CN111499946B

CN111499946B - Male boots and preparation method thereof

Info

Publication number: CN111499946B
Application number: CN202010327628.8A
Authority: CN
Inventors: 林小海; 吴建旺
Original assignee: Wenzhou Yisili Shoe Industry Co ltd
Current assignee: Wenzhou Yisili Shoe Industry Co ltd
Priority date: 2020-04-23
Filing date: 2020-04-23
Publication date: 2022-06-17
Anticipated expiration: 2040-04-23
Also published as: CN111499946A

Abstract

The invention relates to the technical field of shoes, and discloses a pair of men's boots, which comprise boot uppers and soles, wherein the soles are prepared from the following components in parts by weight: 40-60 parts of chloroprene rubber; 20-25 parts of EVA resin; 5-6 parts of 2-dodecyl acrylate; 15-30 parts of triethanolamine; 2-3 parts of an anti-aging agent. The invention has the following advantages and effects: the chloroprene rubber and the EVA resin are mixed and banburied, so that on one hand, the shoe sole can obtain good physical and mechanical properties, oil resistance, heat resistance, acid and alkali resistance and the like, and on the other hand, the elasticity, flexibility, glossiness, air permeability and the like of the shoe sole can be improved, and the shoe sole with excellent overall performance is obtained; the long-chain alkyl ester and the EVA resin molecular chain are interpenetrated and intertwined, so that the shock resistance of the sole is improved.

Description

Male boots and preparation method thereof

Technical Field

The invention relates to the technical field of shoes, in particular to a pair of men's boots and a preparation method thereof.

Background

The boot is a shoe with a slightly cylindrical upper and a height above the ankle bone. The boots can be suitable for men and women to wear, and have a plurality of types, and can be divided into a plurality of types according to different styles, fabrics and heights. Can be divided into tip boots, round-head boots, small tip boots and the like according to the styles; can be divided into leather boots, cloth boots and felt boots according to the fabric; the height of the saddle can be classified into a high boot, a middle boot or a low boot.

Currently, patent publication No. CN105725348A discloses a boot including an upper portion that wraps the instep and ankle of a wearer and the upper portion of the ankle, and uses a fabric having waterproof properties; an upper sole portion formed along an edge of the upper portion and coupled thereto; and the antiskid device is characterized in that the antiskid device is formed by a material with a higher friction coefficient and a pattern with a certain shape compared with the rest parts along the front and back parts formed on the bottom surface of the upper sole.

The above prior art solutions have the following drawbacks: the existing boots pay more attention to the anti-skid performance, but for men boots, the impact resistance of the boot sole of the boot directly influences the service life of the boot, and the boots obviously cannot meet the requirement of better impact resistance, so the improvement is still needed.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide the boots for men, which have better impact resistance, meet the use requirements of the boots for men and prolong the service life of the boots.

In order to achieve the purpose, the invention provides the following technical scheme:

the male boots comprise boot uppers and soles, wherein the soles are prepared from the following components in parts by weight:

40-60 parts of chloroprene rubber;

20-25 parts of EVA resin;

5-6 parts of 2-dodecyl acrylate;

15-30 parts of triethanolamine;

2-3 parts of an anti-aging agent.

By adopting the technical scheme, the chloroprene rubber and the EVA resin are mixed and banburied, so that on one hand, the shoe sole can obtain good physical and mechanical properties, such as oil resistance, heat resistance, acid and alkali resistance, and the like, and on the other hand, the elasticity, flexibility, glossiness, air permeability and the like of the shoe sole can be improved, and the shoe sole with excellent overall performance can be obtained; the EVA resin has viscosity at high temperature, the long-chain alkyl ester and the EVA resin generate synergistic action, and an interpenetrating network formed by interpenetrating and intertwining the long-chain alkyl ester and the EVA resin molecular chain plays a role in dispersing stress, prevents crack expansion after long-chain alkane is stressed, and simultaneously prevents viscosity flowing of the EVA resin, so that the tensile strength and the elongation at break of the sole can be greatly improved, namely the impact resistance of the sole is improved, and the EVA resin has plasticizing and plasticizing promoting functions; triethanolamine is added as an organic active agent, and the affinity and the interface bonding force among the components are improved through the polarity of alcohol amine functional groups, so that the components are uniformly dispersed and mixed, and the impact resistance and the overall performance of the sole are improved.

The present invention in a preferred example may be further configured to: the sole also comprises 6-8 parts of 4-methyl-3-pentene-2-ketone by weight.

By adopting the technical scheme, the 4-methyl-3 pentene-2-ketone contains flexible carbon-carbon double bonds and carbonyl groups with higher activity, so that the 4-methyl-3 pentene-2-ketone is favorably bonded to a compact EVA resin crosslinking network, and a compact and loose alternate two-phase network structure is formed in the curing process, thereby destroying the uniformity of the curing network, being favorable for stress dispersion, improving the toughness of the sole and improving the impact resistance.

The present invention in a preferred example may be further configured to: the sole also comprises 0.5 to 0.8 part of cobalt naphthenate by weight.

By adopting the technical scheme, the addition of the cobalt naphthenate can promote the reaction of the 4-methyl-3-pentene-2-ketone and the EVA resin, and on the other hand, the cobalt naphthenate can also be used as a curing agent for reinforcing the resin, so that the time for forming the sole is shortened, and the mechanical property of the sole is improved.

The present invention in a preferred example may be further configured to: according to the weight portion, the sole also comprises silicon carbide, and the silicon carbide accounts for 2-3% of the chloroprene rubber.

By adopting the technical scheme, silicon carbide is introduced into the sole component, and the second-phase dispersed particles play a toughening and reinforcing role, so that the fracture toughness of the material is remarkably improved; and experiments prove that when the silicon carbide accounts for 2-3% of the chloroprene rubber, the effect of improving the fracture toughness is better.

The present invention in a preferred example may be further configured to: the sole also comprises 1-2 parts of polybutyl acrylate by weight.

By adopting the technical scheme, on one hand, the dispersing uniformity of the silicon carbide in the components such as the chloroprene rubber is improved by adding and mixing the polybutyl acrylate and the silicon carbide, so that the components are mixed more uniformly, the toughening effect of the silicon carbide on the sole is more uniform and stable, and the impact resistance and the integral mechanical property of the sole are improved; on the other hand, the polybutyl acrylate has better cold resistance, can effectively make up for the performance defect of slightly poor cold resistance of the chloroprene rubber, and improves the overall performance of the sole.

The present invention in a preferred example may be further configured to: the sole also comprises 0.5 to 0.6 part of ricinoleic acid alkanolamide by weight.

By adopting the technical scheme, the ricinoleic acid alkanolamide is added and fully mixed with the silicon carbide, and the ricinoleic acid alkanolamide is easy to dissociate to generate anions and has positive charges, so that the anions are adsorbed on the surface of the silicon carbide, the surface of the silicon carbide is organized, the aim of easily realizing the mixing of the silicon carbide and the polybutyl acrylate is fulfilled, and the silicon carbide is favorably and uniformly dispersed in each component of the sole.

The present invention in a preferred example may be further configured to: the anti-aging agent is an anti-aging agent A.

By adopting the technical scheme, the anti-aging agent A has better using effect when matched with chloroprene rubber, and is used for preventing or inhibiting factors such as oxygen, heat, light, ozone, mechanical stress, heavy metal ions and the like from damaging the performance of the sole, thereby achieving the purposes of prolonging the storage and service life of the sole.

The second purpose of the invention is to provide a preparation method of male boots, which comprises the following steps:

s1, mixing chloroprene rubber, EVA resin, 2-dodecyl acrylate and triethanolamine, mixing in an internal mixing chamber at the temperature of 120-140 ℃, adding an anti-aging agent, injecting the mixture into a mold for injection molding, and cooling to obtain a sole;

and S2, sewing and fixing the sole obtained in the step S1 and the vamp, and shaping and finishing to obtain the male boots.

By adopting the technical scheme, the male boots with better impact resistance are prepared.

The present invention in a preferred example may be further configured to: in the S1, 4-methyl-3-pentene-2-one can be added before the anti-aging agent is added.

By adopting the technical scheme, the 4-methyl-3 pentene-2-ketone contains flexible carbon-carbon double bonds, can be bonded into a compact EVA resin crosslinking network to form a compact and loose alternate two-phase network structure, is favorable for stress dispersion, improves the toughness of the sole and further improves the impact resistance.

The present invention in a preferred example may be further configured to: after the addition of 4-methyl-3-penten-2-one, the silicon carbide and ricinoleic acid alkanolamide are first mixed homogeneously, polybutyl acrylate is then added, and the resulting mixture is then mixed with chloroprene rubber, etc.

By adopting the technical scheme, the silicon carbide serves as second-phase dispersion particles to toughen and reinforce the chloroprene rubber, so that the fracture toughness of the material is remarkably improved, the polybutyl acrylate and the silicon carbide are mixed, the dispersion uniformity of the silicon carbide in components such as chloroprene rubber is improved, and the performance defect of slightly poor cold resistance of the chloroprene rubber is overcome; the ricinoleic acid alkanolamide is fully mixed with the silicon carbide, so that the surface of the silicon carbide is organized, and the mixing of the silicon carbide and the polybutyl acrylate is easier to realize.

In summary, the invention includes at least one of the following beneficial technical effects:

1. the chloroprene rubber and the EVA resin are mixed and banburied, so that on one hand, the shoe sole can obtain good physical and mechanical properties, oil resistance, heat resistance, acid and alkali resistance and the like, and on the other hand, the elasticity, flexibility, glossiness, air permeability and the like of the shoe sole can be improved, and the shoe sole with excellent overall performance is obtained; the long-chain alkyl ester and the EVA resin molecular chain are interpenetrated and intertwined, so that the shock resistance of the sole is improved;

2. in the presence of cobalt naphthenate, the 4-methyl-3-pentene-2-ketone containing flexible carbon-carbon double bonds and carbonyl groups with higher activity can be bonded into a compact EVA resin crosslinking network, and a compact and loose alternate two-phase network structure is formed in the curing process, so that the toughness of the sole can be improved, and the impact resistance is improved;

3. the ricinoleic acid alkanolamide is added and fully mixed with the silicon carbide, so that the surface of the silicon carbide is organized, the mixing of the silicon carbide and the poly butyl acrylate is easier to realize, the poly butyl acrylate and the silicon carbide are mixed, the dispersion uniformity of the silicon carbide in the chloroprene rubber and other components is improved, the mixing of all the components is more uniform, the toughening effect of the silicon carbide on the sole is more uniform and stable, and the impact resistance and the integral mechanical property of the sole are improved.

Detailed Description

The present invention will be described in further detail below.

In the invention, the chloroprene rubber is purchased from Sichuan Haitong chemical company Limited; EVA resin is purchased from double chemical industry raw materials Co., Ltd of Dongyang city; the antioxidant A is purchased from Shanghai Shuangguan chemical Co., Ltd.

Examples

Example 1

The invention discloses a preparation method of male boots, which comprises the following steps:

The contents of the components are shown in table 1 below.

Example 2

The contents of the components are shown in table 1 below.

Example 3

The contents of the components are shown in table 1 below.

Comparative example

Comparative example 1

The difference from example 1 is that only chloroprene rubber and an antioxidant were added.

Comparative example 2

The difference from example 1 is that the EVA resin was replaced with an epoxy resin, and the contents of the respective components are shown in table 2 below.

Comparative example 3

The difference from example 1 is that dodecyl acrylate was replaced with acrylate and the contents of the respective components are shown in table 2 below.

Comparative example 4

The difference from example 1 is that 4-methyl-3-penten-2-one is replaced by bishydroxypolyethylene glycol, and the contents of the components are shown in Table 2 below.

Comparative example 5

The difference from example 1 is that silicon carbide makes up 6% of the neoprene rubber, and the contents of each component are shown in table 2 below.

Comparative example 6

The difference from example 1 is that silicon carbide is 0.6% of the chloroprene rubber, and the contents of the components are shown in table 2 below.

Comparative example 7

The difference from example 1 is that silicon carbide is replaced by mica powder, and the contents of the components are shown in table 2 below.

Comparative example 8

The difference from example 1 is that ricinoleic acid alkanolamide is replaced with glyceryl monostearate and the component contents are shown in table 2 below.

TABLE 1 ingredient content Table for each example

	Example 1	Example 2	Example 3
				Neoprene	40	60	52
EVA resin	20	25	23
				2-dodecyl acrylate	5	6	5
Triethanolamine	15	30	24
				Anti-aging agent	2	3	3
4-methyl-3-penten-2-one	6	8	7
				Cobalt naphthenate	0.5	0.8	0.6
Silicon carbide	0.8	1.8	1.3
				Polybutyl acrylate	1	2	1
Ricinoleic acid alkanolamides	0.5	0.6	0.5

TABLE 2 ingredient content in each proportion

	Comparative example 1	Comparative example 2	Comparative example 3	Comparative example 4	Comparative example 5	Comparative example 6	Comparative example 7	Comparative example 8
									Neoprene	40	40	40	40	40	40	40	40
EVA resin/epoxy resin	/	20	20	20	20	20	20	20
									2-dodecyl acrylate/acrylate	/	5	5	5	5	5	5	5
Triethanolamine	/	15	15	15	15	15	15	15
									Anti-aging agent	2	2	2	2	2	2	2	2
4-methyl-3-penten-2-one/dihydroxypolyethylene glycol	/	6	6	6	6	6	6	6
									Cobalt naphthenate	/	0.5	0.5	0.5	0.5	0.5	0.5	0.5
Silicon carbide	/	0.8	0.8	0.8	2.4	0.24	0.8	0.8
									Polybutyl acrylate	/	1	1	1	1	1	1	1
Ricinoleic acid alkanolamide/glyceryl monostearate	/	0.5	0.5	0.5	0.5	0.5	0.5	0.5

Performance test

Adopting an AG-10TA electronic universal material testing machine to measure the tensile strength and the elongation at break according to GB/T1040-92, and representing the impact resistance by the tensile strength and the elongation at break; the testing temperature is room temperature, and the stretching speed is 5.0 mm/min; the greater the tensile strength and elongation at break, the better the impact resistance; the test results are shown in table 3 below.

TABLE 3 mechanical Property test results of examples and comparative examples

	Tensile strength/MPa	Elongation at break/%
			Example 1	17.4	360
Example 2	19.3	383
			Example 3	18.6	368
Comparative example 1	9.8	276
			Comparative example 2	14.9	324
Comparative example 3	15.3	331
			Comparative example 4	14.2	310
Comparative example 5	15.8	338
			Comparative example 6	14.7	319
Comparative example 7	15.9	342
			Comparative example 8	14.9	321

In summary, the following conclusions can be drawn:

1. as can be seen from the comparison of example 1 and comparative example 1, the components of the present invention can significantly improve the impact resistance of chloroprene rubber.

2. As can be seen from the comparison of example 1 with comparative examples 2 to 3, the corresponding addition of dodecyl acrylate and EVA resin is advantageous in improving the impact resistance of the shoe sole.

3. As is apparent from the comparison of example 1 and comparative examples 2 to 4, the simultaneous addition of dodecyl acrylate, EVA resin and 4-methyl-3-penten-2-one improves the impact resistance of shoe soles.

4. As can be seen from the comparison of example 1 with comparative examples 5 to 7, the addition of silicon carbide has an effect of improving the impact resistance of the chloroprene rubber, and the effect is better when the silicon carbide accounts for 2 to 3% of the chloroprene rubber.

5. As is clear from the comparison between example 1 and comparative examples 7 to 8, the addition of ricinoleic acid alkanolamides and silicon carbide has a synergistic effect and improves the impact resistance of the shoe sole.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a boots for men, includes vamp and sole, its characterized in that: the sole is prepared from the following components in parts by weight:

40-60 parts of chloroprene rubber;

20-25 parts of EVA resin;

5-6 parts of 2-dodecyl acrylate;

15-30 parts of triethanolamine;

2-3 parts of an anti-aging agent;

6-8 parts of 4-methyl-3-penten-2-one;

0.5-0.8 parts of cobalt naphthenate;

silicon carbide, wherein the silicon carbide accounts for 2-3% of the chloroprene rubber;

1-2 parts of polybutyl acrylate;

0.5-0.6 part of ricinoleic acid alkanolamide borate.

2. The male boot of claim 1, wherein: the anti-aging agent is an anti-aging agent A.

3. The method of preparing a male boot according to any one of claims 1-2, wherein: the method comprises the following steps:

s1, mixing chloroprene rubber, EVA resin, 2-dodecyl acrylate and triethanolamine, mixing in an internal mixing chamber at the temperature of 120-140 ℃ to obtain mixed rubber, adding an anti-aging agent, injecting the mixed rubber into a mold for injection molding, and cooling to obtain a sole;

4. The method of claim 3, wherein the boot for men comprises: in the S1, 4-methyl-3-pentene-2-ketone and cobalt naphthenate are added before the anti-aging agent is added.

5. The method of claim 4, wherein the boot is prepared by: after adding 4-methyl-3-penten-2-one, the silicon carbide and ricinoleic acid alkanolamide borate are firstly mixed evenly, and then the polybutyl acrylate is added and mixed with the rubber compound.