Clay with water suspension effect and processing formula

Abstract

The invention discloses clay with a water suspension effect and a processing formula, and relates to the technical field of polymer composite materials and child toy materials, the raw materials of the clay comprise the following components by weight: 10-20 parts of a leavening agent; 10 to 20 parts of rubber powder; 20-25 parts of vegetable oil; 70 to 80 parts of starch; 15 to 20 parts of polymer low molecules; 1-5 parts of a pigment; the clay does not contain boron, has hydrophobicity, can float on the water surface after being formed, and supports repeated shaping and infinite repeated use. The rubber powder is water-soluble polymer rubber powder, a unique hydrophobic formula adopts vegetable oil and polymer low molecules, so that the density of a finished product is controlled to be 0.9-1.0 g / cm < 3 >, the product can stably float on the water surface, the surface of the product is incompatible with water, and the interactivity and education functions of toys, such as ship simulation and buoyancy experiments, are expanded; a compound system of the rubber powder and the starch is combined with a standing process, so that the clay is not cracked and hardened after being stored for a long time or the temperature is changed between-10 DEG C and 40 DEG C.

Description

Technical Field

[0001] The present invention relates to the technical fields of polymer composites and children's toy materials, and particularly to a clay with a water suspension effect and a processing formula. Background Art

[0002] As a plastic material widely used in the fields of children's education, art creation, and entertainment, the performance and safety of lightweight clay directly affect the user experience and product value. Traditional lightweight clay mostly uses borax or boron-containing compounds as cross-linking agents, and forms a gel structure through the complexation of borate ions and polymers. Although such a formula endows the material with certain ductility and shaping ability, it has significant defects;

[0003] Safety hazards: Boron, especially borax, has been proven to be toxic. Long-term exposure may cause skin allergies, respiratory irritation, and even the risk of cumulative poisoning in children. The EU EN71-3 standard and China's GB 6675.4-2014 both set strict limits on the boron migration amount in toys ≤ 300 mg / kg, and traditional light clay generally has the problem of excessive boron due to the process relying on boron cross-linking;

[0004] Easy hardening and non-reusability: After traditional light clay is exposed to air, due to water evaporation and borate crystallization, it usually gradually hardens after 1-2 weeks of use, losing its plasticity and being unable to be reshaped. This not only increases the use cost but also generates a large amount of waste materials, violating the environmental protection concept;

[0005] Functional singularity: Existing products are mostly limited to use in land scenarios and lack interactive design with the water environment. For a few products that try to add water repellents, due to unreasonable formulas, the material density is often too large > 1.2 g / cm 3 and it sinks, or the water repellent performance is unstable with a water absorption rate > 15%, and it cannot achieve long-term floating

[0006] In view of the above-mentioned technical problems, a clay that completely does not contain boron elements, meets the safety standards for children's toys; uses food-grade vegetable oil and non-toxic pigments, and through the synergistic effect of polymer low molecules and vegetable oil, the clay remains soft and plastic for a long time, supports repeated shaping, and reduces material waste is designed to solve the technical problems of boron element safety hazards, hardening and inconvenient reuse, and functional singularity. Summary of the Invention

[0007] In view of the deficiencies of the prior art, the present invention provides a clay with a water suspension effect and a processing formula, which solves the technical problems mentioned in the above background art.

[0008] To achieve the above objectives, the present invention is realized through the following technical solutions: A clay with a water suspension effect, the raw materials of the clay include the following components by weight:

[0009] 10 - 20 parts of leavening agent

[0010] 10 - 20 parts of rubber powder

[0011] 20 - 25 parts of vegetable oil

[0012] 70 - 80 parts of starch

[0013] 15 - 20 parts of low - molecular polymer

[0014] 1 - 5 parts of pigment;

[0015] The clay does not contain boron element and has hydrophobicity. After molding, it can float on the water surface and support repeated shaping and unlimited reuse.

[0016] Preferably, the rubber powder is a water - soluble polymer rubber powder, the vegetable oil is a food - grade mineral oil or synthetic ester oil, and the low - molecular polymer is a polyolefin or polyester material with a molecular weight lower than 5000.

[0017] Preferably, the density of the clay is 0.8 - 1.0 g / cm 3 , and its water absorption rate is lower than 5% after standing in water for 24 hours, and its surface is incompatible with water.

[0018] Preferably, it includes the following steps:

[0019] (1) Weigh each raw material according to the ratio;

[0020] (2) Heat and stir the rubber powder and vegetable oil at 50 - 70 °C until completely melted to form a glue solution;

[0021] (3) Add the leavening agent, starch, low - molecular polymer and pigment to the glue solution in sequence, put it into a kneading machine and stir at a speed of 30 - 50 r / min for 30 - 60 minutes to form a uniform glue material;

[0022] (4) Let the glue material stand in a sealed environment for 6 - 8 hours;

[0023] (5) Mould the glue material into a preset shape through an extruder, cut it and assemble and package.

[0024] Preferably, the heating and stirring temperature in step (2) is 60 °C, and the stirring time of the kneading machine in step (3) is 45 minutes.

[0025] Preferably, the clay remains soft and plastic after being placed in an environment of 25 °C for 12 months, without cracking or hardening.

[0026] Preferably, it is applied to children's creative toys, floating models on water or scientific and educational utensils, and stimulates the creativity of users through the combination of buoyancy and resistance.

[0027] Preferably, the leavening agent is sodium bicarbonate or food-grade foaming microspheres, and the pigment is non-toxic color paste or natural mineral pigment.

[0028] Beneficial effects

[0029] The present invention provides a clay with a floating effect on water and its processing formula. The formula of the present invention is completely free of boron elements, avoiding the toxicity risk of traditional light clay and meeting the safety standards for children's toys; using food-grade vegetable oil and non-toxic pigments to reduce the risks of allergies and environmental pollution; through the synergistic effect of polymer low molecules and vegetable oil, the clay remains soft and plastic for a long time, supports repeated shaping, and reduces material waste; the unique hydrophobic formula uses vegetable oil + polymer low molecules to control the density of the finished product at 0.9 - 1.0 g / cm 3 , which can stably float on the water surface, and the surface is incompatible with water, expanding the interactive and educational functions of the toy, such as simulating ships and buoyancy experiments; the composite system of rubber powder and starch combined with the standing process ensures that the clay does not crack or harden during long-term storage or when the temperature changes from -10°C to 40°C. Specific embodiments

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] The present invention provides a technical solution: a clay with a floating effect on water, and the raw materials of the clay include the following components by weight:

[0032] Leavening agent 10 - 20 parts

[0033] Rubber powder 10 - 20 parts

[0034] Vegetable oil 20 - 25 parts

[0035] Starch 70 - 80 parts

[0036] Polymer low molecule 15 - 20 parts

[0037] Pigment 1 - 5 parts;

[0038] The clay does not contain boron elements, has hydrophobicity, can float on the water surface after molding, and supports repeated shaping and unlimited reuse.

[0039] This embodiment is further configured such that the rubber powder is a water-soluble polymer rubber powder, the vegetable oil is a food-grade mineral oil or a synthetic ester oil, and the polymer low molecule is a polyolefin or polyester material with a molecular weight lower than 5000.

[0040] This embodiment is further configured such that the density of the clay is 0.8 - 1.0 g / cm 3 , and its water absorption rate is less than 5% after standing in water for 24 hours, and its surface is incompatible with water.

[0041] This embodiment is further configured to include the following steps:

[0042] (1) Weigh each raw material according to the ratio;

[0043] (2) Heat and stir the rubber powder and the vegetable oil at 50 - 70 °C until they are completely melted to form a glue solution;

[0044] (3) Add the bulking agent, starch, polymer low molecule, and pigment to the glue solution in sequence, and put them into a kneader to stir at a speed of 30 - 50 r / min for 30 - 60 minutes to form a uniform glue material;

[0045] (4) Let the glue material stand in a sealed environment for 6 - 8 hours;

[0046] (5) Use an extruder to form the glue material into a preset shape, cut it, and then assemble and package it.

[0047] This embodiment is further configured such that the heating and stirring temperature in step (2) is 60 °C, and the stirring time of the kneader in step (3) is 45 minutes.

[0048] This embodiment is further configured such that the clay remains soft and plastic after being placed in an environment of 25 °C for 12 months, without cracking or hardening.

[0049] This embodiment is further configured to be applied to children's creative toys, floating models on water, or scientific and educational utensils, and to stimulate the creativity of users through the combination of buoyancy and resistance.

[0050] This embodiment is further configured such that the bulking agent is sodium bicarbonate or food-grade foaming microspheres, and the pigment is non-toxic color paste or natural mineral pigment.

[0051] The detailed connection means are well-known techniques in the art. The following mainly introduces the working principle and process, and the specific work is as follows.

[0052] Examples 1 - 3: Formulation and Preparation

[0053] The following illustrates the implementation manners and effects of the present invention through specific examples. All parts of raw materials are in weight parts.

[0054] Example 1

[0055] Formula:

[0056] Leavening agent (sodium bicarbonate): 10 parts, rubber powder (polyvinyl alcohol): 70 parts, vegetable oil (food-grade mineral oil): 20 parts, starch (corn starch): 10 parts, low molecular weight polymer (polyester, molecular weight 3000): 15 parts, pigment (color paste): 1 part.

[0057] Preparation steps:

[0058] Heat and stir the rubber powder and vegetable oil at 60 °C until completely dissolved to form a rubber solution.

[0059] Add the remaining raw materials and stir in a kneader at 40 r / min for 45 minutes to obtain a uniform rubber compound.

[0060] After the rubber compound is sealed and left standing for 6 hours, it is extruded into blocks and cut and packaged.

[0061] Example 2

[0062] Formula:

[0063] Leavening agent (food-grade foaming microspheres): 15 parts, rubber powder (carboxymethyl cellulose): 75 parts, vegetable oil (synthetic ester oil): 22 parts, starch (cassava starch): 15 parts, low molecular weight polymer (polyolefin, molecular weight 4000): 18 parts, pigment (natural mineral pigment): 3 parts.

[0064] Preparation steps:

[0065] Stir and dissolve the rubber powder and vegetable oil at 65 °C.

[0066] Add the remaining raw materials and stir in a kneader at 50 r / min for 50 minutes.

[0067] After standing for 7 hours, it is formed and packaged.

[0068] Example 3

[0069] Formula:

[0070] Leavening agent (sodium bicarbonate): 20 parts, rubber powder (sodium polyacrylate): 80 parts, vegetable oil (food-grade mineral oil): 25 parts, starch (potato starch): 20 parts, low molecular weight polymer (polyester, molecular weight 4500): 20 parts, pigment (color paste): 5 parts.

[0071] Preparation steps:

[0072] Dissolve the rubber powder and vegetable oil at 70 °C.

[0073] Stir in a kneader at 30 r / min for 60 minutes.

[0074] After standing for 8 hours, it is extruded and cut.

[0075] It should be noted that in this document, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

Claims

1. A kind of clay with a water suspension effect, characterized in that, The raw materials of the clay include the following components by weight: Leavening agent 10 - 20 parts Glue powder 10 - 20 parts Vegetable oil 20 - 25 parts Starch 70 - 80 parts Polymer low molecule 15 - 20 parts Pigment 1 - 5 parts; The clay does not contain boron element, has hydrophobicity, can float on the water surface after molding, and supports repeated shaping and unlimited reuse.

2. The clay with a water suspension effect according to claim 1, characterized in that , The glue powder is a water-soluble polymer glue powder, the vegetable oil is a food-grade mineral oil or synthetic ester oil, and the polymer low molecule is a polyolefin or polyester material with a molecular weight lower than 5000.

3. A clay having a water suspension effect according to claim 1, characterized in that , the density of the clay is 0.8 - 1.0 g / cm 3 , and its water absorption rate is less than 5% after standing in water for 24 hours, and its surface is incompatible with water.

4. The processing formula of a kind of clay with a water suspension effect according to claim 1, characterized in that , including the following steps: (1) Weigh each raw material according to the ratio; (2) Heat and stir the glue powder and vegetable oil at 50 - 70 °C until completely melted to form a glue solution; (3) Add the leavening agent, starch, polymer low molecule and pigment to the glue solution in sequence, put it into a kneader and stir at a speed of 30 - 50 r / min for 30 - 60 minutes to form a uniform glue material; (4) Let the glue material stand in a sealed environment for 6 - 8 hours; (5) Mould the glue material into a preset shape through an extruder, cut it and assemble and package it.

5. According to the processing formula described in claim 4, characterized in that , The heating and stirring temperature in step (2) is 60 °C, and the stirring time of the kneader in step (3) is 45 minutes.

6. The clay with a water suspension effect according to any one of claims 1-3, characterized in that , The clay still remains in a soft and plastic state after being placed in a 25 °C environment for 12 months, without cracking or hardening.

7. The clay with a water suspension effect according to any one of claims 1 to 3, characterized in that , It is applied to children's creative toys, floating models on water or scientific and educational utensils, and stimulates the creativity of users through the combination of buoyancy and resistance.

8. A kind of clay with a water suspension effect according to claim 1, characterized in that , The leavening agent is sodium bicarbonate or food-grade foaming microspheres, and the pigment is a non-toxic color paste or natural mineral pigment.