Preparation method of PVC (polyvinyl chloride) single leather capable of releasing marine aroma and application of PVC single leather in automotive trim

Abstract

The invention discloses a preparation method of PVC (polyvinyl chloride) single leather capable of releasing marine aroma, which comprises the following steps: preparing a PVC paste material which comprises a first component consisting of PVC, a second component consisting of a plasticizer and a stabilizer and a third component consisting of a filler, a processing aid and a functional aid, the three components are uniformly mixed in a stirring manner to form the PVC paste; the preparation method comprises the following steps: curing spices, adding the spices into microcapsules, adding the microcapsules in a PVC paste preparation process, uniformly mixing in a stirring manner, and standing for 3-6 hours in a sealed manner for use; and then the PVC single leather with the marine aroma is produced through a coating process. The invention provides a simple and efficient process mode for preparing the marine aroma type PVC single leather, special equipment is not needed for production, additional auxiliaries are not needed, the marine aroma type PVC single leather can be applied to automotive interiors, pungent smell of traditional PVC single leather products is effectively shielded, and the acceptance of customers is high.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of air quality management, and particularly relates to a preparation method of a marine-scented PVC single leather capable of releasing marine scent and application of the marine-scented PVC single leather to automobile interiors. BACKGROUND

[0002] At present, in the traditional production and manufacturing process of the PVC single leather for automobiles, a plurality of chemical substances are used, such as phthalate plasticizers, calcium-zinc stabilizers, blowing agents and the like, which can produce physical or chemical changes in the high-temperature processing process, thus producing a plurality of unpleasant irritating odors, such as oil taste, amine taste, ink odor, dust odor and the like, resulting in complaints of users in the use process due to the odor problems. There are two existing odor improvement schemes: (1) The odor of the manufacturing raw materials is reduced or the baking process is increased to reduce the surface solvent residue, so as to reduce the irritating odor of the PVC single leather, but this scheme needs special process and equipment, increases the additional cost of the product, and the effect is very small.

[0003] (2) An additive and a perfume are mixed to adjust the raw material formula to prepare a single leather with a scent to cover up the irritating odor of the leather, but this method introduces new chemical additives, and the PVC single leather often has residual irritating odor, and this scheme also increases the manufacturing cost.

[0004] The above two methods have obvious defects, and therefore a product with high cost performance and high feasibility needs to be developed to solve the above problems. SUMMARY

[0005] In view of the above problems, the application provides a preparation method of a marine-scented PVC single leather capable of releasing marine scent and application of the marine-scented PVC single leather to automobile interiors, which can prepare a marine-scented PVC single leather capable of effectively covering up the irritating odor of the traditional PVC single leather product.

[0006] To solve the above technical problems, a first technical scheme of the application is to provide a preparation method of a marine-scented PVC single leather capable of releasing marine scent, comprising the following steps: (1) preparing a PVC paste, wherein the PVC paste comprises a first component composed of PVC, a second component composed of a plasticizer and a stabilizer, and a third component composed of a filler, a processing aid and a functional aid, and the three components are uniformly mixed into the PVC paste by stirring; (2) solidifying a perfume and adding the perfume into a microcapsule, and then adding the microcapsule in the preparation process of the PVC paste, and then uniformly mixing by stirring, and then using after being closed and standing for 3-6 hours; (3) The mixed PVC paste is coated on the release paper by the release paper bearing mode, and the PVC single leather with the marine fragrance type is prepared by heating the PVC paste to gelatinize the film.

[0007] In a preferred embodiment of the present application, in step (1), the adding proportion of the first component is 30%-50%, the adding proportion of the second component is 30%-40%, and the adding proportion of the third component is 10%-20%.

[0008] In a preferred embodiment of the present application, in step (2), the fragrance is natural fragrance type plant essential oil, and the adding proportion is 0.1%-0.2%.

[0009] In a preferred embodiment of the present application, in steps (1) and (2), the stirring rate is 1000-3000 revolutions / min, and the stirring time is 10-30 min.

[0010] In a preferred embodiment of the present application, in step (3), the heating temperature of the PVC paste is 140-210 DEG C, and the heating time is 2-4 min.

[0011] To solve the above technical problems, the second technical scheme of the present application is to provide the application of the releasable marine fragrance type PVC single leather prepared by the preparation method of the releasable marine fragrance type PVC single leather according to any one of the above.

[0012] In a preferred embodiment of the present application, the releasable marine fragrance type PVC single leather is arranged at a position close to a headrest of a car seat.

[0013] The present application provides a new process for preparing PVC single leather with fragrance: taking marine fragrance type PVC single leather as an example, natural fragrance type plant essential oil is used, the plant essential oil is implanted into microcapsules, the microcapsules are mixed with PVC paste to obtain PVC paste with fragrance, and then a coating process is used to produce marine fragrance type PVC single leather.

[0014] The beneficial effects of the present application are: the present application prepares marine fragrance type PVC single leather through a simple and efficient process, compared with the existing odor improvement methods, no special equipment is needed for production, and no additional additives are needed, avoiding the problems of material degradation caused by repeated deodorization and harmful substance volatilization caused by adding additives. The process is simple and efficient, the product has high stability, and the yield of batch production is high; the marine fragrance type emits soft and fresh fragrance, which can effectively mask the irritating odor of traditional PVC single leather products, and the customer acceptance is high. The present application uses microcapsules to protect the perfume, so that it is not easy to volatilize, and prevent the oxidation and pollution of the perfume. The present application can be applied to the headrest position of the car seat, through the action of external force extrusion, friction, etc., so that the microcapsules are damaged, and the fragrance is diffused into the car interior. The present application also has the characteristics of long-lasting fragrance time: under natural diffusion conditions, the fragrance can last for 6-12 months.

[0015] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application can be realized and obtained by the structure indicated in the specification, claims and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.

[0017] Figure 1 A flow chart of a preparation method of a releasable marine fragrance type PVC single leather according to an embodiment of the present application is shown; Figure 2 A schematic diagram showing the principle of the microcapsule releasing fragrance is shown; Figure 3 A schematic diagram showing the application position of the releasable marine fragrance type PVC single leather in the car interior is shown. DETAILED DESCRIPTION

[0018] In order to make the objects, technical solutions and advantages of the embodiments of the present application more clear, the following will combine the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0019] Please refer to Figure 1Embodiments of the present application include: A method for preparing a releasable marine-scented PVC single leather, comprising the following steps: (1) preparing a PVC paste, the PVC paste comprising a first component (30%-50%) consisting of PVC, a second component (30%-40%) consisting of plasticizers and stabilizers, and a third component (10%-20%) consisting of fillers, processing aids, and functional aids, and uniformly mixing the three components by stirring to form the PVC paste; (2) solidifying and adding natural-scented plant essential oil (0.1%-0.2%) to microcapsules, and then adding the microcapsules to the PVC paste during the preparation process, and uniformly mixing by stirring to form a scented PVC paste, the stirring rate being 1000-3000 revolutions per minute and the stirring time being 10-30 minutes; during this stage, after all the materials are uniformly mixed, the PVC paste needs to be sealed for 3-6 hours to ensure that the microcapsules with natural-scented plant essential oil are uniformly released in the PVC paste; (3) coating: coating the mixed PVC paste on release paper by release paper bearing, and forming a scented PVC single leather semi-finished product through high-temperature plasticization, pasting, and foaming processes, the heating temperature of the PVC paste being 140-210°C and the heating time being 2-4 minutes; (4) processing and embossing: producing a marine-scented PVC single leather through surface treatment and embossing processes of the leather semi-finished product.

[0020] The prepared marine-scented PVC single leather can be placed near the headrest of a car seat, as shown by the yellow part in Figure 3 According to the above-mentioned PVC single leather odor release mechanism (as shown in Figure 2 ), the user only needs to slightly lean against the seat and apply slight force to the headrest with the head during driving, so that the PVC single leather releases the smell of the ocean, relaxes the user's body and mind, and improves the driving pleasure of the passenger.

[0021] Since the concentration of the perfume has a great influence on the odor, if the amount of perfume added is insufficient, the scent will be released too quickly during the high-temperature production of the PVC single leather, and the finished product will have no scent or a very weak scent, which cannot cover up the irritating odor of the PVC single leather; if the proportion of the perfume added is too high, the scent of the PVC single leather will be too strong, increasing the irritation, and even affecting the remaining release performance. Therefore, the present application specifies that the proportion of plant essential oil perfume added is 0.1%-0.2%, and the product is tested for release and VOC related tests according to Q / SQRE1-6 and Q / SQRS1-160, respectively, and the test results are as follows: Release test results of plant essential oil perfume with a proportion of 0.1%:

[0022] The results of the VOC test of the plant essential oil fragrance at a ratio of 0.1%:

[0023] The results of the emission test of the plant essential oil fragrance at a ratio of 0.2%:

[0024] The results of the VOC test of the plant essential oil fragrance at a ratio of 0.2%:

[0025] It can be proved from the above experimental results that the plant essential oil fragrance at a ratio of 0.1% to 0.2% can effectively mask the irritating odor, while not affecting the emission performance and VOC performance of the PVC single leather.

[0026] Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for preparing PVC single-layer leather that can release a marine fragrance, characterized in that, Includes the following steps: (1) Prepare PVC paste, wherein the PVC paste comprises a first component composed of PVC, a second component composed of plasticizer and stabilizer and a third component composed of filler, processing aid and functional aid, and the three components are uniformly mixed by stirring to form the PVC paste; (2) The fragrance is solidified and added to the microcapsules, and then the microcapsules are added during the preparation of PVC paste. After being mixed evenly by stirring, the mixture is sealed and left to stand for 3-6 hours before use. (3) By using release paper as a carrier, the mixed PVC paste is coated onto release paper and then heated to gel into a film to produce PVC single leather with a marine fragrance.

2. The method for preparing marine-scented PVC single leather according to claim 1, characterized in that, In step (1), the addition ratio of the first component is 30%~50%, the addition ratio of the second component is 30%~40%, and the addition ratio of the third component is 10%~20%.

3. The method for preparing marine-scented PVC single-layer leather according to claim 1, characterized in that, In step (2), the fragrance is a natural-scented plant essential oil, and the addition ratio is 0.1%~0.2%.

4. The method for preparing marine-scented PVC single-layer leather according to claim 1, characterized in that, In steps (1) and (2), the stirring rate is 1000~3000 rpm and the stirring time is 10~30 min.

5. The method for preparing marine-scented PVC single-layer leather according to claim 1, characterized in that, In step (3), the heating temperature of the PVC paste is 140~210℃ and the heating time is 2~4min.

6. The application of a marine-scented PVC single-layer leather prepared by the method described in any one of claims 1 to 5 in automotive interiors.

7. The application according to claim 6, characterized in that, The marine-scented PVC single leather is installed in the car seat near the headrest.

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