CN102153789A - Technique for processing antistatic rubber roll - Google Patents

Abstract

The invention relates to a technique for processing an antistatic rubber roll. The antistatic rubber roll is produced by using an injection molding technique, wherein the rubber roll is prepared from natural rubber and butadiene rubber as main materials, carbon black as reinforcing filler and an antistatic agent as an additive. Through a textile drafting rubber roll produced by using the technique for processing the antistatic rubber roll, a degumming situation is solved, and the antistatic performance of the rubber roll is improved.

Description

The complete processing of antistatic rubber roll

Technical field

The present invention relates to a kind of injection moulding method of antistatic rubber roll, the weaving drafting rubber roller that this method is produced has solved degumming phenomenon, and has good antistatic performance.

Background technology

In spinning process, yarn is to realize by the drafting assembly in the spinning equipment from the coarse to fine, rubber roll is the key part in the drafting assembly, in drafting assembly, fibrous bundle carries out the drawing-off operation between rubber roll and roller, the quality of its quality and the quality of use properties thereof, directly having influence on into sliver does, the yarn defect, powerful, end breakage rate and lap waste rate, so just require the rubber roll surface that fibrous bundle is had enough curable grips, spinning machine repeatedly sticks drawing-off to fiber by spinning rubber-roller, the twisting resultant yarn, spinning rubber-roller has direct influence to the quality and the output of yarn; In addition, in the spinning process of spinning rubber-roller, easily produce electrostatic interaction, thereby fiber is adsorbed, be wrapped in the rubber roll surface, cause broken end, influence spinning quality.

Roughly there are two kinds in the mode that addresses the above problem: the one, improve the intensity between skeleton and the sizing material; The 2nd, improve rubber compounding.At present research direction mainly concentrates on the rubber roll surface quality, as ZL02112811.1,

200410053380.1 etc., though improved the antistatic property of rubber roll to a certain extent,, do not relate to the solution degumming phenomenon not from deal with problems at all yet.In addition, the research of considering to improve the surface quality of rubber roll from the angle of rubber roll complete processing is seldom arranged.The existing general technology of extruding the back steam vulcanization that adopts of technology of producing the weaving drafting rubber roller, there are the following problems for this primary technology: one, curing time is long, and curing medium is a water vapour, causes product aging easily or owe the sulphur phenomenon in sulfidation; Two, Production Flow Chart complexity, various consumption are many, the easy incipient scorch of sizing material; Three, operation easier is big, is difficult to realize fully combining with framework material, can not get the ideal curable grip.

For these reasons, design that a kind of technology is simple, in the quality product homogeneous, stable performance, spinning process and the high rubber roll production technique of the curable grip between the fibrous bundle become the important topic of field of textile machinery.

Summary of the invention

The objective of the invention is at the deficiencies in the prior art, design a kind of production method that improves weaving drafting rubber roller surface quality.

The present invention has adopted following technical scheme: a kind of complete processing of antistatic rubber roll:

The employing injection moulding method is produced, and described rubber roll is a material of main part with natural rubber and cis-1,4-polybutadiene rubber, is reinforcing filler with the carbon black, and its composition in weight part, comprising:

Natural rubber 60-80

Cis-1,4-polybutadiene rubber 20-40

Low Mooney acrylic elastomer 0-5

Static inhibitor 8-10

Zinc oxide 3-8

Sulphur 1-5

Anti-aging agent 3-6

Carbon black N550 25-35

Carbon black N330 15-20

Paraffin 0.5-0.8

Accelerator TBBS 1-1.5

Stearic acid 1-1.5

Transformer oil 20-25

Black lubricate 15-50

Formulate sizes is injected according to the above ratio, and the injection barrel temperature is 70 ℃, 50 seconds inject time, injection pressure 190Kg, locked mode pressure 200Kg; The vulcanizing press sulfuration, 145 ℃ of curing temperatures.

Can add acrylic elastomer in the prescription, as everyone knows, the resistance toheat of acrylic elastomer is very outstanding, be better than General Purpose Rubber, general use temperature can reach 200 ℃, but the processing characteristics of common acrylic elastomer is relatively poor, is unsuitable for injection molding technique, therefore, the present invention uses low Mooney acrylic elastomer (mooney viscosity (ML ₁₊₄100 ℃) below 50).

The present invention adopts hard (carbon) black N330 and/or N550 as reinforcing filler, increases the wear resistance of rubber roll, in order to regulate the hardness of product, also can regulate the consumption of carbon black, and above-mentioned carbon black can use separately, or is used in combination, to meet the different needs.

Be activator with zinc oxide among the present invention; Anti-aging agent can be the combination of three kinds of anti-aging agent: anti-aging agent RD 1-1.5, antioxidant BLE-W 1.5-2, antioxidant 4010NA 1.5-2; Static inhibitor is preferably the ester class, as glyceryl monolaurate, GLYCERYL DILAURATE etc.

Beneficial effect of the present invention is: sulphur phenomenon, quality product homogeneous can not worn out, be owed in (1); (2) adopt injection molding technique, product has reduced the Quality Control point in management, is beneficial to improve the stability that guarantees product; (3) in the rubber roll process that injection is produced, can adopt the good framework material of braiding, directly be fixed on the plug, this both can guarantee that product had the interior decorative pattern of enough degree of depth, again can hose lining very thin, thereby the flexible resistance of raising cushion rubber and fatigue performance, wear resisting property help improving the gripping rate in the spinning process to reducing slip in the spinning process; (4) add low Mooney acrylic elastomer in the sizing compound formula, thereby improved the performance of high temperature resistant aspect; (5) adding static inhibitor avoids static to take place.

Embodiment

Below in conjunction with embodiment 1-4 and comparative example 1-2 the present invention is further described in detail, but the present invention never is confined to these embodiment.

Embodiment 1-4 and comparative example 1-2

Meet requirement of the present invention according to preparing shown in the table 1, be performance modifier, be the embodiment 1-4 of strongthener with hard (carbon) black N330, N550 with low Mooney acrylic elastomer PA-402L injection molding technique production, that produce with NOK.Adopt similar cooperation, comparative example 1-2 does not adopt injection molding technique, and wherein comparative example 1 adds low Mooney acrylic elastomer, and comparative example 2 does not add.

Table 1

Table 2

Find out from the comparing result of table 2: the mechanical property of adding the rubber roll material of static inhibitor is not subjected to big influence, satisfies the production requirement of rubber roll, and injection molding technique is little to the influence of product physical strength.

Claims (1)

1. the complete processing of an antistatic rubber roll:

Adopt injection moulding method, described rubber roll is a material of main part with natural rubber and cis-1,4-polybutadiene rubber, is reinforcing filler with the carbon black, and its composition in weight part, comprising:

Natural rubber 60-80

Cis-1,4-polybutadiene rubber 20-40

Low Mooney acrylic elastomer 0-5

Static inhibitor 8-10

Zinc oxide 3-8

Sulphur 1-5

Anti-aging agent 3-6

Carbon black N550 25-35

Carbon black N330 15-20

Paraffin 0.5-0.8

Accelerator TBBS 1-1.5

Stearic acid 1-1.5

Transformer oil 20-25

Black lubricate 15-50

Formulate sizes is injected according to the above ratio, and the injection barrel temperature is 70 ℃, 45 seconds inject time, injection pressure 190Kg, locked mode pressure 200Kg; The vulcanizing press sulfuration, 145 ℃ of curing temperatures.