rough, water is easy to accumulate and absorb, and the support manufactured by the embodiment is formed in one step, so that the uniform and compact density of the surface of the support can be ensured.
In some embodiments of the method of making, S5 includes placing the top and bottom pallets in a jig prior to welding, and placing a polypropylene sheet between the top and bottom pallets, the polypropylene sheet having a thickness of no greater than 1 cm.
In some embodiments of the method of manufacture, S4 is demoulded with cooling using circulating water at 50 ℃.
In some embodiments of the method, S4 includes performing a degating operation on the top and bottom pallets after the top and bottom pallets are obtained. The water shearing port can trim rough edges of primary finished products, so that the specifications of the primary finished products are more uniform, and the follow-up operation of trimming rough edges of secondary finished products is omitted.
In some embodiments of the preparation method, the ultrasonic fusion splicer performs fusion sealing using a frequency of 15000-.
In some embodiments of the method, S5 includes applying a single-sided adhesive to the hole walls of the circular through holes of the welded upper and lower pallets. The single-sided adhesive is pasted to effectively reduce heat transfer between the pipeline and the support and the penetration of condensed water.
In some embodiments of the method of making, the polypropylene particles are prepared from polypropylene virgin particles and polypropylene recycled particles in a ratio of 48: 1-48: 18 parts by weight. The mixing of the polypropylene virgin particles and the regenerated particles can reduce the material cost and reduce the plastic pollution.
The invention has the beneficial effects that:
this novel adiabatic tray of fire prevention has set up a cavity that has been full of pure nitrogen gas or dry air through having set up one inside for its heat conductivity is low, and this novel adiabatic tray of fire prevention preparation method of tray is through upgrading tray prescription and upgrading preparation method, can low-cost, produce a tray that the fire resistance is good fast, this preparation method reduces the preliminary treatment process of raw materials, the production specification uniformity is high, need not the later stage and carry out appearance processing again, the tray of this scheme more can adapt to the use of more environments.
Drawings
FIG. 1 is a schematic diagram of a structure of a support structure according to the present invention;
FIG. 2 is a schematic view of the preparation process of the present invention.
The reference numerals and names in the drawings correspond to the following: 1. lifting a code; 2. lower supporting codes; 3. and (5) reinforcing ribs.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 and fig. 2, the present invention provides a technical solution: the utility model provides a novel adiabatic support sign indicating number of fire prevention, the support sign indicating number is formed by the combination of pop-up sign indicating number 1 and lower support sign indicating number 2, pop-up sign indicating number 1 and lower support form the circular through-hole that is used for fixed pipeline between the sign indicating number 2, pop-up sign indicating number 1 is mainly made by polypropylene with lower support sign indicating number 2, pop-up sign indicating number 1 and lower support fixed connection between the sign indicating number 2, pop-up sign indicating number 1 is equipped with the cavity respectively with lower support sign indicating number 2, the cavity sets up in pop-up sign indicating number 1 and lower support sign indicating number 2's inside, be filled with pure nitrogen gas in the cavity, pop-up sign indicating number 1 is equipped with a plurality of strengthening rib 3 respectively with two sides of lower support sign indicating number 2.
The preparation method of the support code comprises the following steps:
s1, preparing new plastic mixed granules according to a support code formula;
s2, adding the new plastic mixed particles into a plastic injection machine, and heating the new plastic mixed particles at the temperature of 210-220 ℃ for 20 minutes;
s3, mixing the heated plastic with new particles, and injecting the mixed plastic into a mold through a plastic injection machine;
s4, cooling and demolding by using circulating water at 50 ℃ to obtain primary finished products of the upper support codes 1 and the lower support codes 2, and performing water gap shearing operation on the primary finished products of the upper support codes 1 and the lower support codes 2;
s5, placing the primary finished products of the upper support code 1 and the lower support code 2 into a clamp, placing two polypropylene sheets between the primary finished products of the upper support code 1 and the lower support code 2, wherein the thickness of each polypropylene sheet is 1cm, performing fusion sealing on the primary finished products of the upper support code 1 and the lower support code 2 through an ultrasonic fusion machine, vacuumizing and filling nitrogen into a fusion port of the primary finished products of the upper support code 1 and the lower support code 2, performing fusion welding by using a 15000-20000Hz frequency through the ultrasonic fusion machine, and pasting single-sided adhesive on hole walls of circular through holes of the sealed primary finished products of the upper support code 1 and the lower support code 2;
s6, obtaining a secondary finished product, namely a support code;
the support code formula comprises the following components in parts by weight: 90 parts by weight of polypropylene; 2 parts by weight of decabromodiphenyl ether; 4 parts by weight of aluminum hydroxide; antimony trioxide 2 parts by weight. Wherein, the polypropylene particles are prepared from polypropylene new material particles and polypropylene regenerated particles in a ratio of 40: 1 weight portion and mixing.
Because the nitrogen heat conductivity coefficient is lower, the heat conductivity coefficient of the support can be effectively reduced by vacuumizing and filling nitrogen into the welding port of the primary finished product of the upper support 1 and the lower support 2, and good heat insulation performance is generated.
The hole walls of the circular through holes of the primary finished products of the sealed upper support codes 1 and the sealed lower support codes 2 are pasted with single-sided glue, so that the heat transfer between the pipelines and the support codes and the penetration of condensed water are effectively reduced.
Decabromodiphenyl ether serving as an organic flame retardant is added into polypropylene, and the decabromodiphenyl ether and antimony trioxide are used in combination, so that the flame retardant effect is better; aluminum hydroxide is added to polypropylene as an inorganic flame retardant, economically and effectively improving the flame retardancy of the product. The properties of the resulting code are shown in the following table:
| performance item | Basis of detection | This example | Old bracket |
| Coefficient of thermal conductivity (W/m.k) | GB/T 10294-2008 | 0.012 | 0.16 |
| Smoke density rating | GB/T 8627-2007 | 45 | 61 |
| Water absorption (%) | GB/T 1034-2008 | <0.01 | 1 |
| Tensile strength (Mpa) | GB/T 1040.1-2018 | 41 | 26 |
| Apparent density (g/cm) 3 ） | GB/T 6343-2009 | 0.05 | 1.2 |
| Oxygen index (%) | GB/T 2406-93 | 32 | 26 |
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a novel adiabatic support sign indicating number of preventing fires, the support sign indicating number is formed by pop-up sign indicating number (1) and lower support sign indicating number (2) combination, pop-up sign indicating number (1) and lower support form circular through-hole between sign indicating number (2), a serial communication port, pop-up sign indicating number (1) and lower support sign indicating number (2) are made by the mixture of polypropylene, decabromodiphenyl ether, aluminium hydroxide and antimony trioxide, fixed connection between pop-up sign indicating number (1) and lower support sign indicating number (2), pop-up sign indicating number (1) and lower support sign indicating number (2) are equipped with the cavity respectively, be full of pure nitrogen gas or dry air in the cavity, two sides of pop-up sign indicating number (1) and lower support sign indicating number (2) are equipped with a plurality of strengthening rib (3) respectively.
2. The method for preparing the novel fireproof and heat-insulating bracket according to claim 1 is characterized by comprising the following steps of:
s1, preparing new plastic mixed granules according to a support code formula;
s2, adding the new plastic mixed particles into a plastic injection machine, and heating the new plastic mixed particles at the temperature of 210-220 ℃ for 20 minutes;
s3, mixing the heated plastic with new particles, and injecting the mixed plastic into a mold through a plastic injection machine;
s4, cooling and demolding to obtain primary finished products of the upper support code (1) and the lower support code (2) respectively;
s5, welding and sealing the primary finished products of the upper support codes (1) and the lower support codes (2) through an ultrasonic welding machine, vacuumizing the welding ports of the primary finished products of the upper support codes (1) and the lower support codes (2), and filling nitrogen or dry air into the welding ports;
s6, obtaining a secondary finished product;
the support code formula comprises the following components in parts by weight: 87-94 parts by weight of polypropylene particles; 1-2 parts by weight of decabromodiphenyl ether; 2-4 parts by weight of aluminum hydroxide; 1-2 parts of antimony trioxide.
3. The method for preparing a novel fire-proof and heat-insulating bracket as claimed in claim 2, wherein the step S5 comprises placing the primary finished products of the upper bracket (1) and the lower bracket (2) into a fixture before welding, and placing a polypropylene sheet between the primary finished products of the upper bracket (1) and the lower bracket (2), wherein the thickness of the polypropylene sheet is not more than 1 cm.
4. The method for preparing the novel fireproof and heat-insulating bracket as claimed in claim 2, wherein the S4 is subjected to cooling and demoulding by using circulating water at 50 ℃.
5. The method for preparing a novel fire-proof and heat-insulating bracket as claimed in claim 2, wherein the step S4 comprises the step of cutting a water gap of the primary finished products of the upper bracket (1) and the lower bracket (2) after the primary finished products of the upper bracket (1) and the lower bracket (2) are obtained.
6. The method for preparing a novel fireproof and heat-insulating support code as claimed in claim 2, wherein the ultrasonic welding machine uses 15000-20000Hz frequency for welding sealing.
7. The method for preparing the novel fireproof and heat-insulating bracket as claimed in claim 2, wherein the step S5 comprises applying single-sided glue to the hole walls of the circular through holes of the primary finished product of the sealed upper bracket (1) and the sealed lower bracket (2).
8. The method for preparing the novel fireproof and heat-insulating support code according to claim 2, wherein the polypropylene particles are prepared from polypropylene new material particles and polypropylene regenerated particles in a ratio of 48: 1-48: 18 parts by weight.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210929604.9A CN114992391A (en) | 2022-08-04 | 2022-08-04 | Novel fireproof and heat-insulating support and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210929604.9A CN114992391A (en) | 2022-08-04 | 2022-08-04 | Novel fireproof and heat-insulating support and preparation method thereof |
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| CN114992391A true CN114992391A (en) | 2022-09-02 |
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| CN202210929604.9A Pending CN114992391A (en) | 2022-08-04 | 2022-08-04 | Novel fireproof and heat-insulating support and preparation method thereof |
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Citations (9)
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|---|---|---|---|---|
| CN1286366A (en) * | 1999-08-30 | 2001-03-07 | 赵洪海 | Insulating pipe bracket |
| CN1831412A (en) * | 2006-04-07 | 2006-09-13 | 李寿山 | Ventilation/gas exhaust tube with fire resistance antistatic performance hollow structure wall |
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-
2022
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