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Blend modified rubber material

A rubber material, blending and modification technology, applied in the field of rubber material manufacturing, can solve the problems of poor wet grip performance of PU tires, high PU price, and adhesion problems, etc., to improve wet grip performance and wear resistance The effect of improving and improving the wear resistance

Inactive Publication Date: 2015-06-24
梅法洪
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are many technical difficulties in the manufacture of full PU bias or radial tires. Although the trial production of sample tires is easy, it is very difficult to mass produce tire products with satisfactory performance and quality on a mature production line.
In general, the price of PU is higher than that of rubber. From the perspective of cost and technology, future research on PU tires can be considered to focus on the direction of PU tread / rubber carcass, but the bonding between PU tread and rubber carcass is very difficult. It is very difficult, because PU is a strong polar material, and the general-purpose rubber for the carcass is basically a weak polar or non-polar material. The adhesion of the two is a big problem, and the wet grip performance of PU tires is not good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Embodiment 1 (comparative embodiment)

[0068] 1. Synthesis of PU prepolymer

[0069] Component A:

[0070] 80 / 20TDI: 65g

[0071] PPG (1000): 135g

[0072] Total: 200g

[0073] Synthesis method: PPG is heated to 70-130°C for vacuum dehydration, and after cooling, TDI is added to react at 60-90°C to prepare a prepolymer, and -NCO is controlled at about 10%.

[0074] Component B:

[0075] MOCA: 45g

[0076] PPG (1000): 65g

[0077] Total: 110g

[0078] Mixing method: Heat and melt MOCA, then add PPG and mix evenly.

[0079] 2. Natural rubber material A formula

[0080] NR: 1000g

[0081] Zinc oxide: 50g

[0082] N330: 360g

[0083] Accelerator DM: 12g

[0084] Sulfur: 25g

[0085] Antiaging agent IPPD: 10g

[0086] Total: 1457g

[0087] The natural rubber is plasticized and kneaded to obtain the natural rubber material A.

[0088] 3. Take the PU material and mix it evenly in the ratio of A:B=200:110, vulcanize and mold it at 100°C, and then grind it into...

Embodiment 2

[0096] 1. Synthesis of PU prepolymer

[0097] 80 / 20TDI: 100g

[0098] 1,4-butanediol: 8g

[0099] PPG (1000): 198.5g

[0100] Synthesis method: PPG is heated to 70-130°C for vacuum dehydration, after cooling, add 1,4-butanediol to mix, add TDI and react at 60-90°C to prepare a prepolymer, and the -NCO is controlled at about 7.89%.

[0101] 2. Natural rubber formula

[0102] Natural rubber compound formula is with embodiment 1.

[0103] The natural rubber is plasticized and mixed to obtain the rubber material A.

[0104]3. Take 300g of PU prepolymer, add 25g of TMP, mix evenly, weigh 97.5g and add it to 1000g of natural rubber compound A, mix evenly, calender, and extrude to obtain compound B, PU accounts for 8.9% of the total.

[0105] 4. Vulcanization condition: 150℃×30min, strip rubber for compression test.

[0106] 5. Akron abrasion machine test results:

[0107] Compound A: 0.66mg / m (measured in Example 1)

[0108] Compound B: 0.45mg / m

[0109] It can be seen from...

Embodiment 3

[0111] 1. Synthesis of PU prepolymer (same as Example 2).

[0112] 2. Natural rubber compound formula (same as embodiment 1).

[0113] The natural rubber is plasticized and mixed to obtain the rubber compound A.

[0114] 3. Take 77.5g of PU prepolymer and add it to 800g of natural rubber compound A and mix evenly to obtain compound B1; then take 18.5g of MOCA and add it to 200g of natural rubber compound A and mix evenly to obtain compound B2. Then mix B1 and B2 evenly, calender, and extrude to obtain the rubber material B. PU accounts for 8.8% of the total.

[0115] 4. Vulcanization condition: 150℃×30min, strip rubber for compression test.

[0116] 5. Akron abrasion machine test results:

[0117] Compound A: 0.66mg / m (measured in Example 1)

[0118] Compound B: 0.43mg / m

[0119] It can be seen from the test results that by adding a total amount of 8.8% of the PU material to the natural rubber material A, the wear resistance can be increased by about 34.8%.

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PUM

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Abstract

The invention discloses a blend modified rubber material which contains one or a plurality of polyurethane (PU) rubbers and one or a plurality of other types of rubbers. The uncured PU rubber is compounded with other types of unvulcanized rubbers, and is cured or vulcanized to obtain the blend modified rubber material. The blend modified rubber material is composed of the polyurethane rubber (PU) and other rubbers. The PU material is utilized to enhance the abrasion resistance of the rubber, and the polyurethane rubber is blended with other types of rubbers to improve the tearing strength under high-temperature conditions, thereby enhancing the comprehensive properties of the rubber material.

Description

technical field [0001] The invention belongs to the technical field of rubber material manufacture, and in particular relates to a rubber material obtained by blending and modifying one or more polyurethane rubbers and one or more other types of rubber. Background technique [0002] Polyurethane rubber (hereinafter referred to as PU) is a polymer branched chain containing carbamate groups The series of elastic materials is the abbreviation of polyurethane rubber. Its wear resistance is particularly excellent. It is known as "wear-resistant rubber". Its wear resistance is several times that of other types of rubber (hereinafter referred to as rubber) (see The following table). [0003] Abrasion comparison between polyurethane rubber and several other rubbers [0004] material name Wear loss mg polyurethane rubber 0.5-3.5 natural rubber 146 SBR 177 Butyl rubber 205 NBR 44 Neoprene 280 PT...

Claims

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Application Information

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IPC IPC(8): C08L75/04C08L21/00C08J3/24
Inventor 梅法洪陈海棠
Owner 梅法洪
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