CN105384998A - Chlorinated rubber used for windshield wipers and preparation method for chlorinated rubber - Google Patents

Abstract

The invention discloses chlorinated rubber used for windshield wipers. The chlorinated rubber used for the windshield wipers is prepared from the following components in parts by weight: 60 parts of chloroprene rubber and 40 parts of natural rubber. According to the chlorinated rubber disclosed by the invention, the endurance of the existing windshield wipers to extreme climate can be enhanced and the physical property cannot be greatly decreased; the endurance of the windshield wipers when working in a place with big environment temperature difference is enhanced, and the chemical resistance and the ozone resistance of the windshield wipers are improved.

Description

For the chlorinated rubber and preparation method thereof of rain brush

Technical field

The present invention relates to a kind of chlorinated rubber for rain brush and preparation method thereof.

Background technology

At present, have windscreen wiper industry for Now before order, generally adopt natural rubber as the main material of windscreen wiper India-rubber strip, the physical properties Come using its excellence blows rain function for windscreen wiper provides excellent, but its weathering resistance, ozone-resistant and aging are poor, and the life-span is shorter.

Summary of the invention

Technical problem to be solved by this invention is the defect overcoming prior art, a kind of chlorinated rubber for rain brush is provided, it can strengthen existing rain brush can not make again physical properties decline to a great extent for the weather resistance of extreme climate, promote the weather resistance of wiper when the local work that envrionment temperature difference is large, improve its chemical resistant properties and ozone resistance.

In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of chlorinated rubber for rain brush, its component and each constituent mass part as follows:

Chloroprene rubber: 60 parts;

Natural rubber: 40 parts.

Further in order to allow the physical properties of this chlorinated rubber reach requirement, guarantee processibility and capacity requirements in addition, make the viscosity of chlorinated rubber, mobility, vulcanization rate and sulfuration Warm degree also must reach requirement by Shall simultaneously, the octadecanoic acid of its sulphur, the magnesium oxide of 2 mass parts, the zinc oxide of 5 mass parts and 2.5 mass parts also containing 2,2'-dithio-bis-benzothiazoles of 0.5 mass parts, 1 mass parts.

Further in order to improve its ozone and aging resistance better, it also contains the Microcrystalline Wax of the N-phenyl-2-naphthylamine of 1 mass parts, the N-phenyl-a-naphthylamine of 0.5 mass parts and 1 mass parts.

Present invention also offers a kind of preparation method of the chlorinated rubber for rain brush, the step of the method is as follows:

A () is got the raw materials ready according to each component and mass parts thereof;

B chloroprene rubber and natural rubber mixing are carried out banburying by ();

C () and then carry out sealed stirring, then carries out open banburying again;

D () stirring 3-5 minute, then carries out the dispersed sulphur of medicinal powder and becomes detection;

E () slice is rechecked again, obtain this chlorinated rubber.

Further, in described step (b), first by neoprene latex banburying preheating 3 minutes, add rubber compounding, obtain chloroprene rubber.

After have employed technique scheme, by weathering resistance and the ozone-resistant of chloroprene rubber excellence, the excellent resilience of aging combination natural rubber, increase strong Now have rain brush for extreme climate weather resistance again not Hui physical properties is declined to a great extent, promote the weather resistance of wiper when the local work that envrionment temperature difference is large, chlorinated rubber chemical resistant properties after improvement and the more original natural rubber excellence of ozone resistance, this feature makes product environment use out of doors, drench with rain by long sunshine, also the more domestic like product of Hui is slow for aging speed, work-ing life of same product also can the length come of more domestic like product, improving product competitive edge.

Embodiment

In order to make content of the present invention more easily be clearly understood, below according to specific embodiment, the present invention is further detailed explanation.

For a chlorinated rubber for rain brush, its component and each constituent mass part as follows:

Chloroprene rubber: 60 parts;

Natural rubber: 40 parts.

The octadecanoic acid of its sulphur, the magnesium oxide of 2 mass parts, the zinc oxide of 5 mass parts and 2.5 mass parts also containing 2,2'-dithio-bis-benzothiazoles of 0.5 mass parts, 1 mass parts.

It also contains the Microcrystalline Wax of the N-phenyl-2-naphthylamine of 1 mass parts, the N-phenyl-a-naphthylamine of 0.5 mass parts and 1 mass parts.

For a preparation method for the chlorinated rubber of rain brush, the step of the method is as follows:

A () is got the raw materials ready according to each component and mass parts thereof;

B chloroprene rubber and natural rubber mixing are carried out banburying 30 seconds by ();

C () and then carry out the sealed stirring of 40 seconds, then carries out the open banburying of 90 seconds again;

D () stirring 3-5 minute, then carries out the dispersed sulphur of medicinal powder and becomes detection;

E () slice is rechecked again, obtain this chlorinated rubber.

In described step (b), first by neoprene latex banburying preheating 3 minutes, add rubber compounding, obtain chloroprene rubber.

The key technical indexes of chlorinated rubber prepared by the present embodiment is as follows through detecting:

1、MH：10-15(Ibf-in)；

2、ML：0.7-1.3(Ibf-in)；

3, TS1:60-80 (Sec second);

4, TC90:115-135 (Sec second);

5、T：165°；

6, ozone Ce Shi≤72 little Time, chlorinated rubber strip is without be full of cracks;

7,72 hours 70 DEG C of burn-in tests, elongation change rate≤10%.

Above-described specific embodiment; technical problem, technical scheme and beneficial effect that the present invention solves are further described; be understood that; the foregoing is only specific embodiments of the invention; be not limited to the present invention; within the spirit and principles in the present invention all, any amendment made, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (5)

1., for a chlorinated rubber for rain brush, it is characterized in that: its component and each constituent mass part as follows:

Chloroprene rubber: 60 parts;

Natural rubber: 40 parts.

2. the chlorinated rubber for rain brush according to claim 1, it is characterized in that: the octadecanoic acid of its sulphur, the magnesium oxide of 2 mass parts, the zinc oxide of 5 mass parts and 2.5 mass parts also containing 2,2'-dithio-bis-benzothiazoles of 0.5 mass parts, 1 mass parts.

3. the chlorinated rubber for rain brush according to claim 1 and 2, is characterized in that: it also contains the Microcrystalline Wax of the N-phenyl-2-naphthylamine of 1 mass parts, the N-phenyl-a-naphthylamine of 0.5 mass parts and 1 mass parts.

4., as claimed any one in claims 1 to 3 for a preparation method for the chlorinated rubber of rain brush, it is characterized in that the step of the method is as follows:

A () is got the raw materials ready according to each component and mass parts thereof;

B chloroprene rubber and natural rubber mixing are carried out banburying by ();

C () and then carry out sealed stirring, then carries out open banburying again;

D () stirring 3-5 minute, then carries out the dispersed sulphur of medicinal powder and becomes detection;

E () slice is rechecked again, obtain this chlorinated rubber.

5. the preparation method of the chlorinated rubber for rain brush according to claim 4, is characterized in that: in described step (b), first by neoprene latex banburying preheating 3 minutes, adds rubber compounding, obtains chloroprene rubber.