CN110421777A - A kind of PDCPT bumper face-piece processing technology - Google Patents
A kind of PDCPT bumper face-piece processing technology Download PDFInfo
- Publication number
- CN110421777A CN110421777A CN201910722830.8A CN201910722830A CN110421777A CN 110421777 A CN110421777 A CN 110421777A CN 201910722830 A CN201910722830 A CN 201910722830A CN 110421777 A CN110421777 A CN 110421777A
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- CN
- China
- Prior art keywords
- pdcpt
- dcpt
- monomer
- material temperature
- bumper face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/0001—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor characterised by the choice of material
-
- 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
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2045/00—Use of polymers of unsaturated cyclic compounds having no unsaturated aliphatic groups in a side-chain, e.g. coumarone-indene resins or derivatives thereof, as moulding material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3044—Bumpers
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
Abstract
The invention discloses a kind of PDCPT bumper face-piece processing technologys, include the following steps, S1, DCPT monomer (dicyclopentadiene) and major catalyst are added in material temperature machine A and DCPT monomer and co-catalyst are added in material temperature machine B；S2, pass through constant displacement pump simultaneously to mold injection after internal DCPT monomer is adequately stirred and heated by material temperature machine A and material temperature machine B；S3, in injection moulding process, mixing head hits the DCPT monomer in die cavity repeatedly, formed PDCPT (polydicyclopentadiene)；S4, cooled down by die heater to mold, PDCPT is demoulded after mould inside cooling and shaping by pulling equipment；S5, molding bumper face-piece surface is polished.The technique is formed using the PDCPD Material injection polymerization reaction of high tenacity, it is able to achieve the consistency of product, reduces own wt, shorten the process-cycle, improve resistance to deformation cracking, avoid the functions such as corrosion and durable aging.
Description
Technical field
The invention belongs to auto parts technical field of producing, and in particular to a kind of PDCPT bumper face-piece processing work
Skill.
Background technique
Polydicyclopentadiene PDCPD is the homopolymer or copolymer of dicyclopentadiene (DCPD).For a kind of cross-linked three D net
Shape Structural Engineering plastics.Density 1.03g/cm3,120 DEG C of heat distortion temperature.In -40 DEG C of timeinvariances.It is resistance to general acid, alkali, organic
Solvent, but intolerant to aromatic hydrocarbons and halogenated hydrocarbons.1790~2070MPa of bending modulus.Tensile strength 34MPa.Glass transition temperature 185.5
℃.Izod notched impact strength 427J/m.In the presence of the catalyst that tungsten hexachloride and aluminium diethyl monochloride form, by bicyclic
Pentadiene ring opening metathesis polymerization is made.Various products can be made of reaction injection molding.And currently, Domestic Insurance thick stick face-piece is
Metal plate punching, injection structure, SMC molding and FRP realize, product be easily deformed or be broken after being impacted exist simultaneously it is durable
The defects of aging, corrosion.Prior art mold investment is big, and manufacturing procedure is more, and product own wt is larger, so needing a kind of new
Processing technology come into operation and solve the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of PDCPT bumper face-piece processing technologys to come into operation, to solve above-mentioned back
The problem of being proposed in scape technology.
To achieve the above object, the invention provides the following technical scheme: a kind of PDCPT bumper face-piece processing technology, packet
Include following steps,
S1, DCPT monomer (dicyclopentadiene) and major catalyst are added in material temperature machine A and is added in material temperature machine B
DCPT monomer and co-catalyst；
S2, pass through after internal DCPT monomer is adequately stirred and heated by material temperature machine A and material temperature machine B and determine
Amount pump is simultaneously to mold injection；
S3, in injection moulding process, mixing head hits the DCPT monomer in die cavity repeatedly, formed PDCPT (poly bis ring
Pentadiene)；
S4, cooled down by die heater to mold, PDCPT is carried out after mould inside cooling and shaping by pulling equipment
Demoulding；
S5, molding bumper face-piece surface is polished.
Preferably, the major catalyst is tungsten hexachloride, and the co-catalyst is aluminium diethyl monochloride.
Preferably, material temperature machine guarantees that DCPT monomer is in temperature constant state, and die heater control in the injection moulding process of step S3
Molding jig is in temperature constant state.
Preferably, one end of the mixing head penetrates the inside of die cavity by the through-hole opened up on mold, and mixing head and
Sealing ring is provided between through-hole.
Preferably, the sealing ring is nitrile rubber or fluorubber material.
Technical effect and advantage of the invention: the PDCPT bumper face-piece processing technology, by material temperature machine to two parts of DCPT
Monomer is pre-processed, and is input in the die cavity of mold through mixing head impingement mix, accelerates to generate PDCPT material,
And in in-mold molding, formed using the PDCPD Material injection polymerization reaction of high tenacity, it be able to achieve product consistency,
It reduces own wt, shorten the process-cycle, improve production efficiency, improve resistance to deformation cracking, avoid the function such as corrosion and durable aging
Energy.
Detailed description of the invention
Fig. 1 is real work schematic diagram of the present invention；
In figure: 1, material temperature machine A；2, material temperature machine B；3, mold；4, mixing head；5, sealing ring；6, through-hole.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The present invention provides a kind of PDCPT bumper face-piece processing technologys as shown in Figure 1, include the following steps,
S1, DCPT monomer (dicyclopentadiene) and major catalyst are added in material temperature machine A1 and is added in material temperature machine B2
DCPT monomer and co-catalyst；
S2, pass through after internal DCPT monomer is adequately stirred and heated by material temperature machine A1 and material temperature machine B2
Constant displacement pump is molded to mold 3 simultaneously；Two parts of DCPT monomer materials are located in advance respectively by material temperature machine A1 and material temperature machine B2
Reason is heated and controls suitable temperature, guarantees that DCPT monomer can quickly be reacted when entering in mold 3.
S3, in injection moulding process, mixing head 4 hits the DCPT monomer in die cavity repeatedly, formed PDCPT it is (poly bis
Cyclopentadiene)；
S4, cooled down by die heater to mold 3, PDCPT be cooled and shaped inside the mold 3 after by pulling equipment into
Row demoulding；Impingement mix is carried out to the DCPT monomer being injected into 3 die cavity of mold by mixing head 4, mixed liquor is very short
It is chemically reacted in time, net high-polymer polymer can be formed, die sinking is detached from product after cured, further speeds up
The formation efficiency of PDCPT, to accelerate production efficiency.
S5, molding bumper face-piece surface is polished.
The major catalyst is tungsten hexachloride, and the co-catalyst is aluminium diethyl monochloride, is urged by major catalyst and helping
The cooperation of agent promotes the ring-opening metathesis reaction of DCPT, accelerates the generation of PDCPT.
Material temperature machine guarantees that DCPT monomer is in temperature constant state in the injection moulding process of step S3, and die heater controls mold 3
In temperature constant state, guarantee that DCPT monomer and mold 3 keep constant temperature, to guarantee that DCPT monomer can quick comprehensive open loop discrimination
Change reaction and generates PDCPT.
One end of the mixing head 4 penetrates the inside of die cavity, and mixing head 4 and through-hole by the through-hole 6 opened up on mold 3
It is provided with sealing ring 5 between 6, guarantees the leakproofness between mixing head 4 and 3 through-hole 6 of mold, the mixed liquor in die cavity is avoided to let out
Leakage.
The sealing ring 5 is nitrile rubber or fluorubber material, guarantees the heat resistance of sealing ring 5, to guarantee its use
Service life.
Finally, it should be noted that the foregoing is only a preferred embodiment of the present invention, it is not intended to restrict the invention,
Although the present invention is described in detail referring to the foregoing embodiments, for those skilled in the art, still may be used
To modify the technical solutions described in the foregoing embodiments or equivalent replacement of some of the technical features,
All within the spirits and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in of the invention
Within protection scope.
Claims (5)
1. a kind of PDCPT bumper face-piece processing technology, it is characterised in that: include the following steps,
S1, DCPT monomer (dicyclopentadiene) and major catalyst are added in material temperature machine A and addition DCPT is mono- in material temperature machine B
Body and co-catalyst；
S2, pass through constant displacement pump after internal DCPT monomer is adequately stirred and heated by material temperature machine A and material temperature machine B
Simultaneously to mold injection；
S3, in injection moulding process, mixing head hits the DCPT monomer in die cavity repeatedly, formed PDCPT (poly bis ring penta 2
Alkene)；
S4, cooled down by die heater to mold, PDCPT is taken off after mould inside cooling and shaping by pulling equipment
Mould；
S5, molding bumper face-piece surface is polished.
2. a kind of PDCPT bumper face-piece processing technology according to claim 1, it is characterised in that: the major catalyst
For tungsten hexachloride, the co-catalyst is aluminium diethyl monochloride.
3. a kind of PDCPT bumper face-piece processing technology according to claim 1, it is characterised in that: in the note of step S3
Material temperature machine guarantees that DCPT monomer is in temperature constant state during modeling, and die heater control mold is in temperature constant state.
4. a kind of PDCPT bumper face-piece processing technology according to claim 1, it is characterised in that: the mixing head
One end penetrates the inside of die cavity by the through-hole opened up on mold, and sealing ring is provided between mixing head and through-hole.
5. a kind of PDCPT bumper face-piece processing technology according to claim 4, it is characterised in that: the sealing ring is Ding Qing
Rubber or fluorubber material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722830.8A CN110421777A (en) | 2019-08-06 | 2019-08-06 | A kind of PDCPT bumper face-piece processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910722830.8A CN110421777A (en) | 2019-08-06 | 2019-08-06 | A kind of PDCPT bumper face-piece processing technology |
Publications (1)
| Publication Number | Publication Date |
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| CN110421777A true CN110421777A (en) | 2019-11-08 |
Family
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| CN201910722830.8A Pending CN110421777A (en) | 2019-08-06 | 2019-08-06 | A kind of PDCPT bumper face-piece processing technology |
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Application publication date: 20191108 |