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Novel high-elasticity polyurethane anti-collision buffer block for sea port

A buffer block, polyurethane technology, applied in the field of polyurethane, can solve the problems of the waste tires are not beautiful enough, the size of the waste tires cannot be customized, and the ship protection is not in place, so as to reduce maintenance costs and use costs, prolong time, and reduce pressure. Effect

Inactive Publication Date: 2019-10-22
ANHUI SANCAI IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But waste tires are not beautiful enough, and the size of waste tires cannot be customized according to the size of the ship and the actual situation of the port, so the protection of the ship is not in place

Method used

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  • Novel high-elasticity polyurethane anti-collision buffer block for sea port
  • Novel high-elasticity polyurethane anti-collision buffer block for sea port
  • Novel high-elasticity polyurethane anti-collision buffer block for sea port

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A new type of high elastic polyurethane seaport and military port anti-collision buffer block preparation process, see figure 1 Process flow chart, proceed as follows:

[0028] Weigh 50 parts of polyether polyols and 75 parts of mixed polyether polyols and put them into a rotary evaporator, rotate them at a temperature of 105° C. for 2.5 hours, and then cool them down to room temperature for later use.

[0029] Pour the dried polyether polyol into the reaction attachment, then add 50 parts of modified MDI to the reaction kettle, mix the polyether polyol and modified MDI evenly, and then react at a temperature of 70°C for 2-3 hours, And take a sample every 15min, calculate the isocyanate content with the titration method, follow up the reaction progress, stop the reaction when the isocyanate content is 11%, obtain the polyurethane prepolymer, prepolymer is defoamed with the rotary evaporator, degassing The foaming temperature is 35°C, and the defoamed polyurethane prepo...

Embodiment 2

[0034] The reaction time was controlled, and the reaction was stopped when the isocyanate content was 8%, and the other preparation processes were the same as in Example 1.

Embodiment 3

[0036] Control the reaction time, stop the reaction when the isocyanate content is 15%, and other preparation processes are the same as in Example 1.

[0037] The polyurethane buffer blocks prepared in the above three examples were tested for mechanical properties, mainly testing the hardness, tensile strength, elongation at break and tear strength of the polyurethane elastomer. The measured data are shown in Table 1.

[0038] Table 1

[0039]

[0040]

[0041] Observing Table 1, the following conclusions can be drawn: the content of isocyanate has an effect on tensile strength, elongation at break, tear strength and Shore A hardness. Tensile strength increases with the increase of isocyanate content; elongation at break decreases with the increase of isocyanate content; tear strength increases with the increase of isocyanate content; The Shore A hardness increases with the increase of isocyanate content.

[0042] The Shore A hardness of the rubber is 86, the hardness...

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Abstract

The invention relates to a preparation process for a novel high-elasticity polyurethane anti-collision buffer block for a sea port. The preparation process comprises the following concrete steps: stepA, drying polyether polyol; step B, preparing a polyurethane prepolymer; step C, synthesizing polyurethane; and step D, trimming polyurethane. The polyurethane buffer block has the advantages of moderate hardness, good elasticity, controllable shape and anti-aging performance, and is an ideal anti-collision buffer block.

Description

technical field [0001] The invention relates to the field of polyurethane, in particular to a preparation process of a novel high-elastic polyurethane anti-collision buffer block for harbors. Background technique [0002] Seaports often dock ships, and the braking performance of ships is not like cars and other road vehicles. They cannot stop at any time and be precisely controlled. Due to the fluidity of water, ships are easy to collide with the port, resulting in paint on the surface of the ship. The damage and fall will even cause damage to the hull in severe cases, which will have a negative impact on the service life of the ship. [0003] Some cushioning items, such as waste tires, are often set up on the shore of the harbor to reduce the damage to the hull of the port. However, waste tires are not beautiful enough, and the size of waste tires cannot be customized according to the size of the ship and the actual situation of the port, so the protection of the ship is n...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/76C08G18/66C08G18/48C08G18/38C08G18/10C08G18/22E02B3/26
CPCC08G18/10C08G18/222C08G18/227C08G18/48C08G18/7671E02B3/26C08G18/3814Y02A30/30
Inventor 许逸贤
Owner ANHUI SANCAI IND & TRADE
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