CN107663289A

CN107663289A - A kind of big primer of resistance to oiled boots of injection molding that can prevent incipient scorch

Info

Publication number: CN107663289A
Application number: CN201610610487.4A
Authority: CN
Inventors: 杨军
Original assignee: Guilin Jieyu Environmental Protection Technology Co Ltd
Current assignee: Guilin Jieyu Environmental Protection Technology Co Ltd
Priority date: 2016-07-29
Filing date: 2016-07-29
Publication date: 2018-02-06

Abstract

The invention discloses a kind of big primer of resistance to oiled boots of injection molding that can prevent incipient scorch, calculate in parts by weight, including butadiene-styrene rubber 80, nitrile rubber 20, sulphur 2, captax 0.4 0.6, diphenylguanidine 0.1 0.3, altax 0.9 1.1, Vulcanization accelerator TMTD 0.1 0.2, zinc oxide 5, stearic acid 1, antioxidant A 0.8 1.2, antioxidant D 0.8 1.2, calcium carbonate 65, liquid coumarone 10, dibutyl ester 25, carbon black 40, antiscorching agent YG 1 0.2 0.4, antiscorching agent PVI 0.1 0.5.Butylbenzene, nitrile rubber and fluid medium solubility parameter great disparity, have preferable oil resistivity；Filler calcium carbonate dosage suitably increases, and contributes to anti-swelling；State of cure (vulcanization) improves, and crosslink density is high, and oil-resistant effect is preferable.With the big primer of formula production, its oil resistance is preferable, and cost is relatively low, adapts to contact the operating environment of oils, and suitable for the protection of oil operations, and process is not susceptible to incipient scorch phenomenon, can greatly improve the security of sizing material processing.

Description

A kind of big primer of resistance to oiled boots of injection molding that can prevent incipient scorch

Technical field

The present invention relates to rubber overshoes manufacturing field, is related to the big primer formula of boots, more particularly to a kind of note that can prevent incipient scorch The big primer of the resistance to oiled boots of platen press.

Background technology

Shoes made of General Purpose Rubber material, its big primer are usually that natural rubber adds synthetic rubber, use range is wide, Cost is low, but because natural rubber and fluid medium solubility parameter are not greatly different enough, causes big primer oil resistivity poor, therefore, Conventional big primer formula can not be used for the protection boots for contacting oils.

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 resistance to oiled boots and incipient scorch phenomenon occurs when being kneaded and machining with big primer, 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 resistance to oiled boots of the injection molding that can prevent incipient scorch and use Big primer, with the big primer of formula production, its oil resistance is preferable, and cost is relatively low, adapts to the operating environment of oil resistant, is applicable In the protection of oil resistant operation, and process is 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 big primer of resistance to oiled boots of injection molding that can prevent incipient scorch, is calculated in parts by weight, including

Butadiene-styrene rubber 80, nitrile rubber 20, sulphur 2, captax 0.4-0.6, diphenylguanidine 0.1-0.3, altax 0.9- 1.1st, Vulcanization accelerator TMTD 0.1-0.2, zinc oxide 5, stearic acid 1, antioxidant A 0.8-1.2, antioxidant D 0.8-1.2, calcium carbonate 65th, liquid coumarone 10, dibutyl ester 25, carbon black 40, antiscorching agent YG-1 0.2-0.4, antiscorching agent PVI 0.1-0.5.

The advantage of the invention is that：Using butylbenzene, nitrile rubber, rubber and fluid medium solubility parameter great disparity, have Preferable oil resistivity；Softening agent is based on dibutyl ester, and with part coumarone；Filler calcium carbonate dosage suitably increases, and helps In anti-swelling；State of cure (vulcanization) improves, and crosslink density is high, and oil-resistant effect is preferable.With its oil resistance of the big primer of formula production Preferably, cost is relatively low, adapts to contact the operating environment of oils, suitable for the protection of oil operations.Gum base ingredients are using anti-scorch Agent YG-1 and antiscorching agent PVI is combined to prevent the generation of incipient scorch phenomenon, and being not susceptible to incipient scorch with the big primer of formula production shows As the security that sizing material is processed can be greatly improved.Antiscorching agent PVI is for being already subjected to high fever or having the sizing material of slight incipient scorch simultaneously With reactivation, the process safety of sizing material can be further improved, avoids the sizing material incipient scorch caused by temperature rise, roller temperature are too high Loss.

Embodiment

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

Embodiment：

Butadiene-styrene rubber 80, nitrile rubber 20, sulphur 2, captax 0.5, diphenylguanidine 0.2, altax 1.0, accelerator TMTD 0.15, zinc oxide 5, stearic acid 1, antioxidant A 1.0, antioxidant D 1.0, calcium carbonate 65, liquid coumarone 10, two fourths Ester 25, carbon black 40, antiscorching agent YG-1 0.3, antiscorching agent PVI 0.3.

Preparation method：

The butylbenzene of formula ratio, nitrile rubber are added in banbury and are kneaded completely, then addition stearic acid, carbon black, accelerator exist Mixing is complete in mill, and age resistor, plasticizer, filler, the antiscorching agent for adding formula ratio continue to be kneaded completely, finally add Enter sulphur to be kneaded completely.

Claims

1. a kind of big primer of resistance to oiled boots of injection molding that can prevent incipient scorch, is calculated in parts by weight, including：Butadiene-styrene rubber 80, fourth Nitrile rubber 20, sulphur 2, captax 0.4-0.6, diphenylguanidine 0.1-0.3, altax 0.9-1.1, Vulcanization accelerator TMTD 0.1-0.2, zinc oxide 5, stearic acid 1, antioxidant A 0.8-1.2, antioxidant D 0.8-1.2, calcium carbonate 65, liquid coumarone 10th, dibutyl ester 25, carbon black 40, antiscorching agent YG-1 0.2-0.4, antiscorching agent PVI 0.1-0.5.

2. the big primer of the injection molding resistance to oiled boots according to claim 1 that can prevent incipient scorch, it is characterised in that according to weight Part is measured to calculate, including：Butadiene-styrene rubber 80, nitrile rubber 20, sulphur 2, captax 0.5, diphenylguanidine 0.2, altax 1.0th, Vulcanization accelerator TMTD 0.15, zinc oxide 5, stearic acid 1, antioxidant A 1.0, antioxidant D 1.0, calcium carbonate 65, liquid are ancient Horse is grand 10, dibutyl ester 25, carbon black 40, antiscorching agent YG-1 0.3, antiscorching agent PVI 0.3.