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Preparation method of HPU plastic and construction process of HPU site

A technology of plastics and production methods, applied in the field of HPU plastic production and construction technology of HPU sites, can solve the problems of high production safety requirements, low rebound rate, long processing cycle, etc., and achieve curing speed and product quality. Effects, improved compression recovery and rebound rates, effects that are easy to add and manipulate

Inactive Publication Date: 2016-12-07
山东世纪联合新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When used on site, the plastic runway can be paved by mixing and stirring the components A and B according to a certain ratio. This traditional process of producing runway rubber is not only complicated in processing technology and long in processing time, but also relatively high in cost. Highly toxic TDI has high production safety requirements, and there is also a risk of implosion during the polymerization reaction
[0004] Chinese published patent CN103387652 discloses a preparation method of environmentally friendly polyurethane plastics for runways. MDI and polyether polyols are used to prepare polyurethane prepolymers, which solves the problem that TDI materials used in traditional runways are highly toxic and harmful to humans and the environment. And its Shore A hardness is 55, the tensile strength is 4.0MPa, and the tear strength is 25kN m -1 The elongation rate is 450%, and the rebound rate is 42%. Among them, the rebound rate of this product is relatively low, and its compression recovery rate is poor through experiments, which can only reach 95%. MDI has a low reaction rate, which increases the construction time
[0005] Chinese published patent CN103554406 discloses an environment-friendly polyurethane plastic runway compound, which is obtained by modifying polyether with acid resin and then mixing it with MDI. Since MDI is directly used as a drier, TDI and heavy metals are not added. Catalyst, safe and environmentally friendly, simplifies the production process, but the springback rate of the plastic runway prepared by it is up to 40%, the compression recovery rate is up to 98.3%, the elongation at break is up to 350%, and the tensile strength is 2.75MPa. It can be seen that its products The mechanical properties are poor
[0006] Chinese patent CN1295288 discloses a pavement material for sports venues prepared by nano-montmorillonite / polyurethane plastic. Since polyether polyol is modified by adding nano-montmorillonite, the mechanical properties of the elastomer are improved and the service life is improved. It improves the extension and reduces the production cost, but the highest rebound rate is only 33%, the highest compression recovery rate is 99%, the highest elongation at break is 305%, and the highest tensile strength is 3.5MPa. needs to be improved

Method used

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  • Preparation method of HPU plastic and construction process of HPU site
  • Preparation method of HPU plastic and construction process of HPU site
  • Preparation method of HPU plastic and construction process of HPU site

Examples

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Embodiment 1

[0041] (1), the preparation of isocyanate component A: 60 parts of starters are the polyether polyol that the hydroxyl value that ethylene glycol and propylene oxide ring-opening polymerization obtains is 24, and molecular weight is 4675 is added in the reactor, at 85 Stir at ℃, vacuum dehydrate and degas, cool to 40℃, add 20 parts of diphenylmethane diisocyanate and 5 parts of isophordione diisocyanate, react at 70℃ for 2h, and cool to room temperature;

[0042](2), preparation of polyether component B: 5 parts of mixed polyether polyols (by accounting for 20% polyether polyol b1 of the total amount of mixed polyether polyols and accounting for 80% of total polyether polyols b2 composition, wherein, b1 is starting from glycerol, homopolyether polyol of propylene oxide, molecular weight 3500, functionality 3, hydroxyl value 48.1mgKOH / g, b2 is starting from dipropylene glycol, homopolyether polyol of propylene oxide Polyether polyol, molecular weight 4000, functionality 2, hydr...

Embodiment 2

[0045] (1) Preparation of isocyanate component A: Add 75 parts of polyether polyol with a hydroxyl value of 30 and a number average molecular weight of 5610 obtained by the ring-opening polymerization of glycerin and propylene oxide as an initiator into the reaction kettle, and heat Stir under vacuum, dehydrate and degas under vacuum, cool to 45°C, add 30 parts of diphenylmethane diisocyanate and 15 parts of isophordione diisocyanate, react at 80°C for 3 hours, and cool to room temperature;

[0046] (2), preparation of polyether component B: 30 parts of mixed polyether polyols (polyether polyol b1 accounting for 80% of the total amount of mixed polyether polyols and polyether polyols accounting for 20% of the total amount b2 composition, wherein, b1 is starting from glycerol, homopolyether polyol of propylene oxide, molecular weight 3500, functionality 3, hydroxyl value 48.1mgKOH / g, b2 is starting from dipropylene glycol, homopolyether polyol of propylene oxide Polyether polyo...

Embodiment 3

[0049] (1) Preparation of isocyanate component A: Add 68 parts of polyether polyols with a hydroxyl value of 40 and a number average molecular weight of 2800 obtained by ring-opening polymerization of 1,2-propylene glycol and propylene oxide as an initiator into the reactor , stirred at 100°C, vacuum dehydrated and degassed, cooled to 45°C, added 25 parts of diphenylmethane diisocyanate and 10 parts of isophordione diisocyanate, reacted at 70°C for 2 hours, and cooled to room temperature;

[0050] (2), preparation of polyether component B: 18 parts of mixed polyether polyols (by accounting for 60% polyether polyol b1 of the total amount of mixed polyether polyols and accounting for 40% polyether polyols of total amount) b2 composition, wherein, b1 is starting from glycerol, homopolyether polyol of propylene oxide, molecular weight 3000, functionality 3, hydroxyl value 56.1mgKOH / g, b2 is starting from dipropylene glycol, homopolyether polyol of propylene oxide Polyether polyol,...

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Abstract

The invention discloses a preparation method of HPU plastic and a construction process of a HPU site. The HPU plastic is obtained by mixing reaction of raw materials containing an isocyanate component A and a polyether component B, the isocyanate component A is composed of, by weight, 20-30% of diphenyl methane diisocyanate, 5-15% of isophorone diisocyanate and 60-75% of polyether polyol alpha, and the polyether component B is composed of, by weight, 5-30% of mixed polyether polyol, 10-30% of paraffin, 2-6% of chain extender, 0.02-0.1% of antiager, 30-60% of filler, 1-5% of pigment and 0.1-1% of hollow microsphere. The HPU plastic has good mechanical performance and high elasticity, compression recovery rate is up to higher than 99%, and resilience rate is up to higher than 45%.

Description

technical field [0001] The invention relates to a manufacturing method of HPU plastic and a construction technology of HPU field, which are mainly used in polyurethane plastic sports fields (including track and court). Background technique [0002] Polyurethane plastic runway is a kind of castable polyurethane elastomer, which is widely used in laying various sports venues, and is currently an internationally recognized pavement material for sports venues. [0003] Polyurethane plastic track is usually obtained by mixing and stirring isocyanate component (often called A component) and polyether component (often called B component). Polymerization reaction, B component usually contains polyether, chain extender, plasticizer, filler, pigment, ultraviolet absorber, antioxidant, water absorbing agent, the formula and production process of B component directly affect the color of the runway and its physical properties. When used on site, the plastic runway can be paved by mixin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L91/06C08K13/02C08K5/134C08K3/34C08G18/66C08G18/48
CPCC08G18/4804C08G18/4837C08G18/6685C08L75/08C08L91/06C08K13/02C08K5/1345C08K3/34
Inventor 路玲张珍
Owner 山东世纪联合新材料科技有限公司
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