CN106398180A

CN106398180A - Rubbing-preventive shoe cushion and production method thereof

Info

Publication number: CN106398180A
Application number: CN201610812827.1A
Authority: CN
Inventors: 卢晔
Original assignee: Chengdu Jiushidu Industrial Product Design Co Ltd
Current assignee: Chengdu Jiushidu Industrial Product Design Co Ltd
Priority date: 2016-09-09
Filing date: 2016-09-09
Publication date: 2017-02-15

Abstract

The invention discloses a rubbing-preventive shoe cushion. The rubbing-preventive shoe cushion comprises a polyurethane body and is characterized in that a PE film layer is adhered one surface of the polyurethane body, a polytetrafluoroethylene layer is sprayed on the other surface of the polyurethane body, and a multi-spandex layer is adhered to the other surface of the polytetrafluoroethylene layer which is treated by a surface treating agent, wherein the polyurethane body comprises, by weight, 90 parts of TPU resin, 5-8 parts of wax powder, 10-20 parts of filler, 8-11 parts of cotton fiber, 1-3 parts of coupling agent, 0.5-1 part of antioxidant, 0.5-1 part of flatting agent and 0.2-0.5 part of dispersing agent. The rubbing-preventive shoe cushion has the advantages that through optimization of a material formula and a shoe cushion structure, the shoe cushion can keep a low friction coefficient and a small plastic deformation rate for a long term and cannot rub the skin of a user even after being soaked in water, thereby being high in comfort and longer in service cycle; free of toxic substances and expensive raw materials, the rubbing-preventive shoe cushion is low in manufacturing cost, high in adaptability to the market and easy for industrial production.

Description

A kind of Foot-rub-preventive footwear patch and preparation method thereof

Technical field

The present invention relates to shoemaking accessory field, particularly to a kind of Foot-rub-preventive footwear patch and preparation method thereof.

Background technology

With the raising of people's living standard, higher requirement be there has also been to the comfort level of the shoes being through on foot, due to Shoes are all in high volume that identical technique is made, and the foot shape of people goes to vary in a large number according to same dimensions, special It is not the high-heel shoes popular for modern society and sport shoess, usually can grind because heel foot has larger relatively Multiple level Foot phenomenon, this not only can cause scratch painful to user, also can cause infection because of broken skin and then affect healthy.

In order to solve the above problems, present shoes store has footwear sold, such as footwear patch mostly, in the footwear patch of existing sale In, there are sole footwear patch followed by footwear patch, side footwear patch etc., material also selects silica gel or sponge mostly, to adapt to the comfortable of people Sense, but existing silica gel shoes patch and sponge footwear patch all have following defect：1. after getting wet, its surface can become smooth to silica gel Full, when the smooth surface of foot and silica gel contacts, its contact area significantly increases, and leads to skin to produce negative pressure with Silica Surface And so that silica gel is close on skin and be not readily separated, and then so that the frictional strength between skin and silica gel is significantly increased, skin is subject to Larger frictional strength and broken skin, after sponge sucks in water, deformation resistance becomes big, when there is sliding friction with skin, sponge surface shape Become reaction slack-off, and then indirectly increase frictional force, skin is easily by friction broken skin；2. silica gel and sponge meeting in life-time service There is plastic deformation, after plastic deformation becomes larger, silica gel shoes patch and sponge footwear patch will be scrapped because size is not inconsistent, because This, the usage cycles of existing footwear patch are shorter, and the wasting of resources is more serious.

Content of the invention

The goal of the invention of the present invention is：For above-mentioned problem, even if also will not mill pin after providing one kind to get wet Foot-rub-preventive footwear patch, paste structure by optimizing material prescription and footwear, make the relatively low coefficient of friction of the long-term holding that footwear paste and relatively Little plastic deformation rate, in the case of ensureing that footwear patch has good toughness, stability and easy manufacture, extends the use of footwear patch In the cycle, reduce the waste of resource.

The technical solution used in the present invention is as follows：A kind of Foot-rub-preventive footwear patch, including polyurethane body it is characterised in that gathering The one side of urethane body posts PE film, and the another side of polyurethane body sprays one layer of polytetrafluoroethylene floor, politef After the another side surface treated agent of layer is processed, one layer of mutispandex of bonding, described polyurethane body is by the material of following weight portion Composition：90 parts of TPU resin, wax powder 5-8 part, filler 10-20 part, cotton fiber 8-11 part, coupling agent 1-3 part, antioxidant 0.5-1 Part, levelling agent 0.5-1 part, dispersant 0.2-0.5 part.

In said structure, PE film is mainly used to protect bonding plane, when needing to paste using footwear, tears PE film, by bonding plane It is affixed on vamp；The polyurethane body being obtained after compounding improvement has that the rate of plastic deformation is little, ageing resistace is excellent, Toughness is strong, anti-wear performance is excellent and the features such as long service life, so that footwear is pasted and has excellent combination property, in order to solve polyurethane The problem of mill pin after getting wet, scribbles one layer of polytetrafluoroethylene floor in the another side of polyurethane body, has and have in politef Extremely low coefficient of friction and low temperature avirulence, are highly suitable for contacting to reduce friction with skin, further, in order to strengthen footwear Patch business is attractive in appearance and comfort level, polytetrafluoroethylene floor has overlayed mutispandex so that footwear patch to have preferably business attractive in appearance It is worth, improve the market adaptability of footwear patch.

Further, in order that the polyurethane shoe patch finally giving possesses more preferable combination property, major ingredient TPU resin is improvement TPU resin afterwards, the TPU resin after described improvement is obtained by following steps：

Step 1, mass ratio is the oleum lini of 26% dimethicone, 38.5% TPR and 6% is placed in turbine stirrer and stirs Mix mix homogeneously, and mixed liquor be heated to 100 DEG C, the organic siliconresin that mass ratio is 7% is heated to 160 DEG C to after melt, It is added in mixed liquor, the temperature keeping mixed liquor, at 100 DEG C, stirs 3h with the mixing speed of 600rad/min, mixed Liquid；

Step 2, mass ratio is 10.8% Pulvis Talci, 3.2% zinc stearate, 1.5% triethylamine nertralizer, 0.5% have Machine tin catalyst and 4.3% erucyl amide be uniformly mixed in agitator after add step 1 mixed liquor in stirring mixing Uniformly, then the mixed liquor after mix homogeneously is delivered to banburying 8h in banbury, be eventually adding the boric acid that mass ratio is 2.2% and allow Its coagulation forming.

In TPU resin after above-mentioned improvement, zinc stearate is as oily lubricant, mixed in order to reduce other components Viscosity, increases mobility during preparation, make each component in banbury can rapidly mixed smelting, beneficial to the TPU tree after improvement The formation of fat；Organic siliconresin has the characteristics such as excellent heat-resisting, cold-resistant, hydrophobic, can increase the stability of TPU resin, make TPU Resin possesses good cementability and toughness, and anti-aging effect is good, and the combination property of TPU resin can be greatly improved；Pulvis Talci As conventional inorganic filler, because it has the advantages that ultra-fine grain, can preferably merge with other dispensings, certain well The hardness of TPU resin can be improved on degree, reduce the skin-friction coefficient Manufacturing cost of TPU resin, finally make to obtain Improvement after TPU resin there is excellent toughness and stability, processability is good, be easy to later stage footwear patch manufacture.

Further, in order to improve processing characteristics and reduce production cost, filler is titanium dioxide, aerosil and silicone Powder is by weight for 1:4:1 mixture being mixed, wherein titanium dioxide, as conventional reinforcing agent, are mainly used to strengthen polyurethane The anti ageing property of body, also has certain sterilizing function simultaneously；Aerosil is mainly used to improve polyurethane body Tensile strength, tearing toughness and anti-wear performance, make polyurethane body be not susceptible to plastic deformation, and more wear-resisting.

Further, it is obtained after the white cotton linter fiber dispersion that cotton fiber is obtained after roller gin preliminary working by white cotton, The length of cotton fiber is 3-7mm.The use of cotton fiber can not only be greatly improved the toughness of polyurethane body, wearability and anti-tear Fragility, moreover it is possible to make polyurethane body keep good elasticity in life-time service, is greatly reduced the rate of plastic deformation of polyurethane, makes Polyurethane body is capable of the stability of holding structure and size for a long time, and meanwhile, cotton fiber belongs to nontoxic it is easy to Organic substance is compatible Organic cellulose, can be dispersed in well in polyurethane body, manufacture that processing is simple, input cost is low.

Further, coupling agent is VTES, gamma-aminopropyl-triethoxy-silane, γ-aminopropyl front three One or more of TMOS, positive tetraisopropyl titanate or the different stearoyl titanate esters of isopropyl three, preferably vinyl three Ethoxysilane, antioxidant is antioxidant 168, and levelling agent is organic-silicon-modified polysiloxanes, and dispersant is to have BYK-ATU to divide Powder.

Further, present invention additionally comprises a kind of Foot-rub-preventive footwear patch preparation method, including following preparation process：

Step 1, cotton fiber and TPU resin are placed under 50 DEG C of hot blasts fully it are dried, so that cotton fiber and the water of TPU resin is contained Amount is in below 0.06wt%；

Step 2, weigh each component according to proportioning, by TPU resin, wax powder, filler, cotton fiber, coupling agent, antioxidant and levelling Agent is placed in agitator, is uniformly mixed under the mixing speed of 400rad/min at 100 DEG C, be subsequently adding cotton fiber and Dispersant dispersion machine is uniformly dispersed, reduce batch mixing temperature to 80 DEG C, be incubated 2min, then by batch mixing throw to banbury in Banburying 4-6h at 110-130 DEG C；

Step 3, the batch mixing tablet machine obtaining after step 2 banburying is pressed into sheet material polyurethane；

Step 4, required form is processed in sheet material polyurethane cutting, obtains polyurethane body, on the surface of polyurethane body Coat bonding agent, then the one side of polyurethane body is sticked PE film, another side sprays politef, uses politef table The polytetrafluoroethylene floor that face inorganic agent process is formed, is then coated with bonding agent, mutispandex clipping and carving is become required form and overlays On polytetrafluoroethylene floor, then reusable heat air-dry dry after, according to footwear paste shape be cut into Foot-rub-preventive footwear patch.

In sum, due to employing technique scheme, the invention has the beneficial effects as follows：

1. the footwear patch of the present invention has good toughness and anti-wear performance, and the skin on foot can be effectively when amplexiforming tactile with footwear Protection skin will not be worn, and Foot-rub-preventive performance is good, due to without noxious substance, even if also will not make to human body with Wound contact Become poisoning and allergy, and skin fitness is good；

2nd, after the footwear of the present invention are attached to immersion, due to there is mutispandex layer and polytetrafluoroethylene floor, its coefficient of friction is hardly Change, skin also will not be worn because of the presence of water, there is the function of stronger protection skin；

3rd, contain the material such as more multicomponent cotton fiber, Pulvis Talci due in the polyurethane body of employing, footwear are attached to life-time service During, larger plastic deformation, structure and size will not be occurred to keep good, stability is strong, and scrappage is low, durable in use, Control the waste of resource to a certain extent；

4th, the present invention footwear patch preserve, using and convenient transportation, there is preferable business its aesthetic appearance, simultaneously do not contain noxious substance and Expensive raw materials, its low cost of manufacture, relatively strong to the adaptability in market it is easy to form industrialized production.

Brief description

Fig. 1 is that a kind of Foot-rub-preventive footwear patch of the present invention overlooks two-dimensional structure schematic diagram；

Fig. 2 is the Foot-rub-preventive footwear patch cross section structure diagram of the present invention.

In figure labelling：1 is polyurethane body, and 2 is PE film, and 3 is polytetrafluoroethylene floor, and 4 is mutispandex, and 5 is Foot-rub-preventive footwear Patch.

Specific embodiment

Below in conjunction with the accompanying drawings, the present invention is described in detail.

In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with drawings and Examples, right The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only in order to explain the present invention, and It is not used in the restriction present invention.

Embodiment one

As depicted in figs. 1 and 2, a kind of Foot-rub-preventive footwear patch 5, including polyurethane body 1, the one side of polyurethane body 1 posts one layer PE film 2, the another side of polyurethane body 1 sprays one layer of polytetrafluoroethylene floor 3, the another side of polytetrafluoroethylene floor 3 through surface at After reason agent is processed, one layer of mutispandex 4 of bonding, the preparation method of described Foot-rub-preventive footwear patch 5 comprises the following steps：

Step 1, manufacture improvement after TPU resin, by mass ratio be 26% dimethicone, 38.5% TPR and 6% Caulis et Folium Lini Oil is placed in turbine stirrer and is uniformly mixed, and mixed liquor is heated to 100 DEG C, the organic siliconresin that mass ratio is 7% Be heated to 160 DEG C to melt after, be added in mixed liquor, keep mixed liquor temperature at 100 DEG C, with the stirring of 600rad/min Speed stirs 3h, obtains mixed liquor；

Step 2, mass ratio is 10.8% Pulvis Talci, 3.2% zinc stearate, 1.5% triethylamine nertralizer, 0.5% have Machine tin catalyst and 4.3% erucyl amide be uniformly mixed in agitator after add step 1 mixed liquor in stirring mixing Uniformly, then the mixed liquor after mix homogeneously is delivered to banburying 8h in banbury, be eventually adding the boric acid that mass ratio is 2.2% and allow Its coagulation forming, the then TPU resin after Twin screw extruder extruding pelletization is improved, storage is standby；

Step 3, the TPU resin after the white cotton fiber for 3-7mm for the length and improvement is placed under 50 DEG C of hot blasts fully it is dried, The water content making the TPU resin after white cotton fiber and improvement is in below 0.06wt%, standby；

Step 4, weigh each component according to proportioning, by the TPU resin after 90 parts of improvement, 6 parts of wax powder（Increase transparency, prevent Caking and anti scuffing performance, increase footwear patch comfortable feel degree）, 15 parts of filler, 1.5 parts of VTES is even Connection agent, 0.8 part of antioxidant 168 and 0.7 part of organic-silicon-modified polysiloxane leveling agents are placed in agitator, It is uniformly mixed at 100 DEG C under the mixing speed of 400rad/min, be subsequently adding 9 parts of white cotton fibers and 0.3 part of BYK-ATU Dispersant dispersion machine is uniformly dispersed, reduce batch mixing temperature to 80 DEG C, be incubated 2min, then by batch mixing throw to banbury in Banburying 5h at 115 DEG C；

Step 5, the batch mixing tablet machine obtaining after step 4 banburying is pressed into the thick sheet material polyurethane of 4mm；

Step 6, required form is processed in sheet material polyurethane cutting, obtains the thick polyurethane body of 4mm, in polyurethane body Bonding agent is coated on surface, then the one side of polyurethane body is sticked the thick PE film of 0.05mm, another side sprays 0.05- The thick politef of 0.1mm, the polytetrafluoroethylene floor being formed with ptfe surface inorganic agent process, it is then coated with bonding Agent, mutispandex clipping and carving is become required form and overlays on polytetrafluoroethylene floor, then reusable heat air-dry dry after, according to footwear paste shape Shape is cut into Foot-rub-preventive footwear patch.

Embodiment two

A kind of Foot-rub-preventive footwear patch, including polyurethane body, the one side of polyurethane body posts PE film, polyurethane body another Simultaneously spray one layer of polytetrafluoroethylene floor, after the another side surface treated agent of polytetrafluoroethylene floor is processed, one layer of bonding is good long-pending Cloth, the preparation method of described Foot-rub-preventive footwear patch comprises the following steps：

Step 4, weigh each component according to proportioning, by the TPU resin after 90 parts of improvement, 5 parts of wax powder（Increase transparency, prevent Caking and anti scuffing performance, increase footwear patch comfortable feel degree）, 10 parts of filler, 1 part of VTES is coupled Agent, 0.5 part of antioxidant 168 and 0.5 part of organic-silicon-modified polysiloxane leveling agents are placed in agitator, in 400rad/ It is uniformly mixed at 100 DEG C under the mixing speed of min, be subsequently adding 8 parts of white cotton fibers and 0.2 part of BYK-ATU dispersant It is uniformly dispersed with dispersion machine, the temperature reducing batch mixing, to 80 DEG C, is incubated 2min, then batch mixing is thrown to banbury at 110 DEG C Banburying 6h；

Embodiment three

Step 4, weigh each component according to proportioning, by the TPU resin after 90 parts of improvement, 8 parts of wax powder（Increase transparency, prevent Caking and anti scuffing performance, increase footwear patch comfortable feel degree）, 20 parts of filler, 3 parts of VTES is coupled Agent, 1 part of antioxidant 168 and 1 part of organic-silicon-modified polysiloxane leveling agents are placed in agitator, 400rad/min's It is uniformly mixed at 100 DEG C under mixing speed, be subsequently adding 11 parts of white cotton fibers and 0.5 part of BYK-ATU dispersant with dividing Scattered machine is uniformly dispersed, and the temperature reducing batch mixing, to 80 DEG C, is incubated 2min, then batch mixing is thrown to banbury banburying at 130 DEG C 4h；

Example IV

Step 4, weigh each component according to weight proportion, by the TPU resin after 90 parts of improvement, 7 parts of wax powder（Increase transparent Degree, anti-caking and anti scuffing performance, increase footwear patch comfortable feel degree）, 17 parts of filler, 2 parts of VTES Coupling agent, 0.7 part of antioxidant 168 and 0.7 part of organic-silicon-modified polysiloxane leveling agents are placed in agitator, It is uniformly mixed at 100 DEG C under the mixing speed of 400rad/min, be subsequently adding 9 parts of white cotton fibers and 0.4 part of BYK-ATU Dispersant dispersion machine is uniformly dispersed, reduce batch mixing temperature to 80 DEG C, be incubated 2min, then by batch mixing throw to banbury in Banburying 5h at 120 DEG C；

If polyurethane body obtained above is respectively taken dry sample, test poly- ammonia with testing equipments such as universal testing machines The main performance of ester body, obtains following result：

Note：1. one week of aging in artificial accelerated aging case, then surveys the decline percentage ratio of its performance；

2. the test of plastic deformation is to measure after 1000 Quick bendings；

As seen from the above table, the Foot-rub-preventive footwear patch of the present invention has excellent tensile strength and tearing toughness, and its plasticity variability is relatively Low, durable in use it is easy to marketing.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all essences in the present invention Any modification, equivalent and improvement made within god and principle etc., should be included within the scope of the present invention.

Claims

1. a kind of Foot-rub-preventive footwear patch, including polyurethane body it is characterised in that the one side of polyurethane body posts PE film, The another side of polyurethane body sprays one layer of polytetrafluoroethylene floor, and the another side surface treated agent of polytetrafluoroethylene floor is processed Afterwards, one layer of mutispandex of bonding, described polyurethane body is made up of the material of following weight portion：90 parts of TPU resin, wax powder 5-8 part, Filler 10-20 part, cotton fiber 8-11 part, coupling agent 1-3 part, antioxidant 0.5-1 part, levelling agent 0.5-1 part, dispersant 0.2- 0.5 part.

2. Foot-rub-preventive footwear as claimed in claim 1 patch is it is characterised in that TPU resin is the TPU resin after improvement, described changes TPU resin after good is obtained by following steps：

3. Foot-rub-preventive footwear patch as claimed in claim 1 is it is characterised in that filler is titanium dioxide, aerosil and silicone Powder is by weight for 1:4:1 mixture being mixed.

4. Foot-rub-preventive footwear as claimed in claim 1 patch it is characterised in that cotton fiber by white cotton after roller gin preliminary working It is obtained after the white cotton linter fiber dispersion obtaining, the length of cotton fiber is 3-7mm.

5. Foot-rub-preventive footwear patch as claimed in claim 1 is it is characterised in that coupling agent is VTES, γ-ammonia Propyl-triethoxysilicane, γ-aminopropyltrimethoxysilane, positive tetraisopropyl titanate or the different stearoyl titanate esters of isopropyl three One or more of, preferably VTES, antioxidant is antioxidant 168, and levelling agent changes for organosilicon Property polysiloxanes, dispersant be have BYK-ATU dispersant.

6. a kind of preparation method of Foot-rub-preventive footwear patch as claimed in claim 1 is it is characterised in that include following preparation process：

Step 2, weigh each component according to proportioning, by TPU resin, wax powder, filler, cotton fiber, coupling agent, antioxidant and levelling Agent is placed in agitator, is uniformly mixed under the mixing speed of 400rad/min at 100 DEG C, is subsequently adding cotton fiber and uses Dispersion machine is uniformly dispersed, and the temperature reducing batch mixing, to 80 DEG C, is incubated 2min, then batch mixing is thrown to banbury in 110-130 DEG C Lower banburying 4-6h；