CN106626446A - Production process of outdoor ultraviolet-proof crane span structure - Google Patents
Production process of outdoor ultraviolet-proof crane span structure Download PDFInfo
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- CN106626446A CN106626446A CN201611062693.2A CN201611062693A CN106626446A CN 106626446 A CN106626446 A CN 106626446A CN 201611062693 A CN201611062693 A CN 201611062693A CN 106626446 A CN106626446 A CN 106626446A
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- glass
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- injection box
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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
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/50—Shaping or impregnating by compression not applied for producing articles of indefinite length, e.g. prepregs, sheet moulding compounds [SMC] or cross moulding compounds [XMC]
- B29C70/52—Pultrusion, i.e. forming and compressing by continuously pulling through a die
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Composite Materials (AREA)
- Mechanical Engineering (AREA)
- Reinforced Plastic Materials (AREA)
- Casting Or Compression Moulding Of Plastics Or The Like (AREA)
Abstract
The invention discloses a production process of an outdoor ultraviolet-proof crane span structure. The production process comprises the following steps: stirring and mixing isocyanate, polyhydric alcohol and an anti-ultraviolet agent in a sealed state to form a mixed material, then injecting the mixed material by an injection gun into a closed glue injection box, and passing a glass fiber raw material through a pre-formed rack into the closed glue injection box; vacuumizing the closed glue injection box, wherein the glass fibers fully impregnate the mixed material in the glue injection box; feeding the fully impregnated glass fibers in a mold cavity; placing the mold cavity on a rotary platform, wherein the rotating speed is 100-150/min, and the glass fibers in the impregnated mixed material is heated, cured and formed in the mold cavity; pulling a formed product out of the mold by using a pultrusion machine; and performing cutting and putting the product in storage. The production process has the advantages of protecting the ecological environment, reducing the potential safety hazards in production and lowering the cost of raw materials, improving the tensile strength and the bending strength of the product, and improving the ultraviolet-proof effect and the stability of product quality.
Description
Technical field
The present invention relates to highway or the cable testing bridge production technical field on highway, and in particular to a kind of outdoor anti-
Ultraviolet crane span structure production technology.
Background technology
Due to the weight of metallic cable crane span structure it is big, it is perishable the shortcomings of, currently used for the cable on highway or highway
Crane span structure is gradually substituted by nonmetallic materials, is mainly made using unsaturated polyester resin and glass fibre.
CN103244753A, discloses a kind of composite sandwich structure cable bridge, including groove segment and cover plate unit；The groove
Type unit includes side plate and base plate, and the side plate and base arrangement are the solid housing or composite that composite faces are constituted
Interlayer entity that surface layer is constituted with sandwich material etc., wherein composite are made of that, using fiber and resin, fiber is fine from carbon
Dimension, glass fibre etc., resin is from unsaturated polyester (UP), adjacent benzene resin etc..The problem of presence is：1st, due to unsaturated polyester resin
Solvent styrene is contained within, when fiber and resin thermoset Compound Machining are into crane span structure, in thermoset processes, substantial amounts of benzene second can be produced
Alkene gaseous volatilization, serious environment pollution；2nd, need to add firming agent (butanone), accelerator (tree butyl ester) etc. in production process,
The cost of material of crane span structure processing is increased, and styrene, butanone and tree butyl ester are hazardous chemicals, if operation is not
When, contingency is susceptible to, cause personal injury；3rd, in production process, the additive added in unsaturated polyester resin
(such as Calcium Carbonate, Pulvis Talci manual control, cause the crane span structure product quality difference for pulling out very big；4th, preventing ultraviolet effect is poor.
The content of the invention
In view of this, it is an object of the invention to provide a kind of outdoor anti-ultraviolet crane span structure production technology so as to protection
Ecological environment, reduce production safety hidden danger and cost of material, improve product stretching and bending strength, improve uvioresistant effect with
And the advantage of product quality stability.
The present invention by following technological means solution above-mentioned technical problem, a kind of outdoor anti-ultraviolet crane span structure production technology,
Comprise the following steps：
(1) isocyanates, polyhydric alcohol and ultraviolet (UV) resistant agent are individually positioned in three closed filling chambers, and three fillings
Chamber connects batch mixer, and it is bonded that carbamate occurs in the hydroxyl reaction in the isocyanate group in isocyanates and polyhydric alcohol
Connect, addition polymerization forms polyurethane, polyurethane and ultraviolet (UV) resistant agent are mixed to form compound, subsequent compound be injected rifle inject it is closed
In glue-injection box, whole process is closed feed system, is not required to add any additive, and glass fibre raw material is passed through into preformation
Type frame, into closed glue-injection box, the glass fibre is glass fiber yarn and glass mat and glass mat is distributed in glass
The levels of glass silvalin；
(2) to closed glue-injection box evacuation, and cause glass fibre that compound is sufficiently impregnated with glue-injection box；
(3) glass fibre after being sufficiently impregnated with enters mold cavity；
(4) mold cavity is placed on rotation platform, rotating speed is 100-150/ minutes, the glass fibre for impregnating compound exists
Mold cavity internal heating curing molding；
(5) shaped article is pulled out into mould using extruder；
(6) cut off according to the length requirement of product；
(7) finished product after cutting off is put into finished room；Product shell thickness is 2-2.5mm, content of glass fiber in every rice product
For 75-85%, polyurethane content is 25-15%.
Further, the molding that is heating and curing in step (4) is divided into two steps, first step hot pressing 1-3 under the conditions of 200-250 DEG C
Second, second step makes the glass fibre of dipping compound in 120-180 DEG C of mold cavity internal heating curing molding.
Further, glass fiber yarn content is 60-70% in every rice product, and glass mat content is 10-20%.
Beneficial effects of the present invention：
1) present invention impregnates under vacuum conditions to glass fibre, eliminates the impact of bubble, makes compound and glass
Glass fiber is sufficiently impregnated with mixing, is conducive to improve product quality.
2) present invention is placed on mold cavity on rotation platform, thermoset forming is carried out under apocarpy, in centrifugal force
Under effect, make compound be evenly distributed, improve the interior state of crane span structure thermoset forming, be conducive to improve product quality.
3) thermoset forming of the present invention is carried out in two steps, the first step accelerates the vaporization of moisture in compound, it is to avoid water steaming
Impact of the gas to thermoset forming technique.
4) glass fibre is entered in closed glue-injection box, polyurethane is injected in glue-injection box by filling gun, glass fibre
Compound is impregnated in closed glue-injection box, it is closed due to glue-injection box, it is to avoid the factor such as ambient temperature, humidity is to mixed
The impact of material and glass fibre is closed, the quality of product is improve；And charging processing process is by equipment automation control, it is not required to add
Plus any additive, the stable uniformity of product quality has been effectively ensured.
5) using polyurethane as binding agent, by glass fiber impregnated in polyurethane, using polyurethane as binding agent
In injecting glue-injection box, glass fibre is sufficiently impregnated with polyurethane, and glass fiber impregnated rear in mould cavity, Jing is heat-set into
Type makes product, and heating-up temperature is 120-180 DEG C in its mould, other firming agent need not be added in whole process, is promoted
Enter agent etc., not only reduce the cost of raw material, it also avoid the harmful gass such as styrene to the pollution of environment and to operator
Personal injury.
6) multiple pieces of glass fiber felt enhances the arrangement of fiber in product respectively positioned at the levels of glass fiber yarn, carries
The high tensile strength and bending strength of cell body and lid, so as to reduce work progress in cause to scrap because of crane span structure strength problem
Phenomenon occur, also allowing for buying side carries out Site Detection, effectively increases crane span structure quality and efficiency of construction.
Specific embodiment
The present invention is better illustrated with reference to embodiment.
Embodiment 1
A kind of outdoor anti-ultraviolet crane span structure production technology, comprises the following steps：
(1) isocyanates, polyhydric alcohol and ultraviolet (UV) resistant agent are individually positioned in three closed filling chambers, and three fillings
Chamber connects batch mixer, and it is bonded that carbamate occurs in the hydroxyl reaction in the isocyanate group in isocyanates and polyhydric alcohol
Connect, addition polymerization forms polyurethane, polyurethane and ultraviolet (UV) resistant agent are mixed to form compound, subsequent compound be injected rifle inject it is closed
In glue-injection box, whole process is closed feed system, is not required to add any additive, and glass fibre raw material is passed through into preformation
Type frame, into closed glue-injection box, the glass fibre is glass fiber yarn and glass mat and glass mat is distributed in glass
The levels of glass silvalin；
(2) to closed glue-injection box evacuation, and cause glass fibre that compound is sufficiently impregnated with glue-injection box；
(3) glass fibre after being sufficiently impregnated with enters mold cavity；
(4) mold cavity is placed on rotation platform, rotating speed is 100/ minute, impregnates the glass fibre of compound in mould
Intracavity is heating and curing molding, and the molding that is heating and curing is divided into two steps, first step hot pressing 1 second under the conditions of 200 DEG C, and second step makes dipping
The glass fibre of compound is in 120 DEG C of mold cavity internal heating curing molding；
(5) shaped article is pulled out into mould using extruder；
(6) cut off according to the length requirement of product；
(7) finished product after cutting off is put into finished room；Product shell thickness is 2mm, and content of glass fiber is in every rice product
75%, polyurethane content is 25%, and glass fiber yarn content is 60% in every rice product, and glass mat content is 15%.
Embodiment 2
A kind of outdoor anti-ultraviolet crane span structure production technology, comprises the following steps：
(1) isocyanates, polyhydric alcohol and ultraviolet (UV) resistant agent are individually positioned in three closed filling chambers, and three fillings
Chamber connects batch mixer, and it is bonded that carbamate occurs in the hydroxyl reaction in the isocyanate group in isocyanates and polyhydric alcohol
Connect, addition polymerization forms polyurethane, polyurethane and ultraviolet (UV) resistant agent are mixed to form compound, subsequent compound be injected rifle inject it is closed
In glue-injection box, whole process is closed feed system, is not required to add any additive, and glass fibre raw material is passed through into preformation
Type frame, into closed glue-injection box, the glass fibre is glass fiber yarn and glass mat and glass mat is distributed in glass
The levels of glass silvalin；
(2) to closed glue-injection box evacuation, and cause glass fibre that compound is sufficiently impregnated with glue-injection box；
(3) glass fibre after being sufficiently impregnated with enters mold cavity；
(4) mold cavity is placed on rotation platform, rotating speed is 120/ minute, impregnates the glass fibre of compound in mould
Intracavity is heating and curing molding, and the molding that is heating and curing is divided into two steps, first step hot pressing 2 seconds under the conditions of 220 DEG C, and second step makes dipping
The glass fibre of compound is in 140 DEG C of mold cavity internal heating curing molding；
(5) shaped article is pulled out into mould using extruder；
(6) cut off according to the length requirement of product；
(7) finished product after cutting off is put into finished room；Product shell thickness is 2.3mm, and content of glass fiber is in every rice product
80%, polyurethane content is 20%, and glass fiber yarn content is 65% in every rice product, and glass mat content is 15%.
Embodiment 3
A kind of outdoor anti-ultraviolet crane span structure production technology, comprises the following steps：
(1) isocyanates, polyhydric alcohol and ultraviolet (UV) resistant agent are individually positioned in three closed filling chambers, and three fillings
Chamber connects batch mixer, and it is bonded that carbamate occurs in the hydroxyl reaction in the isocyanate group in isocyanates and polyhydric alcohol
Connect, addition polymerization forms polyurethane, polyurethane and ultraviolet (UV) resistant agent are mixed to form compound, subsequent compound be injected rifle inject it is closed
In glue-injection box, whole process is closed feed system, is not required to add any additive, and glass fibre raw material is passed through into preformation
Type frame, into closed glue-injection box, the glass fibre is glass fiber yarn and glass mat and glass mat is distributed in glass
The levels of glass silvalin；
(2) to closed glue-injection box evacuation, and cause glass fibre that compound is sufficiently impregnated with glue-injection box；
(3) glass fibre after being sufficiently impregnated with enters mold cavity；
(4) mold cavity is placed on rotation platform, rotating speed is 150/ minute, impregnates the glass fibre of compound in mould
Intracavity is heating and curing molding, and the molding that is heating and curing is divided into two steps, first step hot pressing 3 seconds under the conditions of 250 DEG C, and second step makes dipping
The glass fibre of compound is in 180 DEG C of mold cavity internal heating curing molding；
(5) shaped article is pulled out into mould using extruder；
(6) cut off according to the length requirement of product；
(7) finished product after cutting off is put into finished room；Product shell thickness is 2.5mm, and content of glass fiber is in every rice product
85%, polyurethane content is 15%, and glass fiber yarn content is 65% in every rice product, and glass mat content is 20%.
Finally illustrate, above example is only unrestricted to illustrate technical scheme, although with reference to compared with
Good embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the skill of the present invention
Art scheme is modified or equivalent, and without deviating from the objective and scope of technical solution of the present invention, it all should cover at this
In the middle of the right of invention.
Claims (3)
1. a kind of outdoor anti-ultraviolet crane span structure production technology, it is characterised in that comprise the following steps：
(1) isocyanates, polyhydric alcohol and ultraviolet (UV) resistant agent are individually positioned in three closed filling chambers, and three filling chambers are equal
There is carbamate key connecting with the hydroxyl reaction in polyhydric alcohol in connection batch mixer, the isocyanate group in isocyanates, plus
Combinate form generating polyurethane, polyurethane is mixed to form compound with ultraviolet (UV) resistant agent, and subsequent compound is injected rifle and injects closed injecting glue
In box, whole process is closed feed system, is not required to add any additive, and glass fibre raw material is passed through into preforming
Frame, into closed glue-injection box, the glass fibre is glass fiber yarn and glass mat and glass mat is distributed in glass
The levels of silvalin；
(2) to closed glue-injection box evacuation, and cause glass fibre that compound is sufficiently impregnated with glue-injection box；
(3) glass fibre after being sufficiently impregnated with enters mold cavity；
(4) mold cavity is placed on rotation platform, rotating speed is 100-150/ minutes, impregnates the glass fibre of compound in mould
Intracavity is heating and curing molding；
(5) shaped article is pulled out into mould using extruder；
(6) cut off according to the length requirement of product；
(7) finished product after cutting off is put into finished room；Product shell thickness is 2-2.5mm, and content of glass fiber is 75- in every rice product
85%, polyurethane content is 25-15%.
2. outdoor anti-ultraviolet crane span structure production technology according to claim 1, it is characterised in that the heating in step (4)
Curing molding is divided into two steps, and first step hot pressing 1-3 seconds under the conditions of 200-250 DEG C, second step makes the glass fibers of dipping compound
Dimension is in 120-180 DEG C of mold cavity internal heating curing molding.
3. outdoor anti-ultraviolet crane span structure production technology according to claim 2, it is characterised in that glass fibers in per rice product
Dimension yarn content is 60-70%, and glass mat content is 10-20%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062693.2A CN106626446A (en) | 2016-11-28 | 2016-11-28 | Production process of outdoor ultraviolet-proof crane span structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611062693.2A CN106626446A (en) | 2016-11-28 | 2016-11-28 | Production process of outdoor ultraviolet-proof crane span structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106626446A true CN106626446A (en) | 2017-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611062693.2A Pending CN106626446A (en) | 2016-11-28 | 2016-11-28 | Production process of outdoor ultraviolet-proof crane span structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111169034A (en) * | 2018-11-10 | 2020-05-19 | 浙江盛迪新材料股份有限公司 | Preparation method of polyurethane section |
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| CN101733979A (en) * | 2009-12-19 | 2010-06-16 | 祁锦明 | Resin conical rod of multi-longitudinal-fiber enhancement layer and manufacturing method thereof |
| CN103568337A (en) * | 2012-07-25 | 2014-02-12 | 张长安 | Preparation method for contact moulded polyurethane or polyurea composite material member |
| CN103600499A (en) * | 2013-11-13 | 2014-02-26 | 杭州天允科技有限公司 | Processing method of polyurethane composite crane span structure |
| CN104760299A (en) * | 2015-03-17 | 2015-07-08 | 哈尔滨工程大学 | Fiber-felt-reinforced composite material solar energy assembly frame and preparation method thereof |
-
2016
- 2016-11-28 CN CN201611062693.2A patent/CN106626446A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101733979A (en) * | 2009-12-19 | 2010-06-16 | 祁锦明 | Resin conical rod of multi-longitudinal-fiber enhancement layer and manufacturing method thereof |
| CN103568337A (en) * | 2012-07-25 | 2014-02-12 | 张长安 | Preparation method for contact moulded polyurethane or polyurea composite material member |
| CN103600499A (en) * | 2013-11-13 | 2014-02-26 | 杭州天允科技有限公司 | Processing method of polyurethane composite crane span structure |
| CN104760299A (en) * | 2015-03-17 | 2015-07-08 | 哈尔滨工程大学 | Fiber-felt-reinforced composite material solar energy assembly frame and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 贾立军等: "《复合材料加工工艺》", 30 September 2007 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111169034A (en) * | 2018-11-10 | 2020-05-19 | 浙江盛迪新材料股份有限公司 | Preparation method of polyurethane section |
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Application publication date: 20170510 |
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