CN113637249A - Plastic bubble film with good sound and heat insulation effects - Google Patents

Plastic bubble film with good sound and heat insulation effects Download PDF

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CN113637249A
CN113637249A CN202110812105.7A CN202110812105A CN113637249A CN 113637249 A CN113637249 A CN 113637249A CN 202110812105 A CN202110812105 A CN 202110812105A CN 113637249 A CN113637249 A CN 113637249A
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density polyethylene
aluminum
silicon
film
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胡颖妮
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Lengshuijiang Three A New Material Technology Co ltd
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Lengshuijiang Three A New Material Technology Co ltd
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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
    • C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
    • C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
    • C08L23/04—Homopolymers or copolymers of ethene
    • C08L23/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2323/04—Homopolymers or copolymers of ethene
    • C08J2323/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/06—Polyethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2423/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2423/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • C08J2423/04—Homopolymers or copolymers of ethene
    • C08J2423/08—Copolymers of ethene
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/30—Sulfur-, selenium- or tellurium-containing compounds
    • C08K2003/3045—Sulfates
    • C08K2003/3081—Aluminum sulfate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure

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Abstract

The invention discloses a plastic bubble film with good sound and heat insulation effects, which comprises the following components in parts by weight: 30-50 parts of low-density polyethylene; 15-25 parts of high-density polyethylene; 20-30 parts of linear low-density polyethylene; 3-8 parts of a silicon-aluminum film opening agent; 1-8 parts of a polymer blend; 0.1-1 part of polyethylene wax. The smoothness and transparency of the surfaces of the formed bottom layer film and the formed plastic film can be improved by mixing the materials of low-density polyethylene, high-density polyethylene, linear low-density polyethylene and the like; and then, by utilizing the good dispersibility of the silicon-aluminum film opening agent in the film resin and with the assistance of the polymer blend and the polyethylene wax, the bubble film has better wear resistance and tensile strength due to the fact that the silicon-aluminum film opening agent contains silicon, aluminum and other species, and the polymer blend is composed of atactic polypropylene and ethylene propylene diene monomer, so that the bubble film has higher heat resistance and impact resistance.

Description

Plastic bubble film with good sound and heat insulation effects
Technical Field
The invention relates to the technical field of packaging materials, in particular to a plastic bubble film with good sound and heat insulation effects.
Background
The bubble film is also called air cushion film and air bead film, and is one kind of packing material for packing and packing to prevent pressing, damp and shock. Because the air cushion film intermediate layer is full of air, so light, transparent, rich in elasticity, have sound insulation, thermal-insulated, shockproof, abrasionproof performance, widely used in electronics, instruments, pottery, handicraft, domestic appliance, bicycle, kitchen, furniture, lacquer goods products, glassware and precision instruments etc. shock resistance cushioning packaging.
The existing bubble film product is obtained by taking high-pressure polyethylene as a main raw material, adding auxiliary materials such as a whitening agent, an opening agent and the like, performing high-temperature melting extrusion to form a polyethylene film, and performing plastic suction on the two layers of attached polyethylene films to form bubbles. Wherein, the purpose of adding the opening agent is to enable the two layers of polyethylene films to be blister to form bubble areas to be separated smoothly.
The initial opening agent is talcum powder, diatomite, etc., and the intermediate stage is developed into oleamide, erucamide EBS derivative, etc. The auxiliary agents have defects in different degrees, and are mainly reflected in poor dispersibility of opening agents such as talcum powder, diatomite and the like; the opening agents such as oleamide and erucamide EBS derivatives are easy to be precipitated on the surface of the film, and influence the printing property and the color of the film.
The current opening agent has been developed into porous silicon-based oxide, the main component of which is silicon dioxide particles, which are dispersed in polyethylene film, form many fine and hard protrusions on the surface of the polyethylene film, reduce the contact area between the polyethylene films, so as to reduce the friction between the polyethylene films, and facilitate the separation of the polyethylene films, and the defects are that the binding force between the silicon dioxide particles and the polyethylene is poor, the silicon dioxide particles are not easily dispersed, and further the opening performance is affected, and the silicon dioxide particles on the surface of the polyethylene film are easily dropped, so that the strength of the bubble film is greatly reduced.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides the sound-insulation and heat-insulation plastic bubble film, wherein the opening agent can be uniformly dispersed in polyethylene resin, so that the strength of the bubble film is improved, and the sound-insulation and heat-insulation effects of the bubble film are further improved.
The invention is realized by adopting the following technical scheme:
a plastic bubble film with good sound and heat insulation effects comprises the following components in parts by weight:
30-50 parts of low-density polyethylene;
15-25 parts of high-density polyethylene;
20-30 parts of linear low-density polyethylene;
3-8 parts of a silicon-aluminum film opening agent;
1-8 parts of a polymer blend;
0.1-1 part of polyethylene wax.
Further, the plastic bubble film with good sound and heat insulation effects comprises the following components in parts by weight:
40-50 parts of low-density polyethylene;
15-20 parts of high-density polyethylene;
20-30 parts of linear low-density polyethylene;
3-8 parts of a silicon-aluminum film opening agent;
1-3 parts of a polymer blend;
0.1-1 part of polyethylene wax.
Further, the silicon-aluminum film opening agent is prepared by the following steps:
s1: preparing a water glass solution with the silicon dioxide concentration of 10-20 wt% and the modulus of 3.35 for later use;
s2: adding water and aluminum salt into a reaction kettle at the temperature of 30-60 ℃, adding 10-30 wt% sulfuric acid after the aluminum salt is completely dissolved, and adjusting the pH value to 1-3;
s3: simultaneously adding the prepared water glass solution and sulfuric acid into an aluminum salt solution, wherein the parallel flow time is 30-60 min, and the pH value of the system is kept at 1-3;
s4: after the parallel flow is finished, adding sodium hydroxide, adjusting the pH value to 8-10, simultaneously heating to 80-100 ℃, and aging for 2h at the temperature;
s5: after the aging is finished, adding dilute sulfuric acid, adjusting the pH value to 2-4, aging for 0.5-1.5 h, cooling to 60-70 ℃, and filtering to obtain a filter cake;
s6: sequentially washing the filter cake with 1-3 wt% sulfuric acid and water, re-dispersing the washed filter cake in a small amount of water, adding 1-3% of solid content organosilane dispersing agent, and uniformly dispersing to obtain slurry;
s7: spray drying the slurry, and then crushing by air flow to obtain the silicon-aluminum film opening agent with the grain size of 3-7 mu m.
Further, the aluminum salt solution is one or more of aluminum sulfate solution, aluminum nitrate solution and aluminum chloride solution.
Further, the molar ratio of aluminum in the aluminum salt solution to silicon in the water glass is 0.05-0.30: 1.
further, the organosilane dispersing agent is one or more of KH-550, KH-104 and KH-910.
Further, the mass ratio of the low density polyethylene to the high density polyethylene to the linear low density polyethylene is 2: 0.5-1: 0.5-1.5.
Further, the high polymer blend is prepared from atactic polypropylene and ethylene propylene diene monomer according to a mass ratio of 1-5: 2.
Further, the mass ratio of the silicon-aluminum film opening agent to the low-density polyethylene to the high-molecular blend is 1: 4-8: 0.5-1.
Further, the plastic bubble film with good sound and heat insulation effects further comprises the following components in parts by weight: 0.1-1 part of plasticizer; 0.1-1 part of antioxidant; 0.1-1 part of flame retardant; 0.1-1 part of antistatic agent; wherein, the plasticizer is one or a combination of more of diethylene glycol dibenzoate, dibutyl phthalate and dioctyl phthalate; the antioxidant is one of diphenylamine and p-phenylenediamine; the flame retardant is a flame retardant DDP; the antistatic agent is trihydroxyethyl methyl quaternary ammonium methyl sulfate.
Compared with the prior art, the invention has the beneficial effects that:
the silicon-aluminum film opening agent provided by the invention can be uniformly dispersed in film resins such as low-density polyethylene, high-density polyethylene, linear low-density polyethylene and the like, and the silicon-aluminum film opening agent can regulate and control the bulk ratio of the obtained opening agent on the one hand and increase the surface defects of opening agent particles on the other hand by adding aluminum species, so that the silicon-aluminum film opening agent and an organosilane dispersing agent have better combination, the affinity degree of the obtained opening agent particles and the film resins is improved, the antistatic property, the lubricating property and the moisture-proof property of the silicon-aluminum film opening agent are improved, the friction coefficient and the bonding resistance are reduced, and a better opening effect is achieved, so that the strength of a bubble film is improved, and the sound-insulating and heat-insulating effects of the bubble film are further improved.
The smoothness and transparency of the surfaces of the formed bottom layer film and the formed plastic film can be improved by mixing the materials of low-density polyethylene, high-density polyethylene, linear low-density polyethylene and the like; and then, by utilizing the good dispersibility of the silicon-aluminum film opening agent in the film resin and with the assistance of the polymer blend and the polyethylene wax, the bubble film has better wear resistance and tensile strength due to the fact that the silicon-aluminum film opening agent contains silicon, aluminum and other species, and the polymer blend is composed of atactic polypropylene and ethylene propylene diene monomer, so that the bubble film has higher heat resistance and impact resistance.
Detailed Description
The present invention is further described below with reference to specific embodiments, and it should be noted that, without conflict, any combination between the embodiments or technical features described below may form a new embodiment.
The invention provides a plastic bubble film with good sound and heat insulation effects, which comprises the following components in parts by weight:
30-50 parts of low-density polyethylene; 15-25 parts of high-density polyethylene; 20-30 parts of linear low-density polyethylene; 3-8 parts of a silicon-aluminum film opening agent; 1-8 parts of a polymer blend; 0.1-1 part of polyethylene wax.
By adding aluminum species into the silicon-aluminum film opening agent, on one hand, the bulk ratio of the obtained opening agent can be regulated, and meanwhile, the surface defects of opening agent particles are increased, so that the opening agent particles are better combined with an organosilane dispersing agent, the affinity degree of the obtained opening agent particles and film resin is improved, the antistatic property, the lubricating property and the moisture-proof property of the opening agent particles are improved, the friction coefficient and the bonding resistance are reduced, a better opening effect is achieved, the strength of a bubble film is improved, and the sound-insulating and heat-insulating effects of the bubble film are further improved.
The plastic bubble film with good sound and heat insulation effects further comprises the following components in parts by weight: 0.1-1 part of plasticizer; 0.1-1 part of antioxidant; 0.1-1 part of flame retardant; 0.1-1 part of antistatic agent; wherein, the plasticizer is one or a combination of more of diethylene glycol dibenzoate, dibutyl phthalate and dioctyl phthalate; the antioxidant is one of diphenylamine and p-phenylenediamine; the flame retardant is a flame retardant DDP; the antistatic agent is trihydroxyethyl methyl quaternary ammonium methyl sulfate.
The preparation method of the plastic bubble film with good sound and heat insulation effects comprises the following steps: at normal temperature, putting high-density polyethylene, low-density polyethylene, linear low-density polyethylene, high-molecular blend, polyethylene wax and plasticizer into a stirrer, uniformly stirring, adding a silicon-aluminum film opening agent, an antioxidant, a flame retardant and an antistatic agent, continuously stirring until the mixture is uniformly mixed to obtain a mixture, then extruding and granulating the mixture on a double-screw extruder, and finally performing melt extrusion and blow molding to obtain the bubble film.
The polymer blend in the following specific embodiment is prepared from atactic polypropylene and ethylene propylene diene monomer according to the mass ratio of 3: 2, the plasticizer is diethylene glycol dibenzoate, the antioxidant is diphenylamine, and the flame retardant is a flame retardant DDP; the antistatic agent is trihydroxyethyl methyl quaternary ammonium methyl sulfate, and raw materials, equipment and the like used in the following examples can be obtained by purchasing the antistatic agent except for special limitations.
Example 1:
the plastic bubble film comprises the following components in parts by weight: 40 parts of low-density polyethylene; 20 parts of high-density polyethylene; 25 parts of linear low-density polyethylene; 5 parts of a silicon-aluminum film opening agent; 5 parts of a high polymer blend; 0.5 part of polyethylene wax.
The silicon-aluminum film opening agent is prepared by the following method:
50L of bottom water and 45 moles of aluminum sulfate are injected into a stirring reaction vessel at the temperature of 30 ℃, after the aluminum sulfate is completely dissolved, 30 wt% of sulfuric acid is added to adjust the pH value of the system to be 2, 20 wt% of sodium silicate 75L and 30 wt% of sulfuric acid are added in a concurrent flow manner, the pH value of the system is kept to be 2, and the concurrent flow time is 30 minutes.
After the completion of the parallel flow, the temperature was adjusted to 90 ℃, the pH was adjusted to 9 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to 3, aging for 0.5 hour, then cooling to 60 ℃, and filtering to obtain a filter cake. Washing the filter cake with 1 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and 3% solids content of organosilane dispersant KH550 was added. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physical and chemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in a table I:
watch 1
Figure BDA0003168764420000061
The preparation method of the plastic bubble film with good sound and heat insulation effects comprises the following steps: at normal temperature, putting high-density polyethylene, low-density polyethylene, linear low-density polyethylene, high-molecular blend, polyethylene wax and plasticizer into a stirrer, uniformly stirring, adding a silicon-aluminum film opening agent, an antioxidant, a flame retardant and an antistatic agent, continuously stirring until the mixture is uniformly mixed to obtain a mixture, then extruding and granulating the mixture on a double-screw extruder, and finally performing melt extrusion and blow molding to obtain the bubble film.
Example 2:
the plastic bubble film comprises the following components in parts by weight: 40 parts of low-density polyethylene; 20 parts of high-density polyethylene; 25 parts of linear low-density polyethylene; 5 parts of a silicon-aluminum film opening agent; 5 parts of a high polymer blend; 0.5 part of polyethylene wax.
The silicon-aluminum film opening agent is prepared by the following method:
50L of bottom water and 15 moles of aluminum nitrate are injected into a stirring reaction vessel at the temperature of 60 ℃, after the aluminum nitrate is completely dissolved, 10 wt% of sulfuric acid is added to adjust the pH value of the system to be 2, 75L of water glass with the concentration of 20 wt% and 10 wt% of sulfuric acid are added in a concurrent mode, the pH value of the system is kept to be 2, and the concurrent flow time is 90 minutes. After the completion of the parallel flow, the temperature was adjusted to 100 ℃, the pH was adjusted to 10 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to 2, aging for 1.5 hours, then cooling to 60 ℃, and filtering to obtain a filter cake. Washing the filter cake with 3 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and the organosilane dispersant KH550 was added at 1% solids content. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the table II:
watch two
Figure BDA0003168764420000071
The preparation method is the same as that of example 1.
Example 3:
the plastic bubble film comprises the following components in parts by weight: 40 parts of low-density polyethylene; 20 parts of high-density polyethylene; 25 parts of linear low-density polyethylene; 5 parts of a silicon-aluminum film opening agent; 5 parts of a high polymer blend; 0.5 part of polyethylene wax.
The silicon-aluminum film opening agent is prepared by the following method:
50L of bottom water and 30 moles of aluminum chloride are injected into a stirring reaction vessel at the temperature of 40 ℃, sulfuric acid with the concentration of 30 wt% is added after the aluminum chloride is completely dissolved to adjust the pH value of the system to be 2, 75L of water glass with the concentration of 10 wt% and 30 wt% of sulfuric acid are added in a concurrent mode, the pH value of the system is kept to be 2, and the concurrent flow time is 60 minutes. After the completion of the parallel flow, the temperature was adjusted to 80 ℃, the pH was adjusted to 8 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to be 4, aging for 1 hour, then cooling to 70 ℃, and filtering to obtain a filter cake. Washing the filter cake with 1 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and the organosilane dispersant KH104 was added at 2% solids content. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the third table:
watch III
Figure BDA0003168764420000081
The preparation method is the same as that of example 1.
Example 4:
the plastic bubble film comprises the following components in parts by weight: 40 parts of low-density polyethylene; 20 parts of high-density polyethylene; 25 parts of linear low-density polyethylene; 5 parts of a silicon-aluminum film opening agent; 5 parts of a high polymer blend; 0.5 part of polyethylene wax.
The silicon-aluminum film opening agent is prepared by the following method:
50L of bottom water and 15 moles of aluminum sulfate are injected into a stirring reaction vessel at the temperature of 30 ℃, after the aluminum sulfate is completely dissolved, 30 wt% of sulfuric acid is added to adjust the pH value of the system to be 2, 20 wt% of sodium silicate 75L and 30 wt% of sulfuric acid are added in a concurrent flow manner, the pH value of the system is kept to be 2, and the concurrent flow time is 30 minutes. After the completion of the parallel flow, the temperature was adjusted to 90 ℃, the pH was adjusted to 9 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to 3, aging for 0.5 hour, then cooling to 60 ℃, and filtering to obtain a filter cake. Washing the filter cake with 1 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and 2% solids content of organosilane dispersant KH910 was added. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the fourth table:
watch four
Figure BDA0003168764420000091
The preparation method is the same as that of example 1.
Example 5:
the plastic bubble film comprises the following components in parts by weight: 40 parts of low-density polyethylene; 20 parts of high-density polyethylene; 25 parts of linear low-density polyethylene; 5 parts of a silicon-aluminum film opening agent; 5 parts of a high polymer blend; 0.5 part of polyethylene wax.
The silicon-aluminum film opening agent is prepared by the following method:
under the condition of 30 ℃ of temperature, 50L of bottom water and 30 moles of aluminum sulfate are injected into a stirring reaction vessel, after the aluminum sulfate is completely dissolved, 30 wt% of sulfuric acid is added to adjust the pH value of the system to be 2, 20 wt% of sodium silicate 75L and 30 wt% of sulfuric acid are added in a concurrent flow mode, the pH value of the system is kept to be 2, and the concurrent flow time is 30 minutes. After the completion of the parallel flow, the temperature was adjusted to 90 ℃, the pH was adjusted to 9 with sodium hydroxide, and aging was carried out for 2 hours. After the aging is finished, adding sulfuric acid to adjust the pH value to 3, aging for 0.5 hour, then cooling to 60 ℃, and filtering to obtain a filter cake. Washing the filter cake with 1 wt% sulfuric acid, washing with tap water and pure water, and press filtering to obtain the filter cake. The filter cake was redispersed in a small amount of water and 2% solids content of the organosilane dispersant KH550 was added. And after uniform dispersion, spray drying the obtained slurry, and performing jet milling to obtain a product with the particle size of 3-7 microns. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the table five:
watch five
Figure BDA0003168764420000101
The preparation method is the same as that of example 1.
In the above embodiments, each material is not limited to the above components, and each material may also be composed of other single components or multiple components described in the present invention, and the component parts of each material are not limited to the above parts, and the component parts of each material may also be a combination of other component parts described in the present invention, and are not described herein again.
Comparative example 1
The plastic bubble film comprises the following components in parts by weight: 40 parts of low-density polyethylene; 20 parts of high-density polyethylene; 25 parts of linear low-density polyethylene; 5 parts of a silicon-aluminum film opening agent; 5 parts of a high polymer blend; 0.5 part of polyethylene wax.
The operation of the silicon-aluminum film opening agent was the same as in example 1 except that no aluminum salt was added. The physicochemical properties of seven parallel products of the silicon-aluminum film opening agent are shown in the sixth table:
watch six
Figure BDA0003168764420000111
The preparation method is the same as that of example 1.
Comparative example 2
The plastic bubble film comprises the following components in parts by weight: 40 parts of low-density polyethylene; 20 parts of high-density polyethylene; 25 parts of linear low-density polyethylene; 5 parts of a high polymer blend; 0.5 part of polyethylene wax. The other operations were the same as in example 1.
Comparative example 3
The plastic bubble film comprises the following components in parts by weight: 40 parts of low-density polyethylene; 20 parts of high-density polyethylene; 25 parts of linear low-density polyethylene; 5 parts of a silicon-aluminum film opening agent; 0.5 part of polyethylene wax. The other operations were the same as in example 1.
Performance testing and Effect evaluation
The properties of the plastic bubble films obtained in examples 1 to 5 and those obtained in comparative examples 1 to 3 were examined according to QB/T1259-91 standard, as shown in Table seven:
watch seven
Figure BDA0003168764420000112
Figure BDA0003168764420000121
Note: the Z shape is used for heavy packaging, the bubble diameter is 10 mm-30 mm, and the bubble height is 3 mm-10 mm. The Y-shaped plastic is used for general packaging, the bubble diameter is 4 mm-15 mm, and the bubble height is 3 mm-7 mm. The Q type is used for light packaging, the bubble diameter is 3 mm-10 mm, and the bubble height is 2 mm-5 mm.
From the comparative analysis, it is understood that the tensile strength of the plastic bubble film of the present invention is significantly improved as compared with comparative examples 1 to 3, and no breakage or collapse of the bubbles occurs in the compression test.
The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention is not limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are within the protection scope of the present invention.

Claims (10)

1. The plastic bubble film with good sound and heat insulation effects is characterized by comprising the following components in parts by weight:
30-50 parts of low-density polyethylene;
15-25 parts of high-density polyethylene;
20-30 parts of linear low-density polyethylene;
3-8 parts of a silicon-aluminum film opening agent;
1-8 parts of a polymer blend;
0.1-1 part of polyethylene wax.
2. The plastic bubble film with good sound and heat insulation effects as claimed in claim 1, which is characterized by comprising the following components in parts by weight:
40-50 parts of low-density polyethylene;
15-20 parts of high-density polyethylene;
20-30 parts of linear low-density polyethylene;
3-8 parts of a silicon-aluminum film opening agent;
1-3 parts of a polymer blend;
0.1-1 part of polyethylene wax.
3. The plastic bubble film with good sound and heat insulation effects as claimed in claim 1, wherein the silicon-aluminum film opening agent is prepared by the following steps:
s1: preparing a water glass solution with the silicon dioxide concentration of 10-20 wt% and the modulus of 3.35 for later use;
s2: adding water and aluminum salt into a reaction kettle at the temperature of 30-60 ℃, adding 10-30 wt% sulfuric acid after the aluminum salt is completely dissolved, and adjusting the pH value to 1-3;
s3: simultaneously adding the prepared water glass solution and sulfuric acid into an aluminum salt solution, wherein the parallel flow time is 30-60 min, and the pH value of the system is kept at 1-3;
s4: after the parallel flow is finished, adding sodium hydroxide, adjusting the pH value to 8-10, simultaneously heating to 80-100 ℃, and aging for 2h at the temperature;
s5: after the aging is finished, adding dilute sulfuric acid, adjusting the pH value to 2-4, aging for 0.5-1.5 h, cooling to 60-70 ℃, and filtering to obtain a filter cake;
s6: sequentially washing the filter cake with 1-3 wt% sulfuric acid and water, re-dispersing the washed filter cake in a small amount of water, adding 1-3% of solid content organosilane dispersing agent, and uniformly dispersing to obtain slurry;
s7: spray drying the slurry, and then crushing by air flow to obtain the silicon-aluminum film opening agent with the grain size of 3-7 mu m.
4. The plastic bubble film with good sound and heat insulation effects as claimed in claim 3, wherein the aluminum salt solution is one or more of aluminum sulfate solution, aluminum nitrate solution and aluminum chloride solution.
5. The plastic bubble film with good sound and heat insulation effects according to claim 3, wherein the molar ratio of aluminum in the aluminum salt solution to silicon in the water glass is 0.05 to 0.30: 1.
6. the plastic bubble film with good sound and heat insulation effects as claimed in claim 3, wherein the organosilane dispersing agent is one or more of KH-550, KH-104 and KH-910.
7. The plastic bubble film with good sound and heat insulation effects as claimed in claim 1, wherein the mass ratio of the low density polyethylene, the high density polyethylene and the linear low density polyethylene is 2: 0.5-1: 0.5-1.5.
8. The plastic bubble film with good sound and heat insulation effects as claimed in claim 1, wherein the polymer blend is prepared from atactic polypropylene and ethylene propylene diene monomer according to a mass ratio of 1-5: 2.
9. The plastic bubble film with good sound and heat insulation effects as claimed in claim 1, wherein the mass ratio of the silicon-aluminum film opening agent to the low-density polyethylene to the high-molecular blend is 1: 4-8: 0.5-1.
10. The plastic bubble film with good sound and heat insulation effects according to any one of claims 1 to 9, further comprising the following components in parts by weight: 0.1-1 part of plasticizer; 0.1-1 part of antioxidant; 0.1-1 part of flame retardant; 0.1-1 part of antistatic agent; wherein, the plasticizer is one or a combination of more of diethylene glycol dibenzoate, dibutyl phthalate and dioctyl phthalate; the antioxidant is one of diphenylamine and p-phenylenediamine; the flame retardant is a flame retardant DDP; the antistatic agent is trihydroxyethyl methyl quaternary ammonium methyl sulfate.
CN202110812105.7A 2021-07-19 2021-07-19 Plastic bubble film with good sound and heat insulation effects Pending CN113637249A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116574293A (en) * 2023-05-16 2023-08-11 珠海嘉雄包装材料有限公司 Dampproof heat-preserving PE bubble film and preparation method thereof

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CN107540918A (en) * 2017-09-28 2018-01-05 广东天元实业集团股份有限公司 Bubble bags materials
CN109679263A (en) * 2018-12-11 2019-04-26 慈溪市佳发塑业有限公司 A kind of high-strength fire-retardant bubble chamber film
CN109693418A (en) * 2018-12-11 2019-04-30 慈溪市佳发塑业有限公司 A kind of bubble chamber film that mechanical property is good
CN112143035A (en) * 2020-08-19 2020-12-29 广州凌玮科技股份有限公司 Preparation method of silicon-aluminum film opening agent and film opening agent
CN112172293A (en) * 2020-08-19 2021-01-05 广州凌玮科技股份有限公司 High-transparency easy-opening barrier film

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Publication number Priority date Publication date Assignee Title
CN107540918A (en) * 2017-09-28 2018-01-05 广东天元实业集团股份有限公司 Bubble bags materials
CN109679263A (en) * 2018-12-11 2019-04-26 慈溪市佳发塑业有限公司 A kind of high-strength fire-retardant bubble chamber film
CN109693418A (en) * 2018-12-11 2019-04-30 慈溪市佳发塑业有限公司 A kind of bubble chamber film that mechanical property is good
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Publication number Priority date Publication date Assignee Title
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CN116574293B (en) * 2023-05-16 2023-11-28 珠海嘉雄包装材料有限公司 Dampproof heat-preserving PE bubble film and preparation method thereof

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Application publication date: 20211112