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Polyurethane composition for automobile sunroof cushion block and preparation method thereof

A technology for automobile sunroofs and buffer pads is applied in the application field of polyurethane to achieve the effects of long service life, improved sound insulation and noise reduction performance, and flexible molecular design.

Active Publication Date: 2018-07-24
SHANDONG INOV POLYURETHANE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From the perspective of engineering mechanics, it can play a certain role in cushioning and shock absorption, but the material used has not changed in essence.

Method used

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  • Polyurethane composition for automobile sunroof cushion block and preparation method thereof
  • Polyurethane composition for automobile sunroof cushion block and preparation method thereof
  • Polyurethane composition for automobile sunroof cushion block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] A component:

[0036]

[0037] B component:

[0038]

[0039]

[0040] (1) Preparation of component A: the measured polyether polyol A, POP 36 / 28, DEOA, DC2525, A-1, A-33, H 2 Put O into the reaction kettle in turn, set the speed at 60 rpm, stir for 1 hour, take a sample for inspection, meet the process parameters, and produce satisfactory foam to obtain component A.

[0041] (2) Preparation of component B: Put the polyether polyol A and SD-75 based on the formula into the reaction kettle at room temperature, raise the temperature to about 80°C, stir, vacuumize and dehydrate and degas for 2 hours, cool down to about 10°C and add Pure MDI, MDI-50, and carbodiimide-modified MDI are reacted at 80°C for 2 hours. After the detection reaches the set NCO% content value, cool down to about 10°C, add polymeric MDI and phosphoric acid, and stir well.

[0042] (3) When in use, the components A and B are mixed and injected in a weight ratio of 100 / 80, and the mold is ope...

Embodiment 2

[0044] A component:

[0045]

[0046] B component:

[0047]

[0048] (1) Preparation of component A: the measured polyether polyol A, KGP 545, TEA, DEG, DC2525, A1, A33, H 2 O is put into the reaction kettle one by one, set the rotation speed at 100 rpm, stir for 2 hours, take a sample for inspection, meet the process parameters, and produce satisfactory foam to obtain component A.

[0049] (2) Preparation of component B: put the polyether polyol A and SD-75 based on the formula into the reaction kettle at room temperature, raise the temperature to about 100°C, stir, vacuumize, dehydrate and degas for 3 hours, cool down to about 40°C and add For pure MDI and MDI-50, react at 85°C for 3 hours. After the detection reaches the set NCO% content value, cool down to about 40°C, add polymeric MDI and phosphoric acid, and stir well.

[0050] (3) When in use, the components A and B are mixed and injected in a weight ratio of 100 / 60, and the mold is opened in 6 minutes to obtain...

Embodiment 3

[0052] A component:

[0053]

[0054] B component:

[0055] Polyether polyol A: 25

[0056] Pure MDI: 70

[0057] Benzoyl chloride: 10ppm

[0058] (1) Preparation of component A: the measured polyether polyol A, DEOA, 1,4-BG, DC2525, A-33 and H 2 Put O into the reaction kettle in turn, set the speed at 80 rpm, stir for 1 hour, take a sample for inspection, meet the process parameters, and produce satisfactory foam to obtain component A.

[0059](2) Preparation of component B: put the polyether polyol A and SD-75 based on the formula into the reaction kettle at room temperature, raise the temperature to about 90°C, stir, vacuum dehydrate and degas for 2 hours, cool down to about 20°C and add For pure MDI and MDI-50, react at about 80°C for 3 hours. After the detection reaches the set NCO% content value, cool down to about 20°C, add polymeric MDI and benzoyl chloride, and stir well.

[0060] (3) When in use, the components A and B are mixed and injected in a weight ratio...

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Abstract

The invention relates to a polyurethane composition for an automobile sunroof buffer pad, and a preparation method of the polyurethane composition, and belongs to the technical field of polyurethane application. The polyurethane composition for the automobile sunroof buffer pad comprises a component A and a component B; the weight percentage of the component A to that of the component B is 100:(40-80); the component A comprises polyether polyol A, polymer polyol, a chain extender, a crosslinking agent, a foaming agent / foam stabilizer and a catalyst; the component B comprises polyether polyol A, isocyanate, an opening agent and a storage stabilizing agent. The automobile sunroof buffer pad made of the polyurethane composition has excellent shock absorption, sound prevention and noise reduction effects; meanwhile, the invention further provides the simple, easy, energy-saving and environment-friendly preparation method.

Description

technical field [0001] The invention relates to a polyurethane composition used for automobile sunroof cushion blocks and a preparation method thereof, belonging to the technical field of polyurethane applications. Background technique [0002] Various cushion blocks are often used when limiting the position of auto parts, and the travel limit of the car sunroof sunshade is also realized by the cushion block, so the cushion block is very important for the cushioning and shock absorption performance and sound insulation and noise reduction. High performance requirements. The material of the existing cushion blocks generally has the disadvantages of poor damping effect and insignificant noise reduction. [0003] Patent CN 202593241 U discloses a cushion block for an automobile sunroof, which improves the cushioning and shock absorption performance of the automobile sunroof mainly from the design of appearance and shape. From the perspective of engineering mechanics, it can p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/66C08G18/40C08G18/48C08G18/63C08G18/65
CPCC08G18/4072C08G18/4829C08G18/632C08G18/657C08G18/6688C08G2350/00C08G2110/0083
Inventor 徐军殷玉鹏孙清峰郭永生陈伟
Owner SHANDONG INOV POLYURETHANE
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