CN110551336B - Waterproof folding-resistant drop and manufacturing process thereof - Google Patents
Waterproof folding-resistant drop and manufacturing process thereof Download PDFInfo
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Abstract
The invention discloses a waterproof folding-resistant drop and a manufacturing process thereof, wherein the drop is prepared from the following raw materials in parts by weight: 200-250 parts of ethylene-vinyl acetate copolymer, 140-168 parts of nitrile rubber, 115-130 parts of polyester-polyether multi-block copolymer, 45-53 parts of polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, 30-37 parts of branched polybutylene succinate copolymer, 25-30 parts of polyethyleneimine, 20-25 parts of glass fiber, 15-18 parts of nano silicon dioxide, 6-9 parts of foaming agent, 3-4 parts of zinc isooctanoate, 9-12 parts of processing aid, 4-6 parts of bridging agent, 10-15 parts of antioxidant and 10-15 parts of heat stabilizer. The waterproof folding-resistant drop has excellent folding resistance at normal temperature and low temperature; the density is low and the weight is light; high tensile strength, good mechanical property, durability and good consideration of ultralight property and excellent mechanical property.
Description
Technical Field
The invention relates to the technical field of rubber and plastic products, in particular to a waterproof folding-resistant drop and a manufacturing process thereof.
Background
From the texture, the materials for making the tag are mostly paper, and also plastic and metal. In addition, new drop tags made of holographic anti-counterfeiting materials have appeared. From the aspect of its shape, it is more various: the bamboo strip is long-strip-shaped, folded, round, triangular, pocket-type and other special shapes, is colorful and rich in color and is full of precious stones.
The hangtag is applied to many fields, such as the clothing field, most of which are printed with factory names, factory addresses, telephones, postcodes, logos and the like, and some enterprises are also printed with company properties (such as Chinese and foreign joint ventures, sole ventures and the like). Along with the increasing prosperity of the market, the competition is also forced to be more fierce, and some famous brand manufacturers use various holographic anti-counterfeiting hanging tags and bar codes in order to protect own products from being damaged by fake and shoddy products. The method not only protects the benefits of the enterprises, but also maintains the rights and interests of the consumers.
However, the currently used hangtags have the following problems:
1. the tag is usually made of multilayer paper or common plastics, and has low strength, low tearing strength and low durability, so that the tag is easily damaged and information on the tag is lost;
2. the tag made of the multilayer paper is easy to absorb moisture and absorb moisture, is easy to breed bacteria, and has special smell due to dyes and the like;
3. the hangtag made of common plastic has higher density, is heavy, has poor hand feeling when being used, has poor printing performance on the surface of some hangtags, and cannot realize the printing of various exquisite pictures and texts on the surface of the hangtag.
Therefore, the market demand for special requirements such as durability and the like of some high-end clothes cannot be met.
Disclosure of Invention
Based on the above situation, the present invention aims to provide a waterproof folding-resistant drop and a manufacturing process thereof, which can effectively solve the above problems. The waterproof folding-resistant drop has excellent folding resistance at normal temperature and low temperature (-20 ℃); the waterproof folding-resistant drop has low density, light weight and good hand feeling when in use; the novel hanging tag has the advantages of high tensile strength, good mechanical property and durability, well considers ultralight property and excellent mechanical property, is not easy to cause damage to the hanging tag, can effectively protect information on the hanging tag, and has wide market application prospect.
In order to solve the technical problems, the technical scheme provided by the invention is as follows:
a waterproof folding-resistant drop is prepared from the following raw materials in parts by weight:
200-250 parts of ethylene-vinyl acetate copolymer, 140-168 parts of nitrile rubber, 115-130 parts of polyester-polyether multi-block copolymer, 45-53 parts of polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, 30-37 parts of branched polybutylene succinate copolymer, 25-30 parts of polyethyleneimine, 20-25 parts of glass fiber, 15-18 parts of nano silicon dioxide, 6-9 parts of foaming agent, 3-4 parts of zinc isooctanoate, 9-12 parts of processing aid, 4-6 parts of bridging agent, 10-15 parts of antioxidant and 10-15 parts of heat stabilizer.
Preferably, the waterproof folding-resistant drop is prepared from the following raw materials in parts by weight: 225 parts of ethylene-vinyl acetate copolymer, 152 parts of nitrile rubber, 123 parts of polyester-polyether multi-block copolymer, 49 parts of polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, 33.5 parts of branched polybutylene succinate copolymer, 27.5 parts of polyethyleneimine, 23 parts of glass fiber, 16 parts of nano silicon dioxide, 7.5 parts of foaming agent, 3.5 parts of zinc isooctanoate, 11 parts of processing aid, 5 parts of bridging agent, 12.5 parts of antioxidant and 12.5 parts of heat stabilizer.
Preferably, the processing aid is a mixture of oxidized polyethylene and maleic anhydride grafted polyethylene.
Preferably, the mass ratio of the oxidized polyethylene to the maleic anhydride grafted polyethylene in the mixture of the oxidized polyethylene and the maleic anhydride grafted polyethylene is 10: (16-19).
Preferably, the antioxidant is antioxidant 1076 or antioxidant 1010.
Preferably, the heat stabilizer is zinc stearate.
Preferably, the blowing agent is an AC blowing agent.
Preferably, the bridging agent is a DCP bridging agent.
The invention also provides a manufacturing process of the waterproof folding-resistant drop, which comprises the following steps:
A. the waterproof folding-resistant drop is prepared from the following raw materials in parts by weight: ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, foaming agent, zinc isooctanoate, processing aid, bridging agent, antioxidant and heat stabilizer;
B. feeding an ethylene-vinyl acetate copolymer, nitrile rubber, a polyester-polyether multi-block copolymer, a polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, a branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, a processing aid and a heat stabilizer into a high-speed mixer, controlling the rotating speed at 1500-2000 r/min and the temperature at 82-85 ℃, and mixing for 12-15 min to obtain an EVA mixture;
C. feeding the EVA mixture into an internal mixer, and internally mixing for 12-14 min at the temperature of 92-95 ℃; then banburying for 12-14 min at the temperature of 118-122 ℃, and discharging to obtain a primary mixture;
D. c, conveying the primary mixture obtained in the step C into an open mill, adding a foaming agent, zinc isooctanoate, a bridging agent and an antioxidant, and open milling for 10-12 min at the temperature of 92-95 ℃ to obtain an open mill mixture;
E. and finally, feeding the open-mill mixture into a mold, carrying out hot-pressing foaming to obtain a sheet with the thickness of 0.8-1.5 mm, cooling and forming, and cutting according to requirements to obtain the waterproof folding-resistant drop.
Compared with the prior art, the invention has the following advantages and beneficial effects:
the waterproof folding-resistant drop is prepared by selecting raw materials, optimizing the content of each raw material, and selecting ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, foaming agent, zinc isooctanoate, processing aid, bridging agent, antioxidant and heat stabilizer in proper proportion, so that the advantages of the components are fully exerted, the components are mutually supplemented and promoted, the quality stability of the product is improved, and the prepared waterproof folding-resistant drop has excellent folding resistance at normal temperature and low temperature (-20 ℃); the waterproof folding-resistant drop has low density, light weight and good hand feeling when in use; the novel hanging tag has the advantages of high tensile strength, good mechanical property and durability, well considers ultralight property and excellent mechanical property, is not easy to cause damage to the hanging tag, can effectively protect information on the hanging tag, and has wide market application prospect. In addition, the waterproof folding-resistant drop of the invention has the advantages of no water absorption, good waterproof effect, difficult moisture absorption and moisture absorption, no bacteria breeding and no special odor; the surface printing performance is good, various exquisite pictures and texts can be printed on the surface of the printing ink, and the oil resistance (oil resistance) of the surface is good; well meets the market demands of some high-end clothes and special requirements for durability and the like.
In the waterproof folding-resistant drop, an ethylene-vinyl acetate copolymer is used as one of main base materials.
The elasticity of the waterproof folding-resistant drop is improved by adding a proper amount of nitrile rubber, the folding resistance is improved, the oil resistance of the waterproof folding-resistant drop can be improved, and the oil stain resistance is improved.
The waterproof folding-resistant drop is added with a proper amount of polyester-polyether multi-block copolymer and polystyrene-poly (ethylene-butylene) -polystyrene block copolymer as a composite elastomer, has good compatibility in the raw material system, is matched with other components to play a good synergistic effect, and can obviously improve the elasticity and folding resistance of the waterproof folding-resistant drop.
The waterproof folding-resistant hangtag is added with a proper amount of branched polybutylene succinate copolymer as a long-chain additive, and can increase the distance between molecular chains of ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer and the like, so as to be beneficial to the movement of chain segments and the whole molecular chain, reduce the glass transition temperature and improve the low-temperature resistance, thus further improving the flexibility and elasticity of the waterproof folding-resistant hangtag and improving the folding resistance.
The appropriate amount of polyethyleneimine is added to be matched with a bridging agent for use, and the polyethyleneimine can participate in crosslinking for crosslinking the bridging of ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer and the like, so that the elasticity and resilience of the waterproof folding-resistant hangtag are greatly improved, the permanent deformation is reduced, and the folding resistance is improved.
The proper amount of glass fiber is added, so that the tensile strength, the elongation at break and the like of the waterproof folding-resistant drop are obviously improved, good mechanical properties are ensured, and the ultralight property and the excellent mechanical properties are well considered.
The addition of a proper amount of nano silicon dioxide obviously improves the tensile strength, the elongation at break and the like of the waterproof folding-resistant drop, ensures good mechanical properties and gives a good consideration to ultralight property and excellent mechanical properties.
A proper amount of zinc isooctanoate is added as a foaming auxiliary agent, and in the raw material system of the invention, the foaming agent is matched with an AC foaming agent, so that the foam holes generated by foaming are more uniform, the fineness of the foam holes after foaming is good, and the surface of the product is smooth and fine; the foaming ratio is improved, good mechanical property is ensured, and both ultralight property and excellent mechanical property are well considered.
Adding a proper amount of processing aid, wherein the processing aid is a mixture of oxidized polyethylene and maleic anhydride grafted polyethylene. The lubricating oil mainly plays a role of good lubricating action and compatilizer, increases the processing fluidity, improves the processing performance and the apparent performance of products, increases the compatibility of each component in the raw material system, and ensures the comprehensive performance of the material, such as mechanical property and the like.
The invention has simple manufacturing process and simple and convenient operation, and saves manpower and equipment cost.
Detailed Description
In order that those skilled in the art will better understand the technical solutions of the present invention, the following description of the preferred embodiments of the present invention is provided in connection with specific examples, which should not be construed as limiting the present patent.
The test methods or test methods described in the following examples are conventional methods unless otherwise specified; the reagents and materials, unless otherwise indicated, are conventionally obtained commercially or prepared by conventional methods.
Example 1:
a waterproof folding-resistant drop is prepared from the following raw materials in parts by weight:
200-250 parts of ethylene-vinyl acetate copolymer, 140-168 parts of nitrile rubber, 115-130 parts of polyester-polyether multi-block copolymer, 45-53 parts of polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, 30-37 parts of branched polybutylene succinate copolymer, 25-30 parts of polyethyleneimine, 20-25 parts of glass fiber, 15-18 parts of nano silicon dioxide, 6-9 parts of foaming agent, 3-4 parts of zinc isooctanoate, 9-12 parts of processing aid, 4-6 parts of bridging agent, 10-15 parts of antioxidant and 10-15 parts of heat stabilizer.
Preferably, the waterproof folding-resistant drop is prepared from the following raw materials in parts by weight: 225 parts of ethylene-vinyl acetate copolymer, 152 parts of nitrile rubber, 123 parts of polyester-polyether multi-block copolymer, 49 parts of polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, 33.5 parts of branched polybutylene succinate copolymer, 27.5 parts of polyethyleneimine, 23 parts of glass fiber, 16 parts of nano silicon dioxide, 7.5 parts of foaming agent, 3.5 parts of zinc isooctanoate, 11 parts of processing aid, 5 parts of bridging agent, 12.5 parts of antioxidant and 12.5 parts of heat stabilizer.
Preferably, the processing aid is a mixture of oxidized polyethylene and maleic anhydride grafted polyethylene.
Preferably, the mass ratio of the oxidized polyethylene to the maleic anhydride grafted polyethylene in the mixture of the oxidized polyethylene and the maleic anhydride grafted polyethylene is 10: (16-19).
Preferably, the antioxidant is antioxidant 1076 or antioxidant 1010.
Preferably, the heat stabilizer is zinc stearate.
Preferably, the blowing agent is an AC blowing agent.
Preferably, the bridging agent is a DCP bridging agent.
The embodiment also provides a manufacturing process of the waterproof folding-resistant drop, which comprises the following steps:
A. the waterproof folding-resistant drop is prepared from the following raw materials in parts by weight: ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, foaming agent, zinc isooctanoate, processing aid, bridging agent, antioxidant and heat stabilizer;
B. feeding an ethylene-vinyl acetate copolymer, nitrile rubber, a polyester-polyether multi-block copolymer, a polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, a branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, a processing aid and a heat stabilizer into a high-speed mixer, controlling the rotating speed at 1500-2000 r/min and the temperature at 82-85 ℃, and mixing for 12-15 min to obtain an EVA mixture;
C. feeding the EVA mixture into an internal mixer, and internally mixing for 12-14 min at the temperature of 92-95 ℃; then banburying for 12-14 min at the temperature of 118-122 ℃, and discharging to obtain a primary mixture;
D. c, conveying the primary mixture obtained in the step C into an open mill, adding a foaming agent, zinc isooctanoate, a bridging agent and an antioxidant, and open milling for 10-12 min at the temperature of 92-95 ℃ to obtain an open mill mixture;
E. and finally, feeding the open-mill mixture into a mold, carrying out hot-pressing foaming to obtain a sheet with the thickness of 0.8-1.5 mm, cooling and forming, and cutting according to requirements to obtain the waterproof folding-resistant drop.
Example 2:
a waterproof folding-resistant drop is prepared from the following raw materials in parts by weight:
200 parts of ethylene-vinyl acetate copolymer, 140 parts of nitrile rubber, 115 parts of polyester-polyether multi-block copolymer, 45 parts of polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, 30 parts of branched polybutylene succinate copolymer, 25 parts of polyethyleneimine, 20 parts of glass fiber, 15 parts of nano silicon dioxide, 6 parts of foaming agent, 3 parts of zinc isooctanoate, 9 parts of processing aid, 4 parts of bridging agent, 10 parts of antioxidant and 10 parts of heat stabilizer.
In this example, the processing aid is a mixture of oxidized polyethylene and maleic anhydride grafted polyethylene.
In this embodiment, the mass ratio of the oxidized polyethylene to the maleic anhydride grafted polyethylene in the mixture of the oxidized polyethylene and the maleic anhydride grafted polyethylene is 10: 16.
in this example, the antioxidant is antioxidant 1076.
In this example, the thermal stabilizer is zinc stearate.
In this example, the blowing agent was an AC blowing agent.
In this embodiment, the bridging agent is DCP bridging agent.
In this embodiment, the manufacturing process of the waterproof folding-resistant drop comprises the following steps:
A. the waterproof folding-resistant drop is prepared from the following raw materials in parts by weight: ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, foaming agent, zinc isooctanoate, processing aid, bridging agent, antioxidant and heat stabilizer;
B. feeding ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, processing aid and heat stabilizer into a high-speed mixer, controlling the rotating speed at 1500r/min and the temperature at 82 ℃, and mixing for 15min to obtain an EVA mixture;
C. feeding the EVA mixture into an internal mixer, and internally mixing for 14min at the temperature of 92 ℃; then banburying for 14min at the temperature of 118 ℃, and discharging to obtain a primary mixture;
D. c, conveying the primary mixture obtained in the step C into an open mill, adding a foaming agent, zinc isooctanoate, a bridging agent and an antioxidant, and open milling for 12min at the temperature of 92 ℃ to obtain an open mill mixture;
E. and finally, feeding the open-mixing mixture into a mold, carrying out hot-pressing foaming to obtain a sheet with the thickness of 1mm, cooling and forming, and cutting according to requirements to obtain the waterproof folding-resistant drop.
Example 3:
a waterproof folding-resistant drop is prepared from the following raw materials in parts by weight:
250 parts of ethylene-vinyl acetate copolymer, 168 parts of nitrile rubber, 130 parts of polyester-polyether multi-block copolymer, 53 parts of polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, 37 parts of branched polybutylene succinate copolymer, 30 parts of polyethyleneimine, 25 parts of glass fiber, 18 parts of nano silicon dioxide, 9 parts of foaming agent, 4 parts of zinc isooctanoate, 12 parts of processing aid, 6 parts of bridging agent, 15 parts of antioxidant and 15 parts of heat stabilizer.
In this example, the processing aid is a mixture of oxidized polyethylene and maleic anhydride grafted polyethylene.
In this embodiment, the mass ratio of the oxidized polyethylene to the maleic anhydride grafted polyethylene in the mixture of the oxidized polyethylene and the maleic anhydride grafted polyethylene is 10: 19.
in this example, the antioxidant is antioxidant 1010.
In this example, the thermal stabilizer is zinc stearate.
In this example, the blowing agent was an AC blowing agent.
In this embodiment, the bridging agent is DCP bridging agent.
In this embodiment, the manufacturing process of the waterproof folding-resistant drop comprises the following steps:
A. the waterproof folding-resistant drop is prepared from the following raw materials in parts by weight: ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, foaming agent, zinc isooctanoate, processing aid, bridging agent, antioxidant and heat stabilizer;
B. feeding ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, processing aid and heat stabilizer into a high-speed mixer, controlling the rotating speed at 2000r/min and the temperature at 85 ℃, and mixing for 12min to obtain an EVA mixture;
C. feeding the EVA mixture into an internal mixer, and internally mixing for 12min at the temperature of 95 ℃; then banburying for 12min at the temperature of 122 ℃, and discharging to obtain a primary mixture;
D. c, conveying the primary mixture obtained in the step C into an open mill, adding a foaming agent, zinc isooctanoate, a bridging agent and an antioxidant, and open milling for 10min at the temperature of 95 ℃ to obtain an open mill mixture;
E. and finally, feeding the open-mixing mixture into a mold, carrying out hot-pressing foaming to obtain a sheet with the thickness of 1mm, cooling and forming, and cutting according to requirements to obtain the waterproof folding-resistant drop.
Example 4:
a waterproof folding-resistant drop is prepared from the following raw materials in parts by weight:
225 parts of ethylene-vinyl acetate copolymer, 152 parts of nitrile rubber, 123 parts of polyester-polyether multi-block copolymer, 49 parts of polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, 33.5 parts of branched polybutylene succinate copolymer, 27.5 parts of polyethyleneimine, 23 parts of glass fiber, 16 parts of nano silicon dioxide, 7.5 parts of foaming agent, 3.5 parts of zinc isooctanoate, 11 parts of processing aid, 5 parts of bridging agent, 12.5 parts of antioxidant and 12.5 parts of heat stabilizer.
In this example, the processing aid is a mixture of oxidized polyethylene and maleic anhydride grafted polyethylene.
In this embodiment, the mass ratio of the oxidized polyethylene to the maleic anhydride grafted polyethylene in the mixture of the oxidized polyethylene and the maleic anhydride grafted polyethylene is 10: 17.5.
in this embodiment, the antioxidant is a mixture of 1: 1 antioxidant 1076 and antioxidant 1010.
In this example, the thermal stabilizer is zinc stearate.
In this example, the blowing agent was an AC blowing agent.
In this embodiment, the bridging agent is DCP bridging agent.
In this embodiment, the manufacturing process of the waterproof folding-resistant hangtag includes the following steps:
A. the waterproof folding-resistant drop is prepared from the following raw materials in parts by weight: ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, foaming agent, zinc isooctanoate, processing aid, bridging agent, antioxidant and heat stabilizer;
B. feeding ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, processing aid and heat stabilizer into a high-speed mixer, controlling the rotating speed at 1800r/min and the temperature at 84 ℃, and mixing for 13min to obtain an EVA mixture;
C. feeding the EVA mixture into an internal mixer, and internally mixing for 13min at the temperature of 93 ℃; then banburying for 13min at the temperature of 120 ℃, and discharging to obtain a primary mixture;
D. c, conveying the primary mixture obtained in the step C into an open mill, adding a foaming agent, zinc isooctanoate, a bridging agent and an antioxidant, and open milling for 11min at the temperature of 93 ℃ to obtain an open mill mixture;
E. and finally, feeding the open-milled mixture into a mold, carrying out hot-pressing foaming to obtain a sheet with the thickness of 1mm, cooling and forming, and cutting according to needs to obtain the waterproof folding-resistant hangtag.
Comparative example:
the comparative example is a Chinese patent application publication No. CN106894295A (manufactured to a thickness of 1 mm).
The waterproof and folding-resistant drop obtained in examples 2 to 4 of the present invention and the comparative example were subjected to the following performance tests, and the test results are shown in table 1:
the normal temperature folding resistance and the low temperature folding resistance take the standard of 'surface crack resistance' or 'surface crack' observed by naked eyes.
TABLE 1
As can be seen from the above table, the waterproof folding-resistant drop of the present invention has the following advantages compared to the comparative example:
1. the material has excellent folding resistance at normal temperature and low temperature (-20 ℃);
2. the density of the waterproof folding-resistant drop is far lower than that of a comparative example, and the drop is light in weight;
3. high tensile strength, good mechanical property, durability and good consideration of ultralight property and excellent mechanical property.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiment should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the spirit and scope of the invention, and these modifications and adaptations should be considered within the scope of the invention.
Claims (2)
1. The manufacturing process of the waterproof folding-resistant drop is characterized in that the waterproof folding-resistant drop is prepared from the following raw materials in parts by weight: 200-250 parts of ethylene-vinyl acetate copolymer, 140-168 parts of nitrile rubber, 115-130 parts of polyester-polyether multi-block copolymer, 45-53 parts of polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, 30-37 parts of branched polybutylene succinate copolymer, 25-30 parts of polyethyleneimine, 20-25 parts of glass fiber, 15-18 parts of nano silicon dioxide, 6-9 parts of foaming agent, 3-4 parts of zinc isooctanoate, 9-12 parts of processing aid, 4-6 parts of bridging agent, 10-15 parts of antioxidant and 10-15 parts of heat stabilizer; the processing aid is a mixture of oxidized polyethylene and maleic anhydride grafted polyethylene, and the mass ratio of the oxidized polyethylene to the maleic anhydride grafted polyethylene in the mixture of the oxidized polyethylene and the maleic anhydride grafted polyethylene is 10: (16-19); the antioxidant is antioxidant 1076 or antioxidant 1010; the heat stabilizer is zinc stearate; the foaming agent is an AC foaming agent; the bridging agent is DCP bridging agent; the manufacturing process comprises the following steps:
A. the waterproof folding-resistant drop is prepared from the following raw materials in parts by weight: ethylene-vinyl acetate copolymer, nitrile rubber, polyester-polyether multi-block copolymer, polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, foaming agent, zinc isooctanoate, processing aid, bridging agent, antioxidant and heat stabilizer;
B. feeding an ethylene-vinyl acetate copolymer, nitrile rubber, a polyester-polyether multi-block copolymer, a polystyrene-poly (ethylene-butylene) -polystyrene block copolymer, a branched polybutylene succinate copolymer, polyethyleneimine, glass fiber, nano silicon dioxide, a processing aid and a heat stabilizer into a high-speed mixer, controlling the rotating speed at 1500-2000 r/min and the temperature at 82-85 ℃, and mixing for 12-15 min to obtain an EVA mixture;
C. feeding the EVA mixture into an internal mixer, and internally mixing for 12-14 min at the temperature of 92-95 ℃; then banburying for 12-14 min at the temperature of 118-122 ℃, and discharging to obtain a primary mixture;
D. c, conveying the primary mixture obtained in the step C into an open mill, adding a foaming agent, zinc isooctanoate, a bridging agent and an antioxidant, and open milling for 10-12 min at the temperature of 92-95 ℃ to obtain an open mill mixture;
E. and finally, feeding the open-mill mixture into a mold, carrying out hot-pressing foaming to obtain a sheet with the thickness of 0.8-1.5 mm, cooling and forming, and cutting according to requirements to obtain the waterproof folding-resistant drop.
2. A waterproof folding-resistant drop made by the process of claim 1.
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| CN112233538B (en) * | 2020-11-05 | 2022-04-26 | 石狮市创意纸塑制品有限公司 | Clothing drop convenient to take down and manufacturing method thereof |
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