CN107556543A

CN107556543A - A kind of insulating boot vamp rubber for being not easy incipient scorch

Info

Publication number: CN107556543A
Application number: CN201610501897.5A
Authority: CN
Inventors: 黄思齐
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-06-30
Filing date: 2016-06-30
Publication date: 2018-01-09

Abstract

The invention discloses a kind of insulating boot vamp rubber for being not easy incipient scorch, it is characterised in that calculate in parts by weight, including：Natural rubber 100, sulphur 0.7 0.9, captax 0.4 0.6, diphenylguanidine 0.3 0.5, altax 0.2 0.4, Vulcanization accelerator TMTD 0.7 0.9, zinc oxide 1.9 2.1, stearic acid 1.4 1.6, antioxidant A 0.4 0.6, antioxidant D 0.8 1.2, calcium carbonate 87, montanin wax 0.8 1.2, paraffin 1.4 1.6, zinc stearate 1.9 2.1, nigrosine 1.2 1.4, salicylic acid 0.2 0.4.Its insulating properties is preferable with vamp rubber for the insulating boot produced with the formula, and cost is relatively low, adapts to the operating environment of electrician, suitable for the protection of Electrician Operation；The security of sizing material processing is greatly improved, avoids the loss of the sizing material incipient scorch caused by temperature rise, roller temperature are too high.

Description

A kind of insulating boot vamp rubber for being not easy incipient scorch

Technical field

The present invention relates to elastomeric material preparation field, be related to footwear vamp rubber formula, more particularly to a kind of incipient scorch that is not easy Insulating boot vamp rubber.

Background technology

Shoes made of General Purpose Rubber material, its vamp rubber are usually that natural rubber adds synthetic rubber, use range is wide, Cost is low, but because partially synthetic elastomeric dielectric performance is relatively low, causes vamp rubber insulating properties poor, the promotion commonly used in sizing material Agent, age resistor contain sulphur or nitrogen mostly, even if usage amount is few, can also influence electrical property, containing the big accelerator of polarized, prevent always The sizing material of agent, water imbibition is big, and dielectric properties can be more decreased obviously, and conventional filler and reinforcing agent carbon black can cause the electricity of rubber Hydraulic performance decline, therefore, conventional vamp rubber formula can not be used for the protection of Electrician Operation.

Incipient scorch is a kind of sizing material prevulcanization phenomenon, produce incipient scorch the reason for have：Mismate, such as vulcanizing agent, accelerator Dosage is too many；Misoperation, as roller temperature is too high, too early add Sulfur or add vulcanizing agent after mixing time it is oversize.It is kneaded uneven Cause vulcanizing agent and accelerator concentration of local；It is improper that sizing material cooling is parked.Such as park too long, holding area temperature is too high or air Circulation etc., when there is incipient scorch phenomenon, sizing material is rough, and pitted skin plasticity reduces, and size occurs in sizing material surface when serious The particle not waited.

Because summer temperature is higher, easily causes insulating boot vamp rubber and incipient scorch phenomenon occurs when being kneaded and machining, make Scrapped into sizing material.

The content of the invention

The purpose of the present invention is in view of the shortcomings of the prior art, and to provide a kind of insulating boot vamp rubber for being not easy incipient scorch, Its insulating properties is preferable with vamp rubber for the insulating boot produced with the formula, and cost is relatively low, adapts to the operating environment of electrician, is used for The protection of Electrician Operation, process are not susceptible to incipient scorch phenomenon, can greatly improve the security of sizing material processing.

Realizing the technical scheme of the object of the invention is：

A kind of insulating boot vamp rubber for being not easy incipient scorch, is calculated in parts by weight, including：

Natural rubber 100, sulphur 0.7-0.9, captax 0.4-0.6, diphenylguanidine 0.3-0.5, altax 0.2-0.4, Vulcanization accelerator TMTD 0.7-0.9, zinc oxide 1.9-2.1, stearic acid 1.4-1.6, antioxidant A 0.4-0.6, antioxidant D 0.8- 1.2nd, calcium carbonate 87, montanin wax 0.8-1.2, paraffin 1.4-1.6, zinc stearate 1.9-2.1, nigrosine 1.2-1.4, bigcatkin willow Sour 0.2-0.4.

The advantage of the invention is that：Using natural rubber, dielectric properties are improved；Sulfur consumption is reduced, uses Vulcanization accelerator TMTD Instead of part sulfur consumption；Using the small calcium carbonate of water imbibition；The carbon black for causing rubber electrical property to decline is not used, with nigrosine Instead of；In view of the volume resistance of compounding ingredient is generally greater than rubber, so improving gel content；Adapted copper suppressive age resistor helps In the raising of electrical insulation capability；Plasticizer contributes to the raising of insulating properties using paraffin river rising in Ningxia and flowing into central Shaanxi oil.The insulation produced with the formula Its insulating properties is preferable with vamp rubber for boots, and cost is relatively low, adapts to the operating environment of electrician, suitable for the protection of Electrician Operation； Gum base ingredients prevent the generation of incipient scorch phenomenon using salicylic acid, and the insulating boot produced with the formula is not susceptible to Jiao with vamp rubber Phenomenon is burnt, the security of sizing material processing can be greatly improved.Avoid the loss of the sizing material incipient scorch caused by temperature rise, roller temperature are too high.

Embodiment

Present invention is further elaborated below by embodiment, but is not limitation of the invention.

The formula can carry out two sections by banbury and be kneaded completion, to improve the cohesive of sizing material.

Natural rubber is 1#-2# smoke sheet rubbers, to adapt to manual assembly shaping.

Embodiment：

1# smoke sheet rubbers 100, sulphur 0.8, captax 0.5, diphenylguanidine 0.4, altax 0.3, Vulcanization accelerator TMTD 0.8, It is zinc oxide 2.0, stearic acid 1.5, antioxidant A 0.5, antioxidant D 1.0, calcium carbonate 87, montanin wax 1.0, paraffin 1.5, hard Resin acid zinc 2.0, nigrosine 1.3, salicylic acid 0.3.

Preparation method：

The natural rubber of formula ratio is added in banbury and is kneaded completely, then addition zinc stearate, nigrosine, accelerator are being opened Mixing is complete in mill, and the salicylic acid, age resistor and plasticizer for adding formula ratio continue to be kneaded completely, are eventually adding sulphur and mix Refining is complete.

Claims

A kind of 1. insulating boot vamp rubber for being not easy incipient scorch, it is characterised in that calculate in parts by weight, including：

Natural rubber 100, sulphur 0.7-0.9, captax 0.4-0.6, diphenylguanidine 0.3-0.5, altax 0.2-0.4, Vulcanization accelerator TMTD 0.7-0.9, zinc oxide 1.9-2.1, stearic acid 1.4-1.6, antioxidant A 0.4-0.6, antioxidant D 0.8- 1.2nd, calcium carbonate 87, montanin wax 0.8-1.2, paraffin 1.4-1.6, zinc stearate 1.9-2.1, nigrosine 1.2-1.4, bigcatkin willow Sour 0.2-0.4.
2. the insulating boot vamp rubber according to claim 1 for being not easy incipient scorch, it is characterised in that calculate in parts by weight, Including：

1# smoke sheet rubbers 100, sulphur 0.8, captax 0.5, diphenylguanidine 0.4, altax 0.3, Vulcanization accelerator TMTD 0.8, It is zinc oxide 2.0, stearic acid 1.5, antioxidant A 0.5, antioxidant D 1.0, calcium carbonate 87, montanin wax 1.0, paraffin 1.5, hard Resin acid zinc 2.0, nigrosine 1.3, salicylic acid 0.3.