Vulcanization accelerator, environment-friendly latex sponge, preparation method and application

A technology of vulcanization accelerator and latex sponge, applied in the field of vulcanization accelerator, preparation, and environment-friendly latex sponge, can solve the problems of slow decomposition, limited application, poor stability of xanthate accelerator, etc., to improve thermal stability, Good response effect, the effect of eliminating unpleasant odors

Pending Publication Date: 2021-06-01
中胶永生东南亚乳胶制品股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Xanthate is a non-toxic, non-polluting, environment-friendly rapid vulcanization accelerator, its molecular structure is (R 1 is an alkyl or aryl group, Me is a metal atom Na, K, Zn, etc.), does not contain nitrogen atoms, and thus does not produce...

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] The present embodiment provides a kind of environment-friendly type latex product, comprises the raw material of following weight portion:

[0034] 100g of styrene-butadiene latex (based on dry rubber), 2g of sulfur, 1g of anti-aging agent, 2g of sodium silicofluoride, 0.5g of foaming agent, 3g of zinc oxide, 4g of vulcanization accelerator, wherein the vulcanization accelerator is silica-based xanthogen acid accelerator.

[0035] Its preparation method comprises the following steps:

[0036] (1) Preparation of silica-based xanthate accelerator

[0037] Take 100g of silicon dioxide and 1g of ammonium cerium nitrate and add it to dimethylformamide, stir and react at a temperature of 50°C for 0.5 hours, then add 40g of sodium hydroxide, stir at a temperature of 20°C for 1.5 hours, and then add 40g of Carbon disulfide, stirred at 35°C for 2 hours, filtered, washed and dried to obtain a silica-based xanthate accelerator.

[0038] (2) Preparation of latex sponge

[0039]...

Embodiment 2

[0044] The present embodiment provides a kind of environment-friendly type latex product, comprises the raw material of following weight portion:

[0045]Natural rubber latex 100g (calculated as dry rubber), potassium hydroxide 0.1g, sulfur 2.5g, anti-aging agent 1g, sodium silicofluoride 1g, foaming agent 1g, zinc oxide 2g, vulcanization accelerator 8g, wherein the vulcanization accelerator is two Silica based xanthate accelerator.

[0046] Its preparation method comprises the following steps:

[0047] (1) Preparation of silica-based xanthate accelerator

[0048] Take 100g of silicon dioxide and 5g of ammonium cerium nitrate and add dimethylformamide, stir and react at 60°C for 1 hour, then add 40g of sodium hydroxide, stir at 35°C for 0.5 hour, then add 76g of carbon disulfide , stirred at a temperature of 35° C. for 4 hours, filtered, washed and dried to obtain a silica-based xanthate accelerator.

[0049] (2) Preparation of latex sponge

[0050] The sulfur, anti-aging ...

Embodiment 3

[0055] The present embodiment provides a kind of environment-friendly type latex product, comprises the raw material of following weight portion:

[0056] Natural rubber latex 100g (calculated as dry rubber), potassium hydroxide 0.1g, sulfur 2.5g, anti-aging agent 1g, sodium silicofluoride 1g, foaming agent 1g, zinc oxide 2g, vulcanization accelerator 12g, wherein the vulcanization accelerator is two Silica based xanthate accelerator.

[0057] Its preparation method comprises the following steps:

[0058] (1) Preparation of silica-based xanthate accelerator

[0059] Take 100g of silicon dioxide and 3g of ammonium cerium nitrate and add dimethylformamide, stir and react at 50°C for 2 hours, then add 20g of sodium hydroxide, stir at 30°C for 2 hours, then add 50g of carbon disulfide , stirred at a temperature of 30° C. for 5 hours, filtered, washed and dried to obtain a silica-based xanthate accelerator.

[0060] (2) Preparation of latex sponge

[0061] The sulfur, anti-agin...

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PUM

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Abstract

The invention discloses a vulcanization accelerator, environment-friendly latex sponge, a preparation method and application. The vulcanization accelerator comprises 100 parts of silicon dioxide; 40-100 parts of strong base; 1-20 parts of cerium salt; and 40-100 parts of carbon disulfide. The preparation method comprises the step of loading xanthate on silicon dioxide. The environment-friendly latex sponge comprises 100 parts of latex, 1-2 parts of an anti-aging agent, 1-3 parts of sodium silicofluoride, 0.5-2 parts of a foaming agent, 4-25 parts of the vulcanization accelerator and the like. The preparation method comprises the following steps: preparing the auxiliary agents into dispersoid, mixing, stirring, injecting into a mold, gelling, vulcanizing, demolding, washing with water and drying. The prepared environment-friendly latex sponge can be used in the fields of furniture, automobiles or sanitation. The vulcanization accelerator provided by the invention is good in thermal stability, does not decompose after being stored for a long time at room temperature, does not release pungent smell, and is environment-friendly. The environment-friendly latex sponge is good in buffering effect and has excellent stretch resistance and rebound resilience.

Description

technical field [0001] The invention relates to the technical field of rubber modification, in particular to a vulcanization accelerator, an environment-friendly latex sponge, a preparation method and an application. Background technique [0002] Latex sponge is a kind of porous rubber material with a cell structure and the cell structure is all connected holes or most of the cells are connected and a small part is not connected. It is the type of latex product that consumes the largest amount of latex. Latex sponge has the characteristics of high elasticity, shock absorption, compression fatigue resistance, good bearing capacity, comfort and durability, so it is widely used in many aspects such as automobile industry, medical equipment, daily hygiene and sporting goods. Latex sponges usually need to add rubber accelerators during preparation. In the rubber industry, rubber accelerators are specifically vulcanization accelerators. Vulcanization accelerators can promote the v...

Claims

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Application Information

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IPC IPC(8): C08K9/12C08K3/36C08K5/38C08L7/02C08L9/08C08K13/06C08J9/04
CPCC08K9/12C08K3/36C08K5/38C08J9/04C08J9/009C08J2307/02C08J2309/08C08K13/06
Inventor 谭海生刘蔚林汪志芬李建斌
Owner 中胶永生东南亚乳胶制品股份有限公司
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