CN112373412A - Automobile door plate buckle and preparation method thereof - Google Patents
Automobile door plate buckle and preparation method thereof Download PDFInfo
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- CN112373412A CN112373412A CN202011091724.3A CN202011091724A CN112373412A CN 112373412 A CN112373412 A CN 112373412A CN 202011091724 A CN202011091724 A CN 202011091724A CN 112373412 A CN112373412 A CN 112373412A
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- polyformaldehyde
- coupling agent
- automobile door
- door panel
- granules
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
- B60R13/0237—Side or rear panels
- B60R13/0243—Doors
-
- 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
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L59/00—Compositions of polyacetals; Compositions of derivatives of polyacetals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R13/00—Elements for body-finishing, identifying, or decorating; Arrangements or adaptations for advertising purposes
- B60R13/02—Internal Trim mouldings ; Internal Ledges; Wall liners for passenger compartments; Roof liners
- B60R2013/0293—Connection or positioning of adjacent panels
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention belongs to the technical field of automobile decoration parts and material processing, and discloses an automobile door panel buckle and a preparation method thereof. The buckle comprises a clamping groove part and a clamping hole part, wherein the clamping groove part and the clamping hole part are obtained by one-time injection molding of toughened polyformaldehyde. The preparation method comprises the following steps: adding the polyformaldehyde granules, the polyurethane elastomer, the inorganic nano powder and the coupling agent into an extruder for melting, extruding and granulating to obtain toughened polyformaldehyde granules; and carrying out one-time injection molding on the obtained toughened polyformaldehyde granules to obtain the automobile door panel buckle. The automobile door plate buckle is obtained by one-time injection molding of toughened polyformaldehyde, the integral structure is integrally formed without splicing, and the fatigue resistance and the dimensional stability are good. And the polyformaldehyde material is modified by the TPU, the inorganic nano powder and the coupling agent, so that the toughness and the strength of the product are obviously improved, the service life of the product is long, and the using effect is good.
Description
Technical Field
The invention relates to the technical field of automobile decoration parts and material processing, in particular to an automobile door panel buckle and a preparation method thereof.
Background
The automobile door panel buckle is a plastic buckle used for fixing an automobile decorative plate, and a round-head plastic buckle is generally used. This plastics buckle generally includes draw-in groove portion and card hole portion, and the draw-in groove portion is a circular plastic piece for get into the draw-in groove of automobile decorative board and block, card hole portion is used for the card to advance the panel beating of automobile body door plant downtheholely, and when the installation, the workman need will be equipped with the panel beating of this plastics buckle and advance the panel beating hole of automobile body and can accomplish the installation hard. The clamping hole part is generally in a conical shape, and a limiting groove clamped with the buckle base on the vehicle body door panel is arranged at the joint of the clamping hole part and the clamping groove part so as to realize clamping fixation of the vehicle decorative plate and the vehicle body door panel.
According to the operation requirement of the current market to the automobile door panel buckle: 1. the buckle has the requirements of disassembly and assembly and insertion force; first insertion force: < 80N, first pull-out force: 180N-250N, meets the requirement of 5 times of disassembly and assembly, and the withdrawal force is from 2 times to 5 times: is greater than 100N. 2. Snap high temperature (90 ℃, 168H); the shape and surface must not be altered to the detriment of the service properties. 3. Low temperature of the buckle (-40 ℃, 28H); the shape and surface must not be altered to the detriment of the service properties. 4. The buckle environment is circulated; the shape and surface are not allowed to crack or damage. 5. Buckling the water tightness requirement; the fastener installation place does not have the water leakage phenomenon. The automobile door panel buckle has extremely high requirements on the structure, the forming mode and the preparation material of the automobile door panel buckle. Common plastics and molding methods often cannot meet the requirements, so that the toughness, fatigue resistance, creep resistance, chemical resistance and dimensional stability of the buckle material need to be further improved.
Disclosure of Invention
Aiming at the defects and shortcomings of the prior art, the invention mainly aims to provide the automobile door panel buckle.
The invention also aims to provide a preparation method of the automobile door panel buckle.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides an automobile door panel buckle, includes draw-in groove portion and card hole portion, draw-in groove portion and card hole portion are obtained through once injection moulding with toughening polyformaldehyde.
Furthermore, the clamping groove part is provided with a first clamping groove and a second clamping groove; card hole portion includes the insertion piece with draw-in groove portion fixed connection, is provided with a set of joint piece of symmetry each other in the both sides of insertion piece, and the one end fixed connection of joint piece is terminal in the top of insertion piece, and the other end downward sloping of joint piece extends and fixed connection in draw-in groove portion, the joint department of joint piece and draw-in groove portion is equipped with the spacing groove.
Furthermore, a limiting block is arranged between the clamping sheet and the inserting sheet and fixed on the clamping sheet.
The preparation method of the automobile door plate buckle comprises the following preparation steps:
(1) preparing toughened polyformaldehyde granules: adding Polyformaldehyde (POM) granules, a polyurethane elastomer (TPU), inorganic nano powder and a coupling agent into an extruder for melting, extruding and granulating to obtain toughened polyformaldehyde granules;
(2) the buckle is formed by one-time injection molding: and (3) carrying out one-step injection molding on the toughened polyformaldehyde granules obtained in the step (1) to obtain the automobile door panel buckle.
Further, the materials in the step (1) are added in the following weight portions:
polyoxymethylene pellets: 100 parts of (A);
polyurethane elastomer: 40-80 parts;
inorganic nano-powder: 5-10 parts;
coupling agent: 0.2-1 part.
Further, the inorganic nano powder in the step (1) is at least one selected from nano calcium carbonate powder, nano silica powder, nano alumina powder and nano titanium dioxide powder.
Further, the coupling agent in the step (1) is selected from a titanate coupling agent, an aluminate coupling agent or a silane coupling agent.
More preferably, the inorganic nanopowder is a nanosilica powder, and the coupling agent is an isocyanatosilane coupling agent. The isocyanate silane coupling agent comprises 3-isocyanate propyl trimethoxy silane or 3-isocyanate propyl triethoxy silane.
Preferably, the inorganic nano powder and the coupling agent are subjected to surface modification reaction, and then are added into an extruder with polyformaldehyde granules and a polyurethane elastomer for extrusion granulation to obtain the toughened polyformaldehyde granules.
Preferably, the inorganic nano powder and the coupling agent are subjected to surface modification reaction, then are added into an extruder with the polyurethane elastomer to be uniformly mixed, and then are added with the polyformaldehyde granules to be extruded and granulated to obtain the toughened polyformaldehyde granules.
Further, the melting temperature in the step (1) is 170-210 ℃.
Further, the conditions of the one-shot injection molding in the step (2) are as follows:
pre-drying: at the temperature of 80-90 ℃, 4-6 h;
barrel temperature: the front section is 180-210 ℃, the middle section is 175-200 ℃, and the rear section is 170-190 ℃;
temperature of the die: 50-90 ℃.
Compared with the prior art, the invention has the beneficial effects that:
(1) the automobile door plate buckle is obtained by one-time injection molding of toughened polyformaldehyde, the integral structure is integrally formed without splicing, and the fatigue resistance and the dimensional stability are good.
(2) The automobile door panel buckle provided by the invention adopts TPU toughened POM as a preparation material, and simultaneously, inorganic nano-powder is added to modify the strength of the TPU toughened POM, so that the automobile door panel buckle has high strength and toughness and long service life.
(3) The inorganic nano powder is further selected as nano silicon dioxide powder, the coupling agent is selected as an isocyanate silane coupling agent, the silane coupling agent has a better surface modification effect on silicon dioxide, and meanwhile, the isocyanate group further performs a crosslinking reaction with polyurethane elasticity in the high-temperature extrusion process, so that the modification strength is further ensured.
(4) The preparation method of the invention further adopts the inorganic nano powder and the coupling agent to carry out surface modification reaction firstly, and then the inorganic nano powder, polyformaldehyde granules and the polyurethane elastomer are added into an extruder to be extruded and granulated, so that the surface modification effect of the inorganic nano powder is better, and the dispersion modification effect of the inorganic nano powder in a plastic matrix is facilitated.
(5) The preparation method of the invention further adopts inorganic nano powder and coupling agent to carry out surface modification reaction, then the inorganic nano powder and polyurethane elastomer are added into an extruder to be mixed uniformly, and then polyformaldehyde granules are added to be extruded and granulated. The inorganic nano powder after surface modification can better perform cross-linking reaction with the polyurethane elastomer under the condition of high-temperature mixing, and the modification strength is obviously improved.
Drawings
FIG. 1 is a schematic structural view of an automobile door panel fastener according to an embodiment of the present invention;
fig. 2 is a physical appearance diagram of the automobile door panel buckle in the embodiment of the invention.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but the present invention is not limited thereto.
Example 1
The automobile door panel buckle of the embodiment has the structure schematic diagram and the physical appearance diagram shown in fig. 1 and fig. 2, respectively, and comprises a clamping groove part 1 and a clamping hole part 2. The clamping groove part 1 is provided with a first clamping groove 1-1 and a second clamping groove 1-2; the card hole part comprises an insertion piece 2-1 fixedly connected with the card slot part 1, a group of mutually symmetrical card connecting pieces 2-2 are arranged on two sides of the insertion piece 2-1, one end of each card connecting piece 2-2 is fixedly connected to the tail end of the upper part of the insertion piece 2-1, the other end of each card connecting piece 2-2 inclines downwards to extend and is fixedly connected with the card slot part 1, and a limiting groove 2-3 is arranged at the connecting part of each card connecting piece 2-2 and the card slot part 1. A limiting block 2-4 is arranged between the clamping sheet 2-2 and the inserting sheet 2-1, and the limiting block 2-4 is fixed on the clamping sheet 2-2.
The automobile door plate buckle is obtained by one-time injection molding of toughened polyformaldehyde, and the specific preparation steps are as follows:
(1) preparing toughened polyformaldehyde granules: adding 100 parts of Polyformaldehyde (POM) granules, 60 parts of polyurethane elastomer (TPU), 8 parts of nano silicon dioxide powder and 0.5 part of coupling agent 3-isocyanatopropyl trimethoxy silane into an extruder by mass, melting at 180-200 ℃, extruding and granulating to obtain the toughened polyformaldehyde granules.
(2) The buckle is formed by one-time injection molding: carrying out one-time injection molding on the toughened polyformaldehyde granules obtained in the step (1), wherein the molding conditions are as follows: pre-drying: 80-90 ℃ for 5 h; barrel temperature: the front section is 180-210 ℃, the middle section is 175-200 ℃, and the rear section is 170-190 ℃; temperature of the die: 80-90 ℃. And obtaining the automobile door panel buckle.
Example 2
The structure of the automobile door panel buckle of the embodiment is the same as that of the embodiment 1.
The automobile door plate buckle is obtained by one-time injection molding of toughened polyformaldehyde, and the specific preparation steps are as follows:
(1) preparing toughened polyformaldehyde granules: adding 100 parts of Polyformaldehyde (POM) granules, 40 parts of polyurethane elastomer (TPU), 5 parts of nano silicon dioxide powder and 0.2 part of coupling agent 3-isocyanatopropyl trimethoxy silane into an extruder by mass, melting at 180-200 ℃, extruding and granulating to obtain the toughened polyformaldehyde granules.
(2) The buckle is formed by one-time injection molding: carrying out one-time injection molding on the toughened polyformaldehyde granules obtained in the step (1), wherein the molding conditions are as follows: pre-drying: 80-90 ℃ for 5 h; barrel temperature: the front section is 180-210 ℃, the middle section is 175-200 ℃, and the rear section is 170-190 ℃; temperature of the die: 50-60 ℃. And obtaining the automobile door panel buckle.
Example 3
The structure of the automobile door panel buckle of the embodiment is the same as that of the embodiment 1.
The automobile door plate buckle is obtained by one-time injection molding of toughened polyformaldehyde, and the specific preparation steps are as follows:
(1) preparing toughened polyformaldehyde granules: adding 100 parts of Polyformaldehyde (POM) granules, 80 parts of polyurethane elastomer (TPU), 10 parts of nano silicon dioxide powder and 1 part of coupling agent 3-isocyanate propyl trimethoxy silane into an extruder, melting at 180-200 ℃, and extruding and granulating to obtain the toughened polyformaldehyde granules.
(2) The buckle is formed by one-time injection molding: carrying out one-time injection molding on the toughened polyformaldehyde granules obtained in the step (1), wherein the molding conditions are as follows: pre-drying: 80-90 ℃ for 5 h; barrel temperature: the front section is 180-210 ℃, the middle section is 175-200 ℃, and the rear section is 170-190 ℃; temperature of the die: 70-80 ℃. And obtaining the automobile door panel buckle.
Example 4
The structure of the automobile door panel buckle of the embodiment is the same as that of the embodiment 1.
The automobile door plate buckle is obtained by one-time injection molding of toughened polyformaldehyde, and the specific preparation steps are as follows:
(1) adding 8 parts of nano silicon dioxide powder and 0.5 part of coupling agent 3-isocyanate propyl trimethoxy silane into an isopropanol solvent, stirring and reacting under a certain humidity condition, filtering and drying to obtain surface modified nano silicon dioxide powder;
(2) adding 100 parts by weight of Polyformaldehyde (POM) granules, 60 parts by weight of polyurethane elastomer (TPU) and the surface-modified nano silicon dioxide powder obtained in the step (1) into an extruder, melting at 180-200 ℃, extruding and granulating to obtain the toughened polyformaldehyde granules.
(3) Carrying out one-time injection molding on the toughened polyformaldehyde granules obtained in the step (2), wherein the molding conditions are as follows: pre-drying: 80-90 ℃ for 5 h; barrel temperature: the front section is 180-210 ℃, the middle section is 175-200 ℃, and the rear section is 170-190 ℃; temperature of the die: 80-90 ℃. And obtaining the automobile door panel buckle.
Example 5
The structure of the automobile door panel buckle of the embodiment is the same as that of the embodiment 1.
The automobile door plate buckle is obtained by one-time injection molding of toughened polyformaldehyde, and the specific preparation steps are as follows:
(1) adding 8 parts of nano silicon dioxide powder and 0.5 part of coupling agent 3-isocyanate propyl trimethoxy silane into an isopropanol solvent, stirring and reacting under a certain humidity condition, filtering and drying to obtain surface modified nano silicon dioxide powder;
(2) adding 60 parts by weight of polyurethane elastomer (TPU) and the surface-modified nano silicon dioxide powder obtained in the step (1) into an extruder, and melting and mixing uniformly at the temperature of 170-200 ℃; then adding 100 parts of Polyformaldehyde (POM) granules, melting at 180-200 ℃, extruding and granulating to obtain the toughened polyformaldehyde granules.
(3) Carrying out one-time injection molding on the toughened polyformaldehyde granules obtained in the step (2), wherein the molding conditions are as follows: pre-drying: 80-90 ℃ for 5 h; barrel temperature: the front section is 180-210 ℃, the middle section is 175-200 ℃, and the rear section is 170-190 ℃; temperature of the die: 80-90 ℃. And obtaining the automobile door panel buckle.
Firstly, the samples obtained in the above embodiments are subjected to mechanical property tests, and the average value is obtained by three sample tests. Wherein the tensile strength test standard is ISO 527-2, and the test condition is 50 mm/min; the elongation at break test standard is ISO 527-2, and the test condition is 50 mm/min; the bending strength test standard is ISO 178, and the test condition is 2 mm/min; the flexural modulus test standard is ISO 178, and the test condition is 2 mm/min; the testing standard of the notch impact strength of the cantilever beam is ISO 180, and the testing condition is 23 ℃; the shore hardness test standard is ISO 868. The corresponding test results are shown in table 1 below.
TABLE 1
The results in table 1 show that the tensile strength and the notched izod impact strength of the material are both significantly improved by modifying polyformaldehyde with the polyurethane elastomer, which indicates that the toughness of the material is significantly improved. Meanwhile, the strength of the material is not obviously reduced by the reinforcement of the inorganic nano powder. Particularly, under the condition of adopting nano silicon dioxide powder and a cyano coupling agent, the nano silicon dioxide powder is firstly subjected to surface modification, then reacts with a polyurethane elastomer, and then the polyformaldehyde is toughened, so that the effect of simultaneously improving the toughness and the strength of the obtained material is more remarkable.
Secondly, the buckle samples obtained in the above embodiments 1-5 are subjected to buckle disassembly and assembly performance and insertion and extraction force requirement tests; detecting the environment: the temperature is 23 +/-2 ℃; humidity 50. + -. 5% RH. The detection device adopts a DS2-200N push-pull force meter. The results of the measurements are shown in Table 2 below.
TABLE 2
And thirdly, carrying out high temperature test on the buckle samples obtained in the above examples 1-5. Adopting a DHG-9245A electric heating air blast drying oven; the detection is carried out under the conditions of 90 ℃ and 168H. The results showed that no changes occurred in all sample shapes and surfaces that detracted from the performance properties.
And fourthly, carrying out low-temperature test on the snap sample obtained in the above examples 1-5. Adopting a KTHB-410TBS programmable constant temperature and humidity test chamber; the detection is carried out under the conditions of-40 ℃ and 28H. The results showed that no changes occurred in all sample shapes and surfaces that detracted from the performance properties.
And fifthly, carrying out environment cycle test on the buckle samples obtained in the embodiments 1-5. Adopting a KTHB-410TBS programmable constant temperature and humidity test chamber; the test conditions are shown in table 3 below. The results showed no cracks and damage to all sample profiles and surfaces.
TABLE 3
Sixthly, performing a water tightness test on the snap sample obtained in the above examples 1-5. The test condition is to manufacture a corresponding sheet metal jig according to the thickness and the aperture of the buckle. Under the room temperature environment, after the jig plate is fixed, a sample is installed on the jig plate, a cylindrical water container with the height larger than 50mm is installed on the jig (the container and the jig need to be sealed by adopting a sealing piece, the diameter of the container needs to be larger than the diameter of a buckle installation hole by more than 1.5 times), clear water with the height of 50mm is poured, and the state of the sample is checked after 2 hours of keeping. The results show that there was no water leakage at all fastener installations.
According to the result of the test, the buckle prepared by the invention can meet the high-standard use requirement of the current market on the automobile door plate buckle.
The above embodiments are preferred embodiments of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and all such changes, modifications, substitutions, combinations, and simplifications are intended to be included in the scope of the present invention.
Claims (10)
1. The utility model provides an automobile door panel buckle, includes draw-in groove portion and draw-in hole portion, its characterized in that: the clamping groove part and the clamping hole part are obtained by one-time injection molding of toughened polyformaldehyde.
2. The automotive door panel buckle according to claim 1, characterized in that: the clamping groove part is provided with a first clamping groove and a second clamping groove; card hole portion includes the insertion piece with draw-in groove portion fixed connection, is provided with a set of joint piece of symmetry each other in the both sides of insertion piece, and the one end fixed connection of joint piece is terminal in the top of insertion piece, and the other end downward sloping of joint piece extends and fixed connection in draw-in groove portion, the joint department of joint piece and draw-in groove portion is equipped with the spacing groove.
3. The automotive door panel buckle according to claim 2, characterized in that: a limiting block is arranged between the clamping sheet and the inserting sheet and fixed on the clamping sheet.
4. The preparation method of the automobile door panel buckle as claimed in any one of claims 1 to 3, characterized by comprising the following preparation steps:
(1) preparing toughened polyformaldehyde granules: adding the polyformaldehyde granules, the polyurethane elastomer, the inorganic nano powder and the coupling agent into an extruder for melting, extruding and granulating to obtain toughened polyformaldehyde granules;
(2) the buckle is formed by one-time injection molding: and (3) carrying out one-step injection molding on the toughened polyformaldehyde granules obtained in the step (1) to obtain the automobile door panel buckle.
5. The preparation method of the automobile door panel buckle according to claim 4, wherein the materials in the step (1) are added in the following mass parts:
polyoxymethylene pellets: 100 parts of (A);
polyurethane elastomer: 40-80 parts;
inorganic nano-powder: 5-10 parts;
coupling agent: 0.2-1 part.
6. The method for preparing the automobile door panel buckle according to claim 4, wherein the method comprises the following steps: the inorganic nano powder in the step (1) is at least one selected from nano calcium carbonate powder, nano silicon dioxide powder, nano aluminum oxide powder and nano titanium dioxide powder; the coupling agent is selected from titanate coupling agent, aluminate coupling agent or silane coupling agent.
7. The method for preparing the automobile door panel buckle according to claim 4, wherein the method comprises the following steps: the inorganic nano powder is nano silicon dioxide powder, and the coupling agent is an isocyanate silane coupling agent; the isocyanate silane coupling agent comprises 3-isocyanate propyl trimethoxy silane or 3-isocyanate propyl triethoxy silane.
8. The method for preparing the automobile door panel buckle according to claim 7, wherein the method comprises the following steps: the inorganic nano powder and the coupling agent are subjected to surface modification reaction, and then are added into an extruder with polyformaldehyde granules and a polyurethane elastomer for extrusion granulation to obtain the toughened polyformaldehyde granules.
9. The method for preparing the automobile door panel buckle according to claim 7, wherein the method comprises the following steps: the inorganic nano powder and the coupling agent are subjected to surface modification reaction firstly, then are added into an extruder together with the polyurethane elastomer to be uniformly mixed, and then are added with polyformaldehyde granules to be extruded and granulated to obtain the toughened polyformaldehyde granules.
10. The method for preparing the automobile door panel buckle according to claim 4, wherein the method comprises the following steps: the melting temperature in the step (1) is 170-210 ℃; the conditions of the one-time injection molding in the step (2) are as follows:
pre-drying: at the temperature of 80-90 ℃, 4-6 h;
barrel temperature: the front section is 180-210 ℃, the middle section is 175-200 ℃, and the rear section is 170-190 ℃;
temperature of the die: 50-90 ℃.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011091724.3A CN112373412A (en) | 2020-10-13 | 2020-10-13 | Automobile door plate buckle and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011091724.3A CN112373412A (en) | 2020-10-13 | 2020-10-13 | Automobile door plate buckle and preparation method thereof |
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|---|---|---|---|---|
| JP2005187591A (en) * | 2003-12-25 | 2005-07-14 | Oiles Ind Co Ltd | Polyacetal resin composition, sliding member and door check apparatus using the same |
| CN101768321A (en) * | 2010-01-29 | 2010-07-07 | 铁岭华晨橡塑制品有限公司 | Plastic buckle of automobile interior trim parts |
| CN102924862A (en) * | 2012-11-29 | 2013-02-13 | 开滦（集团）有限责任公司 | Polyformaldehyde modified material and preparation method thereof |
| CN204900426U (en) * | 2015-08-12 | 2015-12-23 | 东莞市祥昱实业有限公司 | Car door plant buckle |
| CN105237942A (en) * | 2015-10-12 | 2016-01-13 | 神华集团有限责任公司 | Toughening polyformaldehyde composite material and preparation method thereof |
| CN209938488U (en) * | 2019-04-28 | 2020-01-14 | 北京长城华冠汽车技术开发有限公司 | Automobile interior trim panel buckle |
-
2020
- 2020-10-13 CN CN202011091724.3A patent/CN112373412A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005187591A (en) * | 2003-12-25 | 2005-07-14 | Oiles Ind Co Ltd | Polyacetal resin composition, sliding member and door check apparatus using the same |
| CN101768321A (en) * | 2010-01-29 | 2010-07-07 | 铁岭华晨橡塑制品有限公司 | Plastic buckle of automobile interior trim parts |
| CN102924862A (en) * | 2012-11-29 | 2013-02-13 | 开滦（集团）有限责任公司 | Polyformaldehyde modified material and preparation method thereof |
| CN204900426U (en) * | 2015-08-12 | 2015-12-23 | 东莞市祥昱实业有限公司 | Car door plant buckle |
| CN105237942A (en) * | 2015-10-12 | 2016-01-13 | 神华集团有限责任公司 | Toughening polyformaldehyde composite material and preparation method thereof |
| CN209938488U (en) * | 2019-04-28 | 2020-01-14 | 北京长城华冠汽车技术开发有限公司 | Automobile interior trim panel buckle |
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