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Low-hardness pouring polyurethane rubber roller and production method thereof

A polyurethane, low-hardness technology, applied in the low-hardness cast polyurethane rubber roller and its production field, can solve the problem that the A material and the B material cannot achieve an accurate ratio, and improve the tensile strength and solvent resistance, turning and Good grinding performance

Inactive Publication Date: 2012-12-05
MAANSHAN TIANXIN ROLL IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem existing in the prior art that during the production process of pouring low-hardness polyurethane rubber rollers in the pouring machine, due to the insufficient amount of material B spit out, the exact ratio of material A and material B in the pouring machine cannot be achieved, the present invention provides A low-hardness casting polyurethane rubber roller and its production method are disclosed, which can realize the precise proportioning of material A and material B in the pouring process, and the quality of the polyurethane rubber roller produced and processed is stable and the pass rate is high

Method used

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  • Low-hardness pouring polyurethane rubber roller and production method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051]The production method of the low-hardness casting type polyurethane rubber roller of present embodiment 1, its steps are:

[0052] (1) Preparation of material A and material B

[0053] 1) Weigh 86kg of polyester polyol and 3.44kg of auxiliary material 1 calcium carbonate with a particle size of 400 mesh or more, stir well, grind twice with a colloid mill, then put it into the reaction kettle, stir and vacuumize at 110°C for dehydration After 1.5 hours, cool down to below 70°C for later use;

[0054] 2) Weigh about 17.7kg of isocyanate TDI and put it into the above reaction kettle, control the reaction temperature at 90~100°C, stir and vacuumize for 2 hours to obtain material A;

[0055] 3) Put the A material prepared in step 2) into the A tank corresponding to the elastomer pouring machine, stir again and evacuate for 1-3 hours, and set aside;

[0056] 4) Weigh 10.1kg of vulcanizing agent MOCA and 6.96kg of BBP, mix them, melt them at 110°C, put them into tank B of the...

Embodiment 2

[0076] The production method of the low-hardness casting type polyurethane rubber roller of present embodiment 2, its steps are:

[0077] (1) Preparation of material A and material B

[0078] 1) Weigh 45kg of polyε-caprolactone and 1.8kg of auxiliary material 1 calcium carbonate with a particle size of more than 400 meshes, stir well, grind twice with a colloid mill, put them into the reaction kettle, and stir and pump at 110°C Vacuum dehydration for 1.5 hours, cooled to below 70°C for later use;

[0079] 2) Weigh about 9.26kg of isocyanate TDI and put it into the above reaction kettle, control the reaction temperature at 90~100°C, stir and vacuumize for 2 hours to obtain material A;

[0080] 3) Put the A material prepared in step 2) into the A tank corresponding to the elastomer pouring machine, stir again and evacuate for 1-3 hours, and set aside;

[0081] 4) Weigh 5.32 kg of vulcanizing agent MOCA and 4.48 kg of BBP, mix them, melt them at 110°C and put them into tank B o...

Embodiment 3

[0101] (1) Preparation of material A and material B

[0102] 1) Weigh 125kg of polyester polyol and 5kg of auxiliary material 1 calcium carbonate with a particle size above 450 mesh, stir well, grind twice with a colloid mill, put it into the reaction kettle, stir and vacuum dehydrate at 110°C for 1.5 Hours, cooled to below 70°C for later use;

[0103] 2) Weigh about 25.73kg of isocyanate TDI and put it into the above reaction kettle, control the reaction temperature at 90~100°C, stir and vacuumize for 2 hours to obtain material A;

[0104] 3) Put the A material prepared in step 2) into the A tank corresponding to the elastomer pouring machine, stir again and evacuate for 1-3 hours, and set aside;

[0105] 4) Weigh 14.6kg of vulcanizing agent MOCA and 25.7kg of BBP, mix them, melt them at 110°C, put them into tank B of the pouring machine, stir and vacuumize for 2 hours, and obtain material B for later use;

[0106] (2) Roll core preparation

[0107] Select the metal roller...

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Abstract

The invention discloses a low-hardness pouring polyurethane rubber roller and a production method thereof, and belongs to the field of production processes of polyurethane rubber rollers. The polyurethane rubber roller comprises a material A and a material B which is 16 to 26 percent of the weight of the material A, wherein the material A comprises a reaction product of polyalcohol and isocyanate toluene diisocynate (TDI) and calcium carbonate; the material B comprises diaminodiphenyl-methane (MOCA) serving as a vulcanizing agent and butyl benzyl phthalate (BBP) serving as a plasticizer; according to the material A, a mass ratio of the polyalcohol to the calcium carbonate to the isocyanate TDI is 100:4:(8-22); and according to the material B, a mass ratio of the vulcanizing agent MOCA to the BBP is (1-3):2. By the production method, the accurate proportioning of the material A and the material B in the pouring process can be realized, and the produced low-hardness pouring polyurethane rubber roller is stable in quality and high in yield.

Description

technical field [0001] The invention belongs to the field of production technology of polyurethane rubber rollers, and more specifically relates to a low-hardness castable polyurethane rubber roller and a production method thereof. Background technique [0002] There are two production methods for low-hardness cast polyurethane rubber rollers: one is the traditional manual pouring molding method; the other is the continuous casting molding method with an elastomer casting machine. combine figure 1 , the manual pouring molding method has the following deficiencies: [0003] (1) Since raw materials and auxiliary materials (fillers, plasticizers, etc.) are basically manually operated in open containers, the product is easily scrapped due to artificial mechanical air bubbles, and the production pass rate is only about 87%; [0004] (2) Some raw materials and auxiliary materials will volatilize harmful gases when reacting, which will affect the health of production workers and ...

Claims

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Application Information

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IPC IPC(8): C08G18/76C08G18/42C08K3/26C08K5/12C08K5/18B29C39/10B29C39/22
Inventor 凌立耿炜婧孙开金
Owner MAANSHAN TIANXIN ROLL IND
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