CN113415007B - Processing method of environment-friendly noise-reduction type car door waterproof membrane - Google Patents
Processing method of environment-friendly noise-reduction type car door waterproof membrane Download PDFInfo
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- CN113415007B CN113415007B CN202110759278.7A CN202110759278A CN113415007B CN 113415007 B CN113415007 B CN 113415007B CN 202110759278 A CN202110759278 A CN 202110759278A CN 113415007 B CN113415007 B CN 113415007B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D7/00—Producing flat articles, e.g. films or sheets
- B29D7/01—Films or sheets
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Abstract
The invention discloses a processing method of an environment-friendly noise-reduction type car door waterproof film, which comprises the following steps of: A. stirring: stirring the raw materials into a uniform state; B. melting: heating the stirred raw materials to 130-200 ℃ to melt the stirred raw materials into liquid materials; C. and (3) leaching: spraying the liquid on one surface of a sheet-shaped chemical crosslinking polyethylene foaming material, and scraping and coating the surface of the sheet-shaped chemical crosslinking polyethylene foaming material into a laminated layer with uniform thickness by adopting a scraper to obtain a semi-finished product; D. and (3) mould pressing: clamping the semi-finished product into a compression roller gap of a mould pressing device, and starting a compression roller to uniformly rotate and press the semi-finished product into a composite coiled material with the thickness of 2.4-3.0 mm; E. and (3) cooling: cooling the composite coiled material to room temperature and warehousing for storage for more than or equal to 7 days; F. and (3) adsorption shaping: adsorbing and shaping the composite coiled material with the stock more than or equal to 7 days; and die-cutting to obtain the car door waterproof film. The product of the invention has the functions of low odor, environmental protection and noise reduction, the odor is less than or equal to 3.5 level, the flame retardance is less than or equal to 100min, and the product meets the ROSH (heavy metal content) 2.0 standard.
Description
Technical Field
The invention relates to the field of passenger car door waterproof films, in particular to a processing method of an environment-friendly noise-reduction type car door waterproof film.
Background
The environment-friendly noise-reducing type car door waterproof film is also called a car door sealing plug. In the prior art, the waterproof film of the automobile door generally adopts flame-retardant low-odor environment-friendly XPE foam with the thickness of 2.5-3.0 mm, and is made of low-density polyethylene resin, a cross-linking agent, a foaming agent and a deodorant; the low-density polyethylene resin is prepared from ethylene by taking ethylene as a raw material, sending the raw material into a heating reactor, carrying out polymerization reaction under the action of a cross-linking agent and a foaming agent by high-pressure compression, foaming to form uniform independent air holes, and finally pressing the raw material into coiled materials with required thickness through double-layer upper and lower pressing rolls, and warehousing and storing the coiled materials; and then heating the XPE coiled material device on an adsorption machine, adsorbing and shaping according to a mold cavity, and finally die-cutting according to 2D data of the product to prepare the waterproof film of the vehicle door. The door waterproof membrane manufactured by the process can play a role in preventing water and lowering sound, but if the door waterproof membrane reaches high-temperature weather XPE, the door waterproof membrane becomes soft and deforms, so that a soft tremolo abnormal sound is generated when a loudspeaker is started, and finally passengers feel uncomfortable in hearing.
Disclosure of Invention
The invention aims to provide a processing method of an environment-friendly noise-reduction type car door waterproof film, and the car door waterproof film processed by the method is environment-friendly and noise-reduction.
The technical scheme of the invention is as follows:
the invention discloses a processing method of an environment-friendly noise-reduction type car door waterproof membrane, which is characterized by comprising the following steps of:
A. stirring: stirring the raw materials into a uniform state;
B. melting: heating the stirred raw materials to 130-200 ℃ to melt the stirred raw materials into liquid materials;
C. and (3) leaching: spraying the liquid on one surface of a flaky chemical cross-linked polyethylene foam material (XPE), and scraping and coating the flaky chemical cross-linked polyethylene foam material (XPE) into a laminated layer with uniform thickness by adopting a scraper to obtain a semi-finished product;
D. and (3) mould pressing: clamping the semi-finished product into a compression roller gap of a mould pressing device, and starting a compression roller to uniformly rotate and press the semi-finished product into a composite coiled material with the thickness of 2.4-3.0 mm;
E. and (3) cooling: cooling the composite coiled material to room temperature and warehousing for storage for more than or equal to 7 days;
F. and (3) adsorption shaping: adsorbing and shaping the composite coiled material with the stock more than or equal to 7 days; and die-cutting according to the product requirement to prepare the waterproof film of the vehicle door.
Further, the raw materials comprise the following components in percentage by mass: 92-95% of polyester A-PET raw material, 3-5% of phosphorus organic flame retardant and 2-3% of liquid rubber deodorant;
the PET raw material is a polyester A-PET slice; the flame retardant is one or more than two of organic phosphorus flame retardants, preferably styrene-butadiene phosphate flame retardants; the deodorant is a chelating low-molecular liquid rubber deodorant containing amino nitrogen.
Preferably, the gram weight of the laminated layer in the step C is 350-450 g/m 2 。
Preferably, the temperature of the adsorption shaping is 110+/-5 ℃ and the time is 5-15 min.
The invention has the following advantages:
the environment-friendly noise-reduction type car door waterproof membrane processed by the invention has the functions of low odor, environment protection and noise reduction, is harmless to human bodies and the environment, and can meet a plurality of detection standards, such as odor is less than or equal to 3.5 level, flame retardance is less than or equal to 100min, and ROSH (heavy metal content) is 2.0 detection standard.
Detailed Description
The present invention will be described in detail with reference to specific examples. The present embodiment is implemented on the premise of the technical scheme of the present invention, and a detailed implementation manner and a specific operation process are given, but the protection scope of the present invention is not limited to the following examples.
Example 1
An environment-friendly noise-reduction type car door waterproof membrane comprises the following processing method:
A. stirring: stirring the raw materials into a uniform state; the raw materials comprise the following components in percentage by mass: PET raw material (A-PET, kunshan packaging material Co., ltd., relative density 1.34-1.36, the same applies hereinafter) 92%, flame retardant (styrene-butadiene phosphate) 5%, deodorant (liquid rubber deodorant) 3%;
B. melting: heating the stirred raw materials to 150 ℃ to melt the stirred raw materials into liquid materials;
C. and (3) leaching: spraying the liquid on one surface of a flaky chemical cross-linked polyethylene foam material (XPE), and scraping and coating the flaky chemical cross-linked polyethylene foam material into a uniform coating layer with the thickness of 38 filaments by adopting a scraper to obtain a semi-finished product;
the gram weight of the laminated layer is 350g/m 2 ；
D. And (3) mould pressing: clamping the semi-finished product into a compression roller gap of a mould pressing device, and starting a compression roller to uniformly rotate and press the semi-finished product into a composite coiled material with the thickness of 2.0 mm;
E. and (3) cooling: cooling the composite coiled material to room temperature and warehousing for 7 days;
F. and (3) adsorption shaping: feeding the composite coiled material stored for 7 days into an adsorption machine for adsorption shaping (the temperature is 110 ℃ and the time is 10 min); and die-cutting according to the product requirement to prepare the waterproof film of the vehicle door.
Example 2
An environment-friendly noise-reduction type car door waterproof membrane comprises the following processing method:
A. stirring: stirring the raw materials into a uniform state; the raw materials comprise the following components in percentage by mass: 93% of PET raw material (A-PET, kunshan packaging material Co., ltd.), 4% of flame retardant (styrene-butadiene phosphate), and 3% of deodorant (liquid rubber deodorant);
B. melting: heating the stirred raw materials to 160 ℃ to melt the raw materials into liquid materials;
C. and (3) leaching: spraying the liquid on one surface of a flaky chemical cross-linked polyethylene foam material (XPE) by using a scraperDoctor blade coating to obtain a uniform coating layer with the thickness of 40 filaments to obtain a semi-finished product; the gram weight of the laminated layer is 400g/m 2 ；
D. And (3) mould pressing: clamping the semi-finished product into a compression roller gap of a mould pressing device, and starting a compression roller to uniformly rotate and press the semi-finished product into a composite coiled material with the thickness of 2.5 mm;
E. and (3) cooling: cooling the composite coiled material to room temperature and warehousing for 7 days;
F. and (3) adsorption shaping: feeding the composite coiled material which is stored for 7 days into an adsorption machine for adsorption shaping (the temperature is 115 ℃ and the time is 5 min); and die-cutting according to the product requirement to prepare the waterproof film of the vehicle door.
Example 3
An environment-friendly noise-reduction type car door waterproof membrane comprises the following processing method:
A. stirring: stirring the raw materials into a uniform state; the raw materials comprise the following components in percentage by mass: 95% of PET raw material (A-PET, kunshan packaging material Co., ltd.), 3% of flame retardant (triphenyl phosphate), and 2% of deodorant (liquid rubber deodorant);
B. melting: heating the stirred raw materials to 200 ℃ to melt the stirred raw materials into liquid materials;
C. and (3) leaching: spraying the liquid on one surface of a flaky chemical cross-linked polyethylene foam material (XPE), and scraping and coating the flaky chemical cross-linked polyethylene foam material into a uniform coating layer with the thickness of 40 filaments by adopting a scraper to obtain a semi-finished product; the gram weight of the laminated layer is 450g/m 2 ；
D. And (3) mould pressing: clamping the semi-finished product into a compression roller gap of a mould pressing device, and starting a compression roller to uniformly rotate and press the semi-finished product into a composite coiled material with the thickness of 2.5 mm;
E. and (3) cooling: cooling the composite coiled material to room temperature and warehousing for 8 days
F. And (3) adsorption shaping: feeding the composite coiled material stored for 8 days into an adsorption machine for adsorption shaping (the temperature is 105 ℃ and the time is 15 min); and die-cutting according to the product requirement to prepare the waterproof film of the vehicle door.
The air outlet pipes of the air conditioners of examples 1 to 3 were tested. Testing the tearing strength of the product according to the specification of GB/T10808-2006 standard; waterproof testing was performed as specified by 6.3.4 standard in GB 18173.1-2006; the odor was tested as specified by the Q/BYDQ-A1901.771 standard; noise reduction was tested as specified by the GB/T21361-2017 standard. The results are shown in Table 1.
Table 1 test results for examples 1 to 3
As can be seen from Table 1, the product of the invention adopts the environment-friendly XPE foam with flame retardance and low odor, and the PET substrate is sprayed on the product, so that the stiffness of the product is improved greatly compared with that of the product without spraying the PET substrate, the product can not generate soft deformation due to high-temperature weather factors to cause the abnormal sound of tremolo which is nourished when a loudspeaker is started, and meanwhile, the product can play a role of preventing water and lowering sound, and finally, the problem of unfavorable response of the hearing of passengers caused by the original design is solved.
Claims (1)
1. The processing method of the environment-friendly noise-reduction type car door waterproof membrane is characterized by comprising the following steps of:
A. stirring: stirring the raw materials into a uniform state; the raw materials comprise the following components in percentage by mass: 92-95% of polyester A-PET slice, 3-5% of phosphorus organic flame retardant and 2-3% of liquid rubber deodorant;
B. melting: heating the stirred raw materials to 130-200 ℃ to melt the stirred raw materials into liquid materials;
C. and (3) leaching: spraying the liquid material on one surface of a flaky chemical crosslinking polyethylene foaming material, and scraping and coating the flaky chemical crosslinking polyethylene foaming material into a laminated layer with uniform thickness by adopting a scraper to obtain a semi-finished product; the gram weight of the laminated layer is 350-450 g/m 2 ；
D. And (3) mould pressing: clamping the semi-finished product into a compression roller gap of a mould pressing device, and pressing the semi-finished product into a composite coiled material with the thickness of 2.4-3.0 mm;
E. and (3) cooling: cooling the composite coiled material to room temperature and warehousing for storage for more than or equal to 7 days;
F. and (3) adsorption shaping: adsorbing and shaping the composite coiled material with the stock of more than or equal to 7 days, wherein the temperature of the adsorbing and shaping is 110+/-5 ℃ and the time is 5-15 min; die cutting is carried out according to the product requirement to prepare a waterproof film of the vehicle door;
the phosphorus-based organic flame retardant is a styrene-butadiene phosphate flame retardant; the liquid rubber deodorant is a chelating low-molecular liquid rubber deodorant containing amino nitrogen.
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| CN202110759278.7A CN113415007B (en) | 2021-07-05 | 2021-07-05 | Processing method of environment-friendly noise-reduction type car door waterproof membrane |
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| CN202110759278.7A CN113415007B (en) | 2021-07-05 | 2021-07-05 | Processing method of environment-friendly noise-reduction type car door waterproof membrane |
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| CN113415007B true CN113415007B (en) | 2023-08-25 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203485852U (en) * | 2013-08-13 | 2014-03-19 | 东风裕隆汽车有限公司 | Novel waterproof film of automotive door |
| CN205291800U (en) * | 2015-11-02 | 2016-06-08 | 禾蒙国际贸易(上海)有限公司 | Cotton substrate of compound bubble |
| CN107739582A (en) * | 2017-11-08 | 2018-02-27 | 上海三恩化工有限公司 | The manufacture method of foam tape based on medium transfer |
| CN109762484A (en) * | 2018-12-29 | 2019-05-17 | 宁波大榭开发区综研化学有限公司 | A kind of thermally conductive waterproof foam tape and preparation method thereof |
| CN110845970A (en) * | 2019-11-14 | 2020-02-28 | 江苏泛亚微透科技股份有限公司 | New energy automobile door waterproof plate membrane assembly made of noise-reduction heat-insulation material and manufacturing process thereof |
-
2021
- 2021-07-05 CN CN202110759278.7A patent/CN113415007B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203485852U (en) * | 2013-08-13 | 2014-03-19 | 东风裕隆汽车有限公司 | Novel waterproof film of automotive door |
| CN205291800U (en) * | 2015-11-02 | 2016-06-08 | 禾蒙国际贸易(上海)有限公司 | Cotton substrate of compound bubble |
| CN107739582A (en) * | 2017-11-08 | 2018-02-27 | 上海三恩化工有限公司 | The manufacture method of foam tape based on medium transfer |
| CN109762484A (en) * | 2018-12-29 | 2019-05-17 | 宁波大榭开发区综研化学有限公司 | A kind of thermally conductive waterproof foam tape and preparation method thereof |
| CN110845970A (en) * | 2019-11-14 | 2020-02-28 | 江苏泛亚微透科技股份有限公司 | New energy automobile door waterproof plate membrane assembly made of noise-reduction heat-insulation material and manufacturing process thereof |
Non-Patent Citations (1)
| Title |
|---|
| 张启跃.《橡胶工业配件生产技术》.化学工业出版社,2005,第515-518页. * |
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