CN115197474A - Anti-yellowing anti-reflection heat-absorbing auxiliary, PET bottle and preparation method thereof - Google Patents

Abstract

The invention provides an anti-yellowing anti-reflection heat-absorbing auxiliary, a PET bottle and a preparation method thereof. An anti-yellowing anti-reflection heat absorption auxiliary agent comprising: carrier vegetable oil, dispersion stabilizing auxiliary agent, antioxidant performance auxiliary agent, secondary heat absorption auxiliary agent and coloring agent; 60 to 80 percent of carrier vegetable oil, 1 to 20 percent of dispersion stabilizing additive, 0.5 to 10 percent of antioxidant performance additive, 0.1 to 5 percent of heat absorbing additive and 0.1 to 5 percent of colorant. When the anti-yellowing anti-reflection heat absorption auxiliary agent is applied to products such as PET bottles, the transparency of the products such as the PET bottles can be obviously improved, and the heat absorption performance of the products such as the PET bottles can be obviously improved.

Description

Anti-yellowing and transparence-enhancing endothermic aid, PET bottle and preparation method thereof

technical field

The invention relates to the technical field of PET bottles, in particular to an anti-yellowing and permeation-enhancing endothermic aid, a PET bottle and a preparation method thereof.

Background technique

Polyester chips, also known as polyethylene terephthalate, abbreviated as PET, are crystalline saturated polyesters, which are milky white or light yellow, highly crystalline polymers, and are a common resin in life. Different application methods can be divided into virgin PET (VPET) and recycled PET (RPET).

With the global control of carbon emissions and the requirements for recycling plastics, the application ratio of recycled polyester chips or recycled PET is getting higher and higher, and the application of recycled PET in injection molding and blow molding is also becoming more and more extensive.

Although the use of recycled PET chips can effectively improve the recycling of plastic products, save energy and reduce carbon emissions, the preforms injected with recycled PET bottle chips have poor heat absorption performance and high energy consumption during bottle blowing. The blowing efficiency is low; it is especially worth noting that the product is prone to gray, foggy and yellowish color, which seriously affects the appearance of the final food or beverage package, and it is easy for consumers to doubt the quality of the food and beverage in the package. consumers' desire to buy.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a kind of anti-yellowing and transflectance-enhancing endothermic aid, a PET bottle and a preparation method thereof, which are used to solve the problems of poor transparency and poor heat-absorbing properties in plastic products of recycled PET chips in the prior art.

In order to solve the above-mentioned technical problems, in the first aspect, the present invention provides an anti-yellowing and permeation-enhancing endothermic adjuvant, comprising: carrier vegetable oil, dispersion stabilization adjuvant, antioxidant performance adjuvant, re-endothermic adjuvant and colorant; in,

The mass percentage of the carrier vegetable oil is 60% to 80%, the mass percentage of the dispersion stabilization assistant is 1% to 20%, and the mass percentage of the antioxidant performance assistant is 0.5% to 10%. The mass percentage of the re-endothermic auxiliary agent is 0.1% to 5% and the mass percentage of the colorant is 0.1% to 5%.

Optionally, the average particle size of the dispersion stabilization aid, the average particle size of the antioxidant performance aid, the average particle size of the re-endothermic aid, and the average particle size of the colorant are all less than 5 μm. .

Optionally, the carrier vegetable oil includes food-grade carrier vegetable oil; the colorant includes food-contact-grade organic dyes or food-contact-grade inorganic pigments.

Optionally, the carrier vegetable oil includes at least one of sunflower oil, olive oil and rapeseed oil; the antioxidant performance assistant includes hindered phenolic antioxidants and solid organic phosphite antioxidants At least one of; the re-endothermic aid includes at least one of carbon black, tungsten oxide, activated carbon, titanium nitride and zinc nitride; the colorant includes ultramarine blue 5008, ultramarine violet V19, phthalocyanine At least one of blue 15:3 and solvent violet 13; the dispersion stabilization assistant is hydrophobic or hydrophilic fumed silica.

In the second aspect, the present invention also provides a preparation method of an anti-yellowing and transmissive endothermic aid,

Weigh the carrier vegetable oil, antioxidant performance auxiliary, high-performance re-endothermic auxiliary and colorant according to the following parts by mass: 60-80 parts of the carrier vegetable oil, 1-20 parts of the dispersion stabilization auxiliary, the antioxidant 0.5-10 parts of performance auxiliary, 0.1-5 parts of re-endothermic auxiliary and 0.1-5 parts of colorant;

Pour the carrier vegetable oil into the stirring tank, then add the antioxidant performance assistant and the re-endothermic performance assistant into the stirring tank and stir, and then add the colorant and the colorant to the stirring tank. Disperse the stabilization assistant, and continue to stir until the anti-yellowing and transparence enhancement and endothermic assistant is obtained.

Optionally, the average particle size of the dispersion stabilization aid, the average particle size of the antioxidant performance aid, the average particle size of the re-endothermic aid, and the average particle size of the colorant are all less than 5 μm. ; and/or the time for adding the anti-oxidative performance assistant and the re-endothermic performance assistant to the stirring tank for stirring is 5 to 15 minutes.

Optionally, the carrier vegetable oil includes food-grade carrier vegetable oil; the colorant includes food-contact-grade organic dyes or food-contact-grade inorganic pigments.

Optionally, the carrier vegetable oil includes at least one of sunflower oil, olive oil and rapeseed oil; the antioxidant performance assistant includes hindered phenolic antioxidants and solid organic phosphite antioxidants At least one of; the re-endothermic aid includes at least one of carbon black, tungsten oxide, activated carbon, titanium nitride and zinc nitride; the colorant includes ultramarine blue 5008, ultramarine violet V19, phthalocyanine At least one of blue 15:3 and solvent violet 13; the dispersion stabilization assistant is hydrophobic or hydrophilic fumed silica.

In a third aspect, the present invention also provides a PET bottle, comprising: the material of the PET bottle includes: PET and the anti-yellowing, anti-reflection, anti-reflection and endothermic auxiliary agent according to the first aspect; wherein, the mass percentage of the PET is 99.85%-99.99%, and the mass percentage of the anti-yellowing and transmissive-enhancing endothermic aid is 0.01%-0.15%.

A fourth aspect, the present invention also provides a preparation method of a PET bottle, comprising:

Adopt the preparation method of anti-yellowing and enhance transparence endothermic assistant as described in the second aspect to prepare anti-yellowing and enhance transparence and endothermic assistant;

PET is provided, and the PET is mixed with the anti-yellowing and transflectance-enhancing endothermic aid in the following proportions and then beaten to obtain a sheet: the mass percentage of the PET is 99.85% to 99.99%, and the anti-yellowing, transparence-enhancing, absorbing The mass percentage of thermal aid is 0.01% to 0.15%;

injecting embryos into the sheet to obtain bottle embryos;

The preform is heated and blown to obtain the PET bottle.

As mentioned above, the anti-yellowing and transparence-enhancing endothermic adjuvant of the present invention, the PET bottle and the preparation method thereof have the following beneficial effects: Anti-oxidation performance additives and colorants, when the anti-yellowing and translucent endothermic additives are applied to PET bottles and other products, the translucent properties of PET bottles and other products can be significantly improved; by adding re-endothermic additives, the anti-yellowing and translucent additives When the endothermic additive is applied to PET bottles and other products, it can significantly improve the endothermic properties of PET bottles and other products.

Description of drawings

Fig. 1 is the schematic flow sheet of the preparation method of the anti-yellowing and transparence-enhancing endothermic aid provided in the embodiment of the present invention;

FIG. 2 is a schematic flowchart of the preparation method of the anti-yellowing and transparence-enhancing endothermic assistant provided in the second embodiment of the present invention.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

The preferred embodiments described below are given by way of example only, and other obvious modifications will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, improvements, equivalents, and other technical solutions without departing from the spirit and scope of the invention.

It should be understood by those skilled in the art that in the disclosure of the present invention, the terms "portrait", "horizontal", "upper", "lower", "front", "rear", "left", "right", " The orientation or positional relationship indicated by vertical, horizontal, top, bottom, inner, outer, etc. is based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the present invention and The description is simplified rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus the above terms should not be construed as limiting the invention.

Example 1

The present invention provides an anti-yellowing and transparence-enhancing endothermic aid, which comprises:

Carrier vegetable oils and fats, dispersion stabilization aids, antioxidant performance aids, re-endothermic aids and colorants; among them,

The mass percentage of the carrier vegetable oil is 60% to 80%, the mass percentage of the dispersion stabilization assistant is 1% to 20%, and the mass percentage of the antioxidant performance assistant is 0.5% to 10%. The mass percentage of the re-endothermic auxiliary agent is 0.1% to 5% and the mass percentage of the colorant is 0.1% to 5%.

In one example, the carrier vegetable fat may comprise a food grade carrier vegetable fat. More specifically, the carrier vegetable oil can include, but is not limited to, at least one of sunflower oil, olive oil and rapeseed oil, for example, the carrier vegetable oil can be sunflower oil or olive oil, Can also be canola oil, can also be sunflower oil and olive oil, can also be sunflower oil and canola oil, can also be olive oil and canola oil, can also be sunflower oil, olive oil and canola Oil.

Specifically, the mass percentage of the carrier vegetable oil can be 60%, 65%, 70%, 75% or 80% and so on.

Further, the dispersion stabilization aid can be any kind of dispersion stabilization aid with anti-settling and thixotropic properties, and the function of the dispersion stabilization aid is to effectively and uniformly disperse the antioxidant The thermal auxiliary agent and the coloring agent are used to ensure that the performance of the anti-yellowing and transmissive endothermic auxiliary agent is more stable.

In one example, the dispersion stabilization aid is hydrophobic or hydrophilic fumed silica, that is, the dispersion stabilization aid may be hydrophobic fumed silica or hydrophilic fumed silica Silicon oxide. Fumed silica, namely fumed silica, is one of the most important high-tech ultra-fine inorganic new materials; fumed silica has the advantages of small particle size, large specific surface area, strong surface adsorption, large surface energy and high chemical purity. and good dispersion properties.

Of course, in other examples, the dispersion stabilization assistant can also be an organic dispersant.

Specifically, the mass percentage of the dispersion stabilization assistant may be 1%, 5%, 10%, 15% or 20%, and so on.

In one example, the antioxidant performance adjuvant may include, but is not limited to, at least one of hindered phenolic antioxidants and solid organic phosphite antioxidants, that is, the antioxidant performance adjuvant may be hindered The phenolic antioxidant may also be an organic phosphite antioxidant, or a combination of hindered phenolic and phosphite antioxidants. Specifically, the antioxidant performance assistant can be a hindered phenolic antioxidant, a solid organic phosphite antioxidant, or a hindered phenolic antioxidant and a solid organic phosphite antioxidant agent.

Specifically, the mass percentage of the antioxidant aid may be 0.5%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%. 9% or 10% and so on.

In one example, the re-endothermic aid may include, but is not limited to, at least one of carbon black, tungsten oxide, activated carbon, titanium nitride and zinc nitride; that is, the re-endothermic aid may include carbon black , any one of tungsten oxide, activated carbon, titanium nitride or zinc oxide, or a combination of at least two of carbon black, tungsten oxide, activated carbon, titanium nitride and zinc nitride.

Specifically, the mass percentage of the re-endothermic aid may be 0.1%, 0.5%, 1%, 2%, 3%, 4% or 5%, and so on.

In one example, the colorant may include food contact organic dyes or food contact inorganic pigments. Specifically, the colorant includes at least one of Ultramarine Blue 5008, Ultramarine Violet V19, Phthalocyanine Blue 15:3 and Solvent Violet 13. More specifically, the colorant may include any one of Ultramarine Blue 5008, Ultramarine Violet V19, Phthalocyanine Blue 15:3 or Solvent Violet 13, and may also include Ultramarine Blue 5008, Ultramarine Violet V19, Phthalocyanine Blue 15 :3 and at least two of Solvent Violet 13.

In one example, the colorant may include at least one as shown in Table 1.

Table 1. Colorants

raw material name CI-index number Classification color FDA GB9685 Phthalocyanine Blue BS PIGMENT BLUE 15:1 Inorganic Pigments blue meets the meets the Phthalocyanine Blue BGS PIGMENT BLUE 15:3 Inorganic Pigments blue meets the meets the Phthalocyanine Blue 15:4 PIGMENT BLUE 15:4 Inorganic Pigments blue meets the meets the Transparent blue 2B Solvent Blue 104 organic dye blue meets the meets the ultramarine blue PIGMENT BLUE 29 Inorganic Pigments blue meets the meets the Transparent Purple B SOLVENT VIOLET13 organic dye Purple meets the meets the Ultramarine 12 PIGMENT VIOLET 15 Inorganic Pigments Purple meets the meets the Phthalocyanine Violet PIGMENT VIOLET 19 Inorganic Pigments Purple meets the meets the

Specifically, the mass percentage of the colorant may be 0.1%, 2%, 3%, 4% or 5%, and so on.

It should be noted that the carrier vegetable oil, the dispersion stabilization assistant, the antioxidant performance assistant, the re-endothermic assistant and the colorant all comply with FDA (Food and Drug Administration) certification and EU certification And food safety regulations such as GB9685-2016.

In an example, when the dispersion stabilization aid is a solid material, the average particle size of the dispersion stabilization aid is less than 5 μm, and specifically, the average particle size of the dispersion stabilization aid may be 4.5 μm, 4 μm, 3 μm , 2μm or 1μm and so on. When the antioxidant performance assistant is a solid material, the average particle size of the antioxidant performance assistant is less than 5 μm, and specifically, the average particle size of the antioxidant performance assistant can be 4.5 μm, 4 μm, 3 μm, 2 μm or 1μm and so on. When the re-endothermic aid is a solid material, the average particle size of the re-endothermic aid is less than 5 μm, and specifically, the average particle size of the re-endothermic aid may be 4.5 μm, 4 μm, 3 μm, 2 μm or 1μm and so on. When the colorant is a solid material, the average particle size of the colorant is less than 5 μm, and specifically, the average particle size of the colorant can be 4.5 μm, 4 μm, 3 μm, 2 μm or 1 μm and so on.

In the anti-yellowing and transparence-enhancing endothermic adjuvant of the present invention, the carrier vegetable oil is used as the carrier, and the anti-yellowing and transparence-enhancing endothermic adjuvant is applied to PET bottles and other products by adding antioxidant performance adjuvant and coloring agent, which can significantly improve the Improve the translucent performance of PET bottles and other products; by adding re-endothermic additives, the thermal stability of anti-yellowing and transparence-enhancing endothermic additives is extremely good. Improve the endothermic properties of products such as PET bottles.

The anti-yellowing, anti-reflection and endothermic adjuvant of the present invention can be used in combination with other functional additives without conflict in performance, including but not limited to light stabilizers (such as UV234, UV360, UV3638, UV380W, UV390B, etc.), Antistatic agent (cationic surfactant, anionic surfactant, etc.), deacetaldehyde agent (such as AAS-12T), oxygen inhibitor (such as USO-1001P/1002A), anti-friction agent, various organic pigments or Dyes, etc.

Referring to Fig. 1, the present invention also provides a preparation method of an anti-yellowing and transparence-enhancing endothermic auxiliary, and the preparation method of the anti-yellowing and translucent-enhancing endothermic auxiliary may include the following steps:

S11: Weigh the carrier vegetable oil, antioxidant performance assistant, high-performance re-endothermic assistant and colorant according to the following parts by mass: 60-80 parts of the carrier vegetable oil, 1-20 parts of the dispersion stabilization assistant, the 0.5-10 parts of antioxidant performance auxiliary agent, 0.1-5 parts of said re-endothermic auxiliary agent and 0.1-5 parts of said colorant;

S12: Pour the carrier vegetable oil into a stirring tank (for example, it can be a quantitative stirring tank), then add the antioxidant performance assistant and the re-endothermic performance assistant into the stirring tank and stir, and then add the The colorant and the dispersion stabilization assistant are added to the stirring tank, and the stirring is continued until the anti-yellowing and transparence enhancement and endothermic assistant is obtained.

In one example, the carrier vegetable fat may comprise a food grade carrier vegetable fat. More specifically, the carrier vegetable oil can include, but is not limited to, at least one of sunflower oil, olive oil and rapeseed oil, for example, the carrier vegetable oil can be sunflower oil or olive oil, Can also be canola oil, can also be sunflower oil and olive oil, can also be sunflower oil and canola oil, can also be olive oil and canola oil, can also be sunflower oil, olive oil and canola Oil.

The dispersion stabilization aid can be any kind of dispersion stabilization aid with anti-settling and thixotropic properties, and the function of the dispersion stabilization aid is to effectively and uniformly disperse the antioxidant performance aid and the re-endothermic aid. and the colorant to ensure that the performance of the anti-yellowing and anti-reflection endothermic adjuvant is more stable.

In one example, the dispersion stabilization aid is hydrophobic or hydrophilic fumed silica, that is, the dispersion stabilization aid may be hydrophobic fumed silica or hydrophilic fumed silica Silicon oxide. Fumed silica, namely fumed silica, is one of the most important high-tech ultra-fine inorganic new materials; fumed silica has the advantages of small particle size, large specific surface area, strong surface adsorption, large surface energy and high chemical purity. and good dispersion properties.

Of course, in other examples, the dispersion stabilization assistant can also be an organic dispersant.

In one example, the antioxidant performance adjuvant may include, but is not limited to, at least one of hindered phenolic antioxidants and solid organic phosphite antioxidants, that is, the antioxidant performance adjuvant may be hindered The phenolic antioxidant may also be an organic phosphite antioxidant, or a combination of hindered phenolic and phosphite antioxidants. Specifically, the antioxidant performance assistant can be a hindered phenolic antioxidant, a solid organic phosphite antioxidant, or a hindered phenolic antioxidant and a solid organic phosphite antioxidant agent.

In one example, the re-endothermic aid may include, but is not limited to, at least one of carbon black, tungsten oxide, activated carbon, titanium nitride and zinc nitride; that is, the re-endothermic aid may include carbon black , any one of tungsten oxide, activated carbon, titanium nitride or zinc oxide, or a combination of at least two of carbon black, tungsten oxide, activated carbon, titanium nitride and zinc nitride.

In one example, the colorant may include food contact organic dyes or food contact inorganic pigments. Specifically, the colorant includes at least one of Ultramarine Blue 5008, Ultramarine Violet V19, Phthalocyanine Blue 15:3 and Solvent Violet 13. More specifically, the colorant may include any one of Ultramarine Blue 5008, Ultramarine Violet V19, Phthalocyanine Blue 15:3 or Solvent Violet 13, and may also include Ultramarine Blue 5008, Ultramarine Violet V19, Phthalocyanine Blue 15 :3 and at least two of Solvent Violet 13.

It should be noted that the carrier vegetable oil, the dispersion stabilization assistant, the antioxidant performance assistant, the re-endothermic assistant and the colorant all comply with FDA (Food and Drug Administration) certification and EU certification And food safety regulations such as GB9685-2016.

In one example, if there are solid components such as the dispersion stabilization aid, the antioxidant performance aid, the re-endothermic aid, and the colorant, if the particle size does not meet the standard requirement value (that is, the average When the particle size is less than 5 μm), that is, the solid components in the dispersion stabilization aid, the antioxidant performance aid, the re-endothermic aid and the colorant have a particle size greater than or equal to 5 μm. In the case of , between step S11 and step S12, it also includes:

The components whose particle diameters do not meet the standard requirements are ground to obtain particle diameters that reach the specified sieving value (for example, the average particle diameter of the ground raw materials is less than 5 μm). Specifically, the components that need to be ground can be ground using, but not limited to, a high-speed grinder.

It should be noted that when there are many of the dispersion stabilization assistant, the antioxidant performance assistant, the re-endothermic assistant, and the colorant that need to be ground, each component needs to be ground separately.

In an example, the time for adding the anti-oxidative performance adjuvant and the re-endothermic performance adjuvant to the stirring tank for stirring is 5-15 minutes. Specifically, the time for adding the anti-oxidative performance adjuvant and the re-endothermic performance adjuvant to the stirred tank for stirring may be 5 minutes, 10 minutes, or 15 minutes, and the like.

In one example, step S12 may specifically include: pouring the weighed carrier vegetable oil into the stirred tank; then adding the antioxidant performance assistant and the re-endothermic performance assistant into the stirred tank During the stirring process, stirring for 5 to 15 minutes (during the stirring process, the stirring rate can be slowly increased; then add the colorant and the dispersion stabilization aid to the stirring tank, and continue stirring until the anti-yellowing, transmissive, and endothermic aid is obtained. agent.

In the anti-yellowing and transparence-enhancing endothermic adjuvant prepared by the method for preparing the anti-yellowing and transmissive endothermic adjuvant of the present invention, the mass percentage of the carrier vegetable oil is 60% to 80%, and the mass percentage of the dispersion stabilization adjuvant is 60% to 80%. 1% to 20%, the mass percentage of the antioxidant performance assistant is 0.5% to 10%, the mass percentage of the re-endothermic assistant is 0.1% to 5%, and the mass percentage of the colorant is 0.1% % to 5%.

Specifically, the mass percentage of the carrier vegetable oil can be 60%, 65%, 70%, 75% or 80% and so on. The mass percentage of the dispersion stabilization assistant can be 1%, 5%, 10%, 15% or 20% and so on. The mass percentage of the antioxidant aid can be 0.5%, 1%, 2%, 3%, 4%, 5%, 6%, 7%, 8%. 9% or 10% and so on. The mass percentage of the re-endothermic aid can be 0.1%, 0.5%, 1%, 2%, 3%, 4% or 5% and so on. The mass percentage of the colorant can be 0.1%, 2%, 3%, 4% or 5% and so on.

Embodiment 2

The present invention also provides a PET bottle, the material of the PET bottle includes: PET (Polyethyleneterephthalate, polyethylene terephthalate) and the anti-yellowing, transmissive, and endothermic auxiliary as described in Embodiment 1; wherein, The mass percentage of the PET is 99.85% to 99.99%, and the mass percentage of the anti-yellowing, transmissive, and endothermic aid is 0.01% to 0.15%.

As an example, the mass percentage of the PET may be 99.85%, 99.90%, 99.95%, or 99.99%, and so on. The mass percentage of the anti-yellowing and anti-reflection endothermic adjuvant may be 0.01%, 0.05%, 0.1% or 0.15% and so on.

Please refer to Fig. 2, the present invention also provides a kind of preparation method of PET bottle, the preparation method of described PET bottle comprises:

S21: adopt the preparation method of the anti-yellowing and transparence-enhancing endothermic auxiliary agent as described in Example 1 to prepare the anti-yellowing and transparence-enhancing endothermic auxiliary agent;

S22: Provide PET, mix the PET and the anti-yellowing and transparence-enhancing endothermic adjuvant in the following proportions, and then beat the plate to obtain a sheet: the mass percentage of the PET is 99.85% to 99.99%, and the anti-yellowing enhancer The mass percentage of the diathermy aid is 0.01% to 0.15%;

S23: inject embryos into the sheet to obtain bottle embryos;

S24: heating and blowing the preform to obtain the PET bottle.

Specifically, in step S22, the mass percentage of the PET may be 99.85%, 99.90%, 99.95%, or 99.99%, and so on. The mass percentage of the anti-yellowing and anti-reflection endothermic adjuvant may be 0.01%, 0.05%, 0.1% or 0.15% and so on.

It should be noted that the anti-yellowing and transflectance-enhancing endothermic aid prepared in step S21 may be a slurry.

In an example, in step S22, about 100 grams of the slurry of the anti-yellowing and anti-reflection endothermic auxiliary agent in step S21 is taken, and the specific gravity and viscosity (such as , you can use the DV series viscometer in BROOKFIELD Brookfield to measure the viscosity); provide the recovered dried PET, mix the PET with the slurry of the anti-yellowing, anti-reflection, and endothermic adjuvant and beat the plate to obtain the obtained said board.

It should be noted that, in step S22, after the sheet is obtained, the colorant and the regrind in the anti-yellowing, anti-reflection, and heat-absorbing adjuvant can be adjusted according to the difference in appearance and permeability of the sheet. The addition ratio of the endothermic auxiliary agent, and repeat step S22, until the best addition ratio of the anti-yellowing and anti-transparency endothermic auxiliary agent and the best sheet is obtained, and the appearance of the sheet at this time is compared with that of the original sheet. The sheet added with the anti-yellowing and anti-reflection endothermic adjuvant has obviously improved or close to pure PET sheet appearance.

In step S24, during the process of heating and blowing the preform, observe and record the heating temperature and process changes of the heating furnace. The PET bottle of the present invention can reduce the heating temperature by 10% to 20% by adding the anti-yellowing and anti-reflection heating aid.

After the PET bottle is obtained, the PET bottle needs to be inspected. After passing the inspection indicators, a small sample of 100 grams of the corresponding PET bottle is reserved for label remarks; the obtained PET can be labeled and classified according to customer needs. Pack.

Since the PET bottle of the present invention adopts the anti-yellowing and anti-reflection endothermic adjuvant as described in Example 1, because the anti-yellowing and anti-reflection endothermic adjuvant contains antioxidant performance adjuvant, the dispersion is stable The auxiliary agent and the colorant can improve the dark appearance of the PET bottle and improve the transparency of the product. In addition, the anti-yellowing and transparence-enhancing endothermic aid contains the re-endothermic aid, which can effectively improve the endothermic efficiency, and the endothermic efficiency can be increased by 10% to 20%; The thermal stability of the agent is extremely excellent, which not only provides a good endothermic effect during the blowing process, but also continues to provide the endothermic effect during the processing of the recovered chips obtained by secondary or multiple recycling, crushing and granulation. ; And it is precisely because of the excellent thermal stability of the anti-yellowing and anti-yellowing endothermic additives, the PET bottles containing the anti-yellowing and anti-transmitting endothermic additives are compared with those without , the product and appearance are more bluish, more bright, clean and transparent. The anti-yellowing and transparence-enhancing endothermic aid of the present invention can be used in two-in-one or multi-in-one with other color oils or liquid additives, which can reduce the addition cost, and make the preparation process of the PET bottle more simplified and easier to control.

Further, the appearance of the PET bottle added with the anti-yellowing and transparence-enhancing endothermic aid of the present invention has been significantly improved, both the yellow phase and the gray phase have been greatly optimized, and the overall appearance looks brighter and clearer. , which greatly improves the appearance of the product.

The comparative data of the transmittance test of the PET bottle comprising 0.08% (mass percentage) of the anti-yellowing and anti-reflection endothermic adjuvant of the present invention and the 100% recycled PET bottle without adding the anti-yellowing and anti-reflection endothermic adjuvant are as follows: shown in Tables 2 and 3.

Table 2. The chromaticity index detection results of the PET bottle added with 0.08% of the anti-yellowing and anti-reflection endothermic aid of the present invention and the 100% recycled PET bottle without the added anti-yellowing and anti-reflection endothermic aid.

In Table 2, the standard sample is a 100% recycled PET bottle without adding the anti-yellowing and transparence-enhancing endothermic additive; the sample is a PET bottle added with 0.08% of the anti-yellowing and transparence-enhancing endothermic additive in the present invention. D65 light source (Artificial Daylight 6500K) is the most commonly used artificial sunlight in the standard light source, and its color temperature is 6500K; the D65 light source in the standard light source box is to simulate artificial sunlight, which ensures that when observing the color effect of objects indoors and rainy days, there is an approximate Lighting effects observed under sunlight. The meaning of 10° or 2° is as follows: when a person looks at an object, the upper and lower edges of the object are connected to the human eye, which will form an included angle, which is called the angle of view. The 10° standard observer is to simulate the near view of the object. Or the color perception when looking at large objects; the 2° standard observer simulates the color perception when looking at objects at a distance or when looking at small objects. Depending on the viewing angle, the observed color will also have a certain difference. A light source is 2856K color temperature, tungsten light source, white with yellow, home, window lighting, mainly used in conjunction with other light sources to identify whether the product has metamerism. ; F2 light source, also known as CWF (Cool WhiteFluorescent) light source or cool white light source, color temperature 4150K, commonly used light source in American shops or offices. D65/10° means the D65 light source irradiates the standard and the sample at 10°; A/2° means the A light source illuminates the standard and the sample at 2°; F2/2° The standard and the sample were illuminated at 2° for the F2 light source. L* is the brightness, a* is the red-green value, and b* is the yellow-blue value.

Table 3. The color difference detection results of the PET bottle added with 0.08% anti-yellowing and anti-reflection endothermic aid of the present invention and the 100% recycled PET bottle without the added anti-yellowing and anti-reflection endothermic aid.

Test Conditions ΔL* Δa* Δb* ΔE*ab color bias D65/10° 0.73 -0.09 -0.65 0.98 bright, bluish A/2° 0.66 -0.20 -0.72 1.00 bright, bluish F2/2° 0.67 -0.01 -0.76 1.01 bright, bluish

In Table 3, D65/10° means that the D65 light source irradiates the standard sample and the sample at 10°; A/2° means that the A light source irradiates the standard sample and the sample at 2°; F2/2° is that the F2 light source illuminates the standard and the sample at 2°. ΔL* is the luminance deviation, Δa* is the red-green value deviation, Δb* is the yellow-blue value deviation, and ΔE*ab is the color difference.

From the test data in Tables 2 and 3, it can be seen that the PET bottle blown from the preform added with the anti-yellowing and transparence-enhancing endothermic additive is more translucent than the PET bottle made of recycled PET material, which effectively improves the The aesthetics of the product.

Table 4 shows the comparison data of the endothermic properties of the preform including the anti-yellowing and transflectance-enhancing endothermic adjuvant of the present invention and the 100% recycled PET bottle without the anti-yellowing and transflective-enhancing endothermic adjuvant.

Table 4. The endothermic properties of the preform of the present invention including the anti-yellowing and anti-reflection endothermic adjuvant and the preform of 100% recycled PET without the addition of the anti-yellowing and anti-reflection endothermic adjuvant.

It can be seen from Table 4 that the preforms with the anti-yellowing and transparence-enhancing endothermic additives added, compared with the recycled PET preforms without the anti-yellowing and transparence-enhancing endothermic additives, have significantly improved endothermic performance, effectively reducing the Bottle blowing consumes energy and reduces carbon emissions.

It will be apparent to those skilled in the art that the present invention is not limited to the details of the above-described exemplary embodiments, but that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments are to be regarded in all respects as illustrative and not restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, which are therefore intended to fall within the scope of the appended claims. All changes within the meaning and range of the equivalents of , are included in the present invention. Any reference signs in the claims shall not be construed as limiting the involved claim.

In addition, it should be understood that although this specification is described in terms of embodiments, not each embodiment only includes an independent technical solution, and this description in the specification is only for the sake of clarity, and those skilled in the art should take the specification as a whole , the technical solutions in each embodiment can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims (10)

1. an anti-yellowing and translucent-enhancing endothermic aid, is characterized in that, comprises: carrier vegetable oil, dispersion stabilization aid, antioxidant performance aid, again endothermic aid and colorant; Wherein, The mass percentage of the carrier vegetable oil is 60% to 80%, the mass percentage of the dispersion stabilization assistant is 1% to 20%, and the mass percentage of the antioxidant performance assistant is 0.5% to 10%. The mass percentage of the re-endothermic auxiliary agent is 0.1% to 5% and the mass percentage of the colorant is 0.1% to 5%. 2. The anti-yellowing and anti-reflection endothermic aid according to claim 1, wherein the average particle size of the dispersion stabilization aid, the average particle size of the antioxidant performance aid, the re-endothermic The average particle size of the auxiliary agent and the average particle size of the colorant are both less than 5 μm. 3. The anti-yellowing and permeation-enhancing endothermic aid according to claim 1 or 2, wherein the carrier vegetable oil comprises food-grade carrier vegetable oil; the colorant comprises food-contact-grade organic dyes or food-contact-grade organic dyes Inorganic Pigments. 4. The anti-yellowing and permeation-enhancing endothermic adjuvant according to claim 3, wherein the carrier vegetable oil comprises at least one of sunflower oil, olive oil and rapeseed oil; The agent includes at least one of hindered phenolic antioxidant and solid organic phosphite antioxidant; the re-endothermic aid includes at least one of carbon black, tungsten oxide, activated carbon, titanium nitride and zinc nitride One; the colorant includes at least one of ultramarine blue 5008, ultramarine violet V19, phthalocyanine blue 15:3 and solvent violet 13; the dispersion stabilization aid is hydrophobic or hydrophilic fumed silica . 5. a preparation method of anti-yellowing and transmissive endothermic auxiliary agent, is characterized in that, comprises: Weigh the carrier vegetable oil, antioxidant performance auxiliary, high-performance re-endothermic auxiliary and colorant according to the following parts by mass: 60-80 parts of the carrier vegetable oil, 1-20 parts of the dispersion stabilization auxiliary, the antioxidant 0.5-10 parts of performance auxiliary, 0.1-5 parts of re-endothermic auxiliary and 0.1-5 parts of colorant; Pour the carrier vegetable oil into the stirring tank, then add the antioxidant performance assistant and the re-endothermic performance assistant into the stirring tank and stir, and then add the colorant and the colorant to the stirring tank. Disperse the stabilization assistant, and continue to stir until the anti-yellowing and transparence enhancement and endothermic assistant is obtained. 6. The preparation method of the anti-yellowing and anti-reflection endothermic aid according to claim 5, wherein the average particle size of the dispersion stabilization aid, the average particle size of the antioxidant performance aid, the The average particle size of the re-endothermic auxiliary agent and the average particle size of the colorant are both less than 5 μm; and/or the time for adding the anti-oxidative performance auxiliary agent and the re-endothermic performance auxiliary agent to the stirring tank for stirring 5 to 15 minutes. 7. The preparation method of the anti-yellowing and permeation-enhancing endothermic aid according to claim 5 or 6, wherein the carrier vegetable oil comprises food-grade carrier vegetable oil; the colorant comprises a food-contact-grade organic dye or Food contact grade inorganic pigments. 8. The preparation method of the anti-yellowing and permeation-enhancing endothermic aid according to claim 7, wherein the carrier vegetable oil comprises at least one of sunflower oil, olive oil and rapeseed oil; Oxidation performance assistants include at least one of hindered phenolic antioxidants and solid organic phosphite antioxidants; the re-endothermic assistants include carbon black, tungsten oxide, activated carbon, titanium nitride and zinc nitride At least one of; the colorant includes at least one of ultramarine blue 5008, ultramarine violet V19, phthalocyanine blue 15:3 and solvent violet 13; the dispersion stabilization aid is a hydrophobic or hydrophilic gas phase Silica. 9. A PET bottle, characterized in that, the material of the PET bottle comprises: PET and the anti-yellowing, transflective, anti-yellowing and endothermic adjuvant according to any one of claims 1 to 4; wherein, the quality of the PET The percentage is 99.85%-99.99%, and the mass percentage of the anti-yellowing and transmissive endothermic auxiliary agent is 0.01%-0.15%. 10. a preparation method of PET bottle, is characterized in that, comprising: Adopt the preparation method of anti-yellowing and transparence-enhancing endothermic adjuvant as claimed in any one of claims 5 to 8 to prepare anti-yellowing and transflective-enhancing endothermic adjuvant; PET is provided, and the PET is mixed with the anti-yellowing and transflectance-enhancing endothermic aid in the following proportions and then beaten to obtain a sheet: the mass percentage of the PET is 99.85% to 99.99%, and the anti-yellowing, transparence-enhancing, absorbing The mass percentage of thermal aid is 0.01% to 0.15%; injecting embryos into the sheet to obtain bottle embryos; The preform is heated and blown to obtain the PET bottle.

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