CN113136091A - Daily tray and preparation method thereof - Google Patents
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- CN113136091A CN113136091A CN202110351145.6A CN202110351145A CN113136091A CN 113136091 A CN113136091 A CN 113136091A CN 202110351145 A CN202110351145 A CN 202110351145A CN 113136091 A CN113136091 A CN 113136091A
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- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000003365 glass fiber Substances 0.000 claims abstract description 53
- 239000012745 toughening agent Substances 0.000 claims abstract description 29
- 239000000463 material Substances 0.000 claims abstract description 25
- -1 polyethylene terephthalate Polymers 0.000 claims abstract description 18
- 229920000139 polyethylene terephthalate Polymers 0.000 claims abstract description 18
- 239000005020 polyethylene terephthalate Substances 0.000 claims abstract description 18
- 239000002270 dispersing agent Substances 0.000 claims abstract description 17
- 239000000314 lubricant Substances 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 15
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 15
- 229920003023 plastic Polymers 0.000 claims abstract description 14
- 239000004033 plastic Substances 0.000 claims abstract description 14
- 238000001125 extrusion Methods 0.000 claims abstract description 7
- 238000010137 moulding (plastic) Methods 0.000 claims abstract description 7
- 238000000465 moulding Methods 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 5
- 238000003825 pressing Methods 0.000 claims abstract description 5
- 239000002131 composite material Substances 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims abstract description 3
- 238000000576 coating method Methods 0.000 claims abstract description 3
- 230000008018 melting Effects 0.000 claims abstract description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 claims description 20
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 20
- 238000004381 surface treatment Methods 0.000 claims description 13
- RMTFNDVZYPHUEF-XZBKPIIZSA-N 3-O-methyl-D-glucose Chemical compound O=C[C@H](O)[C@@H](OC)[C@H](O)[C@H](O)CO RMTFNDVZYPHUEF-XZBKPIIZSA-N 0.000 claims description 6
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 6
- 239000008103 glucose Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 6
- 239000012188 paraffin wax Substances 0.000 claims description 6
- 229920000036 polyvinylpyrrolidone Polymers 0.000 claims description 6
- 235000013855 polyvinylpyrrolidone Nutrition 0.000 claims description 6
- 239000001267 polyvinylpyrrolidone Substances 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 5
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 5
- 238000002791 soaking Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 4
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 4
- RCEAADKTGXTDOA-UHFFFAOYSA-N OS(O)(=O)=O.CCCCCCCCCCCC[Na] Chemical compound OS(O)(=O)=O.CCCCCCCCCCCC[Na] RCEAADKTGXTDOA-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 claims description 2
- 239000000454 talc Substances 0.000 claims description 2
- 229910052623 talc Inorganic materials 0.000 claims description 2
- 239000000047 product Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 11
- 239000002994 raw material Substances 0.000 description 11
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 6
- 239000000203 mixture Substances 0.000 description 5
- 230000006872 improvement Effects 0.000 description 4
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 3
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 230000007306 turnover Effects 0.000 description 3
- 239000002202 Polyethylene glycol Substances 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- WOZVHXUHUFLZGK-UHFFFAOYSA-N dimethyl terephthalate Chemical compound COC(=O)C1=CC=C(C(=O)OC)C=C1 WOZVHXUHUFLZGK-UHFFFAOYSA-N 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 229920006255 plastic film Polymers 0.000 description 2
- 229920001223 polyethylene glycol Polymers 0.000 description 2
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 2
- 238000007666 vacuum forming Methods 0.000 description 2
- XRBXGZZMKCBTFP-UHFFFAOYSA-N 4-(2,2-dihydroxyethoxycarbonyl)benzoic acid Chemical compound OC(O)COC(=O)C1=CC=C(C(O)=O)C=C1 XRBXGZZMKCBTFP-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- QYKIQEUNHZKYBP-UHFFFAOYSA-N Vinyl ether Chemical compound C=COC=C QYKIQEUNHZKYBP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000006482 condensation reaction Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000010292 electrical insulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000989 no adverse effect Toxicity 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000012222 talc Nutrition 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
- C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
Abstract
The application relates to the technical field of daily trays, and particularly discloses a daily tray and a preparation method thereof. The technical key points are as follows: a daily tray comprises the following components in parts by weight: 80-100 parts of polyethylene terephthalate, 0.1-0.3 part of dispersant, 1-2 parts of antioxidant, 10-15 parts of lubricant and 1-3 parts of glass fiber. The preparation steps of the tray are as follows: s1, mixing and extruding: uniformly mixing polyethylene terephthalate, a dispersing agent, an antioxidant, a dispersing agent, a lubricant, a toughening agent and glass fibers, then putting into an extruder, and carrying out extrusion molding to obtain a film material; s2, plastic suction molding: and (3) coating the film material on the template by hot melting through a plastic molding device at the temperature of 160-200 ℃, pressing the edge of the film material, and carrying out vacuum plastic molding to obtain the composite material. The tray that this application was prepared has mechanical strength and is higher, longer advantage of life.
Description
Technical Field
The application relates to the technical field of trays, in particular to a daily tray and a preparation method thereof.
Background
Polyethylene terephthalate, abbreviated as PET, is generally obtained by the dehydration condensation reaction of polyethylene terephthalate, and PET is a milky white or light yellow polymer with high crystallinity and smooth and glossy surface. The high-temperature-resistant and high-frequency-resistant composite material has excellent physical and mechanical properties in a wider temperature range, the long-term use temperature can reach 120 ℃, the electrical insulation property is excellent, even under high temperature and high frequency, the electrical property is still good, but the corona resistance is poor, and the creep resistance, the fatigue resistance, the friction resistance and the dimensional stability are good.
The plastic tray is a plastic product produced by a plastic suction process, and is generally formed into a plastic disc shape by heating a plastic suction packing box sheet at a high temperature, sucking air in vacuum and cooling. The plastic tray is made of PVC, PS, PP, PET, PETG and other materials.
At present, the blister tray is widely used for containing common daily necessities or food utensils in restaurants and the like due to simple production process and low product selling price, but the existing daily tray cannot be used for a long time due to the characteristics of low strength, poor toughness and the like, and the strength performance still needs to be improved.
Disclosure of Invention
In order to improve the mechanical strength of a daily tray and prolong the turnover service life of the daily tray, the application provides the daily tray and a preparation method thereof.
In a first aspect, the present application provides a daily tray, which adopts the following technical scheme:
a daily tray comprises the following components in parts by weight: 80-100 parts of polyethylene terephthalate, 0.1-0.3 part of dispersant, 1-2 parts of antioxidant, 10-15 parts of lubricant and 1-3 parts of glass fiber.
By adopting the technical scheme, the polyethylene glycol terephthalate is prepared by exchanging dimethyl terephthalate with ethylene glycol or esterifying terephthalic acid with ethylene glycol to synthesize dihydroxyethyl terephthalate, and then performing polycondensation reaction, and has good physical and mechanical properties, creep resistance, fatigue resistance, friction resistance and dimensional stability in a wider temperature range. This application is through adding glass fiber in raw materials component, and glass fiber combines together with polyethylene glycol terephthalate to increase the intensity and the toughness of final product, make the tray that makes have higher mechanical strength and toughness, in order to improve turnover number of times and life when the product is as daily tray.
Further preferably, the daily tray comprises the following components in parts by weight: 90-100 parts of polyethylene terephthalate, 0.2-0.3 part of dispersant, 1.5-2 parts of antioxidant, 13-15 parts of lubricant and 2-3 parts of glass fiber.
By adopting the technical scheme, the proportion is the optimal proportion of each raw material component, and the product prepared by the formula has higher mechanical strength and toughness and greatly prolonged service life.
More preferably, the dispersant is one or two of polyvinylpyrrolidone and polydimethylsiloxane.
By adopting the technical scheme, the dispersing agent is added to change the compatibility activity of the surfaces of the materials, improve the compatibility and ensure that the raw material components can be uniformly mixed, thereby ensuring that the prepared tray has higher mechanical property.
More preferably, the antioxidant is one or more of diphenylamine, p-diphenylamine and dialkyl diphenylamine.
Through adopting above-mentioned technical scheme, PET is macromolecular material, and it is easy to generate thermal oxidation degradation reaction, and easy oxidative decomposition leads to life to reduce in the use, through inserting the oxidant, can keep macromolecular material's oxidation resistance, prolongs ageing and the life of tray.
More preferably, the lubricant is one or two of paraffin and talcum powder.
By adopting the technical scheme, the addition of the lubricant can reduce the frictional resistance between raw materials, the lubrication degree is good, the abrasion degree of a product is reduced, the lubricating agent is used for improving the fluidity and the demolding performance of plastic processing, reducing the torque, reducing the friction of equipment, easily punching a die, reducing the reject ratio of the product, improving the smoothness and improving the surface glossiness of the product.
Further preferably, the daily tray also comprises 1-3 parts of a toughening agent by weight, wherein the toughening agent is one or more of an SBS toughening agent, an MBS toughening agent and an ABS toughening agent.
By adopting the technical scheme, the toughness of the tray can be improved by adding the toughening agent, the comprehensive performance of impact resistance and modulus maintenance is provided for the product, particularly the MBS toughening agent can not damage other performances such as heat deformation temperature while the impact resistance of the product is improved, and the product has no adverse effect on the weather resistance and good use effect.
In a second aspect, the application provides a preparation method of a daily tray, which adopts the following technical scheme:
a preparation method of a daily tray comprises the following steps:
s1, mixing and extruding: uniformly mixing polyethylene terephthalate, a dispersing agent, an antioxidant, a lubricant, a toughening agent and glass fibers, then putting into an extruder, and carrying out extrusion molding to obtain a film material;
s2, plastic suction molding: and (3) coating the film material on the template by hot melting through a plastic molding device at the temperature of 160-200 ℃, pressing the edge of the film material, and carrying out vacuum plastic molding to obtain the composite material.
By adopting the technical scheme, the preparation process is simple, the industrial large-scale production is suitable, and the prepared product has high mechanical property and long service life.
Further preferably, the glass fiber is subjected to surface treatment before mixing, and the specific steps are as follows: soaking glass fiber into a surface treatment liquid for 1-2min, taking out, washing with deionized water for 2-3 times, and drying to obtain the surface treatment liquid, wherein the surface treatment liquid comprises the following components in parts by weight: 10-15 parts of hydrofluoric acid with the concentration of 0.15mol/L, 0.1-0.3 part of methyl glucose polyoxyethylene ether, 0.5-1 part of glucose and 0.1-0.2 part of lauryl sodium sulfate.
Through adopting above-mentioned technical scheme, handle the glass fiber surface with hydrofluoric acid, can detach the surperficial superficial layer that has the defect of glass fiber, thereby improve glass fiber's self intensity, and control hydrofluoric acid concentration and be 0.15mol/L, hydrofluoric acid can further react with the glass fiber surface, play certain bite and corrode the effect to the glass fiber surface, make glass fiber surface form the concave-convex point, with the cohesion between improvement glass fiber and other materials, improve the compatibility, make the tray internal tissue who makes compacter, mechanical strength is higher. By adding methyl glucose polysaccharide vinyl ether and glucose, the formation uniformity of concave-convex points on the surface of the glass fiber can be ensured, and the surface corrosion amplitude of the hydrofluoric acid glass fiber can be controlled; by adding the sodium dodecyl sulfate, reaction impurities attached to the surface of the glass fiber can be removed, and the hydrofluoric acid can be ensured to normally bite the surface of the glass fiber.
More preferably, the temperature of the extruder is controlled from the feed inlet to the discharge outlet to be 195 ℃, 200-.
Through adopting above-mentioned technical scheme, through adopting foretell multistage temperature, can carry out abundant plastify and mixing with the material.
In summary, the present application has the following beneficial effects:
(1) according to the tray, the glass fiber is added into the raw material components, and the glass fiber is combined with the polyethylene terephthalate, so that the strength and toughness of a final product are improved, the manufactured tray has higher mechanical strength and toughness, and the turnover frequency and the service life of the product as a daily tray are improved;
(2) the toughness of the tray is further improved by adding the toughening agent, and the comprehensive performance of impact resistance and modulus maintenance is provided for the product;
(3) this application is when preparing the tray, still carries out surface treatment earlier to glass fiber, can detach the surperficial superficial layer that has the defect of glass fiber to improve glass fiber's self intensity, through the bite erosion of acid to glass fiber surface, can make glass fiber surface form the concave-convex point, in order to improve the cohesion between glass fiber and the other materials, improve the compatibility, make the tray internal tissue who makes compacter, mechanical strength is higher.
Detailed Description
The present application will be described in further detail with reference to examples.
Some of the raw material sources in the examples and comparative examples of the present application are as follows:
polyethylene terephthalate is available from Shanghai Naixi plastication science, Inc.;
paraffin and talc were purchased from jinan saint and chemical ltd;
the SBS toughening agent, the MBS toughening agent and the ABS toughening agent are all purchased from national Feng rubber and plastic Limited company in Jinhua city;
the glass fiber is purchased from SH-2-1200 type continuous ultrahigh strength glass fiber of medium material science and technology limited.
Examples
Example 1
A daily tray, the components and their respective weights are as shown in table 1, and prepared by the following steps:
s1, mixing and extruding: uniformly mixing polyethylene terephthalate, a dispersing agent, an antioxidant, a lubricant and glass fibers, then putting into a double-screw extruder, and extruding and molding, wherein the temperature of the double-screw extruder is controlled from a feed inlet to a discharge outlet to be 195 ℃, 205 ℃, 215 ℃, 225 ℃ and 235 ℃ in sequence to obtain a membrane material;
s2, plastic suction molding: hot-melting the film material on the template by using a plastic molding device at 160 ℃, pressing the edge of the film material, and vacuum forming to obtain the plastic film.
Wherein the dispersant adopts polyvinylpyrrolidone, the antioxidant adopts diphenylamine, and the lubricant adopts paraffin.
Examples 2 to 6
A daily use pallet differing from example 1 in that the components and their respective weights are as shown in table 1.
TABLE 1 Components and weights (kg) thereof in examples 1-6
Example 7
A daily tray which is different from the daily tray in the embodiment 1 in that the dispersant is a mixture of polyvinylpyrrolidone and polydimethylsiloxane oil, and the weight ratio of the polyvinylpyrrolidone to the polydimethylsiloxane oil is 1: 2; the antioxidant is a mixture of diphenylamine and p-diphenylamine, and the weight ratio of diphenylamine to p-diphenylamine is 1: 1; the lubricant is a mixture of paraffin and talcum powder, and the weight ratio of the paraffin to the talcum powder is 1: 1.3.
Example 8
A daily tray is different from the tray in example 1 in that the antioxidant is a mixture of diphenylamine, p-diphenylamine and dialkyl diphenylamine, and the weight ratio of diphenylamine, p-diphenylamine and dialkyl diphenylamine is 1:1: 1.
Example 9
A daily tray is different from the daily tray in example 1 in that the raw material components also comprise 1kg of toughening agent, and the daily tray is prepared by the following steps:
s1, mixing and extruding: uniformly mixing polyethylene terephthalate, a dispersing agent, an antioxidant, a lubricant, a toughening agent and glass fibers, then putting the mixture into a double-screw extruder, and carrying out extrusion molding, wherein the temperature of the double-screw extruder is controlled from a feed inlet to a discharge outlet to be 195 ℃, 210 ℃, 217 ℃, 230 ℃ and 235 ℃ in sequence, so as to obtain a membrane material;
s2, plastic suction molding: hot-melting the film material on the template by using a plastic forming device at the temperature of 200 ℃, pressing the edge of the film material, and vacuum forming to obtain the plastic film.
Wherein the toughening agent adopts SBS toughening agent.
Example 10
A daily tray which is different from the daily tray in example 9 in that the toughening agent adopts MBS toughening agent.
Example 11
A daily tray which is different from the tray of example 9 in that an ABS toughening agent is used as a toughening agent.
Example 12
The daily tray is different from the daily tray in the embodiment 1 in that the glass fiber is further subjected to surface treatment before mixed extrusion, and the specific treatment steps are as follows:
uniformly mixing 1kg of hydrofluoric acid with the concentration of 0.15mol/L, 0.01kg of methyl glucose polyoxyethylene ether, 0.05kg of glucose and 0.01kg of lauryl sodium sulfate to obtain a treatment solution; and (3) soaking the glass fiber into the treatment solution, taking out after 1min, washing for 3 times by using deionized water, and airing to obtain the glass fiber.
Example 13
The daily tray is different from the daily tray in the embodiment 1 in that the glass fiber is further subjected to surface treatment before mixed extrusion, and the specific treatment steps are as follows:
uniformly mixing 1.3kg of hydrofluoric acid with the concentration of 0.15mol/L, 0.02kg of methyl glucose polyoxyethylene ether, 0.07kg of glucose and 0.015kg of sodium dodecyl sulfate to obtain a treatment solution; and (3) soaking the glass fiber in the treatment solution, taking out after 1.5min, washing for 3 times by using deionized water, and airing to obtain the glass fiber.
Example 14
The daily tray is different from the daily tray in the embodiment 1 in that the glass fiber is further subjected to surface treatment before mixed extrusion, and the specific treatment steps are as follows:
uniformly mixing 1.5kg of hydrofluoric acid with the concentration of 0.15mol/L, 0.03kg of methyl glucose polyoxyethylene ether, 0.1kg of glucose and 0.02kg of sodium dodecyl sulfate to obtain a treatment solution; and (3) soaking the glass fiber in the treatment solution, taking out after 2min, washing for 3 times by using deionized water, and airing to obtain the glass fiber.
Comparative example
Comparative example 1
A daily tray which is different from the tray of example 1 in that no glass fiber is added to the raw material components.
Comparative example 2
A daily use tray which is different from example 1 in that polyvinylpyrrolidone is not added to the raw material components.
Performance test
The daily-use pallets obtained in examples 1 to 14 and comparative examples 1 to 2 were subjected to performance tests for tensile strength and impact strength, respectively. Impact strength describes the degree of toughness, or ability to resist fracture, exhibited by a polymeric material under high impact. In general, impact toughness includes two aspects: the deformation ability after impact, expressed as elongation at break, and the fracture resistance, expressed as impact strength.
Wherein the tensile strength is tested by adopting a YMD-W50KN pallet compressive strength detector;
the impact strength was tested using a HT-318E steel ball impact tester.
The test results are shown in table 2 below.
Table 2 results of performance testing
| Group of | Tensile Strength (MPa) | Impact Strength (J/m) |
| Example 1 | 34.67 | 59.39 |
| Example 2 | 34.27 | 59.17 |
| Example 3 | 34.16 | 59.64 |
| Example 4 | 34.58 | 59.24 |
| Example 5 | 34.13 | 59.46 |
| Example 6 | 34.65 | 59.34 |
| Example 7 | 34.15 | 59.12 |
| Example 8 | 34.93 | 59.54 |
| Example 9 | 36.97 | 60.58 |
| Example 10 | 36.65 | 61.41 |
| Example 11 | 36.57 | 61.35 |
| Example 12 | 39.74 | 72.19 |
| Example 13 | 41.52 | 74.37 |
| Practice ofExample 14 | 40.21 | 73.54 |
| Comparative example 1 | 26.51 | 44.34 |
| Comparative example 2 | 32.14 | 55.10 |
As can be seen from the test data in Table 2, the tensile strength and impact strength of example 1 are significantly higher than those of comparative example 1 due to the addition of the glass fiber in example 1 as compared to comparative example 1; compared with the comparative example 2, the mechanical property of the prepared product is reduced because the components of the materials are not uniformly mixed due to no addition of the dispersing agent in the comparative example 2.
Compared with the embodiment 1, the embodiment 9-11 has the advantages that the tensile strength and the impact strength are improved due to the fact that the embodiment 9-11 adds a certain amount of the toughening agent in the raw material components, and the increase of the toughening agent is proved to be helpful for improving the mechanical property of the pallet.
Compared with the example 1, the glass fibers in the examples 11 to 14 are subjected to surface treatment before being added, so that the strength of the added glass fibers is high, the bonding force between the glass fibers and other raw material components is improved, and the mechanical strength of the finally prepared product is greatly improved.
In conclusion, the mechanical strength of the tray can be obviously improved by adding the glass fibers, and after the surface of the glass fibers is treated by the acid treatment solution provided by the application, the mechanical strength of the tray is improved more obviously, and the improvement amplitude is larger.
The above description is only a preferred embodiment of the present application, and the protection scope of the present application is not limited to the above embodiments, and all technical solutions belonging to the idea of the present application belong to the protection scope of the present application. It should be noted that several improvements and modifications to the present application without departing from the principles of the present application will occur to those skilled in the art, and such improvements and modifications should also be considered within the scope of the present application.
Claims (9)
1. The daily tray is characterized by comprising the following components in parts by weight: 80-100 parts of polyethylene terephthalate, 0.1-0.3 part of dispersant, 1-2 parts of antioxidant, 10-15 parts of lubricant and 1-3 parts of glass fiber.
2. The household tray according to claim 1, comprising the following components in parts by weight: 90-100 parts of polyethylene terephthalate, 0.2-0.3 part of dispersant, 1.5-2 parts of antioxidant, 13-15 parts of lubricant and 2-3 parts of glass fiber.
3. The household tray according to claim 1, wherein the dispersant is one or both of polyvinylpyrrolidone and polydimethylsiloxane.
4. The consumer tray of claim 1 wherein the antioxidant is one or more of diphenylamine, p-diphenylamine and dialkyldiphenylamines.
5. The consumer tray of claim 1 wherein the lubricant is one or both of paraffin wax and talc.
6. The daily tray as claimed in claim 1, further comprising 1-3 parts by weight of a toughening agent, wherein the toughening agent is one or more of an SBS toughening agent, an MBS toughening agent and an ABS toughening agent.
7. A process for the preparation of a household tray as claimed in any one of claims 1 to 6, comprising the steps of:
s1, mixing and extruding: uniformly mixing polyethylene terephthalate, a dispersing agent, an antioxidant, a lubricant, a toughening agent and glass fibers, then putting into an extruder, and carrying out extrusion molding to obtain a film material;
s2, plastic suction molding: and (3) coating the film material on the template by hot melting through a plastic molding device at the temperature of 160-200 ℃, pressing the edge of the film material, and carrying out vacuum plastic molding to obtain the composite material.
8. The method for preparing the daily tray according to claim 7, wherein the glass fiber is further subjected to surface treatment before mixing, and the method comprises the following specific steps: soaking glass fiber into a surface treatment liquid for 1-2min, taking out, washing with deionized water for 2-3 times, and drying to obtain the surface treatment liquid, wherein the surface treatment liquid comprises the following components in parts by weight: 10-15 parts of hydrofluoric acid with the concentration of 0.15mol/L, 0.1-0.3 part of methyl glucose polyoxyethylene ether, 0.5-1 part of glucose and 0.1-0.2 part of lauryl sodium sulfate.
9. The method as claimed in claim 7, wherein the temperature of the extruder is controlled from the inlet to the outlet at 195 ℃, 200-.
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