CN113549259A

CN113549259A - Manufacturing formula and manufacturing method of elastic rotating body

Info

Publication number: CN113549259A
Application number: CN202110860772.2A
Authority: CN
Inventors: 许运动; 许恪铭
Original assignee: Jiangsu Keming Intelligent Transportation Technology Co ltd
Current assignee: Jiangsu Keming Intelligent Transportation Technology Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2021-10-26

Abstract

The invention discloses a manufacturing formula and a manufacturing method of an elastic rotating body, and belongs to the technical field of foaming materials. The formula comprises the following specific components in percentage by mass: 10-20% of an ethylene-octene copolymer; 45-55% of EVA; 10-20% of ethylene propylene diene monomer; e20-585-10%; 1-2% of talcum powder with the particle size less than or equal to 200 nm; 0.8-1.2% of titanium gypsum; 0.1-0.2% of a coupling agent; 0.5-0.8% of vegetable oil; 0.6-1.6% of a dispersing lubricant; 1-2% of zinc oxide; 0.7-1.2% of dicumyl peroxide; ACR 4012.5-2.8%; 1.5-2.5% of fatty acid ester; 1.5-3% of titanium dioxide. The adopted fillers are talcum powder and titanium gypsum with the grain diameter less than or equal to 200nm, the hole rate of the elastic rotating body is reduced to about 0.1%, and the compactness is good.

Description

Manufacturing formula and manufacturing method of elastic rotating body

Technical Field

The invention belongs to the technical field of foaming materials, and particularly relates to a manufacturing formula and a manufacturing method of an elastic rotating body.

Background

With the rapid development of economy, automobiles are commonly used as a convenient vehicle. In China, the speed limit of different roads is different, for example, the speed limit of urban roads is 40 kilometers per hour, the speed limit of ordinary roads is 40-80 kilometers per hour, and the speed limit of express highways is 60-120 kilometers per hour, so most of traffic accidents in urban areas are rear-end accidents, and on the ordinary roads or the express highways, traffic accidents frequently occur due to the fact that the speed of automobiles is too fast, most serious of the traffic accidents are that automobiles running at high speed collide against guard rails on the roadside or in the middle of the roads, and the guard rails are composed of concrete bricks or concrete blocks arranged at intervals and transverse bars connecting adjacent blocks, or are composed of cross bars and vertical columns connected through steel structures, but the guard rails cannot absorb collision kinetic energy of the automobiles.

For this reason, rotary crash barriers have appeared on the market today, for example chinese patent CN201080000561.1 discloses a road impact absorbing facility; chinese patent CN201220370227.1 discloses an SA-level rotary crash barrier with a rotating body for absorbing impact force; and chinese patent CN201610384329.1 filed by the applicant in 2016, month 5, discloses a road traffic guardrail capable of buffering and absorbing impact. The main part of the rotating anti-collision traffic guardrail is an elastic rotating body, as shown in fig. 1, the elastic rotating body is made of one of ethylene-vinyl acetate (EVA) and flexible polyurethane through foaming, various uncertain factors existing in the foaming process cause uneven foaming of the elastic rotating body, holes can be generated on the surface of a cylinder body, the rotating anti-collision traffic guardrail is generally installed in the middle or two sides of a road, dust raised by vehicle running and tiny dust in air can easily fall on the surface of the elastic rotating body, the dust enters the holes in the surface, and after long-time accumulation, the surface of the elastic rotating body can be blackened, particularly, the elastic rotating body located in the middle of an urban road directly affects the attractiveness.

The inventor found that chinese patent application No. 201821230798.9, published as 2019, 5, 7, discloses an elastic rotating body having a central symmetry and a hollow space inside, and an inlet port closable with a lid is formed in a part of the upper surface of the elastic rotating body, so that a foaming material can be introduced through the inlet port to form an elastic foamed material in the space. The elastic rotating body disclosed in the patent is provided with a layer of shell outside the foaming material, and the shell can prevent dust from falling into the foaming material to a certain extent, so that the problem of surface blackening is avoided.

In addition, in order to reduce the pores on the surface of the elastic rotating body, the raw material foaming angle can be used, for example, chinese patent application No. 201810703378.6 discloses a graphene-foamed EVA composite material, in which graphene oxide microspheres in the pores are expanded and reduced to gradually fill the pores, and finally, a porous graphene-filled foamed EVA material is obtained. The graphene is filled in the EVA holes, plays a role in supporting and energy absorption, and can effectively improve the strength and elasticity of the foaming material. Further, as in chinese patent application No. 201711082196.3, a permanently antistatic and conductive EVA is disclosed, which contains LDPE, EVA and calcium powder, and the product obtained is void-free. In the invention patent with patent application number 2017105194257, the surface porosity is almost zero under the harsh test conditions, and in the actual production process, the specific surface porosity still reaches more than 0.5%, and dust still enters the surface, so that the surface is blackened, as shown in fig. 2.

Disclosure of Invention

1. Problems to be solved

Aiming at the problem that the surface of the existing elastic rotating body is easy to blacken, the invention provides the manufacturing formula and the manufacturing method of the elastic rotating body.

2. Technical scheme

In order to solve the problems, the technical scheme adopted by the invention is as follows:

the manufacturing formula of the elastic rotator comprises the following specific components in parts by mass: 10-20% of ethylene-octene copolymer (POE); 45-55% of EVA; 10-20% of ethylene propylene diene monomer; an anti-shrinking agent E20-585-10%; 1-2% of talcum powder with the particle size less than or equal to 200 nm; 0.8-1.2% of titanium gypsum with the particle size of less than or equal to 200 nm; 0.1-0.2% of a coupling agent; 0.5-0.8% of vegetable oil; 0.6-1.6% of a dispersing lubricant; 1-2% of nano zinc oxide; 0.7-1.2% of dicumyl peroxide; 2.5-2.8% of ACR401 foaming agent; 1.5-2.5% of fatty acid ester; 1.5-3% of titanium dioxide.

In one possible embodiment of the invention, the total content of the talcum powder with the grain diameter less than or equal to 200nm and the titanium gypsum with the grain diameter less than or equal to 200nm does not exceed 3 percent. Based on the calculation of EVA foaming relationship, the total amount of generated pores can be filled with 3% (mass fraction) of filler, the titanium gypsum has 2 crystal waters, and when the temperature reaches 163 ℃ in the foaming process, the 2 crystal waters are lost, and the mass fraction is reduced.

In one possible embodiment of the present invention, the coupling agent is one of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent and an aluminum-titanium composite coupling agent. The titanium gypsum has strong polarity, and is easy to be uniformly mixed under the action of the coupling agent.

In one possible embodiment of the invention, the vegetable oil is one of rapeseed oil, peanut oil, soybean oil, sunflower oil and palm oil.

In one possible embodiment of the present invention, the dispersing lubricant is one or more of stearic acid, zinc stearate, calcium stearate, magnesium stearate, and low molecular wax.

The invention also provides a preparation method of the elastic rotating body, which comprises the following specific steps:

step S101, uniformly mixing titanium gypsum, a coupling agent and vegetable oil according to the mass fraction of a formula;

step S102, adding the ethylene-octene copolymer, the titanium gypsum, the ethylene propylene diene monomer, the E20-58, the talcum powder, the EVA, the dispersing lubricant, the zinc oxide, the dicumyl peroxide, the ACR401, the fatty acid ester and the titanium dioxide into an internal mixer according to the mass fraction of the formula, mixing and stirring, then adding the mixture obtained in the step S101 at the temperature of 80-100 ℃, and carrying out internal mixing for 8-12 minutes through the internal mixer;

step S103, injecting the product obtained in the step S102 into a vacuumized mould cavity for heating, wherein the injection pressure is not less than 65MPa, the injection speed is not less than 200mm/S, and the product is foamed for 3-8 minutes at 135-160 ℃; then heating to 163-190 ℃ for foaming for 5-10 minutes;

and step S104, opening the die at a high speed, and carrying out foaming molding at the die opening speed of not less than 350mm/S to obtain the foamed elastic rotating body.

3. Advantageous effects

Compared with the prior art, the invention has the beneficial effects that:

(1) according to the production formula of the elastic rotating body, the adopted fillers are talcum powder and titanium gypsum with the grain diameter of less than or equal to 200nm, so that the elastic rotating body not only ensures that the specific hardness, the elongation and the strength of the material required by technical indexes meet the requirements of the indexes, but also ensures that the material has lower compression permanent deformation performance and better heat-resistant aging performance; the hole rate of the surface of the elastic rotator is further reduced to about 0.1%, the diameter of the hole is reduced, and the compactness is good;

(2) according to the production formula of the elastic rotator, POE (polyolefin elastomer), an ethylene propylene diene monomer rubber material and an EVA (ethylene-vinyl acetate) material are mixed and refined, and various additives are added, so that the three materials keep self performances and complement each other, the prepared elastic rotator is strong in elasticity, compact in texture after foaming and light in weight, good ageing resistance of the elastic rotator is guaranteed, the elastic rotator is not easy to crack when being impacted, and the service life of the elastic rotator is effectively prolonged;

(3) according to the production formula of the elastic rotator, the adopted crosslinking agent is dicumyl peroxide (DCP), so that the crosslinking reaction generated in the vulcanization process of the ethylene propylene diene monomer is more sufficient, the generation of peroxide vulcanization residues and small molecular compounds is reduced, and the improvement of the performance of the elastic rotator is facilitated;

(4) the preparation method of the elastic rotating body has the advantages that the steps are connected in order, the operation is simple and convenient, the materials of all the components are fully and uniformly mixed in the internal mixer, the temperature and the time are effectively controlled in the process, the elastic rotating body is formed in a one-step foaming mode, the texture is dense, the surface is smooth and mellow, and the impact strength meets the requirement of road safety use.

Drawings

The technical solutions of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for illustrative purposes only and thus do not limit the scope of the present invention. Furthermore, unless otherwise indicated, the drawings are intended to be illustrative of the structural configurations described herein and are not necessarily drawn to scale.

FIG. 1 is a view showing a structure of an elastic rotary body according to the present invention;

fig. 2 is a surface picture of a conventional product after a certain period of use.

Detailed Description

The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which is shown by way of illustration exemplary embodiments in which the invention may be practiced. Although these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it should be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the present invention. The following more detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is presented for purposes of illustration only and not limitation to describe the features and characteristics of the invention, to set forth the best mode of carrying out the invention, and to sufficiently enable one skilled in the art to practice the invention. Accordingly, the scope of the invention is to be limited only by the following claims.

Firstly, the POE, the ethylene propylene diene monomer, the anti-shrinkage agent, the filler, the EVA, the titanium gypsum, the coupling agent, the vegetable oil, the dispersing lubricant, the fatty acid ester, the nano zinc oxide, the crosslinking agent, the foaming agent, the flowing agent and the color master pigment used in the embodiment of the present invention have no special requirements, and the raw materials are all purchased from the market.

The manufacturing formula of the elastic rotator comprises the following specific components in parts by mass: 10-20% of ethylene-octene copolymer (POE); 45-55% of EVA; 10-20% of ethylene propylene diene monomer; an anti-shrinking agent E20-585-10%; 1-2% of talcum powder with the particle size less than or equal to 200 nm; 0.8-1.2% of titanium gypsum with the particle size of less than or equal to 200 nm; 0.1-0.2% of a coupling agent; 0.5-0.8% of vegetable oil; 0.6-1.6% of a dispersing lubricant; 1-2% of nano zinc oxide; 0.7-1.2% of dicumyl peroxide; 2.5-2.8% of ACR401 foaming agent; 1.5-2.5% of fatty acid ester; 1.5-3% of titanium dioxide. The total content of the talcum powder with the grain diameter less than or equal to 200nm and the titanium gypsum with the grain diameter less than or equal to 200nm is not more than 3 percent. The coupling agent is one of silane coupling agent, titanate coupling agent, aluminate coupling agent and aluminum-titanium composite coupling agent. The vegetable oil is one of rapeseed oil, peanut oil, soybean oil, sunflower seed oil and palm oil. The dispersing lubricant is one or more of stearic acid, zinc stearate, calcium stearate, magnesium stearate and low molecular wax.

For the elastic rotating body, because the mass of a single elastic rotating body is 1000-10000 g, even heavier, the injection amount of the raw material needs to reach more than 1000-10000 g, and for the current foaming process, the large foaming injection amount and various uncertain factors existing in the foaming process can cause that the elastic rotating body generates holes inside due to uneven foaming, and the strength is sharply reduced; and the surface is not smooth and round, which greatly influences the beauty of the elastic rotator. Especially, the surface holes of the elastic rotating body are easy to fall into dust, so that the surface of the elastic rotating body is blackened, and the appearance is affected.

It should be noted that the production formula of the elastic rotator of the present invention is a further improvement based on the formula of patent application No. 2017105194257, and is added with 0.8-1.2% of titanium gypsum, 0.1-0.2% of coupling agent and 0.5-0.8% of vegetable oil based on the original formula, wherein the titanium gypsum is used as industrial waste, and the main component of the titanium gypsum is calcium sulfate which is a substance with very stable chemical property and can be filled in the pores of foamed EVA in the form of powder after removing moisture, on one hand, it replaces part of the filler to block the pores, on the other hand, the calcium sulfate loses 2 crystal waters at 163 ℃, the water vapor is beneficial to forming bubbles in EVA during processing, in addition, the calcium sulfate filled in the pores has water absorption, especially, when the calcium sulfate in the surface pores contacts with air, the volume expands after absorbing water, and further, the pores of EVA can be compacted, the titanium gypsum has strong polarity, and is difficult to be uniformly mixed with other substances in the practical use process, and the titanium gypsum can be promoted to be easily mixed by adding the coupling agent. In addition, the titanium gypsum contains trace heavy metal elements such as lead, zinc, copper, cadmium, mercury, arsenic and chromium, and the trace metal elements are harmful to other components of the elastic rotating body, and through a large number of tests and analyses, the harm of the trace metal elements can be reduced by adding the vegetable oil, and the probable reason of the analysis is that in the foaming process, the vegetable oil still exists in a liquid state due to the fact that the temperature is 163-190 ℃ and the volatilization temperature of the vegetable oil is not reached, the vegetable oil can wrap part of the titanium gypsum, so that the trace metal elements cannot contact with other substances and participate in reaction, and a certain lubricating and demoulding effect can be achieved.

In addition, the titanium gypsum is industrial waste generated in the production of titanium dioxide, a small amount of titanium dioxide is also contained, and the titanium dioxide particles can be used for the color master pigment regulation of the elastic rotating body.

In addition, the addition amount of the titanium gypsum is 0.8-1.2%: the addition amount is not more than 1.2 percent, the titanium gypsum has stronger polarity and is not easy to mix, 2 crystal waters are lost due to heat absorption of the titanium gypsum in the foaming process, certain energy is consumed, and the addition amount is not too much from the cost perspective; the addition amount is not easily less than 0.8%, and mainly replaces part of the filler, and when the addition amount is small, the surface holes cannot be sufficiently filled by combining the current foaming weight.

The coupling agent is added in an amount of 0.1-0.2%, and has the main function of combining with the titanium gypsum to enable the titanium gypsum to be easily mixed, and the addition amount of the coupling agent is not easy to exceed 0.2%, otherwise, the foaming process is influenced.

The addition amount of the vegetable oil is 0.5-0.8%, the addition amount of the vegetable oil is not easy to exceed 0.8%, certain components of the vegetable oil are easy to volatilize, the content is too high, nodulation of a mold can be caused, and the surface of the elastic rotating body is not smooth.

The production formula of the elastic rotating body disclosed by the invention is based on the patent formula with the patent application number of 2017105194257, and on the premise of keeping or not reducing the performance of the original elastic rotating body as much as possible, the surface compactness is better, and the application prospect is better.

Example 1

The formula for manufacturing the elastic rotating body comprises the following specific components in parts by mass: ethylene-octene copolymer (POE) 12.5%; EVA 55 percent; 10% of ethylene propylene diene monomer; antishrinking agent E20-588%; 2 percent of talcum powder with the particle size less than or equal to 200 nm; titanium gypsum with the grain diameter less than or equal to 200nm is 0.8 percent; 0.1% of a coupling agent; 0.5% of vegetable oil; 1.6 percent of dispersing lubricant; 1.5 percent of zinc oxide; 1.2 percent of dicumyl peroxide; 2.8% of ACR401 foaming agent; 1.5% of fatty acid ester; 2.5 percent of titanium dioxide. The total content of the talcum powder with the grain diameter less than or equal to 200nm and the titanium gypsum with the grain diameter less than or equal to 200nm is 2.8 percent. The coupling agent is a silane coupling agent; the vegetable oil is rapeseed oil; the dispersing lubricant is stearic acid.

The embodiment also provides a preparation method of the elastic rotating body, which comprises the following specific steps:

step S101, uniformly mixing titanium gypsum, a silane coupling agent and rapeseed oil according to the mass fraction of the formula;

step S102, adding the ethylene-octene copolymer, the titanium gypsum, the ethylene propylene diene monomer, the E20-58, the talcum powder, the EVA, the stearic acid, the zinc oxide, the dicumyl peroxide, the ACR401, the fatty acid ester and the titanium dioxide into an internal mixer according to the mass fraction of the formula, mixing and stirring, then adding the mixture obtained in the step S101 at the temperature of 100 ℃, and carrying out internal mixing for 12 minutes through the internal mixer;

step S103, injecting the product obtained in the step S102 into a vacuumized mould cavity for heating, wherein the injection pressure is not less than 65MPa, the injection speed is not less than 200mm/S, and the product is foamed for 8 minutes at 160 ℃; then raising the temperature to 163 ℃ for foaming for 5 minutes;

Example 2

This example corresponds essentially to example 1, with the specific component formulations shown in Table 1.

The formula for manufacturing the elastic rotating body comprises the following specific components in parts by mass: ethylene-octene copolymer (POE) 15%; 50% of EVA; 16.9 percent of ethylene propylene diene monomer; antishrinking agent E20-585%; 1% of talcum powder with the particle size less than or equal to 200 nm; 1% of titanium gypsum; 0.15% of a coupling agent; 0.65% of vegetable oil; 1% of dispersed lubricant; 1.8 percent of zinc oxide; dicumyl peroxide 0.8%; 2.7% of ACR401 foaming agent; 2% of fatty acid ester; 2 percent of titanium dioxide. The total content of the talcum powder and the titanium gypsum with the grain diameter less than or equal to 200nm is 2 percent. The coupling agent is a titanate coupling agent; the vegetable oil is palm oil; the dispersing lubricant is a low molecular wax.

step S101, uniformly mixing titanium gypsum, a titanate coupling agent and palm oil according to the mass fraction of a formula;

step S102, adding the ethylene-octene copolymer, the titanium gypsum, the ethylene propylene diene monomer, the E20-58, the talcum powder, the EVA, the low molecular wax, the zinc oxide, the dicumyl peroxide, the ACR401, the fatty acid ester and the titanium dioxide into an internal mixer according to the mass fraction of the formula, mixing and stirring, then adding the mixture obtained in the step S101 at the temperature of 80 ℃, and carrying out internal mixing for 8 minutes through the internal mixer;

step S103, injecting the product obtained in the step S102 into a vacuumized mould cavity for heating, wherein the injection pressure is not less than 65MPa, the injection speed is not less than 200mm/S, and foaming is carried out for 3 minutes at 135 ℃; then raising the temperature to 190 ℃ for foaming for 10 minutes;

Example 3

This example is essentially identical to example 1, with the specific component formulations shown in Table 2.

The formula for manufacturing the elastic rotating body comprises the following specific components in parts by mass: ethylene-octene copolymer (POE) 20%; 45% of EVA; 13.2 percent of ethylene propylene diene monomer; antishrinking agent E20-587%; 1.5 percent of talcum powder with the grain diameter less than or equal to 200 nm; 1.2 percent of titanium gypsum; 0.2% of a coupling agent; 0.8% of vegetable oil; 1.2% of a dispersing lubricant; 2% of zinc oxide; 1% of dicumyl peroxide; 2.6% of ACR401 foaming agent; 2.5% of fatty acid ester; 1.8 percent of titanium dioxide. The total content of the talcum powder and the titanium gypsum with the grain diameter less than or equal to 200nm is 2.7 percent. The coupling agent is a titanate coupling agent; the vegetable oil is rapeseed oil; the dispersing lubricant is zinc stearate.

step S101, uniformly mixing titanium gypsum, a titanate coupling agent and rapeseed oil according to the mass fraction of the formula;

step S102, adding the ethylene-octene copolymer, the titanium gypsum, the ethylene propylene diene monomer, the E20-58, the talcum powder, the EVA, the zinc stearate, the zinc oxide, the dicumyl peroxide, the ACR401, the fatty acid ester and the titanium dioxide into an internal mixer according to the mass fraction of the formula, mixing and stirring, then adding the mixture obtained in the step S101 at the temperature of 90 ℃, and carrying out internal mixing for 12 minutes through the internal mixer;

step S103, injecting the product obtained in the step S102 into a vacuumized mould cavity for heating, wherein the injection pressure is not less than 65MPa, the injection speed is not less than 200mm/S, and foaming is carried out for 5 minutes at 150 ℃; then raising the temperature to 180 ℃ for foaming for 8 minutes;

Example 4

The formula for manufacturing the elastic rotating body comprises the following specific components in parts by mass: ethylene-octene copolymer (POE) 10%; 53 percent of EVA; 18.5 percent of ethylene propylene diene monomer; antishrinking agent E20-586%; 1% of talcum powder with the particle size less than or equal to 200 nm; 0.8 percent of titanium gypsum; 0.1% of a coupling agent; 0.5% of vegetable oil; 0.8% of dispersing lubricant; 1% of zinc oxide; dicumyl peroxide 0.7%; 2.5% of ACR401 foaming agent; 2.1% of fatty acid ester; 3 percent of titanium dioxide. The total content of the talcum powder and the titanium gypsum with the grain diameter less than or equal to 200nm is 1.8 percent. The coupling agent is an aluminum-titanium composite coupling agent; the vegetable oil is sunflower seed oil; the dispersing lubricant is calcium stearate.

step S101, uniformly mixing titanium gypsum, an aluminum-titanium composite coupling agent and sunflower seed oil according to the mass fraction of a formula;

step S102, adding the ethylene-octene copolymer, the titanium gypsum, the ethylene propylene diene monomer, the E20-58, the talcum powder, the EVA, the calcium stearate, the zinc oxide, the dicumyl peroxide, the ACR401, the fatty acid ester and the titanium dioxide into an internal mixer according to the mass fraction of the formula, mixing and stirring, then adding the mixture obtained in the step S101 at the temperature of 100 ℃, and carrying out internal mixing for 10 minutes through the internal mixer;

step S103, injecting the product obtained in the step S102 into a vacuumized mould cavity for heating, wherein the injection pressure is not less than 65MPa, the injection speed is not less than 200mm/S, and foaming is carried out for 3 minutes at 155 ℃; then raising the temperature to 175 ℃ for foaming for 5 minutes;

Example 5

The formula for manufacturing the elastic rotating body comprises the following specific components in parts by mass: ethylene-octene copolymer (POE) 14%; 50% of EVA; 17% of ethylene propylene diene monomer; antishrinking agent E20-586%; 2 percent of talcum powder with the particle size less than or equal to 200 nm; 1% of titanium gypsum; 0.1% of a coupling agent; 0.6 percent of vegetable oil; 0.8% of dispersing lubricant; 1.5 percent of zinc oxide; 1% of dicumyl peroxide; 2.7% of ACR401 foaming agent; 1.8% of fatty acid ester; 1.5 percent of titanium dioxide. The total content of the talcum powder and the titanium gypsum with the grain diameter less than or equal to 200nm is not more than 3 percent. The coupling agent is an aluminate coupling agent; the vegetable oil is soybean oil; the dispersing lubricant is stearic acid.

step S101, uniformly mixing titanium gypsum, an aluminate coupling agent and soybean oil according to the mass fraction of a formula;

step S103, injecting the product obtained in the step S102 into a vacuumized mould cavity for heating, wherein the injection pressure is not less than 65MPa, the injection speed is not less than 200mm/S, and the product is foamed for 8 minutes at 135 ℃; then raising the temperature to 165 ℃ for foaming for 8 minutes;

Example 6

The formula for manufacturing the elastic rotating body comprises the following specific components in parts by mass: ethylene-octene copolymer (POE) 15%; 49% of EVA; 16% of ethylene propylene diene monomer; antishrinking agent E20-587%; 1.5 percent of talcum powder with the grain diameter less than or equal to 200 nm; 1% of titanium gypsum; 0.1% of a coupling agent; 0.6 percent of vegetable oil; 0.9% of dispersing lubricant; 1.5 percent of zinc oxide; 1% of dicumyl peroxide; 2.8% of ACR401 foaming agent; 1.5% of fatty acid ester; 2.1 percent of titanium dioxide. The total content of the talcum powder and the titanium gypsum with the grain diameter less than or equal to 200nm is 2.5 percent. The coupling agent is a titanate coupling agent; the vegetable oil is peanut oil; the dispersing lubricant is magnesium stearate.

step S101, uniformly mixing titanium gypsum, a titanate coupling agent and peanut oil according to the mass fraction of a formula;

step S102, adding the ethylene-octene copolymer, the titanium gypsum, the ethylene propylene diene monomer, the E20-58, the talcum powder, the EVA, the magnesium stearate, the zinc oxide, the dicumyl peroxide, the ACR401, the fatty acid ester and the titanium dioxide into an internal mixer according to the mass fraction of the formula, mixing and stirring, then adding the mixture obtained in the step S101 at the temperature of 85 ℃, and carrying out internal mixing for 9 minutes through the internal mixer;

step S103, injecting the product obtained in the step S102 into a vacuumized mould cavity for heating, wherein the injection pressure is not less than 65MPa, the injection speed is not less than 200mm/S, and the product is foamed for 6 minutes at 140 ℃; then heating to 180 ℃ for foaming for 5 minutes;

Table 1 mass fraction (%) -of each component of examples 1 to 6

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. The formula for manufacturing the elastic rotating body is characterized by comprising the following specific components in parts by mass:

A) 10% to less than 20% of an ethylene-octene copolymer;

B) 45% to less than 55% EVA;

C) 10% to less than 20% of ethylene propylene diene monomer;

D) and an addition aid comprising: a) anti-shrinkage agent: 5% to less than 10% of E20-58; b) filling agent: comprises 1 to less than 2 percent of talcum powder with the grain diameter less than or equal to 200nm and 0.8 to less than 1.2 percent of titanium gypsum with the grain diameter less than or equal to 200 nm; c) 0.6% to less than 1.6% of a dispersing lubricant; d) a crosslinking agent: 0.7% to less than 1.2% dicumyl peroxide; e) foaming agent: 2.5% to less than 2.8% ACR 401; f) a flow agent: 1.5% to less than 2.5% fatty acid ester, 0.5% to less than 0.8% vegetable oil; g) color master pigment: 1.5% to less than 3% titanium dioxide; h) 0.1% to less than 0.2% of a coupling agent; i) forming agent: 1 to less than 2 percent of nano zinc oxide.

2. The formulation for producing an elastic rotary body according to claim 1, wherein the total content of the talc powder having a particle size of 200nm or less and the titanium gypsum having a particle size of 200nm or less is not more than 3%.

3. The formulation for manufacturing an elastic rotator according to claim 2, wherein the coupling agent is one of a silane coupling agent, a titanate coupling agent, an aluminate coupling agent and an aluminum-titanium composite coupling agent.

4. The formulation for making an elastic rotator according to claim 3, wherein the vegetable oil is one of rapeseed oil, peanut oil, soybean oil, sunflower oil and palm oil.

5. The formulation for producing an elastic rotary body according to claim 4, wherein the dispersing lubricant is one or more of stearic acid, zinc stearate, calcium stearate, magnesium stearate, and low-molecular wax.

6. A method for producing an elastic rotating body, comprising the steps of, according to the formulation of any one of claims 1 to 5:

step S101, uniformly mixing titanium gypsum, a coupling agent and vegetable oil according to the mass fraction of the formula of any one of claims 1 to 5;