CN103242573A

CN103242573A - Rubber damping gum cover and preparation method thereof

Info

Publication number: CN103242573A
Application number: CN2013101923194A
Authority: CN
Inventors: 高福年; 纪顺本; 张先明
Original assignee: Qingdao Baofengsheng Fuhua Import & Export Seals Co Ltd
Current assignee: Qingdao Baofengsheng Fuhua Import & Export Seals Co Ltd
Priority date: 2013-05-14
Filing date: 2013-05-14
Publication date: 2013-08-14

Abstract

The invention belongs to the technical field of rubber products, and in particular relates to a rubber damping gum cover and a preparation method thereof. The rubber damping gum cover comprises the following components in parts by weight: 100 parts of butadiene styrene rubber, 55-60 parts of carbon black, 0.5-0.6 part of sulfur, 4-4.5 parts of an accelerant, 5-6 parts of zinc oxide, 1.5-2 parts of stearic acid, 5-7 parts of anti-aging agents 4010NA, NBC and RD, and 1.5-2 parts of a composite rubber dispersing agent AT-B. The rubber damping gum cover is prepared by steps of blending, pre-forming and vulcanization, and is ozone aging resisting, weather-aging resisting, moderate in compression stress and environment-friendly; and the physical mechanical property of the rubber material is excellent, and a vehicle can run stably, comfortably, safely, reliably and durably.

Description

A kind of rubber shock-absorbing gum cover and preparation method thereof

Technical field

The invention belongs to the rubber item technical field, be specifically related to a kind of rubber shock-absorbing gum cover and preparation method thereof.

Background technology

Current mobility car for example automobile, motorcycle requires to environment, to user's pollution-free (being contact stain and the atmospheric pollution of heavy metal), environmental protection and energy saving and high durable, long lifetime.But existing rubber shock-absorbing gum cover adopts natural rubber usually; styrene-butadiene rubber(SBR); chloroprene rubber; cis-1,4-polybutadiene rubber is main; in the cooperation without heavy metal control with detect; inexpensive poisonous anti-aging agent; the metallic compound that use level is high; in addition have mix the very heavy reclaimed rubber of peculiar smell; so not environmental protection of sizing material; heavy metal lead; cadmium; sexavalent chrome and bromine severe overweight; not anti-ozone; tensile strength is little; elongation is low, distortion is big, loss of properties on aging; the damping gum cover reliability with this making is poor; weather resistance is low, the early damage be full of cracks particularly on high loading and relatively poor road surface; above-mentioned phenomenon is more obvious; not only have a strong impact on the quality condition of car load, and environment is polluted, is poisoned user's car load.How to research and develop rubber shock-absorbing gum cover and preparation method thereof always, by improving rubber compounding and manufacture craft, adopt environment-friendly type, high-quality rubber chemicals material, guarantee the performance of damping gum cover, its hardness is moderate, tensile strength is high, tensile yield is big, the rubber size of the low distortion of ageing-resistant, anti-ozone, anti-weather, snappiness, and advantages of simplicity and high efficiency manufacture craft, improving particularly motorcycle, minicar stationarity, comfort level, environmental protection and energy saving and the reliable durable of travelling of motor vehicle, this is just becoming the technical problem that this field at present needs to be resolved hurrily.

Summary of the invention

The objective of the invention is the not anti-ozone at existing rubber shock-absorbing gum cover existence, tensile strength is little, and elongation is low, and distortion is big, loss of properties on aging, and problems such as not environmental protection provide a kind of new rubber shock-absorbing gum cover.

To achieve these goals, the technical solution used in the present invention is: a kind of rubber shock-absorbing gum cover comprises the component of following weight part: 100 parts in styrene-butadiene rubber(SBR); 55～60 parts of carbon blacks; 0.5～0.6 part in sulphur; 4～4.5 parts of promotor; 5～6 parts in zinc oxide; 1.5～2 parts of stearic acid; Antioxidant 4010NA, NBC, RD5～7 part; Compounded rubber dispersant A T-B1.5～2 parts.

Described promotor is the mixture of TMTD, TETD, DTDM, CZ, is respectively TMTD0.7 part, TETD0.7 part, DTDM0.8 part, CZ2.0 part.

Another purpose of real name invention provides a kind of preparation method of rubber shock-absorbing gum cover, comprises the following steps:

1, mixing

Styrene-butadiene rubber(SBR) is put in the Banbury mixer, and 60～80 ℃ of banburying chamber's temperature add anti-aging agent, promoting agent, compounded rubber dispersant A T-B after mixing 1～2 minute; 80～100 ℃ of temperature, add carbon black after mixing 2～3 minutes; 100～120 ℃ of temperature, mixing 7～8 minutes binder removals, dump temperature is below 140 ℃; Add vulcanizing agent and promotor in mill behind the sizing material binder removal, mill roller temperature is below 50 ℃, roll spacing 5～6mm, the triangle bag is played 3～4 times in reinforced back, and 0.5～1mm is transferred in roll spacing, thin-pass 2～3 times, put sheet under thick roll spacing 5～6mm, cross water cooling, film hangs over the shelf fan and dries up and deposit;

2, preforming process

With accurate preform machine preheating, 50～60 ℃ of body temperatures, 60～65 ℃ of head temperatures, 65～75 ℃ of shape of the mouth as one speaks temperature are extruded the limit with film edge and are cut out cylindric compound blank, park more than 24 hours, change vulcanization process over to;

3, sulfuration process

With the mould of putting into compound blank push 165～170 ℃ vacuumized the vulcanizer press vulcanization 4～5 minutes, time is released mould automatically and opens mould automatically to the postcure machine, the rubber shock-absorbing gum cover of sulfidization molding is ejected automatically, repair unnecessary glue limit and prepare the damping gum cover.

Rubber shock-absorbing gum cover provided by the invention and preparation method thereof compared with prior art, has the following advantages and positively effect:

1, the hardness of rubber shock-absorbing gum cover of the present invention is moderate, and more than the tensile strength 18MPa, tensile yield is more than 350%, anti-ozone ageing, Weather-resistant, and stress under compression is moderate, environmental protection.

2, utilize the rubber shock-absorbing gum cover of component provided by the present invention and method preparation, the physical and mechanical properties of its sizing material is good, guarantees steady, the comfortable safety of motor-driven vehicle going and reliable durable.

Embodiment

Below in conjunction with specific embodiment the present invention is described in further detail:

Embodiment 1, a kind of rubber shock-absorbing gum cover, its sizing material component content proportioning is by weight: 1502100 parts in styrene-butadiene rubber(SBR); Carbon black N33055 part; 0.5 part in sulphur; TM monex TD0.7 part, TETD0.7 part, DTDM0.8 part, CZ2 part; 5 parts in zinc oxide; 1.5 parts of stearic acid; 2 parts of antioxidant 4010NAs, NBC2 part, RD2 part; Compounded rubber dispersant A T-B1.5.

Embodiment 2, a kind of rubber shock-absorbing gum cover, its gum base ingredients content proportioning is by weight ratio: 1502100 parts in styrene-butadiene rubber(SBR); 60 parts of carbon black N330; 0.6 part in vulcanizing agent sulphur; TM monex TD0.7 part, TETD1.2 part, DTDM0.8 part, CZ1.8 part; 5 parts in zinc oxide; 1.5 parts of stearic acid; 2 parts of antioxidant 4010NAs, NBC2 part, RD2 part; Compounded rubber dispersant A T-B2 part.

The preparation method of embodiment 3, a kind of rubber shock-absorbing gum cover, according to the set of dispense ratio of the rubber shock-absorbing gum cover of embodiment 1, step is as follows:

The first step is mixing

Carry out in mixing roll, namely adopt 35 liter Banbury mixeies, capacity coefficient 0.7 is put into styrene-butadiene rubber(SBR) 1502 in the Banbury mixer, and 70 ℃ of banburying chamber's temperature add anti-aging agent, zinc oxide, stearic acid, compounded rubber dispersant A T-B after mixing 1～2 minute; 90 ℃ of temperature, add carbon black after mixing 2～3 minutes; 120 ℃ of temperature, mixing 7～8 minutes binder removals, dump temperature is below 140 ℃; Add vulcanizing agent sulphur and promotor in mill behind the sizing material binder removal, 50～60 ℃ of mill roller temperature, the speed ratio of front and back transfer roller is 1: 22～24; Roll spacing 5～6mm, the triangle bag is played 3～4 times in reinforced back, and 0.5～1mm is transferred in roll spacing, and thin-pass 2～3 times is put sheet under thick roll spacing 5～6mm, water cooling excessively, film hangs over the shelf fan and dries up and deposit.

The second step preforming process

Accurate preform machine is preheated to 55 ℃ of body temperatures, 65 ℃ of head temperatures, 75 ℃ of shape of the mouth as one speaks temperature are extruded the limit with film edge and are cut out cylindric compound blank, park more than 24 hours, change vulcanization process over to.

The 3rd step sulfuration process

With the mould of putting into compound blank push 165～170 ℃ vacuumized the vulcanizer press vulcanization 4～5 minutes, time is released mould automatically and opens mould automatically to the postcure machine, the rubber shock-absorbing gum cover of sulfidization molding is ejected automatically, repair unnecessary glue limit and prepare satisfactory damping gum cover.

The performance index of the rubber shock-absorbing gum cover of the present invention CTI of mechanism are after testing pressed the detection of IEC62321:2008Ed.1 method, reach the standard (demanding standard before this standard mesh) of Japanese honda company, its test index and this standard and European Union environmental protection standard testing data such as table 1:

The The performance test results of table 1 rubber shock-absorbing gum cover of the present invention

As can be seen from the above table, rubber shock-absorbing gum cover tensile strength provided by the invention is big, and the elongation height is out of shape for a short time, and ageing-resistant performance is good, and heavy metal content is low, environmental protection and energy saving.

Claims

1. rubber shock-absorbing gum cover is characterized in that: the component that comprises following weight part:

100 parts in styrene-butadiene rubber(SBR);

55～60 parts of carbon blacks;

0.5～0.6 part in sulphur;

4～4.5 parts of promotor;

5～6 parts in zinc oxide;

1.5～2 parts of stearic acid;

Antioxidant 4010NA, NBC, RD5～7 part;

Compounded rubber dispersant A T-B1.5～2 parts.

2. rubber shock-absorbing gum cover according to claim 1, it is characterized in that: described promotor is the mixture of TMTD, TETD, DTDM, CZ, wherein TMTD0.7 part, TETD0.7 part, DTDM0.8 part, CZ2 part.

3. rubber shock-absorbing gum cover according to claim 1 and 2 is characterized in that: described anti-aging agent is that 4010NA, NBC, RD are with the mixture of arbitrary proportion.

4. the preparation method of a rubber shock-absorbing gum cover as claimed in claim 1 or 2, it is characterized in that: comprise the following steps: that (1) is mixing: styrene-butadiene rubber(SBR) is put in the Banbury mixer, 60～80 ℃ of banburying chamber's temperature add anti-aging agent, promoting agent, compounded rubber dispersant A T-B after mixing 1～2 minute; 80～100 ℃ of temperature, add carbon black after mixing 2～3 minutes; 100～120 ℃ of temperature, mixing 7～8 minutes binder removals, dump temperature is below 140 ℃; Add vulcanizing agent and promotor in mill behind the sizing material binder removal, mill roller temperature is below 50 ℃, roll spacing 5～6mm, the triangle bag is played 3～4 times in reinforced back, and 0.5～1mm is transferred in roll spacing, thin-pass 2～3 times, put sheet under thick roll spacing 5～6mm, cross water cooling, film hangs over the shelf fan and dries up and deposit;

(2) preforming process: with accurate preform machine preheating, 50～60 ℃ of body temperatures, 60～65 ℃ of head temperatures, 65～75 ℃ of shape of the mouth as one speaks temperature are extruded the limit with film edge and are cut out cylindric compound blank, park more than 24 hours, change vulcanization process over to;

(3) sulfuration process: the mould that will put into compound blank push 165～170 ℃ vacuumized the vulcanizer press vulcanization 4～5 minutes, time is released mould automatically and opens mould automatically to the postcure machine, the rubber shock-absorbing gum cover of sulfidization molding is ejected automatically, repair unnecessary glue limit and prepare the damping gum cover.